/* ═══════════════════════════════════════════════════════════════
   VEHICLE SHOWCASE — Section 06: The Mathematics in Motion
   Hub 05 · Future of Vehicles
   ═══════════════════════════════════════════════════════════════ */

/* ── Warp simulation figure grid ─────────────────────────────── */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--phi-space-lg, 24px);
  margin: var(--phi-space-lg, 24px) 0;
}

.warp-figure {
  margin: 0;
  border: 1px solid var(--phi-gold-dim, #6b5a1e);
  border-radius: 8px;
  overflow: hidden;
  background: var(--phi-bg-card, #0f0f24);
  transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s ease;
}

.warp-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--phi-bg-deep, #06060f);
}

.warp-figure figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono, 'Space Mono', monospace);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--phi-text-dim, #8a7e6a);
  border-top: 1px solid rgba(212, 168, 67, 0.15);
}

.warp-figure figcaption b {
  color: var(--phi-gold, #d4a843);
  letter-spacing: 0.08em;
}

.warp-figure:hover {
  border-color: var(--phi-gold, #d4a843);
  box-shadow: 0 0 24px rgba(212, 168, 67, 0.18),
              0 0 64px rgba(212, 168, 67, 0.06);
  transform: translateY(-2px);
}

/* ── Math blocks (styled equations, no KaTeX) ────────────────── */
.math-block {
  font-family: var(--font-mono, 'Space Mono', monospace);
  color: var(--phi-gold, #d4a843);
  background: rgba(0, 0, 0, 0.4);
  border-left: 3px solid var(--phi-gold, #d4a843);
  border-radius: 0 8px 8px 0;
  padding: var(--phi-space-lg, 24px);
  margin: var(--phi-space-lg, 24px) 0;
  position: relative;
  overflow-x: auto;
}

.math-block::before {
  content: '';
  position: absolute;
  top: 0; left: 3px; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--phi-gold, #d4a843), transparent);
  opacity: 0.5;
}

.math-block .theorem-label {
  display: block;
  font-family: var(--font-heading, 'Cormorant Garamond', serif);
  font-size: 0.8rem;
  color: var(--phi-gold-dim, #6b5a1e);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.math-block .math-eq {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--phi-gold-bright, #f5d77a);
  margin-bottom: 10px;
}

.math-block .math-eq sub,
.math-block .math-eq sup {
  font-size: 0.62em;
}

.math-block .math-note {
  font-size: 0.82rem;
  color: var(--phi-text-dim, #8a7e6a);
}

.math-block .math-cite {
  display: block;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--phi-gold-dim, #6b5a1e);
  letter-spacing: 0.05em;
}

.math-block .qed {
  color: var(--phi-gold, #d4a843);
  margin-left: 8px;
}

/* ── SVG diagram cards ───────────────────────────────────────── */
.diagram-card {
  background: var(--phi-bg-card, #0f0f24);
  border: 1px solid var(--phi-gold-dim, #6b5a1e);
  border-radius: 8px;
  padding: var(--phi-space-lg, 24px);
  margin: var(--phi-space-lg, 24px) 0;
}

.diagram-card.sacred-border {
  position: relative;
}

.diagram-card.sacred-border::after {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(212, 168, 67, 0.12);
  border-radius: 6px;
  pointer-events: none;
}

.diagram-card h4 {
  font-family: var(--font-heading, 'Cormorant Garamond', serif);
  font-size: 1.15rem;
  color: var(--phi-gold, #d4a843);
  letter-spacing: 0.06em;
  margin: 0 0 6px;
}

.diagram-card .diagram-sub {
  font-size: 0.82rem;
  color: var(--phi-text-dim, #8a7e6a);
  margin: 0 0 16px;
}

.diagram-card svg {
  display: block;
  width: 100%;
  height: auto;
}

.diagram-card .diagram-data {
  margin: 14px 0 0;
  font-family: var(--font-mono, 'Space Mono', monospace);
  font-size: 0.75rem;
  color: var(--phi-text-dim, #8a7e6a);
  line-height: 1.7;
}

.diagram-card .diagram-data b {
  color: var(--phi-gold, #d4a843);
}

/* Diagram draw-in + pulse animations */
.diagram-card .draw-arc {
  fill: none;
  stroke-linecap: round;
  opacity: 0;
  transition: opacity 0.6s ease, stroke-dashoffset 1.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.diagram-card.visible .draw-arc {
  opacity: 1;
}

@keyframes warp-pulse {
  0%, 100% { transform: scale(0.95); }
  50%      { transform: scale(1.05); }
}

.diag-pulse {
  transform-origin: center;
  transform-box: fill-box;
  animation: warp-pulse 3s ease-in-out infinite;
}

@keyframes diag-rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.diag-ring {
  transform-origin: center;
  transform-box: fill-box;
  animation: diag-rotate 60s linear infinite;
}

.diag-ring--cw  { animation-direction: normal; }
.diag-ring--ccw { animation-direction: reverse; }

@media (prefers-reduced-motion: reduce) {
  .diag-pulse,
  .diag-ring,
  .diag-flow,
  .diag-lift {
    animation: none !important;
  }
  .diagram-card .draw-arc {
    transition: none;
    opacity: 1;
    stroke-dashoffset: 0 !important;
  }
}

/* Flowing particles (energy pipeline) */
@keyframes diag-flow {
  0%   { offset-distance: 0%; }
  100% { offset-distance: 100%; }
}

/* Lift arrows bob */
@keyframes diag-lift {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(5px); }
}

.diag-lift {
  transform-box: fill-box;
  animation: diag-lift 2s ease-in-out infinite;
}

/* ── Stats donut (conic-gradient, 51 vehicles) ───────────────── */
.stat-donut {
  display: flex;
  align-items: center;
  gap: var(--phi-space-lg, 24px);
  flex-wrap: wrap;
  margin: var(--phi-space-lg, 24px) 0;
}

.stat-donut-chart {
  width: 200px;
  height: 200px;
  flex: 0 0 auto;
  border-radius: 50%;
  position: relative;
  background: conic-gradient(
    #d4a843 0deg 127.1deg,    /* Personal: 18/51 = 127.1° */
    #a08330 127.1deg 232.9deg, /* Drones:    15/51 = 105.9° */
    #f5d77a 232.9deg 289.4deg, /* FTL:        8/51 =  56.5° */
    #b8963c 289.4deg 331.8deg, /* Devices:    6/51 =  42.4° */
    #6b5a1e 331.8deg 352.9deg, /* Robotics:   3/51 =  21.2° */
    #f5e9c8 352.9deg 360deg    /* Ark:        1/51 =   7.1° */
  );
  box-shadow: 0 0 32px rgba(212, 168, 67, 0.15);
}

.stat-donut-chart::after {
  content: '';
  position: absolute;
  top: 25%; left: 25%;
  width: 50%; height: 50%;
  border-radius: 50%;
  background: var(--phi-bg-card, #0f0f24);
}

.stat-donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1;
  font-family: var(--font-mono, 'Space Mono', monospace);
}

.stat-donut-center .donut-total {
  font-size: 2rem;
  color: var(--phi-gold-bright, #f5d77a);
  font-weight: 700;
}

.stat-donut-center .donut-label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--phi-text-dim, #8a7e6a);
  text-transform: uppercase;
}

.stat-donut-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-mono, 'Space Mono', monospace);
  font-size: 0.8rem;
  color: var(--phi-text-dim, #8a7e6a);
  padding: 0;
  margin: 0;
}

.stat-donut-legend li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.stat-donut-legend .swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex: 0 0 auto;
}

/* ── Cost bars ───────────────────────────────────────────────── */
.cost-bars {
  margin: var(--phi-space-lg, 24px) 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cost-bar-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  align-items: center;
  font-family: var(--font-mono, 'Space Mono', monospace);
  font-size: 0.8rem;
}

.cost-bar-row .cost-label {
  color: var(--phi-text-dim, #8a7e6a);
  letter-spacing: 0.05em;
  text-align: right;
}

.cost-bar-track {
  position: relative;
  height: 24px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  overflow: visible;
}

.cost-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--phi-gold-dim, #6b5a1e), var(--phi-gold, #d4a843));
  border-radius: 4px;
  transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.cost-bar::after {
  content: attr(data-cost);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.78rem;
  color: var(--phi-gold, #d4a843);
  white-space: nowrap;
}

.visible .cost-bar {
  width: var(--bar-width, 100%);
}

/* ── Proof citation list ─────────────────────────────────────── */
.proof-cites {
  font-family: var(--font-mono, 'Space Mono', monospace);
  font-size: 0.8rem;
  line-height: 1.9;
  color: var(--phi-text-dim, #8a7e6a);
  padding-left: 20px;
}

.proof-cites code {
  color: var(--phi-gold, #d4a843);
}

/* ── Responsive: single column ≤768px ────────────────────────── */
@media (max-width: 768px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .math-block {
    padding: 16px;
  }

