/* ============================================================
   DocShare — app.css
   Design: Industrial-minimal with sharp geometry
   Fonts: Syne (display) + DM Sans (body)
   ============================================================ */

/* ---- CSS Custom Properties ---- */
:root {
    --c-bg:          #0d0f14;
    --c-surface:     #13161d;
    --c-surface-2:   #1a1e28;
    --c-surface-3:   #212636;
    --c-border:      #2a3044;
    --c-border-light:#353e55;

    --c-text:        #e8eaf0;
    --c-text-muted:  #8892a4;
    --c-text-faint:  #505a6e;

    --c-accent:      #4f8ef7;
    --c-accent-dim:  rgba(79,142,247,.15);
    --c-accent-glow: rgba(79,142,247,.35);

    --c-success:     #2dd67b;
    --c-success-dim: rgba(45,214,123,.12);
    --c-warning:     #f5a623;
    --c-warning-dim: rgba(245,166,35,.12);
    --c-danger:      #f74f4f;
    --c-danger-dim:  rgba(247,79,79,.12);

    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-xl:  18px;

    --shadow-sm:  0 2px 8px rgba(0,0,0,.35);
    --shadow-md:  0 6px 24px rgba(0,0,0,.45);
    --shadow-lg:  0 12px 48px rgba(0,0,0,.55);
    --shadow-accent: 0 0 24px var(--c-accent-glow);

    --font-display: 'Syne', sans-serif;
    --font-body:    'DM Sans', sans-serif;

    --header-h: 64px;
    --container-max: 1200px;
    --sidebar-w: 240px;

    --transition: 160ms cubic-bezier(.4,0,.2,1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--c-bg);
    color: var(--c-text);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; }
button { cursor: pointer; font: inherit; border: none; background: none; }
input, select, textarea {
    font: inherit;
    color: var(--c-text);
}
ul { list-style: none; }

/* ---- Typography ---- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); }
h2 { font-size: clamp(1.3rem, 3vw, 1.6rem); }
h3 { font-size: 1.1rem; }
h4 { font-size: 0.95rem; }
p { color: var(--c-text-muted); }

/* ---- Layout ---- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- Header ---- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    height: var(--header-h);
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--c-text);
    text-decoration: none;
    flex-shrink: 0;
}
.brand:hover { text-decoration: none; }
.brand-icon {
    font-size: 1.4rem;
    color: var(--c-accent);
    line-height: 1;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    color: var(--c-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition), background var(--transition);
    text-decoration: none;
}
.nav-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.nav-link:hover { color: var(--c-text); background: var(--c-surface-2); text-decoration: none; }
.nav-link.active { color: var(--c-accent); background: var(--c-accent-dim); }
.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }

/* User menu */
.user-menu { position: relative; }
.user-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px 6px 6px;
    border-radius: var(--radius-xl);
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    transition: border-color var(--transition);
}
.user-btn:hover { border-color: var(--c-accent); }
.user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--c-accent);
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.user-name-label { font-size: 0.85rem; font-weight: 500; color:#fff;}
.chevron { width: 14px; height: 14px; transition: transform var(--transition); }
.user-btn[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: none;
    z-index: 200;
}
.user-dropdown.open { display: block; animation: dropIn 150ms ease; }
@keyframes dropIn { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.dropdown-header {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 14px 16px 10px;
    border-bottom: 1px solid var(--c-border);
}
.dropdown-header strong { font-size: 0.9rem; }
.role-tag {
    font-size: 0.7rem;
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--c-accent);
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: var(--c-text-muted);
    font-size: 0.875rem;
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}
.dropdown-item svg { width: 15px; height: 15px; }
.dropdown-item:hover { background: var(--c-surface-3); color: var(--c-text); text-decoration: none; }
.logout-item:hover { color: var(--c-danger); }

/* Mobile toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: var(--radius-sm);
}
.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--c-text-muted);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.mobile-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Main & Footer ---- */
.site-main { flex: 1; padding: 32px 0 48px; }
.site-footer {
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    padding: 16px 20px;
}
.footer-inner {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: var(--container-max);
    margin: 0 auto;
    font-size: 0.8rem;
    color: var(--c-text-faint);
}
.footer-sep { color: var(--c-border); }
.footer-inner a { color: var(--c-text-faint); }
.footer-inner a:hover { color: var(--c-accent); }

/* ---- Page Header ---- */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}
.page-header-left h1 { margin-bottom: 4px; }
.page-header-left p { color: var(--c-text-muted); font-size: 0.9rem; }
.page-header-actions { display: flex; gap: 10px; flex-shrink: 0; flex-wrap: wrap; }

