/* 「赵云与阿斗」文字合成塔防 - 样式 */

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

body {
  font-family: "Microsoft YaHei", "PingFang SC", "SimHei", sans-serif;
  background: #0a0a1a;
  color: #fff;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  width: 100vw;
  height: 100vh;
}

/* ============ 菜单界面 ============ */
.screen {
  display: none;
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.screen.active { display: flex; }

#menu-screen {
  background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 50%, #2a1a3e 100%);
}
#menu-screen::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(255,215,0,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.game-title {
  font-size: 48px;
  font-weight: bold;
  background: linear-gradient(180deg, #ffd700 0%, #ff8c00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  margin-bottom: 8px;
  letter-spacing: 4px;
}
.game-subtitle {
  font-size: 16px;
  color: #aaa;
  margin-bottom: 48px;
  letter-spacing: 2px;
}

.menu-btn {
  width: 200px;
  height: 56px;
  margin: 8px;
  border: 2px solid rgba(255,215,0,0.4);
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  color: #ffd700;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 2px;
  backdrop-filter: blur(4px);
}
.menu-btn:hover {
  background: rgba(255,215,0,0.15);
  border-color: #ffd700;
  transform: scale(1.05);
}
.menu-btn:active { transform: scale(0.95); }

.menu-btn.secondary {
  border-color: rgba(255,255,255,0.2);
  color: #aaa;
  font-size: 16px;
  height: 44px;
}
.menu-btn.secondary:hover {
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}

/* ============ 章节选择 ============ */
#chapter-select-screen {
  background: linear-gradient(135deg, #0f0f2e, #1a1a3e);
}
#chapter-select-screen h2 {
  font-size: 28px;
  color: #ffd700;
  margin-bottom: 24px;
}

.chapter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 600px;
  justify-content: center;
  padding: 20px;
}

.chapter-btn {
  width: 260px;
  height: 56px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  color: #ddd;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.chapter-btn:hover {
  background: rgba(255,200,0,0.1);
  border-color: rgba(255,200,0,0.4);
  color: #ffd700;
}

.back-btn {
  margin-top: 24px;
  padding: 10px 30px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  background: transparent;
  color: #aaa;
  font-size: 14px;
  cursor: pointer;
}
.back-btn:hover { color: #fff; border-color: rgba(255,255,255,0.4); }

/* ============ 战斗界面 ============ */
#battle-screen {
  background: #0a0a1a;
  flex-direction: column;
}

#battle-canvas {
  display: block;
  width: 100%;
  max-width: 800px;
  height: calc(100vh - 140px);
  cursor: pointer;
}

/* HUD */
#hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  z-index: 10;
  font-size: 13px;
}

.hud-left, .hud-right {
  display: flex;
  gap: 16px;
  align-items: center;
}

#hud-wave { color: #ffd700; font-weight: bold; }
#hud-gold { color: #ffcc00; }
#hud-hp { color: #ff6666; }

#adou-hp-bar {
  width: 80px;
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  overflow: hidden;
}
#adou-hp-fill {
  height: 100%;
  width: 100%;
  background: #00cc00;
  border-radius: 3px;
  transition: width 0.3s, background 0.3s;
}

#btn-pause {
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  line-height: 1;
}

/* 技能栏 */
#skill-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.skill-btn {
  width: 58px;
  height: 58px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.skill-btn:hover:not(.on-cd) {
  border-color: rgba(255,215,0,0.5);
  background: rgba(255,215,0,0.1);
}
.skill-btn.on-cd {
  opacity: 0.4;
  cursor: not-allowed;
}

.skill-icon {
  font-size: 24px;
}
.skill-cd {
  position: absolute;
  bottom: 4px;
  font-size: 10px;
  color: #ff6666;
  font-weight: bold;
}

/* ============ 暂停层 ============ */
#pause-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  z-index: 100;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
#pause-overlay.active { display: flex; }
#pause-overlay h2 { font-size: 32px; color: #ffd700; margin-bottom: 16px; }

/* ============ 结算界面 ============ */
#result-screen {
  background: rgba(0,0,0,0.85);
  z-index: 200;
  gap: 16px;
}
#result-screen.active { display: flex; }

.result-title {
  font-size: 40px;
  font-weight: bold;
  margin-bottom: 12px;
}
.result-title.win { color: #ffd700; }
.result-title.lose { color: #ff4444; }

#result-stars {
  font-size: 36px;
  margin-bottom: 16px;
}

.result-stat {
  font-size: 18px;
  color: #ccc;
  margin: 4px 0;
}
.result-stat span { color: #ffd700; font-weight: bold; }

.result-buttons {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

/* ============ Toast ============ */
#toast {
  position: fixed;
  top: 50px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.8);
  color: #ffd700;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: bold;
  z-index: 300;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  border: 1px solid rgba(255,215,0,0.3);
}
#toast.show { opacity: 1; }

/* ============ 响应式 ============ */
@media (max-width: 600px) {
  .game-title { font-size: 32px; }
  .menu-btn { width: 160px; height: 48px; font-size: 17px; }
  .chapter-btn { width: 90%; }
  .skill-btn { width: 48px; height: 48px; }
  .skill-icon { font-size: 20px; }
  #skill-bar { gap: 4px; padding: 8px; }
}