/* ================================================================
   v3.24.1 — Minijuego "Sobrecarga del Núcleo"
   Prefijo .surv-* para evitar colisión con el resto de la app.
   Reusa variables :root de styles.css (--bg2, --cyan, --mag, etc).
================================================================ */

/* ───────────────────── Card en pantalla de Minijuegos ───────────────────── */
.minigames-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 10px 4px 24px;
}
@media (min-width: 600px) {
  .minigames-grid { grid-template-columns: 1fr 1fr; }
}
.mg-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 18px;
  border-radius: var(--r);
  background: var(--bg3);
  border: 1px solid var(--bord2);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  overflow: hidden;
  font-family: 'Exo 2', sans-serif;
}
.mg-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 90% -10%, rgba(0, 229, 255, .25), transparent 60%);
  pointer-events: none;
}
.mg-card:hover, .mg-card:focus-visible {
  background: var(--bg4);
  box-shadow: var(--gcyan);
  transform: translateY(-2px);
  outline: none;
}
.mg-card-icon {
  font-size: 32px;
  line-height: 1;
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, .55));
  animation: surv-bob 3.6s ease-in-out infinite;
}
.mg-card-title {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.mg-card-desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.4;
}
.mg-card-best {
  margin-top: 6px;
  font-size: 12px;
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: .3px;
}
@keyframes surv-bob {
  0%,100% { transform: translateY(0) rotate(-2deg); }
  50%     { transform: translateY(-3px) rotate(2deg); }
}

/* ───────────────────── Override del .screen global ─────────────────────
   El .screen global aplica padding-bottom: 100px !important (espacio para el
   búnker del HUD), overflow-y auto y align-items: center. Para el minijuego
   anulamos esos defaults y usamos layout propio que llena 100dvh sin scroll
   en juego (intro/results sí permiten scroll si la pantalla es muy baja). */
#screen-survival-intro,
#screen-survival-game,
#screen-survival-results {
  background:
    radial-gradient(circle at 18% 8%, rgba(0,229,255,.14), transparent 45%),
    radial-gradient(circle at 82% 92%, rgba(168,85,247,.14), transparent 50%),
    var(--bg);
  align-items: stretch !important;
  justify-content: flex-start !important;
  padding: 0 !important;
  overflow: hidden !important;
}
#screen-survival-intro,
#screen-survival-results {
  overflow-y: auto !important;
  -webkit-overflow-scrolling: touch;
}
/* Bloqueo de scroll DURANTE el juego: la pregunta se adapta al alto disponible. */
#screen-survival-game { overflow: hidden !important; }
.surv-bg-fx {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
  contain: strict;
}
.surv-bg-fx > * { position: absolute; }
.surv-orb {
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(72px);
  opacity: .42;
  will-change: transform;
}
.surv-orb-a {
  background: radial-gradient(circle, var(--cyan), transparent 70%);
  top: -120px; left: -120px;
  animation: surv-drift-a 18s ease-in-out infinite;
}
.surv-orb-b {
  background: radial-gradient(circle, var(--purple), transparent 70%);
  bottom: -120px; right: -100px;
  animation: surv-drift-b 22s ease-in-out infinite;
}
.surv-orb-c {
  background: radial-gradient(circle, var(--mag), transparent 70%);
  top: 35%; left: 55%;
  width: 240px; height: 240px;
  opacity: .25;
  animation: surv-drift-c 26s ease-in-out infinite;
}
@keyframes surv-drift-a {
  0%,100% { transform: translate(0,0) scale(1); }
  50%     { transform: translate(60px, 80px) scale(1.1); }
}
@keyframes surv-drift-b {
  0%,100% { transform: translate(0,0) scale(1); }
  50%     { transform: translate(-50px,-70px) scale(1.15); }
}
@keyframes surv-drift-c {
  0%,100% { transform: translate(0,0) scale(1); opacity: .22; }
  50%     { transform: translate(-100px, 40px) scale(.9); opacity: .35; }
}
.surv-grid {
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 75%);
  animation: surv-grid-pan 30s linear infinite;
}
@keyframes surv-grid-pan {
  0%   { background-position: 0 0, 0 0; }
  100% { background-position: 36px 36px, 36px 36px; }
}
.surv-scanline {
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0,229,255,.05) 50%, transparent 100%);
  background-size: 100% 6px;
  animation: surv-scan 8s linear infinite;
  opacity: .35;
  mix-blend-mode: screen;
}
@keyframes surv-scan {
  0%   { background-position: 0 -100%; }
  100% { background-position: 0 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .surv-orb, .surv-grid, .surv-scanline,
  .mg-card-icon,
  .surv-cta-glow { animation: none !important; }
  /* Antes incluíamos .surv-rule-anim aquí, pero la regla base parte de
     opacity:0 + translateY(10px); si quitamos la animación las tarjetas se
     quedan invisibles (bug que pasaba en localhost cuando el navegador
     reportaba prefers-reduced-motion: reduce). Las dejamos visibles SIN
     animación de entrada. */
  .surv-rule-anim {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ───────────────────── Layout común de pantallas survival ───────────────────── */
.surv-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding:
    calc(env(safe-area-inset-top, 0px) + 14px)
    calc(env(safe-area-inset-right, 0px) + 14px)
    calc(env(safe-area-inset-bottom, 0px) + 16px)
    calc(env(safe-area-inset-left, 0px) + 14px);
  gap: 12px;
  box-sizing: border-box;
}
/* Pantalla de juego: fija al viewport, sin scroll. La caja de pregunta usa
   flex: 1 y limita su crecimiento. */
#screen-survival-game .surv-wrap {
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}
.surv-wrap-intro {
  /* el scroll lo hace el .screen padre, no este wrap */
  min-height: 100%;
}