/* ---- Cards ---- */
.card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    border-bottom: 1px solid var(--c-border);
    gap: 12px;
}
.card-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.card-title svg { width: 16px; height: 16px; color: var(--c-accent); }
.card-body { padding: 22px; }
.card-footer {
    padding: 14px 22px;
    border-top: 1px solid var(--c-border);
    background: var(--c-surface-2);
}

/* ---- Stat Cards ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}
.stat-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 20px 22px;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition), transform var(--transition);
}
.stat-card:hover { border-color: var(--c-accent); transform: translateY(-2px); }
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--c-accent);
    opacity: 0;
    transition: opacity var(--transition);
}
.stat-card:hover::before { opacity: 1; }
.stat-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: var(--c-accent-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}
.stat-icon svg { width: 18px; height: 18px; color: var(--c-accent); }
.stat-icon.warning { background: var(--c-warning-dim); }
.stat-icon.warning svg { color: var(--c-warning); }
.stat-icon.danger { background: var(--c-danger-dim); }
.stat-icon.danger svg { color: var(--c-danger); }
.stat-icon.success { background: var(--c-success-dim); }
.stat-icon.success svg { color: var(--c-success); }
.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}
.stat-label { font-size: 0.8rem; color: var(--c-text-muted); text-transform: uppercase; letter-spacing: .06em; font-weight: 500; }

/* ---- Grid Layouts ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.section-gap { margin-bottom: 24px; }

/* ---- Document Cards ---- */
.doc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.doc-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}
.doc-card:hover { border-color: var(--c-accent); box-shadow: var(--shadow-accent); }
.doc-card-top { display: flex; align-items: flex-start; gap: 14px; }
.doc-type-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: .05em;
    text-transform: uppercase;
}
.doc-type-icon.pdf { background: rgba(247,79,79,.15); color: #f74f4f; }
.doc-type-icon.jpg, .doc-type-icon.jpeg, .doc-type-icon.png { background: rgba(79,142,247,.15); color: var(--c-accent); }
.doc-info { flex: 1; min-width: 0; }
.doc-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--c-text);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.doc-meta { font-size: 0.8rem; color: var(--c-text-muted); }
.doc-expiry { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; }
.doc-expiry svg { width: 13px; height: 13px; }
.doc-card-actions { display: flex; gap: 8px; margin-top: auto; }
.doc-category-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 0.65rem;
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    padding: 3px 8px;
    border-radius: 20px;
    background: var(--c-surface-3);
    color: var(--c-text-muted);
    border: 1px solid var(--c-border);
}

/* ---- Expiry Badges ---- */
.badge-ok { color: var(--c-success); }
.badge-warning { color: var(--c-warning); }
.badge-critical { color: var(--c-danger); }
.badge-expired { color: var(--c-text-faint); }
.expiry-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-block;
}
.badge-ok .expiry-dot { background: var(--c-success); }
.badge-warning .expiry-dot { background: var(--c-warning); }
.badge-critical .expiry-dot { background: var(--c-danger); animation: pulse 1s infinite; }
.badge-expired .expiry-dot { background: var(--c-text-faint); }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:.3; } }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 15px; height: 15px; flex-shrink: 0; }

.btn-primary { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }
.btn-primary:hover { background: #6ba3ff; box-shadow: var(--shadow-accent); }
.btn-outline { background: transparent; color: var(--c-text-muted); border-color: var(--c-border); }
.btn-outline:hover { color: var(--c-text); border-color: var(--c-border-light); background: var(--c-surface-2); }
.btn-danger { background: var(--c-danger-dim); color: var(--c-danger); border-color: rgba(247,79,79,.3); }
.btn-danger:hover { background: var(--c-danger); color: #fff; }
.btn-success { background: var(--c-success-dim); color: var(--c-success); border-color: rgba(45,214,123,.3); }
.btn-success:hover { background: var(--c-success); color: var(--c-bg); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-sm svg { width: 13px; height: 13px; }
.btn-full { width: 100%; justify-content: center; }
.btn-lg { padding: 12px 24px; font-size: 0.95rem; }

/* ---- Forms ---- */
.form-group { margin-bottom: 20px; }
.form-label {
    display: block;
    margin-bottom: 7px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--c-text-muted);
    font-family: var(--font-display);
    letter-spacing: .02em;
}
.form-label .required { color: var(--c-danger); margin-left: 3px; }
.form-control {
    width: 100%;
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    color: var(--c-text);
    font-size: 0.9rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    appearance: none;
}
.form-control:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px var(--c-accent-dim);
}
.form-control::placeholder { color: var(--c-text-faint); }
textarea.form-control { resize: vertical; min-height: 90px; }
select.form-control { cursor: pointer; }
.form-hint { font-size: 0.78rem; color: var(--c-text-faint); margin-top: 5px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-error { color: var(--c-danger); font-size: 0.8rem; margin-top: 5px; }

