/* ==========================================
   OpenClaw 暗黑风格主题
   ========================================== */

:root {
  /* 主色调 */
  --primary: #e85d04;
  --primary-light: #f48c06;
  --primary-dark: #dc2f02;
  
  /* 背景色 */
  --bg-dark: #0d0d0d;
  --bg-card: #1a1a1a;
  --bg-card-hover: #242424;
  --bg-input: #2a2a2a;
  
  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  
  /* 边框 */
  --border-color: #333333;
  --border-glow: rgba(232, 93, 4, 0.3);
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(232, 93, 4, 0.2);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* 过渡 */
  --transition: all 0.3s ease;
}

/* ==========================================
   基础样式
   ========================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

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

/* ==========================================
   头部导航
   ========================================== */

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

/* ==========================================
   主标题区域
   ========================================== */

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.gradient-text {
  background: linear-gradient(135deg, #fff 0%, var(--primary-light) 50%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ==========================================
   项目卡片
   ========================================== */

.projects {
  padding: 40px 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.project-card:hover .card-glow {
  opacity: 1;
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(180deg, rgba(232, 93, 4, 0.1) 0%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.card-content {
  padding: 28px;
  position: relative;
  z-index: 1;
}

.card-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
}

.card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.7;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tag {
  background: var(--bg-input);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.status {
  font-size: 13px;
  font-weight: 500;
}

.status.online {
  color: #22c55e;
}

.status.dev {
  color: var(--primary-light);
}

.btn-launch {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-launch:hover {
  background: var(--primary);
  color: var(--text-primary);
}

/* ==========================================
   统计信息
   ========================================== */

.stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: 40px 0;
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
  display: block;
}

/* ==========================================
   页脚
   ========================================== */

.footer {
  padding: 60px 0 40px;
}

.footer-content {
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
  font-weight: 600;
}

.logo-icon.small {
  font-size: 20px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
}

/* ==========================================
   响应式设计
   ========================================== */

@media (max-width: 768px) {
  .hero-title {
    font-size: 36px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .stats {
    gap: 30px;
  }
  
  .stat-value {
    font-size: 36px;
  }
  
  .nav {
    gap: 20px;
  }
}

/* ==========================================
   动画效果
   ========================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.project-card {
  animation: fadeInUp 0.5s ease forwards;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }

/* 卡片悬停时的光效 */
.project-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(232, 93, 4, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.project-card:hover::before {
  opacity: 1;
}