.surv-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.surv-head h2 {
  font-size: clamp(15px, 4.5vw, 20px);
  font-weight: 900;
  letter-spacing: .6px;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.15;
  background: linear-gradient(90deg, var(--cyan), var(--purple) 60%, var(--mag));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
/* Variante compacta del título: un poco más pequeño y con margen visual a
   los lados, para que no toque las "rejas" del badge/back. Aplica a las
   pantallas de intro y resultados. */
.surv-head h2.surv-title-compact {
  font-size: clamp(13px, 3.6vw, 17px);
  letter-spacing: .4px;
  padding: 0 6px;
}
.surv-head h2 .surv-title-icon {
  -webkit-text-fill-color: initial;
  background: none;
  margin-right: 4px;
  filter: drop-shadow(0 0 8px rgba(0,229,255,.6));
}
.surv-back {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--bord2);
  color: var(--text);
  padding: 6px 11px 6px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .3px;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s ease, border-color .15s ease, transform .1s ease;
}
/* Variante "tight": menos padding interior pero sin pegar la letra al borde.
   Pedido del usuario para que el botón Salir no se vea con tanto aire. */
.surv-back.surv-back-tight {
  padding: 5px 10px 5px 8px;
  font-size: 11.5px;
  gap: 4px;
}
.surv-back:hover { background: rgba(255,255,255,.12); border-color: var(--cyan); }
.surv-back:active { transform: scale(.97); }
.surv-back svg { display: block; }
.surv-back-floating { backdrop-filter: blur(4px); }
.surv-mode-pill {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.6px;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--cyan);
  background: rgba(0,229,255,.10);
  border: 1px solid rgba(0,229,255,.4);
  text-transform: uppercase;
}
/* Variante reducida: el SUPERVIVENCIA / RESULTADOS ocupaba demasiado al lado
   del título. Reducimos tamaño, padding y letter-spacing. */
.surv-mode-pill.surv-mode-pill-sm {
  font-size: 8.5px;
  letter-spacing: 1.1px;
  padding: 3px 7px;
}

