/* style.css - Neon/dance aesthetic with glassmorphism */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Rajdhani:wght@400;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --neon-cyan: #00ffff;
  --neon-magenta: #ff00ff;
  --neon-yellow: #ffff00;
  --neon-green: #00ff88;
  --neon-purple: #8844ff;
  --bg-dark: #0a0a1a;
  --bg-card: rgba(20, 20, 50, 0.7);
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --text: #e0e0ff;
  --text-dim: #8888aa;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-dark);
  color: var(--text);
  font-family: 'Rajdhani', 'Segoe UI', sans-serif;
}

/* ============ SCREENS ============ */

.screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 10;
}

.screen.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.95);
}

.screen.active {
  opacity: 1;
  pointer-events: all;
  transform: scale(1);
}

/* ============ BACKGROUND ANIMATION ============ */

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(136, 68, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(0, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(255, 0, 255, 0.1) 0%, transparent 50%);
  z-index: 0;
  animation: bgPulse 8s ease-in-out infinite alternate;
}

@keyframes bgPulse {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* ============ LOADING SCREEN ============ */

#screen-loading {
  background: var(--bg-dark);
  z-index: 100;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--neon-cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

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

.loading-text {
  font-family: 'Orbitron', monospace;
  font-size: 14px;
  color: var(--text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ============ MENU SCREEN ============ */

.game-title {
  font-family: 'Orbitron', monospace;
  font-size: 48px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 0 20px rgba(0, 255, 255, 0.3));
}

.game-subtitle {
  font-size: 18px;
  color: var(--text-dim);
  margin-bottom: 50px;
  letter-spacing: 5px;
  text-transform: uppercase;
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ============ BUTTONS ============ */

.btn {
  font-family: 'Orbitron', monospace;
  font-size: 16px;
  font-weight: 700;
  padding: 16px 48px;
  border: 2px solid var(--neon-cyan);
  background: var(--glass);
  color: var(--neon-cyan);
  cursor: pointer;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  min-width: 280px;
  text-align: center;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  background: rgba(0, 255, 255, 0.1);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.3), inset 0 0 30px rgba(0, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn.btn-magenta {
  border-color: var(--neon-magenta);
  color: var(--neon-magenta);
}

.btn.btn-magenta:hover {
  background: rgba(255, 0, 255, 0.1);
  box-shadow: 0 0 30px rgba(255, 0, 255, 0.3), inset 0 0 30px rgba(255, 0, 255, 0.1);
}

.btn.btn-small {
  font-size: 12px;
  padding: 10px 24px;
  min-width: auto;
}

.btn.btn-green {
  border-color: var(--neon-green);
  color: var(--neon-green);
}

.btn.btn-green:hover {
  background: rgba(0, 255, 136, 0.1);
  box-shadow: 0 0 30px rgba(0, 255, 136, 0.3);
}

/* ============ SONG SELECT ============ */

.screen-header {
  margin-bottom: 30px;
  text-align: center;
}

.screen-header h2 {
  font-family: 'Orbitron', monospace;
  font-size: 24px;
  color: var(--neon-cyan);
  letter-spacing: 3px;
}

.mode-label {
  font-size: 12px;
  color: var(--neon-magenta);
  letter-spacing: 4px;
  margin-top: 5px;
}

#song-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: 800px;
  width: 90%;
  max-height: 50vh;
  overflow-y: auto;
  padding: 10px;
}

.song-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  padding: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.song-card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
  transform: translateY(-3px);
}

.song-title {
  font-family: 'Orbitron', monospace;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.song-artist {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.song-meta {
  display: flex;
  gap: 10px;
  font-size: 12px;
}

.song-bpm {
  color: var(--neon-cyan);
}

.song-difficulty {
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
}

.song-difficulty.easy { color: var(--neon-green); }
.song-difficulty.medium { color: var(--neon-yellow); }
.song-difficulty.hard { color: var(--neon-magenta); }

/* Custom YouTube input */
.custom-yt {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  width: 90%;
  max-width: 500px;
}

.custom-yt input {
  flex: 1;
  padding: 12px 16px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color 0.3s;
  backdrop-filter: blur(10px);
}

.custom-yt input:focus {
  border-color: var(--neon-cyan);
}

.custom-yt input::placeholder {
  color: var(--text-dim);
}

/* ============ LOBBY ============ */

.lobby-info {
  text-align: center;
  margin-bottom: 30px;
  background: rgba(10, 10, 26, 0.75);
  padding: 30px 40px;
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

.lobby-song {
  font-family: 'Orbitron', monospace;
  font-size: 20px;
  color: #fff;
  margin-bottom: 20px;
}

