/* ═══════════════════════════════════════════════════════════════════════════
   SLAtech ChatBot — Admin Design System
   v1.0 — April 2026
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── 1. CSS Variables ─────────────────────────────────────────────────────── */
:root {
    --primary:        #1B2566;
    --primary-hover:  #141c4f;
    --accent:         #1AAFAA;
    --accent-hover:   #149e9a;
    --accent-alpha:   rgba(26, 175, 170, 0.12);
    --danger:         #ef4444;
    --warning:        #f59e0b;
    --success:        #10b981;
    --info:           #3b82f6;

    --sidebar-bg:     #0f1623;
    --sidebar-hover:  rgba(255, 255, 255, 0.05);
    --sidebar-active: rgba(26, 175, 170, 0.12);
    --sidebar-border: #1e2535;
    --sidebar-text:   #94a3b8;
    --sidebar-text-active: #f1f5f9;
    --sidebar-width:  256px;

    --bg:             #f8fafc;
    --white:          #ffffff;
    --border:         #e2e8f0;
    --text:           #1e293b;
    --muted:          #64748b;

    --topbar-height:  56px;
    --radius:         8px;
    --radius-lg:      12px;
    --shadow-sm:      0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
    --shadow-md:      0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.05);
}

/* ── 2. Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.875rem;
    line-height: 1.5;
    background: var(--bg);
    color: var(--text);
}

a { text-decoration: none; }

/* ── 3. Layout ────────────────────────────────────────────────────────────── */
#sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 200;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: #1e2535 transparent;
    transition: transform 0.25s ease;
}

#main-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0;
}

/* ── 4. Sidebar Brand ─────────────────────────────────────────────────────── */
.sidebar-brand {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.sidebar-brand .brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand .brand-logo img,
.sidebar-brand .brand-logo svg {
    height: 28px;
    width: auto;
}

.sidebar-brand .brand-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.01em;
}

.sidebar-brand .brand-subtitle {
    font-size: 0.68rem;
    color: var(--sidebar-text);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 2px;
}

/* ── 5. Sidebar Groups & Nav Items ────────────────────────────────────────── */
.sidebar-body {
    flex: 1;
    padding: 8px 0 16px;
    overflow-y: auto;
}

.nav-group {
    margin-bottom: 2px;
}

.nav-group-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px 5px;
    font-size: 0.68rem;
    font-weight: 600;
    color: #475569;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
}

.nav-group-label .group-icon {
    margin-right: 6px;
    font-size: 0.75rem;
    opacity: 0.7;
}

.nav-group-label .chevron {
    font-size: 0.7rem;
    color: #475569;
    transition: transform 0.2s ease;
    margin-left: auto;
}

.nav-group.collapsed .chevron {
    transform: rotate(-90deg);
}

.nav-group-items {
    list-style: none;
    margin: 0;
    padding: 0 10px;
    overflow: hidden;
    max-height: 1000px;
    transition: max-height 0.3s ease;
}

.nav-group.collapsed .nav-group-items {
    max-height: 0;
}

.nav-group-items .nav-link {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 10px;
    border-radius: var(--radius);
    color: var(--sidebar-text);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
    margin-bottom: 1px;
    position: relative;
}

.nav-group-items .nav-link i {
    font-size: 0.95rem;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.75;
}

.nav-group-items .nav-link:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.nav-group-items .nav-link:hover i { opacity: 1; }

.nav-group-items .nav-link.active {
    background: var(--sidebar-active);
    color: var(--sidebar-text-active);
    border-left: 3px solid var(--accent);
    padding-left: 7px;
}

.nav-group-items .nav-link.active i { opacity: 1; }

/* New badge on nav item */
.nav-badge-new {
    margin-left: auto;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 20px;
    background: var(--accent);
    color: white;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ── 6. Sidebar Footer ────────────────────────────────────────────────────── */
.sidebar-footer {
    flex-shrink: 0;
    border-top: 1px solid var(--sidebar-border);
    padding: 14px 16px;
}

.sidebar-footer .footer-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-footer .footer-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.sidebar-footer .footer-info { flex: 1; min-width: 0; }

.sidebar-footer .footer-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: #e2e8f0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer .footer-role {
    font-size: 0.68rem;
    color: var(--sidebar-text);
    margin-top: 1px;
}

.sidebar-footer .footer-logout {
    background: none;
    border: none;
    padding: 5px;
    color: var(--sidebar-text);
    cursor: pointer;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
    display: flex;
    align-items: center;
}

.sidebar-footer .footer-logout:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* ── 7. Topbar ────────────────────────────────────────────────────────────── */
#topbar {
    height: var(--topbar-height);
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    flex-shrink: 0;
    gap: 16px;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.topbar-hamburger {
    display: none;
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--muted);
    border-radius: 6px;
    font-size: 1.2rem;
    line-height: 1;
}

.topbar-hamburger:hover { background: var(--bg); color: var(--text); }

#topbar .page-title {
    font-size: 1.0rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.topbar-icon-btn {
    background: none;
    border: 1px solid var(--border);
    width: 34px;
    height: 34px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.15s, color 0.15s;
    text-decoration: none;
}

