:root {
  --bg0: #ffffff;
  --bg1: #ffffff;
  --bg2: #ffffff;
  --bg3: #ffffff;
  --accent: #ffffff;
  --muted: #94a3b8;
  --text: #ffffff;
  --text-muted: #94a3b8;
  
  --card-radius: 16px;
  --app-radius: 24px;
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
  
  --bg: #05070b;
  --app-bg: #090d16;
  --card-bg: #101622;
  --surface-border: rgba(255, 255, 255, 0.08);

  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --anim-fast: 150ms ease;
  --anim-medium: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html, body {
  height: 100%;
  width: 100%;
  overflow-x: hidden;
  overflow-y: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  position: relative;
  width: min(850px, 100%);
  height: min(90vh, 750px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--app-bg);
  border-radius: var(--app-radius);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* Topbar Profesional y Centrada */
.topbar {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--surface-border);
  background: var(--app-bg);
  flex-shrink: 0;
  text-align: center;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000000;
  font-size: 1.1rem;
}

.brand h1 {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

/* Contenido Principal Alineado al Centro */
.content {
  flex: 1;
  position: relative;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  width: 100%;
}

/* Selector de Juegos */
.game-picker {
  width: 100%;
  max-width: 600px;
  text-align: center;
  transition: opacity var(--anim-medium), transform var(--anim-medium);
  margin: auto;
}

.game-picker[aria-hidden="true"],
.game-view[aria-hidden="true"] {
  display: none;
}

.picker-header {
  margin-bottom: 16px;
  text-align: center;
}

/* Título 3D Avanzado (Sin movimiento, más grande y con gran presencia) */
.title-3d-glow {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #ffffff;
  text-align: center;
  text-transform: uppercase;
  background: linear-gradient(180deg, #ffffff 30%, #94a3b8 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 12px rgba(255, 255, 255, 0.25));
  animation: none;
  margin-bottom: 6px;
}

.picker-shell h2,
.picker-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2px;
  color: var(--text);
  text-align: center;
}

.muted {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* Cuadrícula a 1 columna adaptativa para ocupar toda la pantalla limpiamente */
.tiles {
  display: grid;
  grid-template-columns: 1fr !important;
  gap: 10px;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.span-full {
  grid-column: span 1 !important;
}

/* Tarjetas de alta dopamina */
.card-dopamine {
  position: relative;
  overflow: hidden;
}

.card-dopamine::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.card-dopamine:hover::after {
  opacity: 1;
}

/* Botones de juego optimizados con menor altura vertical pero gran impacto visual */
.game-tile {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  padding: 8px 16px;
  border-radius: var(--card-radius);
  background: var(--card-bg);
  border: 1px solid var(--surface-border);
  cursor: pointer;
  text-align: left;
  text-decoration: none;
  width: 100%;
  box-sizing: border-box;
  transition: transform var(--anim-medium), box-shadow var(--anim-medium), border-color var(--anim-fast);
}

.game-tile:hover {
  transform: translateY(-3px) scale(1.01);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 10px 25px -5px rgba(255, 255, 255, 0.1);
}

.game-tile:active {
  transform: scale(0.97);
}

.tile-visual {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.1);
}

.tile-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  text-align: left;
  overflow: hidden;
  flex: 1;
}

.tile-info strong {
  font-size: 1.05rem;
  color: var(--text);
  font-weight: 700;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.bg-0, .bg-1, .bg-2, .bg-3, .bg-4, .bg-5, .bg-6 { 
  background: rgba(255, 255, 255, 0.06); 
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Vistas de Juego */
.game-view {
  width: 100%;
  max-width: 600px;
  animation: fadeIn var(--anim-medium) ease;
  margin: auto;
  text-align: center;
}

.game-shell {
  background: var(--card-bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--card-radius);
  padding: 24px;
  box-shadow: var(--shadow);
  text-align: center;
  width: 100%;
  box-sizing: border-box;
}

.game-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
  width: 100%;
}

.game-shell h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
}

#gameSubtitle {
  margin-bottom: 16px;
  text-align: center;
}

.tone-picker {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
  width: 100%;
}

.tone-btn, .answer-btn, .back-btn {
  border: none;
  border-radius: 12px;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--anim-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  text-align: center;
}

.tone-btn {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
  flex: 1;
}

/* Botón Normal activo (Azul con sombra azulada) */
.tone-btn[data-tone="normal"].active,
.tone-btn.active:first-child {
  background: #3b82f6;
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.45);
}

/* Botón Hot activo (Rojo con sombra rojiza) */
.tone-btn[data-tone="hot"].active,
.tone-btn.active:last-child {
  background: #ef4444;
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.45);
}

/* EFECTO CARTA DE BARAJA 3D (ALTA DOPAMINA) */
.card-deck-container {
  position: relative;
  width: 100%;
  margin: 10px 0;
  perspective: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card-stack-effect {
  position: absolute;
  width: 94%;
  height: 100%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  top: 8px;
  left: 3%;
  z-index: 1;
  transform: rotate(2deg) scale(0.97);
  pointer-events: none;
}

