/* ============================================================================
   InFinder Design System
   A clean white/blue professional palette for AI investment analysis.
   ============================================================================ */

/* --- Design Tokens (CSS Custom Properties) --- */
:root {
    /* Primary palette — Blue */
    --if-blue-50:  #f0f7ff;
    --if-blue-100: #e0efff;
    --if-blue-200: #b8dbff;
    --if-blue-300: #7abfff;
    --if-blue-400: #3a9fff;
    --if-blue-500: #1a86f0;
    --if-blue-600: #0b6bcf;
    --if-blue-700: #0854a8;
    --if-blue-800: #0a448a;
    --if-blue-900: #0d3872;

    /* Accent — Indigo (for emphasis) */
    --if-indigo-500: #5856d6;
    --if-indigo-600: #4745b5;

    /* Neutrals */
    --if-gray-25:  #fcfcfd;
    --if-gray-50:  #f8f9fb;
    --if-gray-100: #f1f3f5;
    --if-gray-200: #e4e7eb;
    --if-gray-300: #ced3da;
    --if-gray-400: #a3adb9;
    --if-gray-500: #6c7685;
    --if-gray-600: #505a68;
    --if-gray-700: #3b4453;
    --if-gray-800: #272f3c;
    --if-gray-900: #151b26;

    /* Semantic */
    --if-success:  #1a9a5c;
    --if-success-bg: #ecfdf3;
    --if-danger:   #d9364a;
    --if-danger-bg: #fef2f2;
    --if-warning:  #d98e22;
    --if-warning-bg: #fffbeb;
    --if-info:     #1a86f0;
    --if-info-bg:  #f0f7ff;

    /* Surfaces */
    --if-body-bg:       #f4f6f9;
    --if-card-bg:       #ffffff;
    --if-card-border:   #e8ebf0;
    --if-card-shadow:   0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --if-card-shadow-lg: 0 4px 12px rgba(0,0,0,.08);

    /* Typography */
    --if-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --if-font-mono: 'SF Mono', 'Fira Code', 'Cascadia Mono', monospace;
    --if-text-primary:   var(--if-gray-900);
    --if-text-secondary: var(--if-gray-500);
    --if-text-muted:     var(--if-gray-400);

    /* Spacing */
    --if-radius-sm: 6px;
    --if-radius:    8px;
    --if-radius-lg: 12px;
    --if-radius-xl: 16px;

    /* Navbar */
    --if-nav-bg: #ffffff;
    --if-nav-border: var(--if-gray-200);
    --if-nav-height: 56px;
}

/* --- Google Fonts: Inter + Lora (serif for sepia theme) --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* --- Global Reset & Base --- */
html {
    overflow-x: clip; /* clip (not hidden) — prevents horizontal scroll without breaking position:sticky */
}
body {
    overflow-x: hidden;
}

body {
    font-family: var(--if-font-sans);
    background: var(--if-body-bg);
    color: var(--if-text-primary);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding-top: var(--if-nav-height); /* offset for fixed navbar */
}

/* --- Navbar --- */
.if-navbar {
    background: var(--if-nav-bg);
    border-bottom: 1px solid var(--if-nav-border);
    min-height: var(--if-nav-height);
    z-index: 1030;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    transition: top 0.25s ease;
}
.if-navbar.nav-scroll-hidden {
    top: calc(-1 * var(--if-nav-height) - 4px);
}

.if-navbar .navbar-brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--if-blue-700);
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.if-navbar .navbar-brand:hover {
    color: var(--if-blue-600);
}

.if-navbar .nav-link {
    color: var(--if-gray-600);
    font-weight: 500;
    font-size: 13px;
    padding: 8px 12px !important;
    border-radius: var(--if-radius-sm);
    transition: all 0.15s ease;
}

.if-navbar .nav-link:hover,
.if-navbar .nav-link:focus {
    color: var(--if-blue-600);
    background: var(--if-blue-50);
}

.if-navbar .nav-link.active,
.if-navbar .nav-item.show > .nav-link {
    color: var(--if-blue-700);
    background: var(--if-blue-50);
}

.if-navbar .dropdown-menu {
    border: 1px solid var(--if-gray-200);
    border-radius: var(--if-radius);
    box-shadow: var(--if-card-shadow-lg);
    padding: 6px;
    min-width: 200px;
}

.if-navbar .dropdown-item {
    font-size: 13px;
    padding: 6px 12px;
    border-radius: var(--if-radius-sm);
    color: var(--if-gray-700);
}

.if-navbar .dropdown-item:hover {
    background: var(--if-blue-50);
    color: var(--if-blue-700);
}

.if-navbar .dropdown-header {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--if-gray-400);
    padding: 6px 12px 4px;
}

.if-navbar .dropdown-divider {
    margin: 4px 0;
    border-color: var(--if-gray-100);
}

