:root {
  --bg: #f4f1ec;
  --surface: #ffffff;
  --surface-2: #faf8f5;
  --text: #1f1d1a;
  --muted: #6b665e;
  --border: #e3ded4;
  --accent: #2f6f4f;
  --accent-ink: #ffffff;
  --accent-soft: #e8f3ec;
  --danger: #b3261e;
  --danger-soft: #fdecea;
  --info: #3a5a8c;
  --info-soft: #e9eff8;
  --code-bg: #1e1d1b;
  --code-text: #e9e4da;
  --phone: #1a1917;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05), 0 8px 24px rgba(0, 0, 0, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121110;
    --surface: #1c1b19;
    --surface-2: #232220;
    --text: #f1eee9;
    --muted: #a8a298;
    --border: #33302b;
    --accent: #7cc39c;
    --accent-ink: #0f1a14;
    --accent-soft: #15291e;
    --danger: #ffb4ab;
    --danger-soft: #3b1512;
    --info: #9fbbe8;
    --info-soft: #18233a;
    --code-bg: #0b0b0a;
    --code-text: #e9e4da;
    --phone: #000000;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
button, textarea { font: inherit; color: inherit; }

.top { border-bottom: 1px solid var(--border); background: var(--surface); }
.top-inner {
  max-width: 1480px; margin: 0 auto; padding: 18px 24px;
  display: flex; gap: 24px; align-items: flex-end; justify-content: space-between; flex-wrap: wrap;
}
.eyebrow { margin: 0 0 4px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
h1 { margin: 0; font-size: 22px; line-height: 1.25; max-width: 44ch; text-wrap: balance; }
.fiction { margin: 0; font-size: 12px; color: var(--muted); max-width: 34ch; }

.stage {
  max-width: 1480px; margin: 0 auto; padding: 20px 24px 40px;
  display: grid; gap: 20px;
  grid-template-columns: minmax(250px, 300px) minmax(340px, 400px) minmax(360px, 1fr);
  align-items: start;
}
.col { min-width: 0; }
h2 { font-size: 16px; margin: 0 0 6px; display: flex; align-items: center; gap: 8px; }
.step {
  display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-size: 12px; font-weight: 700;
}
.hint { margin: 0 0 12px; color: var(--muted); font-size: 13px; }

/* Shelf */
.shelf-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.item {
  width: 100%; display: grid; grid-template-columns: 76px 1fr; gap: 12px; align-items: center;
  text-align: left; padding: 10px; border-radius: 12px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); border-left: 5px solid var(--c);
  box-shadow: var(--shadow);
}
.item:hover { border-color: var(--accent); border-left-color: var(--c); }
.item[aria-pressed="true"] { outline: 2px solid var(--accent); outline-offset: 1px; }
.item img { width: 76px; height: 76px; background: #fff; border-radius: 6px; padding: 3px; }
.item strong { display: block; font-size: 14px; line-height: 1.3; }
.item .sub { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.tag { display: inline-block; margin-top: 6px; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.tag.danger { background: var(--danger-soft); color: var(--danger); }
.tag.ok { background: var(--accent-soft); color: var(--accent); }
.tag.info { background: var(--info-soft); color: var(--info); }
.more { font-size: 13px; color: var(--muted); margin: 12px 0 0; }

/* Phone */
.views { display: flex; gap: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 3px; margin-bottom: 8px; }
.views button { flex: 1; border: 0; background: transparent; padding: 6px 8px; border-radius: 7px; cursor: pointer; font-size: 13px; color: var(--muted); }
.views button[aria-selected="true"] { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.resolve {
  font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--muted);
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; margin-bottom: 12px;
  overflow-wrap: anywhere;
}
.resolve b { color: var(--text); font-weight: 600; }
.phone { background: var(--phone); border-radius: 38px; padding: 12px; box-shadow: var(--shadow); max-width: 380px; margin: 0 auto; }
.phone-screen { position: relative; background: var(--surface-2); border-radius: 28px; overflow: hidden; height: 680px; }
.phone-screen iframe { width: 100%; height: 100%; border: 0; display: block; background: var(--surface-2); }
.json {
  position: absolute; inset: 0; margin: 0; padding: 16px; overflow: auto;
  background: var(--code-bg); color: var(--code-text); font: 11.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap; overflow-wrap: anywhere;
}
.json .k { color: #9fd3b4; }
.json .s { color: #f2c98b; }
.phone-empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 14px; }

