:root {
  color-scheme: dark;
  --bg: #050505;
  --fg: #f5f5f5;
  --muted: #7c7c7c;
  --accent: #8affc1;
  --border: rgba(255, 255, 255, 0.1);
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  overflow-y: auto;
}

#shader-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.shell {
  position: relative;
  z-index: 1;
  padding: 6vh 8vw;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.terminal {
  border: 1px solid var(--border);
  padding: 2rem;
  backdrop-filter: blur(12px);
  background: rgba(5, 5, 5, 0.75);
}

.terminal__label {
  color: var(--accent);
  margin: 0 0 1rem 0;
  font-size: 0.85rem;
}

h1 {
  margin: 0 0 0.5rem 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.02em;
}

.grid {
  display: grid;
  gap: 1.5rem;
  max-width: 680px;
}

.panel {
  max-width: 980px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.panel h2 {
  margin: 0;
  font-size: 1.5rem;
}

.panel-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.panel-card {
  border: 1px solid var(--border);
  padding: 1.5rem;
  background: rgba(8, 8, 8, 0.65);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.terminal__button {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--fg);
  padding: 0.75rem 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.terminal__button--small {
  padding: 0.5rem 0.9rem;
  font-size: 0.75rem;
}

.terminal__button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.shader-controls,
.htmx-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.fragment {
  border: 1px dashed var(--border);
  padding: 1.5rem;
  background: rgba(12, 12, 12, 0.6);
}

.wasm-output {
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  background: rgba(10, 10, 10, 0.7);
  font-size: 0.9rem;
}

.card h3 {
  margin-top: 0;
}

.muted {
  color: var(--muted);
}