/* ============ tokens ============ */
:root {
  --bg: #faf6f0;
  --surface: #fffdf9;
  --ink: #2e2620;
  --ink-2: #6b5f52;
  --ink-3: #a2978a;
  --accent: #c2542f;
  --accent-deep: #a34222;
  --accent-soft: #f6e4d8;

  --luna-bg: #fdeef2;
  --luna-bd: #ecc0ce;
  --luna-ink: #a8385c;
  --luna-avatar: #c94f7c;

  --antonio-bg: #eef3fb;
  --antonio-bd: #bdceea;
  --antonio-ink: #2f5a9e;
  --antonio-avatar: #3f6cb8;

  --ok: #2e7d4f;

  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px;
  --r-md: 14px; --r-lg: 18px; --r-pill: 999px;
  --sh-card: 0 1px 2px rgba(46, 38, 32, .05), 0 4px 16px rgba(46, 38, 32, .06);
  --fs-display: clamp(1.45rem, 5vw, 2rem);
  --fs-title: 1.05rem;
  --fs-body: 1rem;
  --fs-small: .875rem;
  --fs-label: .72rem;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ============ base ============ */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 640px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
button { font-family: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ============ header ============ */
.app-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(250, 246, 240, .86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(46, 38, 32, .08);
  padding-top: max(14px, env(safe-area-inset-top));
  padding-bottom: 12px;
}
.eyebrow {
  margin: 0 0 4px;
  font-size: var(--fs-label);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}
#scene-title-it {
  margin: 0; font-size: var(--fs-display); line-height: 1.15; font-weight: 800;
  letter-spacing: -.01em;
}
.scene-zh { margin: 4px 0 0; font-size: var(--fs-title); color: var(--ink-2); }
.chips { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: var(--fs-small); font-weight: 600;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid rgba(46, 38, 32, .12);
  border-radius: var(--r-pill);
  padding: 3px 11px;
}

/* ============ scene chips ============ */
.scene-bar { padding: 12px 0 4px; }
.scene-chips {
  display: flex; gap: 8px; overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.scene-chips::-webkit-scrollbar { display: none; }
.scene-chip {
  flex: 0 0 auto; scroll-snap-align: start;
  appearance: none; border: 1px solid rgba(46, 38, 32, .14);
  background: var(--surface); color: var(--ink-2);
  border-radius: var(--r-pill);
  padding: 9px 16px; font-size: var(--fs-body); font-weight: 600;
  cursor: pointer; transition: all .18s var(--ease);
  min-height: 44px; touch-action: manipulation;
}
.scene-chip[aria-selected="true"] {
  background: var(--ink); color: var(--bg); border-color: var(--ink);
}

/* ============ cards & full player ============ */
.card {
  background: var(--surface);
  border: 1px solid rgba(46, 38, 32, .07);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-card);
}
.full-player {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; margin: 14px 0 18px;
}
.full-player.is-playing { border-color: var(--accent); }
.big-play {
  flex: 0 0 auto;
  width: 56px; height: 56px; border-radius: 50%;
  border: none; cursor: pointer;
  background: var(--accent); color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 4px 14px rgba(194, 84, 47, .35);
  transition: transform .15s var(--ease), background .15s var(--ease);
  touch-action: manipulation;
}
.big-play:active { transform: scale(.94); }
.big-play.is-playing { background: var(--ink); }
.icon { font-size: 18px; line-height: 1; }
.fp-body { flex: 1; min-width: 0; }
.fp-label { margin: 0 0 6px; font-weight: 700; font-size: var(--fs-small); }
.track {
  height: 6px; border-radius: var(--r-pill);
  background: rgba(46, 38, 32, .1); overflow: hidden; cursor: pointer;
}
.bar {
  height: 100%; width: 0%;
  background: var(--accent); border-radius: var(--r-pill);
  transition: width .1s linear;
}
.fp-time { margin: 6px 0 0; font-size: var(--fs-label); color: var(--ink-3); font-variant-numeric: tabular-nums; }

