/* ==========================================================
   HKMA Email Reader - Admin Design System
   Shared styles for all admin pages (base.html)
   ========================================================== */

/* ── 1. Design Tokens ── */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary-color: #64748b;
    --success-color: #059669;
    --success-light: #ecfdf5;
    --danger-color: #dc2626;
    --danger-light: #fef2f2;
    --warning-color: #d97706;
    --warning-light: #fffbeb;
    --info-color: #0891b2;
    --info-light: #ecfeff;

    --navy-900: #0c1222;
    --navy-800: #0f172a;
    --navy-700: #1e293b;
    --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;

    --font-heading: 'Newsreader', Georgia, 'Times New Roman', serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-zh: 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', sans-serif;

    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 2. Base ── */
body {
    font-family: var(--font-body);
    background-color: var(--slate-50);
    color: var(--slate-800);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 0.9375rem;
    line-height: 1.6;
}

::selection {
    background: var(--primary-light);
    color: var(--navy-800);
}

/* ── 3. Admin Navigation ── */
.admin-nav {
    background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0;
    min-height: 60px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.admin-nav .navbar-brand {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.2rem;
    color: #fff !important;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    text-decoration: none;
    transition: opacity 0.2s var(--ease);
}

.admin-nav .navbar-brand:hover {
    opacity: 0.9;
}

.admin-brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    flex-shrink: 0;
}

.admin-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.admin-brand-sub {
    font-family: var(--font-body);
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 1px;
}

.admin-nav .navbar-nav {
    gap: 2px;
}

.admin-nav .nav-link {
    color: rgba(255, 255, 255, 0.6) !important;
    font-weight: 500;
    font-size: 0.8125rem;
    padding: 0.4375rem 0.75rem !important;
    border-radius: var(--radius-sm);
    transition: all 0.2s var(--ease);
    position: relative;
    white-space: nowrap;
}

.admin-nav .nav-link:hover {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.08);
}

.admin-nav .nav-link.active {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.12);
}

.admin-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 1px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
}

.admin-nav .nav-link i {
    font-size: 0.875rem;
    margin-right: 0.125rem;
}

.admin-nav .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.12);
    padding: 0.3rem 0.5rem;
}

.admin-nav .navbar-toggler:focus {
    box-shadow: none;
}

/* Admin dropdown */
.admin-dropdown {
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.375rem;
    min-width: 220px;
}

.admin-dropdown .dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--slate-700);
    transition: all 0.15s var(--ease);
}

.admin-dropdown .dropdown-item:hover {
    background: var(--slate-50);
    color: var(--slate-800);
}

.admin-dropdown .dropdown-item i {
    width: 1.25rem;
    margin-right: 0.375rem;
    font-size: 0.875rem;
    color: var(--slate-400);
}

.admin-dropdown .dropdown-item:hover i {
    color: var(--primary-color);
}

.admin-dropdown .dropdown-item.text-danger:hover {
    background: var(--danger-light);
}

.admin-dropdown .dropdown-item.text-danger:hover i {
    color: var(--danger-color);
}

.admin-dropdown .dropdown-divider {
    margin: 0.25rem 0;
    border-color: var(--slate-100);
}

/* ── 4. Page Title ── */
.admin-page-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.75rem;
    color: var(--navy-800);
    letter-spacing: -0.02em;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--slate-200);
}

/* Content h1 headings (used in templates) */
.container-fluid h1:first-child,
.container h1:first-child {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.75rem;
    color: var(--navy-800);
    letter-spacing: -0.02em;
}

.container-fluid h1 i,
.container h1 i {
    color: var(--primary-color);
}

/* ── 5. Cards ── */
.card {
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s var(--ease);
    background: #fff;
}

@media (hover: hover) and (pointer: fine) {
    .card:hover {
        box-shadow: var(--shadow-md);
    }
}

.card-header {
    font-weight: 600;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--slate-200);
    background: var(--slate-50);
    padding: 0.75rem 1rem;
}

.card-body {
    padding: 1rem;
}

.card-title {
    font-weight: 600;
    color: var(--navy-700);
}

.card-title.text-muted {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate-400) !important;
}

/* ── 6. Badges ── */
.badge {
    font-weight: 600;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    letter-spacing: 0.02em;
}

.badge.bg-primary { background-color: var(--primary-color) !important; }
.badge.bg-success { background-color: var(--success-color) !important; }
.badge.bg-danger { background-color: var(--danger-color) !important; }
.badge.bg-warning { background-color: var(--warning-color) !important; color: #fff !important; }
.badge.bg-info { background-color: var(--info-color) !important; color: #fff !important; }
.badge.bg-secondary { background-color: var(--slate-500) !important; }

