/* ============================================================
   Mambo DVD — salvapantallas
   Paleta y tipografía de OSD de reproductor de DVD (negro puro,
   cian de menú, monoespaciada en versalitas con tracking ancho).
   ============================================================ */

:root {
  /* Color */
  --void:      #000000;
  --osd:       #4de3ff;  /* cian de menú */
  --osd-dim:   #1c5c6e;
  --claim:     #ff3d9a;  /* magenta: momento de esquina */
  --ink:       #e9f6fa;
  --ink-mute:  #7c99a2;  /* AA sobre negro al tamaño de 10-12px del OSD */

  /* Tipografía */
  --mono: "Cascadia Mono", "Consolas", ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  --track: 0.22em;

  /* Estado en vivo, lo escribe app.js */
  --hue: 0;
  --sprite-size: 180px;

  /* Ritmo */
  --gutter: clamp(16px, 3.2vw, 40px);
  --corner-size: clamp(28px, 5vw, 56px);
  /* Las marcas de esquina tienen su propia banda: el HUD y la leyenda
     arrancan pasado ese ancho para no taparlas al reclamarse. */
  --edge-inset: calc(var(--gutter) + var(--corner-size) + 20px);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--void);
  color: var(--ink);
  font-family: var(--mono);
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
}

/* ── Escenario ───────────────────────────────────────────── */

.stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
  cursor: none;
  background: var(--void);
}

.stage.is-idle { cursor: none; }
.stage.is-active { cursor: default; }

/* ── El sprite que rebota ────────────────────────────────── */

.sprite {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--sprite-size);
  height: var(--sprite-size);
  will-change: transform;
  transform: translate3d(0, 0, 0);
  user-select: none;
  -webkit-user-drag: none;
}

.sprite__art,
.sprite__solid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.sprite__art {
  object-fit: contain;
  pointer-events: none;
  -webkit-user-drag: none;
}

/* Silueta plana: el comportamiento literal del logo original de DVD.
   Se pinta en canvas y no con mask-image, porque las máscaras CSS pasan
   por CORS y en file:// (origen "null") el sprite quedaba invisible. */
.sprite__solid {
  filter: drop-shadow(0 0 26px hsl(var(--hue) 100% 58% / 0.5));
}

/* Modo TINTE (por defecto): conserva el peluche, gira su color */
.sprite[data-color="tint"] .sprite__art {
  filter:
    saturate(1.9)
    hue-rotate(calc(var(--hue) * 1deg))
    drop-shadow(0 0 28px hsl(var(--hue) 100% 60% / 0.42));
}
.sprite[data-color="tint"] .sprite__solid { display: none; }

/* Modo SÓLIDO */
.sprite[data-color="solid"] .sprite__art { visibility: hidden; }

/* Modo ORIGINAL: sin recoloreo */
.sprite[data-color="off"] .sprite__art {
  filter: drop-shadow(0 0 22px rgb(255 255 255 / 0.16));
}
.sprite[data-color="off"] .sprite__solid { display: none; }

/* ── Marcas de esquina (elemento firma) ──────────────────── */

.corners { position: absolute; inset: 0; pointer-events: none; }

.corner {
  --edge: 2px;
  position: absolute;
  width: var(--corner-size);
  height: var(--corner-size);
  border: 0 solid var(--osd-dim);
  opacity: 0.5;
  transition: opacity 400ms ease, border-color 400ms ease;
}

.corner[data-corner="tl"] { top: var(--gutter); left: var(--gutter);
  border-top-width: var(--edge); border-left-width: var(--edge); }
.corner[data-corner="tr"] { top: var(--gutter); right: var(--gutter);
  border-top-width: var(--edge); border-right-width: var(--edge); }
.corner[data-corner="br"] { bottom: var(--gutter); right: var(--gutter);
  border-bottom-width: var(--edge); border-right-width: var(--edge); }
.corner[data-corner="bl"] { bottom: var(--gutter); left: var(--gutter);
  border-bottom-width: var(--edge); border-left-width: var(--edge); }

/* Reclamada: se queda encendida con el color exacto que la golpeó */
.corner.is-claimed {
  --edge: 3px;
  opacity: 1;
  border-color: hsl(var(--claimed-hue) 96% 62%);
  box-shadow: 0 0 18px -2px hsl(var(--claimed-hue) 96% 62% / 0.7);
}

.corner.is-hit { animation: cornerHit 900ms cubic-bezier(0.16, 1, 0.3, 1); }

@keyframes cornerHit {
  0%   { transform: scale(1); }
  18%  { transform: scale(2.1); }
  100% { transform: scale(1); }
}

/* ── Impacto de esquina ──────────────────────────────────── */

.impact {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.impact__ring {
  position: absolute;
  top: 0; left: 0;
  width: 22px; height: 22px;
  margin: -11px 0 0 -11px;
  border: 2px solid hsl(var(--hue) 100% 66%);
  border-radius: 50%;
  opacity: 0;
}

.impact__ring.is-live { animation: ring 1100ms cubic-bezier(0.12, 0.8, 0.2, 1); }

@keyframes ring {
  0%   { opacity: 0.95; transform: scale(1);  border-width: 3px; }
  100% { opacity: 0;    transform: scale(46); border-width: 0.5px; }
}

.flash {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: hsl(var(--hue) 100% 70%);
  mix-blend-mode: screen;
}