/* File upload zone */
.upload-zone {
    border: 2px dashed var(--c-border);
    border-radius: var(--radius-lg);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
    position: relative;
}
.upload-zone:hover, .upload-zone.drag-over {
    border-color: var(--c-accent);
    background: var(--c-accent-dim);
}
.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}
.upload-zone-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-xl);
    background: var(--c-accent-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}
.upload-zone-icon svg { width: 24px; height: 24px; color: var(--c-accent); }
.upload-zone-label { font-family: var(--font-display); font-weight: 700; margin-bottom: 6px; }
.upload-zone-sub { font-size: 0.82rem; color: var(--c-text-faint); }
.upload-file-name { font-size: 0.85rem; color: var(--c-accent); margin-top: 10px; font-weight: 500; }

/* Checkbox / multi-select */
.check-list { display: flex; flex-direction: column; gap: 8px; max-height: 180px; overflow-y: auto; padding-right: 4px; }
.check-item { display: flex; align-items: center; gap: 10px; }
.check-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--c-accent);
    cursor: pointer;
    flex-shrink: 0;
}
.check-item label { font-size: 0.875rem; cursor: pointer; }

/* ---- Table ---- */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--c-border); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.data-table th {
    background: var(--c-surface-2);
    padding: 12px 16px;
    text-align: left;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--c-text-muted);
    border-bottom: 1px solid var(--c-border);
    white-space: nowrap;
}
.data-table td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--c-border);
    color: var(--c-text);
    vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--c-surface-2); }
.td-actions { display: flex; gap: 6px; }
.td-muted { color: var(--c-text-muted); font-size: 0.82rem; }

/* ---- Alerts ---- */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid transparent;
}
.alert svg { width: 17px; height: 17px; flex-shrink: 0; }
.alert-success { background: var(--c-success-dim); color: var(--c-success); border-color: rgba(45,214,123,.25); }
.alert-error { background: var(--c-danger-dim); color: var(--c-danger); border-color: rgba(247,79,79,.25); }
.alert-info { background: var(--c-accent-dim); color: var(--c-accent); border-color: rgba(79,142,247,.25); }
.alert-warning { background: var(--c-warning-dim); color: var(--c-warning); border-color: rgba(245,166,35,.25); }

/* ---- Pagination ---- */
.pagination { display: flex; align-items: center; gap: 6px; margin-top: 24px; flex-wrap: wrap; }
.page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: var(--radius-md);
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    color: var(--c-text-muted);
    font-size: 0.85rem;
    font-family: var(--font-display);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.page-btn:hover { border-color: var(--c-accent); color: var(--c-accent); text-decoration: none; }
.page-btn.active { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }
.page-btn:disabled, .page-btn.disabled { opacity: .4; cursor: not-allowed; }

/* ---- Status badges ---- */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
}
.status-active { background: var(--c-success-dim); color: var(--c-success); }
.status-inactive { background: var(--c-surface-3); color: var(--c-text-faint); }
.status-expired { background: var(--c-danger-dim); color: var(--c-danger); }

.role-admin { background: rgba(155,89,182,.15); color: #c39bd3; }
.role-management { background: var(--c-accent-dim); color: var(--c-accent); }
.role-staff { background: var(--c-surface-3); color: var(--c-text-muted); }

/* ---- Filters bar ---- */
.filters-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    align-items: center;
}
.filters-bar .form-control { max-width: 220px; }
.filter-group { display: flex; gap: 8px; align-items: center; }
.filter-chip {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--c-border);
    background: var(--c-surface-2);
    color: var(--c-text-muted);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    text-decoration: none;
}
.filter-chip:hover, .filter-chip.active {
    border-color: var(--c-accent);
    color: var(--c-accent);
    background: var(--c-accent-dim);
    text-decoration: none;
}

/* ---- Empty state ---- */
.empty-state {
    text-align: center;
    padding: 64px 24px;
    color: var(--c-text-muted);
}
.empty-state-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-xl);
    background: var(--c-surface-2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.empty-state-icon svg { width: 32px; height: 32px; color: var(--c-text-faint); }
.empty-state h3 { margin-bottom: 8px; color: var(--c-text); }
.empty-state p { font-size: 0.875rem; margin-bottom: 20px; }

