/* MultiVector Encoder — theme #000000 / #CB2957 / #DDDDDD / #EEEEEE */

:root {
    --bg: #000000;
    --bg-card: #0d0d0d;
    --bg-elevated: #15151a;
    --text: #EEEEEE;
    --text-secondary: #DDDDDD;
    --text-muted: #9a9a9a;
    --accent: #CB2957;
    --accent-soft: #b0234a;
    --accent-glow: rgba(203, 41, 87, 0.35);
    --accent-faint: rgba(203, 41, 87, 0.12);
    --border: #232323;
    --green: #4cd964;
    --amber: #ffd166;
    --radius: 12px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --mono: 'SF Mono', 'JetBrains Mono', Consolas, Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background-color: var(--bg);
    background-image:
        radial-gradient(ellipse 60% 40% at 50% -10%, rgba(203, 41, 87, 0.10), transparent 60%),
        radial-gradient(ellipse 40% 30% at 100% 20%, rgba(203, 41, 87, 0.05), transparent 60%);
    color: var(--text);
    line-height: 1.65;
    min-height: 100vh;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

code {
    font-family: var(--mono);
    font-size: 0.9em;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 5px;
    color: var(--text-secondary);
}
code.query { color: var(--accent); border-color: var(--accent); }

.accent-strong { color: var(--accent); font-weight: 700; }

/* ---------- Header ---------- */
.header {
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, #0d0d0d 0%, #16080c 100%);
    position: sticky;
    top: 0;
    z-index: 50;
}
.header-inner { display: flex; align-items: center; gap: 16px; padding-top: 20px; padding-bottom: 14px; }
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; }

.brand-glyph {
    display: grid;
    grid-template-columns: repeat(3, 7px);
    grid-template-rows: repeat(3, 7px);
    gap: 2px;
    padding: 5px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
}
.brand-glyph .cell { background: #333; border-radius: 1.5px; }
.brand-glyph .cell.hl { background: var(--accent); box-shadow: 0 0 6px var(--accent-glow); }

.logo { font-size: 1.45rem; font-weight: 800; color: var(--accent); letter-spacing: -0.5px; line-height: 1.1; }
.tagline { font-size: 0.82rem; color: var(--text-muted); font-weight: 400; }

.nav { display: flex; gap: 4px; flex-wrap: wrap; padding-bottom: 10px; }
.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 20px;
    transition: all 0.2s ease;
}
.nav-link:hover { color: var(--text); background: var(--bg-elevated); }

/* ---------- Sections ---------- */
.main { padding: 48px 0 72px; }
.section { margin-bottom: 96px; scroll-margin-top: 140px; }
.section-title {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
    display: flex;
    align-items: baseline;
    gap: 14px;
}
.section-title .num { color: var(--accent); font-size: 1rem; font-weight: 700; opacity: 0.8; }
.lede { font-size: 1.02rem; color: var(--text-secondary); max-width: 900px; margin-bottom: 26px; }
.lede strong { color: var(--text); }

/* ---------- Concept: compare cards ---------- */
.compare-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .compare-grid { grid-template-columns: 1fr; } }

.compare-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 22px;
    transition: all 0.3s ease;
}
.compare-card:hover { transform: translateY(-3px); border-color: #3a3a3a; box-shadow: 0 10px 30px rgba(0,0,0,.5); }
.compare-card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-faint), 0 10px 30px rgba(0,0,0,.5); }
.tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--accent);
    background: var(--accent-faint);
    padding: 4px 10px;
    border-radius: 20px;
    margin-bottom: 12px;
}
.compare-card h3 { font-size: 1.1rem; margin-bottom: 14px; }
.cap { font-size: 0.88rem; color: var(--text-muted); }
.cap strong { color: var(--text-secondary); }

.vector-demo {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-elevated);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.tokens { display: flex; flex-wrap: wrap; gap: 5px; min-width: 0; }
.tokens.little span {
    font-size: 0.72rem;
    padding: 3px 7px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 5px;
    color: var(--text-secondary);
}
.arrow { color: var(--accent); font-weight: 700; }
.vec { display: flex; gap: 4px; }
.vec .v { width: 16px; height: 16px; background: var(--accent); opacity: .75; border-radius: 3px; }
.vec.col { flex-direction: column; }
.vec.single .v { background: var(--text-muted); }
.two { display: flex; gap: 6px; font-size: .72rem; }
.two span { background: var(--bg-card); border: 1px solid var(--border); padding: 3px 7px; border-radius: 5px; color: var(--text-secondary); }

