:root {
  --bg: #111418;
  --fg: #e6e8eb;
  --muted: #8e95a0;
  --accent: #ffd900;
  --accent-2: #5dade2;
  --card: #1a1e24;
  --border: #2c323a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.landing {
  max-width: 920px;
  margin: 0 auto;
  padding: 64px 32px 96px;
}

.landing header {
  text-align: center;
  margin-bottom: 64px;
}

.landing h1 {
  font-size: 56px;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.landing .tagline {
  font-size: 18px;
  margin: 0 0 4px;
  color: var(--fg);
}

.landing .subtitle {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 64px;
}

@media (max-width: 700px) {
  .buttons { grid-template-columns: 1fr; }
}

.big-button {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 32px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--fg);
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
  cursor: pointer;
}

.big-button:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(255, 217, 0, 0.12);
}

.big-button .emoji { font-size: 36px; }
.big-button .title { font-size: 24px; font-weight: 600; margin-top: 12px; }
.big-button .sub { font-size: 13px; color: var(--muted); margin-top: 6px; }

.big-button.primary .title { color: var(--accent); }

.techstack h2 {
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.techstack ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.techstack li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.techstack strong { color: var(--accent); }

/* ============= demo page ============= */
.demo-shell {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
}

.demo-top {
  background: rgba(20, 22, 28, 0.85);
  backdrop-filter: blur(8px);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.demo-top a.back {
  font-size: 13px;
  color: var(--muted);
}

.demo-top h1 { font-size: 16px; margin: 0; }

.demo-top .slider-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, monospace;
}

.demo-top .slider-label input[type=range] {
  width: 120px;
  accent-color: var(--accent);
}

.demo-top .slider-label span {
  color: var(--accent);
  min-width: 32px;
}

.demo-top .stats {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, monospace;
}

.demo-canvas-wrap {
  position: relative;
  flex: 1;
  background: #000;
  overflow: hidden;
}

#three-canvas, #overlay-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#overlay-canvas {
  pointer-events: none;
}

#status {
  position: absolute;
  bottom: 16px;
  left: 16px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 12px;
  background: rgba(0,0,0,0.5);
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--accent);
}

/* ============= journal page ============= */
.journal-shell {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 32px 96px;
}

.journal-shell h1 { font-size: 42px; margin-top: 0; }
.journal-shell h2 { margin-top: 48px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.journal-shell pre {
  background: var(--card);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13px;
}
.journal-shell code {
  background: var(--card);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}
.journal-shell table { border-collapse: collapse; width: 100%; margin: 16px 0; }
.journal-shell th, .journal-shell td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}
.journal-shell th { background: var(--card); }

.journal-shell .nav-tabs {
  display: flex;
  gap: 8px;
  margin: 24px 0;
  border-bottom: 1px solid var(--border);
}
.journal-shell .nav-tabs a {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  border-radius: 0;
}
.journal-shell .nav-tabs a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.back-home {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--muted);
}

/* ============= HUD: gauge + odometer ============= */
#hud {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 5;
  pointer-events: none;
  user-select: none;
}

#gauge-canvas {
  width: 280px;
  height: 160px;
  display: block;
}

#odometer {
  margin-top: -22px;
  text-align: center;
  position: relative;
}

/* Foreground "%" — an HTML overlay so it sits crisply above the spinning
   wheels, just right of the digits, at the read-line height. */
.odo-pct {
  position: absolute;
  left: calc(50% + 72px);
  top: 58px;
  transform: translate(-50%, -50%);
  font: 700 30px ui-monospace, SFMono-Regular, monospace;
  color: var(--accent);
  pointer-events: none;
  z-index: 2;
}

/* The odometer digits are real 3D spinning wheels rendered by Three.js
   into this canvas (see initOdometer in demo.js). */
#odometer-canvas {
  width: 200px;
  height: 116px;
  display: block;
  margin: 0 auto;
  /* Fade the top/bottom so digits rolling in and out of the read window
     dim at the edges — focuses the centre reading and reads as a real
     odometer window. */
  -webkit-mask-image: linear-gradient(to bottom, transparent 4%, #000 30%, #000 70%, transparent 96%);
  mask-image: linear-gradient(to bottom, transparent 4%, #000 30%, #000 70%, transparent 96%);
}

.odometer-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}

/* ============= summary overlay ============= */
.summary-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 13, 18, 0.97);
  backdrop-filter: blur(12px);
  overflow-y: auto;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 64px 32px;
  animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.summary-card {
  max-width: 920px;
  width: 100%;
  text-align: center;
  color: var(--fg);
}

.summary-card .numbers {
  margin-bottom: 48px;
}

.summary-card .big {
  font-size: 128px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.summary-card .big .slash {
  color: var(--muted);
  margin: 0 8px;
}

.summary-card .label {
  font-size: 18px;
  color: var(--muted);
  margin-top: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.summary-card .cta {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  color: var(--fg);
}

.summary-card .pitch {
  font-size: 18px;
  line-height: 1.55;
  color: var(--fg);
  max-width: 720px;
  margin: 0 auto 48px;
}

.summary-card .grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 10px;
  margin: 32px auto 48px;
  max-width: 760px;
}

.summary-card .grid .cell {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 6px;
  border: 2px solid var(--border);
}

.summary-card .grid .cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.summary-card .grid .cell.hit {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.summary-card .grid .cell.miss {
  border-color: #cf4040;
  opacity: 0.6;
}

.summary-card .grid .cell span {
  position: absolute;
  inset: auto 0 0 0;
  font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-weight: 700;
  text-align: center;
  background: rgba(0, 0, 0, 0.72);
  color: var(--accent);
  padding: 2px 0;
}

.summary-card .grid .cell.miss span {
  color: #ff8080;
}

.summary-card .buttons-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.summary-card button {
  background: var(--accent);
  color: #111;
  border: none;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.summary-card button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 217, 0, 0.25);
}

.summary-card button.secondary {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.summary-card button.secondary:hover {
  background: rgba(255, 217, 0, 0.12);
}