:root {
    --bg: #faf9f6; --bg-alt: #f0ede6; --surface: #ffffff; --text: #1a1a1a;
    --text-muted: #6b6560; --accent: #2d6a4f; --accent-light: #40916c; --accent-bg: #d8f3dc;
    --border: #d4cfc7;
    --kingdom-plant: #2d6a4f; --kingdom-fungi: #9b5de5; --kingdom-bacteria: #0077b6;
    --kingdom-unresolved: #aaaaaa; --kingdom-food: #d4a373; --kingdom-animal: #a0522d;
    --kingdom-multi: #6c757d; --kingdom-unknown: #999;
    --radius: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.08);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body { font-family: 'IBM Plex Sans', -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
header { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 0.75rem 1.5rem; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; }
.logo-icon-img { width: 28px; height: 28px; }
.logo-text { font-family: 'DM Serif Display', serif; font-size: 1.4rem; color: var(--text); letter-spacing: 0.05em; }
nav { display: flex; gap: 1.25rem; align-items: center; }
nav a { color: var(--text-muted); font-size: 0.87rem; font-weight: 500; text-decoration: none; transition: color 0.15s; }
nav a:hover { color: var(--accent); text-decoration: none; }
.nav-api { font-family: 'IBM Plex Mono', monospace; font-size: 0.8rem; background: var(--bg-alt); padding: 0.2rem 0.5rem; border-radius: var(--radius); }

/* Main */
main { max-width: 1200px; margin: 0 auto; padding: 2rem 1.5rem; flex: 1; width: 100%; }

/* Hero */
.hero { text-align: center; padding: 3rem 0 2.5rem; }
.hero h1 { font-family: 'DM Serif Display', serif; font-size: 2.8rem; font-weight: 400; margin-bottom: 0.75rem; letter-spacing: 0.02em; display: flex; align-items: center; justify-content: center; gap: 0.5rem; }
.hero-logo { height: 4.2rem; width: auto; }
.hero .subtitle { color: var(--text-muted); font-size: 1.05rem; font-weight: 300; max-width: 700px; margin: 0 auto 2rem; }
.stat-row { display: flex; justify-content: center; gap: 2.5rem; margin: 2rem 0; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-num { font-family: 'DM Serif Display', serif; font-size: 2rem; color: var(--accent); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

a.stat-item { text-decoration: none; color: inherit; transition: transform 0.15s; }
a.stat-item:hover { transform: translateY(-2px); text-decoration: none; }

/* Search */
.search-box { max-width: 750px; margin: 2rem auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); }
.search-form { display: flex; gap: 0.5rem; align-items: stretch; flex-wrap: wrap; }
.search-form select { font-family: inherit; font-size: 0.87rem; padding: 0.6rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); color: var(--text); cursor: pointer; }
.search-input-wrap { flex: 1; min-width: 200px; position: relative; }
.search-form input[type="text"] { width: 100%; font-family: 'IBM Plex Mono', monospace; font-size: 0.87rem; padding: 0.6rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); outline: none; transition: border-color 0.15s; }
.search-form input[type="text"]:focus { border-color: var(--accent); }
.search-form button { font-family: inherit; font-size: 0.87rem; font-weight: 600; padding: 0.6rem 1.25rem; background: var(--accent); color: #fff; border: none; border-radius: var(--radius); cursor: pointer; transition: background 0.15s; }
.search-form button:hover { background: var(--accent-light); }
.search-hint { text-align: center; margin-top: 0.75rem; font-size: 0.82rem; color: var(--text-muted); }
.search-hint a { color: var(--accent); }
.hint-key { display: inline-block; font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; background: var(--bg-alt); border: 1px solid var(--border); padding: 0 0.35rem; border-radius: 3px; }

/* Autocomplete */
.autocomplete-list { position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border: 1px solid var(--border); border-top: none; border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow-lg); z-index: 200; max-height: 300px; overflow-y: auto; }
.ac-item { padding: 0.5rem 0.75rem; font-size: 0.87rem; cursor: pointer; border-bottom: 1px solid var(--bg-alt); }
.ac-item:hover { background: var(--accent-bg); }

/* Section titles */
.section-title { font-family: 'DM Serif Display', serif; font-size: 1.5rem; margin: 2rem 0 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.card-title { font-family: 'DM Serif Display', serif; font-size: 1.1rem; margin-bottom: 0.75rem; }
.results-info { margin: 1rem 0; color: var(--text-muted); font-size: 0.87rem; }
.no-results { margin: 2rem 0; text-align: center; color: var(--text-muted); }

/* Kingdom badges */
.badge { display: inline-block; font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; padding: 0.15rem 0.5rem; border-radius: 3px; color: #fff; }
.badge-plant { background: var(--kingdom-plant); }
.badge-fungi { background: var(--kingdom-fungi); }
.badge-bacteria { background: var(--kingdom-bacteria); }
.badge-food { background: var(--kingdom-food); }
.badge-animal { background: var(--kingdom-animal); }
.badge-multi { background: var(--kingdom-multi); }
.badge-unknown, .badge-unresolved { background: var(--kingdom-unknown); }