/* ───────────────────── Intro: récord + tarjetas de reglas ───────────────────── */
.surv-intro-best-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.surv-intro-best-tile {
  position: relative;
  padding: 14px 16px;
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(0,229,255,.10), rgba(0,229,255,.02));
  border: 1px solid rgba(0,229,255,.30);
  overflow: hidden;
}
.surv-intro-best-tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, rgba(0,229,255,.20), transparent 60%);
  pointer-events: none;
}
.surv-intro-best-tile .label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text3);
}
.surv-intro-best-tile .val {
  margin-top: 4px;
  font-size: 26px;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* CTA "Ver clasificaciones" — abre el modal flotante con Top global + Amigos
   + Mis partidas. Diseño en línea con el resto de tarjetas de la app
   (icono trofeo + título + subtítulo + chevron). Hover con halo cyan/purple. */
/* Versión compacta: la altura mínima depende del contenido (icono + texto en
   2 líneas). Padding bajo para que no robe altura a la pantalla — la intro
   ya tiene 6 cards de reglas + CTA empezar y queremos que entre todo sin
   scroll en pantallas medianas. */
.surv-rankings-cta {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-top: 2px;
  padding: 8px 12px;
  background: linear-gradient(135deg, rgba(0,229,255,.10), rgba(168,85,247,.10));
  border: 1.5px solid rgba(0,229,255,.35);
  border-radius: var(--rsm);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  overflow: hidden;
  transition: border-color .2s ease, transform .12s ease, box-shadow .25s ease;
}
.surv-rankings-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, rgba(0,229,255,.18), transparent 55%);
  pointer-events: none;
}
.surv-rankings-cta:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 22px rgba(0,229,255,.25), 0 4px 14px rgba(0,0,0,.25);
  transform: translateY(-1px);
}
.surv-rankings-cta:active { transform: translateY(0); }
.surv-rankings-cta-ico {
  position: relative;
  z-index: 1;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,229,255,.14);
  border: 1px solid rgba(0,229,255,.45);
  color: var(--cyan);
  flex-shrink: 0;
}
.surv-rankings-cta-ico svg { width: 16px; height: 16px; }
.surv-rankings-cta-text {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
  line-height: 1.15;
}
.surv-rankings-cta-title {
  font-weight: 800;
  font-size: 13px;
  letter-spacing: .3px;
}
.surv-rankings-cta-sub {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--text3);
  letter-spacing: .3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.surv-rankings-cta-arrow {
  position: relative;
  z-index: 1;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  transition: transform .2s ease;
  flex-shrink: 0;
}
.surv-rankings-cta:hover .surv-rankings-cta-arrow { transform: translateX(3px); }

/* ───────────────────── Modal flotante (clasificaciones / historial) ───────────────────── */
.surv-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(5, 5, 18, .72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: surv-modal-fade .2s ease-out;
}
.surv-modal[hidden] { display: none; }
@keyframes surv-modal-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.surv-modal-card {
  position: relative;
  width: 100%;
  max-width: 540px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, rgba(21, 9, 53, .96), rgba(15, 6, 35, .98));
  border: 1px solid rgba(0,229,255,.30);
  border-radius: 18px;
  box-shadow: 0 18px 60px rgba(0,0,0,.55), 0 0 28px rgba(0,229,255,.18);
  overflow: hidden;
  animation: surv-modal-pop .22s cubic-bezier(.2,.8,.2,1);
}
@keyframes surv-modal-pop {
  from { opacity: 0; transform: translateY(12px) scale(.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.surv-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(0,229,255,.08), transparent);
  flex-shrink: 0;
}
.surv-modal-head h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: .8px;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.surv-modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--bord2);
  color: var(--text2);
  cursor: pointer;
  font-family: inherit;
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .1s ease;
}
.surv-modal-close:hover { background: rgba(255,0,110,.12); border-color: var(--mag); color: var(--mag); }
.surv-modal-close:active { transform: scale(.93); }
.surv-modal-body {
  padding: 14px 16px 18px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
/* Bloquea scroll del fondo cuando un modal está abierto. */
body.surv-modal-open { overflow: hidden; }

/* Botón "Ampliar historial" debajo de las 3 últimas partidas. Discreto pero
   visible: borde punteado cian, hover llena. */
.surv-myruns-more {
  display: flex;
  justify-content: center;
  margin-top: 6px;
}
.surv-myruns-more[hidden] { display: none; }
.surv-myruns-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: transparent;
  border: 1px dashed rgba(0,229,255,.45);
  border-radius: 999px;
  color: var(--cyan);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .4px;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s ease, border-color .15s ease, transform .1s ease;
}
.surv-myruns-more-btn:hover { background: rgba(0,229,255,.10); border-style: solid; }
.surv-myruns-more-btn:active { transform: scale(.97); }
.surv-myruns-more-btn svg { display: block; }