/* ---------- Formula ---------- */
.formula {
    font-family: var(--mono);
    font-size: 1.15rem;
    text-align: center;
    color: var(--text);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 28px;
    overflow-x: auto;
    white-space: nowrap;
}
.formula .op { color: var(--accent); font-size: 1.3rem; }
.formula sub { font-size: 0.6rem; }

/* ---------- MaxSim Lab ---------- */
.lab { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.lab-controls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.lab-label { font-size: 0.85rem; color: var(--text-muted); font-weight: 600; }
.doc-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.doc-chip {
    padding: 8px 14px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    max-width: 300px;
    text-align: left;
}
.doc-chip:hover { border-color: var(--accent); color: var(--text); }
.doc-chip.active { background: var(--accent-faint); border-color: var(--accent); color: var(--text); }

.lab-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; }
@media (max-width: 860px) { .lab-grid { grid-template-columns: 1fr; } }
.panel-title { font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; color: var(--text-muted); margin-bottom: 12px; }

.heatmap-scroll { overflow-x: auto; }
.heatmap { display: grid; gap: 3px; min-width: 320px; }
.hm-row { display: contents; }
.hm-label { font-size: 0.72rem; color: var(--text-secondary); align-self: center; white-space: nowrap; padding-right: 6px; transform: translateX(-30px); }
.hm-cell {
    height: 30px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.62rem;
    color: rgba(255,255,255,0.0);
    font-family: var(--mono);
    transition: transform 0.15s ease;
    cursor: default;
}
.hm-col-label { font-size: 0.72rem; color: var(--text-muted); text-align: center; font-weight: 600; }

.maxsim-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.ms-row {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-elevated);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.85rem;
}
.ms-q { color: var(--text); font-weight: 600; min-width: 70px; }
.ms-to { color: var(--text-muted); }
.ms-d { color: var(--accent); font-weight: 700; min-width: 40px; }
.ms-score { margin-left: auto; font-family: var(--mono); font-weight: 700; color: var(--green); }
.total {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--accent);
    background: var(--accent-faint);
    border-radius: 10px;
    padding: 12px 16px;
    text-align: center;
}
.meanmax { font-size: 0.85rem; color: var(--text-muted); text-align: center; margin-top: 10px; }

.hint { font-size: 0.82rem; color: var(--text-muted); margin-top: 12px; }
.hint.center { text-align: center; }
#heatmapHint { margin-top: 14px; }

/* ---------- Search results ---------- */
.search-results { display: flex; flex-direction: column; gap: 12px; }
.sr {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 20px;
    transition: all 0.2s ease;
}
.sr.first { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-faint); }
.sr-rank { font-size: 1.3rem; font-weight: 800; color: var(--text-muted); width: 44px; text-align: center; }
.sr.first .sr-rank { color: var(--accent); }
.sr-body { flex: 1; }
.sr-text { font-size: 0.95rem; color: var(--text); }
.sr-desc { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }
.sr-score { text-align: right; min-width: 130px; }
.sr-score .n { font-family: var(--mono); font-size: 1.15rem; font-weight: 800; color: var(--green); }
.sr-score .lbl { font-size: 0.7rem; color: var(--text-muted); }
.sr-bar { height: 4px; background: var(--bg-elevated); border-radius: 2px; margin-top: 6px; overflow: hidden; }
.sr-bar .fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-soft)); border-radius: 2px; }

/* ---------- Alignment ---------- */
.two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 880px) { .two-col { grid-template-columns: 1fr; } }
.align-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.align-grid { display: flex; gap: 8px; margin-bottom: 16px; }
.align-set { flex: 1; }
.align-set h5 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin-bottom: 10px; }
.align-tok {
    display: block;
    text-align: center;
    font-size: 0.85rem;
    padding: 6px;
    border-radius: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    margin-bottom: 5px;
    position: relative;
}
.align-tok q { font-style: italic; }
.align-tok.hlq { color: var(--accent); border-color: var(--accent); font-weight: 700; }
.align-tok.hld { color: var(--green); border-color: var(--green); font-weight: 700; }
.align-link {
    text-align: center;
    margin: 4px 0 0;
    font-size: 0.82rem;
    color: var(--text-muted);
    padding: 8px;
    background: var(--accent-faint);
    border-radius: 8px;
}
.align-link b { color: var(--accent); font-size: 1rem; }

