/* Scene: the night city through your window. Layers: canvas → room shade → lamp glow → vignette → grain. */
#mount-scene {
  overflow: hidden;
  pointer-events: none;
  contain: strict;
  /* First paint before the canvas wakes up (and the fallback if canvas is unavailable). */
  background:
    radial-gradient(60% 45% at 50% 100%, color-mix(in srgb, var(--lamp-deep) 12%, transparent), transparent 70%),
    linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 32%, var(--ink-800) 62%, var(--ink-700) 100%);
}

#mount-scene > * { position: absolute; inset: 0; pointer-events: none; }

.scene-canvas {
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s var(--ease);
}
#mount-scene.scene-ready .scene-canvas { opacity: 1; }

/* Room view: pull the city back so glass cards read well. A flat overlay, never a blur. */
.scene-shade {
  background:
    radial-gradient(90% 70% at 50% 55%, color-mix(in srgb, var(--ink-950) 38%, transparent), color-mix(in srgb, var(--ink-950) 64%, transparent));
  opacity: 0;
  transition: opacity 1.8s var(--ease-in-out);
}
body[data-view='room'] .scene-shade { opacity: 1; }
body[data-view='room'].focus-mode .scene-shade { opacity: 1; background-color: color-mix(in srgb, var(--ink-950) 18%, transparent); }

/* Your desk lamp, just out of frame bottom-left: warm light spilling over the sill and the room. */
.scene-lamp {
  background:
    radial-gradient(42vmax 34vmax at 0% 100%, color-mix(in srgb, var(--lamp) 26%, transparent), transparent 70%),
    radial-gradient(90vmax 70vmax at -6% 108%, var(--lamp-glow), transparent 62%),
    radial-gradient(60vmax 40vmax at 104% 104%, color-mix(in srgb, var(--rose) 7%, transparent), transparent 70%);
  transform-origin: 0% 100%;
  opacity: 0.82;
  transition: opacity 2s var(--ease-in-out);
  animation: scene-breathe 9s var(--ease-in-out) infinite alternate;
}
body[data-view='room'] .scene-lamp { opacity: 0.7; }
body[data-phase='focus'] .scene-lamp { opacity: 0.92; }
body[data-view='room'][data-phase='focus'] .scene-lamp { opacity: 0.78; }
body[data-phase='break'] .scene-lamp { opacity: 0.88; }

@keyframes scene-breathe {
  from { transform: scale(1); }
  to { transform: scale(1.045); }
}

.scene-vignette {
  background:
    radial-gradient(120% 95% at 50% 42%, transparent 52%, color-mix(in srgb, var(--ink-950) 72%, transparent) 100%),
    linear-gradient(180deg, color-mix(in srgb, var(--ink-950) 30%, transparent), transparent 18%);
}

/* Film grain: a tiny SVG noise tile, nudged in steps so it shimmers without costing a repaint. */
#mount-scene > .scene-grain {
  inset: -50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .95 0 0 0 0 .91 0 0 0 0 .85 0 0 0 1.6 -.55'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  opacity: 0.09;
  will-change: transform;
  animation: scene-grain 0.9s steps(6) infinite;
}
@keyframes scene-grain {
  0% { transform: translate(0, 0); }
  17% { transform: translate(-6%, 3%); }
  33% { transform: translate(4%, -5%); }
  50% { transform: translate(-3%, -2%); }
  67% { transform: translate(5%, 4%); }
  83% { transform: translate(-5%, 6%); }
  100% { transform: translate(2%, -3%); }
}

#mount-scene.scene-still .scene-lamp,
#mount-scene.scene-still > .scene-grain { animation: none; }

@media (prefers-reduced-motion: reduce) {
  .scene-lamp, #mount-scene > .scene-grain { animation: none; }
  .scene-canvas { transition: opacity 0.4s linear; }
  .scene-shade, .scene-lamp { transition-duration: 0.4s; }
}

@media (max-width: 640px) {
  #mount-scene > .scene-grain { opacity: 0.07; }
}