/* =====================================================================
   ShiftBridge LMS — Global Design System
   Phase 1 Foundation • Phase 2 CRUD Standardization
   ===================================================================== */

/* Force override Bootstrap and legacy styles with higher specificity */
.sb-card {
    background: #fff !important;
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: var(--sb-radius) !important;
    box-shadow: var(--sb-shadow) !important;
    margin-bottom: 20px !important;
}

/* Enterprise Card System Variants */
.sb-card--hover {
    transition: all 0.2s ease !important;
}

.sb-card--hover:hover {
    box-shadow: var(--sb-shadow-md) !important;
    border-color: var(--sb-primary-100) !important;
    transform: translateY(-2px) !important;
}

.sb-card--flat {
    box-shadow: none !important;
    border: 1px solid var(--sb-slate-200) !important;
}

.sb-card--borderless {
    border: none !important;
    box-shadow: var(--sb-shadow-sm) !important;
}

.sb-card--elevated {
    box-shadow: var(--sb-shadow-lg) !important;
    border: none !important;
}

.sb-card__body {
    padding: var(--sb-space-6) !important;
}

.sb-card__header {
    padding: var(--sb-space-6) !important;
    border-bottom: 1px solid var(--sb-slate-200) !important;
}

.sb-card__footer {
    padding: var(--sb-space-6) !important;
    border-top: 1px solid var(--sb-slate-200) !important;
    background: var(--sb-slate-050) !important;
}

/* Course Card Variant */
.sb-card--course {
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
    height: 100% !important;
}

.sb-card--course .sb-card__body {
    flex: 1 !important;
    display: flex !important;
    flex-direction: column !important;
}

/* Stats Card Variant */
.sb-card--stats {
    text-align: center !important;
    padding: var(--sb-space-8) !important;
}

.sb-card--stats .sb-card__value {
    font-size: 32px !important;
    font-weight: 700 !important;
    color: var(--sb-slate-900) !important;
    margin-bottom: var(--sb-space-2) !important;
}

.sb-card--stats .sb-card__label {
    font-size: 14px !important;
    color: var(--sb-slate-500) !important;
    margin-bottom: var(--sb-space-4) !important;
}

.sb-card--stats .sb-card__trend {
    font-size: 13px !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
}

.sb-card--stats .sb-card__trend--up {
    color: var(--sb-success) !important;
}

.sb-card--stats .sb-card__trend--down {
    color: var(--sb-danger) !important;
}

.sb-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 8px 16px !important;
    border: 1px solid transparent !important;
    border-radius: var(--sb-radius-sm) !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    text-decoration: none !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    gap: 8px !important;
}

/* Enterprise Button Variants - CTA Hierarchy */
.sb-btn--primary {
    background: var(--sb-primary) !important;
    color: #fff !important;
}

.sb-btn--primary:hover {
    background: var(--sb-primary-600) !important;
    transform: translateY(-1px) !important;
    box-shadow: var(--sb-shadow-md) !important;
}

.sb-btn--secondary {
    background: #fff !important;
    border-color: var(--sb-slate-300) !important;
    color: var(--sb-slate-700) !important;
}

.sb-btn--secondary:hover {
    background: var(--sb-slate-050) !important;
    border-color: var(--sb-slate-400) !important;
}

.sb-btn--ghost {
    background: transparent !important;
    color: var(--sb-slate-600) !important;
}

.sb-btn--ghost:hover {
    background: var(--sb-slate-050) !important;
    color: var(--sb-slate-800) !important;
}

.sb-btn--danger {
    background: var(--sb-danger) !important;
    color: #fff !important;
}

.sb-btn--danger:hover {
    background: #dc2626 !important;
}

.sb-btn--success {
    background: var(--sb-success) !important;
    color: #fff !important;
}

.sb-btn--success:hover {
    background: #059669 !important;
}

/* Button Sizes */
.sb-btn--sm {
    padding: 6px 12px !important;
    font-size: 13px !important;
}

.sb-btn--lg {
    padding: 12px 24px !important;
    font-size: 15px !important;
}

.sb-btn--icon {
    padding: 8px !important;
}

.sb-btn--block {
    width: 100% !important;
}

/* Button States */
.sb-btn:disabled,
.sb-btn--disabled {
    opacity: 0.5 !important;
    cursor: not-allowed !important;
    pointer-events: none !important;
}

.sb-btn--active {
    background: var(--sb-primary-600) !important;
    color: #fff !important;
}

/* Enterprise Form Layout System */
.sb-form-layout {
    max-width: 800px;
}

.sb-form-layout__header {
    margin-bottom: var(--sb-space-8);
}

.sb-form-layout__title {
    font-size: 24px;
    font-weight: 700;
    color: var(--sb-slate-900);
    margin: 0 0 var(--sb-space-2) 0;
}

.sb-form-layout__description {
    color: var(--sb-slate-500);
    margin: 0;
    line-height: 1.6;
}

.sb-form-layout__section {
    margin-bottom: var(--sb-space-8);
}

.sb-form-layout__section-header {
    margin-bottom: var(--sb-space-6);
    padding-bottom: var(--sb-space-4);
    border-bottom: 1px solid var(--sb-slate-200);
}

.sb-form-layout__section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--sb-slate-800);
    margin: 0 0 var(--sb-space-2) 0;
}

.sb-form-layout__section-description {
    color: var(--sb-slate-500);
    margin: 0;
    font-size: 14px;
}

.sb-form-layout--1-column {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-6);
}

.sb-form-layout--2-column {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sb-space-6);
}

.sb-form-layout__actions {
    display: flex;
    gap: var(--sb-space-3);
    margin-top: var(--sb-space-8);
    padding-top: var(--sb-space-6);
    border-top: 1px solid var(--sb-slate-200);
}

.sb-form-layout__form label {
    display: block;
    font-weight: 500;
    color: var(--sb-slate-700);
    margin-bottom: var(--sb-space-2);
    font-size: 14px;
}

.sb-form-layout__form input[type="text"],
.sb-form-layout__form input[type="email"],
.sb-form-layout__form input[type="password"],
.sb-form-layout__form input[type="number"],
.sb-form-layout__form input[type="url"],
.sb-form-layout__form textarea,
.sb-form-layout__form select {
    width: 100%;
    padding: var(--sb-space-3);
    border: 1px solid var(--sb-slate-300);
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
    transition: all 0.2s ease;
}

.sb-form-layout__form input:focus,
.sb-form-layout__form textarea:focus,
.sb-form-layout__form select:focus {
    outline: none;
    border-color: var(--sb-primary);
    box-shadow: 0 0 0 3px var(--sb-primary-050);
}

/* Enterprise Toolbar Layout */
.sb-toolbar {
    padding: var(--sb-space-4);
    background: var(--sb-slate-050);
    border-radius: var(--sb-radius);
    margin-bottom: var(--sb-space-6);
}

.sb-toolbar__table {
    border-collapse: collapse;
    width: 100%;
}

.sb-toolbar__table td {
    padding: 0;
    vertical-align: middle;
}

.sb-toolbar__table td:not(:last-child) {
    padding-right: var(--sb-space-3);
}

.sb-toolbar__search {
    width: 220px;
    position: relative;
}

.sb-toolbar__search i {
    position: absolute;
    left: 12px;
    color: var(--sb-slate-400);
    font-size: 18px;
    pointer-events: none;
}

.sb-toolbar__search input {
    width: 100%;
    padding: 8px 12px 8px 40px;
    border: 1px solid var(--sb-slate-300);
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
    transition: all 0.2s ease;
}

.sb-toolbar__search input:focus {
    outline: none;
    border-color: var(--sb-primary);
    box-shadow: 0 0 0 3px var(--sb-primary-050);
}

.sb-toolbar select,
.sb-toolbar .sb-select {
    width: 160px;
    padding: 8px 32px 8px 12px;
    border: 1px solid var(--sb-slate-300);
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
    background: #fff;
    cursor: pointer;
}

/* Enterprise Workspace Layout */
.sb-workspace {
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--sb-topbar-h));
    background: var(--sb-slate-050);
}

.sb-workspace__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--sb-space-4) var(--sb-space-6);
    background: #fff;
    border-bottom: 1px solid var(--sb-slate-200);
    flex-shrink: 0;
}

.sb-workspace__header-left {
    flex: 1;
}

.sb-workspace__breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    margin-bottom: var(--sb-space-1);
}

.sb-workspace__breadcrumb {
    font-size: 0.875rem;
    color: var(--sb-slate-500);
    text-decoration: none;
    transition: color 0.2s ease;
}

.sb-workspace__breadcrumb:hover {
    color: var(--sb-primary);
}

.sb-workspace__breadcrumb-separator {
    color: var(--sb-slate-300);
}

.sb-workspace__breadcrumb-current {
    font-size: 0.875rem;
    color: var(--sb-slate-700);
    font-weight: 500;
}

.sb-workspace__title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--sb-slate-900);
    margin: 0;
}

.sb-workspace__header-right {
    display: flex;
    gap: var(--sb-space-2);
}

/* Stepper Navigation */
.sb-stepper {
    display: flex;
    justify-content: center;
    padding: var(--sb-space-4) var(--sb-space-6);
    background: #fff;
    border-bottom: 1px solid var(--sb-slate-200);
    flex-shrink: 0;
}

.sb-stepper__track {
    display: flex;
    align-items: center;
    gap: 0;
}

.sb-stepper__item {
    display: flex;
    align-items: center;
    gap: var(--sb-space-3);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.sb-stepper__item--active .sb-stepper__step {
    background: var(--sb-primary);
    color: #fff;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.sb-stepper__item--completed .sb-stepper__step {
    background: var(--sb-success);
    color: #fff;
}

.sb-stepper__item--active .sb-stepper__label {
    color: var(--sb-primary);
    font-weight: 600;
}

.sb-stepper__item--completed .sb-stepper__label {
    color: var(--sb-success);
}

.sb-stepper__step {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--sb-slate-100);
    color: var(--sb-slate-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.sb-stepper__step i {
    font-size: 1.125rem;
}

.sb-stepper__label {
    font-size: 0.875rem;
    color: var(--sb-slate-500);
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.sb-stepper__connector {
    width: 60px;
    height: 2px;
    background: var(--sb-slate-200);
    flex-shrink: 0;
}

.sb-stepper__connector--completed {
    background: var(--sb-success);
}

/* Panel Grid */
.sb-panel-grid {
    display: grid;
    grid-template-columns: 320px 1fr 320px;
    gap: var(--sb-space-4);
    padding: var(--sb-space-4);
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.sb-panel {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.sb-panel__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--sb-space-3) var(--sb-space-4);
    border-bottom: 1px solid var(--sb-slate-100);
    background: var(--sb-slate-050);
    flex-shrink: 0;
}

.sb-panel__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sb-slate-700);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.sb-panel__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--sb-space-4);
    min-height: 0;
}

.sb-panel__footer {
    padding: var(--sb-space-3) var(--sb-space-4);
    border-top: 1px solid var(--sb-slate-100);
    background: var(--sb-slate-050);
    flex-shrink: 0;
}

/* Structure Tree */
.sb-structure-tree {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-2);
}

.sb-structure-tree__root {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-1);
}

.sb-structure-item {
    border-radius: var(--sb-radius-sm);
    transition: all 0.2s ease;
}

.sb-structure-item--course {
    background: var(--sb-slate-050);
    padding: var(--sb-space-2);
}

.sb-structure-item--module {
    margin-left: var(--sb-space-2);
}

.sb-structure-item--lesson {
    margin-left: var(--sb-space-2);
}

.sb-structure-item__header {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    padding: var(--sb-space-2);
    cursor: pointer;
    border-radius: var(--sb-radius-sm);
    transition: background 0.2s ease;
}

.sb-structure-item__header:hover {
    background: var(--sb-slate-100);
}

.sb-structure-item__icon {
    color: var(--sb-slate-400);
    font-size: 1rem;
}

.sb-structure-item__drag-handle {
    cursor: move;
    color: var(--sb-slate-300);
}

.sb-structure-item__title {
    flex: 1;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sb-slate-700);
}

.sb-structure-item__count,
.sb-structure-item__duration {
    font-size: 0.75rem;
    color: var(--sb-slate-500);
    padding: 2px 6px;
    background: var(--sb-slate-100);
    border-radius: 4px;
}

.sb-structure-item__chevron {
    color: var(--sb-slate-400);
    transition: transform 0.2s ease;
}

.sb-structure-item__children {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-1);
    padding-left: var(--sb-space-2);
}

.sb-structure-item__children--collapsed {
    display: none;
}

.sb-structure-item__add {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    padding: var(--sb-space-2);
    background: none;
    border: 1px dashed var(--sb-slate-300);
    border-radius: var(--sb-radius-sm);
    color: var(--sb-slate-500);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.sb-structure-item__add:hover {
    background: var(--sb-slate-050);
    border-color: var(--sb-primary);
    color: var(--sb-primary);
}

/* Action Toolbar */
.sb-action-toolbar {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-3);
}