/* --- Page Layout --- */
.if-page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 24px 48px;
}

/* --- Page Header --- */
.if-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.if-page-header h1,
.if-page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--if-gray-900);
    margin: 0;
    letter-spacing: -0.3px;
}

.if-page-header .if-subtitle,
.if-page-subtitle {
    color: var(--if-gray-500);
    font-size: 13px;
    margin-top: 4px;
    margin-bottom: 0;
}

/* --- Cards --- */
.if-card {
    background: var(--if-card-bg);
    border: 1px solid var(--if-card-border);
    border-radius: var(--if-radius-lg);
    box-shadow: var(--if-card-shadow);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    margin-bottom: 16px;
}

.if-card:hover {
    box-shadow: var(--if-card-shadow-lg);
}

.if-card-clickable:hover {
    transform: translateY(-2px);
    box-shadow: var(--if-card-shadow-lg);
}

.if-card-body,
.if-card .card-body {
    padding: 20px;
}

/* Cards without an explicit body wrapper get padding directly */
.if-card:not(:has(> .if-card-body, > .card-body)) {
    padding: 20px;
}

.if-card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--if-gray-100);
    padding: 14px 20px;
    font-weight: 600;
    font-size: 13px;
    color: var(--if-gray-700);
}

/* --- Stat Cards (KPI row) --- */
.if-stat-card {
    background: var(--if-card-bg);
    border: 1px solid var(--if-card-border);
    border-radius: var(--if-radius-lg);
    padding: 18px 20px;
    box-shadow: var(--if-card-shadow);
}

.if-stat-card .if-stat-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--if-gray-400);
    margin-bottom: 4px;
}

.if-stat-card .if-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--if-gray-900);
    line-height: 1.2;
}

.if-stat-card .if-stat-sub {
    font-size: 12px;
    color: var(--if-gray-500);
    margin-top: 2px;
}

/* Stat card accent variants */
.if-stat-card[data-accent="blue"]   .if-stat-value { color: var(--if-blue-600); }
.if-stat-card[data-accent="green"]  .if-stat-value { color: var(--if-success); }
.if-stat-card[data-accent="red"]    .if-stat-value { color: var(--if-danger); }
.if-stat-card[data-accent="amber"]  .if-stat-value { color: var(--if-warning); }

/* --- Buttons --- */
.if-btn {
    font-size: 13px;
    font-weight: 500;
    padding: 7px 14px;
    border-radius: var(--if-radius-sm);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s ease;
    text-decoration: none;
    line-height: 1.4;
}

.if-btn-primary {
    background: var(--if-blue-600);
    color: #fff;
}
.if-btn-primary:hover {
    background: var(--if-blue-700);
    color: #fff;
}

.if-btn-secondary {
    background: var(--if-gray-100);
    color: var(--if-gray-700);
    border: 1px solid var(--if-gray-200);
}
.if-btn-secondary:hover {
    background: var(--if-gray-200);
    color: var(--if-gray-800);
}

.if-btn-ghost {
    background: transparent;
    color: var(--if-gray-600);
}
.if-btn-ghost:hover {
    background: var(--if-gray-100);
    color: var(--if-gray-800);
}

.if-btn-danger {
    background: var(--if-danger-bg);
    color: var(--if-danger);
    border: 1px solid #fecaca;
}
.if-btn-danger:hover {
    background: #fee2e2;
    color: var(--if-danger);
}

.if-btn-success {
    background: var(--if-success-bg);
    color: var(--if-success);
    border: 1px solid #a7f3d0;
}
.if-btn-success:hover {
    background: #d1fae5;
    color: var(--if-success);
}

.if-btn-sm {
    font-size: 12px;
    padding: 4px 10px;
}

.if-btn-lg {
    font-size: 14px;
    padding: 10px 20px;
}

/* --- Badges --- */
.if-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 100px;
    line-height: 1.4;
    white-space: nowrap;
}

.if-badge-blue    { background: var(--if-blue-100); color: var(--if-blue-700); }
.if-badge-green   { background: var(--if-success-bg); color: var(--if-success); }
.if-badge-red     { background: var(--if-danger-bg); color: var(--if-danger); }
.if-badge-amber   { background: var(--if-warning-bg); color: var(--if-warning); }
.if-badge-gray    { background: var(--if-gray-100); color: var(--if-gray-600); }
.if-badge-indigo  { background: #eef2ff; color: var(--if-indigo-600); }

/* --- Filter Bar --- */
.if-filter-bar {
    background: var(--if-card-bg);
    border: 1px solid var(--if-card-border);
    border-radius: var(--if-radius-lg);
    padding: 14px 18px;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.if-filter-bar .form-select,
.if-filter-bar .form-control {
    font-size: 13px;
    border-radius: var(--if-radius-sm);
    border: 1px solid var(--if-gray-200);
    padding: 6px 12px;
    height: 34px;
    background-color: var(--if-gray-50);
    color: var(--if-gray-700);
}

