@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

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

body {
  font-family: 'Microsoft YaHei', sans-serif;
  background: #1a1a2e;
  color: white;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 动态背景 - 方块雨 */
#bgCanvas {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0; opacity: 0.3;
}

.container {
  position: relative; z-index: 1;
  max-width: 1100px; margin: 0 auto;
  padding: 40px 20px;
}

/* 头部 */
header {
  text-align: center;
  padding: 60px 20px 40px;
}

.logo-icon {
  font-size: 80px;
  margin-bottom: 20px;
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

h1 {
  font-size: 52px;
  font-weight: bold;
  margin-bottom: 15px;
  text-shadow: 4px 4px 0 #2d5016, 6px 6px 0 rgba(0,0,0,0.3);
  background: linear-gradient(180deg, #7cb342 0%, #558b2f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 20px;
  color: #aaa;
  margin-bottom: 10px;
}

.tagline {
  display: inline-block;
  background: rgba(124, 179, 66, 0.2);
  border: 2px solid #7cb342;
  padding: 8px 24px;
  border-radius: 4px;
  font-size: 14px;
  color: #aed581;
  margin-top: 10px;
}

/* 游戏卡片区域 */
.section-title {
  font-size: 28px;
  margin: 50px 0 25px;
  padding-left: 15px;
  border-left: 6px solid #7cb342;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin-bottom: 40px;
}

.game-card {
  background: linear-gradient(145deg, #2a2a40, #1f1f33);
  border: 3px solid #3a3a5c;
  border-radius: 8px;
  padding: 30px;
  transition: all 0.3s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, #7cb342, #aed581);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.game-card:hover {
  transform: translateY(-8px);
  border-color: #7cb342;
  box-shadow: 0 15px 40px rgba(124, 179, 66, 0.3);
}

.game-card:hover::before {
  transform: scaleX(1);
}

.game-icon {
  font-size: 50px;
  margin-bottom: 15px;
}

.game-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
  color: #aed581;
}

.game-card p {
  color: #999;
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.game-meta {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tag {
  background: rgba(124, 179, 66, 0.15);
  color: #aed581;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  border: 1px solid rgba(124, 179, 66, 0.3);
}

.play-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background: linear-gradient(180deg, #7cb342, #558b2f);
  color: white;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 4px solid #33691e;
}

.play-btn:hover {
  background: linear-gradient(180deg, #8bc34a, #689f38);
  transform: translateY(-2px);
}

.play-btn:active {
  transform: translateY(2px);
  border-bottom-width: 2px;
}

/* 版本选择区 - 双卡片 */
.version-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin-bottom: 40px;
}

.version-card {
  background: linear-gradient(145deg, #2a2a40, #1f1f33);
  border: 3px solid #3a3a5c;
  border-radius: 12px;
  padding: 40px 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}

.version-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.4);
}

.version-card.js {
  border-color: #4fc3f7;
}
.version-card.js:hover {
  box-shadow: 0 15px 40px rgba(79, 195, 247, 0.3);
}

.version-card.wasm {
  border-color: #ff9800;
}
.version-card.wasm:hover {
  box-shadow: 0 15px 40px rgba(255, 152, 0, 0.3);
}

.version-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: bold;
  margin-bottom: 15px;
}
.version-card.js .version-badge {
  background: rgba(79, 195, 247, 0.2);
  color: #4fc3f7;
  border: 1px solid #4fc3f7;
}
.version-card.wasm .version-badge {
  background: rgba(255, 152, 0, 0.2);
  color: #ff9800;
  border: 1px solid #ff9800;
}

.version-icon {
  font-size: 56px;
  margin-bottom: 15px;
}

.version-card h2 {
  font-size: 26px;
  margin-bottom: 12px;
}
.version-card.js h2 { color: #4fc3f7; }
.version-card.wasm h2 { color: #ff9800; }

.version-card p {
  font-size: 14px;
  color: #aaa;
  line-height: 1.8;
  margin-bottom: 20px;
}

.version-features {
  list-style: none;
  text-align: left;
  margin-bottom: 25px;
  padding: 0 10px;
}
.version-features li {
  padding: 6px 0;
  font-size: 13px;
  color: #ccc;
}
.version-features li::before {
  content: '✓ ';
  font-weight: bold;
}
.version-card.js .version-features li::before { color: #4fc3f7; }
.version-card.wasm .version-features li::before { color: #ff9800; }

.version-btn {
  display: block;
  width: 100%;
  padding: 14px;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: bold;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}
.version-card.js .version-btn {
  background: linear-gradient(180deg, #4fc3f7, #0288d1);
  border-bottom: 4px solid #01579b;
}
.version-card.wasm .version-btn {
  background: linear-gradient(180deg, #ff9800, #f57c00);
  border-bottom: 4px solid #e65100;
}
.version-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.version-note {
  font-size: 11px;
  color: #888;
  margin-top: 12px;
}

@media (max-width: 700px) {
  .version-grid { grid-template-columns: 1fr; }
}

/* 操作说明 */
.controls-box {
  background: rgba(255,255,255,0.05);
  border: 2px solid #3a3a5c;
  border-radius: 8px;
  padding: 30px;
  margin-bottom: 40px;
}

.controls-box h3 {
  font-size: 20px;
  margin-bottom: 20px;
  color: #aed581;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
}

.control-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.key {
  background: #3a3a5c;
  border: 2px solid #555;
  border-radius: 6px;
  padding: 6px 12px;
  min-width: 50px;
  text-align: center;
  font-weight: bold;
  font-size: 14px;
  box-shadow: 0 3px 0 #222;
}

/* 页脚 */
footer {
  text-align: center;
  padding: 40px 20px;
  color: #666;
  font-size: 14px;
  border-top: 1px solid #333;
  margin-top: 60px;
}

footer a {
  color: #7cb342;
  text-decoration: none;
}

/* 提示弹窗 */
#tipModal {
  display: none;
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.tip-content {
  background: #2a2a40;
  border: 3px solid #7cb342;
  border-radius: 10px;
  padding: 40px;
  max-width: 500px;
  text-align: center;
}

.tip-content h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: #aed581;
}

.tip-content p {
  color: #ccc;
  margin-bottom: 25px;
  line-height: 1.8;
}

.tip-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.tip-btn {
  padding: 12px 30px;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  cursor: pointer;
  font-weight: bold;
}

.tip-btn.confirm {
  background: #7cb342;
  color: white;
}

.tip-btn.cancel {
  background: #555;
  color: white;
}

/* 响应式 */
@media (max-width: 600px) {
  h1 { font-size: 36px; }
  .version-card { padding: 30px 20px; }
  .version-card h2 { font-size: 22px; }
}