/**
 * WeBot 智能双微发布系统 - 设计系统
 * 科技感、智能化、简洁高效的用户体验
 */

/* ==================== 色彩体系 ==================== */
:root {
    /* 主色调 */
    --color-primary: #2563eb;
    --color-wechat: #07C160;
    --color-weibo: #FF8200;
    --color-dark: #1a1a1a;
    
    /* 辅助色 */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* 中性色 */
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #6b7280;
    --color-border: #e5e7eb;
    --color-bg: #f8fafc;
    --color-bg-dark: #0f172a;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #2563eb, #3b82f6);
    --gradient-wechat: linear-gradient(135deg, #07C160, #06ad56);
    --gradient-weibo: linear-gradient(135deg, #FF8200, #ff9500);
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
    
    /* 字号 */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==================== 基础重置 ==================== */
* {
    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-family);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    line-height: 1.6;
}

/* ==================== 科技网格背景 ==================== */
.tech-grid-bg {
    position: relative;
    background: var(--color-bg-dark);
    overflow: hidden;
}

.tech-grid-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(37, 99, 235, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    pointer-events: none;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* ==================== 玻璃拟态效果 ==================== */
.glass-morphism {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
}

/* ==================== 按钮样式 ==================== */
.btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-wechat {
    background: var(--gradient-wechat);
    color: white;
}

.btn-weibo {
    background: var(--gradient-weibo);
    color: white;
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-warning {
    background: var(--color-warning);
    color: white;
}

.btn-error {
    background: var(--color-error);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
}

.btn-lg {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: 6px var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* ==================== 输入框样式 ==================== */
.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: all var(--transition-base);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

/* ==================== 卡片样式 ==================== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    background: var(--color-bg);
}

.card-body {
    padding: var(--spacing-md);
}

.card-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

/* ==================== 徽章样式 ==================== */
.badge {
    display: inline-block;
    padding: 4px var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    line-height: 1.5;
}

.badge-primary {
    background: var(--color-primary);
    color: white;
}

.badge-success {
    background: var(--color-success);
    color: white;
}

.badge-warning {
    background: var(--color-warning);
    color: white;
}

.badge-error {
    background: var(--color-error);
    color: white;
}

.badge-wechat {
    background: var(--color-wechat);
    color: white;
}

.badge-weibo {
    background: var(--color-weibo);
    color: white;
}

/* ==================== 导航栏样式 ==================== */
.navbar {
    background: var(--color-dark);
    padding: var(--spacing-sm) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    color: white !important;
    font-weight: 700;
    font-size: var(--font-size-xl);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    color: white !important;
    background: rgba(255, 255, 255, 0.1);
}

/* ==================== 侧边栏样式 ==================== */
.sidebar {
    width: 260px;
    background: white;
    border-right: 1px solid var(--color-border);
    min-height: calc(100vh - 70px);
    transition: all var(--transition-base);
    position: fixed;
    left: 0;
    top: 70px;
    overflow-y: auto;
}

.sidebar.collapsed {
    width: 80px;
}

.sidebar-menu {
    list-style: none;
    padding: var(--spacing-md) 0;
}

.sidebar-menu-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-menu-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
}

.sidebar-menu-link:hover {
    background: var(--color-bg);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}

.sidebar-menu-link.active {
    background: rgba(37, 99, 235, 0.1);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar-menu-icon {
    font-size: var(--font-size-xl);
    width: 24px;
    text-align: center;
}

.sidebar-submenu {
    list-style: none;
    padding-left: var(--spacing-lg);
    margin-top: var(--spacing-xs);
    display: none;
}

.sidebar-menu-item.expanded .sidebar-submenu {
    display: block;
}

/* ==================== 主内容区 ==================== */
.main-content {
    margin-left: 260px;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    min-height: calc(100vh - 70px);
}

.sidebar.collapsed ~ .main-content {
    margin-left: 80px;
}

/* ==================== 统计卡片 ==================== */
.stat-card {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.3);
}

.stat-card-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.stat-card-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-card-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

/* ==================== 内容卡片网格 ==================== */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.content-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.content-card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: var(--color-bg);
}

.content-card-body {
    padding: var(--spacing-md);
}

.content-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.content-card-excerpt {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

/* ==================== 加载动画 ==================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

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

/* ==================== 工具类 ==================== */
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-secondary { color: var(--color-text-secondary); }

.bg-primary { background-color: var(--color-primary); }
.bg-success { background-color: var(--color-success); }
.bg-warning { background-color: var(--color-warning); }
.bg-error { background-color: var(--color-error); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.flex { display: flex; }
.flex-column { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 动画效果 ==================== */
.fade-in {
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn var(--transition-base);
}

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