:root {
  --bg-0: #120a05;
  --bg-1: #2a170b;
  --brand: #2f6fe8;
  --ink: #f4ead9;
  --panel: rgba(18, 14, 12, 0.82);
  --line: rgba(255, 230, 200, 0.14);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: radial-gradient(120% 90% at 50% 40%, var(--bg-1), var(--bg-0));
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  overflow: hidden;
}
.scene {
  position: fixed; inset: 0;
  display: grid; place-items: center;
}
#stage {
  display: block;
  border-radius: 6px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  opacity: 0;
  transition: opacity 0.8s ease;
}
body.ready #stage { opacity: 1; }

/* loader */
.loader {
  position: absolute; display: grid; justify-items: center; gap: 14px;
  color: #cfe0ff; transition: opacity 0.5s ease;
}
body.ready .loader { opacity: 0; pointer-events: none; }
.loader-logo { color: #8fb5ff; animation: bob 1.6s ease-in-out infinite; }
.loader-bar { width: 160px; height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.12); overflow: hidden; }
.loader-bar i { display: block; height: 100%; background: linear-gradient(90deg, #5aa2ff, #2f6fe8); transform-origin: left; transform: scaleX(0); transition: transform 0.25s ease; }
.loader-text { margin: 0; font-size: 13px; letter-spacing: 0.02em; opacity: 0.75; max-width: 320px; text-align: center; }
@keyframes bob { 50% { transform: translateY(-4px); } }

/* dev controller (testing only — CONFIG.CONTROLS = false removes it) */
.dev { position: fixed; right: 16px; bottom: 16px; z-index: 10; font-size: 12px; }
.dev-pill {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line);
  background: var(--panel); color: #cfe0ff; cursor: pointer; display: grid; place-items: center;
  opacity: 0.35; transition: opacity 0.2s ease, transform 0.2s ease;
  backdrop-filter: blur(8px);
}
.dev-pill:hover, .dev.open .dev-pill { opacity: 1; }
.dev-panel {
  position: absolute; right: 0; bottom: 44px; width: min(520px, calc(100vw - 32px));
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px;
  backdrop-filter: blur(12px); box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
  opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease;
}
.dev.open .dev-panel { opacity: 1; transform: none; pointer-events: auto; }
.dev-row { display: flex; align-items: center; gap: 8px; }
.dev-row + .dev-row { margin-top: 10px; }
.dev-btn, .dev-chip {
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.06); color: var(--ink);
  border-radius: 8px; height: 28px; min-width: 30px; padding: 0 8px; cursor: pointer; font: inherit; font-weight: 600;
}
.dev-btn:hover, .dev-chip:hover { background: rgba(255, 255, 255, 0.12); }
.dev-main { min-width: 40px; background: var(--brand); border-color: transparent; }
.dev-speeds { display: flex; gap: 4px; }
.dev-chip.on { background: rgba(90, 162, 255, 0.28); border-color: rgba(90, 162, 255, 0.6); }
.dev-check { display: flex; align-items: center; gap: 4px; opacity: 0.85; margin-left: auto; cursor: pointer; }
.dev-x { min-width: 28px; }
.dev-time, .dev-len { font-variant-numeric: tabular-nums; opacity: 0.8; width: 54px; }
.dev-len { text-align: right; }
.dev-track { position: relative; flex: 1; height: 18px; cursor: pointer; touch-action: none; }
.dev-track::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.14); }
.dev-fill { position: absolute; left: 0; right: 0; top: 7px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, #ff7a4a, #5aa2ff); transform-origin: left; }
.dev-knob { position: absolute; top: 3px; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; background: #fff; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5); }
.dev-marks i { position: absolute; top: 4px; width: 2px; height: 10px; background: rgba(255, 255, 255, 0.4); }
.dev-log { margin: 8px 0 0; max-height: 96px; overflow: hidden; font: 11px/1.45 Consolas, monospace; opacity: 0.7; white-space: pre; }

@media (max-width: 640px) {
  .dev-speeds .dev-chip { min-width: 0; padding: 0 6px; }
  .dev-check { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .loader-logo { animation: none; }
}