:root{--color-bg-main: #F5F7FF;--color-bg-section: #EBF0FE;--color-bg-card: #FFFFFF;--color-navbar: #2E5AF5;--color-hover: #1A3CC0;--color-accent: #FFB703;--color-accent-hover: #e6a503;--color-text: #0D1B4B;--color-text-muted: #6478A8;--color-border: #D4DCF5;--color-success: #22c55e;--color-warning: #f59e0b;--color-danger: #ef4444;--sidebar-width: 260px;--bottom-nav-height: 72px;--header-height: 64px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(13, 27, 75, .08);--shadow-md: 0 4px 16px rgba(13, 27, 75, .1);--shadow-lg: 0 8px 32px rgba(13, 27, 75, .12);--font-family: "Inter", system-ui, -apple-system, sans-serif;--transition: .2s 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var(--color-border)}.data-table th{background:var(--color-bg-section);font-size:.8125rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.03em}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:#2e5af508}.tutor-detail-header{display:flex;align-items:center;gap:1.5rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid 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1.25rem}.material-type-selector{grid-template-columns:repeat(2,1fr)}.notifications-dropdown{position:fixed;top:auto;bottom:calc(var(--bottom-nav-height) + 8px);left:1rem;right:1rem;width:auto}.search-hero{padding:1.25rem}.search-hero__input-wrap{flex-direction:column}.data-table{display:block;overflow-x:auto}.dashboard-chart__visual{height:140px}}@media(max-width:480px){.grid--2,.grid--3,.grid--4{grid-template-columns:1fr}.material-detail__actions{flex-direction:column}.tabs{overflow-x:auto;flex-wrap:nowrap}.tab{white-space:nowrap;padding:.625rem 1rem;font-size:.875rem}}