/* 科技感主题 - 深色渐变背景 + 发光效果 + 玻璃拟态 */

:root {
    /* 科技感主色调 - 深蓝紫色系 */
    --primary-color: #1a56db;
    --primary-hover: #3b82f6;
    --secondary-color: #7c3aed;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --cta-color: #8b5cf6;
    --cta-hover: #a78bfa;
    --white: #e0e0e0;
    
    /* 科技感中性色 */
    --bg-light: #0a0e27;
    --bg-dark: #050a1a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0aec0;
    --border-color: rgba(26, 86, 219, 0.3);
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow: rgba(26, 86, 219, 0.2);
    --shadow-hover: rgba(26, 86, 219, 0.4);
    --glow: 0 0 20px rgba(26, 86, 219, 0.5);
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-xxl: 4rem;
    --spacing-xxxl: 6rem;
    
    /* 圆角 */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    
    /* 过渡 */
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    
    /* 字体 */
    --font-family-primary: 'Inter', sans-serif;
    --font-family-secondary: 'Inter', sans-serif;
    
    /* 排版 */
    --font-size-hero: clamp(2.5rem, 8vw, 6rem);
    --font-weight-bold: 700;
    --font-weight-black: 800;
    --letter-spacing-tight: -0.025em;
}

/* 全局样式 - 科技感深色背景 */
body {
    font-family: var(--font-family-secondary);
    background: linear-gradient(135deg, #0a0e27 0%, #16213e 50%, #0f3460 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 科技感背景光效 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(26, 86, 219, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(26, 86, 219, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: tech-pulse 8s ease-in-out infinite;
}

@keyframes tech-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* 导航栏 - 玻璃拟态 */
.navbar {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--box-shadow);
}

.navbar .logo-text {
    color: var(--white);
    text-shadow: 0 0 10px rgba(26, 86, 219, 0.5);
}

.navbar .nav-link {
    color: var(--text-secondary);
    transition: var(--transition);
}

.navbar .nav-link:hover {
    color: var(--white);
    text-shadow: 0 0 10px rgba(26, 86, 219, 0.5);
}

/* 按钮 - 发光效果 */
.btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: var(--white);
    border: 1px solid rgba(26, 86, 219, 0.5);
    box-shadow: 0 4px 15px rgba(26, 86, 219, 0.3);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(26, 86, 219, 0.4),
        0 0 30px rgba(26, 86, 219, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--white);
    box-shadow: 0 0 20px rgba(26, 86, 219, 0.3);
}

/* 卡片 - 玻璃拟态 + 发光边框 */
.modern-card,
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(26, 86, 219, 0.3),
        inset 0 0 20px rgba(26, 86, 219, 0.05);
    transition: var(--transition);
}

.modern-card:hover,
.card:hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(26, 86, 219, 0.5),
        inset 0 0 30px rgba(26, 86, 219, 0.1);
    border-color: rgba(26, 86, 219, 0.5);
}

/* 表单输入框 - 发光聚焦效果 */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
textarea,
select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    transition: var(--transition);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 
        0 0 0 3px rgba(26, 86, 219, 0.3),
        0 0 20px rgba(26, 86, 219, 0.2);
    animation: tech-glow 0.5s ease;
}

@keyframes tech-glow {
    0% {
        box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.3);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(26, 86, 219, 0.1);
    }
    100% {
        box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.3);
    }
}

/* 英雄区域 - 科技感渐变 */
.modern-hero {
    background: linear-gradient(135deg, rgba(26, 86, 219, 0.2) 0%, rgba(59, 130, 246, 0.1) 100%);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.modern-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(26, 86, 219, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    animation: tech-rotate 20s linear infinite;
}

@keyframes tech-rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.modern-hero-title {
    color: var(--white);
    text-shadow: 0 0 20px rgba(26, 86, 219, 0.5);
}

.modern-hero-subtitle {
    color: var(--text-secondary);
}

/* 页脚 */
.footer {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 下拉菜单 */
.dropdown-menu {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.dropdown-menu a {
    color: var(--text-secondary);
    transition: var(--transition);
}

.dropdown-menu a:hover {
    color: var(--white);
    background: rgba(26, 86, 219, 0.2);
    text-shadow: 0 0 10px rgba(26, 86, 219, 0.5);
}

/* 徽章 */
.badge {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

.notification-badge {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

/* 表格 */
table {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

th {
    background: rgba(26, 86, 219, 0.2);
    color: var(--white);
    text-shadow: 0 0 10px rgba(26, 86, 219, 0.5);
}

td {
    border-color: rgba(26, 86, 219, 0.2);
}

tr:hover td {
    background: rgba(26, 86, 219, 0.1);
}

/* 进度条 */
.progress-bar {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
}

.progress-fill {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    box-shadow: 0 0 10px rgba(26, 86, 219, 0.5);
}

/* 提示框 */
.alert {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.alert-success {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.1);
}

.alert-danger {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.1);
}

.alert-warning {
    border-color: rgba(245, 158, 11, 0.5);
    background: rgba(245, 158, 11, 0.1);
}

/* 模态框 */
.modal {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
}

/* 标签 */
.tag {
    background: rgba(26, 86, 219, 0.2);
    border: 1px solid rgba(26, 86, 219, 0.5);
    color: var(--white);
    box-shadow: 0 0 10px rgba(26, 86, 219, 0.3);
}

/* 链接 */
a {
    color: var(--primary-color);
    transition: var(--transition);
    text-decoration: none;
}

a:hover {
    color: var(--primary-hover);
    text-shadow: 0 0 10px rgba(26, 86, 219, 0.5);
}

/* 加载动画 */
.spinner {
    border: 3px solid rgba(26, 86, 219, 0.3);
    border-top-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(26, 86, 219, 0.5);
    animation: tech-spin 1s linear infinite;
}

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

/* 响应式调整 */
@media (max-width: 768px) {
    .modern-hero {
        padding: var(--spacing-lg);
    }
    
    .modern-card,
    .card {
        margin-bottom: var(--spacing-lg);
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(26, 86, 219, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-color), var(--primary-hover));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-hover), var(--cta-color));
}

/* 主题切换器 */
.theme-switcher {
    margin-right: var(--spacing-md);
}

.theme-switcher select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.theme-switcher select:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.3);
}

.theme-switcher select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 
        0 0 0 3px rgba(26, 86, 219, 0.3),
        0 0 20px rgba(26, 86, 219, 0.2);
}

.theme-switcher select option {
    background: rgba(10, 14, 39, 0.95);
    color: var(--text-primary);
    padding: 10px;
}