/* Dashboard Page */
.dashboard-page {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.dashboard-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    align-items: flex-end;
}

.dashboard-filter-bar .filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    min-width: 220px;
    flex: 1;
}

.dashboard-filter-bar .filter-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
}

.stat-card {
    background: var(--surface);
    padding: var(--spacing-4);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
}

.stat-card:nth-child(2) {
    border-left-color: var(--secondary);
}

.stat-card:nth-child(3) {
    border-left-color: var(--success);
}

.stat-card h3 {
    color: var(--muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-2);
}

.stat-card .value {
    font-size: 1.5rem;
    font-weight: 600;
}

.dashboard-chart-toggle {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--spacing-2);
}

.chart-panel-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 90;
}

.chart-panel-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.chart-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    width: min(520px, 92vw);
    max-height: 90vh;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg, 16px);
    transform: translate(-50%, -50%) scale(0.96);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.2s ease;
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chart-panel.open {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.chart-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--border);
}

.chart-panel-body {
    padding: var(--spacing-3) var(--spacing-4);
    flex: 1;
    overflow-y: auto;
}

.chart-panel-body .dual-line-chart {
    min-height: 240px;
}

.chart-panel .btn-panel-close {
    font-size: 1.1rem;
}

.chart-shell {
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--spacing-2);
}

.chart {
    width: 100%;
    height: auto;
}

.chart text {
    font-size: 0.65rem;
    fill: var(--muted);
}

.dual-line-chart {
    width: 100%;
    position: relative;
}

.chart-scroll-wrapper {
    width: 100%;
    overflow-x: auto;
}

.chart-scroll-wrapper svg {
    width: 100%;
    min-width: 440px;
}

.chart-line-revenue {
    stroke: var(--primary);
}

.chart-line-profit {
    stroke: var(--warning);
}

.chart-dot {
    stroke: var(--surface);
    stroke-width: 1.5;
    fill: var(--primary);
    cursor: pointer;
}

.chart-dot-profit {
    fill: var(--warning);
}

.chart-y-label {
    font-size: 0.65rem;
    fill: var(--muted);
    text-anchor: start;
}

.chart-x-label {
    font-size: 0.6rem;
    fill: var(--muted);
}

.chart-inline-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-top: var(--spacing-2);
    font-size: 0.8rem;
    color: var(--muted);
}

.chart-inline-legend .legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.legend-revenue {
    background: var(--primary);
}

.legend-profit {
    background: var(--warning);
}

.chart-tooltip {
    position: absolute;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--spacing-2);
    box-shadow: var(--shadow);
    pointer-events: none;
    transform: translate(-50%, -120%);
    opacity: 0;
    transition: opacity 0.15s ease;
    font-size: 0.78rem;
    min-width: 120px;
}

.chart-tooltip.visible {
    opacity: 1;
}

.chart-tooltip .tooltip-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.chart-tooltip .tooltip-value {
    color: var(--primary);
    font-weight: 600;
}

.chart-tooltip .tooltip-label {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 2px;
}

.chart-empty {
    padding: var(--spacing-4);
    color: var(--muted);
    text-align: center;
}

.pie-wrapper {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.chart-legend {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    min-width: 180px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: 0.875rem;
    color: var(--text);
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.dashboard-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.dashboard-finance {
    display: flex;
    flex-direction: column;
}

.finance-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-3);
}

.finance-table th,
.finance-table td {
    text-align: left;
    padding: var(--spacing-2);
    border-bottom: 1px solid var(--border-light, var(--border));
}

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

.finance-trend {
    font-size: 0.85rem;
    color: var(--muted);
}

.dashboard-alerts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-4);
}

.alert-card {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.alert-card h4 {
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1rem;
}

.alert-widget {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--spacing-3);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.alert-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.95rem;
}

.alert-toggle {
    border: none;
    background: transparent;
    font-size: 0.9rem;
    cursor: pointer;
}

.alert-link {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.85rem;
    color: var(--primary);
    cursor: pointer;
}

.alert-link:hover {
    text-decoration: underline;
}

.alert-note {
    font-size: 0.75rem;
    color: var(--warning);
    margin: var(--spacing-2) 0;
}

.alert-body.collapsed {
    display: none;
}

.alert-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.alert-list li {
    border-bottom: 1px dashed var(--border-light, var(--border));
    padding-bottom: var(--spacing-2);
    font-size: 0.9rem;
}

.alert-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.alert-meta {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: var(--spacing-1);
}

.dashboard-advanced {
    display: grid;
    gap: var(--spacing-4);
}

.widget-toggle-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.widget-toggle-list label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    font-size: 0.85rem;
    cursor: pointer;
}

.widget-toggle-list input {
    accent-color: var(--primary);
}

.quickview-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.quickview-tabs button {
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    padding: var(--spacing-2) var(--spacing-3);
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.quickview-tabs button.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--primary-contrast);
    box-shadow: var(--shadow-sm);
}

.quickview-grid {
    margin-top: var(--spacing-3);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-3);
}

.quickview-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--spacing-3);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light, var(--border));
}

.quickview-card .label {
    font-size: 0.8rem;
    color: var(--muted);
}

.quickview-card .value {
    font-size: 1.4rem;
    font-weight: 600;
    margin-top: var(--spacing-1);
}

.quickview-card .hint {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: var(--spacing-1);
}

.dashboard-quickview {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.quickview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.quickview-year-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: 0.85rem;
    color: var(--muted);
}

.quickview-year-selector select {
    min-width: 110px;
}

/* Home Page */
.home-page {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.home-header {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    align-items: center;
    justify-content: space-between;
}

.home-brand {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

.home-brand .logo {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.home-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.home-nav-link {
    border: none;
    background: none;
    color: var(--muted);
    font-size: 0.9rem;
    cursor: pointer;
}

.home-nav-link.active {
    color: var(--primary);
    font-weight: 600;
}

.home-account {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
    flex-wrap: wrap;
}

.home-auth-buttons {
    display: flex;
    gap: var(--spacing-2);
}

.home-auth-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.home-icon-svg {
    width: 24px;
    height: 24px;
    color: inherit;
}

.home-brand-icon {
    color: var(--primary);
}

.home-tab-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-3);
}

.home-hero-actions {
    display: flex;
    gap: var(--spacing-2);
}

.home-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    align-items: center;
}

.home-tab {
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-full);
    padding: 0.4rem 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--muted);
}

.home-tab.active {
    background: var(--primary);
    color: var(--primary-contrast);
    border-color: var(--primary);
}

.home-search {
    margin-left: auto;
    flex: 1;
    min-width: 180px;
}

.home-search input {
    width: 100%;
}

.home-feed {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.home-feed-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.home-post-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--spacing-3);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.home-post-header {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-2);
}

.home-post-meta {
    font-size: 0.8rem;
    color: var(--muted);
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.home-post-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.home-post-indicator {
    font-size: 0.8rem;
    color: var(--muted);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.home-post-card[data-expanded="true"] .home-post-indicator {
    transform: rotate(180deg);
}

.home-post-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.home-post-card[data-expanded="true"] .home-post-body {
    max-height: 1000px;
    margin-top: var(--spacing-2);
}

.home-post-badge {
    background: var(--primary);
    color: var(--primary-contrast);
    padding: 0.1rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
}

.home-post-content {
    margin: var(--spacing-2) 0;
    line-height: 1.6;
}

.home-post-tags {
    display: flex;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--primary);
}

.home-post-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.home-post-actions {
    display: flex;
    gap: 0.25rem;
}

.home-auth-form .form-group {
    margin-bottom: var(--spacing-3);
}

.home-post-form textarea,
.home-post-form input,
.home-post-form select {
    width: 100%;
}

/* Coding Guide Page */
/* Classes Page */
.class-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.class-students {
    background: var(--bg);
    padding: var(--spacing-3);
    margin: var(--spacing-3) 0;
    border-radius: var(--radius);
}

/* Class Detail Page - Enhanced UI/UX */
.class-detail-page {
    animation: pageFadeIn 0.3s ease-out;
}

@keyframes pageFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.class-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--border);
}

.class-detail-header-content {
    flex: 1;
    min-width: 0;
}

.class-detail-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    flex-wrap: wrap;
}

.class-detail-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text);
    margin: 0;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.class-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--muted);
    line-height: 1.6;
}

.class-detail-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.class-detail-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.class-detail-status-badge.running {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0.08) 100%);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.class-detail-status-badge.inactive {
    background: linear-gradient(135deg, rgba(107, 114, 128, 0.15) 0%, rgba(107, 114, 128, 0.08) 100%);
    color: var(--muted);
    border: 1px solid rgba(107, 114, 128, 0.25);
}

.class-detail-status-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    display: inline-block;
}

.class-detail-status-badge.running::before {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.class-detail-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.class-detail-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.class-detail-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.class-detail-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, rgba(59, 130, 246, 0.5) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.class-detail-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.class-detail-card:hover::before {
    transform: scaleX(1);
}

.class-detail-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border);
}

.class-detail-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.class-detail-card-title svg {
    width: 20px;
    height: 20px;
    color: var(--primary);
    flex-shrink: 0;
}

.class-detail-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.class-detail-empty-state {
    text-align: center;
    padding: var(--spacing-6) var(--spacing-4);
    color: var(--muted);
}

.class-detail-empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-3);
    opacity: 0.5;
}

.class-detail-empty-state-icon svg {
    width: 100%;
    height: 100%;
    color: var(--muted);
}

.class-detail-schedule-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.class-detail-schedule-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.class-detail-schedule-item:hover {
    background: rgba(59, 130, 246, 0.05);
    border-color: var(--primary);
    transform: translateX(4px);
}

