/* style.css - 快连官网 v2 (全新设计) */
:root {
  --primary: #6a11cb;
  --primary-light: #8e44ad;
  --accent: #ff416c;
  --dark: #121212;
  --light: #ffffff;
  --gray: #888;
  --card-bg: #ffffff;
  --body-bg: #f9f7fe;
  --shadow: 0 10px 30px -15px rgba(106, 17, 203, 0.3);
  --transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

[data-theme="dark"] {
  --card-bg: #1e1e2e;
  --body-bg: #121218;
  --light: #f0f0f0;
  --gray: #a0a0b0;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--body-bg);
  color: var(--dark);
  transition: var(--transition);
}

[data-theme="dark"] body {
  color: var(--light);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1 2rem;
}

/* Header - 深色玻璃拟态 */
header {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(106, 17, 203, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

[data-theme="dark"] header {
  background: rgba(30, 30, 46, 0.8);
  border-bottom: 1px solid rgba(106, 17, 203, 0.3);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--dark);
  font-weight: 600;
  position: relative;
  padding: 0.3rem 0;
}

[data-theme="dark"] nav a {
  color: var(--light);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(to right, var(--primary), var(--accent));
  transition: var(--transition);
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--primary);
  margin-left: 1.5rem;
}

/* Hero Section - 视差背景 */
.hero {
  min-height: 50vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 10% 20%, rgba(106, 17, 203, 0.1) 0%, transparent 30%),
              radial-gradient(circle at 90% 80%, rgba(255, 65, 108, 0.1) 0%, transparent 30%);
  z-index: -1;
}

.hero-content {
  max-width: 650px;
  z-index: 2;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--gray);
}

/* Features - 卡片悬浮 */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 4rem 0;
}

.feature-card {
  background: var(--card-bg);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(106, 17, 203, 0.1);
}

[data-theme="dark"] .feature-card {
  border: 1px solid rgba(106, 17, 203, 0.3);
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px -20px rgba(106, 17, 203, 0.5);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Download Page - 3D设备 */
.download-hero {
  text-align: center;
  margin: 3rem 0;
}

.devices {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin: 3rem 0;
  flex-wrap: wrap;
}

.device {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 2rem;
  width: 200px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.device:hover {
  transform: scale(1.05);
}

.device-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

/* News List - 杂志网格 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
  margin: 2rem 0;
}

.news-card {
  background: var(--card-bg);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
}

.news-img {
  height: 200px;
  background: linear-gradient(45deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.news-content {
  padding: 1.5rem;
}

.news-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.8rem;
  font-size: 0.85rem;
  color: var(--gray);
}

.tag {
  background: rgba(106, 17, 203, 0.1);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-weight: 600;
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 0 2rem;
  color: var(--gray);
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .devices {
    gap: 1.5rem;
  }
  
  .device {
    width: 150px;
    padding: 1.5rem;
  }
}