.dopamine-card {
  position: relative;
  width: 100%;
  background: linear-gradient(145deg, #161f30 0%, #0d121c 100%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
  z-index: 2;
  box-sizing: border-box;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.4s ease;
  animation: cardSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes cardSlideIn {
  0% { opacity: 0; transform: translateY(40px) rotateX(15deg) scale(0.9); }
  100% { opacity: 1; transform: translateY(0) rotateX(0) scale(1); }
}

.dopamine-card:hover {
  transform: translateY(-3px) rotateX(2deg);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7), 0 0 25px rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.3);
}

.card-inner-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
}

.question-shell {
  background: transparent;
  border: none;
  padding: 0;
  text-align: center;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.question {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  text-align: center;
  margin: 0;
}

.answer-actions {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 20px;
}

.dopamine-btn {
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  color: #000000;
  width: 100%;
  padding: 12px;
  font-size: 0.9rem;
  font-weight: 700;
  min-height: 44px;
  border-radius: 12px;
  box-sizing: border-box;
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-align: center;
}

.dopamine-btn:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.4);
}

.dopamine-btn:active {
  transform: scale(0.97);
}

.back-btn {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
  padding: 6px 12px;
  font-size: 0.8rem;
  text-decoration: none;
  border-radius: 8px;
}

/* Gestión de Jugadores Centrada */
.player-setup {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.player-input-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  width: 100%;
}

.player-input-row input {
  flex: 1;
  background: var(--app-bg);
  border: 1px solid var(--surface-border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text);
  font-size: 0.88rem;
  outline: none;
  text-align: center;
  transition: border-color var(--anim-fast);
}

.player-input-row input:focus {
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.player-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  max-height: 80px;
  overflow-y: auto;
  width: 100%;
}

.player-chip {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text);
  text-align: center;
}

.player-chip button {
  background: none;
  border: none;
  color: #ffffff;
  opacity: 0.7;
  cursor: pointer;
  font-weight: bold;
}

.player-chip button:hover {
  opacity: 1;
}

/* Footer Minimalista Centrado */
.footer {
  padding: 12px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.73rem;
  border-top: 1px solid var(--surface-border);
  background: var(--app-bg);
  flex-shrink: 0;
  width: 100%;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ================================================================= */
/* RESPONSIVE AVANZADO                                               */
/* ================================================================= */

@media (max-width: 768px) {
  body {
    padding: 8px;
  }
  
  .app-container {
    width: 100%;
    height: min(95vh, 800px);
    border-radius: 18px;
  }

  .topbar {
    padding: 14px 18px;
  }

  .content {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  html, body {
    height: 100%;
    height: 100dvh;
    overflow-x: hidden;
    overflow-y: hidden;
  }

  body {
    padding: 0;
    align-items: stretch;
    justify-content: stretch;
  }

  .app-container {
    width: 100%;
    height: 100dvh;
    border-radius: 0;
    border: none;
    box-shadow: none;
  }

  .topbar {
    padding: 12px 16px;
  }

  .brand h1 {
    font-size: 1rem;
  }

  .logo {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
    border-radius: 10px;
  }

  .content {
    padding: 12px;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    align-items: center;
    justify-content: center;
  }

  .game-picker {
    margin: auto;
    max-width: 100%;
  }

  .title-3d-glow {
    font-size: 1.8rem;
  }

  .tiles {
    grid-template-columns: 1fr !important;
    gap: 8px;
    padding-bottom: 8px;
    max-width: 100%;
  }

  .span-full {
    grid-column: span 1 !important;
  }

  .game-tile {
    padding: 8px 12px;
    gap: 12px;
  }

  .tile-visual {
    width: 38px;
    height: 38px;
    font-size: 1.1rem;
    border-radius: 10px;
  }

  .tile-info strong {
    font-size: 1rem;
  }

  .game-view {
    max-width: 100%;
    margin: auto;
  }

  .game-shell {
    padding: 16px;
  }

  .dopamine-card {
    padding: 20px 16px;
  }

  .question {
    font-size: 0.98rem;
  }

  .tone-picker {
    gap: 6px;
    margin-bottom: 14px;
  }

  .tone-btn, .answer-btn, .back-btn {
    padding: 8px 12px;
    font-size: 0.8rem;
    min-height: 38px;
  }

  .footer {
    padding: 8px 16px;
    font-size: 0.68rem;
  }
}

@media (max-height: 600px) and (orientation: landscape) {
  .app-container {
    height: 100dvh;
    border-radius: 0;
  }
  
  .content {
    padding: 10px;
  }

  .tiles {
    grid-template-columns: 1fr !important;
  }
  
  .player-list {
    max-height: 50px;
  }
}

/* Estilo cuando la voz está activada */
.icon-btn.active {
    background: var(--primary, #3b82f6);
    color: #fff;
    border-color: transparent;
}

/* Estilo activo para el botón de voz (igual que los botones principales) */
.back-btn.active {
    background: #ffffff !important;
    color: #000000 !important;
    border-color: #ffffff !important;
}