/* === Theme Variables (Dark Default + Light Mode + System Preference) === */
:root, [data-theme="dark"] {
    --bg: #0f172a;
    --card: #1e293b;
    --card-hover: #26354d;
    --band-odd: rgba(30, 41, 59, 0.55);
    --band-even: #131c31;
    --row-even: rgba(255, 255, 255, 0.028);
    --row-hover: rgba(56, 189, 248, 0.085);
    --border: #334155;
    --text: #f1f5f9;
    --heading: #f8fafc;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --accent-soft: rgba(56, 189, 248, 0.14);
    --green: #4ade80;
    --amber: #fbbf24;
    --rose: #fb7185;
    --purple: #c084fc;
    --input-bg: #0f172a;
}
[data-theme="light"] {
    --bg: #f8fafc;
    --card: #ffffff;
    --card-hover: #f1f5f9;
    --band-odd: #ffffff;
    --band-even: #eeeeee;
    --row-even: rgba(15, 23, 42, 0.035);
    --row-hover: rgba(2, 132, 199, 0.085);
    --border: #cbd5e1;
    --text: #0f172a;
    --heading: #020617;
    --muted: #475569;
    --accent: #0284c7;
    --accent-soft: rgba(2, 132, 199, 0.12);
    --green: #16a34a;
    --amber: #d97706;
    --rose: #e11d48;
    --purple: #7e22ce;
    --input-bg: #ffffff;
}
/* Alternating Full-Width Band Containers for Multi-Table Sections */
.trivia-band {
    padding: 20px 22px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background-color: var(--band-odd);
    margin-bottom: 20px;
}
.trivia-band:nth-of-type(even) {
    background-color: var(--band-even);
}
[data-theme="light"] .trivia-band:nth-of-type(even) table.lb-table {
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
/* Subtle Alternating Backgrounds (Zebra-Striping) for Reading Place-Keeping */
table tbody tr:nth-child(even) td {
    background-color: var(--row-even);
}
table tbody tr:hover td {
    background-color: var(--row-hover) !important;
}
table tbody tr:hover td:first-child {
    box-shadow: inset 3px 0 0 var(--accent);
}
ul.cat-list {
    list-style: none !important;
    padding-left: 0 !important;
}
ul.cat-list li, ul.series-parts-list li {
    padding: 5px 9px;
    border-radius: 6px;
    transition: background-color 0.1s;
}
ul.cat-list li:nth-child(even), ul.series-parts-list li:nth-child(even) {
    background-color: var(--row-even);
}
ul.cat-list li:hover, ul.series-parts-list li:hover {
    background-color: var(--row-hover);
}
/* Light-mode overrides for hardcoded inline dark colors */
[data-theme="light"] .kpi-val,
[data-theme="light"] .gkpi-val,
[data-theme="light"] .cat-title,
[data-theme="light"] .story-link {
    color: var(--heading) !important;
}
[data-theme="light"] .hero {
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%) !important;
}
[data-theme="light"] .search-input,
[data-theme="light"] .filter-input,
[data-theme="light"] .visit-date-input {
    background: var(--input-bg) !important;
    color: var(--text) !important;
}
[data-theme="light"] .cat-tag {
    background: rgba(2, 132, 199, 0.12) !important;
    color: #0369a1 !important;
}
[data-theme="light"] .kw-tag {
    background: rgba(126, 34, 206, 0.12) !important;
    color: #6b21a8 !important;
}
[data-theme="light"] .mini-tag {
    background: rgba(2, 132, 199, 0.12) !important;
    color: #0369a1 !important;
}
[data-theme="light"] .mini-tag.kw {
    background: rgba(126, 34, 206, 0.12) !important;
    color: #6b21a8 !important;
}
[data-theme="light"] .author-kpis {
    color: #334155 !important;
}
/* Theme Switcher Pill Group */
.theme-switcher {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 3px;
}
.theme-btn {
    border: none;
    background: transparent;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 9px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.12s;
}
.theme-btn:hover {
    color: var(--text);
}
.theme-btn.active {
    background: var(--accent);
    color: #0f172a;
    font-weight: 700;
}
.sort-pill-group {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
}
.sort-pill {
    padding: 6px 12px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
}
.sort-pill.active, .sort-pill:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}
/* === Interactive Product Tour & About/Data Guide Modal === */
.nav-util-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 11px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.14s;
}
.nav-util-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
}
.mission-banner {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.10) 0%, rgba(192, 132, 252, 0.08) 100%);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 12px;