.if-filter-bar .form-select {
    padding-right: 2.25rem;
}

.if-filter-bar .form-select:focus,
.if-filter-bar .form-control:focus {
    border-color: var(--if-blue-300);
    box-shadow: 0 0 0 3px rgba(26,134,240,.12);
}

.if-filter-bar label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--if-gray-400);
    margin-bottom: 2px;
}

.if-filter-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Filter bar button groups */
.if-filter-bar .btn-group .btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    white-space: nowrap;
}

.if-filter-bar .btn-group-sm .btn {
    padding: 5px 10px;
}

.if-filter-sep {
    width: 1px;
    height: 28px;
    background: var(--if-gray-200);
    flex-shrink: 0;
    align-self: center;
}

/* --- Tables --- */
.if-table {
    width: 100%;
    font-size: 13px;
}

.if-table thead th {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--if-gray-400);
    border-bottom: 1px solid var(--if-gray-200);
    padding: 10px 16px;
    white-space: nowrap;
}

.if-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--if-gray-100);
    vertical-align: middle;
    color: var(--if-gray-700);
}

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

.if-table tbody tr:hover {
    background: var(--if-gray-25);
}

.if-table .if-cell-title {
    font-weight: 600;
    color: var(--if-gray-900);
}

.if-table .if-cell-title a {
    color: var(--if-gray-900);
    text-decoration: none;
}

.if-table .if-cell-title a:hover {
    color: var(--if-blue-600);
}

.if-table .if-cell-meta {
    font-size: 12px;
    color: var(--if-gray-400);
}

/* --- Progress Bars --- */
.if-progress {
    height: 6px;
    background: var(--if-gray-100);
    border-radius: 100px;
    overflow: hidden;
}

.if-progress-bar {
    height: 100%;
    border-radius: 100px;
    transition: width 0.3s ease;
}

.if-progress-bar-blue   { background: var(--if-blue-500); }
.if-progress-bar-green  { background: var(--if-success); }
.if-progress-bar-red    { background: var(--if-danger); }
.if-progress-bar-amber  { background: var(--if-warning); }

/* --- Empty State --- */
.if-empty-state {
    text-align: center;
    padding: 64px 24px;
    color: var(--if-gray-400);
}

.if-empty-state svg,
.if-empty-state .if-empty-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.4;
}

.if-empty-state h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--if-gray-600);
    margin-bottom: 8px;
}

.if-empty-state p {
    font-size: 13px;
    max-width: 400px;
    margin: 0 auto 20px;
}

/* --- Scenario / Perceptron Specific Badges --- */
.if-badge-lifecycle-pending    { background: var(--if-warning-bg); color: var(--if-warning); }
.if-badge-lifecycle-validated  { background: var(--if-success-bg); color: var(--if-success); }
.if-badge-lifecycle-invalidated{ background: var(--if-danger-bg); color: var(--if-danger); }
.if-badge-lifecycle-deprecated { background: var(--if-gray-100); color: var(--if-gray-500); }

.if-badge-relation-reinforcing  { background: var(--if-success-bg); color: var(--if-success); }
.if-badge-relation-contradicting { background: var(--if-danger-bg); color: var(--if-danger); }
.if-badge-relation-validating    { background: var(--if-blue-100); color: var(--if-blue-700); }
.if-badge-relation-invalidating  { background: var(--if-warning-bg); color: var(--if-warning); }

.if-badge-trigger    { background: #eef2ff; color: var(--if-indigo-600); }
.if-badge-continuous { background: var(--if-gray-100); color: var(--if-gray-600); }

/* --- Ticker pills --- */
.if-ticker-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 100px;
    font-family: var(--if-font-mono);
}

.if-ticker-long  { background: var(--if-success-bg); color: var(--if-success); }
.if-ticker-short { background: var(--if-danger-bg); color: var(--if-danger); }

/* --- Section Divider --- */
.if-section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--if-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--if-gray-100);
}

/* Ensure icons inside buttons always have spacing from text */
.btn > i.bi,
.if-btn > i.bi {
    flex-shrink: 0;
}

/* --- List Item Row (for scenario/perceptron list items) --- */
.if-list-item {
    background: var(--if-card-bg);
    border: 1px solid var(--if-card-border);
    border-radius: var(--if-radius-lg);
    padding: 16px 20px;
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.if-list-item:hover {
    border-color: var(--if-blue-200);
    box-shadow: var(--if-card-shadow-lg);
}

.if-list-item .if-list-item-body {
    flex: 1;
    min-width: 0;
}

.if-list-item .if-list-item-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--if-gray-900);
    margin-bottom: 4px;
}