/* ---------- Cost ---------- */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.cost-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 28px; }
@media (max-width: 880px) { .cost-grid { grid-template-columns: 1fr; } }
table { width: 100%; border-collapse: collapse; }
.cost-table th, .cost-table td, .model-table th, .model-table td { text-align: left; padding: 10px 12px; font-size: 0.85rem; border-bottom: 1px solid var(--border); }
.cost-table th, .model-table th { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: .5px; }
.cost-table td { color: var(--text-secondary); }
.cost-table td.mv { color: var(--accent); font-weight: 700; }
.cost-table td mb { font-family: var(--mono); }

.metric-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .metric-strip { grid-template-columns: 1fr; } }
.metric-strip .metric-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.mc-title { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin-bottom: 16px; }
.mc-bars { display: flex; flex-direction: column; gap: 12px; margin-bottom: 12px; }
.mc-row { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; }
.mc-row span { min-width: 70px; color: var(--text-secondary); }
.bar-track { flex: 1; height: 10px; background: var(--bg-elevated); border-radius: 5px; overflow: hidden; }
.bar { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-soft)); border-radius: 5px; transition: width 0.8s ease; }
.bar.dense { background: linear-gradient(90deg, var(--text-muted), #777); }
.mc-row b { font-family: var(--mono); color: var(--green); }
.ticks { list-style: none; }
.ticks li { font-size: 0.85rem; color: var(--text-secondary); padding-left: 18px; position: relative; margin-bottom: 10px; }
.ticks li::before { content: '›'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.ticks li strong { color: var(--text); }

/* ---------- Pipeline ---------- */
.pipeline { display: flex; align-items: stretch; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.pipe-stage {
    flex: 1;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    text-align: center;
}
.pipe-stage:hover { border-color: var(--accent); }
.pipe-icon { font-size: 1.6rem; display: block; margin-bottom: 8px; }
.pipe-stage h4 { font-size: 0.92rem; margin-bottom: 8px; color: var(--text); }
.pipe-stage p { font-size: 0.82rem; color: var(--text-muted); }
.pipe-arrow { align-self: center; color: var(--accent); font-weight: 700; font-size: 1.4rem; }
@media (max-width: 760px) { .pipe-arrow { transform: rotate(90deg); } }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }
.tab-btn {
    padding: 9px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}
.tab-btn:hover { color: var(--text); border-color: var(--accent); }
.tab-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.filter-row { margin-bottom: 16px; }
.filter {
    width: 100%;
    max-width: 420px;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
}
.filter:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }

.table-card { padding: 10px 12px; }
.model-table { margin-bottom: 8px; }
.model-table td { color: var(--text-secondary); }
.model-table td.id { font-family: var(--mono); font-size: 0.82rem; color: var(--text); }
.model-table tr:hover td { background: var(--bg-elevated); }
.nowrap { white-space: nowrap; }
.score-pos { color: var(--green); font-family: var(--mono); }
.score-na { color: var(--text-muted); }
.rank-badge { color: var(--accent); font-weight: 700; }

/* ---------- Code ---------- */
.code-block {
    display: none;
    background: #0a0a0d;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 12px;
    padding: 22px 24px;
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 0.85rem;
    line-height: 1.7;
    color: #d6d6dc;
}
.code-block.active { display: block; }
.code-block .c { color: #6a6a76; font-style: italic; }
.code-block .k { color: var(--accent); font-weight: 600; }
.code-block .s { color: #7ae08a; }
.code-block .f { color: #7ab7ff; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer p { font-size: 0.82rem; color: var(--text-muted); }
.foot-note { margin-top: 6px; }

/* ---------- Responsive ---------- */
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .header-inner { padding-top: 16px; }
    .logo { font-size: 1.2rem; }
    .section-title { font-size: 1.35rem; gap: 10px; }
    .section { margin-bottom: 72px; }
    .main { padding-top: 32px; }
}