:root {
  color-scheme: light;
  --bg: #0b0f14;
  --bg-accent: #15212e;
  --text: #f5f1e9;
  --muted: #9aa4b2;
  --entry: #4ad295;
  --exit: #f5b461;
  --panel: rgba(13, 19, 27, 0.78);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1a2633, var(--bg) 60%);
}

h1,
h2 {
  font-family: "Georgia", "Times New Roman", serif;
  font-weight: 600;
  margin: 0;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  color: #000;
  padding: 0.5rem 1rem;
  z-index: 10;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2rem clamp(1.5rem, 5vw, 4rem) 1rem;
}

.brand {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--entry), var(--exit));
  color: #0b0f14;
  font-weight: bold;
}

.legend {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.legend-item {
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.legend-item.entry {
  color: var(--entry);
}

.legend-item.exit {
  color: var(--exit);
}

main {
  padding: 0 1.5rem 3rem;
}

.stage {
  display: flex;
  justify-content: center;
}

.viewport {
  width: min(1100px, 100%);
  margin: 0;
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

#mazeCanvas {
  width: 100%;
  height: clamp(500px, 74vh, 940px);
  border-radius: 16px;
  display: block;
  background: #050608;
}

.viewport-caption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.fallback {
  margin-top: 0.75rem;
  color: var(--exit);
  font-weight: 600;
}

.static-preview {
  margin-top: 3rem;
  padding: 1.5rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(6, 24px);
  gap: 4px;
  margin-top: 1rem;
}

.cell {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
}

.cell.wall {
  background: rgba(255, 255, 255, 0.2);
}

.cell.path {
  background: rgba(255, 255, 255, 0.08);
}

.cell.entry {
  background: var(--entry);
}

.cell.exit {
  background: var(--exit);
}

.noscript {
  padding: 1rem 1.5rem 2rem;
  color: var(--muted);
}

@media (max-width: 700px) {
  .site-header {
    padding: 1.5rem 1.5rem 0.5rem;
  }

  .viewport {
    padding: 1rem;
  }
}