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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, #1a1c20 0%, #2c3e50 100%);
  min-height: 100vh;
  padding: 20px;
  color: #fff;
  visibility: hidden;
}

body.loaded {
  visibility: visible;
}

.game-container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  padding: 25px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.game-board {
  width: 100%;
  height: 500px;
  background: linear-gradient(to bottom, #2c3e50, #34495e);
  position: relative;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.3);
}

.tower-slots {
  display: grid;
  width: 100%;
  height: 100%;
  gap: 12px;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: repeat(7, 1fr);
  justify-content: center;
  align-content: center;
}

.grid-cell {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.tower-slot {
  width: 54px;
  height: 54px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px dashed rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(5px);
  position: relative;
  overflow: hidden;
}

.tower-slot:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.05);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.tower {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: bold;
  color: white;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  transition: transform 0.2s;
  z-index: 3;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.tower:hover {
  transform: scale(1.1);
}

.tower::after {
  content: attr(data-level);
  position: absolute;
  bottom: 5px;
  right: 5px;
  font-size: 12px;
}

.path {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 70px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(255, 255, 255, 0.05) 10%,
    rgba(255, 255, 255, 0.05) 90%,
    transparent
  );
  transform: translateY(-50%);
  z-index: 1;
  border-top: 2px solid rgba(255, 255, 255, 0.1);
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.enemy {
  position: absolute;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
  z-index: 2;
  transition: all 0.1s linear;
  display: flex;
  justify-content: center;
  align-items: center;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.enemy-icon {
  font-size: 32px;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.5));
}

.health-bar {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 4px;
  background-color: rgba(231, 76, 60, 0.3);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);
}

.health-bar-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(to right, #2ecc71, #27ae60);
  transition: width 0.2s;
}

.bullet {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
}

.bullet.tesla {
  background: #9b59b6;
  box-shadow: 0 0 10px #9b59b6;
  animation: tesla-spark 0.3s infinite;
}

.bullet.poison {
  background: #27ae60;
  box-shadow: 0 0 10px #27ae60;
  animation: poison-drip 1s infinite;
}

.bullet.ninja {
  background: #34495e;
  box-shadow: 0 0 10px #34495e;
  animation: ninja-star-spin 0.5s infinite linear;
}

@keyframes tesla-spark {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.5);
  }
}

@keyframes poison-drip {
  0% {
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2) rotate(180deg);
  }
  100% {
    transform: translate(-50%, -50%) scale(1) rotate(360deg);
  }
}

@keyframes ninja-star-spin {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.tower-icon {
  font-size: 24px;
  z-index: 2;
}

.tower-range {
  position: absolute;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}

.tower:hover .tower-range {
  opacity: 1;
}

.hit-effect {
  position: absolute;
  width: 20px;
  height: 20px;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.8) 0%,
    rgba(255, 255, 255, 0) 70%
  );
  transform: translate(-50%, -50%);
  animation: hit-animation 0.3s ease-out forwards;
  z-index: 4;
}

@keyframes hit-animation {
  0% {
    transform: translate(-50%, -50%) scale(0.5);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(2);
    opacity: 0;
  }
}

/* 修改塔选择面板样式 */
.tower-selection {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 10px;
  padding: 15px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  justify-content: center;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 15px;
}

.tower-option {
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(5px);
  color: white;
  position: relative;
  overflow: visible;
  z-index: 1;
}

.tower-option::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.3s;
}

.tower-option:hover::before {
  opacity: 1;
}

.tower-option:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  z-index: 10;
}

.tower-option.selected {
  border-color: #3498db;
  background: rgba(52, 152, 219, 0.2);
  box-shadow: 0 0 20px rgba(52, 152, 219, 0.3);
}

.tower-option .tower-icon {
  font-size: 28px;
  margin-bottom: 6px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.tower-option .tower-name {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  text-align: center;
  white-space: nowrap;
}

.tower-option .skill-info {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  margin-bottom: 6px;
  line-height: 1.2;
}

.tower-option .cost {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 500;
}

.tower-option.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.tower-option.disabled:hover {
  transform: none;
  box-shadow: none;
}

.tower-option.disabled .cost {
  color: #e74c3c;
}

/* 添加子弹特效样式 */
.bullet.arrow {
  width: 12px;
  height: 4px;
  background: none;
  border-left: 12px solid currentColor;
  border-top: 2px solid transparent;
  border-bottom: 2px solid transparent;
}

.bullet.magic {
  animation: magic-pulse 0.5s infinite;
  box-shadow: 0 0 10px currentColor;
}