.topbar-icon-btn:hover {
    background: var(--bg);
    color: var(--text);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 10px 4px 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text);
    transition: background 0.15s;
}

.topbar-user:hover { background: var(--bg); }

.topbar-user .user-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
}

/* ── 8. Trial Banners ─────────────────────────────────────────────────────── */
.trial-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 24px;
    font-size: 0.82rem;
    font-weight: 500;
    flex-shrink: 0;
}

.trial-banner.trial-expired {
    background: #fef2f2;
    border-bottom: 1px solid #fecaca;
    color: #991b1b;
}

.trial-banner.trial-warning {
    background: #fffbeb;
    border-bottom: 1px solid #fcd34d;
    color: #92400e;
}

.trial-banner a {
    color: inherit;
    font-weight: 700;
    text-decoration: underline;
}

/* ── 9. Content Area ──────────────────────────────────────────────────────── */
#content {
    padding: 24px;
    flex: 1;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.page-header .page-subtitle {
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: 2px;
}

/* ── 10. Stat Cards ───────────────────────────────────────────────────────── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: box-shadow 0.2s;
}

.stat-card:hover { box-shadow: var(--shadow-md); }

.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.stat-icon.icon-primary  { background: rgba(27, 37, 102, 0.1); color: var(--primary); }
.stat-icon.icon-accent   { background: rgba(26, 175, 170, 0.1); color: var(--accent); }
.stat-icon.icon-success  { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.stat-icon.icon-warning  { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-icon.icon-danger   { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.stat-icon.icon-info     { background: rgba(59, 130, 246, 0.1); color: var(--info); }

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.1;
}

.stat-card .stat-label {
    font-size: 0.78rem;
    color: var(--muted);
    font-weight: 500;
}

.stat-card .stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 20px;
    width: fit-content;
}

.stat-trend.up   { background: #dcfce7; color: #166534; }
.stat-trend.down { background: #fee2e2; color: #991b1b; }
.stat-trend.flat { background: #f1f5f9; color: #64748b; }

/* ── 11. Tables ───────────────────────────────────────────────────────────── */
.admin-table-wrap {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.admin-table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    gap: 12px;
    flex-wrap: wrap;
}

.admin-table-header .table-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text);
}

.table.admin-table {
    margin: 0;
    font-size: 0.875rem;
}

.admin-table thead th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    background: #f8fafc;
    border-bottom: 2px solid var(--border);
    padding: 11px 16px;
    white-space: nowrap;
}

.admin-table tbody td {
    padding: 12px 16px;
    vertical-align: middle;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text);
}

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

.admin-table tbody tr:hover td { background: #fafbfc; }

.admin-table .actions-col {
    text-align: right;
    white-space: nowrap;
}

.admin-table .actions-col .btn { margin-left: 4px; }

/* ── 12. Buttons ──────────────────────────────────────────────────────────── */
.btn {
    font-weight: 600;
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: background 0.15s, box-shadow 0.15s, opacity 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

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

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.btn-accent:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: white;
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-ghost:hover {
    background: var(--bg);
    border-color: #cbd5e1;
    color: var(--text);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 0.8rem;
}

/* Icon-only action buttons in tables */
.btn-icon {
    width: 30px;
    height: 30px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.9rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    cursor: pointer;
}

.btn-icon:hover { background: var(--bg); color: var(--text); border-color: #cbd5e1; }
.btn-icon.btn-icon-danger:hover { background: #fef2f2; color: var(--danger); border-color: #fecaca; }
.btn-icon.btn-icon-primary:hover { background: rgba(27,37,102,.08); color: var(--primary); border-color: rgba(27,37,102,.2); }

/* ── 13. Badges & Pills ───────────────────────────────────────────────────── */
.badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
    letter-spacing: 0.02em;
}

.badge-superadmin  { background: #dc2626; color: white; }
.badge-clientadmin { background: #2563eb; color: white; }

.badge-active   { background: #dcfce7; color: #166534; }
.badge-pending  { background: #fef9c3; color: #854d0e; }
.badge-inactive { background: #f1f5f9; color: #64748b; }
.badge-new      { background: #eff6ff; color: #1d4ed8; }
.badge-error    { background: #fee2e2; color: #991b1b; }
.badge-warning  { background: #fef3c7; color: #92400e; }

/* Vertical product badges */
.badge-med           { background: #e0f2fe; color: #0369a1; }
.badge-edu           { background: #ede9fe; color: #6d28d9; }
.badge-hospitality   { background: #fef3c7; color: #92400e; }
.badge-sales         { background: #dcfce7; color: #166534; }

/* ── 14. Forms ────────────────────────────────────────────────────────────── */
.form-control,
.form-select {
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 9px 12px;
    font-size: 0.875rem;
    color: var(--text);
    background: var(--white);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(26, 175, 170, 0.15);
    outline: none;
}

