/* Kid-Safe AI Companion — privacy-by-default (system fonts, no external requests).
   High-contrast palette; safety states use ICON + LABEL + border style, never colour
   alone (deutan-safe). */
:root {
  --bg: #eef2fb;
  --ink: #14213d;
  --muted: #5b6678;
  --line: #d8dee9;
  --bot: #ffffff;
  --me: #1d4ed8;        /* blue — child's own messages */
  --me-ink: #ffffff;
  --accent: #1d4ed8;
  --warn-line: #b45309;  /* amber-ish, paired with 🛡️/⚠️ icons */
  --warn-bg: #fff7e6;
  --care-line: #6d28d9;  /* purple, paired with 💙 icon (distinct from warn) */
  --care-bg: #f3efff;
  --radius: 16px;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.topbar { background: #14213d; color: #eaf0fb; padding: 14px 0; }
.title { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 1.8rem; }
.topbar h1 { font-size: 1.2rem; margin: 0; }
.sub { margin: 0; font-size: 0.82rem; color: #aab6cc; }
.controls { display: flex; align-items: center; gap: 12px; }
.ctrl { display: flex; flex-direction: column; font-size: 0.7rem; color: #aab6cc; }
.ctrl select { margin-top: 2px; padding: 6px 8px; border-radius: 8px; border: 1px solid #2b3a5c; background: #1b2c4f; color: #eaf0fb; }
.seg { display: inline-flex; background: #1b2c4f; border-radius: 999px; padding: 3px; }
.seg-btn { border: 0; background: transparent; color: #aab6cc; padding: 7px 14px; border-radius: 999px; cursor: pointer; font-weight: 600; font-size: 0.85rem; }
.seg-btn.active { background: #3b82f6; color: #fff; }

.chat-wrap { padding: 16px 16px 28px; }
.chat {
  background: transparent;
  min-height: 30vh;
  max-height: 60vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 8px 0;
}
.msg { display: flex; }
.msg.me { justify-content: flex-end; }
.bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--bot);
  border: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(20,33,61,0.06);
}
.bubble p { margin: 0; }
.msg.me .bubble { background: var(--me); color: var(--me-ink); border-color: var(--me); border-bottom-right-radius: 6px; }
.msg.bot .bubble { border-bottom-left-radius: 6px; }

.disclosure { display: block; margin-top: 6px; font-size: 0.72rem; color: var(--muted); }

/* Safety states — each has an icon + a text label, not colour alone */
.bubble.flag-redirect { background: var(--warn-bg); border: 2px solid var(--warn-line); }
.bubble.flag-escalate { background: var(--care-bg); border: 2px solid var(--care-line); }
.safety-label { display: inline-block; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 4px; }

.composer { display: flex; gap: 8px; margin-top: 12px; }
.composer input {
  flex: 1; padding: 12px 14px; border-radius: 999px; border: 1px solid var(--line);
  font-size: 1rem; background: #fff; color: var(--ink);
}
.composer input:focus { outline: 3px solid #9bb8ff; border-color: var(--accent); }
.composer button {
  border: 0; background: var(--accent); color: #fff; font-weight: 700; padding: 0 20px;
  border-radius: 999px; cursor: pointer; font-size: 1rem;
}
.composer button[disabled] { opacity: 0.6; cursor: progress; }

.safety-note { margin: 16px 0 0; font-size: 0.82rem; color: var(--muted); }
.chip {
  border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 999px;
  padding: 4px 10px; font-size: 0.78rem; cursor: pointer; margin: 2px 2px 0 0;
}
.chip:hover { background: #e7edfb; }

.cta {
  border: 0; background: var(--accent); color: #fff; font-weight: 700;
  font-size: 0.98rem; padding: 12px 28px; border-radius: 999px; cursor: pointer;
  box-shadow: 0 8px 20px rgba(29,78,216,.28);
}
.cta:hover { background: #1a45c4; }
.sample-label {
  text-align: center; font-size: 0.72rem; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--muted); margin: 2px 0 10px;
}
.adapt-note {
  display: inline-block; margin: 12px auto 0; padding: 7px 14px;
  font-size: 0.8rem; color: var(--accent); background: #e7edfb;
  border: 1px solid #c9d8fb; border-radius: 999px; line-height: 1.4;
}
.adapt-note b { color: var(--ink); }
@keyframes adaptFlash {
  0% { background: #c7dbff; transform: scale(1.04); }
  100% { background: #e7edfb; transform: scale(1); }
}
.adapt-note.flash { animation: adaptFlash 0.55s ease-out; }
@media (prefers-reduced-motion: reduce) { .adapt-note.flash { animation: none; } }

/* Hero H1 — dominant, tight */
.hero-h1 {
  font-size: clamp(30px, 5.2vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 12px;
  color: var(--ink);
}

/* Sample conversation card — clearly labelled, illustrative */
.sample {
  margin: 18px auto 4px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 20px 16px;
  box-shadow: 0 10px 30px rgba(20,33,61,0.07);
}
.sample-head { text-align: center; margin-bottom: 16px; }
.sample-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 800; letter-spacing: .06em;
  text-transform: uppercase; color: #fff; background: var(--accent);
  padding: 4px 12px; border-radius: 999px;
}
.sample-sub { display: block; margin-top: 8px; font-size: 0.84rem; color: var(--muted); }
.sample-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 620px) { .sample-grid { grid-template-columns: 1fr; } }
.sample-col {
  background: #f7f9ff; border: 1px solid var(--line); border-radius: 14px; padding: 12px 12px 14px;
}
.sample-redirect { margin-top: 14px; background: var(--warn-bg); border-color: var(--warn-line); }
.sample-band {
  font-size: 0.72rem; font-weight: 800; letter-spacing: .03em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
}
.sample-band-safe { color: var(--warn-line); }
.s-msg { display: flex; margin-top: 8px; }
.s-msg.s-me { justify-content: flex-end; }
.s-bubble {
  max-width: 90%; padding: 9px 13px; border-radius: 14px; font-size: 0.9rem; line-height: 1.45;
  background: #fff; border: 1px solid var(--line);
}
.s-me .s-bubble { background: var(--me); color: var(--me-ink); border-color: var(--me); border-bottom-right-radius: 5px; }
.s-bot .s-bubble { border-bottom-left-radius: 5px; }
.s-bubble.s-flag { background: #fffdf6; border: 2px solid var(--warn-line); }
.s-disclosure { display: block; margin-top: 7px; font-size: 0.72rem; color: var(--muted); }
.sample-note { text-align: center; margin: 14px 0 0; font-size: 0.76rem; color: var(--muted); }

.foot { color: var(--muted); font-size: 0.78rem; padding: 8px 0 24px; }
.foot p { margin: 0; }