.if-list-item .if-list-item-title a {
    color: inherit;
    text-decoration: none;
}

.if-list-item .if-list-item-title a:hover {
    color: var(--if-blue-600);
}

.if-list-item .if-list-item-desc {
    font-size: 13px;
    color: var(--if-gray-500);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.if-list-item .if-list-item-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    font-size: 12px;
    color: var(--if-gray-400);
    flex-wrap: wrap;
}

.if-list-item .if-list-item-metrics {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.if-metric {
    text-align: center;
}

.if-metric-value {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.2;
}

.if-metric-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--if-gray-400);
}

/* --- Pagination --- */
.if-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 24px;
}

.if-pagination a,
.if-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--if-radius-sm);
    text-decoration: none;
    color: var(--if-gray-600);
    border: 1px solid var(--if-gray-200);
    background: var(--if-card-bg);
    transition: all 0.15s ease;
}

.if-pagination a:hover {
    background: var(--if-blue-50);
    color: var(--if-blue-600);
    border-color: var(--if-blue-200);
}

.if-pagination .active {
    background: var(--if-blue-600);
    color: #fff;
    border-color: var(--if-blue-600);
}

.if-pagination .disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* --- Alert overrides --- */
.alert {
    border-radius: var(--if-radius);
    font-size: 13px;
    border: none;
}

/* --- Markdown content --- */
.markdown-content table {
    width: 100%;
    margin: 1rem 0;
    border-collapse: collapse;
}

.markdown-content table th,
.markdown-content table td {
    padding: 8px 12px;
    border: 1px solid var(--if-gray-200);
    font-size: 13px;
}

.markdown-content table th {
    background: var(--if-gray-50);
    font-weight: 600;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.markdown-content h1:first-child,
.markdown-content h2:first-child,
.markdown-content h3:first-child {
    margin-top: 0;
}

.markdown-content p:empty {
    display: none;
}

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

.modal-header {
    border-bottom: 1px solid var(--if-gray-100);
    padding: 16px 20px;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    border-top: 1px solid var(--if-gray-100);
    padding: 12px 20px;
}

/* --- Form overrides --- */
.form-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--if-gray-600);
}

.form-control,
.form-select {
    font-size: 13px;
    border-radius: var(--if-radius-sm);
    border: 1px solid var(--if-gray-200);
}

.form-select {
    padding-right: 2.25rem;
    background-position: right 0.6rem center;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--if-blue-300);
    box-shadow: 0 0 0 3px rgba(26,134,240,.12);
}

/* Push theme/tools items to the right on desktop in the single-ul navbar */
.if-nav-end { margin-left: auto; }

/* --- Responsive --- */
@media (max-width: 991.98px) {
    /* Mobile navbar collapse needs its own background */
    .if-navbar .navbar-collapse {
        background: var(--if-nav-bg);
        border: 1px solid var(--if-nav-border);
        border-radius: var(--if-radius);
        padding: 12px 16px;
        margin-top: 8px;
        box-shadow: var(--if-card-shadow-lg);
    }
    /* On mobile, no push — stays in natural flow */
    .if-nav-end { margin-left: 0; }
}

@media (max-width: 768px) {
    .if-page {
        padding: 16px;
    }

    .if-page-header {
        flex-direction: column;
    }

    .if-list-item {
        flex-direction: column;
    }

    .if-list-item .if-list-item-metrics {
        width: 100%;
        justify-content: flex-start;
    }

    .if-filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .if-filter-sep {
        display: none;
    }
}

/* --- Utility classes --- */
.if-text-mono  { font-family: var(--if-font-mono); }
.if-text-sm    { font-size: 12px; }
.if-text-xs    { font-size: 11px; }
.if-text-muted { color: var(--if-gray-400); }
.if-gap-8      { gap: 8px; }
.if-gap-12     { gap: 12px; }
.if-gap-16     { gap: 16px; }
.if-mt-0       { margin-top: 0; }
.if-truncate   { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================================
   Sepia Theme — "Financial Times"
   Warm cream backgrounds, serif typography, softer palette optimised for
   comfortable reading over long sessions.
   Applied via data-if-theme="sepia" on <html>.
   ============================================================================ */
[data-if-theme="sepia"] {
    /* Primary palette — Claret / Teal (FT editorial accent) */
    --if-blue-50:  #fdf6f0;
    --if-blue-100: #f5e6d8;
    --if-blue-200: #e4cdb5;
    --if-blue-300: #c49a6c;
    --if-blue-400: #9e2f50;
    --if-blue-500: #8b1538;
    --if-blue-600: #7a1230;
    --if-blue-700: #660f28;
    --if-blue-800: #520c20;
    --if-blue-900: #3d0918;

    /* Accent — Teal (secondary editorial) */
    --if-indigo-500: #0d7680;
    --if-indigo-600: #0a5e66;

