/* ============================================================
   PATH OF LUMEN — main.css
   Base reset, layout, game canvas, loading screen, rotate screen
   ============================================================ */

:root {
  /* Palette */
  --bg-0: #05060f;
  --bg-1: #0a0c1e;
  --bg-2: #111433;
  --panel: rgba(18, 21, 48, 0.92);
  --panel-solid: #141736;
  --line: rgba(120, 140, 255, 0.16);
  --ink: #eaf0ff;
  --ink-dim: #93a0c8;
  --cyan: #50e0ff;
  --cyan-soft: #7ef0ff;
  --violet: #9b7bff;
  --amber: #ffd166;
  --magenta: #ff5fa2;
  --green: #69f0ae;
  --red: #ff5b6a;

  --glow-cyan: 0 0 18px rgba(80, 224, 255, 0.55);
  --glow-violet: 0 0 18px rgba(155, 123, 255, 0.5);

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-0);
  font-family: var(--font);
  color: var(--ink);
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  overscroll-behavior: none;
}

.app {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

/* ---------- Screens ---------- */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
  z-index: 1;
}
.screen--active {
  opacity: 1;
  pointer-events: auto;
  z-index: 20;
}
.hidden {
  display: none !important;
}

/* ---------- Loading screen ---------- */
#screen-loading {
  background:
    radial-gradient(120% 120% at 50% 10%, #141a3a 0%, var(--bg-0) 70%);
}
.loading-wrap {
  text-align: center;
  width: min(420px, 82vw);
}
.game-title {
  font-size: clamp(34px, 8vw, 62px);
  font-weight: 900;
  letter-spacing: 6px;
  line-height: 1.05;
  background: linear-gradient(180deg, #ffffff 0%, var(--cyan-soft) 60%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 22px rgba(80, 224, 255, 0.35));
}
.game-title span {
  background: linear-gradient(180deg, var(--cyan-soft) 0%, var(--violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.loading-bar {
  margin: 26px auto 12px;
  height: 8px;
  width: 100%;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  overflow: hidden;
}
.loading-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: var(--glow-cyan);
  transition: width 0.2s ease;
}
.loading-text {
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--ink-dim);
  text-transform: uppercase;
}

/* ---------- Rotate screen ---------- */
#screen-rotate {
  background: var(--bg-0);
  text-align: center;
}
.rotate-icon {
  font-size: 70px;
  color: var(--cyan);
  animation: rotate-shake 1.4s ease-in-out infinite;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 20px var(--glow-cyan));
}
#screen-rotate p {
  letter-spacing: 3px;
  line-height: 1.7;
  color: var(--ink-dim);
  font-size: 16px;
}
@keyframes rotate-shake {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(90deg); }
}

/* ---------- Game canvas ---------- */
.game-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: var(--bg-0);
  touch-action: none;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}