.flash.is-live { animation: flash 460ms ease-out; }

@keyframes flash {
  0%   { opacity: 0.34; }
  100% { opacity: 0; }
}

/* ── Atmósfera CRT: muy contenida ────────────────────────── */

.grain,
.vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grain {
  opacity: 0.045;
  background: repeating-linear-gradient(
    to bottom,
    rgb(255 255 255 / 0.9) 0 1px,
    transparent 1px 3px
  );
}

.vignette {
  background: radial-gradient(
    ellipse 80% 70% at 50% 50%,
    transparent 40%,
    rgb(0 0 0 / 0.55) 100%
  );
}

/* ── HUD ─────────────────────────────────────────────────── */

.hud {
  position: fixed;
  left: var(--edge-inset);
  bottom: var(--gutter);
  display: flex;
  gap: clamp(20px, 3.6vw, 44px);
  align-items: flex-end;
  padding: 14px 20px 12px;
  border-left: 2px solid var(--osd);
  background: linear-gradient(90deg, rgb(6 22 27 / 0.82), rgb(6 22 27 / 0));
  backdrop-filter: blur(2px);
  transition: opacity 320ms ease, transform 320ms ease;
  pointer-events: none;
}

.hud.is-hidden {
  opacity: 0;
  transform: translateY(8px);
}

.hud__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hud__label {
  font-size: 9px;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--ink-mute);
}

.hud__value {
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 0.9;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.hud__value--word {
  font-size: clamp(13px, 1.8vw, 16px);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-bottom: 4px;
}

/* La cuenta de esquinas es el número que importa */
.hud__stat--lead .hud__value {
  font-size: clamp(34px, 5.4vw, 54px);
  color: var(--osd);
  text-shadow: 0 0 22px hsl(191 100% 60% / 0.45);
}

.hud__stat--lead .hud__label { color: var(--osd); }

.hud__value.is-bumped { animation: bump 700ms cubic-bezier(0.16, 1, 0.3, 1); }

@keyframes bump {
  0%   { transform: scale(1);    color: var(--claim); }
  22%  { transform: scale(1.32); color: var(--claim); }
  100% { transform: scale(1); }
}

/* ── Aviso de audio: solo se muestra cuando falla ────────── */

.audio-alert {
  position: fixed;
  top: var(--gutter);
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  padding: 12px 20px;
  max-width: min(90vw, 620px);
  border: 1px solid var(--claim);
  background: rgb(28 3 15 / 0.92);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: #ffd7e9;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 260ms ease, visibility 260ms;
}

.audio-alert.is-live {
  opacity: 1;
  visibility: visible;
}

.audio-alert kbd {
  font: inherit;
  padding: 1px 6px;
  border: 1px solid var(--claim);
  color: var(--claim);
}

/* ── Leyenda de teclas ───────────────────────────────────── */

.keys {
  position: fixed;
  right: var(--edge-inset);
  bottom: var(--gutter);
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px 18px;
  max-width: min(46vw, 520px);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  transition: opacity 700ms ease;
  pointer-events: none;
}

.keys.is-hidden { opacity: 0; }

.keys kbd {
  font: inherit;
  padding: 2px 6px;
  margin-right: 4px;
  border: 1px solid var(--osd-dim);
  color: var(--osd);
}

/* ── Indicador de pausa ──────────────────────────────────── */

.paused {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 10px 22px;
  border: 1px solid var(--osd);
  font-size: 12px;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--osd);
  background: rgb(0 0 0 / 0.6);
  opacity: 0;
  transition: opacity 200ms ease;
  pointer-events: none;
}

.paused.is-live { opacity: 1; }

/* ── Portada de arranque ─────────────────────────────────── */

.boot {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  background: var(--void);
  z-index: 10;
  transition: opacity 520ms ease, visibility 520ms;
}

.boot.is-gone {
  opacity: 0;
  visibility: hidden;
}

.boot__panel {
  width: min(560px, 100%);
  padding: clamp(28px, 5vw, 48px);
  border: 1px solid var(--osd-dim);
  border-left: 3px solid var(--osd);
  text-align: left;
}

.boot__eyebrow {
  margin: 0 0 22px;
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--osd);
}

.boot__title {
  margin: 0 0 20px;
  font-size: clamp(38px, 9vw, 76px);
  line-height: 0.94;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.boot__title-dim {
  display: block;
  color: var(--osd-dim);
  letter-spacing: 0.3em;
  font-size: 0.42em;
  margin-top: 12px;
}

.boot__note {
  margin: 0 0 32px;
  max-width: 42ch;
  font-size: 12px;
  line-height: 1.85;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
  text-transform: none;
}

.boot__play {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 34px;
  border: 1px solid var(--osd);
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--osd);
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.boot__play:hover,
.boot__play:focus-visible {
  background: var(--osd);
  color: var(--void);
  box-shadow: 0 0 30px -4px var(--osd);
}

.boot__play:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

.boot__glyph { animation: blink 1.6s steps(1, end) infinite; }

@keyframes blink {
  0%, 55%  { opacity: 1; }
  56%, 99% { opacity: 0.25; }
}

/* ── Accesibilidad ───────────────────────────────────────── */

/* El rebote es el contenido, así que se conserva. Lo que se
   apaga es el ruido decorativo alrededor del impacto. */
@media (prefers-reduced-motion: reduce) {
  .impact__ring.is-live,
  .corner.is-hit,
  .hud__value.is-bumped,
  .boot__glyph { animation: none; }

  .flash.is-live { animation: flash 200ms linear; }
  .grain { display: none; }
}

@media (max-width: 720px) {
  .keys { display: none; }
  .hud { gap: 18px; padding: 10px 14px 8px; }
}