* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #05050a;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  touch-action: none;
}

#game-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: radial-gradient(circle at center, #0f0c1b 0%, #05050a 100%);
}

#game-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
}

#touch-controls {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 540px;
  height: 28%;
  min-height: 150px;
  z-index: 5;
  display: flex;
  pointer-events: auto;
}

.touch-lane {
  flex: 1;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 24px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.02) 65%, rgba(255, 255, 255, 0.06) 100%);
  transition: background 0.03s ease;
  cursor: pointer;
}

.touch-lane:active, .touch-lane.pressed {
  background: linear-gradient(180deg, rgba(0, 240, 255, 0.12) 0%, rgba(255, 0, 128, 0.25) 60%, rgba(0, 255, 200, 0.5) 100%);
  box-shadow: inset 0 -16px 32px rgba(0, 240, 255, 0.5);
  border-top: 2px solid #00f0ff;
}

.key-hint {
  font-size: 15px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.45);
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  letter-spacing: 1px;
  pointer-events: none;
}

.touch-lane.pressed .key-hint {
  color: #fff;
  border-color: #00f0ff;
  background: rgba(0, 240, 255, 0.35);
  box-shadow: 0 0 12px #00f0ff;
}

#hud {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10;
  pointer-events: none;
}

.hud-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: env(safe-area-inset-top, 14px) 18px 8px;
  max-width: 900px;
  margin: 0 auto;
}

.hud-left, .hud-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hud-btn {
  pointer-events: auto;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.hud-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.song-info {
  display: flex;
  flex-direction: column;
}

#hud-song-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

#hud-song-bpm {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
}

.hud-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

#hud-score {
  font-family: monospace, sans-serif;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.6);
}

.progress-bar-wrap {
  width: 140px;
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  overflow: hidden;
}

#progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #00f0ff, #ff007f);
  transition: width 0.1s linear;
}

#hud-acc {
  font-family: monospace, sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: #ffe66d;
}

.gauge-wrap {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
}

#groove-gauge {
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, #ff007f, #9900ff, #00f0ff, #00ff66);
  box-shadow: 0 0 10px #00f0ff;
  transition: width 0.12s ease-out;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  background: rgba(5, 5, 12, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  width: 100%;
  max-width: 460px;
  background: rgba(18, 16, 28, 0.92);
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  padding: 28px 24px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 24px rgba(0, 240, 255, 0.15);
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: center;
  animation: modalFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-card.small {
  max-width: 320px;
}

.modal-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.modal-pill-logo {
  width: 64px;
  height: auto;
  filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.7));
  animation: logoFloat 3s ease-in-out infinite alternate;
}

@keyframes logoFloat {
  from { transform: translateY(-4px) rotate(-3deg); }
  to { transform: translateY(4px) rotate(3deg); }
}

.modal-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #fff 0%, #00f0ff 50%, #ff007f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.modal-sub {
  font-size: 10px;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
}

.song-selector {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.song-card {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.song-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.song-card.active {
  background: rgba(0, 240, 255, 0.12);
  border: 1.5px solid #00f0ff;
  box-shadow: 0 0 16px rgba(0, 240, 255, 0.35);
}

.song-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 2px 8px;
  border-radius: 6px;
  margin-bottom: 4px;
}

.song-badge.easy {
  background: rgba(0, 255, 102, 0.2);
  color: #00ff66;
  border: 1px solid #00ff66;
}

.song-badge.normal {
  background: rgba(0, 240, 255, 0.2);
  color: #00f0ff;
  border: 1px solid #00f0ff;
}

.song-badge.hard {
  background: rgba(255, 0, 128, 0.2);
  color: #ff007f;
  border: 1px solid #ff007f;
}

.song-name {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

.song-meta {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 2px;
}

.controls-guide {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: rgba(0, 0, 0, 0.25);
  padding: 10px;
  border-radius: 10px;
}

.kbd {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-weight: 700;
  font-size: 11px;
  color: #fff;
}

.modal-actions {
  display: flex;
  gap: 10px;
}

.modal-actions.vert {
  flex-direction: column;
}

.primary-btn {
  flex: 1;
  padding: 13px 20px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(135deg, #00f0ff, #0077ff);
  color: #030308;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 18px rgba(0, 240, 255, 0.4);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 240, 255, 0.6);
  filter: brightness(1.1);
}

.primary-btn:active {
  transform: scale(0.98);
}

.secondary-btn {
  padding: 13px 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
}

.result-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

#result-rank {
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #ffd700, #ff007f, #00f0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 16px rgba(255, 215, 0, 0.6));
}

.result-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.85);
}

.result-score-box {
  background: rgba(0, 0, 0, 0.35);
  border-radius: 12px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.res-score-label {
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.5);
}

#result-score {
  font-family: monospace, sans-serif;
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 3px;
  color: #00f0ff;
  text-shadow: 0 0 14px rgba(0, 240, 255, 0.5);
}

.result-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
  background: rgba(255, 255, 255, 0.03);
  padding: 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
}

.stat-name {
  color: rgba(255, 255, 255, 0.6);
}

.stat-name.perfect { color: #ffd700; }
.stat-name.great { color: #00f0ff; }
.stat-name.good { color: #00ff66; }
.stat-name.miss { color: #ff3366; }

.stat-val {
  font-family: monospace, sans-serif;
  font-size: 14px;
  color: #fff;
}

@media (max-width: 600px) {
  .touch-lane {
    padding-bottom: 28px;
  }
  .key-hint {
    display: none;
  }
  .hud-top {
    padding: env(safe-area-inset-top, 10px) 12px 6px;
  }
  #hud-score {
    font-size: 18px;
  }
  .modal-card {
    padding: 22px 18px;
    border-radius: 16px;
    gap: 14px;
  }
  .modal-title {
    font-size: 20px;
  }
  .guide-pc {
    display: none;
  }
  #result-rank {
    font-size: 52px;
  }
  #result-score {
    font-size: 26px;
  }
}