/* Lista del historial completo (modal). Reusa .surv-myrun-row. Limita altura
   con max-height + scroll dentro del modal-body (que ya scrollea, pero le
   damos un gap pequeño dedicado). */
.surv-history-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Top 3 global en la pantalla de intro. Reutiliza .surv-results-row para las
   filas. Solo lo envolvemos en un panel con título compacto. */
.surv-intro-top3 {
  margin-top: 4px;
  padding: 10px 12px 12px;
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(168,85,247,.08), rgba(168,85,247,.02));
  border: 1px solid rgba(168,85,247,.30);
}
.surv-intro-top3-title {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 8px;
}
.surv-intro-top3 #surv-intro-top3-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Secciones genéricas de la intro (amigos, últimas partidas). Mismo estilo
   compacto que el panel del Top 3 pero con borde neutro. */
.surv-intro-section {
  margin-top: 4px;
  padding: 10px 12px 12px;
  border-radius: var(--r);
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border);
}
.surv-intro-section-title {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 8px;
}
#surv-intro-friends-list,
#surv-intro-myruns-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Filas de "Tus últimas partidas" — fecha relativa | racha | score.
   Estilo cercano a .surv-results-row pero con 3 celdas distintas. */
.surv-myrun-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 9px 14px;
  border-radius: var(--rsm);
  background: var(--bg2);
  border: 1px solid var(--border);
  font-size: 13px;
}
.surv-myrun-when   { color: var(--text3); font-weight: 600; }
.surv-myrun-streak { color: var(--text2); font-weight: 700; font-variant-numeric: tabular-nums; }
.surv-myrun-score  { color: var(--cyan);  font-weight: 900; font-variant-numeric: tabular-nums; }

/* Fila de "Tus amigos": pos | nombre | racha | record. La cabecera es la misma
   estructura pero con tipografía pequeña/uppercase. */
.surv-friend-row {
  display: grid;
  grid-template-columns: 36px 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 9px 14px;
  border-radius: var(--rsm);
  background: var(--bg2);
  border: 1px solid var(--border);
  font-size: 13px;
}
.surv-friend-row .pos    { font-weight: 900; color: var(--text3); font-variant-numeric: tabular-nums; }
.surv-friend-row .name   { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.surv-friend-row .streak { font-weight: 700; color: var(--text2); font-variant-numeric: tabular-nums; }
.surv-friend-row .score  { font-weight: 900; color: var(--cyan);  font-variant-numeric: tabular-nums; }
.surv-friend-row.is-noplay {
  opacity: .55;
}
.surv-friend-row.is-noplay .score,
.surv-friend-row.is-noplay .streak { color: var(--text3); }
/* Fila del propio jugador en la tabla de amigos (resalte morado). */
.surv-friend-row.is-self {
  background: rgba(168,85,247,.15);
  border-color: var(--purple);
  box-shadow: 0 0 14px rgba(168,85,247,.30);
}
.surv-friend-row.is-self .pos   { color: var(--text); }
.surv-friend-row.is-self .score { color: var(--lime); }
.surv-friend-row.is-self.is-noplay { opacity: .85; }
.surv-friend-self-tag {
  margin-left: 6px;
  display: inline-block;
  padding: 1px 6px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 1.2px;
  background: rgba(168,85,247,.30);
  color: var(--text);
  border: 1px solid rgba(168,85,247,.5);
  vertical-align: middle;
}
.surv-friend-row-head {
  background: transparent;
  border-color: transparent;
  padding: 2px 14px 4px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text3);
}
.surv-friend-row-head .pos,
.surv-friend-row-head .name,
.surv-friend-row-head .streak,
.surv-friend-row-head .score {
  color: var(--text3);
  font-weight: 800;
}

.surv-rules-deck {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}
.surv-rule-card {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--rsm);
  background: var(--bg2);
  border: 1px solid var(--border);
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.surv-rule-card:hover {
  background: var(--bg3);
  border-color: var(--bord2);
  transform: translateX(2px);
}
.surv-rule-ico {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--bord2);
}
.surv-rule-ico-good {
  background: rgba(74,222,128,.12);
  border-color: rgba(74,222,128,.45);
  box-shadow: 0 0 14px rgba(74,222,128,.18);
}
.surv-rule-ico-bad {
  background: rgba(239,68,68,.12);
  border-color: rgba(239,68,68,.45);
  box-shadow: 0 0 14px rgba(239,68,68,.18);
}
.surv-rule-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .3px;
}
.surv-rule-text {
  font-size: 12.5px;
  color: var(--text2);
  line-height: 1.4;
  margin-top: 2px;
}
.surv-rule-text strong {
  color: var(--text);
  background: rgba(0,229,255,.10);
  padding: 0 4px;
  border-radius: 4px;
}
.surv-rule-anim {
  opacity: 0;
  transform: translateY(10px);
  animation: surv-rule-in .45s ease-out forwards;
  animation-delay: var(--d, 0ms);
}
@keyframes surv-rule-in {
  to { opacity: 1; transform: translateY(0); }
}