.sb-action-toolbar__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--sb-slate-500);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.sb-action-toolbar__items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sb-space-2);
}

.sb-action-tool {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--sb-space-2);
    padding: var(--sb-space-4) var(--sb-space-3);
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    color: var(--sb-slate-600);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 80px;
}

.sb-action-tool:hover {
    background: var(--sb-slate-050);
    border-color: var(--sb-primary);
    color: var(--sb-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.sb-action-tool i {
    font-size: 1.5rem;
}

/* Content Editor */
.sb-content-editor {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-4);
}

/* Editor Toolbar */
.sb-editor-toolbar {
    display: flex;
    align-items: center;
    gap: var(--sb-space-1);
}

.sb-editor-toolbar__divider {
    width: 1px;
    height: 20px;
    background: var(--sb-slate-200);
    margin: 0 var(--sb-space-2);
}

/* Editing Canvas */
.sb-editing-canvas {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 400px;
    background: var(--sb-slate-050);
    border: 2px dashed var(--sb-slate-200);
    border-radius: var(--sb-radius);
}

.sb-editing-canvas__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--sb-space-8);
}

.sb-editing-canvas__placeholder-icon {
    font-size: 4rem;
    color: var(--sb-slate-300);
    margin-bottom: var(--sb-space-4);
}

.sb-editing-canvas__placeholder-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--sb-slate-700);
    margin: 0 0 var(--sb-space-2) 0;
}

.sb-editing-canvas__placeholder-text {
    color: var(--sb-slate-500);
    margin: 0 0 var(--sb-space-4) 0;
    font-size: 0.875rem;
    max-width: 400px;
}

.sb-editing-canvas__placeholder-actions {
    display: flex;
    gap: var(--sb-space-2);
}

.sb-content-section {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    overflow: hidden;
}

.sb-content-section__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--sb-space-3) var(--sb-space-4);
    border-bottom: 1px solid var(--sb-slate-100);
    background: var(--sb-slate-050);
}

.sb-content-section__header-left {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
}

.sb-content-section__header-right {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
}

.sb-content-section__icon {
    color: var(--sb-slate-400);
    font-size: 1rem;
}

.sb-content-section__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sb-slate-700);
    margin: 0;
}

.sb-content-section__body {
    padding: var(--sb-space-4);
}

.sb-content-section__description {
    color: var(--sb-slate-600);
    margin: 0 0 var(--sb-space-3) 0;
    font-size: 0.875rem;
}

/* Info Grid */
.sb-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sb-space-4);
    margin-bottom: var(--sb-space-4);
}

.sb-info-grid__item {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-1);
}

.sb-info-grid__item--full {
    grid-column: 1 / -1;
}

.sb-info-grid__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--sb-slate-500);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.sb-info-grid__value {
    font-size: 0.875rem;
    color: var(--sb-slate-700);
}

/* Lesson List */
.sb-lesson-list {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-2);
    margin-bottom: var(--sb-space-3);
}

.sb-lesson-item {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    padding: var(--sb-space-2);
    background: var(--sb-slate-050);
    border: 1px solid var(--sb-slate-100);
    border-radius: var(--sb-radius-sm);
    transition: all 0.2s ease;
}

.sb-lesson-item:hover {
    border-color: var(--sb-slate-200);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.sb-lesson-item__header {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    flex: 1;
}

.sb-lesson-item__icon {
    color: var(--sb-slate-400);
    font-size: 1rem;
}

.sb-lesson-item__title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sb-slate-700);
    flex: 1;
}

.sb-lesson-item__duration {
    font-size: 0.75rem;
    color: var(--sb-slate-500);
    padding: 2px 6px;
    background: var(--sb-slate-100);
    border-radius: 4px;
}

/* Empty States */
.sb-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--sb-space-8) var(--sb-space-4);
    text-align: center;
}

.sb-empty-state__icon {
    font-size: 3rem;
    color: var(--sb-slate-300);
    margin-bottom: var(--sb-space-3);
}

.sb-empty-state__text {
    color: var(--sb-slate-500);
    margin: 0 0 var(--sb-space-3) 0;
    font-size: 0.875rem;
}

.sb-empty-workspace {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
}

.sb-empty-workspace__icon {
    font-size: 4rem;
    color: var(--sb-slate-300);
    margin-bottom: var(--sb-space-4);
}

.sb-empty-workspace__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--sb-slate-700);
    margin: 0 0 var(--sb-space-2) 0;
}

.sb-empty-workspace__description {
    color: var(--sb-slate-500);
    margin: 0 0 var(--sb-space-4) 0;
    font-size: 0.875rem;
}

/* Property Groups */
.sb-property-group {
    margin-bottom: var(--sb-space-4);
}

.sb-property-group__title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--sb-slate-500);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin: 0 0 var(--sb-space-3) 0;
}

.sb-property-group__content {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-3);
}

.sb-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-2);
}

.sb-form-group__label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sb-slate-700);
}

.sb-form-group__checkbox {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    cursor: pointer;
}

.sb-form-group__checkbox input {
    cursor: pointer;
}

.sb-form-group__checkbox span {
    font-size: 0.875rem;
    color: var(--sb-slate-700);
}

/* Status Badge */
.sb-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sb-space-2);
    padding: var(--sb-space-2) var(--sb-space-3);
    border-radius: var(--sb-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.sb-status-badge--draft {
    background: var(--sb-slate-100);
    color: var(--sb-slate-600);
}

.sb-status-badge--published {
    background: var(--sb-success-050);
    color: var(--sb-success-600);
}

/* Checklist */
.sb-checklist {
    display: flex;
    flex-direction: column;
    gap: var(--sb-space-2);
}

.sb-checklist__item {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    font-size: 0.875rem;
    color: var(--sb-slate-600);
    cursor: default;
}

.sb-checklist__item input {
    cursor: default;
}

/* Responsive Workspace */
@media (max-width: 1400px) {
    .sb-panel-grid {
        grid-template-columns: 280px 1fr 280px;
    }
}

@media (max-width: 1200px) {
    .sb-panel-grid {
        grid-template-columns: 260px 1fr;
    }
    
    .sb-panel--right {
        display: none;
    }
}

@media (max-width: 768px) {
    .sb-panel-grid {
        grid-template-columns: 1fr;
    }
    
    .sb-panel--left {
        display: none;
    }
    
    .sb-workspace__header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--sb-space-3);
    }
    
    .sb-stepper {
        overflow-x: auto;
        padding: var(--sb-space-3) var(--sb-space-4);
    }
}

/* Workspace Layout - Full Screen */
.ws-body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f5f7fa;
    overflow: hidden;
}

/* Course Builder - True Application Grid Layout */
.cb-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #f5f7fa;
}

.cb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
    flex-shrink: 0;
}

.cb-header__left {
    flex: 1;
}

.cb-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.cb-breadcrumbs__link {
    font-size: 14px;
    color: #64748b;
    text-decoration: none;
    transition: color 0.2s ease;
}

.cb-breadcrumbs__link:hover {
    color: #3b82f6;
}

.cb-breadcrumbs__separator {
    color: #cbd5e1;
}

.cb-breadcrumbs__current {
    font-size: 14px;
    color: #334155;
    font-weight: 500;
}

.cb-header__title {
    font-size: 24px;
    font-weight: 600;
    color: #0f172a;
    margin: 0;
}

.cb-header__right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cb-header__status {
    margin-right: 8px;
}

.cb-stepper {
    display: flex;
    justify-content: center;
    padding: 16px 24px;
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
    flex-shrink: 0;
}

.cb-stepper__track {
    display: flex;
    align-items: center;
    gap: 0;
}

.cb-stepper__item {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.cb-stepper__item--completed .cb-stepper__step {
    background: #10b981;
    color: #fff;
}

.cb-stepper__item--active .cb-stepper__step {
    background: #3b82f6;
    color: #fff;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.cb-stepper__step {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #f1f5f9;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.cb-stepper__step i {
    font-size: 18px;
}

.cb-stepper__label {
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.cb-stepper__item--completed .cb-stepper__label {
    color: #10b981;
}

.cb-stepper__item--active .cb-stepper__label {
    color: #3b82f6;
    font-weight: 600;
}

.cb-stepper__connector {
    width: 60px;
    height: 2px;
    background: #e2e8f0;
    flex-shrink: 0;
}

.cb-stepper__connector--completed {
    background: #10b981;
}

/* Three-Column Grid */
.cb-grid {
    display: grid;
    grid-template-columns: 320px 1fr 340px;
    gap: 16px;
    padding: 16px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.cb-panel {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.cb-panel__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    background: #f8fafc;
    flex-shrink: 0;
}

.cb-panel__title {
    font-size: 13px;
    font-weight: 600;
    color: #475569;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.cb-panel__body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    min-height: 0;
}

.cb-panel__footer {
    padding: 12px 16px;
    border-top: 1px solid #f1f5f9;
    background: #f8fafc;
    flex-shrink: 0;
}

/* Tree */
.cb-tree {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cb-tree__root {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cb-tree-item {
    border-radius: 6px;
    transition: all 0.2s ease;
}

.cb-tree-item--course {
    background: #f8fafc;
    padding: 8px;
}

.cb-tree-item--module {
    margin-left: 8px;
}

.cb-tree-item--lesson {
    margin-left: 8px;
}

.cb-tree-item__header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.cb-tree-item__header:hover {
    background: #f1f5f9;
}

.cb-tree-item__icon {
    color: #94a3b8;
    font-size: 16px;
}

.cb-tree-item__drag-handle {
    cursor: move;
    color: #cbd5e1;
}

.cb-tree-item__title {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: #334155;
}

.cb-tree-item__count,
.cb-tree-item__duration {
    font-size: 12px;
    color: #64748b;
    padding: 2px 6px;
    background: #f1f5f9;
    border-radius: 4px;
}

.cb-tree-item__chevron {
    color: #94a3b8;
    transition: transform 0.2s ease;
}

.cb-tree-item__children {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-left: 8px;
}

.cb-tree-item__add {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    background: none;
    border: 1px dashed #cbd5e1;
    border-radius: 6px;
    color: #64748b;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.cb-tree-item__add:hover {
    background: #f8fafc;
    border-color: #3b82f6;
    color: #3b82f6;
}

/* Empty */
.cb-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
    text-align: center;
}

.cb-empty__icon {
    font-size: 48px;
    color: #cbd5e1;
    margin-bottom: 12px;
}

.cb-empty__text {
    color: #64748b;
    margin: 0 0 12px 0;
    font-size: 14px;
}

/* Action Grid */
.cb-action-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.cb-action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 12px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: #475569;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 80px;
}

.cb-action-card:hover {
    background: #f8fafc;
    border-color: #3b82f6;
    color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.cb-action-card i {
    font-size: 24px;
}

/* Toolbar */
.cb-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
}

.cb-toolbar__divider {
    width: 1px;
    height: 20px;
    background: #e2e8f0;
    margin: 0 8px;
}

/* Editor */
.cb-editor {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cb-block {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
}

.cb-block__header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    background: #f8fafc;
}

.cb-block__icon {
    color: #94a3b8;
    font-size: 16px;
}

.cb-block__title {
    font-size: 14px;
    font-weight: 600;
    color: #334155;
    margin: 0;
    flex: 1;
}

.cb-badge {
    font-size: 12px;
    color: #64748b;
    padding: 2px 8px;
    background: #f1f5f9;
    border-radius: 12px;
}

.cb-block__body {
    padding: 16px;
}

.cb-lesson {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    margin-bottom: 8px;
}

.cb-lesson__header {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.cb-lesson__icon {
    color: #94a3b8;
    font-size: 16px;
}

.cb-lesson__title {
    font-size: 14px;
    font-weight: 500;
    color: #334155;
    flex: 1;
}

.cb-lesson__duration {
    font-size: 12px;
    color: #64748b;
    padding: 2px 6px;
    background: #f1f5f9;
    border-radius: 4px;
}

/* Canvas */
.cb-canvas {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 400px;
    background: #f8fafc;
    border: 2px dashed #e2e8f0;
    border-radius: 8px;
}

.cb-canvas__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 32px;
}

.cb-canvas__icon {
    font-size: 64px;
    color: #cbd5e1;
    margin-bottom: 16px;
}

.cb-canvas__title {
    font-size: 20px;
    font-weight: 600;
    color: #334155;
    margin: 0 0 8px 0;
}

.cb-canvas__text {
    color: #64748b;
    margin: 0 0 16px 0;
    font-size: 14px;
}

/* Sections */
.cb-section {
    margin-bottom: 24px;
}

.cb-section__title {
    font-size: 12px;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin: 0 0 12px 0;
}

.cb-section__content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Fields */
.cb-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cb-field__label {
    font-size: 14px;
    font-weight: 500;
    color: #334155;
}

.cb-field__checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.cb-field__checkbox input {
    cursor: pointer;
}