.class-detail-schedule-item svg {
    width: 16px;
    height: 16px;
    color: var(--primary);
    flex-shrink: 0;
}

.class-detail-section {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-4);
    overflow: hidden;
    transition: all 0.3s ease;
}

.class-detail-section:hover {
    box-shadow: var(--shadow);
}

.class-detail-section-header {
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.03) 0%, transparent 100%);
}

.class-detail-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.class-detail-section-content {
    padding: var(--spacing-5);
}

.class-detail-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.class-detail-stat-item {
    padding: var(--spacing-3);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.class-detail-stat-item:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.03);
}

.class-detail-stat-label {
    font-size: var(--font-size-xs);
    color: var(--muted);
    font-weight: 500;
    margin-bottom: var(--spacing-1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.class-detail-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text);
}

/* Session table improvements */
.sessions-table tbody tr {
    transition: all 0.2s ease;
}

.sessions-table tbody tr:hover {
    background: rgba(59, 130, 246, 0.05) !important;
    transform: translateX(2px);
}

.sessions-table tbody tr.session-row-clickable:active {
    transform: translateX(0);
    background: rgba(59, 130, 246, 0.08) !important;
}

.sessions-table tbody tr:has(.table-checkbox:checked) {
    background: rgba(59, 130, 246, 0.1) !important;
    border-left: 3px solid var(--primary);
}

.sessions-table tbody tr:has(.table-checkbox:checked):hover {
    background: rgba(59, 130, 246, 0.15) !important;
}

/* Session toolbar improvements */
.session-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.session-toolbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* Staff Detail Page - Enhanced UI/UX */
.staff-detail-page {
    animation: pageFadeIn 0.3s ease-out;
}

.staff-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--border);
}

.staff-detail-header-content {
    flex: 1;
    min-width: 0;
}

.staff-detail-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    flex-wrap: wrap;
}

.staff-detail-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text);
    margin: 0;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.staff-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--muted);
    line-height: 1.6;
}

.staff-detail-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.staff-detail-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.staff-detail-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.staff-detail-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.staff-detail-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, rgba(59, 130, 246, 0.5) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.staff-detail-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.staff-detail-card:hover::before {
    transform: scaleX(1);
}

.staff-detail-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border);
}

.staff-detail-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.staff-detail-card-title svg {
    width: 20px;
    height: 20px;
    color: var(--primary);
    flex-shrink: 0;
}

.staff-detail-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: 0;
}

.staff-detail-info-item {
    padding: var(--spacing-3);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.staff-detail-specialization-section {
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border);
}

.staff-detail-specialization-section .staff-detail-info-label {
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.staff-detail-specialization-section .staff-detail-info-value {
    padding: var(--spacing-3);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    min-height: 60px;
    transition: all 0.2s ease;
}

.staff-detail-info-item:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.03);
    transform: translateY(-2px);
}

.staff-detail-info-label {
    font-size: var(--font-size-xs);
    color: var(--muted);
    font-weight: 500;
    margin-bottom: var(--spacing-1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.staff-detail-info-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text);
}

.staff-detail-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.staff-detail-stat-item {
    padding: var(--spacing-3);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.staff-detail-stat-item:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.03);
}

.staff-detail-stat-label {
    font-size: var(--font-size-xs);
    color: var(--muted);
    font-weight: 500;
    margin-bottom: var(--spacing-1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.staff-detail-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text);
}

.staff-detail-section {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-4);
    overflow: hidden;
    transition: all 0.3s ease;
}

.staff-detail-section:hover {
    box-shadow: var(--shadow);
}

.staff-detail-section-header {
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.03) 0%, transparent 100%);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.staff-detail-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.staff-detail-section-content {
    padding: var(--spacing-5);
}

.staff-detail-empty-state {
    text-align: center;
    padding: var(--spacing-6) var(--spacing-4);
    color: var(--muted);
}

.staff-detail-empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-3);
    opacity: 0.5;
}

.staff-detail-empty-state-icon svg {
    width: 100%;
    height: 100%;
    color: var(--muted);
}

/* Staff Detail Two Column Layout */
.staff-detail-two-column-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.staff-detail-left-column,
.staff-detail-right-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

/* Month Selector Styles */
.staff-month-selector {
    position: relative;
}

.btn-icon-month-nav:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-month-display:hover {
    background: var(--surface);
    border-color: var(--primary);
    color: var(--primary);
}

.month-picker-dropdown {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-month-option:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.btn-month-option.selected {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Responsive: Stack columns on mobile */
@media (max-width: 768px) {
    .staff-detail-two-column-layout {
        grid-template-columns: 1fr;
    }
    
    .staff-detail-section-content {
        max-height: none !important;
    }
}

/* Role badges */
.role-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    background: linear-gradient(135deg, var(--primary) 0%, rgba(59, 130, 246, 0.8) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-right: var(--spacing-1);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    transition: all 0.2s ease;
}

.role-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* Responsive improvements for class detail */
@media (max-width: 1024px) {
    .class-detail-cards-grid,
    .staff-detail-cards-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .class-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-3);
        padding-bottom: var(--spacing-3);
    }
    
    .class-detail-header-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .class-detail-title-row {
        flex-wrap: wrap;
    }
    
    .class-detail-cards-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }
    
    .class-detail-card {
        padding: var(--spacing-4);
    }
    
    .class-detail-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }
    
    .class-detail-title {
        font-size: var(--font-size-xl);
    }
    
    .class-detail-meta {
        font-size: var(--font-size-xs);
        gap: var(--spacing-2);
        flex-direction: column;
        align-items: flex-start;
    }
    
    .class-detail-section-content {
        padding: var(--spacing-3);
    }
    
    .class-detail-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .session-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .session-toolbar-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .sessions-table {
        font-size: var(--font-size-xs);
    }
    
    .sessions-table th,
    .sessions-table td {
        padding: var(--spacing-2) var(--spacing-3);
    }
    
    .sessions-table .session-meta-cell {
        padding: var(--spacing-2) var(--spacing-3) !important;
    }
    
    .session-notes-cell {
        max-width: 150px;
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Staff detail responsive */
    .staff-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-3);
        padding-bottom: var(--spacing-3);
    }
    
    .staff-detail-header-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .staff-detail-title-row {
        flex-wrap: wrap;
    }
    
    .staff-detail-cards-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }
    
    .staff-detail-card {
        padding: var(--spacing-4);
    }
    
    .staff-detail-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }
    
    .staff-detail-title {
        font-size: var(--font-size-xl);
    }
    
    .staff-detail-meta {
        font-size: var(--font-size-xs);
        gap: var(--spacing-2);
        flex-direction: column;
        align-items: flex-start;
    }
    
    .staff-detail-section-content {
        padding: var(--spacing-3);
    }
    
    .staff-detail-stats-grid,
    .staff-detail-info-grid {
        grid-template-columns: 1fr;
    }
}

/* Students Page */
.student-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--surface);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-3);
}

/* Teachers Page */
.teacher-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

/* Payments Page */
.payment-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.payment-summary {
    background: var(--surface);
    padding: var(--spacing-4);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-4);
}

/* Schedule Page */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.schedule-day {
    background: var(--surface);
    padding: var(--spacing-3);
    border-radius: var(--radius);
    min-height: 120px;
}

.schedule-item {
    padding: var(--spacing-2);
    margin-bottom: var(--spacing-2);
    border-radius: var(--radius-sm);
    background: var(--bg);
}

/* Reports Page */
.report-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.chart-container {
    background: var(--surface);
    padding: var(--spacing-4);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-4);
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .dashboard-stats,
    .teacher-stats {
        grid-template-columns: 1fr;
    }

    .schedule-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .student-card {
        grid-template-columns: 1fr;
    }

.transaction-history .transaction-table {
    max-height: 320px;
    overflow-y: auto;
}

.transaction-history table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.transaction-history th,
.transaction-history td {
    text-align: left;
    padding: 0.4rem 0.6rem;
    border-bottom: 1px solid var(--border);
}

.transaction-history tbody tr:last-child td {
    border-bottom: none;
}
}

/* Lesson Plans Tabs - Modern Premium UI */
.lesson-plans-tabs {
    position: relative;
    display: flex;
    gap: var(--spacing-1, 0.25rem);
    padding: var(--spacing-2, 0.5rem);
    margin-bottom: var(--spacing-5, 1.25rem);
    background: var(--bg, #f8fafc);
    border-radius: var(--radius-lg, 0.75rem);
    border: 1px solid var(--border, #e2e8f0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.lesson-plan-tab {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2, 0.5rem);
    padding: var(--spacing-3, 0.75rem) var(--spacing-4, 1rem);
    border: none;
    background: transparent;
    color: var(--muted, #64748b);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
    z-index: 1;
    border-radius: var(--radius, 0.5rem);
    overflow: hidden;
}

.lesson-plan-tab::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0.04) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.lesson-plan-tab:hover {
    color: var(--primary, #3b82f6);
    background: rgba(59, 130, 246, 0.06);
    transform: translateY(-1px);
}

.lesson-plan-tab:hover::before {
    opacity: 1;
}

.lesson-plan-tab.active {
    color: var(--primary, #3b82f6);
    font-weight: 600;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12) 0%, rgba(59, 130, 246, 0.08) 100%);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.lesson-plan-tab.active::before {
    opacity: 1;
}

.lesson-plan-tab-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.lesson-plan-tab-icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 2.5;
    transition: all 0.3s ease;
}

.lesson-plan-tab:hover .lesson-plan-tab-icon {
    transform: scale(1.1) rotate(2deg);
    color: var(--primary, #3b82f6);
}