.form-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 5px;
}

.form-text {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 4px;
}

.input-group .form-control:focus { z-index: 3; }

.admin-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.admin-card .card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

/* ── 15. Empty States ─────────────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 64px 24px;
    color: var(--muted);
}

.empty-state .empty-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    opacity: 0.4;
    display: block;
}

.empty-state .empty-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

.empty-state .empty-sub {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 20px;
}

/* ── 16. Alerts ───────────────────────────────────────────────────────────── */
.alert {
    border-radius: var(--radius);
    font-size: 0.875rem;
    padding: 12px 16px;
    border-width: 1px;
    border-style: solid;
}

.alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

.alert-danger {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background: #fffbeb;
    border-color: #fcd34d;
    color: #92400e;
}

.alert-info {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: #1e40af;
}

/* ── 17. Modals ───────────────────────────────────────────────────────────── */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0,0,0,.15);
}

.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 18px 24px;
}

.modal-title {
    font-size: 1rem;
    font-weight: 700;
}

.modal-body { padding: 20px 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); }

/* ── 18. Mobile ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    #sidebar {
        transform: translateX(-100%);
        z-index: 300;
    }

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

    #main-wrapper {
        margin-left: 0;
    }

    .topbar-hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    #sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,.45);
        z-index: 250;
    }

    #sidebar-overlay.show { display: block; }

    #content { padding: 16px; }

    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

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

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

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

/* ── 19. Utilities ────────────────────────────────────────────────────────── */
.text-muted  { color: var(--muted) !important; }
.text-accent { color: var(--accent) !important; }
.text-primary-brand { color: var(--primary) !important; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.mono {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Divider */
.nav-divider {
    height: 1px;
    background: var(--sidebar-border);
    margin: 6px 16px;
}

/* Scrollbar polish */
#sidebar::-webkit-scrollbar { width: 4px; }
#sidebar::-webkit-scrollbar-track { background: transparent; }
#sidebar::-webkit-scrollbar-thumb { background: #1e2535; border-radius: 4px; }


/* ═══════════════════════════════════════════════════════════════════════════
   PHASE 1 REDESIGN — TWO-TIER TOKEN SYSTEM + COMPONENT LIBRARY
   v2.0 — Apr 2026
   The block above (v1.0) stays untouched until per-page migrations land.
   New components below use logical properties (margin-inline-start, etc.) so
   RTL flips automatically with dir="rtl" — no row-reverse hacks.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── R1. Raw token scales (theme-invariant) ───────────────────────────────── */
:root {
    /* Slate (neutral) */
    --slate-50:  #f8fafc;  --slate-100: #f1f5f9;  --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;  --slate-400: #94a3b8;  --slate-500: #64748b;
    --slate-600: #475569;  --slate-700: #334155;  --slate-800: #1e293b;
    --slate-900: #0f172a;  --slate-950: #020617;

    /* Teal (accent / brand) */
    --teal-50:  #f0fdfa;   --teal-100: #ccfbf1;   --teal-200: #99f6e4;
    --teal-300: #5eead4;   --teal-400: #2dd4bf;   --teal-500: #14b8a6;
    --teal-600: #0d9488;   --teal-700: #0f766e;   --teal-800: #115e59;

    /* Status: success */
    --success-50: #f0fdf4;  --success-100: #dcfce7; --success-300: #86efac;
    --success-500: #22c55e; --success-600: #16a34a; --success-700: #15803d;

    /* Status: info */
    --info-50: #eff6ff;     --info-100: #dbeafe;    --info-300: #93c5fd;
    --info-500: #3b82f6;    --info-600: #2563eb;    --info-700: #1d4ed8;

    /* Status: warning */
    --warning-50: #fffbeb;  --warning-100: #fef3c7; --warning-300: #fcd34d;
    --warning-500: #f59e0b; --warning-600: #d97706; --warning-700: #b45309;

    /* Status: danger */
    --danger-50: #fef2f2;   --danger-100: #fee2e2;  --danger-300: #fca5a5;
    --danger-500: #ef4444;  --danger-600: #dc2626;  --danger-700: #b91c1c;
}

/* ── R2. Semantic tokens — light theme (default) ──────────────────────────── */
:root,
[data-theme="light"] {
    --surface-base:        var(--slate-50);
    --surface-elevated:    #ffffff;
    --surface-sunken:      var(--slate-100);
    --surface-overlay:     rgba(15, 23, 42, 0.5);
    --surface-hover:       var(--slate-100);

    --border-subtle:       var(--slate-200);
    --border-strong:       var(--slate-300);

    --text-primary:        var(--slate-800);
    --text-secondary:      var(--slate-600);
    --text-muted:          var(--slate-500);
    --text-inverse:        #ffffff;
    --text-link:           var(--teal-700);

    --accent-bg:           var(--teal-500);
    --accent-bg-hover:     var(--teal-600);
    --accent-fg:           #ffffff;
    --accent-soft-bg:      var(--teal-50);
    --accent-soft-fg:      var(--teal-700);