/* ── 7. Buttons ── */
.btn {
    font-weight: 500;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
    padding: 0.4375rem 0.875rem;
    transition: all 0.2s var(--ease);
    letter-spacing: 0.01em;
}

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

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

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

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

.btn-outline-primary {
    color: var(--primary-color);
    border-color: rgba(37, 99, 235, 0.3);
}

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

.btn-outline-secondary {
    color: var(--slate-600);
    border-color: var(--slate-200);
}

.btn-outline-secondary:hover {
    background: var(--slate-50);
    border-color: var(--slate-300);
    color: var(--slate-800);
}

.btn-outline-danger {
    color: var(--danger-color);
    border-color: rgba(220, 38, 38, 0.3);
}

@media (hover: hover) and (pointer: fine) {
    .btn:hover {
        transform: translateY(-1px);
        box-shadow: var(--shadow-sm);
    }

    .btn:active {
        transform: translateY(0);
    }
}

.btn-sm {
    font-size: 0.75rem;
    padding: 0.3125rem 0.625rem;
}

/* ── 8. Tables ── */
.table {
    background-color: white;
    font-size: 0.875rem;
}

.table-responsive {
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-lg);
    border: 1px solid var(--slate-200);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table > :not(caption) > * > * {
    padding: 0.75rem 1rem;
}

.table thead th {
    background: var(--slate-50);
    border-bottom: 2px solid var(--slate-200);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate-400);
    white-space: nowrap;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(248, 250, 252, 0.5);
}

.table-hover tbody tr:hover {
    background-color: var(--primary-light) !important;
}

.table tbody td {
    border-bottom-color: var(--slate-100);
    vertical-align: middle;
    color: var(--slate-700);
}

.table-light {
    --bs-table-bg: var(--slate-50);
}

/* ── 9. Alerts ── */
.alert {
    border: none;
    border-left: 3px solid;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

.alert-success {
    background: var(--success-light);
    border-left-color: var(--success-color);
    color: #065f46;
}

.alert-danger {
    background: var(--danger-light);
    border-left-color: var(--danger-color);
    color: #991b1b;
}

.alert-warning {
    background: var(--warning-light);
    border-left-color: var(--warning-color);
    color: #92400e;
}

.alert-info {
    background: var(--info-light);
    border-left-color: var(--info-color);
    color: #155e75;
}

.alert a {
    font-weight: 600;
}

/* ── 10. Forms ── */
.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border-color: var(--slate-200);
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    color: var(--slate-800);
    background-color: var(--slate-50);
    transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s;
}

.form-control::placeholder {
    color: var(--slate-400);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: #fff;
}

.form-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--slate-500);
    margin-bottom: 0.375rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* ── 11. Nav Tabs ── */
.nav-tabs {
    border-bottom-color: var(--slate-200);
}

.nav-tabs .nav-link {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    font-weight: 500;
    font-size: 0.8125rem;
    color: var(--slate-500);
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
    transition: all 0.2s var(--ease);
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
    border-color: var(--slate-200) var(--slate-200) #fff;
    background: #fff;
}

.nav-tabs .nav-link:hover:not(.active) {
    color: var(--slate-700);
    border-color: transparent;
    background: var(--slate-50);
}

/* Scrollable tabs */
.nav-tabs-scroll {
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.nav-tabs-scroll::-webkit-scrollbar {
    display: none;
}

.nav-tabs-scroll .nav-link,
.nav-tabs-scroll .nav-link button,
.nav-tabs-scroll .nav-link a {
    white-space: nowrap;
}

/* Nav pills */
.nav-pills .nav-link {
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.8125rem;
    color: var(--slate-600);
    padding: 0.375rem 0.875rem;
    transition: all 0.2s var(--ease);
}

.nav-pills .nav-link.active {
    background: var(--primary-color);
}

/* ── 12. Dashboard Stats ── */
.stat-card {
    text-align: center;
    padding: 1.25rem;
}

.stat-card .stat-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 0.6875rem;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    margin-top: 0.25rem;
}

/* ── 13. Summary Display ── */
.summary-text {
    white-space: normal;
    word-break: break-word;
    line-height: 1.75;
    font-size: 0.9375rem;
    color: var(--slate-700);
}

.summary-text p,
.summary-text ul,
.summary-text ol,
.summary-text .summary-group,
.summary-text .summary-kv {
    margin: 0 0 0.85rem 0;
}

.summary-text p:last-child,
.summary-text ul:last-child,
.summary-text ol:last-child,
.summary-text .summary-group:last-child,
.summary-text .summary-kv:last-child {
    margin-bottom: 0;
}

