/* 全局样式文件 - 黑色、深紫、深蓝主题 */

:root {
  /* 主题颜色 */
  --primary-dark: #0a0f1a;
  --primary-purple: #1a1a3a;
  --primary-blue: #1a2a4d;
  --accent-purple: #6a0dad;
  --accent-blue: #3aa3ff;
  --accent-dark-blue: #0f1a30;
  --text-light: #e0e0ff;
  --text-muted: #a0a0c0;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-hover: rgba(255, 255, 255, 0.15);
  --transition-speed: 0.3s;
}

/* 基础重置和全局样式 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  color: var(--text-light);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(106, 13, 173, 0.1) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(58, 163, 255, 0.1) 0%, transparent 20%);
  z-index: -1;
}

/* 毛玻璃效果容器 */
.glass-container {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* 统一导航栏样式 */
.navbar {
  background: rgba(10, 15, 26, 0.85) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 5%;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-speed) ease;
}

.navbar.scrolled {
  padding: 0.5rem 5%;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.8rem;
  background: linear-gradient(45deg, var(--accent-purple), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  gap: 1rem;
}

.nav-link {
  color: var(--text-light) !important;
  text-decoration: none;
  padding: 0.5rem 1rem !important;
  border-radius: 8px;
  transition: all var(--transition-speed) ease;
  position: relative;
  font-weight: 500;
}

.nav-link:hover {
  background: var(--glass-hover);
  transform: translateY(-2px);
}

.nav-link.active {
  color: var(--accent-blue) !important;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  width: 60%;
  height: 3px;
  background: var(--accent-blue);
  transform: translateX(-50%);
  border-radius: 3px;
}

/* 按钮样式 */
.btn-primary {
  background: linear-gradient(45deg, var(--accent-purple), var(--accent-blue));
  border: none;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all var(--transition-speed) ease;
  box-shadow: 0 4px 15px rgba(106, 13, 173, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(106, 13, 173, 0.5);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent-blue);
  color: var(--accent-blue);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all var(--transition-speed) ease;
}

.btn-outline:hover {
  background: rgba(58, 163, 255, 0.1);
  transform: translateY(-3px);
}

/* 卡片样式 */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 2rem;
  transition: all var(--transition-speed) ease;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
  background: linear-gradient(45deg, var(--text-light), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.2rem;
  color: var(--text-light);
}
h3 {
  font-size: 1.8rem;
  color: var(--text-light);
}
h4 {
  font-size: 1.5rem;
  color: var(--text-light);
}
h5 {
  font-size: 1.3rem;
  color: var(--text-light);
}
li {
  font-size: 1rem;
  color: var(--text-light);
}
/* 段落样式 */
p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* 容器样式 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* 动画类 */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.6s forwards;
}
footer {
            background: rgba(10, 15, 26, 0.7);
            backdrop-filter: blur(10px);
            padding: 2rem 0;
            text-align: center;
            border-top: 1px solid var(--glass-border);
            margin-top: 4rem;
        }
@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  animation: slideInLeft 0.6s forwards;
}

@keyframes slideInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  animation: slideInRight 0.6s forwards;
}

@keyframes slideInRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar-nav {
    gap: 0.5rem;
  }
  
  .nav-link {
    padding: 0.5rem !important;
    font-size: 0.9rem;
  }
  
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .container {
    padding: 0 1rem;
  }
}