.lesson-plan-tab.active .lesson-plan-tab-icon {
    color: var(--primary, #3b82f6);
    transform: scale(1.15);
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.3));
}

.lesson-plan-tab.active .lesson-plan-tab-icon svg {
    stroke-width: 2.8;
}

.lesson-plan-tab-text {
    font-size: var(--font-size-sm, 0.875rem);
    white-space: nowrap;
    letter-spacing: 0.01em;
    transition: all 0.3s ease;
}

.lesson-plan-tab.active .lesson-plan-tab-text {
    letter-spacing: 0.02em;
}

.lesson-plan-tab-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 33.33%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary, #3b82f6) 0%, rgba(59, 130, 246, 0.8) 100%);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1), width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    border-radius: 3px 3px 0 0;
    box-shadow: 0 -2px 8px rgba(59, 130, 246, 0.4);
}

/* Dark theme adjustments */
[data-theme="dark"] .lesson-plans-tabs {
    background: rgba(30, 41, 59, 0.5);
    border-color: rgba(148, 163, 184, 0.1);
}

[data-theme="dark"] .lesson-plan-tab:hover {
    background: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .lesson-plan-tab.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(59, 130, 246, 0.15) 100%);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Responsive for lesson plans tabs */
@media (max-width: 768px) {
    .lesson-plans-tabs {
        padding: var(--spacing-1, 0.25rem);
        gap: var(--spacing-1, 0.25rem);
    }
    
    .lesson-plan-tab {
        padding: var(--spacing-2, 0.5rem) var(--spacing-2, 0.5rem);
        font-size: var(--font-size-xs, 0.75rem);
        gap: var(--spacing-1, 0.25rem);
    }
    
    .lesson-plan-tab-icon {
        width: 18px;
        height: 18px;
    }
    
    .lesson-plan-tab-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .lesson-plan-tab-text {
        font-size: var(--font-size-xs, 0.75rem);
    }
}

@media (max-width: 480px) {
    .lesson-plan-tab {
        flex-direction: column;
        padding: var(--spacing-2, 0.5rem) var(--spacing-1, 0.25rem);
    }
    
    .lesson-plan-tab-text {
        font-size: 0.7rem;
    }
}

/* Exercises Tab Styles */
.exercises-container {
    display: flex;
    gap: var(--spacing-4);
}

.exercises-sidebar {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: var(--spacing-4);
    overflow-y: auto;
}

.topic-item {
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-1);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: var(--font-size-sm);
    border: 1px solid transparent;
}

.topic-item:hover {
    background: var(--bg);
    border-color: var(--border);
    transform: translateX(2px);
}

.topic-item.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12) 0%, rgba(59, 130, 246, 0.08) 100%);
    color: var(--primary);
    font-weight: 600;
    border-color: rgba(59, 130, 246, 0.2);
}

.custom-topic:hover .topic-actions {
    opacity: 1 !important;
}

.exercises-table {
    width: 100%;
}

.exercise-row {
    transition: all 0.2s ease;
}

.exercise-row:hover {
    background: var(--bg) !important;
    transform: translateX(2px);
}

.exercise-row.dragging {
    opacity: 0.6;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    cursor: grabbing !important;
}

.exercise-row.draggable-row {
    cursor: grab;
    user-select: none;
}

.exercise-row.draggable-row:active {
    cursor: grabbing;
}

/* Overview Tab Styles */
.overview-tab-content {
    padding: var(--spacing-2);
}

.overview-section-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: var(--spacing-5);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.overview-section-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

[data-theme="dark"] .overview-section-card {
    background: var(--surface-dark);
    border-color: var(--border-dark);
}

.overview-section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--border);
}

.overview-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex: 1;
}

.overview-section-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.overview-section-card:hover .overview-section-icon {
    transform: scale(1.05);
}

.overview-table {
    width: 100%;
    border-collapse: collapse;
}

.overview-table thead th {
    text-align: left;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
    background: var(--bg);
}

.overview-table tbody td {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.overview-table-row {
    transition: all 0.2s ease;
    cursor: pointer;
}

.overview-table-row:hover {
    background: var(--bg) !important;
    transform: translateX(2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.overview-table-row:nth-child(even) {
    background: var(--bg);
}

.overview-table-row:nth-child(even):hover {
    background: var(--bg) !important;
}

.overview-empty-state {
    padding: 0 !important;
}

.overview-empty-state div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

/* Responsive for overview tab */
@media (max-width: 768px) {
    .overview-section-card {
        padding: var(--spacing-3);
    }
    
    .overview-section-header {
        flex-direction: column;
        gap: var(--spacing-3);
        align-items: flex-start;
    }
    
    .overview-section-icon {
        width: 40px;
        height: 40px;
    }
    
    .overview-section-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .overview-table thead th,
    .overview-table tbody td {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 768px) {
    .exercises-container {
        flex-direction: column;
        height: auto;
    }
    