    --status-success-bg:   var(--success-50);
    --status-success-fg:   var(--success-700);
    --status-success-bd:   var(--success-300);
    --status-info-bg:      var(--info-50);
    --status-info-fg:      var(--info-700);
    --status-info-bd:      var(--info-300);
    --status-warning-bg:   var(--warning-50);
    --status-warning-fg:   var(--warning-700);
    --status-warning-bd:   var(--warning-300);
    --status-danger-bg:    var(--danger-50);
    --status-danger-fg:    var(--danger-700);
    --status-danger-bd:    var(--danger-300);

    --shadow-soft:         0 1px 2px rgba(15, 23, 42, .04), 0 1px 1px rgba(15, 23, 42, .03);
    --shadow-med:          0 4px 12px rgba(15, 23, 42, .06), 0 2px 4px rgba(15, 23, 42, .04);
    --shadow-high:         0 12px 28px rgba(15, 23, 42, .12), 0 6px 12px rgba(15, 23, 42, .06);

    --focus-ring:          0 0 0 3px var(--teal-200);
}

/* ── R3. Semantic tokens — dark theme overrides ───────────────────────────── */
[data-theme="dark"] {
    --surface-base:        var(--slate-900);
    --surface-elevated:    var(--slate-800);
    --surface-sunken:      var(--slate-950);
    --surface-overlay:     rgba(2, 6, 23, 0.7);
    --surface-hover:       rgba(255, 255, 255, 0.04);

    --border-subtle:       rgba(255, 255, 255, 0.08);
    --border-strong:       rgba(255, 255, 255, 0.16);

    --text-primary:        var(--slate-100);
    --text-secondary:      var(--slate-300);
    --text-muted:          var(--slate-400);
    --text-inverse:        var(--slate-900);
    --text-link:           var(--teal-300);

    --accent-bg:           var(--teal-500);
    --accent-bg-hover:     var(--teal-400);
    --accent-fg:           #ffffff;
    --accent-soft-bg:      rgba(20, 184, 166, 0.15);
    --accent-soft-fg:      var(--teal-300);

    --status-success-bg:   rgba(34, 197, 94, 0.12);
    --status-success-fg:   var(--success-300);
    --status-success-bd:   rgba(34, 197, 94, 0.3);
    --status-info-bg:      rgba(59, 130, 246, 0.12);
    --status-info-fg:      var(--info-300);
    --status-info-bd:      rgba(59, 130, 246, 0.3);
    --status-warning-bg:   rgba(245, 158, 11, 0.12);
    --status-warning-fg:   var(--warning-300);
    --status-warning-bd:   rgba(245, 158, 11, 0.3);
    --status-danger-bg:    rgba(239, 68, 68, 0.12);
    --status-danger-fg:    var(--danger-300);
    --status-danger-bd:    rgba(239, 68, 68, 0.3);

    --shadow-soft:         0 1px 2px rgba(0, 0, 0, .25);
    --shadow-med:          0 4px 12px rgba(0, 0, 0, .35);
    --shadow-high:         0 12px 28px rgba(0, 0, 0, .55);

    --focus-ring:          0 0 0 3px rgba(20, 184, 166, 0.4);
}

/* ── R4. Typography scale ─────────────────────────────────────────────────── */
:root {
    --font-size-xs:   0.75rem;
    --font-size-sm:   0.825rem;
    --font-size-base: 0.9375rem;
    --font-size-md:   1rem;
    --font-size-lg:   1.125rem;
    --font-size-xl:   1.25rem;
    --font-size-2xl:  1.5rem;
    --font-size-3xl:  1.875rem;
    --font-size-4xl:  2.25rem;

    --font-weight-regular:  400;
    --font-weight-medium:   500;
    --font-weight-semibold: 600;
    --font-weight-bold:     700;

    --line-height-tight:    1.2;
    --line-height-normal:   1.5;
    --line-height-relaxed:  1.7;
}

/* ── R5. Spacing scale (8pt grid) ─────────────────────────────────────────── */
:root {
    --space-1:  4px;    --space-2:  8px;    --space-3:  12px;   --space-4:  16px;
    --space-5:  20px;   --space-6:  24px;   --space-8:  32px;   --space-10: 40px;
    --space-12: 48px;   --space-16: 64px;   --space-20: 80px;
}

/* ── R6. Forms (new) ──────────────────────────────────────────────────────── */
.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.form-label .form-label-required {
    color: var(--status-danger-fg);
    margin-inline-start: 2px;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding-block: 9px;
    padding-inline: 12px;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    line-height: var(--line-height-normal);
    transition: border-color .15s, box-shadow .15s, background .15s;
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover { border-color: var(--accent-bg); }

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-bg);
    box-shadow: var(--focus-ring);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    background: var(--surface-sunken);
    color: var(--text-muted);
    cursor: not-allowed;
}

.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
    border-color: var(--status-danger-fg);
}

.form-helper {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--status-danger-fg);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Toggle switch */
.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    user-select: none;
}

.toggle input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: relative;
    width: 36px;
    height: 20px;
    background: var(--border-strong);
    border-radius: 999px;
    transition: background .15s;
    flex-shrink: 0;
}

