:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #1b1b1f;
  --muted: #62626b;
  --line: #e2e0d8;
  --accent: #c9420c;
  --accent-ink: #ffffff;
  --accent-soft: #fbe6dc;
  --brand: #e8501b;
  --win-bg: #15151b;
  --win-bar: #1f1f27;
  --win-ink: #e8e8ee;
  --win-muted: #8b8b98;
  --win-line: #2c2c36;
  --ok: #3ecf8e;
  --err: #ff6b6b;
  --tool: #ff9b6e;
  --user: #f5c26b;
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e0e12;
    --surface: #17171d;
    --ink: #ececf1;
    --muted: #9a9aa6;
    --line: #2a2a33;
    --accent: #ff7a45;
    --accent-ink: #17100c;
    --accent-soft: #2e1d15;
    --win-bg: #0b0b0f;
    --win-bar: #15151c;
    --win-line: #24242d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
button { font: inherit; }
[hidden] { display: none !important; }

.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }

/* ---------- header / footer ---------- */
.top { padding: 18px 0; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; letter-spacing: -0.01em; }
.mark { width: 30px; height: 30px; display: block; flex: none; }
.wordmark { font-size: 17px; font-weight: 750; letter-spacing: -0.02em; }
.top-link { color: var(--muted); text-decoration: none; font-size: 14px; }
.top-link:hover { color: var(--ink); }
footer { color: var(--muted); font-size: 13px; padding: 40px 16px 32px; text-align: center; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  padding: 10px 16px; border-radius: 999px; cursor: pointer; text-decoration: none; font-weight: 550;
}
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: .45; cursor: default; border-color: var(--line); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 6px 12px; font-size: 14px; }

/* ---------- landing ---------- */
.hero { padding: 40px 0 28px; }
.hero h1 { font-size: clamp(34px, 7vw, 58px); line-height: 1.04; letter-spacing: -0.035em; margin: 0 0 16px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p { font-size: 19px; color: var(--muted); max-width: 600px; margin: 0 0 24px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 10px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 36px 0; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.step b { display: block; font-size: 13px; color: var(--accent); font-family: var(--mono); margin-bottom: 6px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin: 16px 0; }
.panel h2 { margin: 0 0 6px; font-size: 21px; letter-spacing: -0.015em; }
.panel > p { margin: 0 0 14px; color: var(--muted); }
pre.code {
  background: var(--win-bg); color: var(--win-ink); border-radius: 10px; padding: 14px 16px;
  font: 13.5px/1.6 var(--mono); overflow-x: auto; margin: 10px 0 0; white-space: pre;
}
pre.code .c { color: var(--win-muted); }

.drop {
  border: 1.5px dashed var(--line); border-radius: 12px; padding: 18px; text-align: center; color: var(--muted);
  transition: border-color .15s, background .15s;
}
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop textarea {
  width: 100%; min-height: 110px; margin-top: 12px; resize: vertical; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); padding: 10px; font: 13px/1.5 var(--mono);
}
.made { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.made input {
  flex: 1 1 260px; min-width: 0; border: 1px solid var(--line); border-radius: 999px; padding: 9px 14px;
  background: var(--bg); color: var(--ink); font: 13px var(--mono);
}
.msg-error { color: var(--err); font-size: 14px; margin-top: 10px; }

/* ---------- player ---------- */
.stage { padding: 12px 0 0; }
.ask {
  display: flex; gap: 10px; align-items: flex-start; margin: 0 0 18px;
  opacity: 0; transform: translateY(6px); transition: opacity .4s, transform .4s;
}
.ask.show { opacity: 1; transform: none; }
.ask .who { font-size: 14px; color: var(--muted); }
.ask .bubble {
  background: var(--surface); border: 1px solid var(--line); border-radius: 18px 18px 18px 4px;
  padding: 12px 16px; max-width: 620px; font-size: 18px;
}

.caption {
  font-size: clamp(22px, 4.6vw, 32px); font-weight: 700; letter-spacing: -0.025em; line-height: 1.15;
  min-height: 1.2em; margin: 0 0 14px;
}
.caption.swap { animation: swap .35s ease; }
@keyframes swap { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.window {
  background: var(--win-bg); color: var(--win-ink); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--win-line); box-shadow: 0 18px 50px -20px rgba(0,0,0,.45);
}
.titlebar {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--win-bar);
  border-bottom: 1px solid var(--win-line); font: 12.5px var(--mono); color: var(--win-muted);
}
.dots { display: flex; gap: 6px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: #3a3a46; display: block; }
.titlebar .t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.feed {
  height: min(64vh, 680px); overflow-y: auto; padding: 22px 22px 8px;
  font: 18px/1.55 var(--sans); scroll-behavior: smooth;
}
.feed > * { animation: rise .45s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.ev { margin: 0 0 20px; }

/* What the person asked: a chat bubble */
.ev-user {
  margin-left: auto; max-width: 88%; width: fit-content;
  background: #2b2950; color: #fff; border-radius: 18px 18px 4px 18px; padding: 12px 16px;
  white-space: pre-wrap; word-break: break-word;
}