    /* Neutrals — warm grays built on cream base */
    --if-gray-25:  #fff9f0;
    --if-gray-50:  #fff1e5;
    --if-gray-100: #f2dfce;
    --if-gray-200: #e6d1be;
    --if-gray-300: #cdb8a1;
    --if-gray-400: #99857a;
    --if-gray-500: #736b65;
    --if-gray-600: #5c544f;
    --if-gray-700: #453e39;
    --if-gray-800: #33302c;
    --if-gray-900: #1a1614;

    /* Semantic — muted tones for sepia context */
    --if-success:     #0a7b3e;
    --if-success-bg:  #e8f5e9;
    --if-danger:      #c03030;
    --if-danger-bg:   #fce8e8;
    --if-warning:     #bf8600;
    --if-warning-bg:  #fff8e1;
    --if-info:        #0d7680;
    --if-info-bg:     #e0f2f1;

    /* Surfaces */
    --if-body-bg:       #fff1e5;
    --if-card-bg:       #fffaf5;
    --if-card-border:   #e6d1be;
    --if-card-shadow:   0 1px 4px rgba(60,40,20,.08);
    --if-card-shadow-lg: 0 4px 16px rgba(60,40,20,.12);

    /* Typography — Serif stack */
    --if-font-sans: 'Lora', 'Georgia', 'Times New Roman', serif;
    --if-font-mono: 'SF Mono', 'Fira Code', 'Cascadia Mono', monospace;
    --if-text-primary:   #33302c;
    --if-text-secondary: #736b65;
    --if-text-muted:     #99857a;

    /* Spacing — slightly softer corners */
    --if-radius-sm: 4px;
    --if-radius:    6px;
    --if-radius-lg: 8px;
    --if-radius-xl: 12px;

    /* Navbar */
    --if-nav-bg: #fffaf5;
    --if-nav-border: #e6d1be;
}

/* Sepia: body & base overrides */
[data-if-theme="sepia"] body {
    font-family: var(--if-font-sans);
    -webkit-font-smoothing: auto;           /* let serif feel natural */
    text-rendering: optimizeLegibility;
    font-size: 14.5px;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

/* Sepia: headings use slightly heavier weight */
[data-if-theme="sepia"] h1,
[data-if-theme="sepia"] h2,
[data-if-theme="sepia"] h3,
[data-if-theme="sepia"] h4,
[data-if-theme="sepia"] h5,
[data-if-theme="sepia"] .if-page-header h1,
[data-if-theme="sepia"] .if-page-title {
    font-family: 'Lora', Georgia, serif;
    letter-spacing: -0.01em;
}

/* Sepia: small UI labels use a sans-serif for clarity */
[data-if-theme="sepia"] .if-stat-card .if-stat-label,
[data-if-theme="sepia"] .if-section-title,
[data-if-theme="sepia"] .if-badge,
[data-if-theme="sepia"] .if-table thead th,
[data-if-theme="sepia"] .if-filter-bar label,
[data-if-theme="sepia"] .if-metric-label,
[data-if-theme="sepia"] .if-text-xs,
[data-if-theme="sepia"] .form-label,
[data-if-theme="sepia"] .dropdown-header {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Sepia: navbar brand accent (claret) */
[data-if-theme="sepia"] .if-navbar .navbar-brand {
    color: var(--if-blue-600);
    font-family: 'Lora', Georgia, serif;
    font-weight: 700;
}

[data-if-theme="sepia"] .if-navbar .navbar-brand:hover {
    color: var(--if-blue-500);
}

/* Sepia: nav link styling */
[data-if-theme="sepia"] .if-navbar .nav-link {
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--if-gray-600);
}

[data-if-theme="sepia"] .if-navbar .nav-link:hover,
[data-if-theme="sepia"] .if-navbar .nav-link:focus {
    color: var(--if-blue-600);
    background: rgba(139,21,56,.06);
}

[data-if-theme="sepia"] .if-navbar .nav-link.active,
[data-if-theme="sepia"] .if-navbar .nav-item.show > .nav-link {
    color: var(--if-blue-600);
    background: rgba(139,21,56,.08);
}

/* Sepia: dropdown menus */
[data-if-theme="sepia"] .if-navbar .dropdown-menu {
    background: var(--if-card-bg);
    border-color: var(--if-card-border);
}

[data-if-theme="sepia"] .if-navbar .dropdown-item {
    color: var(--if-gray-700);
    font-family: 'Inter', -apple-system, sans-serif;
}

[data-if-theme="sepia"] .if-navbar .dropdown-item:hover {
    background: rgba(139,21,56,.06);
    color: var(--if-blue-600);
}

/* Sepia: buttons */
[data-if-theme="sepia"] .if-btn-primary {
    background: var(--if-blue-600);
    color: #fff;
}
[data-if-theme="sepia"] .if-btn-primary:hover {
    background: var(--if-blue-500);
}