/* ============ dialogue bubbles ============ */
.msg { display: flex; gap: 10px; margin-bottom: 16px; align-items: flex-start; }
.msg.luna { flex-direction: row; }
.msg.antonio { flex-direction: row-reverse; }
.avatar {
  flex: 0 0 auto;
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 15px;
  letter-spacing: .02em;
  margin-top: 2px;
  user-select: none;
}
.msg.luna .avatar { background: var(--luna-avatar); }
.msg.antonio .avatar { background: var(--antonio-avatar); }
.bubble {
  max-width: 82%;
  min-width: 0;
  border-radius: var(--r-lg);
  padding: 10px 14px 12px;
  transition: box-shadow .2s var(--ease);
}
.msg.luna .bubble { background: var(--luna-bg); border: 1px solid var(--luna-bd); border-top-left-radius: 6px; }
.msg.antonio .bubble { background: var(--antonio-bg); border: 1px solid var(--antonio-bd); border-top-right-radius: 6px; }
.bubble.is-playing { box-shadow: 0 0 0 3px rgba(194, 84, 47, .28); }
.speaker { display: flex; gap: 6px; align-items: baseline; margin-bottom: 3px; }
.msg.luna .speaker { color: var(--luna-ink); }
.msg.antonio .speaker { color: var(--antonio-ink); }
.speaker-it { font-weight: 800; font-size: var(--fs-small); }
.speaker-zh { font-size: var(--fs-label); opacity: .75; }
.it-text { margin: 0; font-size: var(--fs-body); font-weight: 600; line-height: 1.5; }
.zh-text { margin: 3px 0 0; font-size: var(--fs-small); color: var(--ink-2); }

/* line player */
.line-player {
  display: flex; align-items: center; gap: 10px;
  margin-top: 9px; padding-top: 9px;
  border-top: 1px solid rgba(46, 38, 32, .08);
}
.play-btn {
  flex: 0 0 auto;
  width: 40px; height: 40px; border-radius: 50%;
  border: none; cursor: pointer;
  display: grid; place-items: center;
  background: var(--ink); color: #fff;
  font-size: 13px;
  transition: transform .15s var(--ease), background .15s var(--ease);
  touch-action: manipulation;
}
.play-btn:active { transform: scale(.92); }
.play-btn.is-playing { background: var(--accent); }
.play-btn:disabled { background: rgba(46, 38, 32, .18); color: rgba(255,255,255,.7); cursor: not-allowed; }
.lp-track {
  flex: 1; min-width: 0; height: 5px; border-radius: var(--r-pill);
  background: rgba(46, 38, 32, .12); overflow: hidden; cursor: pointer;
}
.lp-bar { height: 100%; width: 0%; background: var(--accent); border-radius: var(--r-pill); transition: width .1s linear; }
.lp-time { flex: 0 0 auto; font-size: var(--fs-label); color: var(--ink-3); font-variant-numeric: tabular-nums; }

/* ============ empty & footer ============ */
.empty { padding: 28px 20px; text-align: center; margin-top: 8px; }
.empty p { margin: 0 0 6px; font-weight: 700; }
.muted { color: var(--ink-3); font-weight: 400 !important; font-size: var(--fs-small); }
.site-foot { padding: 26px 16px 40px; color: var(--ink-3); font-size: var(--fs-label); text-align: center; }

/* ============ footer links, guestbook ============ */
.gb-link { color: var(--accent); font-weight: 700; text-decoration: none; }
.gb-link:hover { text-decoration: underline; }

