/* 主样式 - 全局样式和基础设置 */

:root {
  --primary-color: #FF6B6B;
  --secondary-color: #4ECDC4;
  --accent-color: #FFE66D;
  --text-dark: #2C3E50;
  --text-light: #7F8C8D;
  --bg-light: #FFF8F0;
  --bg-gradient: linear-gradient(135deg, #FFF8F0 0%, #FFE8D6 100%);
  --border-color: #F0E6D8;
  --shadow: 0 4px 15px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 25px rgba(0,0,0,0.12);
  --card-radius: 16px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
               'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-gradient);
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* 加载状态 */
#loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* 错误提示 */
.error-message {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #f44336;
  color: white;
  padding: 15px 30px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  z-index: 10000;
}

/* 按钮样式 */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s ease;
  font-weight: 500;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.btn-primary {
  background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
  color: white;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(78, 205, 196, 0.4);
}

/* 卡片样式 */
.card {
  background: white;
  border-radius: var(--card-radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}