/* ==========================================================================
   Radio Arpeggio PWA - Estilos Principales
   Color base: #000000 (Dark Glassmorphism UI)
   ========================================================================== */

:root {
  --color-base: #000000;
  --color-surface: rgba(18, 18, 20, 0.72);
  --color-surface-hover: rgba(28, 28, 32, 0.85);
  --color-surface-border: rgba(255, 255, 255, 0.12);
  
  --color-accent: #e50914;
  --color-accent-glow: rgba(229, 9, 20, 0.4);
  --color-live: #22c55e;
  --color-warning: #eab308;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition-speed: 0.25s;
  --radius-lg: 24px;
  --radius-md: 14px;
  --radius-full: 9999px;
}

/* Reset básico y configuración global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  font-family: var(--font-family);
  background-color: var(--color-base);
  color: var(--color-text-primary);
  line-height: 1.5;
}

/* Capa de fondo con imagen y difuminado */
.background-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: url('https://www.radioarpeggio.com/radio/assets/background.jpg');
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  filter: brightness(0.35) blur(12px);
  transform: scale(1.08); /* Evita bordes blancos por desenfoque */
  z-index: -1;
  pointer-events: none;
}

/* Envoltorio principal centrado */
.player-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 16px;
}

/* Tarjeta contenedora de la radio */
.player-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Encabezado: Estado En Vivo y Botón Instalar */
.card-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.45);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-text-muted);
  transition: background-color var(--transition-speed);
}

.live-indicator.live .pulse-dot {
  background-color: var(--color-live);
  box-shadow: 0 0 10px var(--color-live);
  animation: pulseAnimation 1.5s infinite ease-in-out;
}

.live-indicator.connecting .pulse-dot {
  background-color: var(--color-warning);
  box-shadow: 0 0 10px var(--color-warning);
  animation: pulseAnimation 0.8s infinite ease-in-out;
}

@keyframes pulseAnimation {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.6; }
}

/* Botón Instalar PWA */
.btn-install {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.btn-install:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

.btn-install .icon-svg {
  width: 15px;
  height: 15px;
}

/* Contenedor y Brillo del Logo */
.logo-container {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 10px auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 170px;
  height: 170px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--color-accent-glow) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.logo-glow.active {
  opacity: 1;
  animation: glowPulse 2.5s infinite alternate ease-in-out;
}

@keyframes glowPulse {
  0% { transform: translate(-50%, -50%) scale(0.95); opacity: 0.4; }
  100% { transform: translate(-50%, -50%) scale(1.15); opacity: 0.85; }
}

.station-logo {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.6));
  transition: transform 0.4s ease;
}

.station-logo.playing {
  transform: scale(1.02);
}

/* Información de la emisora */
.station-info {
  text-align: center;
  margin-bottom: 14px;
}

.station-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.station-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.station-domain {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-decoration: none;
  margin-top: 4px;
  transition: color var(--transition-speed);
}

.station-domain:hover {
  color: var(--color-text-primary);
  text-decoration: underline;
}

/* Visualizador de Barras de Audio */
.equalizer-container {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  height: 22px;
  margin-bottom: 20px;
}

.equalizer-bar {
  width: 3.5px;
  height: 4px;
  background-color: var(--color-accent);
  border-radius: 2px;
  transition: height 0.15s ease;
}

.equalizer-container.active .bar-1 { animation: waveAnimation 0.8s infinite ease-in-out alternate; }
.equalizer-container.active .bar-2 { animation: waveAnimation 1.1s infinite 0.15s ease-in-out alternate; }
.equalizer-container.active .bar-3 { animation: waveAnimation 0.7s infinite 0.3s ease-in-out alternate; }
.equalizer-container.active .bar-4 { animation: waveAnimation 1.2s infinite 0.1s ease-in-out alternate; }
.equalizer-container.active .bar-5 { animation: waveAnimation 0.9s infinite 0.25s ease-in-out alternate; }

@keyframes waveAnimation {
  0% { height: 4px; }
  100% { height: 22px; }
}

/* Control Play/Pausa principal */
.playback-controls {
  margin-bottom: 22px;
}

.btn-play-pause {
  width: 78px;
  height: 78px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, #ff1a2b 0%, #b80010 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(229, 9, 20, 0.45);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.btn-play-pause:hover {
  transform: scale(1.06);
  box-shadow: 0 12px 30px rgba(229, 9, 20, 0.6);
}

.btn-play-pause:active {
  transform: scale(0.96);
}

.control-icon {
  width: 34px;
  height: 34px;
}

/* Spinner de carga */
.spinner {
  width: 30px;
  height: 30px;
  border: 3.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Control de Volumen */
.volume-container {
  width: 100%;
  max-width: 280px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.35);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-mute {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-speed);
}

.btn-mute:hover {
  color: var(--color-text-primary);
}

.volume-icon {
  width: 20px;
  height: 20px;
}

.volume-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 5px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--color-text-primary);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}

.volume-slider::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border: none;
  border-radius: 50%;
  background: var(--color-text-primary);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}

/* Redes Sociales */
.social-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 18px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-speed);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.18);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

.social-link svg {
  width: 18px;
  height: 18px;
}

/* Pie de tarjeta */
.card-footer {
  font-size: 0.74rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Modal iOS */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
  animation: fadeIn 0.25s ease-out;
}

.modal-card {
  background: #18181b;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 360px;
  padding: 22px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8);
  animation: slideUp 0.3s ease-out;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.btn-close-modal {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  transition: color var(--transition-speed);
}

.btn-close-modal:hover {
  color: var(--color-text-primary);
}

.modal-intro {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

.ios-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ios-step-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--color-text-primary);
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.ios-icon-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 8px;
  border-radius: 6px;
  margin-top: 6px;
  font-size: 0.78rem;
  color: #38bdf8;
}

.ios-icon-badge svg {
  width: 14px;
  height: 14px;
}

.modal-footer {
  margin-top: 20px;
}

.btn-action-modal {
  width: 100%;
  padding: 10px;
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition-speed);
}

.btn-action-modal:hover {
  opacity: 0.9;
}

/* Notificación Toast */
.toast-message {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(28, 28, 30, 0.95);
  color: #ffffff;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
  z-index: 2000;
  text-align: center;
  max-width: 90%;
  animation: fadeIn 0.3s ease;
}

/* Clases de Utilidad */
.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsividad para pantallas muy pequeñas */
@media (max-width: 360px) {
  .player-card {
    padding: 18px 14px;
  }
  .logo-container {
    width: 160px;
    height: 160px;
  }
  .btn-play-pause {
    width: 68px;
    height: 68px;
  }
}