.bullet.cannonball {
  width: 12px;
  height: 12px;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

@keyframes magic-pulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
  }
}

/* 添加技能按钮样式 */
.skill-button {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 6px;
  font-size: 10px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid #666;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s;
}

.tower:hover .skill-button {
  opacity: 1;
}

.skill-button.cooldown {
  background: #ccc;
  cursor: not-allowed;
}

/* 添加爆炸效果 */
.explosion {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(231, 76, 60, 0.8) 0%,
    rgba(231, 76, 60, 0) 70%
  );
  transform: translate(-50%, -50%);
  animation: explosion 1s ease-out forwards;
  pointer-events: none;
}

@keyframes explosion {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0;
  }
}

/* 添加倒计时样式 */
.countdown {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 120px;
  font-weight: bold;
  color: #fff;
  text-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  animation: countdown-pulse 1s infinite;
}

@keyframes countdown-pulse {
  0% {
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
  }
}

/* 修改开始按钮样式 */
#start-game {
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  background: linear-gradient(135deg, #2ecc71, #27ae60);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

#start-game:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(46, 204, 113, 0.4);
}

#start-game:disabled {
  background: linear-gradient(135deg, #95a5a6, #7f8c8d);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* 添加波次提示样式 */
.wave-announcement {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 18px;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1000;
}

.wave-announcement.show {
  opacity: 1;
}

/* 修改控制面板样式 */
.control-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  margin-top: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.score,
.lives,
.money {
  font-size: 20px;
  font-weight: 600;
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 8px;
}

.score::before {
  content: "🎯";
}

.lives::before {
  content: "❤️";
}

.money::before {
  content: "💰";
}

/* 添加游戏结束屏幕样式 */
.game-over {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  z-index: 1000;
  animation: fadeIn 0.5s ease-out;
}

.game-over h2 {
  font-size: 32px;
  margin-bottom: 20px;
  color: #e74c3c;
}

.game-over p {
  font-size: 18px;
  margin: 10px 0;
}

#restart-game {
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 18px;
  background-color: #2ecc71;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s;
}

#restart-game:hover {
  background-color: #27ae60;
  transform: translateY(-2px);
}

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

/* 为不同类型的怪物添加动画效果 */
.enemy .enemy-icon {
  animation: float 2s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* Boss怪物特效 */
.enemy[data-type="boss"] .enemy-icon {
  animation: boss-float 1s ease-in-out infinite;
  filter: drop-shadow(0 0 10px rgba(255, 0, 0, 0.5));
}

@keyframes boss-float {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.enemy-death {
  animation: fadeOut 0.2s ease-out forwards;
  pointer-events: none;
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.5);
  }
}

/* 添加闪电效果 */
.lightning {
  position: absolute;
  height: 4px;
  background: linear-gradient(to right, #9b59b6, #8e44ad);
  transform-origin: left center;
  filter: drop-shadow(0 0 10px rgba(155, 89, 182, 0.8));
  animation: lightning-flash 0.2s linear;
  z-index: 5;
}

@keyframes lightning-flash {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}

/* 添加毒云效果 */
.poison-cloud {
  position: absolute;
  width: 300px;
  height: 300px;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    circle,
    rgba(39, 174, 96, 0.4) 0%,
    transparent 70%
  );
  border-radius: 50%;
  animation: poison-pulse 2s infinite ease-in-out;
  z-index: 4;
}

@keyframes poison-pulse {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.4;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.6;
  }
}

/* 添加忍者分身效果 */
.ninja-shadow {
  position: absolute;
  width: 40px;
  height: 40px;
  transform: translate(-50%, -50%);
  background: rgba(52, 73, 94, 0.8);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: ninja-appear 1s ease-out;
  z-index: 3;
}

.ninja-shadow::after {
  content: "🥷";
  font-size: 24px;
  filter: brightness(0.7);
}

@keyframes ninja-appear {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.8;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

/* 修改范围指示器的样式 */
.tower-slot .tower-range {
  display: none;
}

/* 只在有塔的情况下显示范围指示器 */
.tower-slot .tower:hover .tower-range {
  display: block;
  opacity: 0.3;
}

/* 隐藏塔选择面板中的特效 */
.tower-selection .tower-range,
.tower-selection .skill-button {
  display: none !important;
}

/* 调整塔选择面板中的悬停效果 */
.tower-option:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  z-index: 10;
}

/* 在文件开头添加 */
.loading-screen {
  visibility: visible !important;
  transition: opacity 0.3s ease;
}