/* License badges */
.license-badge { display: inline-block; font-size: 0.68rem; font-weight: 600; padding: 0.12rem 0.4rem; border-radius: 3px; font-family: 'IBM Plex Mono', monospace; }
.license-open { background: #d8f3dc; color: #1b4332; }
.license-nc { background: #ffe8cc; color: #7c4700; }

/* Source chips */
.source-chip { display: inline-block; font-size: 0.75rem; padding: 0.15rem 0.5rem; margin: 0.1rem 0.2rem; border-radius: 3px; background: var(--bg-alt); border: 1px solid var(--border); color: var(--text-muted); }
.source-primary { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); font-weight: 600; }

/* Sort headers */
.sort-header { color: var(--text-muted); text-decoration: none; font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; white-space: nowrap; cursor: pointer; transition: color 0.15s; }
.sort-header:hover { color: var(--accent); text-decoration: none; }
.sort-active { color: var(--accent); }

/* Results table */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1rem 0; }
.results-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.results-table th { text-align: left; padding: 0.6rem 0.75rem; font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); border-bottom: 2px solid var(--border); background: var(--bg-alt); white-space: nowrap; }
.results-table td { padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.results-table tr:hover { background: var(--accent-bg); }
.organism-cell { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.8rem; }

/* Structure rendering */
.structure-container { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 0.75rem; text-align: center; min-height: 200px; }
.structure-container canvas { max-width: 100%; }
.smi-thumb { vertical-align: middle; }

/* Compound detail */
.back-link { margin-bottom: 1rem; }
.back-link a { font-size: 0.85rem; color: var(--text-muted); }
.compound-header { margin-bottom: 1.5rem; }
.compound-header h1 { font-family: 'DM Serif Display', serif; font-size: 1.8rem; margin-bottom: 0.25rem; }
.compound-id { font-family: 'IBM Plex Mono', monospace; font-size: 0.85rem; color: var(--text-muted); }
.compound-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 1.5rem 0; }
.prop-table { width: 100%; font-size: 0.85rem; }
.prop-table th { text-align: left; padding: 0.4rem 0.5rem; color: var(--text-muted); font-weight: 500; width: 40%; border-bottom: 1px solid var(--bg-alt); }
.prop-table td { padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--bg-alt); font-family: 'IBM Plex Mono', monospace; font-size: 0.82rem; }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin: 1.5rem 0; font-size: 0.87rem; flex-wrap: wrap; }
.pagination a, .pagination span { padding: 0.35rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-muted); }
.pagination a:hover { background: var(--accent-bg); text-decoration: none; }
.pagination .current { background: var(--accent); color: #fff; border-color: var(--accent); }
.pagination .info { border: none; color: var(--text-muted); font-size: 0.8rem; }
.per-page-select { font-family: inherit; font-size: 0.78rem; padding: 0.3rem 0.4rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); color: var(--text-muted); cursor: pointer; }
.export-btn { display: inline-block; padding: 0.3rem 0.6rem; font-size: 0.75rem; font-weight: 600; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text-muted); font-family: 'IBM Plex Mono', monospace; }
.export-btn:hover { background: var(--accent-bg); text-decoration: none; }

/* Checkbox */
.checkbox-label { display: flex; align-items: center; gap: 0.3rem; font-size: 0.87rem; white-space: nowrap; cursor: pointer; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 1.5rem; margin: 1.5rem 0; }
.bar-chart { margin: 0.75rem 0; }
.bar-row { display: flex; align-items: center; gap: 0.5rem; margin: 0.3rem 0; font-size: 0.82rem; }
.bar-label { width: 140px; text-align: right; flex-shrink: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-label a { color: var(--text); text-decoration: none; }
.bar-label a:hover { color: var(--accent); }
.bar-track { flex: 1; height: 20px; background: var(--bg-alt); border-radius: 3px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 3px; transition: width 0.3s ease; background: var(--accent); }
.bar-value { width: 80px; font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; color: var(--text-muted); }

/* Kingdom chips on home */
.kingdoms-row { display: flex; justify-content: center; gap: 1rem; margin: 1rem 0; flex-wrap: wrap; }
.kingdom-chip { display: flex; align-items: center; gap: 0.4rem; padding: 0.35rem 0.8rem; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; font-size: 0.82rem; color: var(--text); text-decoration: none; transition: box-shadow 0.15s; }
.kingdom-chip:hover { box-shadow: var(--shadow-lg); text-decoration: none; }
.kingdom-dot { width: 8px; height: 8px; border-radius: 50%; }

/* Download */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.download-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; text-align: center; }
.download-card h3 { margin-bottom: 0.5rem; }
.download-card .size { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1rem; }

