:root {
  --bg: #0e1525;
  --panel: #16203a;
  --panel-2: #1d2a4a;
  --line: #28365c;
  --text: #e8eefc;
  --muted: #93a1c4;
  --accent: #4fd1c5;
  --accent-2: #7c9cff;
  --warn: #ffb454;
  --good: #45c97a;
  --bad: #ff6b6b;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Inter", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1a2a4a 0%, transparent 60%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px; border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(30,42,74,0.6), transparent);
  position: sticky; top: 0; backdrop-filter: blur(8px); z-index: 5;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  font-size: 26px; color: var(--accent);
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 6px 10px;
}
h1 { font-size: 18px; margin: 0; letter-spacing: -0.2px; }
.tagline { margin: 2px 0 0; color: var(--muted); font-size: 12.5px; }
.health { font-size: 12px; color: var(--muted); font-family: "JetBrains Mono", monospace; }
.health.ok { color: var(--good); }
.health.bad { color: var(--bad); }

main { max-width: 1180px; margin: 0 auto; padding: 26px; }

.uploader {
  border: 1.5px dashed var(--line); border-radius: 18px; background: var(--panel);
  padding: 30px; display: flex; flex-direction: column; align-items: center; gap: 18px;
  transition: border-color .15s, background .15s;
}
.uploader.drag { border-color: var(--accent); background: var(--panel-2); }
.drop-inner { text-align: center; }
.drop-icon { font-size: 34px; color: var(--accent-2); }
.drop-title { font-size: 16px; font-weight: 600; margin: 8px 0 4px; }
.drop-sub { color: var(--muted); font-size: 13px; margin: 0; }
.drop-sub code { background: var(--panel-2); padding: 1px 6px; border-radius: 5px; font-size: 12px; }
.drop-file { margin: 10px 0 0; font-family: "JetBrains Mono", monospace; font-size: 12.5px; color: var(--accent); }
.link { background: none; border: none; color: var(--accent-2); cursor: pointer; font: inherit; text-decoration: underline; padding: 0; }

.run-btn {
  background: linear-gradient(180deg, var(--accent-2), #5a7cf0); color: #0b1020;
  border: none; border-radius: 10px; padding: 11px 22px; font-weight: 600; font-size: 14px;
  cursor: pointer; box-shadow: var(--shadow); transition: transform .1s, opacity .15s;
}
.run-btn:hover:not(:disabled) { transform: translateY(-1px); }
.run-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ---- example gallery (click-and-go demo) ---- */
.examples { margin-top: 18px; }
.examples-head { display: flex; align-items: baseline; gap: 10px; margin: 0 2px 10px; }
.ex-title { font-size: 13px; font-weight: 600; }
.ex-sub { font-size: 12px; color: var(--muted); }
.examples-strip {
  display: flex; gap: 10px; overflow-x: auto; padding: 4px 2px 12px;
  scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.examples-strip::-webkit-scrollbar { height: 8px; }
.examples-strip::-webkit-scrollbar-thumb { background: var(--line); border-radius: 999px; }
.ex-card {
  flex: 0 0 auto; width: 122px; display: flex; flex-direction: column; gap: 6px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 8px; cursor: pointer; text-align: left; font: inherit; color: var(--text);
  transition: border-color .12s, transform .1s, box-shadow .12s;
}
.ex-card:hover { border-color: var(--accent-2); transform: translateY(-2px); }
.ex-card.selected { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(79,209,197,.25); }
.ex-card img { width: 100%; height: 64px; object-fit: cover; border-radius: 7px; background: #fff; }
.ex-name { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ex-groups {
  font-family: "JetBrains Mono", monospace; font-size: 10px; color: var(--muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.stages { display: flex; gap: 10px; margin: 22px 0 6px; }
.stage {
  display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted);
  background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px;
}
.stage .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.stage.active { color: var(--text); border-color: var(--accent-2); }
.stage.active .dot { background: var(--accent-2); box-shadow: 0 0 0 4px rgba(124,156,255,.18); }
.stage.done .dot { background: var(--good); }

.grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 18px; margin-top: 16px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }
.col-left, .col-right { display: flex; flex-direction: column; gap: 16px; }

.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px;
}
.card h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); margin: 0 0 12px; }
.card h3 { font-size: 13px; margin: 18px 0 8px; color: var(--accent); }
.count { color: var(--accent); font-weight: 600; }
.muted { color: var(--muted); }

.spectrum img { width: 100%; border-radius: 10px; background: #fff; }
.spectrum { min-height: 60px; display: flex; align-items: center; justify-content: center; }

.peaks { display: flex; flex-wrap: wrap; gap: 6px; }
.peak {
  font-family: "JetBrains Mono", monospace; font-size: 11.5px; padding: 3px 8px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--panel-2);
}
.peak.strong { border-color: var(--accent); color: var(--accent); }
.peak.medium { color: var(--text); }
.peak.weak { color: var(--muted); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); color: var(--muted); }

.thinking-card { display: flex; flex-direction: column; }
.thinking {
  font-family: "JetBrains Mono", monospace; font-size: 12px; line-height: 1.55;
  white-space: pre-wrap; word-break: break-word; color: #c7d3f0;
  background: #0b1222; border: 1px solid var(--line); border-radius: 10px;
  padding: 14px; margin: 0; max-height: 360px; overflow-y: auto;
}
.pulse { color: var(--accent); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .25; } }

.summary { font-size: 14.5px; line-height: 1.6; background: var(--panel-2); border-left: 3px solid var(--accent); padding: 12px 14px; border-radius: 8px; }

.groups { display: flex; flex-direction: column; gap: 8px; }
.group-row { display: flex; align-items: center; gap: 12px; }
.group-name { width: 190px; font-size: 13px; }
.group-name small { color: var(--muted); display: block; font-size: 11px; margin-top: 2px; }
.bar { flex: 1; height: 8px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.pct { width: 42px; text-align: right; font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--muted); }

.candidates { display: flex; flex-direction: column; gap: 10px; }
.cand {
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; background: var(--panel-2);
}
.cand.top { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(79,209,197,.2); }
.cand-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.cand-name { font-weight: 600; font-size: 15px; }
.cand-formula { font-family: "JetBrains Mono", monospace; color: var(--muted); font-size: 12px; }
.cand-conf { font-family: "JetBrains Mono", monospace; font-size: 13px; color: var(--accent); }
.cand-bar { height: 6px; background: var(--bg); border-radius: 999px; margin: 8px 0; overflow: hidden; }
.cand-bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.cand-rat { font-size: 12.5px; color: var(--muted); line-height: 1.5; margin: 6px 0 0; }
.cand-bands { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }
.band { font-size: 10.5px; font-family: "JetBrains Mono", monospace; padding: 2px 6px; border-radius: 5px; }
.band.ok { background: rgba(69,201,122,.12); color: var(--good); }
.band.no { background: rgba(255,107,107,.1); color: var(--bad); }
.cand-meta { font-family: "JetBrains Mono", monospace; font-size: 11px; color: var(--muted); margin-top: 6px; }

.warnings { margin-top: 14px; }
.warn-item { color: var(--warn); font-size: 12.5px; background: rgba(255,180,84,.08); border-radius: 8px; padding: 8px 12px; margin-bottom: 6px; }
.disclaimer { color: var(--muted); font-size: 11.5px; margin-top: 16px; line-height: 1.5; border-top: 1px solid var(--line); padding-top: 12px; }