:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1c1e21;
  --mut: #57606a;
  --bd: #d7dce2;
  --card: #fbfcfd;
  --accent: #0969da;
  --ok: #1a7f37;
  --bad: #cf222e;
  --warn: #9a6700;
  --warn-bg: #fff8e6;
}
:root:not([data-theme="light"]) {
  @media (prefers-color-scheme: dark) {
    --bg: #0d1117; --fg: #e6edf3; --mut: #9aa4af; --bd: #2d333b;
    --card: #12171d; --accent: #4493f8; --ok: #3fb950; --bad: #f85149;
    --warn: #d29922; --warn-bg: #221a06;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1117; --fg: #e6edf3; --mut: #9aa4af; --bd: #2d333b;
  --card: #12171d; --accent: #4493f8; --ok: #3fb950; --bad: #f85149;
  --warn: #d29922; --warn-bg: #221a06;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }

.hero { padding: 8px 0 4px; }
.hero h1 { font-size: 28px; line-height: 1.15; margin: 0 0 6px; letter-spacing: -0.02em; }
.lede { font-size: 17px; margin: 0 0 10px; }
.capability { color: var(--mut); font-size: 14px; margin: 0; max-width: 60ch; }

.card {
  border: 1px solid var(--bd);
  border-radius: 12px;
  background: var(--card);
  padding: 16px;
  margin: 16px 0;
}
.card h2 { font-size: 15px; margin: 0 0 10px; }

.muted { color: var(--mut); }
.small { font-size: 13px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

button {
  font: inherit; font-weight: 600;
  padding: 10px 16px; border-radius: 8px;
  border: 1px solid transparent; background: var(--accent); color: #fff;
  cursor: pointer;
}
button:disabled { opacity: .5; cursor: not-allowed; }
button.ghost { background: transparent; color: var(--fg); border-color: var(--bd); font-weight: 500; }

.runrow { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.off { background: rgba(127,127,127,.18); color: var(--mut); }
.badge.on { background: var(--ok); color: #fff; }

.ladder { list-style: none; margin: 16px 0 8px; padding: 0; }
.ladder li { margin: 3px 0; padding-left: 22px; position: relative; color: var(--mut); }
.ladder li::before { content: "○"; position: absolute; left: 0; color: var(--bd); }
.ladder li.active { color: var(--fg); font-weight: 600; }
.ladder li.active::before { content: "◔"; color: var(--accent); }
.ladder li.done { color: var(--fg); }
.ladder li.done::before { content: "✓"; color: var(--ok); }
.ladder li.fail { color: var(--bad); font-weight: 600; }
.ladder li.fail::before { content: "✕"; color: var(--bad); }

.kv { border-collapse: collapse; width: 100%; font-size: 13px; margin-top: 8px; }
.kv td { padding: 4px 8px; border-bottom: 1px solid var(--bd); vertical-align: top; }
.kv td:first-child { color: var(--mut); width: 42%; }
.kv .ok { color: var(--ok); }
.kv .bad { color: var(--bad); font-weight: 600; }
.kv .warn { color: var(--warn); }

.notice { border-radius: 8px; padding: 10px 12px; font-size: 13px; margin-top: 10px; }
.notice.warn { background: var(--warn-bg); color: var(--warn); border: 1px solid var(--warn); }
.notice.bad { background: rgba(207,34,46,.08); color: var(--bad); border: 1px solid var(--bad); }
.notice.ok { background: rgba(26,127,55,.08); color: var(--ok); border: 1px solid var(--ok); }

.messages { display: flex; flex-direction: column; gap: 12px; margin-bottom: 12px; }
.msg { border-radius: 10px; padding: 10px 12px; white-space: pre-wrap; }
.msg.user { background: rgba(9,105,218,.08); border: 1px solid rgba(9,105,218,.25); align-self: flex-end; max-width: 85%; }
.msg.assistant { background: rgba(127,127,127,.08); border: 1px solid var(--bd); align-self: flex-start; max-width: 95%; }
.msg .role { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--mut); margin-bottom: 4px; }

.composer { display: flex; flex-direction: column; gap: 8px; }
.composer textarea {
  font: inherit; width: 100%; resize: vertical;
  border: 1px solid var(--bd); border-radius: 8px; padding: 10px;
  background: var(--bg); color: var(--fg);
}
.composer-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.gradient { background: transparent; }

/* Revision chips — the second-turn bar, one click. */
#revisionRow { margin: 4px 0 12px; display: flex; flex-direction: column; gap: 6px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font: inherit; font-size: 13px; font-weight: 500;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--bd); background: transparent; color: var(--fg);
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip:disabled { opacity: .5; cursor: not-allowed; }

/* "It's yours now" ownership card. */
.own h2 { font-size: 17px; }
.capgrid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 12px; }
@media (min-width: 620px) { .capgrid { grid-template-columns: repeat(3, 1fr); } }
.cap { border: 1px solid var(--bd); border-radius: 10px; padding: 12px; background: var(--bg); display: flex; flex-direction: column; gap: 6px; }
.cap-h { font-weight: 600; font-size: 14px; }
.cap p { margin: 0; color: var(--mut); }
.cap button { margin-top: 2px; align-self: flex-start; }
.cap .composer-actions { margin-top: 2px; }

pre { overflow: auto; background: rgba(127,127,127,.1); border-radius: 8px; padding: 10px; }
details summary { cursor: pointer; font-size: 13px; color: var(--accent); }
details[open] summary { margin-bottom: 8px; }