.gb-section-title {
  margin: 0 0 4px; font-size: 1.02rem; font-weight: 800;
  letter-spacing: -.01em;
}
.gb-list-title { margin: 26px 4px 12px; }
.gb-count-pill {
  display: inline-block; min-width: 22px; text-align: center;
  background: var(--accent-soft); color: var(--accent-deep);
  font-size: var(--fs-label); font-weight: 800;
  border-radius: var(--r-pill); padding: 2px 8px; margin-left: 6px;
}
.gb-form { padding: 20px 18px 22px; margin-top: 16px; }
.gb-label {
  display: block; font-size: var(--fs-small); font-weight: 700;
  margin: 14px 2px 6px; color: var(--ink-2);
}
.gb-input {
  width: 100%; min-height: 46px;
  border: 1.5px solid rgba(46, 38, 32, .14);
  border-radius: var(--r-md);
  padding: 11px 14px; font-size: 16px; /* 16px: prevents iOS auto-zoom */
  background: var(--bg); color: var(--ink);
  font-family: inherit;
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
  -webkit-appearance: none; appearance: none;
}
.gb-input::placeholder { color: var(--ink-3); }
.gb-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(194, 84, 47, .15);
  background: var(--surface);
}
textarea.gb-input { resize: vertical; min-height: 108px; line-height: 1.5; }
.gb-count {
  text-align: right; font-size: var(--fs-label); color: var(--ink-3);
  margin: 4px 2px 0;
  font-variant-numeric: tabular-nums;
}
.gb-hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.gb-submit {
  width: 100%; margin-top: 16px;
  background: var(--accent); color: #fff; font-weight: 700;
  border: none; border-radius: var(--r-pill);
  padding: 14px; font-size: var(--fs-body);
  cursor: pointer; min-height: 50px;
  box-shadow: 0 4px 14px rgba(194, 84, 47, .3);
  transition: transform .12s var(--ease), background .15s var(--ease);
  touch-action: manipulation;
}
.gb-submit:active { transform: scale(.98); }
.gb-hint {
  margin: 12px 2px 0; font-size: var(--fs-small);
  color: var(--accent-deep); font-weight: 600;
  min-height: 1.2em;
}
#gb-list { display: flex; flex-direction: column; gap: 10px; }
.gb-msg {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--surface);
  border: 1px solid rgba(46, 38, 32, .07);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-card);
  padding: 14px 16px;
}
.gb-avatar {
  flex: 0 0 auto;
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 16px;
  user-select: none;
}
.gb-msg-body-wrap { flex: 1; min-width: 0; }
.gb-msg-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.gb-msg-name { font-weight: 800; color: var(--ink); }
.gb-msg-time { font-size: var(--fs-label); color: var(--ink-3); flex: 0 0 auto; }
.gb-msg-body {
  margin: 5px 0 0; font-size: var(--fs-small); line-height: 1.6;
  color: var(--ink-2); white-space: pre-wrap; word-break: break-word;
}
.gb-empty {
  text-align: center;
  border: 1.5px dashed rgba(46, 38, 32, .18);
  border-radius: var(--r-lg);
  padding: 36px 20px; margin-top: 4px;
  background: rgba(255, 253, 249, .5);
}
.gb-empty-icon { font-size: 34px; display: block; margin-bottom: 8px; }
.gb-empty-title { margin: 0 0 4px; font-weight: 800; }

/* ============ desktop ============ */
@media (min-width: 768px) {
  .bubble { max-width: 72%; }
  .scene-chips { justify-content: center; }
  .app-header { text-align: center; }
  .chips { justify-content: center; }
}

/* ============ home: industry cards ============ */
.home-header { text-align: center; }
.home-header h1 { letter-spacing: -.01em; }
.industry-grid {
  display: grid; gap: 12px;
  grid-template-columns: 1fr;
  margin-top: 18px;
}
.industry-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--surface);
  border: 1px solid rgba(46, 38, 32, .07);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-card);
  padding: 16px;
  text-decoration: none; color: inherit;
  transition: transform .15s var(--ease), border-color .15s var(--ease);
  min-height: 72px;
}
.industry-card:active { transform: scale(.98); }
.industry-card:hover { border-color: var(--accent); }
.ind-icon {
  flex: 0 0 auto;
  width: 52px; height: 52px; border-radius: 16px;
  display: grid; place-items: center;
  font-size: 26px;
  background: var(--accent-soft);
}
.ind-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.ind-it { font-weight: 800; font-size: 1.05rem; }
.ind-zh { color: var(--ink-2); font-size: var(--fs-small); }
.ind-count {
  flex: 0 0 auto;
  font-size: var(--fs-label); font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: var(--r-pill);
  padding: 4px 10px;
}

/* ============ industry page: scene list ============ */
.back-link {
  display: inline-block; margin-bottom: 10px;
  color: var(--accent); font-size: var(--fs-small); font-weight: 700;
  text-decoration: none;
  padding: 6px 0;
}
.back-link:hover { text-decoration: underline; }
.scene-list { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.scene-card {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--surface);
  border: 1px solid rgba(46, 38, 32, .07);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-card);
  padding: 16px;
  text-decoration: none; color: inherit;
  transition: transform .15s var(--ease), border-color .15s var(--ease);
}
.scene-card:active { transform: scale(.99); }
.scene-card:hover { border-color: var(--accent); }
.sc-top { display: flex; align-items: center; gap: 8px; }
.sc-title-it { font-weight: 800; font-size: 1.02rem; flex: 1; }
.badge {
  flex: 0 0 auto;
  font-size: var(--fs-label); font-weight: 800;
  color: #fff; background: var(--ink);
  border-radius: var(--r-pill); padding: 2px 9px;
  letter-spacing: .03em;
}
.sc-title-zh { color: var(--ink-2); font-size: var(--fs-small); }
.sc-desc { color: var(--ink-2); font-size: var(--fs-small); margin-top: 2px; }
.sc-meta { margin-top: 6px; font-size: var(--fs-label); color: var(--ink-3); }

/* ============ responsive grids ============ */
@media (min-width: 640px) {
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .scene-list { display: grid; grid-template-columns: repeat(2, 1fr); }
  .wrap { max-width: 960px; }
}