.toggle-slider::after {
    content: "";
    position: absolute;
    top: 2px;
    inset-inline-start: 2px;
    width: 16px;
    height: 16px;
    background: #ffffff;
    border-radius: 50%;
    box-shadow: var(--shadow-soft);
    transition: inset-inline-start .15s, background .15s;
}

.toggle input[type="checkbox"]:checked + .toggle-slider {
    background: var(--accent-bg);
}

.toggle input[type="checkbox"]:checked + .toggle-slider::after {
    inset-inline-start: 18px;
}

.toggle input[type="checkbox"]:focus-visible + .toggle-slider {
    box-shadow: var(--focus-ring);
}

/* ── R7. Data table (new) ─────────────────────────────────────────────────── */
.data-table-wrapper {
    background: var(--surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--font-size-base);
}

.data-table thead th {
    text-align: start;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--surface-sunken);
    padding-block: 11px;
    padding-inline: 16px;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
}

.data-table tbody td {
    padding-block: 12px;
    padding-inline: 16px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover td { background: var(--surface-hover); }

.data-table .actions {
    text-align: end;
    white-space: nowrap;
}

.data-table .actions .btn { margin-inline-start: var(--space-1); }

.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
    background: var(--surface-elevated);
    flex-wrap: wrap;
}

.filter-bar .filter-search { flex: 1; min-width: 200px; }

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.pagination-pages {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.pagination-page {
    min-width: 32px;
    height: 32px;
    padding-inline: 8px;
    border-radius: var(--radius);
    border: 1px solid var(--border-subtle);
    background: var(--surface-elevated);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.pagination-page:hover { background: var(--surface-hover); }
.pagination-page.is-current { background: var(--accent-bg); color: var(--accent-fg); border-color: var(--accent-bg); }
.pagination-page:disabled { opacity: .4; cursor: not-allowed; }

/* Empty state — semantic-token version (legacy .empty-state still works) */
.data-empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-6);
    color: var(--text-muted);
}

.data-empty-state .data-empty-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
    opacity: .5;
    display: block;
    color: var(--text-muted);
}

.data-empty-state .data-empty-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.data-empty-state .data-empty-sub {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-5);
}

/* Skeleton loading */
@keyframes adminuiSkeleton {
    0%   { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
    display: inline-block;
    height: 12px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--surface-sunken) 0px, var(--surface-hover) 40px, var(--surface-sunken) 80px);
    background-size: 200px 100%;
    animation: adminuiSkeleton 1.2s ease-in-out infinite;
}

.skeleton-line { width: 100%; }
.skeleton-line.skeleton-line-sm { width: 40%; }
.skeleton-line.skeleton-line-md { width: 70%; }

/* ── R8. Toast system (new) ───────────────────────────────────────────────── */
.toast-stack {
    position: fixed;
    inset-block-end: var(--space-5);
    inset-inline-end: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: 1080;
    max-width: min(360px, calc(100vw - 32px));
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-inline-start: 3px solid var(--text-muted);
    border-radius: var(--radius);
    box-shadow: var(--shadow-high);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    pointer-events: auto;
    transform: translateY(8px);
    opacity: 0;
    transition: transform .2s ease, opacity .2s ease;
}

.toast.toast-in  { transform: translateY(0);   opacity: 1; }
.toast.toast-out { transform: translateY(-8px); opacity: 0; }

.toast-icon {
    flex-shrink: 0;
    font-size: 1rem;
    margin-block-start: 1px;
}

.toast-body {
    flex: 1;
    min-width: 0;
    word-wrap: break-word;
}

.toast-close {
    background: transparent;
    border: 0;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    line-height: 1;
    border-radius: var(--radius);
    transition: color .15s, background .15s;
}

.toast-close:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
}

.toast.toast-success { border-inline-start-color: var(--status-success-fg); }
.toast.toast-success .toast-icon { color: var(--status-success-fg); }
.toast.toast-info    { border-inline-start-color: var(--status-info-fg); }
.toast.toast-info .toast-icon    { color: var(--status-info-fg); }
.toast.toast-warning { border-inline-start-color: var(--status-warning-fg); }
.toast.toast-warning .toast-icon { color: var(--status-warning-fg); }
.toast.toast-error   { border-inline-start-color: var(--status-danger-fg); }
.toast.toast-error .toast-icon   { color: var(--status-danger-fg); }

/* ── R9. Modal (additive) ─────────────────────────────────────────────────── */
[data-theme="dark"] .modal-content {
    background: var(--surface-elevated);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--border-subtle);
}

[data-theme="dark"] .modal-backdrop { background: var(--surface-overlay); }

/* ── R10. Cards & section headers (new — coexist with legacy .stat-card) ── */
.card-v2 {
    background: var(--surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-soft);
}

.card-v2 + .card-v2 { margin-block-start: var(--space-4); }

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-4);
    margin-block-end: var(--space-5);
    padding-block-end: var(--space-3);
    border-block-end: 1px solid var(--border-subtle);
}