/* ───────────────────── CTA principal (EMPEZAR) ─────────────────────
   Altura reducida: 18px de padding vertical era demasiado y empujaba todo
   el contenido al hacer scroll. Con 12px sigue siendo táctil cómodo
   (>44px de altura total con la letra a 16px) y entra en pantalla sin
   forzar scroll en móviles medianos. */
.surv-cta {
  position: relative;
  margin-top: 4px;
  padding: 12px 22px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), #00ccb1);
  color: #00131f;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(0,229,255,.45), 0 6px 20px rgba(0,0,0,.35);
  font-family: inherit;
  overflow: hidden;
  transition: transform .12s ease, box-shadow .25s ease, filter .25s ease;
}
.surv-cta:hover { transform: translateY(-2px); filter: brightness(1.08); }
.surv-cta:active { transform: translateY(1px); }
.surv-cta:disabled {
  cursor: progress;
  filter: grayscale(.5) brightness(.85);
  box-shadow: none;
}
.surv-cta-glow {
  position: absolute;
  inset: -2px;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.55) 50%, transparent 70%);
  background-size: 200% 100%;
  animation: surv-cta-shine 3.4s linear infinite;
  pointer-events: none;
  mix-blend-mode: overlay;
}
.surv-cta:disabled .surv-cta-glow { animation: none; opacity: 0; }
@keyframes surv-cta-shine {
  0%   { background-position: 200% 0; }
  100% { background-position: -100% 0; }
}
.surv-cta-label { position: relative; z-index: 1; }
.surv-cta-secondary {
  background: transparent;
  border: 1px solid var(--bord2);
  color: var(--text);
  box-shadow: none;
  font-size: 14px;
  padding: 14px 18px;
  letter-spacing: 1.2px;
}
.surv-cta-secondary:hover { background: var(--bg3); filter: none; }
.surv-cta-secondary .surv-cta-glow { display: none; }

/* ───────────────────── Juego: top bar + HUD + barra térmica ───────────────────── */
.surv-game-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.surv-game-hud {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--rsm);
  backdrop-filter: blur(4px);
}
.surv-tier-badge,
.surv-streak-counter,
.surv-multiplier-chip,
.surv-reserve-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .6px;
  text-transform: uppercase;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--bord2);
  font-variant-numeric: tabular-nums;
}
.surv-tier-badge[data-tier="facil"]   { color: #4ade80; border-color: rgba(74,222,128,.55); background: rgba(74,222,128,.10); }
.surv-tier-badge[data-tier="medio"]   { color: #fbbf24; border-color: rgba(251,191,36,.55); background: rgba(251,191,36,.10); }
.surv-tier-badge[data-tier="dificil"] { color: var(--mag); border-color: rgba(255,0,110,.55); background: rgba(255,0,110,.10); animation: surv-pulse-mag 1.6s ease-in-out infinite; }
@keyframes surv-pulse-mag {
  0%,100% { box-shadow: 0 0 0 0 rgba(255,0,110,.0); }
  50%     { box-shadow: 0 0 14px 0 rgba(255,0,110,.45); }
}
.surv-streak-counter { color: var(--cyan); }
.surv-multiplier-chip { color: var(--purple); }
.surv-multiplier-chip[data-hot="1"] {
  color: var(--orange);
  border-color: rgba(255,149,0,.65);
  background: rgba(255,149,0,.12);
  box-shadow: 0 0 12px rgba(255,149,0,.45);
}
.surv-reserve-chip {
  color: var(--lime);
  border-color: rgba(184,255,0,.55);
  background: rgba(184,255,0,.10);
}

.surv-thermal-wrap {
  position: relative;
  overflow: visible;
  padding-top: 4px;
}
.surv-thermal-track {
  position: relative;
  height: 26px;
  border-radius: 13px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: inset 0 1px 4px rgba(0,0,0,.4);
}
.surv-thermal-bar {
  position: absolute;
  inset: 0;
  width: 100%;
  border-radius: 13px;
  /* width SIN transition: el JS la actualiza cada frame con requestAnimationFrame.
     Una transition aquí provoca saltos visibles ("a cachos") al solaparse con
     las actualizaciones por frame. Solo animamos color y glow al cambiar de estado. */
  transition: background-color .25s ease, box-shadow .25s ease;
  will-change: width;
  background: linear-gradient(180deg, #6ef088, #4ade80);
  box-shadow: 0 0 14px rgba(74,222,128,.55);
}
.surv-thermal-bar[data-state="warn"] {
  background: linear-gradient(180deg, #ffd25e, #fbbf24);
  box-shadow: 0 0 14px rgba(251,191,36,.6);
}
.surv-thermal-bar[data-state="danger"] {
  background: linear-gradient(180deg, #ff6b6b, #ef4444);
  box-shadow: 0 0 16px rgba(239,68,68,.75);
  animation: surv-bar-pulse .9s ease-in-out infinite;
}
@keyframes surv-bar-pulse {
  0%,100% { filter: brightness(1); }
  50%     { filter: brightness(1.25); }
}
.surv-thermal-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 1px;
  color: rgba(0,0,0,.78);
  text-shadow: 0 1px 2px rgba(255,255,255,.30);
  font-variant-numeric: tabular-nums;
}

