/* ============================================================
   CloudVault — Responsive CSS
   Breakpoints: Tablet (768-1024px), Mobile (<768px)
   ============================================================ */

/* ==================== TABLET (768px - 1024px) ==================== */

@media (max-width: 1024px) {
    .sidebar {
        width: var(--sidebar-collapsed);
    }

    .sidebar-link span,
    .sidebar-section-title,
    .sidebar-logo span,
    .sidebar-link-count,
    .sidebar-storage-label span:last-child,
    .sidebar-storage-accounts,
    .sidebar-storage-title {
        display: none;
    }

    .sidebar-header {
        justify-content: center;
        padding: var(--space-md);
    }

    .sidebar-link {
        justify-content: center;
        padding: 10px;
    }

    .sidebar-link-icon {
        width: auto;
    }

    .sidebar-actions .btn span {
        display: none;
    }

    .sidebar-actions .btn {
        justify-content: center;
        padding: 10px;
    }

    .topbar {
        left: var(--sidebar-collapsed);
    }

    .main-content {
        margin-left: var(--sidebar-collapsed);
    }

    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-nav-links {
        display: none;
    }
}

/* ==================== MOBILE (<768px) ==================== */

@media (max-width: 768px) {
    :root {
        --topbar-height: 56px;
    }

    /* Hide sidebar completely on mobile */
    .sidebar {
        width: var(--sidebar-width);
        transform: translateX(-100%);
        z-index: var(--z-modal);
    }

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

    .sidebar-link span,
    .sidebar-section-title,
    .sidebar-logo span,
    .sidebar-link-count,
    .sidebar-storage-label span:last-child,
    .sidebar-storage-accounts,
    .sidebar-storage-title {
        display: block;
    }

    .sidebar-header {
        justify-content: flex-start;
        padding: var(--space-lg);
    }

    .sidebar-link {
        justify-content: flex-start;
        padding: 9px 12px;
    }

    .sidebar-actions .btn span {
        display: inline;
    }

    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: var(--bg-overlay);
        z-index: calc(var(--z-modal) - 1);
        display: none;
    }

    .sidebar.open~.sidebar-overlay {
        display: block;
    }

    .topbar {
        left: 0;
    }

    .main-content {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: flex;
    }

    .topbar-user-name {
        display: none;
    }

    .topbar-storage {
        display: none;
    }

    /* Mesh background on mobile: reduced opacity for legibility */
    .mesh-background::before {
        opacity: 0.35;
        filter: blur(60px);
    }

    .stat-card {
        padding: var(--space-md);
    }

    /* Responsive grids */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    .file-list-item {
        grid-template-columns: auto 1fr auto;
    }

    .file-list-item>*:nth-child(3),
    .file-list-item>*:nth-child(4),
    .file-list-item>*:nth-child(5) {
        display: none;
    }

    /* Modal full-screen on mobile */
    .modal {
        width: 100%;
        max-width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
        top: 0;
        left: 0;
        transform: translateY(100%) scale(1);
    }

    .modal.active {
        transform: translateY(0) scale(1);
    }

    /* Landing page adjustments */
    .section {
        padding: var(--space-2xl) var(--space-md);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .section-subtitle {
        font-size: var(--font-size-base);
    }

    /* Hero text padding & fluid typography handles this better without overrides */
    .hero-title {
        margin-bottom: var(--space-md);
    }

    .hero-subtitle {
        margin-bottom: var(--space-xl);
    }

    /* Feature grid on mobile: 2 columns */
    .features-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Comparison table scrollable */
    .comparison-wrapper {
        overflow-x: auto;
    }

    /* Toast narrower on mobile */
    .toast {
        min-width: auto;
        max-width: calc(100vw - 32px);
    }

    .toast-container {
        left: var(--space-md);
        right: var(--space-md);
        top: var(--space-md);
    }

    /* Page navigation */
    .page-nav {
        padding: var(--space-md);
    }

    .page-nav-links {
        display: none;
    }

    /* Admin panel tabs instead of sidebar */
    .admin-sidebar {
        width: 100%;
        height: auto;
        position: relative;
        flex-direction: row;
        overflow-x: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .admin-layout {
        flex-direction: column !important;
    }
}

/* ==================== VERY SMALL SCREENS (<480px) ==================== */

@media (max-width: 480px) {
    .stats-row {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr !important;
    }

    .file-grid {
        grid-template-columns: 1fr;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-spacer {
        display: none;
    }

    .btn-xl {
        padding: 14px 24px;
        font-size: var(--font-size-base);
    }
}

/* ==================== LARGE SCREENS (>1400px) ==================== */

@media (min-width: 1400px) {
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

/* ==================== PRINT ==================== */

@media print {

    .sidebar,
    .topbar,
    .sidebar-toggle,
    .ad-zone,
    .toast-container {
        display: none !important;
    }

    .main-content {
        margin: 0;
    }

    body {
        background: #fff;
        color: #000;
    }
}