/* 全局样式 - 参考Next.js官网设计 */
:root {
  --primary-color: #000;
  --secondary-color: #333;
  --accent-color: #0070f3;
  --text-primary: #fff;
  --text-secondary: #a1a1aa;
  --text-light: #71717a;
  --bg-primary: #000;
  --bg-secondary: #111;
  --bg-tertiary: #1a1a1a;
  --bg-dark: #000;
  --border-color: #333;
  --shadow-light: 0 1px 3px rgba(255,255,255,0.1);
  --shadow-medium: 0 4px 12px rgba(255,255,255,0.15);
  --shadow-heavy: 0 8px 30px rgba(255,255,255,0.12);
  --gradient-primary: linear-gradient(135deg, #000 0%, #333 100%);
  --gradient-secondary: linear-gradient(135deg, #0070f3 0%, #7928ca 100%);
  --gradient-accent: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 现代化按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-secondary);
  color: white;
  box-shadow: var(--shadow-medium);
}

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

.btn-secondary {
  background: transparent;
  color: var(--accent-color);
  border: 2px solid var(--accent-color);
}

.btn-secondary:hover {
  background: var(--accent-color);
  color: white;
}

/* 现代化卡片样式 */
.card {
  background: var(--bg-secondary);
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--accent-color);
}

/* 渐变背景 */
.gradient-bg {
  background: var(--gradient-primary);
  color: white;
}

.gradient-bg-secondary {
  background: var(--gradient-secondary);
  color: white;
}

.gradient-bg-accent {
  background: var(--gradient-accent);
  color: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .btn {
    padding: 10px 20px;
    font-size: 13px;
  }
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}