    padding: 14px 18px;
    margin-bottom: 20px;
    font-size: 13.5px;
}
.mission-banner summary {
    cursor: pointer;
    font-weight: 700;
    font-size: 14.5px;
    color: var(--heading);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    list-style: none;
}
.mission-banner summary::-webkit-details-marker { display: none; }
.mission-banner summary::after {
    content: "Read Guide & Data Legend ▾";
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    white-space: nowrap;
}
.mission-banner[open] summary {
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.mission-banner[open] summary::after {
    content: "Hide Guide ▴";
}
.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 14px;
}
.guide-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
    line-height: 1.55;
}
.guide-card h4 {
    margin: 0 0 8px;
    font-size: 14px;
    color: var(--accent);
}
.guide-card ul {
    margin: 0;
    padding-left: 17px;
    font-size: 13px;
}
.guide-card li { margin-bottom: 5px; }
#fm-tour-overlay {
    position: fixed;
    inset: 0;
    z-index: 99990;
    pointer-events: none;
    display: none;
}
#fm-tour-overlay.active {
    display: block;
}
#fm-tour-spotlight {
    position: fixed;
    z-index: 99991;
    border-radius: 12px;
    box-shadow: 0 0 0 9999px rgba(2, 6, 23, 0.76), 0 0 0 3px var(--accent), 0 0 28px rgba(56, 189, 248, 0.55);
    transition: top 0.28s cubic-bezier(0.22, 1, 0.36, 1), left 0.28s cubic-bezier(0.22, 1, 0.36, 1), width 0.28s cubic-bezier(0.22, 1, 0.36, 1), height 0.28s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
}
#fm-tour-popover {
    position: fixed;
    z-index: 99995;
    width: min(500px, calc(100vw - 28px));
    background: var(--card);
    color: var(--text);
    border: 2px solid var(--accent);
    border-radius: 14px;
    box-shadow: 0 22px 50px rgba(0, 0, 0, 0.65);
    padding: 20px 22px 16px;
    pointer-events: auto;
    transition: top 0.26s cubic-bezier(0.22, 1, 0.36, 1), left 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}
.fm-tour-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.fm-tour-step-badge {
    font-size: 11.5px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 3px 9px;
    border-radius: 99px;
    background: var(--accent-soft);
    color: var(--accent);
}
.fm-tour-close {
    border: none;
    background: transparent;
    color: var(--muted);
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
    padding: 2px 6px;
    border-radius: 6px;
}
.fm-tour-close:hover { color: var(--text); background: var(--row-hover); }
.fm-tour-title {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 800;
    color: var(--heading);
}
.fm-tour-body {
    font-size: 13.5px;
    line-height: 1.58;
    color: var(--text);
    margin-bottom: 14px;
}
.fm-tour-body ul {
    margin: 6px 0 0 18px;
    padding: 0;
}
.fm-tour-body li { margin-bottom: 5px; }
.fm-tour-dots {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-bottom: 12px;
}
.fm-tour-dot {
    width: 8px;
    height: 8px;
    border-radius: 99px;
    background: var(--border);
    cursor: pointer;
    transition: all 0.15s;
}
.fm-tour-dot.active {
    width: 22px;
    background: var(--accent);
}
.fm-tour-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}
.fm-tour-dontshow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    color: var(--muted);
    cursor: pointer;
    user-select: none;
}
.fm-tour-dontshow input {
    cursor: pointer;
    accent-color: var(--accent);
    width: 15px;
    height: 15px;
}
.fm-tour-btns {
    display: flex;
    gap: 8px;
    align-items: center;
}
.fm-tour-btn {
    padding: 7px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--card-hover);
    color: var(--text);
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
}
.fm-tour-btn:hover { border-color: var(--accent); }
.fm-tour-btn.primary {
    background: var(--accent);
    color: #0f172a;
    border-color: var(--accent);
}
#fm-guide-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 99985;
    background: rgba(2, 6, 23, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
#fm-guide-modal-backdrop.active {
    display: flex;
}
.fm-guide-modal {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--accent);
    border-radius: 16px;
    max-width: 1020px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    padding: 24px 28px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.65);
}