.section-header .section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    line-height: var(--line-height-tight);
}

.section-header .section-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-block-start: var(--space-1);
}

/* Dark-theme overrides for legacy stat-card */
[data-theme="dark"] .stat-card {
    background: var(--surface-elevated);
    border-color: var(--border-subtle);
    color: var(--text-primary);
}

[data-theme="dark"] .stat-card .stat-value { color: var(--text-primary); }
[data-theme="dark"] .stat-card .stat-label { color: var(--text-muted); }

/* ── R11. Buttons (new — coexist with legacy .btn-primary etc.) ─────────── */
.btn-v2 {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding-block: 9px;
    padding-inline: 16px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, border-color .15s, color .15s, opacity .15s, box-shadow .15s;
    user-select: none;
    white-space: nowrap;
}

.btn-v2:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.btn-v2:disabled,
.btn-v2[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }

.btn-v2-primary {
    background: var(--accent-bg);
    color: var(--accent-fg);
    border-color: var(--accent-bg);
}
.btn-v2-primary:hover:not(:disabled) {
    background: var(--accent-bg-hover);
    border-color: var(--accent-bg-hover);
    color: var(--accent-fg);
}

.btn-v2-secondary {
    background: var(--surface-elevated);
    color: var(--text-primary);
    border-color: var(--border-strong);
}
.btn-v2-secondary:hover:not(:disabled) {
    background: var(--surface-hover);
    border-color: var(--accent-bg);
    color: var(--text-primary);
}

.btn-v2-tertiary {
    background: transparent;
    color: var(--text-link);
    border-color: transparent;
    padding-inline: 8px;
}
.btn-v2-tertiary:hover:not(:disabled) {
    background: var(--accent-soft-bg);
    color: var(--accent-soft-fg);
}

.btn-v2-danger {
    background: var(--status-danger-fg);
    color: #ffffff;
    border-color: var(--status-danger-fg);
}
.btn-v2-danger:hover:not(:disabled) {
    background: var(--danger-700);
    border-color: var(--danger-700);
}

.btn-v2-icon {
    padding: 8px;
    width: 36px;
    height: 36px;
    background: transparent;
    color: var(--text-muted);
    border-color: var(--border-subtle);
}
.btn-v2-icon:hover:not(:disabled) {
    color: var(--text-primary);
    background: var(--surface-hover);
}

/* Sizing scale (orthogonal to variant) */
.btn-v2.btn-v2-sm { padding-block: 6px; padding-inline: 12px; font-size: var(--font-size-sm); }
.btn-v2.btn-v2-lg { padding-block: 12px; padding-inline: 20px; font-size: var(--font-size-md); }

/* Loading state */
.btn-v2[data-loading="true"] {
    pointer-events: none;
    color: transparent !important;
    position: relative;
}

.btn-v2[data-loading="true"]::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    color: var(--accent-fg);
    animation: adminuiBtnSpin 0.6s linear infinite;
}

.btn-v2-secondary[data-loading="true"]::after,
.btn-v2-tertiary[data-loading="true"]::after,
.btn-v2-icon[data-loading="true"]::after {
    color: var(--text-primary);
}

@keyframes adminuiBtnSpin {
    to { transform: rotate(360deg); }
}

/* RTL arrow flip rule: any icon explicitly tagged as a directional arrow
   inside a v2 button gets mirrored when the document is RTL. */
[dir="rtl"] .btn-v2 .bi.flip-rtl {
    transform: scaleX(-1);
}

/* ── R12. Topbar additions (breadcrumb + cmdk + lang dropdown + user) ──── */
.topbar-breadcrumb {
    flex: 1;
    min-width: 0;
}

.topbar-breadcrumb ol {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar-breadcrumb li + li::before {
    content: "/";
    color: var(--text-muted);
    margin-inline-end: var(--space-2);
}

.topbar-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}
.topbar-breadcrumb a:hover { color: var(--text-link); }

.topbar-breadcrumb li:last-child {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.topbar-cmdk {
    width: auto !important;
    padding-inline: 10px !important;
    gap: 8px;
    background: var(--surface-sunken) !important;
    color: var(--text-muted) !important;
    border-color: var(--border-subtle) !important;
    font-size: var(--font-size-sm);
    min-width: 180px;
    justify-content: flex-start;
}

.topbar-cmdk:hover {
    background: var(--surface-hover) !important;
    color: var(--text-primary) !important;
}

.topbar-kbd {
    margin-inline-start: auto;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.7rem;
    padding-block: 1px;
    padding-inline: 5px;
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    background: var(--surface-elevated);
    color: var(--text-muted);
    line-height: 1;
}

.topbar-bell { position: relative; }

.topbar-lang .dropdown-menu { min-width: 180px; }
.topbar-lang .dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
}
.topbar-lang .lang-code {
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    width: 28px;
}
.topbar-lang .lang-name { color: var(--text-secondary); flex: 1; }
.topbar-lang .dropdown-item.active {
    background: var(--accent-soft-bg);
    color: var(--accent-soft-fg);
}
.topbar-lang .dropdown-item.active .lang-name { color: var(--accent-soft-fg); }