.cb-field__checkbox span {
    font-size: 14px;
    color: #334155;
}

.cb-input,
.cb-select {
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 14px;
    background: #fff;
    transition: border-color 0.2s ease;
}

.cb-input:focus,
.cb-select:focus {
    outline: none;
    border-color: #3b82f6;
}

/* Status Badge */
.cb-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

.cb-status-badge--draft {
    background: #f1f5f9;
    color: #64748b;
}

.cb-status-badge--published {
    background: #d1fae5;
    color: #059669;
}

/* Checklist */
.cb-checklist {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cb-checklist__item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #475569;
    cursor: default;
}

.cb-checklist__item input {
    cursor: default;
}

/* Buttons */
.cb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.cb-btn--ghost {
    background: transparent;
    color: #475569;
}

.cb-btn--ghost:hover {
    background: #f1f5f9;
}

.cb-btn--primary {
    background: #3b82f6;
    color: #fff;
    border-color: #3b82f6;
}

.cb-btn--primary:hover {
    background: #2563eb;
    border-color: #2563eb;
}

.cb-btn--secondary {
    background: #fff;
    color: #334155;
    border-color: #e2e8f0;
}

.cb-btn--secondary:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.cb-btn--outline {
    background: transparent;
    color: #475569;
    border-color: #e2e8f0;
}

.cb-btn--outline:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.cb-btn--icon {
    padding: 8px;
}

.cb-btn--sm {
    padding: 4px 12px;
    font-size: 12px;
}

.cb-btn--block {
    width: 100%;
}

/* Responsive Builder */
@media (max-width: 1400px) {
    .cb-grid {
        grid-template-columns: 280px 1fr 320px;
    }
}

@media (max-width: 1200px) {
    .cb-grid {
        grid-template-columns: 260px 1fr;
    }
    
    .cb-panel--right {
        display: none;
    }
}

@media (max-width: 768px) {
    .cb-grid {
        grid-template-columns: 1fr;
    }
    
    .cb-panel--left {
        display: none;
    }
    
    .cb-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .cb-stepper {
        overflow-x: auto;
        padding: 12px 16px;
    }
}

.sb-toolbar__view-toggle {
    display: flex;
    gap: var(--sb-space-1);
    flex-shrink: 0;
}

.sb-toolbar__view-toggle .sb-btn--icon {
    padding: 8px;
    background: #fff;
    border: 1px solid var(--sb-slate-300);
}

.sb-toolbar__view-toggle .sb-btn--active {
    background: var(--sb-primary);
    color: #fff;
    border-color: var(--sb-primary);
}

.sb-toolbar__bulk-actions {
    display: flex;
    gap: var(--sb-space-2);
    flex-shrink: 0;
}

/* Responsive toolbar for mobile/tablet */
@media (min-width: 769px) {
    .sb-toolbar {
        flex-wrap: nowrap !important;
    }
}

@media (max-width: 768px) {
    .sb-toolbar {
        flex-wrap: wrap;
    }
    
    .sb-toolbar__search {
        flex: 1 1 100%;
        min-width: 100%;
        max-width: 100%;
    }
    
    .sb-toolbar__filters {
        flex-wrap: wrap;
        flex: 1 1 auto;
        width: 100%;
    }
    
    .sb-toolbar__filters .sb-select {
        flex: 1 1 auto;
        min-width: 120px;
        width: auto;
    }
}

.sb-table {
    width: 100% !important;
    border-collapse: collapse !important;
    background: #fff !important;
    border-radius: var(--sb-radius) !important;
    overflow: hidden !important;
}

.sb-page-header {
    margin-bottom: 32px !important;
}

.sb-page-header__title {
    margin-bottom: 16px !important;
}

.sb-page-header__title h1 {
    margin: 0 !important;
    font-size: 28px !important;
    font-weight: 700 !important;
    color: var(--sb-slate-800) !important;
}

/* Accordion Styles */
.sb-accordion {
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: var(--sb-radius) !important;
    overflow: hidden !important;
}

.sb-accordion__item {
    border-bottom: 1px solid var(--sb-slate-200) !important;
}

.sb-accordion__item:last-child {
    border-bottom: none !important;
}

.sb-accordion__header {
    width: 100% !important;
    background: #fff !important;
    border: none !important;
    padding: 16px 20px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    text-align: left !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    color: var(--sb-slate-800) !important;
}

.sb-accordion__header:hover {
    background: var(--sb-slate-50) !important;
}

.sb-accordion__title {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    flex: 1 !important;
}

.sb-accordion__title i {
    color: var(--sb-primary) !important;
    font-size: 18px !important;
}

.sb-accordion__meta {
    color: var(--sb-slate-500) !important;
    font-size: 12px !important;
    margin-right: 12px !important;
}

.sb-accordion__arrow {
    color: var(--sb-slate-400) !important;
    font-size: 16px !important;
    transition: transform 0.2s ease !important;
}

.sb-accordion__content {
    background: var(--sb-slate-50) !important;
    border-top: 1px solid var(--sb-slate-200) !important;
    max-height: 0 !important;
    overflow: hidden !important;
    transition: max-height 0.3s ease !important;
}

.sb-accordion__content.open {
    max-height: 1000px !important;
}

/* Lesson Items */
.sb-lesson-item {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 12px 20px !important;
    color: var(--sb-slate-600) !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    border-radius: var(--sb-radius-sm) !important;
}

.sb-lesson-item:hover {
    background: var(--sb-primary-bg) !important;
    color: var(--sb-primary) !important;
    padding-left: 24px !important;
}

.sb-lesson-item i {
    color: var(--sb-slate-400) !important;
    font-size: 16px !important;
}

.sb-lesson-item:hover i {
    color: var(--sb-primary) !important;
}

/* File List Styles */
.sb-file-list {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
}

.sb-file-list__item {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 12px 16px !important;
    background: var(--sb-slate-50) !important;
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: var(--sb-radius-sm) !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

.sb-file-list__item:hover {
    background: var(--sb-primary-bg) !important;
    border-color: var(--sb-primary) !important;
}

.sb-file-list__icon {
    color: var(--sb-slate-400) !important;
    font-size: 20px !important;
}

.sb-file-list__item:hover .sb-file-list__icon {
    color: var(--sb-primary) !important;
}

.sb-file-list__content {
    flex: 1 !important;
}

.sb-file-list__title {
    font-weight: 500 !important;
    color: var(--sb-slate-800) !important;
    margin-bottom: 2px !important;
}

.sb-file-list__meta {
    font-size: 12px !important;
    color: var(--sb-slate-500) !important;
}

.sb-page-header__subtitle {
    margin: 0 !important;
    color: var(--sb-slate-500) !important;
    font-size: 16px !important;
}

.sb-grid {
    display: grid !important;
    gap: var(--sb-space-5) !important;
}

.sb-grid--2 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)) !important;
}

.sb-grid--3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)) !important;
}

.sb-grid--4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)) !important;
}

.sb-card__header {
    background: #fff !important;
    border-bottom: 1px solid var(--sb-slate-200) !important;
    padding: 16px 20px !important;
}

.sb-card__title {
    margin: 0 !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    color: var(--sb-slate-800) !important;
}

.sb-card__body {
    padding: 20px !important;
}

.sb-dl {
    display: grid !important;
    grid-template-columns: auto 1fr !important;
    gap: 8px 16px !important;
}

.sb-dl dt {
    color: var(--sb-slate-500) !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    margin: 0 !important;
}

.sb-dl dd {
    color: var(--sb-slate-800) !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    margin: 0 !important;
}

.sb-badge {
    display: inline-block !important;
    padding: 4px 8px !important;
    font-size: 11px !important;
    font-weight: 500 !important;
    border-radius: 4px !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
}

.sb-badge--success {
    background: var(--sb-success-050) !important;
    color: var(--sb-success-700) !important;
    border: 1px solid var(--sb-success-200) !important;
}

/* -------- Button System -------- */
.sb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--sb-font);
}

.sb-btn--primary {
    background: var(--sb-primary);
    color: #fff;
    border-color: var(--sb-primary);
}

.sb-btn--primary:hover {
    background: var(--sb-primary-600);
    border-color: var(--sb-primary-600);
}

.sb-btn--secondary {
    background: var(--sb-slate-100);
    color: var(--sb-slate-800);
    border-color: var(--sb-slate-200);
}

.sb-btn--secondary:hover {
    background: var(--sb-slate-200);
    border-color: var(--sb-slate-300);
}

.sb-btn--outline {
    background: transparent;
    color: var(--sb-slate-700);
    border-color: var(--sb-slate-300);
}

.sb-btn--outline:hover {
    background: var(--sb-slate-50);
    border-color: var(--sb-slate-400);
}

.sb-btn--ghost {
    background: transparent;
    color: var(--sb-slate-700);
    border-color: transparent;
}

.sb-btn--ghost:hover {
    background: var(--sb-slate-100);
}

.sb-btn--success {
    background: var(--sb-success);
    color: #fff;
    border-color: var(--sb-success);
}

.sb-btn--success:hover {
    background: #059669;
    border-color: #059669;
}

.sb-btn--danger {
    background: var(--sb-danger);
    color: #fff;
    border-color: var(--sb-danger);
}

.sb-btn--danger:hover {
    background: #dc2626;
    border-color: #dc2626;
}

.sb-btn--sm {
    padding: 6px 12px;
    font-size: 13px;
}

.sb-btn--lg {
    padding: 12px 24px;
    font-size: 15px;
}

.sb-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* -------- Form System -------- */
.sb-form-group {
    margin-bottom: 16px;
}

.sb-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--sb-slate-700);
    margin-bottom: 6px;
}

.sb-label__req {
    color: var(--sb-danger);
}

.sb-input,
.sb-select,
.sb-textarea {
    padding: 10px 12px;
    border: 1px solid var(--sb-slate-300);
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
    font-family: var(--sb-font);
    color: var(--sb-slate-800);
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sb-input:focus,
.sb-select:focus,
.sb-textarea:focus {
    outline: none;
    border-color: var(--sb-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.sb-input::placeholder,
.sb-textarea::placeholder {
    color: var(--sb-slate-400);
}

.sb-textarea {
    min-height: 100px;
    resize: vertical;
}

.sb-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%2364748b' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
    appearance: none;
}

.sb-checkbox,
.sb-radio {
    width: 18px;
    height: 18px;
    accent-color: var(--sb-primary);
    cursor: pointer;
}

/* -------- Table System -------- */
.sb-table-container {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    overflow: hidden;
}

.sb-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

.sb-table thead th {
    background: var(--sb-slate-050);
    border-bottom: 1px solid var(--sb-slate-200);
    color: var(--sb-slate-700);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 12px 16px;
    text-align: left;
}

.sb-table tbody tr {
    border-bottom: 1px solid var(--sb-slate-100);
    transition: background-color 0.15s ease;
}

.sb-table tbody tr:last-child {
    border-bottom: none;
}

.sb-table tbody tr:hover {
    background-color: var(--sb-slate-050);
}

.sb-table tbody td {
    padding: 12px 16px;
    color: var(--sb-slate-800);
    font-size: 14px;
    vertical-align: middle;
}

/* -------- Modal System -------- */
.sb-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.sb-modal {
    background: #fff;
    border-radius: var(--sb-radius);
    box-shadow: var(--sb-shadow-lg);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    animation: slideIn 0.2s ease;
}

.sb-modal--sm {
    width: 400px;
}

.sb-modal--md {
    width: 600px;
}

.sb-modal--lg {
    width: 800px;
}

.sb-modal--xl {
    width: 1000px;
}

.sb-modal__header {
    padding: 20px;
    border-bottom: 1px solid var(--sb-slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sb-modal__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--sb-slate-800);
    margin: 0;
}

.sb-modal__close {
    background: transparent;
    border: none;
    color: var(--sb-slate-400);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.sb-modal__close:hover {
    background: var(--sb-slate-100);
    color: var(--sb-slate-600);
}

.sb-modal__body {
    padding: 20px;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.sb-modal__footer {
    padding: 16px 20px;
    border-top: 1px solid var(--sb-slate-200);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

/* -------- Toast Notification System -------- */
.sb-toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sb-toast {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius-sm);
    padding: 16px;
    box-shadow: var(--sb-shadow-lg);
    min-width: 300px;
    max-width: 400px;
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.sb-toast--success {
    border-left: 4px solid var(--sb-success);
}

.sb-toast--error {
    border-left: 4px solid var(--sb-danger);
}

.sb-toast--warning {
    border-left: 4px solid var(--sb-warning);
}

.sb-toast--info {
    border-left: 4px solid var(--sb-primary);
}

.sb-toast__icon {
    font-size: 20px;
    flex-shrink: 0;
}

.sb-toast--success .sb-toast__icon {
    color: var(--sb-success);
}

.sb-toast--error .sb-toast__icon {
    color: var(--sb-danger);
}

.sb-toast--warning .sb-toast__icon {
    color: var(--sb-warning);
}

.sb-toast--info .sb-toast__icon {
    color: var(--sb-primary);
}

.sb-toast__content {
    flex: 1;
}

.sb-toast__title {
    font-weight: 600;
    color: var(--sb-slate-800);
    margin-bottom: 4px;
    font-size: 14px;
}

