/* ═══════════════════════════════════════
   LiuLiDS 琉璃3D展厅 — 全局样式
   ═══════════════════════════════════════ */

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

:root {
  --warm: #FF6D3B;
  --mint: #2EC4B6;
  --sky: #5C6BC0;
  --wine: #9E2A2B;
  --xia: #8B5CF5;
  --glass-bg: rgba(19, 19, 32, 0.85);
  --glass-border: rgba(139, 92, 245, 0.15);
  --text: #E8E4DB;
  --text-dim: #9A918A;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #0a0a12;
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--text);
  -webkit-user-select: none;
  user-select: none;
}

canvas#c {
  display: block;
  width: 100%; height: 100%;
  touch-action: none;
}

.hidden { display: none !important; }

/* ═══════ 加载屏幕 ═══════ */
#loader {
  position: fixed; inset: 0; z-index: 100;
  background: #0a0a12;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.8s ease;
}
#loader.fade-out { opacity: 0; pointer-events: none; }

.loader-content { text-align: center; }

.loader-crystal {
  width: 40px; height: 40px; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--warm), var(--sky), var(--xia));
  border-radius: 10px;
  transform: rotate(45deg);
  animation: crystal-spin 2s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  box-shadow: 0 0 30px rgba(139, 92, 245, 0.3);
}

@keyframes crystal-spin {
  0%, 100% { transform: rotate(45deg) scale(1); }
  50% { transform: rotate(225deg) scale(1.1); }
}

.loader-title {
  font-family: 'Noto Serif SC', serif;
  font-size: 28px; font-weight: 700;
  background: linear-gradient(90deg, var(--warm), var(--mint), var(--sky), var(--xia));
  background-size: 200% 100%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-text 4s ease infinite;
}

@keyframes gradient-text {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.loader-sub {
  font-size: 12px; color: var(--text-dim);
  letter-spacing: 0.3em; margin: 6px 0 24px;
}

.loader-bar {
  width: 160px; height: 3px; margin: 0 auto;
  background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden;
}
.loader-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--warm), var(--mint), var(--sky), var(--xia));
  border-radius: 2px;
  transition: width 0.3s ease;
}

/* ═══════ HUD ═══════ */
#hud {
  position: fixed; inset: 0; z-index: 10;
  pointer-events: none;
}
#hud > * { pointer-events: auto; }

/* 顶部信息 */
#topBar {
  position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px;
  padding: 8px 20px; border-radius: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
}

.zone-name {
  font-family: 'Noto Serif SC', serif;
  font-size: 14px; font-weight: 700; color: var(--text);
}
.zone-num {
  font-size: 10px; color: var(--xia);
  letter-spacing: 0.15em; text-transform: uppercase;
}

/* 展区导航 */
#zoneNav {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 4px;
}

.zone-btn {
  background: var(--glass-bg);
  border: 1px solid transparent;
  color: var(--text-dim); font-size: 11px;
  padding: 6px 12px; border-radius: 8px;
  cursor: pointer; transition: all 0.3s ease;
  font-family: 'Noto Sans SC', sans-serif;
  backdrop-filter: blur(8px);
}
.zone-btn:hover {
  color: var(--text); border-color: var(--glass-border);
}
.zone-btn.active {
  color: var(--xia); border-color: var(--xia);
  background: rgba(139, 92, 245, 0.15);
}

/* 底部播放器 */
#player {
  position: absolute; bottom: 16px; right: 16px;
  display: flex; align-items: center; gap: 10px;
  padding: 6px 14px 6px 6px;
  border-radius: 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
}

.player-btn {
  width: 36px; height: 36px;
  border-radius: 50%; border: none;
  background: var(--xia);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all 0.3s ease;
  flex-shrink: 0;
}
.player-btn:hover { transform: scale(1.08); }
.player-btn:active { transform: scale(0.95); }
.player-btn.playing { animation: ping-glow 2s ease infinite; }

@keyframes ping-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(139,92,245,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(139,92,245,0); }
}

#musicIcon.spinning { animation: disc-spin 3s linear infinite; }

@keyframes disc-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.song-info { display: flex; flex-direction: column; }
.song-title { font-size: 12px; font-weight: 600; color: var(--text); }
.song-artist { font-size: 10px; color: var(--text-dim); }

/* 控制提示 */
#controls-hint {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  font-size: 10px; color: var(--text-dim);
  letter-spacing: 0.08em;
  background: var(--glass-bg);
  padding: 5px 14px; border-radius: 12px;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

/* 十字准心 */
#crosshair {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  pointer-events: none;
  box-shadow: 0 0 6px rgba(139,92,245,0.4);
}

/* ═══════ 移动端 ═══════ */
#mobileControls {
  position: fixed; inset: 0; z-index: 20;
  pointer-events: none;
}
#mobileControls > * { pointer-events: auto; }

#joystickArea {
  position: absolute; bottom: 20px; left: 20px;
  width: 120px; height: 120px;
}

#joystickBase {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: rgba(19,19,32,0.6);
  border: 2px solid rgba(139,92,245,0.2);
  display: flex; align-items: center; justify-content: center;
}

#joystickKnob {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(139,92,245,0.5);
  border: 1px solid rgba(139,92,245,0.4);
  transition: none;
}

#lookArea {
  position: absolute; top: 0; right: 0;
  width: 50%; height: 100%;
}

/* ═══════ 响应式 ═══════ */
@media (max-width: 768px) {
  #zoneNav { display: none; }
  #controls-hint { display: none; }
  #topBar { padding: 6px 14px; }
  .zone-name { font-size: 12px; }
  #player { bottom: 90px; right: 12px; }
}

@media (min-width: 769px) {
  #mobileControls { display: none !important; }
  #joystickArea { display: none !important; }
  #lookArea { display: none !important; }
}