[data-if-theme="sepia"] .if-btn-secondary {
    background: var(--if-gray-100);
    border-color: var(--if-gray-200);
    color: var(--if-gray-700);
}
[data-if-theme="sepia"] .if-btn-secondary:hover {
    background: var(--if-gray-200);
    color: var(--if-gray-800);
}

[data-if-theme="sepia"] .if-btn-ghost:hover {
    background: var(--if-gray-100);
}

/* Sepia: badges — slightly warmer tints */
[data-if-theme="sepia"] .if-badge-blue {
    background: rgba(139,21,56,.08);
    color: var(--if-blue-600);
}

[data-if-theme="sepia"] .if-badge-indigo {
    background: rgba(13,118,128,.08);
    color: var(--if-indigo-500);
}

/* Sepia: form controls */
[data-if-theme="sepia"] .form-control,
[data-if-theme="sepia"] .form-select {
    background-color: #fffdf9;
    border-color: var(--if-gray-200);
    color: var(--if-gray-800);
    font-family: 'Inter', -apple-system, sans-serif;
}

[data-if-theme="sepia"] .form-control:focus,
[data-if-theme="sepia"] .form-select:focus {
    border-color: var(--if-blue-400);
    box-shadow: 0 0 0 3px rgba(139,21,56,.10);
}

/* Sepia: filter bar inputs */
[data-if-theme="sepia"] .if-filter-bar .form-select,
[data-if-theme="sepia"] .if-filter-bar .form-control {
    background-color: #fffdf9;
    color: var(--if-gray-700);
}

/* Sepia: table hover */
[data-if-theme="sepia"] .if-table tbody tr:hover {
    background: rgba(139,21,56,.03);
}

/* Sepia: links */
[data-if-theme="sepia"] a {
    color: var(--if-blue-600);
}

[data-if-theme="sepia"] a:hover {
    color: var(--if-blue-500);
}

[data-if-theme="sepia"] .if-table .if-cell-title a {
    color: var(--if-gray-900);
}

[data-if-theme="sepia"] .if-table .if-cell-title a:hover {
    color: var(--if-blue-600);
}

/* Sepia: list item hover accent */
[data-if-theme="sepia"] .if-list-item:hover {
    border-color: rgba(139,21,56,.25);
}

/* Sepia: pagination active */
[data-if-theme="sepia"] .if-pagination .active {
    background: var(--if-blue-600);
    border-color: var(--if-blue-600);
    color: #fff;
}

[data-if-theme="sepia"] .if-pagination a:hover {
    background: rgba(139,21,56,.06);
    color: var(--if-blue-600);
    border-color: rgba(139,21,56,.2);
}

/* Sepia: modal */
[data-if-theme="sepia"] .modal-content {
    background: var(--if-card-bg);
}

[data-if-theme="sepia"] .modal-header,
[data-if-theme="sepia"] .modal-footer {
    border-color: var(--if-gray-200);
}

/* Sepia: alerts */
[data-if-theme="sepia"] .alert-success { background: var(--if-success-bg); color: var(--if-success); }
[data-if-theme="sepia"] .alert-danger  { background: var(--if-danger-bg);  color: var(--if-danger); }
[data-if-theme="sepia"] .alert-warning { background: var(--if-warning-bg); color: var(--if-warning); }
[data-if-theme="sepia"] .alert-info    { background: var(--if-info-bg);    color: var(--if-info); }

/* Sepia: markdown content */
[data-if-theme="sepia"] .markdown-content {
    font-size: 15px;
    line-height: 1.8;
}

[data-if-theme="sepia"] .markdown-content table th {
    background: var(--if-gray-100);
}

[data-if-theme="sepia"] .markdown-content table th,
[data-if-theme="sepia"] .markdown-content table td {
    border-color: var(--if-gray-200);
}

/* Sepia: code blocks */
[data-if-theme="sepia"] pre,
[data-if-theme="sepia"] code {
    background: var(--if-gray-100);
    color: var(--if-gray-800);
    font-family: var(--if-font-mono);
}

/* Sepia: scrollbar — warm tints */
[data-if-theme="sepia"] ::-webkit-scrollbar { width: 8px; height: 8px; }
[data-if-theme="sepia"] ::-webkit-scrollbar-track { background: var(--if-gray-50); }
[data-if-theme="sepia"] ::-webkit-scrollbar-thumb { background: var(--if-gray-300); border-radius: 4px; }
[data-if-theme="sepia"] ::-webkit-scrollbar-thumb:hover { background: var(--if-gray-400); }

/* Sepia: selection */
[data-if-theme="sepia"] ::selection {
    background: rgba(139,21,56,.18);
    color: #1a1614;
}