.sb-toast__message {
    color: var(--sb-slate-600);
    font-size: 13px;
    line-height: 1.5;
}

.sb-toast__close {
    background: transparent;
    border: none;
    color: var(--sb-slate-400);
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
}

.sb-toast__close:hover {
    color: var(--sb-slate-600);
}

/* -------- Breadcrumb System -------- */
.sb-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    margin-bottom: 24px;
    font-size: 13px;
}

.sb-breadcrumb__item {
    color: var(--sb-slate-500);
    text-decoration: none;
    transition: color 0.2s ease;
}

.sb-breadcrumb__item:hover {
    color: var(--sb-primary);
}

.sb-breadcrumb__item--active {
    color: var(--sb-slate-800);
    font-weight: 500;
}

.sb-breadcrumb__separator {
    color: var(--sb-slate-300);
}

/* -------- Pagination System -------- */
.sb-pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: flex-end;
    padding: 16px 0;
}

.sb-pagination__item {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius-sm);
    color: var(--sb-slate-700);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    background: #fff;
}

.sb-pagination__item:hover {
    background: var(--sb-slate-50);
    border-color: var(--sb-slate-300);
}

.sb-pagination__item--active {
    background: var(--sb-primary);
    border-color: var(--sb-primary);
    color: #fff;
}

.sb-pagination__item--disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* -------- Skeleton System -------- */
.sb-skeleton {
    background: linear-gradient(90deg, var(--sb-slate-200) 25%, var(--sb-slate-100) 50%, var(--sb-slate-200) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.sb-skeleton--text {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sb-skeleton__line {
    height: 16px;
    border-radius: 4px;
}

.sb-skeleton--avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.sb-skeleton--card {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    padding: 20px;
}

.sb-skeleton__header {
    height: 24px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.sb-skeleton__body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sb-skeleton--table {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    padding: 16px;
}

.sb-skeleton__row {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
}

.sb-skeleton__row--header {
    margin-bottom: 16px;
}

.sb-skeleton__cell {
    height: 16px;
    border-radius: 4px;
    flex: 1;
}

.sb-skeleton__row--header .sb-skeleton__cell {
    height: 20px;
}

/* -------- Dropdown System -------- */
.sb-dropdown {
    position: relative;
    display: inline-block;
}

.sb-dropdown__menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius-sm);
    box-shadow: var(--sb-shadow-lg);
    z-index: 1000;
    display: none;
    margin-top: 4px;
    animation: fadeIn 0.15s ease;
}

.sb-dropdown__menu.is-open {
    display: block;
}

.sb-dropdown__item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: none;
    text-align: left;
    color: var(--sb-slate-700);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: var(--sb-font);
    text-decoration: none;
}

.sb-dropdown__item:hover {
    background: var(--sb-slate-50);
    color: var(--sb-slate-900);
}

.sb-dropdown__item i {
    font-size: 16px;
    color: var(--sb-slate-400);
}

.sb-dropdown__item:hover i {
    color: var(--sb-slate-600);
}

/* -------- Badge System -------- */
.sb-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sb-badge--sm {
    padding: 2px 8px;
    font-size: 10px;
}

.sb-badge--md {
    padding: 4px 10px;
    font-size: 11px;
}

.sb-badge--lg {
    padding: 6px 14px;
    font-size: 12px;
}

.sb-badge--primary {
    background: var(--sb-primary-050);
    color: var(--sb-primary-700);
    border: 1px solid var(--sb-primary-200);
}

.sb-badge--success {
    background: var(--sb-success-050);
    color: var(--sb-success-700);
    border: 1px solid var(--sb-success-200);
}

.sb-badge--warning {
    background: var(--sb-warning-050);
    color: #b45309;
    border: 1px solid #fcd34d;
}

.sb-badge--danger {
    background: var(--sb-danger-050);
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.sb-badge--info {
    background: var(--sb-info-050);
    color: #6d28d9;
    border: 1px solid #c4b5fd;
}

/* -------- Tabs System -------- */
.sb-tabs {
    width: 100%;
}

.sb-tabs__nav {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--sb-slate-200);
    margin-bottom: 16px;
}

.sb-tabs__tab {
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--sb-slate-600);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--sb-font);
}

.sb-tabs__tab:hover {
    color: var(--sb-slate-800);
    background: var(--sb-slate-50);
}

.sb-tabs__tab.is-active {
    color: var(--sb-primary);
    border-bottom-color: var(--sb-primary);
    font-weight: 600;
}

.sb-tabs__content {
    min-height: 100px;
}

.sb-tabs__panel {
    display: none;
}

.sb-tabs__panel.is-active {
    display: block;
    animation: fadeIn 0.2s ease;
}

/* -------- Progress System -------- */
.sb-progress {
    width: 100%;
}

.sb-progress--sm {
    font-size: 12px;
}

.sb-progress--md {
    font-size: 14px;
}

.sb-progress--lg {
    font-size: 16px;
}

.sb-progress__label {
    font-weight: 600;
    color: var(--sb-slate-700);
    margin-bottom: 6px;
    text-align: right;
}

.sb-progress__bar {
    background: var(--sb-slate-200);
    border-radius: 999px;
    overflow: hidden;
    height: 8px;
}

.sb-progress--sm .sb-progress__bar {
    height: 6px;
}

.sb-progress--lg .sb-progress__bar {
    height: 12px;
}

.sb-progress__fill {
    height: 100%;
    border-radius: 999px;
    transition: width 0.3s ease;
}

.sb-progress__fill--primary {
    background: var(--sb-primary);
}

.sb-progress__fill--success {
    background: var(--sb-success);
}

.sb-progress__fill--warning {
    background: var(--sb-warning);
}

.sb-progress__fill--danger {
    background: var(--sb-danger);
}

/* -------- Avatar System -------- */
.sb-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--sb-primary);
    color: #fff;
    font-weight: 600;
}

.sb-avatar--sm {
    width: 32px;
    height: 32px;
    font-size: 12px;
}

.sb-avatar--md {
    width: 40px;
    height: 40px;
    font-size: 14px;
}

.sb-avatar--lg {
    width: 48px;
    height: 48px;
    font-size: 16px;
}

.sb-avatar--circle {
    border-radius: 50%;
}

.sb-avatar--square {
    border-radius: var(--sb-radius-sm);
}

.sb-avatar__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sb-avatar__initials {
    text-transform: uppercase;
}

/* -------- Mobile Navigation -------- */
@media (max-width: 768px) {
    .sb-sidebar {
        transform: translateX(-100%);
    }
    
    .sb-sidebar.is-open {
        transform: translateX(0);
        box-shadow: var(--sb-shadow-lg);
    }
    
    .sb-backdrop {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }
    
    .sb-backdrop.is-visible {
        opacity: 1;
        pointer-events: auto;
    }
    
    /* Mobile sidebar adjustments */
    .sb-sidebar__section-toggle {
        padding: 14px 20px;
        font-size: 15px;
    }
    
    .sb-sidebar__section-item {
        padding: 12px 20px 12px 48px;
        font-size: 14px;
    }
    
    /* Mobile content adjustments */
    .sb-container {
        padding: 16px !important;
    }
    
    .sb-page-header__title {
        font-size: 1.5rem !important;
    }
    
    /* Touch-optimized buttons */
    .sb-btn {
        min-height: 44px;
        padding: 12px 20px;
    }
    
    /* Touch-optimized form inputs */
    .sb-input,
    .sb-select,
    .sb-textarea {
        min-height: 44px;
        padding: 12px 16px;
        font-size: 16px; /* Prevent iOS zoom on focus */
    }
    
    /* Mobile table adjustments */
    .sb-table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .sb-table {
        min-width: 600px;
    }
    
    /* Mobile card adjustments */
    .sb-card {
        margin-bottom: 16px;
    }
    
    .sb-grid--4,
    .sb-grid--3 {
        grid-template-columns: 1fr !important;
    }
    
    .sb-grid--2 {
        grid-template-columns: 1fr !important;
    }
    
    /* Mobile stat cards */
    .sb-stat {
        margin-bottom: 12px;
    }
    
    /* Mobile modal adjustments */
    .sb-modal {
        width: 100% !important;
        max-width: 100% !important;
        height: 100vh !important;
        max-height: 100vh !important;
        border-radius: 0;
    }
    
    .sb-modal__body {
        max-height: calc(100vh - 180px);
    }
}

/* Touch target optimization */
@media (hover: none) and (pointer: coarse) {
    .sb-btn,
    .sb-sidebar__section-toggle,
    .sb-sidebar__section-item,
    .sb-pagination__item {
        min-height: 44px;
        min-width: 44px;
    }
    
    .sb-modal__close,
    .sb-toast__close {
        min-height: 44px;
        min-width: 44px;
        padding: 12px;
    }
}

/* -------- Animations -------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}
:root {
    /* Brand - Blue from mockups */
    --sb-primary: #3b82f6;
    --sb-primary-600: #2563eb;
    --sb-primary-700: #1d4ed8;
    --sb-primary-050: #eff6ff;
    --sb-primary-100: #dbeafe;

    /* Neutrals */
    --sb-navy: #0f172a;
    --sb-slate-900: #0f172a;
    --sb-slate-800: #1e293b;
    --sb-slate-700: #334155;
    --sb-slate-600: #475569;
    --sb-slate-500: #64748b;
    --sb-slate-400: #94a3b8;
    --sb-slate-300: #cbd5e1;
    --sb-slate-200: #e2e8f0;
    --sb-slate-100: #f1f5f9;
    --sb-slate-050: #f8fafc;
    --sb-white: #ffffff;

    /* Semantic colors from mockups */
    --sb-success: #10b981;
    --sb-success-050: #ecfdf5;
    --sb-warning: #f59e0b;
    --sb-warning-050: #fffbeb;
    --sb-danger: #ef4444;
    --sb-danger-050: #fef2f2;
    --sb-info: #8b5cf6;
    --sb-info-050: #f5f3ff;

    /* Layout - Enterprise Spacing System */
    --sb-sidebar-w: 260px;
    --sb-sidebar-w-collapsed: 76px;
    --sb-topbar-h: 72px;
    
    /* Enterprise spacing tokens (8px base grid) */
    --sb-space-1: 4px;
    --sb-space-2: 8px;
    --sb-space-3: 12px;
    --sb-space-4: 16px;
    --sb-space-5: 20px;
    --sb-space-6: 24px;
    --sb-space-8: 32px;
    --sb-space-10: 40px;
    --sb-space-12: 48px;
    --sb-space-16: 64px;
    
    /* Content grid system - increased for enterprise feel */
    --sb-content-max-width: 1400px;
    --sb-content-gutter: 32px;
    --sb-content-padding-x: 40px;
    --sb-content-padding-y: 48px;
    
    /* Radius */
    --sb-radius: 12px;
    --sb-radius-sm: 8px;
    --sb-radius-lg: 16px;
    --sb-radius-pill: 999px;

    /* Shadows - subtle as in mockups */
    --sb-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --sb-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --sb-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --sb-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);

    /* Typography */
    --sb-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Transitions */
    --sb-transition: all 0.15s ease-in-out;
}

/* -------- Base -------- */
* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--sb-font);
    background: var(--sb-slate-050);
    color: var(--sb-slate-800);
    font-size: 14px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

/* =====================================================================
   Legacy Bootstrap → ShiftBridge Overrides
   Auto-styles pages using old Bootstrap classes to match the design
   ===================================================================== */

/* Cards */
.sb-content .card,
main .card {
    background: #fff !important;
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: var(--sb-radius) !important;
    box-shadow: var(--sb-shadow) !important;
    margin-bottom: 20px !important;
}
.sb-content .card-header,
main .card-header {
    background: #fff !important;
    border-bottom: 1px solid var(--sb-slate-200) !important;
    padding: 16px 20px !important;
    font-weight: 600 !important;
    color: var(--sb-slate-900) !important;
}
.sb-content .card-body,
main .card-body { padding: 20px !important; }
.sb-content .card-footer,
main .card-footer {
    background: var(--sb-slate-050) !important;
    border-top: 1px solid var(--sb-slate-200) !important;
    padding: 14px 20px !important;
}