.topbar-lang-current {
    font-weight: var(--font-weight-bold);
    font-size: 0.7rem;
    margin-inline-start: 4px;
}

.topbar-user-menu .topbar-user { cursor: pointer; }
.topbar-user-menu .user-name {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar-user-menu .dropdown-menu { min-width: 220px; }
.topbar-user-menu .dropdown-item {
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
}
.topbar-user-menu form { display: block; }
.topbar-user-menu form .dropdown-item { width: 100%; text-align: start; background: transparent; border: 0; }
.topbar-user-menu form .dropdown-item:hover { background: var(--surface-hover); }

/* ── R13. Command palette (⌘K modal) ─────────────────────────────────────── */
.cmdk-dialog { max-width: 600px; }
.cmdk-content {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    background: var(--surface-elevated);
    overflow: hidden;
    box-shadow: var(--shadow-high);
}

.cmdk-search {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-block-end: 1px solid var(--border-subtle);
}

.cmdk-search-icon {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.cmdk-input {
    flex: 1;
    border: 0;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-size: var(--font-size-md);
    font-family: inherit;
}

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

.cmdk-esc {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.7rem;
    padding-block: 2px;
    padding-inline: 6px;
    border: 1px solid var(--border-strong);
    border-radius: 4px;
    background: var(--surface-sunken);
    color: var(--text-muted);
}

.cmdk-results {
    max-height: 360px;
    overflow-y: auto;
}

.cmdk-result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    border-inline-start: 3px solid transparent;
}

.cmdk-result:hover,
.cmdk-result.active {
    background: var(--surface-hover);
    border-inline-start-color: var(--accent-bg);
    color: var(--text-primary);
}

.cmdk-result-group {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.cmdk-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-12) var(--space-5);
    color: var(--text-muted);
    text-align: center;
}

.cmdk-empty i {
    font-size: 1.6rem;
    opacity: 0.6;
}

.cmdk-footer {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-5);
    border-block-start: 1px solid var(--border-subtle);
    background: var(--surface-sunken);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.cmdk-footer kbd {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.7rem;
    padding-block: 1px;
    padding-inline: 5px;
    border: 1px solid var(--border-strong);
    border-radius: 3px;
    background: var(--surface-elevated);
    color: var(--text-secondary);
    margin-inline-end: 4px;
}

/* ── R14. Theme toggle ────────────────────────────────────────────────────── */
.theme-toggle-item {
    display: flex !important;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    background: transparent;
    border: 0;
    width: 100%;
    text-align: start;
}
.theme-toggle-item:hover { background: var(--surface-hover); }

/* ── R15. Account-shell layout (used by _LayoutAccount.cshtml) ──────────── */
body.account-shell {
    display: block;
    background: var(--surface-base);
    color: var(--text-primary);
    min-height: 100vh;
    margin: 0;
}

.account-main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
}

/* ── R16. Dark-theme cascade for legacy elements (additive, non-breaking) ─ */
[data-theme="dark"] body {
    background: var(--surface-base);
    color: var(--text-primary);
}

[data-theme="dark"] #topbar {
    background: var(--surface-elevated);
    border-color: var(--border-subtle);
}

[data-theme="dark"] #topbar .page-title { color: var(--text-primary); }

[data-theme="dark"] .topbar-icon-btn {
    background: transparent;
    border-color: var(--border-subtle);
    color: var(--text-muted);
}

[data-theme="dark"] .topbar-icon-btn:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

[data-theme="dark"] .topbar-user {
    background: transparent;
    border-color: var(--border-subtle);
    color: var(--text-primary);
}

[data-theme="dark"] .topbar-user:hover { background: var(--surface-hover); }

[data-theme="dark"] .admin-card,
[data-theme="dark"] .admin-table-wrap {
    background: var(--surface-elevated);
    border-color: var(--border-subtle);
    color: var(--text-primary);
}

[data-theme="dark"] .admin-table thead th {
    background: var(--surface-sunken);
    color: var(--text-muted);
    border-color: var(--border-subtle);
}

[data-theme="dark"] .admin-table tbody td { color: var(--text-primary); border-color: var(--border-subtle); }
[data-theme="dark"] .admin-table tbody tr:hover td { background: var(--surface-hover); }

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background: var(--surface-elevated);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

[data-theme="dark"] .dropdown-menu {
    background: var(--surface-elevated);
    border-color: var(--border-subtle);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item { color: var(--text-primary); }
[data-theme="dark"] .dropdown-item:hover { background: var(--surface-hover); color: var(--text-primary); }
[data-theme="dark"] .dropdown-divider { border-color: var(--border-subtle); }

/* ── R17. Account suite (Phase 2) — used by Pages/{En,He,Ru}/Account/* ───── */
/* Dark gunmetal canvas — overrides the Phase 1 light surface for auth flows. */
body.account-shell {
    background: var(--slate-900, #0f172a);
    color: var(--text-primary, #e2e8f0);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.account-main {
    padding: var(--space-6, 24px) var(--space-5, 20px);
}