.summary-text ul,
.summary-text ol {
    padding-left: 1.25rem;
}

.summary-text li + li {
    margin-top: 0.45rem;
}

.summary-text strong {
    font-weight: 700;
    color: var(--navy-800);
}

.summary-text code {
    background: rgba(37, 99, 235, 0.06);
    color: var(--primary-hover);
    padding: 0.1rem 0.32rem;
    border-radius: 4px;
    font-size: 0.875em;
}

.summary-text .summary-block-title,
.summary-text .summary-group-title,
.summary-text .summary-kv-key {
    font-weight: 700;
    color: var(--navy-800);
    margin-bottom: 0.35rem;
}

.summary-text .summary-block-title:not(:first-child),
.summary-text .summary-group-title:not(:first-child) {
    margin-top: 1rem;
}

.summary-text .summary-group-body,
.summary-text .summary-kv-value {
    padding-left: 0.1rem;
}

/* Summary section switcher */
.summary-section-switcher {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    background: #fff;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
}

.summary-section-switcher .nav-pills {
    gap: 0.5rem;
}

.summary-section-switcher .nav-link {
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
}

.summary-section-switcher .badge {
    pointer-events: none;
}

.summary-section-content .card {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.summary-section-content .card-header {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.75rem 1.125rem;
}

.summary-section-content .card-header.bg-primary {
    background: var(--primary-color) !important;
}

.summary-meta {
    background: var(--slate-50) !important;
    border: 1px solid var(--slate-200) !important;
    border-left: 3px solid var(--primary-color) !important;
    border-radius: var(--radius-md) !important;
}

.summary-meta a {
    word-break: break-word;
    color: var(--primary-color);
}

.summary-meta h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--navy-800);
}

/* ── 14. Footer ── */
.admin-footer {
    background: #fff;
    border-top: 1px solid var(--slate-200);
    padding: 0.75rem 0;
    margin-top: auto;
}

.admin-footer p {
    color: var(--slate-400);
    font-size: 0.75rem;
    font-weight: 500;
    margin: 0;
}

/* Legacy footer support */
footer {
    margin-top: auto;
}

footer.bg-light {
    background: #fff !important;
    border-top: 1px solid var(--slate-200) !important;
}

/* ── 15. Pagination ── */
.pagination .page-link {
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--slate-600);
    padding: 0.4375rem 0.75rem;
    transition: all 0.2s var(--ease);
}

.pagination .page-item + .page-item .page-link {
    margin-left: 0.25rem;
}

.pagination .page-link:hover {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: rgba(37, 99, 235, 0.2);
}

.pagination .page-item.active .page-link {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

/* ── 16. Modals ── */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.modal-header {
    background: var(--slate-50);
    border-bottom: 1px solid var(--slate-200);
    padding: 1rem 1.25rem;
}

.modal-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.0625rem;
    color: var(--navy-800);
}

.modal-footer {
    background: var(--slate-50);
    border-top: 1px solid var(--slate-200);
    padding: 0.75rem 1.25rem;
}

/* ── 17. Form switch / toggle ── */
.form-switch .form-check-input {
    width: 2.5rem;
    height: 1.25rem;
    border-radius: var(--radius-full);
}

.form-switch .form-check-input:checked {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

/* ── 18. Monospace ── */
.font-monospace {
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
}

/* ── 19. Loading spinner ── */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* ── 20. Scrollbar ── */
::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}

::-webkit-scrollbar-track {
    background: var(--slate-100);
}

::-webkit-scrollbar-thumb {
    background: var(--slate-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--slate-400);
}

/* ── 21. Utility ── */
.text-muted {
    color: var(--slate-500) !important;
}

hr {
    border-color: var(--slate-200);
    opacity: 1;
}

a {
    color: var(--primary-color);
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
}

/* ── 22. Responsive ── */
@media (max-width: 991.98px) {
    .admin-nav .navbar-collapse {
        padding: 0.75rem 0;
    }

    .admin-nav .nav-link {
        padding: 0.5rem 0.75rem !important;
    }
}

@media (max-width: 767.98px) {
    .admin-nav .navbar-brand {
        font-size: 1rem;
    }

    .admin-brand-sub {
        display: none;
    }

    .stat-card .stat-value {
        font-size: 1.5rem;
    }

    h1 {
        font-size: 1.375rem !important;
    }
}

/* ── 23. Print ── */
@media print {
    .admin-nav,
    .admin-footer,
    .pagination,
    .btn,
    .modal {
        display: none !important;
    }

    body {
        background: #fff;
        font-size: 10pt;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}