/* A line from the agent */
.ev-say { color: #d9d9e3; white-space: pre-wrap; word-break: break-word; }

/* One step: a numbered check, a plain-English label, the command underneath */
.ev-tool { display: grid; grid-template-columns: 30px 1fr; gap: 0 12px; align-items: start; }
.ev-tool .icon {
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; margin-top: 1px;
  background: #1f3b2f; color: var(--ok); font: 700 14px/1 var(--sans);
  transition: background .3s, color .3s;
}
.ev-tool.running .icon { background: #262633; color: var(--win-muted); }
.ev-tool.running .icon::after {
  content: ""; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--win-muted); border-top-color: transparent; animation: spin .8s linear infinite;
}
.ev-tool.running .icon span { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.ev-tool .label { color: #fff; font-weight: 600; word-break: break-word; }
.ev-tool .cmd {
  grid-column: 2; font: 14.5px/1.5 var(--mono); color: var(--win-muted);
  white-space: pre-wrap; word-break: break-word; margin-top: 2px;
}
.ev-tool .cmd b { color: var(--tool); font-weight: 600; margin-right: 8px; }
.ev-tool .out {
  grid-column: 2; margin-top: 8px; padding: 10px 14px; border-radius: 10px; background: #1c1c25;
  font: 14.5px/1.55 var(--mono); color: #c3c3cf; white-space: pre; overflow-x: auto;
  animation: rise .4s ease both;
}
.ev-tool .out .more { color: var(--win-muted); }
@keyframes blink { 50% { opacity: .25; } }

.ev-result {
  font-size: 19px; line-height: 1.6;
  background: #1d1d26; border: 1px solid var(--win-line); border-radius: 14px; padding: 18px 20px;
}
.ev-result::before {
  content: "Answer"; display: block; font: 700 12px var(--sans); text-transform: uppercase; letter-spacing: .1em;
  color: var(--ok); margin-bottom: 8px;
}
.ev-result p { margin: 0 0 12px; }
.ev-result p:last-child, .ev-result ul:last-child, .ev-result ol:last-child { margin-bottom: 0; }
.ev-result ul, .ev-result ol { margin: 0 0 12px; padding-left: 22px; }
.ev-result li { margin: 6px 0; }
.ev-result code { font: 15.5px var(--mono); background: #2a2a36; padding: 1px 7px; border-radius: 6px; overflow-wrap: anywhere; }
.ev-result pre { background: #121218; padding: 12px 14px; border-radius: 8px; overflow-x: auto; }
.ev-result pre code { background: none; padding: 0; }
.ev-result h3, .ev-result h4 { margin: 14px 0 6px; font-size: 19px; }
.ev-result a { color: #b3aeff; }

.composer {
  display: flex; align-items: flex-start; gap: 10px; padding: 14px 22px; border-top: 1px solid var(--win-line);
  font: 18px/1.5 var(--sans); min-height: 56px; background: var(--win-bar);
}
.composer .caret { color: var(--win-muted); }
.composer .typed { white-space: pre-wrap; word-break: break-word; color: var(--win-ink); }
.cursor { display: inline-block; width: 2px; height: 1.2em; background: var(--win-ink); vertical-align: text-bottom; animation: blink 1s steps(2) infinite; margin-left: 2px; }

.controls { display: flex; align-items: center; gap: 8px; margin: 14px 0 0; flex-wrap: wrap; }
.controls .btn { padding: 7px 12px; font-size: 14px; }
.progress { flex: 1 1 140px; height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; min-width: 100px; }
.progress i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.speed { font-family: var(--mono); min-width: 52px; }

.outro {
  margin: 18px 0 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; text-align: center; animation: rise .4s ease both;
}
.outro h2 { font-size: clamp(24px, 5vw, 34px); letter-spacing: -0.03em; margin: 0 0 6px; }
.outro p { color: var(--muted); margin: 0 0 16px; }
.outro .stats { font: 13px var(--mono); color: var(--muted); margin-bottom: 16px; }
.outro .actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

.error-box { padding: 60px 0; text-align: center; }
.error-box h1 { font-size: 28px; letter-spacing: -0.02em; }
.error-box p { color: var(--muted); }

@media (max-width: 640px) {
  .steps { grid-template-columns: 1fr; }
  .feed { height: 60vh; padding: 16px 14px 4px; font-size: 17px; }
  .ev-tool .cmd, .ev-tool .out { font-size: 13px; }
  .ev-result { font-size: 17px; padding: 14px 16px; }
  .composer { padding: 12px 14px; font-size: 16.5px; }
  .hero { padding-top: 20px; }
  .hero p { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- hero demo (site/hero, built from studio/src/hero) ---------- */
.hero-demo { aspect-ratio: 848 / 440; margin: 8px 0 0; }
@media (max-width: 671px) { .hero-demo { aspect-ratio: 358 / 700; } }