/* Buttons */
.btn { display: inline-block; padding: 0.5rem 1.5rem; background: var(--accent); color: #fff; border-radius: var(--radius); font-weight: 600; font-size: 0.87rem; transition: background 0.15s; margin-right: 0.5rem; margin-bottom: 0.4rem; }
.btn:hover { background: var(--accent-light); text-decoration: none; }
.btn-pubchem { background: #0077b6; }
.btn-pubchem:hover { background: #005f8a; }
.btn-coconut { background: var(--kingdom-plant); }
.btn-api { background: var(--text-muted); font-family: 'IBM Plex Mono', monospace; font-size: 0.8rem; }
.btn-chebi { background: #3a5a80; }
.btn-chebi:hover { background: #2a4560; }

/* Help */
.help-content { max-width: 800px; }
.help-content h2 { font-family: 'DM Serif Display', serif; font-size: 1.3rem; margin: 2rem 0 0.75rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.help-content h2:first-child { border-top: none; padding-top: 0; }
.help-content p { margin: 0.5rem 0; }
.help-content code { font-family: 'IBM Plex Mono', monospace; font-size: 0.85rem; background: var(--bg-alt); padding: 0.15rem 0.4rem; border-radius: 3px; }
.help-content pre { background: var(--bg-alt); padding: 1rem; border-radius: var(--radius); overflow-x: auto; font-family: 'IBM Plex Mono', monospace; font-size: 0.82rem; margin: 0.75rem 0; }

/* Footer */
footer { background: var(--surface); border-top: 1px solid var(--border); margin-top: auto; padding: 1.5rem; font-size: 0.82rem; color: var(--text-muted); }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; }
.footer-right { text-align: right; }
.footer-license { font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; }

/* Responsive */
@media (max-width: 768px) {
    .header-inner { flex-direction: column; gap: 0.5rem; }
    nav { flex-wrap: wrap; justify-content: center; gap: 0.75rem; }
    .hero h1 { font-size: 2rem; }
    .search-form { flex-direction: column; }
    .search-input-wrap { min-width: unset; }
    .compound-grid { grid-template-columns: 1fr; }
    .stat-row { gap: 1.5rem; }
    .footer-inner { flex-direction: column; }
    .footer-right { text-align: left; }
    .results-table { min-width: 700px; }
}

/* ADMET */
.admet-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.admet-filter label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.3rem; }
.admet-filter input { border: 1px solid var(--border); border-radius: var(--radius); font-family: 'IBM Plex Mono', monospace; }

/* Search submenu */
.search-submenu { position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow-lg); z-index: 200; max-height: 250px; overflow-y: auto; }
.submenu-item { padding: 0.4rem 0.75rem; font-size: 0.82rem; cursor: pointer; border-bottom: 1px solid var(--bg-alt); }
.submenu-item:hover { background: var(--accent-bg); color: var(--accent); }

/* Multi-filter search */
.search-row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; width: 100%; }
.extra-filter { margin-top: 0.5rem; }
.and-label { font-size: 0.78rem; font-weight: 600; color: var(--accent); min-width: 30px; }
.search-actions { display: flex; gap: 0.75rem; align-items: center; margin-top: 0.75rem; width: 100%; }
.add-filter-link { font-size: 0.82rem; color: var(--accent); }

/* Property range inputs */
.range-input { display: flex; align-items: center; gap: 0.3rem; }
.range-input input[type="number"] { width: 80px; font-family: 'IBM Plex Mono', monospace; font-size: 0.82rem; padding: 0.4rem; border: 1px solid var(--border); border-radius: var(--radius); }
.prop-subselect { font-family: inherit; font-size: 0.82rem; padding: 0.4rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); max-width: 280px; }

/* Hero golden glow behind title */
.hero-glow {
    position: absolute;
    top: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 594px;
    height: 158px;
    background: url('/static/title_background.png') center center no-repeat;
    background-size: contain;
    opacity: 0.38;
    pointer-events: none;
    z-index: 0;
}
.hero h1 { position: relative; z-index: 1; }
.hero .subtitle { position: relative; z-index: 1; }
.hero .stat-row { position: relative; z-index: 1; }
.hero .kingdoms-row { position: relative; z-index: 1; }

/* Hero row: title + linear-tree + map + sunburst donut.
   Below 1100px the row wraps; we keep the title on its own first line
   and the three widgets share the second line. */
@media (max-width: 1100px) {
    .hero-row { justify-content: flex-start !important; gap: 1rem !important; }
    .hero-row .section-title { width: 100%; }
    .linear-tree-thumb-wrap { width: 220px !important; }
    #region-map { width: 320px !important; height: 160px !important; }
}
@media (max-width: 720px) {
    .hero-row { gap: 0.75rem !important; }
    .linear-tree-thumb-wrap, #region-map, .kingdom-thumb-wrap { width: 100% !important; max-width: 100% !important; }
    #region-map { height: 200px !important; }
}