/* ---------- Theme tokens ---------- */
:root {
  --bg: #0f1216;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2a3341;
  --text: #e6e9ef;
  --muted: #8b95a5;
  --accent: #5fb0ff;
  --good: #4fd18b;
  --font: 'SF Mono', 'Consolas', 'Menlo', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
}

/* app.js renders everything inside this single container */
#app {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

h1 { font-weight: 600; letter-spacing: -0.01em; }

.title-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 4px; }
.header-buttons { display: flex; gap: 6px; }
.title-row h1 { font-size: 28px; margin: 0; }
.subtitle { color: var(--muted); font-size: 14px; margin: 0 0 28px; }

/* ---------- Settings (optional API key) ---------- */
.settings-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 20px;
}
.settings-box input[type="password"],
.settings-box input[type="text"],
.settings-box select {
  font-family: var(--font);
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 10px;
  width: 100%;
  max-width: 360px;
  font-size: 13px;
}
.hint { color: var(--muted); font-size: 11px; }
button.small { padding: 6px 12px; font-size: 12px; }
.model-options { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.model-option { padding: 4px 10px; font-size: 11px; }

/* ---------- Conversation thread ---------- */
.thread { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }

.bubble {
  max-width: 88%;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.5;
}
.bubble.theirs {
  align-self: flex-start;
  background: var(--panel);
  border: 1px solid var(--border);
}
.bubble.mine {
  align-self: flex-end;
  background: var(--accent);
  color: #06131f;
}
/* A tool/system message (e.g. the lineage-bot drill-down) reads as data
   output, not a person talking: left border instead of a filled color,
   monospace already the site default, line breaks preserved as written. */
.bubble.tool {
  align-self: flex-start;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  max-width: 95%;
}
.bubble-speaker {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 4px;
  opacity: 0.7;
}
.bubble.mine .bubble-speaker { color: #06131f; }
.bubble.theirs .bubble-speaker { color: var(--muted); }
.bubble.tool .bubble-speaker { color: var(--accent); }
.bubble-text { white-space: pre-line; }
.bubble.tool .bubble-text { font-size: 13px; }

/* ---------- Choices ---------- */
.choices { display: flex; flex-direction: column; gap: 10px; }
.choice-btn {
  font-family: var(--font);
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color .15s;
}
.choice-btn:hover { border-color: var(--accent); }

/* ---------- Ending ---------- */
.ending-card {
  background: var(--panel-2);
  border: 1px solid var(--good);
  border-left: 3px solid var(--good);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 18px;
}
.ending-title { font-size: 18px; font-weight: 600; margin: 4px 0; }
.field-desc { color: var(--muted); font-size: 13px; margin-top: 4px; line-height: 1.5; }

.actions-row { display: flex; gap: 10px; flex-wrap: wrap; }
button {
  font-family: var(--font);
  background: var(--accent);
  color: #06131f;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }