/* ── Page-specific overrides ────────────────────────────────────── */
#runway { height: 500vh; }
#header-panel {
  padding: 24px 32px 16px;
  width: min(700px, 50vw);
  transition: opacity 0.4s ease;
}
#title-overlay {
  display: block;
  margin: 0 auto;
  font-family: 'Major Mono Display', monospace;
  font-size: clamp(20px, 3.5vw, 42px);
  color: #0cc;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
#subtitle {
  font-size: clamp(12px, 1.3vw, 16px);
  color: rgba(255, 255, 255, 0.3);
  margin-top: 4px;
  letter-spacing: 0.12em;
}
#narrative {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%);
  width: min(700px, 80vw);
  min-height: 3.2em;
  z-index: 10;
  pointer-events: none;
  text-align: center;
  font-size: clamp(18px, 2.5vw, 28px);
  line-height: 1.4;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(0, 204, 204, 0.15);
  border-radius: 8px;
  padding: 12px 24px;
  overflow: hidden;
}
.narrative-line {
  position: absolute;
  top: 50%;
  left: 50%;
  width: calc(100% - 48px);
  text-align: center;
  font-size: clamp(18px, 2.5vw, 28px);
  pointer-events: none;
  opacity: 0;
  line-height: 1.4;
  will-change: transform, opacity;
}
.narrative-line:nth-child(1) { color: rgba(140, 200, 100, 0.85); }
.narrative-line:nth-child(2) { color: rgba(230, 160, 80, 0.85); }
.narrative-line:nth-child(3) { color: rgba(180, 220, 200, 0.85); }
.narrative-line:nth-child(4) { color: rgba(100, 220, 220, 0.85); }
.narrative-line:nth-child(5) { color: rgba(50, 230, 160, 0.85); }

/* Font-size override for shared components */
.flow-label { font-size: 13px; }

/* Before/after colour variants */
.flow-card.flow-before { border-color: rgba(180, 120, 255, 0.3); }
.flow-card.flow-after { border-color: rgba(0, 204, 170, 0.3); }
.flow-before .flow-label { color: rgba(180, 120, 255, 0.6); }
.flow-after .flow-label { color: rgba(0, 204, 170, 0.6); }

/* ── Row 3 funnel SVG ────────────────────────────────────────────── */
.funnel-subtitle { font-size: 12px; fill: rgba(255,255,255,0.35); text-anchor: middle; }
.funnel-optuna { stroke: rgba(180,120,255,0.4); }
.funnel-optuna-glow { fill: rgba(180,120,255,0.25); }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 1200px) {
  #header-panel {
    left: 50%;
    transform: translateX(-50%);
    width: min(600px, 90vw);
    transition: opacity 0.4s ease;
  }
}
@media (max-width: 600px) {
  #header-panel {
    padding: 16px 16px 12px;
  }
  #title-overlay {
    font-size: clamp(18px, 6vw, 28px);
  }
  .narrative-line {
    font-size: clamp(16px, 4.5vw, 22px);
  }
  #narrative {
    width: min(500px, 92vw);
    bottom: 84px;
    padding: 10px 12px;
    overflow: hidden;
  }
}

@media (hover: none) {
  #narrative {
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}