    .exercises-sidebar {
        width: 100% !important;
        max-height: 300px;
    }
}

/* Landing page */
body.home-landing-mode {
    background: var(--surface);
}

body[data-theme="dark"].home-landing-mode {
    background: #0f172a;
}

body.home-landing-mode .layout {
    display: block;
    background: transparent;
}

body.home-landing-mode .layout > main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-5) var(--spacing-4) var(--spacing-8);
    background: transparent;
}

/* Đảm bảo modal backdrop luôn hiển thị đúng background khi ở landing mode */
body.home-landing-mode .modal-backdrop {
    background: rgba(0,0,0,0.6) !important;
    z-index: 10000 !important;
    backdrop-filter: blur(4px);
}

/* Ẩn hoàn toàn sidebar và layout admin khi modal mở ở landing mode */
body.home-landing-mode .modal-backdrop ~ * .sidebar,
body.home-landing-mode .modal-backdrop ~ * aside,
body.home-landing-mode .modal-backdrop ~ * .layout:not(.layout-landing) {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
}

body.home-landing-mode .layout > aside,
body.home-landing-mode .sidebar,
body.home-landing-mode .top-nav,
body.home-landing-mode #sidebar {
    display: none !important;
}

.home-landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    color: var(--text);
}

.home-landing-header {
    position: sticky;
    top: 16px;
    z-index: 100;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-5);
    background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(247,248,255,0.95) 100%);
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-3xl);
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(15, 23, 42, 0.04);
    backdrop-filter: blur(20px) saturate(180%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: var(--spacing-2);
}

/* Header khi scroll - tăng shadow và giảm padding */
.home-landing-header.scrolled {
    top: 8px;
    padding: var(--spacing-2) var(--spacing-4);
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(15, 23, 42, 0.06);
    background: linear-gradient(180deg, rgba(255,255,255,0.99) 0%, rgba(247,248,255,0.97) 100%);
}

.home-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.home-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
    transition: transform 0.2s ease;
    padding: var(--spacing-1);
    border-radius: var(--radius-lg);
}

.home-logo:hover {
    transform: scale(1.05);
}

.home-logo svg {
    transition: transform 0.3s ease, filter 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.2));
}

.home-logo:hover svg {
    transform: rotate(15deg) scale(1.1);
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.4));
}

.home-brand-name {
    font-weight: 700;
    font-size: 1rem;
}

.home-brand-tagline {
    font-size: 0.75rem;
    color: var(--muted);
}

.home-primary-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.home-nav-link {
    border: none;
    background: transparent;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--muted);
    cursor: pointer;
    padding: var(--spacing-2) var(--spacing-3);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: var(--radius-lg);
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

/* Hover background effect */
.home-nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(59, 130, 246, 0.08);
    border-radius: var(--radius-lg);
    transform: scale(0);
    transform-origin: center;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

/* Active underline */
.home-nav-link::after {
    content: '';
    position: absolute;
    left: 50%;
    right: 50%;
    bottom: 4px;
    height: 2.5px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(59,130,246,0.8), rgba(99,102,241,0.8));
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
    width: 60%;
}

.home-nav-link:hover,
.home-nav-link:focus {
    color: var(--primary);
    transform: translateY(-1px);
}

.home-nav-link:hover::before {
    transform: scale(1);
}

.home-nav-link:hover::after,
.home-nav-link:focus::after {
    transform: translateX(-50%) scaleX(1);
    width: 80%;
}

.home-nav-link.active {
    color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

.home-nav-link.active::before {
    transform: scale(1);
    background: rgba(59, 130, 246, 0.12);
}

.home-nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
    width: 70%;
    height: 3px;
    background: linear-gradient(90deg, rgba(59,130,246,1), rgba(99,102,241,1));
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
}

.home-auth-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.home-auth-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.home-auth-actions .btn-ghost {
    border: 1.5px solid rgba(15, 23, 42, 0.1);
    background: transparent;
    color: var(--text);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.home-auth-actions .btn-ghost::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(59, 130, 246, 0.08);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.home-auth-actions .btn-ghost:hover {
    color: var(--primary);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-1px);
}

.home-auth-actions .btn-ghost:hover::before {
    transform: scaleX(1);
}

.home-auth-actions .btn-primary,
.top-nav-guest-actions .btn-primary {
    border: none;
    padding: var(--spacing-2) var(--spacing-5);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35), 0 2px 8px rgba(59, 130, 246, 0.2);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.home-auth-actions .btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.home-auth-actions .btn-primary:hover,
.top-nav-guest-actions .btn-primary:hover {
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.45), 0 4px 12px rgba(59, 130, 246, 0.3);
    transform: translateY(-2px) scale(1.02);
}