/* Animación flotante de suma/resta de tiempo */
.surv-time-pop {
  position: absolute;
  left: 50%;
  top: -6px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  z-index: 5;
  animation: surv-pop-rise 1.2s cubic-bezier(.2,.8,.2,1) forwards;
  text-shadow: 0 0 12px currentColor, 0 1px 4px rgba(0,0,0,.7);
}
.surv-time-pop-num { font-size: 28px; line-height: 1; }
.surv-time-pop-note {
  font-size: 11px;
  letter-spacing: 1px;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(0,0,0,.45);
  color: var(--text);
  text-shadow: none;
  border: 1px solid currentColor;
  opacity: .75;
}
.surv-time-pop.is-add { color: #4ade80; }
.surv-time-pop.is-sub { color: #ef4444; }
.surv-time-pop.is-discounted .surv-time-pop-num { color: #fbbf24; }
@keyframes surv-pop-rise {
  0%   { opacity: 0; transform: translate(-50%, 18px) scale(.55); }
  18%  { opacity: 1; transform: translate(-50%, -2px) scale(1.18); }
  35%  { transform: translate(-50%, -14px) scale(1); }
  85%  { opacity: 1; transform: translate(-50%, -56px) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -78px) scale(.95); }
}

/* ───────────────────── Pregunta + opciones ───────────────────── */
.surv-question-box {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  transition: box-shadow .25s ease, border-color .25s ease;
  overflow: hidden;
}
.surv-question-box::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: conic-gradient(from 0deg, rgba(0,229,255,.22), rgba(168,85,247,.18), rgba(255,0,110,.16), rgba(0,229,255,.22));
  filter: blur(28px);
  opacity: .35;
  z-index: 0;
  animation: surv-rotate 18s linear infinite;
}
.surv-question-box > * { position: relative; z-index: 1; }
@keyframes surv-rotate {
  to { transform: rotate(360deg); }
}
.surv-question-cat {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text3);
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
}
.surv-question-text {
  font-size: 18px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--text);
}
.surv-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 4px;
}
@media (min-width: 520px) {
  .surv-options { grid-template-columns: 1fr 1fr; }
}
.surv-opt {
  position: relative;
  padding: 14px 16px;
  border-radius: var(--rsm);
  border: 1px solid var(--bord2);
  background: rgba(255,255,255,.06);
  color: var(--text);
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s ease, border-color .15s ease, transform .1s ease;
  backdrop-filter: blur(4px);
}
.surv-opt:hover { background: rgba(255,255,255,.12); border-color: var(--cyan); }
.surv-opt:active { transform: scale(.98); }
.surv-opt[data-state="ok"] {
  background: rgba(74,222,128,.22);
  border-color: #4ade80;
  color: #d1fae5;
  box-shadow: 0 0 16px rgba(74,222,128,.45);
}
.surv-opt[data-state="bad"] {
  background: rgba(239,68,68,.22);
  border-color: #ef4444;
  color: #fecaca;
  box-shadow: 0 0 16px rgba(239,68,68,.45);
}
.surv-opt:disabled { cursor: default; opacity: .92; }

.surv-question-box.surv-danger {
  animation: surv-shake .35s linear infinite;
  border-color: rgba(239,68,68,.6);
  box-shadow: 0 0 0 2px rgba(239,68,68,.25), 0 0 28px rgba(239,68,68,.5);
}
@keyframes surv-shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-3px); }
  40%     { transform: translateX(3px); }
  60%     { transform: translateX(-2px); }
  80%     { transform: translateX(2px); }
}

