:root {
  color-scheme: dark;
  --bg: #070b14;
  --panel: #101827;
  --panel-2: #151f32;
  --panel-3: #0d1524;
  --text: #edf3ff;
  --muted: #9cabc5;
  --line: #2a3852;
  --accent: #83d8ff;
  --accent-2: #9cffcb;
  --danger: #ffbd9d;
  --warning: #ffd38c;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at top right, #14284b 0, var(--bg) 35%); color: var(--text); min-height: 100vh; }
.shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.hero { padding: 72px 0 48px; border-bottom: 1px solid var(--line); }
.eyebrow, .step { color: var(--accent); text-transform: uppercase; letter-spacing: .14em; font-size: .76rem; font-weight: 800; }
h1 { font-size: clamp(2.25rem, 5vw, 4.7rem); max-width: 980px; line-height: 1.02; margin: 10px 0 20px; }
h2 { margin: 4px 0 18px; }
h3 { margin-top: 0; }
h4 { margin: 0 0 8px; }
.lead { max-width: 850px; color: var(--muted); font-size: 1.1rem; line-height: 1.7; }
.hero-status-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.status { display: inline-flex; padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); }
.status.ready { color: var(--accent-2); border-color: #2b8061; background: rgba(43, 128, 97, .12); }
.status.error { color: var(--danger); border-color: #9b513a; background: rgba(155, 81, 58, .12); }
.layout { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; padding: 36px 0 70px; }
.card { background: linear-gradient(145deg, rgba(21,31,50,.96), rgba(12,19,32,.96)); border: 1px solid var(--line); border-radius: 24px; padding: 25px; box-shadow: 0 18px 50px rgba(0,0,0,.22); }
.wide { grid-column: 1 / -1; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.section-copy, .subsection-heading p { color: var(--muted); line-height: 1.6; margin: 0; max-width: 760px; }
.drop-zone { min-height: 270px; border: 1px dashed #4f6a91; border-radius: 18px; display: grid; place-content: center; text-align: center; gap: 8px; cursor: pointer; background: rgba(131,216,255,.035); }
.drop-zone:hover, .drop-zone.dragging { border-color: var(--accent); background: rgba(131,216,255,.08); }
.drop-zone span, .message, .summary, .feature-grid p, .warning p { color: var(--muted); line-height: 1.6; }
.drop-zone input { display: none; }
.preview { height: 270px; border-radius: 18px; overflow: hidden; background: #050810; }
.preview img { width: 100%; height: 100%; object-fit: contain; }
button { border: 0; border-radius: 12px; font: inherit; font-weight: 750; cursor: pointer; }
.primary { width: 100%; padding: 14px 18px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #05101a; }
.primary:disabled { opacity: .35; cursor: not-allowed; }
.ghost { padding: 9px 13px; color: var(--text); background: transparent; border: 1px solid var(--line); }
.empty-state { min-height: 315px; display: grid; place-content: center; color: var(--muted); text-align: center; }
.headline-result { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 25px; }
.headline-result div { padding: 16px; border-radius: 14px; background: var(--panel-2); }
.headline-result span { display: block; color: var(--muted); font-size: .78rem; margin-bottom: 7px; }
.headline-result strong { font-size: 1.15rem; }
.probability-row { display: grid; grid-template-columns: 90px 1fr 58px; gap: 12px; align-items: center; margin: 13px 0; }
.probability-track { height: 10px; background: #27334a; border-radius: 20px; overflow: hidden; }
.probability-fill { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.probability-value { text-align: right; }