.home-auth-actions .btn-primary:hover::before {
    opacity: 1;
}

.home-auth-actions .btn-primary span,
.top-nav-guest-actions .btn-primary span {
    position: relative;
    z-index: 1;
}

.home-user-chip {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.08);
}

.home-user-chip .chip-name {
    font-weight: 600;
}

.chip-role {
    font-size: 0.75rem;
    color: var(--muted);
}

.home-hero {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
    padding: var(--spacing-6) 0 var(--spacing-4);
}

.home-hero-content h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    margin: var(--spacing-3) 0 var(--spacing-2);
}

.home-hero-subtext {
    font-size: 1.1rem;
    color: var(--muted);
    margin-bottom: var(--spacing-4);
}

.home-hero-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.home-hero-kpis {
    margin-top: var(--spacing-5);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-3);
}

.hero-kpi-card {
    background: rgba(59, 130, 246, 0.07);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.hero-kpi-card p {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 0.35rem;
}

.hero-kpi-card strong {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--text);
}

.home-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    background: rgba(59, 130, 246, 0.12);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.85rem;
}

.home-hero-illustration {
    position: relative;
    background: linear-gradient(135deg, rgba(59,130,246,0.16), rgba(99,102,241,0.12));
    border-radius: 32px;
    padding: var(--spacing-6);
    overflow: hidden;
    min-height: 320px;
}

.hero-badge,
.hero-card {
    position: absolute;
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

.hero-badge {
    top: 24px;
    right: 24px;
}

.hero-card--primary {
    bottom: 40px;
    left: 30px;
}

.hero-card--secondary {
    bottom: 100px;
    right: 40px;
}

.home-insights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.home-insight-card {
    padding: var(--spacing-4);
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: linear-gradient(180deg, rgba(248, 250, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

.insight-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.insight-value {
    font-size: 2.4rem;
    font-weight: 700;
    margin: var(--spacing-2) 0;
}

.insight-meta {
    font-size: 0.85rem;
    color: var(--muted);
}

.insight-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin: var(--spacing-3) 0 var(--spacing-2);
}

.insight-chips span {
    padding: 0.35rem 0.8rem;
    border-radius: var(--radius-full);
    background: rgba(59, 130, 246, 0.12);
    color: var(--primary);
    font-size: 0.8rem;
}

.home-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-4);
    margin: var(--spacing-2) 0 var(--spacing-6);
}

.home-feature-card {
    padding: var(--spacing-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    background: var(--surface);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.home-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
}

.home-workflow {
    margin-top: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.workflow-header h2 {
    margin: var(--spacing-2) 0;
}

.workflow-tagline {
    color: var(--muted);
    max-width: 640px;
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-4);
}

.workflow-card {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-4);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.workflow-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(59, 130, 246, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.workflow-card h3 {
    margin: var(--spacing-1) 0;
}

.home-preview {
    margin-top: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-4);
}

.preview-card {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-4);
    background: linear-gradient(180deg, rgba(248, 250, 255, 1) 0%, rgba(255, 255, 255, 0.95) 100%);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.preview-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.preview-card h3 {
    font-size: 1.8rem;
    margin: 0;
}

.preview-card h3 span {
    font-size: 0.9rem;
    color: var(--muted);
    font-weight: 400;
    margin-left: 0.3rem;
}

.preview-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: var(--muted);
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.status-pill {
    padding: 0.2rem 0.75rem;
    border-radius: 999px;
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
    font-weight: 600;
    font-size: 0.75rem;
}

.home-teams-section {
    margin: var(--spacing-2) 0 var(--spacing-6);
    padding: var(--spacing-5);
    border-radius: var(--radius-3xl);
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(241,245,255,0.95));
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
}

.teams-header {
    text-align: center;
    margin-bottom: var(--spacing-5);
}

.teams-header h2 {
    margin: var(--spacing-2) 0;
    font-size: 2rem;
}

.teams-tagline {
    color: var(--muted);
    font-size: 1rem;
}

.home-teams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-4);
}

.home-team-card {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-4);
    border: 1px solid var(--border);
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.home-team-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 45px rgba(15, 23, 42, 0.12);
    border-color: rgba(59, 130, 246, 0.4);
}

.team-icon {
    font-size: 2rem;
}

.home-team-card p {
    color: var(--muted);
    flex: 1;
}

.home-team-card .btn {
    align-self: flex-start;
    border-radius: var(--radius-full);
}

.home-teams-contact {
    margin-top: var(--spacing-5);
    padding: var(--spacing-4);
    border-radius: var(--radius-xl);
    border: 1px dashed rgba(59,130,246,0.4);
    background: rgba(59,130,246,0.08);
}

.contact-inline {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
    font-weight: 600;
    color: var(--text);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(59, 130, 246, 0.12);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.feature-link {
    margin-top: auto;
    border: none;
    background: none;
    color: var(--primary);
    font-weight: 600;
    text-align: left;
    padding: 0;
    cursor: pointer;
}

