/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', 'Space Mono', sans-serif;
  background-color: #000;
  color: #fff;
  overflow: hidden;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.app-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* 星空画布 */
.star-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* 返回链接 */
.back-link {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 8px 12px;
  background-color: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 14px;
  z-index: 100;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: all 0.3s ease;
}

.back-link:hover, .back-link:active {
  background-color: rgba(0, 0, 0, 0.7);
  color: #fff;
}

/* 控制面板 */
.controls-panel {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 500px;
  z-index: 10;
}

.controls-toggle {
  width: 50px;
  height: 50px;
  border-radius: 25px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  margin: 0 auto;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: all 0.3s ease;
}

.controls-toggle:hover {
  background: rgba(0, 0, 0, 0.8);
}

.toggle-icon {
  font-size: 24px;
}

.controls-content {
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 15px;
  padding: 20px;
  margin-top: 10px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
  max-height: 60vh;
  overflow-y: auto;
}

.controls-content.active {
  display: block;
}

.control-group {
  margin-bottom: 20px;
}

.control-group h3 {
  font-size: 16px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.layers-container, .theme-container, .actions-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.layer-btn, .theme-btn, .action-btn {
  padding: 8px 15px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.layer-btn:hover, .theme-btn:hover, .action-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.layer-btn.active, .theme-btn.active {
  background: rgba(120, 120, 255, 0.3);
  border-color: rgba(120, 120, 255, 0.5);
  color: #fff;
}

.settings-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.setting label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.setting input[type="range"] {
  width: 60%;
  height: 6px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  -webkit-appearance: none;
}

.setting input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
}

.setting.checkbox {
  justify-content: flex-start;
  gap: 10px;
}

.setting.checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

/* 信息面板 */
.info-panel {
  position: absolute;
  top: 15px;
  left: 15px;
  z-index: 10;
}

.info-toggle {
  width: 30px;
  height: 30px;
  border-radius: 15px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.info-content {
  position: absolute;
  top: 40px;
  left: 0;
  width: 280px;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  padding: 15px;
  display: none;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.info-content.active {
  display: block;
}

.info-content h2 {
  font-size: 18px;
  margin-bottom: 10px;
}

.info-content h3 {
  font-size: 15px;
  margin: 15px 0 5px;
  color: rgba(255, 255, 255, 0.8);
}

.info-content p {
  font-size: 14px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.7);
}

.info-content ul {
  padding-left: 20px;
  margin-top: 5px;
}

.info-content li {
  font-size: 14px;
  margin-bottom: 5px;
  color: rgba(255, 255, 255, 0.7);
}

/* 加载指示器 */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

.loading-text {
  margin-top: 20px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .controls-content {
    padding: 15px;
  }
  
  .layer-btn, .theme-btn, .action-btn {
    padding: 6px 12px;
    font-size: 13px;
  }
  
  .info-content {
    width: 250px;
  }
}

/* 星点样式 */
.star {
  position: absolute;
  border-radius: 50%;
  background-color: #fff;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.star-pulse {
  position: absolute;
  border-radius: 50%;
  background-color: transparent;
  border: 2px solid rgba(255, 255, 255, 0.7);
  pointer-events: none;
  transform: translate(-50%, -50%);
  animation: pulse 2s ease-out infinite;
}

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

/* 星座连接线 */
.constellation-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.5) 50%, rgba(255,255,255,0) 100%);
  transform-origin: 0 0;
  pointer-events: none;
}