/* Buttons */
.sb-content .btn,
main .btn {
    border-radius: 8px !important;
    font-weight: 500 !important;
    padding: 9px 16px !important;
    font-size: 14px !important;
    transition: var(--sb-transition);
    border: 1px solid transparent !important;
}
.sb-content .btn-sm,
main .btn-sm { padding: 5px 12px !important; font-size: 13px !important; }
.sb-content .btn-lg,
main .btn-lg { padding: 12px 22px !important; font-size: 15px !important; }
.sb-content .btn-primary,
main .btn-primary {
    background-color: var(--sb-primary) !important;
    border-color: var(--sb-primary) !important;
    color: #fff !important;
}
.sb-content .btn-primary:hover,
main .btn-primary:hover {
    background-color: var(--sb-primary-600) !important;
    border-color: var(--sb-primary-600) !important;
}
.sb-content .btn-secondary,
.sb-content .btn-outline-secondary,
main .btn-secondary,
main .btn-outline-secondary {
    background: #fff !important;
    color: var(--sb-slate-700) !important;
    border-color: var(--sb-slate-200) !important;
}
.sb-content .btn-secondary:hover,
.sb-content .btn-outline-secondary:hover,
main .btn-secondary:hover,
main .btn-outline-secondary:hover {
    background: var(--sb-slate-050) !important;
    border-color: var(--sb-slate-300) !important;
}
.sb-content .btn-success,
main .btn-success {
    background-color: var(--sb-success) !important;
    border-color: var(--sb-success) !important;
    color: #fff !important;
}
.sb-content .btn-danger,
.sb-content .btn-outline-danger,
main .btn-danger {
    background-color: var(--sb-danger) !important;
    border-color: var(--sb-danger) !important;
    color: #fff !important;
}
.sb-content .btn-outline-danger {
    background: transparent !important;
    color: var(--sb-danger) !important;
}
.sb-content .btn-outline-primary,
main .btn-outline-primary {
    background: transparent !important;
    color: var(--sb-primary) !important;
    border-color: var(--sb-primary) !important;
}
.sb-content .btn-warning,
main .btn-warning {
    background-color: var(--sb-warning) !important;
    border-color: var(--sb-warning) !important;
    color: #fff !important;
}

/* Forms */
.sb-content .form-control,
.sb-content .form-select,
main .form-control,
main .form-select {
    border-radius: 8px !important;
    border: 1px solid var(--sb-slate-200) !important;
    padding: 9px 14px !important;
    font-size: 14px !important;
    color: var(--sb-slate-800) !important;
    background-color: #fff !important;
    transition: var(--sb-transition);
}
.sb-content .form-control:focus,
.sb-content .form-select:focus,
main .form-control:focus,
main .form-select:focus {
    border-color: var(--sb-primary) !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1) !important;
    outline: none !important;
}
.sb-content .form-label,
main .form-label {
    font-weight: 500 !important;
    margin-bottom: 6px !important;
    color: var(--sb-slate-700) !important;
    font-size: 13px !important;
}
.sb-content .form-text,
main .form-text {
    color: var(--sb-slate-500) !important;
    font-size: 12px !important;
}

/* Tables */
.sb-content .table,
main .table {
    margin-bottom: 0 !important;
    color: var(--sb-slate-800) !important;
}
.sb-content .table thead th,
main .table thead th {
    background: var(--sb-slate-050) !important;
    border-bottom: 1px solid var(--sb-slate-200) !important;
    border-top: none !important;
    color: var(--sb-slate-700) !important;
    font-weight: 600 !important;
    font-size: 12px !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    padding: 12px 16px !important;
}
.sb-content .table tbody tr,
main .table tbody tr {
    transition: background-color 0.15s ease;
}
.sb-content .table tbody tr:hover,
main .table tbody tr:hover {
    background-color: var(--sb-slate-050) !important;
}
.sb-content .table tbody td,
main .table tbody td {
    padding: 12px 16px !important;
    border-top: 1px solid var(--sb-slate-100) !important;
    vertical-align: middle !important;
}

/* Badges/Pills */
.sb-content .badge,
main .badge {
    font-weight: 500 !important;
    padding: 4px 10px !important;
    border-radius: 999px !important;
    font-size: 12px !important;
}

/* Alerts */
.sb-content .alert,
main .alert {
    border-radius: 10px !important;
    border: 1px solid !important;
    padding: 14px 18px !important;
    font-size: 14px !important;
}
.sb-content .alert-success,
main .alert-success {
    background: var(--sb-success-050) !important;
    border-color: var(--sb-success) !important;
    color: #047857 !important;
}
.sb-content .alert-danger,
main .alert-danger {
    background: var(--sb-danger-050) !important;
    border-color: var(--sb-danger) !important;
    color: #b91c1c !important;
}
.sb-content .alert-warning,
main .alert-warning {
    background: var(--sb-warning-050) !important;
    border-color: var(--sb-warning) !important;
    color: #b45309 !important;
}
.sb-content .alert-info,
main .alert-info {
    background: var(--sb-primary-050) !important;
    border-color: var(--sb-primary) !important;
    color: #1e40af !important;
}

/* Page header (legacy class) */
.sb-content .page-header,
main .page-header {
    margin-bottom: 24px !important;
    border: none !important;
    padding: 0 !important;
}
.sb-content .page-header h1,
main .page-header h1 {
    font-size: 1.75rem !important;
    font-weight: 700 !important;
    color: var(--sb-slate-900) !important;
    margin: 0 0 6px !important;
    letter-spacing: -0.02em !important;
}
.sb-content .page-header p,
main .page-header p {
    color: var(--sb-slate-500) !important;
    margin: 0 !important;
    font-size: 14px !important;
}

/* List groups */
.sb-content .list-group-item,
main .list-group-item {
    border: 1px solid var(--sb-slate-200) !important;
    padding: 12px 16px !important;
}

/* Container - prevent extra margins inside main content */
.sb-content .container,
.sb-content .container-fluid,
main .container,
main .container-fluid {
    padding-left: 0 !important;
    padding-right: 0 !important;
    max-width: none !important;
}

/* Section headers (legacy) */
.sb-content .section-title,
main .section-title {
    font-size: 1.125rem !important;
    font-weight: 700 !important;
    color: var(--sb-slate-900) !important;
    margin: 0 0 6px !important;
}
.sb-content .section-desc,
main .section-desc {
    color: var(--sb-slate-500) !important;
    font-size: 13px !important;
    margin: 0 0 16px !important;
}

/* Content card (legacy) */
.sb-content .content-card,
main .content-card {
    background: #fff !important;
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: var(--sb-radius) !important;
    box-shadow: var(--sb-shadow) !important;
    padding: 24px !important;
    margin-bottom: 20px !important;
}

a { color: var(--sb-primary); text-decoration: none; }
a:hover { color: var(--sb-primary-600); }

h1, h2, h3, h4, h5, h6 {
    color: var(--sb-slate-900);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-top: 0;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }

.text-muted-sb { color: var(--sb-slate-500) !important; }

/* -------- App Shell -------- */
.sb-app {
    display: flex;
    min-height: 100vh;
}

/* -------- Sidebar -------- */
.sb-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sb-sidebar-w);
    height: 100vh;
    background: var(--sb-navy);
    color: #fff;
    z-index: 1000;
    transition: transform 0.3s ease;
    overflow-y: auto;
    overflow-x: hidden;
}
.sb-sidebar.collapsed {
    transform: translateX(calc(var(--sb-sidebar-w) * -1));
}

/* -------- Hierarchical Navigation -------- */
.sb-sidebar__section {
    margin-bottom: 4px;
}

.sb-sidebar__section-toggle {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 8px;
    margin: 0;
    font-size: 14px;
    font-weight: 500;
}

.sb-sidebar__section-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.sb-sidebar__section.is-open .sb-sidebar__section-toggle {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.3);
}

.sb-sidebar__section-toggle i:first-child {
    margin-right: 12px;
    font-size: 18px;
}

.sb-sidebar__section-arrow {
    transition: transform 0.3s ease;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.sb-sidebar__section.is-open .sb-sidebar__section-arrow {
    transform: rotate(180deg);
}

.sb-sidebar__section-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease;
    opacity: 0;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 0 0 8px 8px;
    margin: 0;
}

.sb-sidebar__section.is-open .sb-sidebar__section-menu {
    max-height: 2000px;
    opacity: 1;
}

.sb-sidebar__section-item {
    display: flex;
    align-items: center;
    padding: 10px 20px 10px 44px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 13px;
    border-left: 2px solid transparent;
    position: relative;
}

.sb-sidebar__section-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border-left-color: var(--sb-primary);
    padding-left: 48px;
}

.sb-sidebar__section-item.is-active {
    background: rgba(59, 130, 246, 0.15);
    color: #fff;
    border-left-color: var(--sb-primary);
    font-weight: 600;
}

.sb-sidebar__section-item.is-active:hover {
    background: rgba(59, 130, 246, 0.25);
}

/* Dashboard link special styling */
.sb-sidebar__link--dashboard {
    font-weight: 700 !important;
    font-size: 15px !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    border-radius: 8px !important;
    margin-bottom: 8px !important;
}

.sb-sidebar__link--dashboard:hover {
    background: rgba(255, 255, 255, 0.15) !important;
}

.sb-sidebar__link--dashboard span {
    font-weight: 700 !important;
}

/* Help section special styling */
.sb-sidebar__section-menu--help {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin: 4px 0;
    padding: 8px;
}

.sb-sidebar__help-category {
    margin-bottom: 12px;
}

.sb-sidebar__help-category:last-child {
    margin-bottom: 0;
}

.sb-sidebar__help-category__title {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 6px;
    padding: 0 12px;
    letter-spacing: 0.05em;
}

.sb-sidebar__help-category .sb-sidebar__section-item {
    padding-left: 12px;
    font-size: 12px;
}

.sb-sidebar__help-category .sb-sidebar__section-item i {
    font-size: 14px;
}

.sb-sidebar__section-item.is-active {
    background: rgba(59, 130, 246, 0.15);
    color: #fff;
    border-left-color: var(--sb-primary);
    font-weight: 500;
}

.sb-sidebar__section-item.is-active:hover {
    background: rgba(59, 130, 246, 0.25);
}

/* Media Library visibility fix - Force display */
.sb-sidebar__section-item[href*="media_list"],
a[href*="media_list"] {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
    margin: 0 !important;
    padding: 10px 20px 10px 44px !important;
    color: #fff !important;
    text-decoration: none !important;
    align-items: center !important;
    position: relative !important;
}

.sb-sidebar__section-item[href*="media_list"] i,
a[href*="media_list"] i {
    display: inline-block !important;
    visibility: visible !important;
    margin-right: 12px !important;
    font-size: 16px !important;
    color: rgba(255, 255, 255, 0.7) !important;
}

.sb-sidebar__section-item[href*="media_list"] span,
a[href*="media_list"] span {
    display: inline !important;
    visibility: visible !important;
    color: #fff !important;
}

.sb-sidebar__section-item i {
    margin-right: 12px;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
}

.sb-sidebar__section-item:hover i,
.sb-sidebar__section-item.is-active i {
    color: #fff;
}

/* Active section highlighting */
.sb-sidebar__section.is-open .sb-sidebar__section-toggle {
    color: #fff;
}

.sb-sidebar__section.is-open .sb-sidebar__section-toggle i:first-child {
    color: #fff;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sb-sidebar__section-item {
        padding: 12px 20px 12px 44px;
    }
    
    .sb-sidebar__section-item:hover {
        padding-left: 48px;
    }
    
    /* Enterprise layout responsive adjustments */
    :root {
        --sb-content-padding-x: 20px;
        --sb-content-padding-y: 32px;
    }
    
    .sb-content {
        padding: var(--sb-space-6) var(--sb-content-padding-x) var(--sb-content-padding-y);
    }
    
    .sb-page-header__title {
        font-size: 1.5rem;
    }
    
    .sb-topbar__search {
        width: 200px;
    }
    
    .sb-topbar__search input {
        height: 36px;
    }
}

@media (max-width: 1024px) {
    :root {
        --sb-content-padding-x: 24px;
    }
}

/* Large screens - tighter max-width for better readability */
@media (min-width: 1600px) {
    :root {
        --sb-content-max-width: 1200px;
    }
}

/* Enterprise spacing utilities */
.sb-u-mb-1 { margin-bottom: var(--sb-space-1) !important; }
.sb-u-mb-2 { margin-bottom: var(--sb-space-2) !important; }
.sb-u-mb-3 { margin-bottom: var(--sb-space-3) !important; }
.sb-u-mb-4 { margin-bottom: var(--sb-space-4) !important; }
.sb-u-mb-5 { margin-bottom: var(--sb-space-5) !important; }
.sb-u-mb-6 { margin-bottom: var(--sb-space-6) !important; }
.sb-u-mb-8 { margin-bottom: var(--sb-space-8) !important; }

.sb-u-mt-1 { margin-top: var(--sb-space-1) !important; }
.sb-u-mt-2 { margin-top: var(--sb-space-2) !important; }
.sb-u-mt-3 { margin-top: var(--sb-space-3) !important; }
.sb-u-mt-4 { margin-top: var(--sb-space-4) !important; }
.sb-u-mt-5 { margin-top: var(--sb-space-5) !important; }
.sb-u-mt-6 { margin-top: var(--sb-space-6) !important; }

.sb-u-p-2 { padding: var(--sb-space-2) !important; }
.sb-u-p-3 { padding: var(--sb-space-3) !important; }
.sb-u-p-4 { padding: var(--sb-space-4) !important; }
.sb-u-p-5 { padding: var(--sb-space-5) !important; }
.sb-u-p-6 { padding: var(--sb-space-6) !important; }