.home-section {
    padding: var(--spacing-6) 0;
    border-bottom: 1px solid var(--border-subtle);
}

.section-eyebrow {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: var(--spacing-2);
}

.section-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.home-section-description p {
    margin-bottom: var(--spacing-2);
    color: var(--muted);
    line-height: 1.7;
}

.home-edit-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--border);
    background: transparent;
    padding: 6px 12px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--muted);
}

.home-edit-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.home-footer {
    padding: var(--spacing-8) 0;
}

.home-footer-card {
    border-radius: var(--radius-3xl);
    background: linear-gradient(135deg, rgba(238,242,255,0.9), rgba(237,233,254,0.9));
    border: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
    padding: var(--spacing-6);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.home-footer-lede {
    color: var(--muted);
    margin: var(--spacing-2) 0 var(--spacing-4);
}

.home-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: var(--spacing-3);
}

.contact-item {
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
    padding: var(--spacing-3);
    border-radius: var(--radius-xl);
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: rgba(59, 130, 246, 0.12);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.home-footer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.home-footer-actions .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: var(--radius-full);
}

.home-footer-right {
    background: rgba(15, 23, 42, 0.04);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-5);
    border: 1px dashed rgba(59, 130, 246, 0.25);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.home-footer-right h3 {
    margin: 0;
}

.home-footer-socials {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.home-social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2);
    border-radius: var(--radius-lg);
    transition: background 0.2s ease;
    color: var(--text);
    font-weight: 600;
}

.home-social-link:hover {
    background: rgba(255, 255, 255, 0.8);
}

.home-social-icon {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: rgba(255,255,255,0.9);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
}

.home-footer-note {
    font-size: 0.85rem;
    color: var(--muted);
}

@media (max-width: 1024px) {
    .home-landing-header {
        grid-template-columns: 1fr;
        text-align: center;
        top: 8px;
        padding: var(--spacing-3) var(--spacing-4);
        gap: var(--spacing-3);
    }

    .home-landing-header.scrolled {
        top: 4px;
        padding: var(--spacing-2) var(--spacing-3);
    }

    .home-brand {
        justify-content: center;
    }

    .home-primary-nav {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-2);
    }

    .home-nav-link {
        padding: var(--spacing-1.5) var(--spacing-2.5);
        font-size: 0.875rem;
    }

    .home-auth-actions {
        justify-content: center;
        width: 100%;
        flex-wrap: wrap;
    }

    .home-auth-actions .btn-ghost,
    .home-auth-actions .btn-primary {
        flex: 1;
        min-width: 120px;
    }
}

@media (max-width: 640px) {
    .home-hero {
        grid-template-columns: 1fr;
    }

    .home-hero-illustration {
        min-height: 260px;
    }

    .home-landing-header {
        position: static;
        border-bottom: none;
    }

    .home-teams-section {
        padding: var(--spacing-4);
    }

    .contact-inline {
        flex-direction: column;
        gap: var(--spacing-2);
    }
}

/* Students Page Styles */
.students-page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
    gap: var(--spacing-4);
}

.students-page-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex: 1;
}

.students-count-badge {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-1);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.students-count-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.students-count-label {
    font-size: 0.875rem;
    color: var(--muted);
    font-weight: 500;
}

.students-filters-card {
    margin-bottom: var(--spacing-4);
}

.students-search-bar {
    margin-bottom: var(--spacing-4);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: var(--spacing-3);
    color: var(--muted);
    pointer-events: none;
    z-index: 1;
}

.search-input {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3) var(--spacing-2) calc(var(--spacing-3) * 2 + 18px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--font-size-base);
    background: var(--bg);
    color: var(--text);
    transition: all 0.2s ease;
}

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

.search-input::placeholder {
    color: var(--muted);
}

.search-clear-btn {
    position: absolute;
    right: var(--spacing-2);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    z-index: 1;
}

.search-clear-btn:hover {
    background: var(--bg-secondary);
    color: var(--text);
}

.students-filters-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    min-width: 180px;
    flex: 1;
}

.filter-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: var(--spacing-1);
}

.filter-select {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: var(--font-size-base);
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-select:hover {
    border-color: var(--primary);
}

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

.filter-actions {
    display: flex;
    gap: var(--spacing-2);
    align-items: flex-end;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-badge.status-active {
    background: rgba(34, 197, 94, 0.1);
    color: rgb(22, 163, 74);
}

.status-badge.status-inactive {
    background: rgba(239, 68, 68, 0.1);
    color: rgb(220, 38, 38);
}

.status-badge svg {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .students-page-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .students-page-title-row {
        justify-content: space-between;
    }
    
    .students-filters-row {
        flex-direction: column;
    }
    
    .filter-group {
        min-width: 100%;
    }
    
    .filter-actions {
        width: 100%;
    }
    
    .filter-actions .btn {
        flex: 1;
    }
}