/* Agent */
.agent { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 16px; box-shadow: var(--shadow); min-height: 760px; }
.agent-head { display: flex; justify-content: space-between; align-items: center; }
.ghost { border: 1px solid var(--border); background: transparent; border-radius: 8px; padding: 4px 10px; cursor: pointer; font-size: 13px; }
.offline { background: var(--danger-soft); color: var(--danger); border-radius: 10px; padding: 10px 12px; font-size: 13px; margin-bottom: 10px; }
.chat { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; padding: 4px 2px 12px; max-height: 560px; }
.msg { max-width: 92%; border-radius: 14px; padding: 10px 14px; }
.msg.user { align-self: flex-end; background: var(--accent); color: var(--accent-ink); border-bottom-right-radius: 4px; }
.msg.user .scan { display: block; font-size: 12px; opacity: .85; margin-bottom: 4px; }
.msg.bot { align-self: flex-start; background: var(--surface-2); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg.bot p { margin: 0 0 8px; }
.msg.bot p:last-child, .msg.bot ul:last-child { margin-bottom: 0; }
.msg.bot ul { margin: 0 0 8px; padding-left: 20px; }
.msg.error { align-self: stretch; background: var(--danger-soft); color: var(--danger); font-size: 14px; }
.trace { list-style: none; margin: 0 0 8px; padding: 0; display: grid; gap: 4px; }
.trace li {
  font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--muted);
  display: flex; gap: 6px; align-items: baseline; flex-wrap: wrap;
}
.trace .name { color: var(--text); font-weight: 600; }
.trace .res { color: var(--accent); }
.trace .res.err { color: var(--danger); }
.trace .pending::after { content: "…"; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.thinking { color: var(--muted); font-size: 13px; }
.suggestions { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.suggestions button {
  border: 1px solid var(--border); background: var(--surface-2); border-radius: 999px;
  padding: 5px 12px; font-size: 13px; cursor: pointer; text-align: left;
}
.suggestions button:hover { border-color: var(--accent); }
.ask { border: 1px solid var(--border); border-radius: 12px; padding: 8px; background: var(--surface-2); }
.context { font-size: 12px; margin-bottom: 6px; display: flex; gap: 6px; align-items: center; }
.context .chip { background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 2px 10px; font-weight: 600; }
.context button { border: 0; background: transparent; cursor: pointer; color: var(--muted); padding: 0 4px; }
.ask-row { display: flex; gap: 8px; align-items: flex-end; }
.ask textarea { flex: 1; resize: none; border: 0; background: transparent; outline: none; padding: 6px; }
.ask button[type="submit"] { border: 0; background: var(--accent); color: var(--accent-ink); font-weight: 600; border-radius: 9px; padding: 8px 16px; cursor: pointer; }
.ask button[disabled] { opacity: .5; cursor: default; }
.meter { margin: 8px 0 0; font-size: 12px; color: var(--muted); min-height: 1.5em; }

@media (max-width: 1180px) {
  .stage { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .shelf { grid-column: 1 / -1; }
  .shelf-list { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}
@media (max-width: 760px) {
  .top-inner, .stage { padding-left: 16px; padding-right: 16px; }
  .stage { grid-template-columns: minmax(0, 1fr); }
  h1 { font-size: 19px; }
  .phone-screen { height: 560px; }
  .agent { min-height: 0; }
  .chat { max-height: none; }
}