.sb-u-gap-2 { gap: var(--sb-space-2) !important; }
.sb-u-gap-3 { gap: var(--sb-space-3) !important; }
.sb-u-gap-4 { gap: var(--sb-space-4) !important; }
.sb-u-gap-5 { gap: var(--sb-space-5) !important; }
.sb-u-gap-6 { gap: var(--sb-space-6) !important; }

.sb-u-flex { display: flex !important; }
.sb-u-flex-col { flex-direction: column !important; }
.sb-u-items-center { align-items: center !important; }
.sb-u-justify-between { justify-content: space-between !important; }

/* Visual separator for better hierarchy */
.sb-separator {
    height: 1px;
    background: var(--sb-slate-200);
    margin: var(--sb-space-6) 0;
}

.sb-sidebar__brand {
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--sb-topbar-h);
    padding: 0 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.sb-sidebar__brand:hover { color: #fff; }

.sb-sidebar__brand-logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--sb-primary) 0%, var(--sb-primary-700) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 16px;
}

.sb-sidebar__nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 8px;
    min-height: 0;
}

.sb-sidebar__section {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(148, 163, 184, 0.7);
    padding: 16px 12px 8px;
}

.sb-sidebar__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 2px;
    color: #cbd5e1;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--sb-transition);
}

.sb-sidebar__link i {
    font-size: 18px;
    width: 20px;
    text-align: center;
}

.sb-sidebar__link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.sb-sidebar__link.is-active {
    background: var(--sb-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.sb-sidebar__footer {
    padding: 12px 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 12px;
    color: rgba(148, 163, 184, 0.8);
}

/* -------- Main + Topbar -------- */
.sb-main {
    flex: 1;
    margin-left: var(--sb-sidebar-w);
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.sb-topbar {
    height: var(--sb-topbar-h);
    background: #fff;
    border-bottom: 1px solid var(--sb-slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--sb-content-padding-x);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.sb-topbar__left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sb-topbar__toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--sb-slate-600);
    font-size: 22px;
    cursor: pointer;
    padding: 6px;
}

.sb-topbar__search {
    position: relative;
    width: 320px;
}

.sb-topbar__search input {
    width: 100%;
    height: 40px;
    padding: 0 14px 0 40px;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
    background: var(--sb-slate-050);
    color: var(--sb-slate-800);
    transition: var(--sb-transition);
}

.sb-topbar__search input:focus {
    outline: none;
    border-color: var(--sb-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.sb-topbar__search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sb-slate-400);
    font-size: 16px;
}

.sb-topbar__right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sb-topbar__icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--sb-slate-600);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--sb-transition);
}

.sb-topbar__icon-btn:hover {
    background: var(--sb-slate-050);
    color: var(--sb-slate-900);
}

.sb-topbar__profile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 10px 6px 6px;
    border-radius: 8px;
    border: 1px solid var(--sb-slate-200);
    cursor: pointer;
    transition: var(--sb-transition);
}

.sb-topbar__profile:hover {
    background: var(--sb-slate-050);
}

.sb-topbar__avatar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--sb-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
}

.sb-topbar__name {
    font-size: 14px;
    font-weight: 500;
    color: var(--sb-slate-700);
}

.sb-topbar__role {
    font-size: 12px;
    color: var(--sb-slate-500);
}

/* -------- Content Area -------- */
.sb-content {
    flex: 1;
    padding: 64px 40px 64px;
    max-width: 100%;
    min-height: calc(100vh - var(--sb-topbar-h));
    background: #f8fafc;
}

/* Unified container for enterprise grid alignment */
.sb-container {
    max-width: var(--sb-content-max-width);
    margin: 0 auto;
    padding: 0;
}

/* Enterprise page header structure */
.sb-page-header {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--sb-slate-200);
}

/* Support both old and new structure for backward compatibility */
.sb-page-header > div {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.sb-page-header__row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.sb-page-header__title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--sb-slate-900);
    margin: 0 0 12px 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.sb-page-header__subtitle {
    color: var(--sb-slate-500);
    margin: 0;
    font-size: 16px;
    line-height: 1.6;
}

.sb-page-header__actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

/* -------- Breadcrumbs -------- */
.sb-breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--sb-space-2);
    font-size: 13px;
    color: var(--sb-slate-500);
    margin-bottom: var(--sb-space-4);
}

.sb-breadcrumbs a { color: var(--sb-slate-500); }
.sb-breadcrumbs a:hover { color: var(--sb-primary); }
.sb-breadcrumbs .sep { color: var(--sb-slate-300); }
.sb-breadcrumbs .current { color: var(--sb-slate-800); font-weight: 500; }

/* -------- Toolbar -------- */
.sb-toolbar {
    display: flex;
    align-items: center;
    gap: var(--sb-space-3);
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    padding: var(--sb-space-3) var(--sb-space-4);
    margin-bottom: var(--sb-space-6);
    box-shadow: var(--sb-shadow-sm);
    flex-wrap: wrap;
}

.sb-toolbar__search {
    flex: 1;
    min-width: 240px;
    position: relative;
}

.sb-toolbar__search input {
    width: 100%;
    height: 40px;
    padding: 0 14px 0 40px;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius-sm);
    font-size: 14px;
}

.sb-toolbar__search input:focus {
    outline: none;
    border-color: var(--sb-primary);
    box-shadow: 0 0 0 3px var(--sb-primary-050);
}

.sb-toolbar__search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sb-slate-400);
    font-size: 18px;
}

/* -------- Cards -------- */
.sb-card {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    box-shadow: var(--sb-shadow);
    overflow: hidden;
    margin-bottom: var(--sb-space-6);
}

.sb-card__header {
    padding: var(--sb-space-4) var(--sb-space-5);
    border-bottom: 1px solid var(--sb-slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sb-space-3);
}

.sb-card__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--sb-slate-900);
    margin: 0;
}

.sb-card__body { padding: var(--sb-space-5); }
.sb-card__body--tight { padding: var(--sb-space-3) var(--sb-space-4); }
.sb-card__body--flush { padding: 0; }

.sb-card__footer {
    padding: var(--sb-space-4) var(--sb-space-5);
    border-top: 1px solid var(--sb-slate-200);
    background: var(--sb-slate-050);
}

/* -------- Stat Card -------- */
.sb-stat {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    box-shadow: var(--sb-shadow);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--sb-transition);
}

.sb-stat:hover {
    box-shadow: var(--sb-shadow-md);
    transform: translateY(-1px);
}

.sb-stat__icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.sb-stat__icon--primary { background: var(--sb-primary-050); color: var(--sb-primary); }
.sb-stat__icon--success { background: var(--sb-success-050); color: var(--sb-success); }
.sb-stat__icon--warning { background: var(--sb-warning-050); color: var(--sb-warning); }
.sb-stat__icon--danger  { background: var(--sb-danger-050);  color: var(--sb-danger); }
.sb-stat__icon--info    { background: var(--sb-info-050);    color: var(--sb-info); }

.sb-stat__body { flex: 1; min-width: 0; }

.sb-stat__label {
    font-size: 13px;
    color: var(--sb-slate-500);
    margin: 0 0 6px;
    font-weight: 500;
}

.sb-stat__value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--sb-slate-900);
    line-height: 1.1;
    margin: 0 0 4px;
    letter-spacing: -0.02em;
}

.sb-stat__delta {
    font-size: 12px;
    font-weight: 600;
    color: var(--sb-success);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.sb-stat__delta--down { color: var(--sb-danger); }
.sb-stat__delta--neutral { color: var(--sb-slate-500); }

/* -------- Buttons -------- */
.sb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--sb-transition);
    text-decoration: none;
    line-height: 1.4;
}

.sb-btn--sm { padding: 6px 12px; font-size: 13px; }
.sb-btn--lg { padding: 14px 26px; font-size: 15px; }

.sb-btn--primary {
    background: var(--sb-primary);
    color: #fff;
    border-color: var(--sb-primary);
}

.sb-btn--primary:hover {
    background: var(--sb-primary-600);
    border-color: var(--sb-primary-600);
}

.sb-btn--secondary {
    background: #fff;
    color: var(--sb-slate-700);
    border-color: var(--sb-slate-200);
}

.sb-btn--secondary:hover {
    background: var(--sb-slate-050);
    border-color: var(--sb-slate-300);
}

.sb-btn--ghost {
    background: transparent;
    color: var(--sb-slate-600);
    border-color: transparent;
}

.sb-btn--ghost:hover {
    background: var(--sb-slate-050);
    color: var(--sb-slate-800);
}

.sb-btn--danger {
    background: var(--sb-danger);
    color: #fff;
    border-color: var(--sb-danger);
}

.sb-btn--danger:hover { background: #dc2626; border-color: #dc2626; }

.sb-btn--sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.sb-btn--lg { padding: 12px 22px; font-size: 15px; border-radius: 12px; }
.sb-btn--block { width: 100%; }

/* -------- Badges -------- */
.sb-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
    background: var(--sb-slate-100);
    color: var(--sb-slate-700);
}

.sb-badge--primary { background: var(--sb-primary-050); color: var(--sb-primary-700); }
.sb-badge--success { background: var(--sb-success-050); color: #047857; }
.sb-badge--warning { background: var(--sb-warning-050); color: #b45309; }
.sb-badge--danger  { background: var(--sb-danger-050);  color: #b91c1c; }
.sb-badge--info    { background: var(--sb-info-050);    color: #0369a1; }

/* -------- Tables -------- */
.sb-table-wrap {
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius);
    box-shadow: var(--sb-shadow);
    overflow: hidden;
}

.sb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.sb-table thead th {
    background: var(--sb-slate-050);
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--sb-slate-500);
    padding: 12px 16px;
    border-bottom: 1px solid var(--sb-slate-200);
    white-space: nowrap;
}

.sb-table tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--sb-slate-100);
    color: var(--sb-slate-800);
    vertical-align: middle;
}

.sb-table tbody tr:last-child td { border-bottom: none; }

.sb-table tbody tr:hover { background: var(--sb-slate-050); }

.sb-table__actions {
    display: flex;
    gap: 4px;
    justify-content: flex-end;
}

.sb-table__actions a,
.sb-table__actions button {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--sb-slate-500);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: var(--sb-transition);
}

.sb-table__actions a:hover { background: var(--sb-primary-050); color: var(--sb-primary); }

/* -------- Empty State -------- */
.sb-empty {
    text-align: center;
    padding: 56px 24px;
    color: var(--sb-slate-500);
}

.sb-empty__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--sb-slate-100);
    color: var(--sb-slate-400);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 16px;
}

.sb-empty__title {
    color: var(--sb-slate-800);
    font-weight: 600;
    font-size: 1rem;
    margin: 0 0 6px;
}

.sb-empty__text {
    color: var(--sb-slate-500);
    margin: 0 0 18px;
    font-size: 14px;
}

/* -------- Forms -------- */
.sb-form-group { margin-bottom: 18px; }

.sb-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--sb-slate-700);
    margin-bottom: 6px;
}

.sb-label__req { color: var(--sb-danger); margin-left: 2px; }

.sb-input,
.sb-select,
.sb-textarea {
    width: 100%;
    min-height: 40px;
    padding: 9px 12px;
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: 10px;
    font-size: 14px;
    color: var(--sb-slate-900);
    font-family: inherit;
    transition: var(--sb-transition);
}

.sb-input:focus,
.sb-select:focus,
.sb-textarea:focus {
    outline: none;
    border-color: var(--sb-primary);
    box-shadow: 0 0 0 3px var(--sb-primary-050);
}

.sb-textarea { min-height: 100px; resize: vertical; }

.sb-help {
    font-size: 12px;
    color: var(--sb-slate-500);
    margin-top: 4px;
}

/* -------- Alerts -------- */
.sb-alert {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px solid transparent;
    font-size: 14px;
    margin-bottom: 16px;
}

.sb-alert i { font-size: 20px; flex-shrink: 0; }

.sb-alert--info    { background: var(--sb-info-050);    color: #075985; border-color: #bae6fd; }
.sb-alert--success { background: var(--sb-success-050); color: #065f46; border-color: #a7f3d0; }
.sb-alert--warning { background: var(--sb-warning-050); color: #92400e; border-color: #fde68a; }
.sb-alert--danger  { background: var(--sb-danger-050);  color: #991b1b; border-color: #fecaca; }

/* -------- Pagination -------- */
.sb-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--sb-slate-500);
}

.sb-pagination__nav { display: flex; gap: 4px; }

.sb-pagination__link {
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid var(--sb-slate-200);
    background: #fff;
    color: var(--sb-slate-700);
    font-size: 13px;
    font-weight: 500;
}
.sb-pagination__link:hover { background: var(--sb-slate-050); color: var(--sb-primary); }
.sb-pagination__link.is-active {
    background: var(--sb-primary);
    color: #fff;
    border-color: var(--sb-primary);
}
.sb-pagination__link[disabled] { opacity: 0.4; pointer-events: none; }