.surv-flash-wrong {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: rgba(239,68,68,.28);
  opacity: 0;
  z-index: 9999;
  animation: surv-flash .42s ease-out forwards;
}
@keyframes surv-flash {
  0%   { opacity: 0; }
  20%  { opacity: 1; }
  100% { opacity: 0; }
}
.surv-streak-broken {
  position: fixed;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 2px;
  color: #ef4444;
  text-shadow: 0 0 14px rgba(239,68,68,.85);
  pointer-events: none;
  z-index: 10000;
  animation: surv-streak-fade .9s ease-out forwards;
}
@keyframes surv-streak-fade {
  0%   { opacity: 0; transform: translate(-50%, -30%) scale(.8); }
  20%  { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -55%) scale(1.05); }
}

/* ───────────────────── Resultados ───────────────────── */
.surv-results-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.surv-results-tile {
  padding: 14px;
  border-radius: var(--rsm);
  background: var(--bg2);
  border: 1px solid var(--border);
  text-align: center;
}
.surv-results-tile .label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text3);
}
.surv-results-tile .val {
  font-size: 30px;
  font-weight: 900;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.surv-results-tile.is-record .val {
  background: linear-gradient(180deg, #ffd700, var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
}
.surv-results-toggle {
  display: flex;
  gap: 6px;
  padding: 4px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-top: 4px;
}
.surv-results-toggle button {
  flex: 1;
  padding: 9px 12px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--text2);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  letter-spacing: .5px;
  transition: background .15s ease, color .15s ease;
}
.surv-results-toggle button.active {
  background: var(--cyan);
  color: #002233;
  box-shadow: var(--gcyan);
}
.surv-results-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px 2px;
}
.surv-results-row {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--rsm);
  background: var(--bg2);
  border: 1px solid var(--border);
  font-size: 14px;
}
/* Variante con columna de racha entre nombre y score (Top 3 / Vecinos
   con racha). La racha se pinta más pequeña que el score, en gris/lima
   tenue, para que el récord siga siendo el dato dominante. */
.surv-results-row.has-streak {
  grid-template-columns: 32px 1fr auto auto;
  gap: 10px;
}
.surv-results-row .pos {
  font-weight: 900;
  color: var(--text3);
  font-variant-numeric: tabular-nums;
}
.surv-results-row .name {
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.surv-results-row .streak {
  font-weight: 700;
  font-size: 12px;
  color: var(--text3);
  font-variant-numeric: tabular-nums;
  letter-spacing: .3px;
}
.surv-results-row .streak.streak-empty { opacity: .5; }
.surv-results-row .score {
  font-weight: 900;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.surv-results-row.surv-results-self {
  background: rgba(168,85,247,.15);
  border-color: var(--purple);
  box-shadow: 0 0 14px rgba(168,85,247,.3);
}
.surv-results-row.surv-results-self .pos { color: var(--text); }
.surv-results-row.surv-results-self .score { color: var(--lime); }
.surv-results-row.surv-results-self .streak { color: var(--text2); }
.surv-results-empty {
  padding: 18px;
  text-align: center;
  color: var(--text3);
  font-size: 13px;
}
.surv-results-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding-top: 4px;
}

/* ================================================================
   MEDIA QUERIES — Optimización móvil agresiva
================================================================ */

/* Móvil estándar (≤ 600px): paddings reducidos, fuentes adaptativas, layout
   compacto que entra en una pantalla sin scroll en juego. */
@media (max-width: 600px) {
  .surv-wrap { padding-left: 12px; padding-right: 12px; gap: 10px; }
  .surv-game-hud {
    padding: 8px 10px;
    gap: 6px;
    justify-content: space-between;
  }
  .surv-tier-badge,
  .surv-streak-counter,
  .surv-multiplier-chip,
  .surv-reserve-chip {
    font-size: 11px;
    padding: 5px 9px;
    letter-spacing: .4px;
  }
  .surv-thermal-track { height: 22px; }
  .surv-thermal-label { font-size: 12px; }
  .surv-question-box {
    padding: 14px;
    gap: 10px;
    border-radius: 14px;
  }
  /* En móvil quitamos el conic-gradient + blur del halo: es muy costoso para
     GPU móvil y puede provocar drop de frames (que se traducen en el reloj
     "a saltos"). Sustituimos por gradiente estático mucho más barato. */
  .surv-question-box::before {
    background: linear-gradient(135deg, rgba(0,229,255,.10), rgba(168,85,247,.08));
    filter: none;
    animation: none;
    inset: 0;
  }
  .surv-question-text { font-size: 16px; }
  .surv-options { gap: 8px; }
  .surv-opt {
    padding: 13px 14px;
    font-size: 14.5px;
    min-height: 48px;        /* Apple HIG / Material: touch target mínimo */
    border-radius: 12px;
    backdrop-filter: none;   /* Costoso en Android medio-bajo */
  }
  .surv-cta {
    padding: 11px 16px;
    font-size: 14.5px;
    letter-spacing: 1.4px;
    border-radius: 11px;
  }
  .surv-cta-secondary { padding: 9px 14px; font-size: 13px; }