  .math-block .math-eq {
    font-size: 1.05rem;
  }

  .stat-donut-chart {
    width: 160px;
    height: 160px;
  }

  .stat-donut {
    flex-direction: column;
    align-items: flex-start;
  }

  .cost-bar-row {
    grid-template-columns: 70px 1fr;
  }

  .diagram-card {
    padding: 16px;
  }
}

/* ── The Vehicle Law (js/vehicle-law.js) — the License page's design language ── */
.vehicle-law-intro { max-width: 860px; margin: 0 auto var(--phi-space-2xl, 64px); text-align: center; }
.vehicle-law-title { font-family: var(--font-heading, 'Cormorant Garamond', serif); font-size: var(--phi-h2, 2rem); color: var(--phi-text-bright, #f5e9c8); }
.vehicle-law-lede { font-family: var(--font-body, 'Inter', sans-serif); color: var(--phi-text-dim, #9a917a); font-size: var(--phi-body, 1rem); line-height: 1.8; margin-top: var(--phi-space-md, 24px); }
.vehicle-law-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--phi-space-md, 24px); max-width: 1100px; margin: 0 auto var(--phi-space-2xl, 64px); }
.vehicle-law-card { background: var(--phi-bg-card, rgba(20, 18, 12, 0.85)); border: 1px solid var(--phi-stroke, rgba(212, 168, 67, 0.25)); border-radius: 10px; padding: var(--phi-space-lg, 32px); }
.vehicle-law-no { font-family: var(--font-mono, 'Space Mono', monospace); color: var(--phi-gold, #d4a843); font-size: var(--phi-h3, 1.3rem); }
.vehicle-law-name { font-family: var(--font-heading, 'Cormorant Garamond', serif); font-size: var(--phi-h3, 1.3rem); color: var(--phi-text-bright, #f5e9c8); margin-top: var(--phi-space-xs, 8px); }
.vehicle-law-note { font-family: var(--font-body, 'Inter', sans-serif); font-size: var(--phi-caption, 0.85rem); color: var(--phi-text-dim, #9a917a); margin-top: var(--phi-space-sm, 16px); line-height: 1.7; }
.vehicle-law-block { max-width: 860px; margin: 0 auto var(--phi-space-2xl, 64px); padding: var(--phi-space-xl, 48px); background: var(--phi-bg-card, rgba(20, 18, 12, 0.85)); border: 1px solid var(--phi-stroke, rgba(212, 168, 67, 0.25)); border-radius: 12px; }
.vehicle-law-kicker { display: block; font-family: var(--font-sacred, 'Cinzel', serif); font-size: var(--phi-caption, 0.85rem); color: var(--phi-gold, #d4a843); letter-spacing: 0.3em; }
.vehicle-law-heading { font-family: var(--font-heading, 'Cormorant Garamond', serif); font-size: var(--phi-h2, 2rem); color: var(--phi-text-bright, #f5e9c8); margin: var(--phi-space-xs, 8px) 0 var(--phi-space-md, 24px); }
.vehicle-law-para { font-family: var(--font-body, 'Inter', sans-serif); color: var(--phi-text, #cfc6ad); font-size: var(--phi-body, 1rem); line-height: 1.8; margin-top: var(--phi-space-md, 24px); }
.vehicle-law-quote { font-family: var(--font-body, 'Inter', sans-serif); color: var(--phi-gold, #d4a843); font-size: var(--phi-body, 1rem); line-height: 1.8; border-left: 2px solid var(--phi-gold-dim, rgba(212, 168, 67, 0.4)); padding: var(--phi-space-sm, 16px) var(--phi-space-md, 24px); margin: var(--phi-space-md, 24px) 0; font-style: italic; }
.vehicle-law-quote cite { display: block; font-style: normal; font-family: var(--font-mono, 'Space Mono', monospace); font-size: var(--phi-caption, 0.85rem); color: var(--phi-text-dim, #9a917a); margin-top: var(--phi-space-sm, 16px); }
.vehicle-law-cite { font-family: var(--font-mono, 'Space Mono', monospace); font-size: var(--phi-caption, 0.85rem); color: var(--phi-text-dim, #9a917a); }
.vehicle-law-list { list-style: none; padding: 0; display: grid; gap: var(--phi-space-sm, 16px); }
.vehicle-law-item { font-family: var(--font-body, 'Inter', sans-serif); color: var(--phi-text, #cfc6ad); font-size: var(--phi-body, 1rem); line-height: 1.8; display: flex; gap: 0.7em; }
.vehicle-law-mark { color: var(--phi-gold, #d4a843); font-family: var(--font-sacred, 'Cinzel', serif); }
.vehicle-law-table { width: 100%; border-collapse: collapse; margin-top: var(--phi-space-md, 24px); }
.vehicle-law-table th, .vehicle-law-table td { border: 1px solid var(--phi-stroke, rgba(212, 168, 67, 0.25)); padding: 0.6em 0.9em; text-align: left; font-family: var(--font-body, 'Inter', sans-serif); font-size: var(--phi-caption, 0.85rem); color: var(--phi-text, #cfc6ad); }
.vehicle-law-table th { font-family: var(--font-sacred, 'Cinzel', serif); color: var(--phi-gold, #d4a843); letter-spacing: 0.1em; }
.vehicle-law-count { font-family: var(--font-mono, 'Space Mono', monospace); color: var(--phi-gold, #d4a843); }
.vehicle-law-links { display: flex; gap: var(--phi-space-md, 24px); flex-wrap: wrap; margin-top: var(--phi-space-md, 24px); }
.vehicle-law-cta { font-family: var(--font-mono, 'Space Mono', monospace); color: var(--phi-gold, #d4a843); text-decoration: none; border: 1px solid var(--phi-gold-dim, rgba(212, 168, 67, 0.4)); border-radius: 999px; padding: 0.6em 1.6em; letter-spacing: 0.08em; display: inline-block; margin-top: var(--phi-space-sm, 16px); transition: background 0.3s ease; }
.vehicle-law-cta:hover { background: rgba(212, 168, 67, 0.1); }