/**
 * Modern Glass System - 舞动科技
 * 基于毛玻璃效果的现代化设计系统
 *
 * 设计理念：
 * - 深紫渐变背景 + 毛玻璃卡片
 * - 流畅动画和微交互
 * - 现代字体和视觉层次
 * - 统一的组件语言
 */

/* ========== Google Fonts 导入 ========== */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ========== CSS 变量系统 ========== */
:root {
    /* ===== 字体系统 ===== */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* ===== 主色调 - 深紫渐变 ===== */
    --color-primary: #7C3AED;
    --color-primary-light: #A78BFA;
    --color-primary-dark: #6D28D9;
    --color-secondary: #06B6D4;
    --color-accent: #F472B6;

    /* ===== 渐变色 ===== */
    --gradient-primary: linear-gradient(135deg, #7C3AED 0%, #A78BFA 100%);
    --gradient-secondary: linear-gradient(135deg, #06B6D4 0%, #22D3EE 100%);
    --gradient-accent: linear-gradient(135deg, #F472B6 0%, #FB7185 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-glow: linear-gradient(135deg, rgba(124, 58, 237, 0.4) 0%, rgba(6, 182, 212, 0.3) 100%);

    /* ===== 背景系统 - 深色渐变 ===== */
    --bg-deep: #0f0c29;
    --bg-mid: #302b63;
    --bg-light: #24243e;
    --gradient-bg: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    --gradient-bg-animated: linear-gradient(135deg, #0f0c29 0%, #1a1635 25%, #302b63 50%, #24243e 75%, #0f0c29 100%);

    /* ===== 毛玻璃效果 ===== */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-hover: rgba(255, 255, 255, 0.1);
    --glass-bg-active: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-hover: rgba(124, 58, 237, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-blur: blur(20px);

    /* ===== 文字颜色 ===== */
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;

    /* ===== 状态色 ===== */
    --color-success: #10b981;
    --color-success-light: #6ee7b7;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* ===== 圆角 ===== */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* ===== 间距 ===== */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* ===== 过渡 ===== */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* ===== 阴影 ===== */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 4px 20px rgba(124, 58, 237, 0.3);
    --shadow-glow-strong: 0 8px 40px rgba(124, 58, 237, 0.5);
}

/* ========== 全局重置和基础样式 ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--gradient-bg);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 背景渐变动画 */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 背景光晕装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(244, 114, 182, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: backgroundPulse 15s ease infinite;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ========== 毛玻璃卡片组件 ========== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

/* ========== 按钮组件 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 24px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

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

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

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-2px);
}

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

.btn-ghost:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
}

/* ========== 输入框组件 ========== */
.input {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 14px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

.input:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
    background: var(--glass-bg-hover);
}

.input::placeholder {
    color: var(--text-muted);
}

/* ========== 徽章组件 ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--color-success-light);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

/* ========== 动画效果 ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ========== 实用类 ========== */
.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.5s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.4s ease-out forwards;
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    :root {
        --radius-lg: 12px;
        --radius-xl: 16px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .input {
        padding: 10px 14px;
    }
}

/* ========== 可访问性 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    body {
        animation: none;
    }

    body::before {
        animation: none;
    }
}

/* 焦点可见性 */
:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

/* ========== 导航栏组件 ========== */
.navbar {
    background: rgba(15, 12, 41, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.navbar-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 18px;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.navbar-logo:hover {
    opacity: 0.9;
}

.navbar-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.navbar-link:hover {
    color: var(--text-primary);
    background: var(--glass-bg-hover);
}

.navbar-link.active {
    color: var(--text-primary);
    background: var(--glass-bg-active);
}

/* ========== 侧边栏组件 ========== */
.sidebar {
    background: rgba(15, 12, 41, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    margin-bottom: 4px;
}

.sidebar-nav-item:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.sidebar-nav-item.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

/* ========== 表格组件 ========== */
.glass-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.glass-table thead {
    background: rgba(124, 58, 237, 0.1);
}

.glass-table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--glass-border);
}

.glass-table td {
    padding: 16px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text-primary);
}

.glass-table tbody tr:hover {
    background: var(--glass-bg-hover);
}

.glass-table tbody tr:last-child td {
    border-bottom: none;
}

/* ========== 加载动画 ========== */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--glass-bg-hover);
    border-top-color: var(--color-primary-light);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========== 提示消息 ========== */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    backdrop-filter: var(--glass-blur);
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: slideInRight 0.4s ease-out;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--color-success-light);
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

.alert-info {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

/* ========== 分隔线 ========== */
.divider {
    height: 1px;
    background: linear-gradient(
        to right,
        transparent,
        var(--glass-border),
        transparent
    );
    margin: var(--space-lg) 0;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--glass-bg-hover);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--glass-bg-active);
}

/* ========== 选择状态 ========== */
::selection {
    background: rgba(124, 58, 237, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(124, 58, 237, 0.3);
    color: var(--text-primary);
}