/* -------- Grid Layout -------- */
.sb-grid { display: grid; gap: 20px; }
.sb-grid--2 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.sb-grid--3 { 
    grid-template-columns: 2fr 1fr; 
    gap: 24px;
}
@media (max-width: 968px) {
    .sb-grid--3 { grid-template-columns: 1fr; }
}
.sb-grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.sb-grid__main { 
    min-width: 0; /* Prevent flex item from overflowing */
}
.sb-grid__sidebar { 
    min-width: 280px; /* Minimum width for sidebar */
}

/* -------- Avatar -------- */
.sb-avatar { 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    border-radius: 50%; 
    font-size: 14px;
    color: #fff;
}
.sb-avatar--sm { 
    width: 32px; 
    height: 32px; 
    font-size: 12px;
}
.sb-avatar--primary { 
    background: var(--sb-primary); 
}
.sb-avatar--primary i { 
    font-size: 14px; 
}

.sb-row { display: flex; gap: 16px; flex-wrap: wrap; }
.sb-col { flex: 1 1 0; min-width: 0; }

/* -------- Auth layout -------- */
.sb-auth {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--sb-slate-050);
}

.sb-auth__panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
}

.sb-auth__hero {
    background: linear-gradient(135deg, var(--sb-primary) 0%, var(--sb-navy) 100%);
    color: #fff;
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sb-auth__card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid var(--sb-slate-200);
    border-radius: var(--sb-radius-lg);
    padding: 32px;
    box-shadow: var(--sb-shadow-md);
}

/* -------- Responsive -------- */
@media (max-width: 991px) {
    .sb-sidebar { transform: translateX(-100%); }
    .sb-sidebar.is-open { transform: translateX(0); box-shadow: var(--sb-shadow-lg); }
    .sb-main { margin-left: 0; }
    .sb-content { padding: 20px; }
    .sb-auth { grid-template-columns: 1fr; }
    .sb-auth__hero { display: none; }
}

@media (max-width: 576px) {
    .sb-topbar { padding: 0 16px; }
    .sb-topbar__search { display: none; }
    .sb-content { padding: 16px; }
    .sb-page-header__title { font-size: 1.4rem; }
}

/* -------- Utilities -------- */
.sb-u-mb-0 { margin-bottom: 0 !important; }
.sb-u-mb-1 { margin-bottom: 8px !important; }
.sb-u-mb-2 { margin-bottom: 16px !important; }
.sb-u-mb-3 { margin-bottom: 24px !important; }
.sb-u-mt-2 { margin-top: 16px !important; }
.sb-u-flex { display: flex !important; }
.sb-u-items-center { align-items: center; }
.sb-u-justify-between { justify-content: space-between; }
.sb-u-gap-1 { gap: 8px; }
.sb-u-gap-2 { gap: 16px; }
.sb-u-text-center { text-align: center; }
.sb-u-w-full { width: 100%; }

/* Backdrop for mobile sidebar */
.sb-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    z-index: 1030;
    display: none;
}
.sb-backdrop.is-visible { display: block; }

/* -------- Definition List -------- */
.sb-dl { margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.sb-dl > div { display: grid; grid-template-columns: 140px 1fr; gap: 12px; align-items: baseline; }
.sb-dl dt { color: var(--sb-slate-500); font-size: 13px; font-weight: 500; margin: 0; }
.sb-dl dd { color: var(--sb-slate-800); font-size: 14px; font-weight: 500; margin: 0; }
@media (max-width: 640px) {
    .sb-dl > div { grid-template-columns: 1fr; gap: 2px; }
}

/* -------- Progress Bar -------- */
.sb-progress { width: 100%; height: 6px; background: var(--sb-slate-100); border-radius: 999px; overflow: hidden; }
.sb-progress__bar { height: 100%; background: var(--sb-primary); border-radius: 999px; transition: width 0.3s ease; }
.sb-progress__bar--success { background: var(--sb-success); }
.sb-progress__bar--warning { background: var(--sb-warning); }
.sb-progress__bar--danger { background: var(--sb-danger); }

/* -------- List Group -------- */
.sb-list-group { display: flex; flex-direction: column; gap: 4px; }
.sb-list-group__item { 
    background: #fff; 
    border: 1px solid var(--sb-slate-200); 
    border-radius: var(--sb-radius); 
    padding: 12px 16px; 
    transition: all 0.2s ease;
}
.sb-list-group__item:hover { 
    border-color: var(--sb-slate-300); 
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* -------- Badge -------- */
.sb-badge { 
    display: inline-block; 
    padding: 4px 8px; 
    font-size: 11px; 
    font-weight: 500; 
    border-radius: 4px; 
    text-transform: uppercase; 
    letter-spacing: 0.5px;
}
.sb-badge--primary { background: var(--sb-primary-050); color: var(--sb-primary-700); border: 1px solid var(--sb-primary-200); }
.sb-badge--success { background: var(--sb-success-050); color: var(--sb-success-700); border: 1px solid var(--sb-success-200); }
.sb-badge--secondary { background: var(--sb-slate-100); color: var(--sb-slate-600); }

/* -------- Alert -------- */
.sb-alert { 
    padding: 12px 16px; 
    border-radius: var(--sb-radius); 
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sb-alert--info { 
    background: var(--sb-primary-050); 
    border-color: var(--sb-primary-200); 
    color: var(--sb-primary-700);
}

/* -------- Card Header -------- */
.sb-card__header { 
    background: #fff; 
    border-bottom: 1px solid var(--sb-slate-200); 
    padding: 16px 20px; 
    display: flex; 
    align-items: center; 
    justify-content: space-between;
}
.sb-card__header--danger { 
    background: var(--sb-danger); 
    border-bottom: none; 
}
.sb-card__header--danger .sb-card__title { color: #fff; }
.sb-card__header--warning { 
    background: var(--sb-warning); 
    border-bottom: none; 
}
.sb-card__header--warning .sb-card__title { color: #fff; }
.sb-card__header--info { 
    background: var(--sb-primary); 
    border-bottom: none; 
}
.sb-card__header--info .sb-card__title { color: #fff; }
.sb-card__title { margin: 0; font-size: 16px; font-weight: 600; color: var(--sb-slate-800); }
.sb-card__subtitle { margin: 0 0 8px 0; font-size: 13px; color: var(--sb-slate-500); }
.sb-card__text { margin: 0 0 12px 0; color: var(--sb-slate-600); line-height: 1.5; }
.sb-card__meta { margin-bottom: 12px; }
.sb-card__actions { display: flex; justify-content: space-between; align-items: center; }
.sb-card--full-height { height: 100%; display: flex; flex-direction: column; }
.sb-card--full-height .sb-card__body { flex: 1; display: flex; flex-direction: column; }
.sb-card--full-height .sb-card__actions { margin-top: auto; }
.sb-card__body { padding: 20px; }

/* -------- Stat Card -------- */
.sb-stat-card { 
    background: #fff; 
    border: 1px solid var(--sb-slate-200); 
    border-radius: var(--sb-radius); 
    box-shadow: var(--sb-shadow); 
    overflow: hidden;
}
.sb-stat-card--primary { border-top: 4px solid var(--sb-primary); }
.sb-stat-card--success { border-top: 4px solid var(--sb-success); }
.sb-stat-card--info { border-top: 4px solid var(--sb-primary); }
.sb-stat-card--warning { border-top: 4px solid var(--sb-warning); }
.sb-stat-card--danger { border-top: 4px solid var(--sb-danger); }
.sb-stat-card__body { 
    padding: 24px; 
    text-align: center;
}
.sb-stat-card__title { 
    margin: 0 0 8px 0; 
    font-size: 14px; 
    font-weight: 500; 
    color: var(--sb-slate-600); 
    text-transform: uppercase; 
    letter-spacing: 0.5px;
}
.sb-stat-card__value { 
    font-size: 32px; 
    font-weight: 700; 
    color: var(--sb-slate-800); 
    line-height: 1;
}

/* -------- Section Header -------- */
.sb-section-header { 
    margin-bottom: 20px; 
    padding-bottom: 12px; 
    border-bottom: 1px solid var(--sb-slate-200);
}
.sb-section-header h2 { 
    margin: 0; 
    font-size: 20px; 
    font-weight: 600; 
    color: var(--sb-slate-800);
}

/* -------- Badge Variants -------- */
.sb-badge--danger { 
    background: var(--sb-danger-050); 
    color: var(--sb-danger-700); 
    border: 1px solid var(--sb-danger-200);
}
.sb-badge--warning { 
    background: var(--sb-warning-050); 
    color: var(--sb-warning-700); 
    border: 1px solid var(--sb-warning-200);
}

/* -------- Button Variants -------- */
.sb-btn--sm { padding: 6px 12px; font-size: 13px; }
.sb-btn--success { background: var(--sb-success); border-color: var(--sb-success); color: #fff; }
.sb-btn--success:hover { background: var(--sb-success-600); border-color: var(--sb-success-600); }
.sb-btn--outline { 
    background: transparent; 
    border: 1px solid var(--sb-slate-300); 
    color: var(--sb-slate-600);
}
.sb-btn--outline:hover { 
    background: var(--sb-slate-050); 
    border-color: var(--sb-slate-400); 
    color: var(--sb-slate-700);
}
.sb-btn--danger { 
    background: var(--sb-danger); 
    border-color: var(--sb-danger); 
    color: #fff;
}
.sb-btn--danger:hover { 
    background: var(--sb-danger-600); 
    border-color: var(--sb-danger-600);
}
.sb-btn--outline.sb-btn--danger { 
    background: transparent; 
    border-color: var(--sb-danger-200); 
    color: var(--sb-danger-600);
}
.sb-btn--outline.sb-btn--danger:hover { 
    background: var(--sb-danger-050); 
    border-color: var(--sb-danger-300); 
    color: var(--sb-danger-700);
}

/* -------- List -------- */
.sb-list { 
    list-style: none; 
    padding: 0; 
    margin: 12px 0; 
}
.sb-list li { 
    padding: 8px 0; 
    border-bottom: 1px solid var(--sb-slate-100); 
    color: var(--sb-slate-600);
}
.sb-list li:last-child { 
    border-bottom: none; 
}

/* -------- Utility Classes -------- */
.text-muted-sb { color: var(--sb-slate-500) !important; }
.sb-bg-light { background: var(--sb-slate-050) !important; }
.sb-u-mt-3 { margin-top: 24px !important; }
.sb-u-mb-3 { margin-bottom: 24px !important; }
.sb-u-mt-2 { margin-top: 16px !important; }
.sb-u-mb-2 { margin-bottom: 16px !important; }
.sb-u-mt-1 { margin-top: 8px !important; }
.sb-u-mb-1 { margin-bottom: 8px !important; }
.sb-u-m-0 { margin: 0 !important; }
.sb-u-p-2 { padding: 16px !important; }
.sb-u-flex { display: flex !important; }
.sb-u-gap-1 { gap: 8px !important; }
.sb-u-gap-2 { gap: 16px !important; }

/* =====================================================================
   UNIFIED CARD SYSTEM — Platform-Wide Standardization
   Reusable enterprise card component with colored top accent borders.
   ===================================================================== */

/* Base hover state — subtle lift, applied platform-wide */
.sb-card {
    position: relative !important;
    transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease !important;
}
.sb-card:hover {
    box-shadow: var(--sb-shadow-md) !important;
    border-color: var(--sb-slate-300) !important;
}

/* Interactive cards (clickable / linked) */
.sb-card--interactive {
    cursor: pointer !important;
}
.sb-card--interactive:hover {
    transform: translateY(-2px) !important;
}

/* Top accent border — applied via ::before so it works on any .sb-card */
.sb-card.card-accent-blue,
.sb-card.card-accent-green,
.sb-card.card-accent-orange,
.sb-card.card-accent-purple,
.sb-card.card-accent-red,
.sb-card.card-accent-slate {
    overflow: hidden !important;
}
.sb-card.card-accent-blue::before,
.sb-card.card-accent-green::before,
.sb-card.card-accent-orange::before,
.sb-card.card-accent-purple::before,
.sb-card.card-accent-red::before,
.sb-card.card-accent-slate::before {
    content: "" !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 3px !important;
    border-top-left-radius: var(--sb-radius) !important;
    border-top-right-radius: var(--sb-radius) !important;
    z-index: 1 !important;
}
.sb-card.card-accent-blue::before   { background: var(--sb-primary) !important; }
.sb-card.card-accent-green::before  { background: var(--sb-success) !important; }
.sb-card.card-accent-orange::before { background: var(--sb-warning) !important; }
.sb-card.card-accent-purple::before { background: var(--sb-info) !important; }
.sb-card.card-accent-red::before    { background: var(--sb-danger) !important; }
.sb-card.card-accent-slate::before  { background: var(--sb-slate-500) !important; }