/* ---- Login Page ---- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--c-bg);
    position: relative;
    overflow: hidden;
}
.login-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 10% 80%, rgba(79,142,247,.08) 0%, transparent 70%),
        radial-gradient(ellipse 40% 30% at 90% 20%, rgba(79,142,247,.05) 0%, transparent 70%);
    pointer-events: none;
}
.login-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 900px;
    width: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--c-border);
    position: relative;
    z-index: 1;
}
.login-left {
    background: var(--c-accent);
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}
.login-left::before {
    content: '◈';
    position: absolute;
    bottom: -20px;
    right: -20px;
    font-size: 14rem;
    opacity: .07;
    color: #fff;
    font-family: var(--font-display);
    line-height: 1;
}
.login-brand { font-family: var(--font-display); font-weight: 800; font-size: 1.8rem; color: #fff; }
.login-tagline { font-size: 0.9rem; color: rgba(255,255,255,.75); margin-top: 8px; }
.login-features { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.login-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: rgba(255,255,255,.85);
}
.login-features li::before { content: '✓'; font-weight: 700; font-size: 0.85rem; }
.login-right { background: var(--c-surface); padding: 48px 40px; }
.login-right h2 { margin-bottom: 6px; }
.login-right p { font-size: 0.875rem; margin-bottom: 32px; }
.login-footer-link { font-size: 0.8rem; color: var(--c-text-faint); margin-top: 20px; text-align: center; }

/* ---- Log table ---- */
.action-log { font-size: 0.75rem; font-family: var(--font-display); font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: 2px 8px; border-radius: 20px; }
.action-upload { background: var(--c-accent-dim); color: var(--c-accent); }
.action-view   { background: var(--c-success-dim); color: var(--c-success); }
.action-download { background: rgba(155,89,182,.15); color: #c39bd3; }
.action-delete { background: var(--c-danger-dim); color: var(--c-danger); }
.action-login  { background: var(--c-warning-dim); color: var(--c-warning); }
.action-logout, .action-session_timeout { background: var(--c-surface-3); color: var(--c-text-faint); }

/* ---- Progress bar ---- */
.progress-bar { background: var(--c-surface-3); border-radius: 20px; height: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--c-accent); border-radius: 20px; transition: width .5s ease; }

/* ---- Detail view ---- */
.detail-meta { display: flex; flex-direction: column; gap: 14px; }
.detail-row { display: flex; gap: 12px; }
.detail-label { font-size: 0.8rem; font-family: var(--font-display); font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--c-text-faint); min-width: 120px; flex-shrink: 0; padding-top: 2px; }
.detail-value { font-size: 0.9rem; color: var(--c-text); }

/* ---- Preview ---- */
.doc-preview-frame {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--c-surface-2);
}
.preview-image { max-width: 100%; border-radius: var(--radius-md); }

/* ---- Admin user toggle ---- */
.toggle-switch { position: relative; display: inline-flex; align-items: center; cursor: pointer; gap: 8px; }
.toggle-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
    width: 38px;
    height: 20px;
    background: var(--c-border);
    border-radius: 20px;
    position: relative;
    transition: background var(--transition);
}
.toggle-switch input:checked + .toggle-track { background: var(--c-success); }
.toggle-knob {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition);
}
.toggle-switch input:checked ~ .toggle-track .toggle-knob { transform: translateX(18px); }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .login-grid { grid-template-columns: 1fr; }
    .login-left { display: none; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { --header-h: 56px; }
    .main-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: var(--c-surface);
        border-bottom: 1px solid var(--c-border);
        flex-direction: column;
        align-items: stretch;
        padding: 12px 16px;
        gap: 4px;
        transform: translateY(-110%);
        transition: transform var(--transition);
        z-index: 99;
    }
    .main-nav.open { transform: translateY(0); }
    .nav-link { padding: 12px 16px; }
    .mobile-toggle { display: flex; }
    .user-name-label { display: none; }
    .page-header { flex-direction: column; }
    .page-header-actions { width: 100%; }
    .doc-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .data-table th:nth-child(3), .data-table td:nth-child(3) { display: none; }
    .filters-bar { gap: 8px; }
    .filters-bar .form-control { max-width: 100%; flex: 1; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .site-main { padding: 20px 0 40px; }
    .container { padding: 0 14px; }
    .card-body { padding: 16px; }
    .login-right { padding: 32px 24px; }
    .btn-full-mobile { width: 100%; justify-content: center; }
}

/* ---- Utility ---- */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.text-muted { color: var(--c-text-muted); }
.text-danger { color: var(--c-danger); }
.text-success { color: var(--c-success); }
.text-accent { color: var(--c-accent); }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.78rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.fw-bold { font-weight: 700; font-family: var(--font-display); }
.separator { border: none; border-top: 1px solid var(--c-border); margin: 24px 0; }