:root {
  --bg: #0a0d18;
  --bg2: #0e1322;
  --card: rgba(255, 255, 255, 0.035);
  --line: rgba(255, 255, 255, 0.1);
  --ink: #e8ecf8;
  --dim: #97a2bd;
  --accent: #6b8cff;
  --accent2: #38d6c4;
  --warn: #ffb454;
  --bad: #ff6b6b;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 620px at 12% -10%, #1b2450 0%, transparent 60%),
    radial-gradient(900px 520px at 92% 0%, #10333a 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- top bar ---------- */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(10, 13, 24, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-weight: 640;
  letter-spacing: -0.01em;
}
.whale { font-size: 20px; }
.top nav { display: flex; align-items: center; gap: 18px; font-size: 14px; }
.top nav a { color: var(--dim); }
.top nav a:hover { color: var(--ink); }
.top nav .cta {
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 12px;
}

/* ---------- layout ---------- */
main {
  max-width: 940px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px) clamp(16px, 4vw, 24px) 72px;
}

/* ---------- hero ---------- */
.hero { padding: 22px 0 34px; }
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 6.4vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  background: linear-gradient(96deg, #fff 8%, #a9bcff 52%, #64e3d2 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede { max-width: 62ch; color: var(--dim); font-size: 17px; margin: 0 0 20px; }
.lede strong { color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip {
  font-size: 12.5px;
  color: var(--dim);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  padding: 4px 11px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  padding: 9px 15px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.06s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { background: rgba(255, 255, 255, 0.09); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(135deg, #4f6ef7, #2f7de0);
  border-color: transparent;
  font-weight: 600;
}
.btn.primary:hover { background: linear-gradient(135deg, #5b79ff, #3a8bef); }
.btn.ghost { background: transparent; }
.tiny-btn { padding: 5px 10px; font-size: 12.5px; }

/* ---------- cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(16px, 3vw, 26px);
  margin-bottom: 26px;
  scroll-margin-top: 74px;
}
.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.card h2 { margin: 0; font-size: 19px; letter-spacing: -0.01em; }
.hint { color: var(--dim); font-size: 12.5px; }
.tiny { color: var(--dim); font-size: 12.5px; margin: 12px 0 0; }
.req { color: var(--warn); font-size: 11px; border: 1px solid rgba(255, 180, 84, 0.4); border-radius: 5px; padding: 1px 5px; }

/* ---------- connect / details ---------- */
details.connect {
  border: 1px solid rgba(255, 180, 84, 0.32);
  background: rgba(255, 180, 84, 0.055);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 16px;
}
details.connect summary { cursor: pointer; font-weight: 600; font-size: 14.5px; }
details.connect p { color: var(--dim); font-size: 13.5px; }
details.reasoning { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 10px; }
details.reasoning summary { cursor: pointer; color: var(--dim); font-size: 13px; }
#reasoning {
  margin: 10px 0 0;
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  font: 12.5px/1.55 var(--mono);
  color: #b9c4de;
  background: rgba(0, 0, 0, 0.28);
  border-radius: 10px;
  padding: 11px;
}

/* ---------- form bits ---------- */
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
input[type="text"], input[type="password"], textarea, select {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  padding: 9px 11px;
  border-radius: 9px;
  outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
.row input { flex: 1 1 240px; width: auto; }
textarea { resize: vertical; font-family: inherit; }

label { display: block; color: var(--dim); font-size: 12.5px; }
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin: 16px 0;
}
.controls output { color: var(--ink); font-variant-numeric: tabular-nums; }
.controls input[type="range"] { width: 100%; accent-color: var(--accent); margin-top: 4px; }
.controls select { margin-top: 4px; }
.sys { margin-bottom: 14px; }
.sys input { margin-top: 4px; }

/* ---------- transcript ---------- */
.transcript {
  min-height: 140px;
  max-height: 480px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.22);
  padding: 6px 16px;
}
.transcript .empty { color: var(--dim); font-size: 14px; }
.turn { padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
.turn:last-child { border-bottom: 0; }
.turn .who {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dim);
  margin-bottom: 6px;
}
.turn.user .who { color: #8fb0ff; }
.turn.bot .who { color: #6fe0cf; }
.turn .body p { margin: 0 0 10px; }
.turn .body p:last-child { margin-bottom: 0; }
.turn.user .body { color: #d5dcf0; }

pre.code, pre.code-block {
  background: #05070f;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  overflow: auto;
  font: 12.5px/1.6 var(--mono);
  color: #cfd8ee;
  margin: 10px 0;
}
code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 5px;
  padding: 1px 5px;
}
pre code { background: none; padding: 0; }

/* ---------- composer ---------- */
.composer { display: flex; gap: 10px; margin-top: 14px; align-items: flex-end; }
.composer textarea { flex: 1 1 auto; }
.composer-actions { display: flex; flex-direction: column; gap: 8px; }

/* ---------- benchmarks ---------- */
.bench { display: grid; gap: 10px; }
.bench-row {
  display: grid;
  grid-template-columns: minmax(140px, 1.3fr) 3fr auto;
  gap: 12px;
  align-items: center;
  font-size: 13.5px;
}
.bench-name { color: var(--dim); }
.bars { display: grid; gap: 3px; }
.bar { height: 9px; border-radius: 3px; min-width: 2px; }
.bar.new { background: linear-gradient(90deg, #4f6ef7, #38d6c4); }
.bar.old { background: rgba(255, 255, 255, 0.18); }
.bench-val { font-variant-numeric: tabular-nums; color: var(--ink); white-space: nowrap; }
.bench-val .up { color: var(--accent2); font-size: 12px; margin-left: 6px; }

/* ---------- misc ---------- */
.notes { color: var(--dim); font-size: 13.5px; padding-left: 20px; }
.notes li { margin: 5px 0; }
.provenance { border-color: rgba(107, 140, 255, 0.28); }
.status-ok { color: var(--accent2); }
.status-bad { color: var(--bad); }
.status-warn { color: var(--warn); }

footer {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  max-width: 940px;
  margin: 0 auto;
  padding: 20px clamp(16px, 4vw, 24px) 40px;
  color: var(--dim);
  font-size: 12.5px;
  border-top: 1px solid var(--line);
}

@media (max-width: 620px) {
  .bench-row { grid-template-columns: 1fr; gap: 4px; }
  .bench-val { justify-self: start; }
  .composer { flex-direction: column; align-items: stretch; }
  .composer-actions { flex-direction: row; }
  .top nav { gap: 12px; }
  .top nav a:not(.cta) { display: none; }
}