/* Standalone accent classes (also work without .sb-card prefix) */
.card-accent-blue,
.card-accent-green,
.card-accent-orange,
.card-accent-purple,
.card-accent-red,
.card-accent-slate {
    position: relative;
}

/* =====================================================================
   BOOTSTRAP CARD SHIM
   Maps legacy Bootstrap .card / .card-body / .card-header / .card-footer
   onto the unified .sb-card design tokens for instant consistency.
   ===================================================================== */
.sb-content .card,
.sb-main .card {
    background: #fff !important;
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: var(--sb-radius) !important;
    box-shadow: var(--sb-shadow) !important;
    margin-bottom: 20px !important;
    transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease !important;
    position: relative !important;
}
.sb-content .card:hover,
.sb-main .card:hover {
    box-shadow: var(--sb-shadow-md) !important;
    border-color: var(--sb-slate-300) !important;
}
.sb-content .card-header,
.sb-main .card-header {
    background: #fff !important;
    border-bottom: 1px solid var(--sb-slate-200) !important;
    padding: 16px 20px !important;
    border-top-left-radius: var(--sb-radius) !important;
    border-top-right-radius: var(--sb-radius) !important;
}
.sb-content .card-body,
.sb-main .card-body {
    padding: 20px !important;
}
.sb-content .card-footer,
.sb-main .card-footer {
    background: var(--sb-slate-050) !important;
    border-top: 1px solid var(--sb-slate-200) !important;
    padding: 14px 20px !important;
}
.sb-content .card-title,
.sb-main .card-title {
    margin: 0 0 4px 0 !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    color: var(--sb-slate-800) !important;
}

/* Accent variants on Bootstrap cards too */
.sb-content .card.card-accent-blue,
.sb-content .card.card-accent-green,
.sb-content .card.card-accent-orange,
.sb-content .card.card-accent-purple,
.sb-content .card.card-accent-red,
.sb-main .card.card-accent-blue,
.sb-main .card.card-accent-green,
.sb-main .card.card-accent-orange,
.sb-main .card.card-accent-purple,
.sb-main .card.card-accent-red {
    overflow: hidden !important;
}
.sb-content .card.card-accent-blue::before,
.sb-main .card.card-accent-blue::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--sb-primary); z-index: 1;
}
.sb-content .card.card-accent-green::before,
.sb-main .card.card-accent-green::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--sb-success); z-index: 1;
}
.sb-content .card.card-accent-orange::before,
.sb-main .card.card-accent-orange::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--sb-warning); z-index: 1;
}
.sb-content .card.card-accent-purple::before,
.sb-main .card.card-accent-purple::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--sb-info); z-index: 1;
}
.sb-content .card.card-accent-red::before,
.sb-main .card.card-accent-red::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--sb-danger); z-index: 1;
}

/* Strip Bootstrap defaults that conflict (gradient bg, heavy shadows) */
.sb-content .card.bg-primary,
.sb-content .card.bg-success,
.sb-content .card.bg-warning,
.sb-content .card.bg-danger,
.sb-content .card.bg-info {
    background: #fff !important;
    color: var(--sb-slate-800) !important;
}

/* =====================================================================
   DEFAULT TOP ACCENT — applied to EVERY card across the platform
   so all containers match the Lecturer Dashboard look.
   Use .card-accent-none to opt out, or any .card-accent-* to override.
   ===================================================================== */
.sb-card,
.sb-content .card,
.sb-main .card {
    overflow: hidden !important;
}

.sb-card::before,
.sb-content .card::before,
.sb-main .card::before {
    content: "" !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 3px !important;
    background: var(--sb-primary) !important;  /* default = blue */
    z-index: 1 !important;
}

/* Auto-rotate accent colour for stat-style grids (4-up dashboards) */
.sb-grid > .sb-card:nth-child(4n+1)::before,
.sb-grid > .card:nth-child(4n+1)::before,
.row > [class*="col"]:nth-child(4n+1) > .sb-card::before,
.row > [class*="col"]:nth-child(4n+1) > .card::before { background: var(--sb-primary) !important; }

.sb-grid > .sb-card:nth-child(4n+2)::before,
.sb-grid > .card:nth-child(4n+2)::before,
.row > [class*="col"]:nth-child(4n+2) > .sb-card::before,
.row > [class*="col"]:nth-child(4n+2) > .card::before { background: var(--sb-success) !important; }

.sb-grid > .sb-card:nth-child(4n+3)::before,
.sb-grid > .card:nth-child(4n+3)::before,
.row > [class*="col"]:nth-child(4n+3) > .sb-card::before,
.row > [class*="col"]:nth-child(4n+3) > .card::before { background: var(--sb-info) !important; }

.sb-grid > .sb-card:nth-child(4n)::before,
.sb-grid > .card:nth-child(4n)::before,
.row > [class*="col"]:nth-child(4n) > .sb-card::before,
.row > [class*="col"]:nth-child(4n) > .card::before { background: var(--sb-warning) !important; }

/* Explicit accent classes always win over auto-rotation */
.sb-card.card-accent-blue::before,
.sb-content .card.card-accent-blue::before,
.sb-main .card.card-accent-blue::before { background: var(--sb-primary) !important; }
.sb-card.card-accent-green::before,
.sb-content .card.card-accent-green::before,
.sb-main .card.card-accent-green::before { background: var(--sb-success) !important; }
.sb-card.card-accent-orange::before,
.sb-content .card.card-accent-orange::before,
.sb-main .card.card-accent-orange::before { background: var(--sb-warning) !important; }
.sb-card.card-accent-purple::before,
.sb-content .card.card-accent-purple::before,
.sb-main .card.card-accent-purple::before { background: var(--sb-info) !important; }
.sb-card.card-accent-red::before,
.sb-content .card.card-accent-red::before,
.sb-main .card.card-accent-red::before { background: var(--sb-danger) !important; }
.sb-card.card-accent-slate::before,
.sb-content .card.card-accent-slate::before,
.sb-main .card.card-accent-slate::before { background: var(--sb-slate-500) !important; }

/* Escape hatch — hide the accent on a specific card */
.sb-card.card-accent-none::before,
.sb-content .card.card-accent-none::before,
.sb-main .card.card-accent-none::before { display: none !important; }

/* =====================================================================
   Enterprise Topbar System
   ===================================================================== */

.sb-main {
    padding-top: 64px;
}

.sb-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid var(--sb-slate-200);
    z-index: 100;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.sb-topbar__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 24px;
    max-width: 100%;
}

.sb-topbar__left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.sb-topbar__right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.sb-topbar__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: 8px;
    color: var(--sb-slate-600);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.sb-topbar__toggle:hover {
    background: var(--sb-slate-100);
    color: var(--sb-slate-900);
}

.sb-topbar__toggle i {
    font-size: 20px;
}

.sb-topbar__search {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--sb-slate-100);
    border-radius: 8px;
    padding: 8px 12px;
    max-width: 400px;
    width: 100%;
    transition: all 0.2s ease;
}

.sb-topbar__search:focus-within {
    background: #ffffff;
    border: 1px solid var(--sb-slate-300);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.sb-topbar__search i {
    font-size: 18px;
    color: var(--sb-slate-500);
    flex-shrink: 0;
}

.sb-topbar__search input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 14px;
    color: var(--sb-slate-900);
    outline: none;
    min-width: 0;
}

.sb-topbar__search input::placeholder {
    color: var(--sb-slate-500);
}

.sb-topbar__action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: 8px;
    color: var(--sb-slate-600);
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.sb-topbar__action:hover {
    background: var(--sb-slate-100);
    color: var(--sb-slate-900);
}

.sb-topbar__action i {
    font-size: 20px;
}

.sb-topbar__badge {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--sb-danger);
    border-radius: 50%;
    border: 2px solid #ffffff;
}

.sb-topbar__user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--sb-slate-900);
    margin-left: 8px;
}

/* =====================================================================
   Enterprise User Menu Component (Removed - Simplified topbar)
   ===================================================================== */

.sb-user-menu {
    position: relative;
    flex-shrink: 0;
}

.sb-user-menu__trigger {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.sb-user-menu__trigger:hover {
    background: var(--sb-slate-100);
}

.sb-user-menu__avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--sb-primary);
    color: #ffffff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}

.sb-user-menu__name {
    font-size: 14px;
    font-weight: 600;
    color: var(--sb-slate-900);
    line-height: 1.4;
}

.sb-user-menu__arrow {
    font-size: 16px;
    color: var(--sb-slate-500);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.sb-user-menu.is-open .sb-user-menu__arrow {
    transform: rotate(180deg);
}

.sb-user-menu__dropdown {
    position: absolute !important;
    top: calc(100% + 8px) !important;
    right: 0 !important;
    width: 280px !important;
    background: #ffffff !important;
    border: 1px solid var(--sb-slate-200) !important;
    border-radius: 12px !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 8px 20px rgba(0, 0, 0, 0.1) !important;
    padding: 8px !important;
    z-index: 1000 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-8px) !important;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
    pointer-events: none !important;
}

.sb-user-menu.is-open .sb-user-menu__dropdown {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    pointer-events: auto !important;
}

.sb-user-menu__header {
    padding: 16px;
    border-bottom: 1px solid var(--sb-slate-100);
    margin-bottom: 8px;
}

.sb-user-menu__info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sb-user-menu__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--sb-slate-900);
    line-height: 1.4;
}

.sb-user-menu__subtitle {
    font-size: 12px;
    color: var(--sb-slate-500);
    line-height: 1.4;
}

.sb-user-menu__divider {
    height: 1px;
    background: var(--sb-slate-200);
    margin: 8px 0;
}

.sb-user-menu__items {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sb-user-menu__item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--sb-slate-700);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.sb-user-menu__item:hover {
    background: var(--sb-slate-100);
    color: var(--sb-slate-900);
}

.sb-user-menu__item i {
    font-size: 18px;
    color: var(--sb-slate-500);
    flex-shrink: 0;
}

.sb-user-menu__item:hover i {
    color: var(--sb-slate-700);
}

.sb-user-menu__item--danger {
    color: var(--sb-danger);
}

.sb-user-menu__item--danger:hover {
    background: #fef2f2;
}

.sb-user-menu__item--danger i {
    color: var(--sb-danger);
}

/* =====================================================================
   Enterprise Page Header System
   ===================================================================== */

.sb-page-header {
    margin-top: 64px;
    padding: 32px 24px 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--sb-slate-200);
}

.sb-page-header__breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--sb-slate-500);
}

.sb-page-header__breadcrumb-item {
    color: var(--sb-slate-500);
    text-decoration: none;
    transition: color 0.2s ease;
}

.sb-page-header__breadcrumb-item:hover {
    color: var(--sb-slate-900);
}

.sb-page-header__breadcrumb-separator {
    color: var(--sb-slate-400);
}

.sb-page-header__breadcrumb-item--active {
    color: var(--sb-slate-900);
    font-weight: 600;
}

.sb-page-header__title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.sb-page-header__title {
    font-size: 28px;
    font-weight: 700;
    color: var(--sb-slate-900);
    margin: 0;
    line-height: 1.3;
}

.sb-page-header__description {
    font-size: 14px;
    color: var(--sb-slate-600);
    margin-top: 8px;
    line-height: 1.6;
    max-width: 800px;
}

.sb-page-header__actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

/* =====================================================================
   Custom Dropdown Component - Enterprise-grade styling
   ===================================================================== */

.sb-dropdown {
    position: relative;
    display: inline-block;
}

.sb-dropdown__menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    min-width: 260px;
    background: #ffffff;
    border: 1px solid var(--sb-slate-200);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 8px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.sb-dropdown.is-open .sb-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.sb-dropdown__header {
    padding: 16px;
    border-bottom: 1px solid var(--sb-slate-100);
    margin-bottom: 8px;
}

.sb-dropdown__user-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--sb-slate-900);
    line-height: 1.4;
}

.sb-dropdown__user-role {
    display: block;
    font-size: 12px;
    color: var(--sb-slate-500);
    margin-top: 4px;
    line-height: 1.4;
}

.sb-dropdown__item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    color: var(--sb-slate-700);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.sb-dropdown__item:hover {
    background: var(--sb-slate-100);
    color: var(--sb-slate-900);
}

.sb-dropdown__item i {
    font-size: 18px;
    color: var(--sb-slate-500);
    flex-shrink: 0;
}

.sb-dropdown__item:hover i {
    color: var(--sb-slate-700);
}

.sb-dropdown__item--danger {
    color: var(--sb-danger);
}

.sb-dropdown__item--danger:hover {
    background: #fef2f2;
}

.sb-dropdown__item--danger i {
    color: var(--sb-danger);
}

.sb-dropdown__divider {
    height: 1px;
    background: var(--sb-slate-200);
    margin: 8px 0;
}

.sb-topbar__profile-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--sb-slate-800);
}

.sb-topbar__profile-arrow {
    color: var(--sb-slate-400);
    transition: transform 0.2s ease;
}

.sb-dropdown.is-open .sb-topbar__profile-arrow {
    transform: rotate(180deg);
}