/* Card — the white panel that hosts the form. */
.account-card {
    width: 100%;
    max-width: 440px;
    margin-inline: auto;
    background: #ffffff;
    color: #0f172a;
    border-radius: var(--radius-lg, 12px);
    box-shadow: var(--shadow-high, 0 12px 28px rgba(0,0,0,.35));
    padding: var(--space-8, 32px);
}

.account-card-wide { max-width: 560px; }

.account-card.text-center { text-align: center; }

/* Brand block — emoji/logo + product name above the header. */
.brand-block {
    text-align: center;
    margin-bottom: var(--space-6, 24px);
}

.brand-block .brand-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    background: rgba(27, 37, 102, 0.08);
    margin-bottom: var(--space-2, 8px);
}

.brand-block .brand-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary, #1B2566);
    letter-spacing: 0.01em;
}

.subtitle {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #64748b;
    margin-bottom: var(--space-1, 4px);
}

/* Header — H1 + lead inside the card. */
.account-header {
    margin-bottom: var(--space-6, 24px);
}

.account-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0f172a;
    margin: 0 0 var(--space-2, 8px) 0;
    line-height: 1.3;
}

.account-header .lead {
    font-size: 0.9375rem;
    color: #64748b;
    margin: 0;
    line-height: 1.5;
}

/* Form — Bootstrap 5 dropped .form-group + .btn-block, so we redefine. */
.account-form { display: block; }

.account-form .form-group {
    margin-bottom: var(--space-4, 16px);
}

.account-form label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: #334155;
    margin-bottom: var(--space-1, 4px);
}

.account-form input[type="text"],
.account-form input[type="email"],
.account-form input[type="password"],
.account-form input[type="tel"] {
    display: block;
    width: 100%;
    padding: 10px 12px;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: #0f172a;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.account-form input:focus {
    outline: none;
    border-color: var(--accent, #1AAFAA);
    box-shadow: 0 0 0 3px rgba(26, 175, 170, 0.18);
}

.account-form input::placeholder { color: #94a3b8; }

.account-form .form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2, 8px);
    margin-bottom: var(--space-4, 16px);
    font-size: 0.875rem;
    color: #475569;
}

.account-form .form-check input[type="checkbox"] {
    margin-top: 3px;
    flex-shrink: 0;
}

.account-form .form-check label {
    margin: 0;
    font-weight: 400;
    color: inherit;
}

.account-form .form-check a {
    color: var(--accent, #1AAFAA);
    text-decoration: underline;
}

/* Full-width button (Bootstrap 5 dropped .btn-block). */
.btn-block {
    display: block;
    width: 100%;
}

/* Field-level validation message. */
.form-error {
    display: block;
    font-size: 0.8125rem;
    color: #dc2626;
    margin-top: var(--space-1, 4px);
    min-height: 1em;
}

/* Suppress empty .alert-danger that asp-validation-summary renders when valid
   (jquery-validation-unobtrusive is not loaded on the account layout). */
.validation-summary-valid {
    display: none !important;
}

/* Footer — secondary links beneath the form. */
.account-footer {
    margin-top: var(--space-6, 24px);
    text-align: center;
    font-size: 0.875rem;
    color: #64748b;
}

.account-footer a {
    color: var(--accent, #1AAFAA);
    text-decoration: none;
    font-weight: 500;
}

.account-footer a:hover { text-decoration: underline; }

.account-footer .btn { margin-bottom: var(--space-3, 12px); }

.account-footnote {
    margin-top: var(--space-5, 20px);
    text-align: center;
    font-size: 0.75rem;
    color: #94a3b8;
    line-height: 1.5;
}

.account-footnote a {
    color: #64748b;
    text-decoration: underline;
}

/* RTL overrides — Hebrew layout. */
[dir="rtl"] .account-shell,
[dir="rtl"] .account-card {
    font-family: 'Heebo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

[dir="rtl"] .account-card *,
[dir="rtl"] .brand-block .brand-name,
[dir="rtl"] .account-header h1 {
    font-weight: 400;
}

[dir="rtl"] .account-header h1,
[dir="rtl"] .brand-block .brand-name { font-weight: 700; }

[dir="rtl"] label,
[dir="rtl"] .account-form .form-check label { font-weight: 500; }

/* Heebo lacks weights above 700 — clamp to keep glyphs from going synthetic-bold. */
[dir="rtl"] .account-card strong,
[dir="rtl"] .account-card b { font-weight: 700; }

/* Subtitle stays sentence-case in Hebrew (no uppercase concept). */
[dir="rtl"] .subtitle {
    text-transform: none;
    letter-spacing: 0;
}

/* Force LTR on credential inputs even in RTL flow. */
[dir="rtl"] .account-form input[type="email"],
[dir="rtl"] .account-form input[type="password"],
[dir="rtl"] .account-form input[type="tel"] {
    direction: ltr;
    text-align: start;
}