/* Sepia: stat card value accents — muted to match palette */
[data-if-theme="sepia"] .if-stat-card[data-accent="blue"] .if-stat-value { color: var(--if-blue-600); }

/* Sepia: ticker pills */
[data-if-theme="sepia"] .if-ticker-pill {
    font-family: var(--if-font-mono);
}

/* Sepia: Bootstrap component resets (text, bg-light, table-striped, etc.) */
[data-if-theme="sepia"] .bg-light {
    background-color: var(--if-gray-50) !important;
}

[data-if-theme="sepia"] .text-muted {
    color: var(--if-text-muted) !important;
}

[data-if-theme="sepia"] .table {
    color: var(--if-text-primary);
}

[data-if-theme="sepia"] .table > thead {
    color: var(--if-text-secondary);
}

[data-if-theme="sepia"] .table > :not(caption) > * > * {
    border-bottom-color: var(--if-gray-200);
}

[data-if-theme="sepia"] .card {
    background: var(--if-card-bg);
    border-color: var(--if-card-border);
}


/* ============================================================================
   Dark Mode
   Automatically activated when the user's system uses a dark color scheme.
   Applied via data-bs-theme="dark" on <html> (synced by JS).
   ============================================================================ */
[data-bs-theme="dark"] {
    /* Primary palette — Blue (lighter for dark bg readability) */
    --if-blue-50:  #0d2240;
    --if-blue-100: #0f2d52;
    --if-blue-200: #144072;
    --if-blue-300: #1a5596;
    --if-blue-400: #2d7fd4;
    --if-blue-500: #4a9ef5;
    --if-blue-600: #6bb3f7;
    --if-blue-700: #8dc7f9;
    --if-blue-800: #b0d8fb;
    --if-blue-900: #d4ebfd;

    /* Accent — Indigo */
    --if-indigo-500: #7b79e8;
    --if-indigo-600: #9a98ed;

    /* Neutrals — flipped for dark surfaces & light text */
    --if-gray-25:  #1a1f2b;
    --if-gray-50:  #1e2330;
    --if-gray-100: #252b3a;
    --if-gray-200: #2f3647;
    --if-gray-300: #3d4557;
    --if-gray-400: #6b7588;
    --if-gray-500: #8b95a8;
    --if-gray-600: #a8b1c2;
    --if-gray-700: #c4ccda;
    --if-gray-800: #dce2ec;
    --if-gray-900: #eef1f6;

    /* Semantic — adjusted for dark bg readability */
    --if-success:     #2abd72;
    --if-success-bg:  #0d2a1a;
    --if-danger:      #ef5565;
    --if-danger-bg:   #2a1215;
    --if-warning:     #e9a63a;
    --if-warning-bg:  #2a2010;
    --if-info:        #4a9ef5;
    --if-info-bg:     #0d2240;

    /* Surfaces */
    --if-body-bg:       #13171f;
    --if-card-bg:       #1a1f2b;
    --if-card-border:   #2f3647;
    --if-card-shadow:   0 1px 3px rgba(0,0,0,.25), 0 1px 2px rgba(0,0,0,.18);
    --if-card-shadow-lg: 0 4px 12px rgba(0,0,0,.35);

    /* Typography */
    --if-text-primary:   #eef1f6;
    --if-text-secondary: #8b95a8;
    --if-text-muted:     #6b7588;

    /* Navbar */
    --if-nav-bg: #1a1f2b;
    --if-nav-border: #2f3647;

    /* Bootstrap component overrides not covered by data-bs-theme */
    color-scheme: dark;
}

/* Dark mode: navbar toggler icon */
[data-bs-theme="dark"] .if-navbar .navbar-toggler i {
    color: var(--if-gray-500);
}

/* Dark mode: brand color */
[data-bs-theme="dark"] .if-navbar .navbar-brand {
    color: var(--if-blue-500);
}

/* Dark mode: dropdown menus */
[data-bs-theme="dark"] .if-navbar .dropdown-menu {
    background: var(--if-card-bg);
    border-color: var(--if-card-border);
}

[data-bs-theme="dark"] .if-navbar .dropdown-item {
    color: var(--if-gray-600);
}

[data-bs-theme="dark"] .if-navbar .dropdown-item:hover {
    background: var(--if-blue-50);
    color: var(--if-blue-500);
}

/* Dark mode: form controls */
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: var(--if-gray-50);
    border-color: var(--if-gray-200);
    color: var(--if-gray-800);
}

[data-bs-theme="dark"] .form-control::placeholder {
    color: var(--if-gray-400);
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
    background-color: var(--if-gray-50);
    border-color: var(--if-blue-400);
    color: var(--if-gray-900);
}

/* Dark mode: filter bar inputs */
[data-bs-theme="dark"] .if-filter-bar .form-select,
[data-bs-theme="dark"] .if-filter-bar .form-control {
    background-color: var(--if-gray-100);
    color: var(--if-gray-700);
}