.evaluation-card { padding: 30px; }
.evaluation-heading { margin-bottom: 22px; }
.selected-badge { flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 38px; padding: 8px 13px; border: 1px solid #2b8061; border-radius: 999px; color: var(--accent-2); background: rgba(43,128,97,.13); font-size: .82rem; font-weight: 800; }
.selection-panel { display: grid; grid-template-columns: minmax(230px, .7fr) 2fr; gap: 22px; align-items: stretch; padding: 22px; border: 1px solid #355075; border-radius: 20px; background: linear-gradient(135deg, rgba(24,50,83,.55), rgba(15,29,49,.72)); }
.selection-panel h3 { font-size: 1.55rem; margin: 8px 0 8px; }
.mini-label { color: var(--accent); text-transform: uppercase; letter-spacing: .11em; font-size: .7rem; font-weight: 800; }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr)); gap: 10px; }
.metric-card { min-height: 112px; padding: 14px; border: 1px solid rgba(131,216,255,.12); border-radius: 15px; background: rgba(7,11,20,.5); }
.metric-card span { display: block; color: var(--muted); font-size: .76rem; line-height: 1.3; }
.metric-card strong { display: block; margin: 8px 0 5px; font-size: 1.28rem; }
.metric-card small { color: #71809b; line-height: 1.35; }
.subsection-heading { display: flex; align-items: flex-end; justify-content: space-between; margin: 30px 0 14px; }
.subsection-heading h3 { margin: 0 0 5px; }
.subsection-heading.compact { margin-top: 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; }
.leaderboard-table { width: 100%; border-collapse: collapse; min-width: 920px; font-size: .88rem; }
.leaderboard-table th, .leaderboard-table td { padding: 14px 13px; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
.leaderboard-table th { color: var(--muted); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; background: var(--panel-3); }
.leaderboard-table th:first-child, .leaderboard-table td:first-child { text-align: left; }
.leaderboard-table tbody tr:last-child td { border-bottom: 0; }
.leaderboard-table tbody tr:hover { background: rgba(131,216,255,.04); }
.leaderboard-table .selected-row { background: rgba(156,255,203,.07); box-shadow: inset 3px 0 0 var(--accent-2); }
.rank { display: inline-grid; place-items: center; width: 24px; height: 24px; margin-right: 9px; border-radius: 8px; color: var(--muted); background: var(--panel-2); font-size: .72rem; }
.winner-tag { margin-left: 8px; padding: 4px 7px; color: var(--accent-2); border: 1px solid #2b8061; border-radius: 999px; font-size: .65rem; text-transform: uppercase; letter-spacing: .06em; }
.table-message { color: var(--muted); text-align: center !important; padding: 28px !important; }
.evaluation-detail-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; margin-top: 20px; }
.evaluation-subcard { padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: rgba(7,11,20,.32); }
.compact-table { margin-top: 15px; }
.class-table { min-width: 530px; }
.robustness-list { display: grid; gap: 13px; margin-top: 18px; }
.robustness-item { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; align-items: center; }
.robustness-label { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 12px; font-size: .85rem; }
.robustness-track { height: 9px; overflow: hidden; border-radius: 999px; background: #27334a; }
.robustness-track span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.robustness-item small { min-width: 58px; color: var(--muted); text-align: right; }
.evaluation-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-top: 22px; }
.evaluation-gallery figure { margin: 0; padding: 10px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel-3); }
.evaluation-gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; border-radius: 10px; background: white; }
.evaluation-gallery figcaption { padding: 10px 4px 3px; color: var(--muted); font-size: .82rem; text-align: center; }
.metric-guide { margin-top: 22px; border: 1px solid var(--line); border-radius: 16px; background: rgba(7,11,20,.35); }
.metric-guide summary { padding: 16px 18px; cursor: pointer; font-weight: 800; }
.metric-guide-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 13px; padding: 0 18px 18px; }
.metric-guide-grid article { padding: 15px; border-radius: 13px; background: var(--panel-2); }
.metric-guide-grid p { margin: 0; color: var(--muted); line-height: 1.55; font-size: .86rem; }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.feature-grid article { background: var(--panel-2); border-radius: 16px; padding: 18px; }
.warning { border-color: #6b493a; }
.footer { padding: 0 0 35px; color: var(--muted); }

@media (max-width: 980px) {
  .selection-panel { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(4, 1fr); }
  .evaluation-detail-grid { grid-template-columns: 1fr; }
  .metric-guide-grid { grid-template-columns: 1fr 1fr; }
  .evaluation-gallery { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .wide { grid-column: auto; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .headline-result { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .evaluation-heading { flex-direction: column; }
}

@media (max-width: 560px) {
  .shell { width: min(100% - 20px, 1180px); }
  .hero { padding: 48px 0 34px; }
  .card, .evaluation-card { padding: 18px; border-radius: 18px; }
  .feature-grid, .metric-guide-grid, .evaluation-gallery { grid-template-columns: 1fr; }
  .selection-panel { padding: 16px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .metric-card { min-height: 104px; }
}