@media (max-width: 1180px) {
    .metrics-grid,
    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .role-grid,
    .pricing-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .three-columns {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .search-pill {
        display: none;
    }
}

@media (max-width: 980px) {
    :root {
        --sidebar-width: 286px;
    }

    .app-layout {
        display: block;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-105%);
        transition: transform .22s ease;
    }

    body.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .sidebar-backdrop {
        position: fixed;
        inset: 0;
        z-index: 45;
        display: none;
        background: rgba(12, 20, 34, .44);
    }

    body.sidebar-open .sidebar-backdrop {
        display: block;
    }

    .mobile-menu-button {
        display: inline-grid;
    }

    .student-bottom-nav {
        position: sticky;
        bottom: 0;
        z-index: 35;
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 4px;
        padding: 8px;
        background: rgba(255, 255, 255, .94);
        border-top: 1px solid var(--border);
        backdrop-filter: blur(14px);
    }

    .student-bottom-nav a {
        display: grid;
        place-items: center;
        gap: 3px;
        min-height: 48px;
        color: var(--muted);
        border-radius: var(--radius);
        font-size: .72rem;
        font-weight: 800;
    }

    .student-bottom-nav a svg {
        width: 18px;
        height: 18px;
    }

    .student-bottom-nav a.is-active {
        color: var(--primary);
        background: rgba(31, 111, 235, .10);
    }

    .topbar {
        padding: 14px 18px;
    }

    .avatar-chip span,
    .role-switcher {
        display: none;
    }

    .content-shell {
        padding: 20px;
    }

    .dashboard-hero,
    .two-columns,
    .split-band,
    .landing-hero,
    .auth-shell,
    .student-command-grid,
    .practice-layout,
    .exam-shell,
    .roadmap-layout,
    .resume-layout,
    .profile-layout,
    .messages-layout,
    .evaluation-workbench {
        grid-template-columns: 1fr;
    }

    .landing-hero {
        min-height: auto;
        padding-top: 44px;
    }

    .auth-shell {
        width: min(720px, calc(100% - 28px));
    }

    .auth-brand-panel {
        min-height: auto;
    }
}

@media (max-width: 760px) {
    body {
        font-size: 15px;
    }

    .public-nav {
        flex-wrap: wrap;
        padding: 14px 16px;
    }

    .public-nav nav {
        order: 3;
        width: 100%;
        justify-content: space-between;
        gap: 12px;
        overflow-x: auto;
        padding-top: 4px;
    }

    .public-nav .button {
        display: none;
    }

    .dashboard-hero h2,
    .landing-hero h1,
    .page-title-band h1 {
        font-size: 2rem;
    }

    .section-heading h2,
    .split-band h2 {
        font-size: 1.65rem;
    }

    .metrics-grid,
    .feature-grid,
    .role-grid,
    .pricing-grid,
    .three-columns,
    .track-choice-grid,
    .subject-card-grid,
    .chapter-card-grid,
    .case-grid,
    .test-card-grid,
    .recommendation-list,
    .badge-wall,
    .result-summary-grid {
        grid-template-columns: 1fr;
    }

    .settings-grid,
    .student-snapshot,
    .subject-stats {
        grid-template-columns: 1fr;
    }

    .portal-page-hero {
        grid-template-columns: 1fr;
    }

    .portal-hero-icon {
        width: 56px;
        height: 56px;
    }

    .opportunity-profile-card,
    .candidate-card {
        grid-template-columns: 1fr;
    }

    .match-ring {
        width: 96px;
        height: 96px;
    }

    .metric-card {
        min-height: 126px;
    }

    .panel-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .segmented-tabs {
        width: 100%;
    }

    .segmented-tabs button {
        flex: 1;
    }

    .data-table {
        min-width: 0;
    }

    .data-table thead {
        display: none;
    }

    .data-table,
    .data-table tbody,
    .data-table tr,
    .data-table td {
        display: block;
        width: 100%;
    }

    .data-table tr {
        padding: 12px;
        border: 1px solid var(--border);
        border-radius: var(--radius);
    }

    .data-table tbody {
        display: grid;
        gap: 12px;
    }

    .data-table td {
        display: flex;
        justify-content: space-between;
        gap: 18px;
        padding: 9px 0;
        border-bottom: 1px solid #edf1f7;
        text-align: right;
    }

    .data-table td:last-child {
        border-bottom: 0;
    }

    .data-table td::before {
        content: attr(data-label);
        color: var(--muted);
        font-weight: 800;
        text-align: left;
    }

    .auth-proof-grid,
    .role-choice-grid {
        grid-template-columns: 1fr;
    }

    .auth-brand-panel h1 {
        font-size: 2rem;
    }

    .hero-actions,
    .modal-actions,
    .app-footer,
    .public-footer {
        flex-direction: column;
    }

    .hero-actions .button,
    .modal-actions .button {
        width: 100%;
    }
}

@media (max-width: 540px) {
    .topbar-actions {
        gap: 6px;
    }

    .content-shell {
        padding: 14px;
    }

    .dashboard-hero,
    .panel,
    .page-title-band,
    .auth-card,
    .auth-brand-panel,
    .portal-page-hero,
    .resume-preview {
        padding: 18px;
    }

    .rank-card strong {
        font-size: 2.35rem;
    }

    .chart-wrap {
        height: 260px;
    }

    .landing-hero,
    .public-section,
    .public-page-shell {
        padding-left: 16px;
        padding-right: 16px;
    }

    .landing-hero h1 {
        font-size: 2.2rem;
    }

    .topbar-left h1 {
        font-size: 1.08rem;
    }

    .portal-page-title h2 {
        font-size: 1.55rem;
    }

    .chapter-actions {
        grid-template-columns: 1fr;
    }

    .chat-bubble {
        max-width: 100%;
    }

    .breadcrumb {
        display: none;
    }
}