/* Dark mode: modal */
[data-bs-theme="dark"] .modal-content {
    background: var(--if-card-bg);
    box-shadow: 0 20px 60px rgba(0,0,0,.4);
}

[data-bs-theme="dark"] .modal-header,
[data-bs-theme="dark"] .modal-footer {
    border-color: var(--if-gray-200);
}

/* Dark mode: btn-close */
[data-bs-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Dark mode: secondary buttons */
[data-bs-theme="dark"] .if-btn-secondary {
    background: var(--if-gray-100);
    border-color: var(--if-gray-200);
    color: var(--if-gray-700);
}

[data-bs-theme="dark"] .if-btn-secondary:hover {
    background: var(--if-gray-200);
    color: var(--if-gray-800);
}

/* Dark mode: ghost buttons */
[data-bs-theme="dark"] .if-btn-ghost:hover {
    background: var(--if-gray-100);
}

/* Dark mode: markdown content */
[data-bs-theme="dark"] .markdown-content table th {
    background: var(--if-gray-100);
}

[data-bs-theme="dark"] .markdown-content table th,
[data-bs-theme="dark"] .markdown-content table td {
    border-color: var(--if-gray-200);
}

/* Dark mode: alerts */
[data-bs-theme="dark"] .alert-success { background: var(--if-success-bg); color: var(--if-success); border-color: #1a4030; }
[data-bs-theme="dark"] .alert-danger  { background: var(--if-danger-bg);  color: var(--if-danger);  border-color: #3a1a1a; }
[data-bs-theme="dark"] .alert-warning { background: var(--if-warning-bg); color: var(--if-warning); border-color: #3a3010; }
[data-bs-theme="dark"] .alert-info    { background: var(--if-info-bg);    color: var(--if-info);    border-color: #1a3560; }

/* Dark mode: code/pre blocks */
[data-bs-theme="dark"] pre,
[data-bs-theme="dark"] code {
    background: var(--if-gray-100);
    color: var(--if-gray-800);
}

/* Dark mode: table hover & borders */
[data-bs-theme="dark"] .if-table tbody tr:hover {
    background: var(--if-gray-50);
}

/* Dark mode: scrollbar */
[data-bs-theme="dark"] ::-webkit-scrollbar { width: 8px; height: 8px; }
[data-bs-theme="dark"] ::-webkit-scrollbar-track { background: var(--if-gray-50); }
[data-bs-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--if-gray-300); border-radius: 4px; }
[data-bs-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: var(--if-gray-400); }

/* Dark mode: text selection */
[data-bs-theme="dark"] ::selection {
    background: rgba(74,158,245,0.3);
    color: #fff;
}

/* Dark mode: primary buttons — ensure white text on coloured bg */
[data-bs-theme="dark"] .if-btn-primary {
    background: var(--if-blue-500);
    color: #fff;
}
[data-bs-theme="dark"] .if-btn-primary:hover {
    background: var(--if-blue-400);
    color: #fff;
}

/* Dark mode: Bootstrap .btn-primary / .btn-outline-primary overrides */
[data-bs-theme="dark"] .btn-primary {
    --bs-btn-bg: var(--if-blue-500);
    --bs-btn-border-color: var(--if-blue-500);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: var(--if-blue-400);
    --bs-btn-hover-border-color: var(--if-blue-400);
    --bs-btn-hover-color: #fff;
    --bs-btn-active-bg: var(--if-blue-400);
    --bs-btn-active-color: #fff;
}

[data-bs-theme="dark"] .btn-outline-primary {
    --bs-btn-color: var(--if-blue-500);
    --bs-btn-border-color: var(--if-blue-500);
    --bs-btn-hover-bg: var(--if-blue-500);
    --bs-btn-hover-border-color: var(--if-blue-500);
    --bs-btn-hover-color: #fff;
    --bs-btn-active-bg: var(--if-blue-400);
    --bs-btn-active-color: #fff;
}

/* Dark mode: Bootstrap .badge.bg-primary */
[data-bs-theme="dark"] .badge.bg-primary {
    background-color: var(--if-blue-500) !important;
    color: #fff !important;
}

/* Dark mode: Bootstrap .btn-outline-secondary */
[data-bs-theme="dark"] .btn-outline-secondary {
    --bs-btn-color: var(--if-gray-600);
    --bs-btn-border-color: var(--if-gray-300);
    --bs-btn-hover-bg: var(--if-gray-200);
    --bs-btn-hover-color: var(--if-gray-800);
}

/* Dark mode: Bootstrap .btn-warning text contrast fix */
[data-bs-theme="dark"] .btn-warning {
    --bs-btn-color: #fff;
    --bs-btn-hover-color: #fff;
}