  /* Intro: tarjetas más compactas */
  .surv-intro-best-tile { padding: 12px; }
  .surv-intro-best-tile .val { font-size: 22px; }
  .surv-rule-card { padding: 10px 12px; gap: 10px; grid-template-columns: 38px 1fr; }
  .surv-rule-ico { width: 38px; height: 38px; font-size: 18px; border-radius: 10px; }
  .surv-rule-title { font-size: 13px; }
  .surv-rule-text { font-size: 12px; line-height: 1.35; }

  /* Resultados: tile y filas compactos */
  .surv-results-tile { padding: 12px; }
  .surv-results-tile .val { font-size: 24px; }
  .surv-results-row { padding: 9px 12px; font-size: 13px; }
  .surv-results-toggle button { padding: 8px 10px; font-size: 12px; }

  /* popTime un pelín más pequeño */
  .surv-time-pop-num { font-size: 24px; }
  .surv-time-pop-note { font-size: 10px; }

  /* Fondo: orbes más pequeños y menos blur (la GPU lo agradece) */
  .surv-orb { width: 240px; height: 240px; filter: blur(48px); opacity: .35; }
  .surv-orb-c { width: 180px; height: 180px; }
  .surv-scanline { display: none; }
}

/* Móvil estrecho (≤ 380px, iPhone SE 1ª gen, Android antiguos): chips en
   modo super-compacto, opciones a 1 columna garantizada, sin halos costosos. */
@media (max-width: 380px) {
  .surv-wrap { padding-left: 10px; padding-right: 10px; gap: 8px; }
  .surv-tier-badge,
  .surv-streak-counter,
  .surv-multiplier-chip,
  .surv-reserve-chip {
    font-size: 10px;
    padding: 4px 7px;
    letter-spacing: .3px;
  }
  .surv-game-hud { padding: 7px 8px; }
  .surv-thermal-track { height: 20px; }
  .surv-question-text { font-size: 15px; }
  .surv-opt { font-size: 14px; padding: 12px 12px; min-height: 46px; }
  .surv-rule-card { padding: 9px 10px; }
  .surv-rule-text { font-size: 11.5px; }
  .surv-back { padding: 6px 10px 6px 8px; font-size: 11px; }
  .surv-mode-pill { font-size: 9px; padding: 4px 8px; letter-spacing: 1.2px; }
  .surv-cta { padding: 4px 18px; font-size: 12px; letter-spacing: 1.2px; }
  .surv-rankings-cta { padding: 5px 10px; gap: 8px; }
  .surv-rankings-cta-ico { width: 28px; height: 28px; }
  .surv-rankings-cta-ico svg { width: 14px; height: 14px; }
  .surv-rankings-cta-title { font-size: 12.5px; }
  .surv-rankings-cta-sub { font-size: 10px; }
}

/* Pantallas muy bajas (≤ 640px de alto, móvil en horizontal o pantallas
   pequeñas): la pregunta debe seguir cabiendo. Reducimos huecos verticales. */
@media (max-height: 640px) and (orientation: portrait) {
  .surv-rules-deck { gap: 6px; }
  .surv-rule-card { padding: 8px 10px; }
  .surv-question-box { gap: 8px; padding: 12px; }
}
@media (orientation: landscape) and (max-height: 500px) {
  /* Móvil en horizontal: layout apaisado para la intro. */
  #screen-survival-intro .surv-wrap { padding-top: 10px; padding-bottom: 10px; }
  .surv-rules-deck {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .surv-rule-text { font-size: 11px; }
  /* Y para el juego: reducir aún más el HUD */
  .surv-game-topbar { gap: 6px; }
  .surv-thermal-track { height: 18px; }
  .surv-question-box { padding: 10px 14px; }
  .surv-options {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .surv-opt { padding: 10px 12px; font-size: 13px; min-height: 42px; }
}