.lobby-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 20px;
}

.lobby-stat {
  text-align: center;
}

.lobby-stat .value {
  font-family: 'Orbitron', monospace;
  font-size: 36px;
  color: var(--neon-cyan);
}

.lobby-stat .label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.bpm-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.join-hint {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 20px;
  text-align: center;
}

.join-hint span {
  color: var(--neon-yellow);
}

/* Join indicator */
.join-indicator {
  display: none;
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--neon-yellow);
  padding: 12px 24px;
  backdrop-filter: blur(10px);
  z-index: 50;
  min-width: 250px;
}

.join-indicator .join-text {
  font-size: 12px;
  color: var(--neon-yellow);
  letter-spacing: 2px;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 8px;
}

.join-progress-track {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
}

.join-progress-bar {
  height: 100%;
  background: var(--neon-yellow);
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--neon-yellow);
}

/* ============ TRANSPARENT SCREENS (lobby, game) ============ */

.screen-transparent {
  background: transparent !important;
}

.screen-transparent::before {
  display: none;
}

/* ============ GAME SCREEN ============ */

#screen-game {
  padding: 0;
}

/* Canvas is always-present background layer */
#game-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

/* YouTube player (hidden) */
#yt-player-container {
  position: fixed;
  bottom: -200px;
  left: -200px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* ============ RESULTS ============ */

#screen-results {
  background: rgba(10, 10, 26, 0.95);
}

.results-header {
  font-family: 'Orbitron', monospace;
  font-size: 28px;
  color: var(--neon-cyan);
  letter-spacing: 5px;
  margin-bottom: 30px;
}

#results-content {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 30px;
  max-width: 800px;
}

.result-card {
  background: var(--bg-card);
  border: 2px solid var(--glass-border);
  padding: 30px;
  min-width: 250px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.result-grade {
  font-family: 'Orbitron', monospace;
  font-size: 72px;
  font-weight: 900;
  margin-bottom: 10px;
  text-shadow: 0 0 30px currentColor;
}

.result-score {
  font-family: 'Orbitron', monospace;
  font-size: 28px;
  color: #fff;
  margin-bottom: 15px;
}

.result-details {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
  font-size: 14px;
}

.detail.perfect { color: #ffff00; }
.detail.great { color: #00ff88; }
.detail.good { color: #00aaff; }
.detail.miss { color: #ff4444; }
.detail.energy { color: #ff4444; }
.detail.variation { color: #00aaff; }
.detail.rhythm { color: #44ff44; }

.result-combo {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

.results-buttons {
  display: flex;
  gap: 16px;
}

/* ============ ERROR SCREEN ============ */

#screen-error {
  background: rgba(10, 10, 26, 0.95);
}

.error-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

#error-title {
  font-family: 'Orbitron', monospace;
  font-size: 24px;
  color: #ff4444;
  margin-bottom: 10px;
}

#error-message {
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 30px;
  max-width: 500px;
  text-align: center;
}

/* ============ SCROLLBAR ============ */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ============ KIDS MODE ============ */

.btn-kids {
  border-image: linear-gradient(135deg, #FF6B6B, #FFD93D, #6BCB77, #4D96FF, #9B59B6) 1;
  color: #FFD93D;
  font-size: 18px;
  animation: kidsButtonPulse 2s ease-in-out infinite;
}

.btn-kids:hover {
  background: rgba(255, 217, 61, 0.1);
  box-shadow: 0 0 30px rgba(255, 217, 61, 0.3), inset 0 0 30px rgba(255, 217, 61, 0.1);
}

@keyframes kidsButtonPulse {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

/* Kids results */
.kids-result-card {
  text-align: center;
}

.kids-result-stars {
  font-size: 24px;
  color: #FFD93D;
  margin-bottom: 10px;
  line-height: 1.3;
  word-wrap: break-word;
  max-width: 300px;
}

.kids-result-score {
  font-family: 'Orbitron', monospace;
  font-size: 36px;
  color: #FFD93D;
  margin-bottom: 15px;
  text-shadow: 0 0 20px rgba(255, 217, 61, 0.5);
}

.kids-result-stat {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 6px;
}

.kids-result-moves {
  font-size: 14px;
  color: var(--neon-purple);
  margin-top: 12px;
  border-top: 1px solid var(--glass-border);
  padding-top: 12px;
}

/* Kids lobby join hint override */
.kids-join-hint {
  font-size: 16px;
  color: #6BCB77;
}

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

@media (max-width: 600px) {
  .game-title {
    font-size: 28px;
  }

  .btn {
    font-size: 13px;
    padding: 12px 32px;
    min-width: 220px;
  }

  #song-list {
    grid-template-columns: 1fr;
  }

  .lobby-stats {
    gap: 20px;
  }

  .lobby-stat .value {
    font-size: 28px;
  }
}