:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --purple: #8b5cf6;
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #475569;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* 导航栏 */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-brand i {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text);
    background: var(--bg-card);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s infinite;
}

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

/* 主内容区 */
.main-content {
    margin-top: 64px;
    padding: 2rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 1.875rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.update-time {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.blue { background: rgba(59, 130, 246, 0.2); color: var(--primary); }
.stat-icon.red { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.stat-icon.green { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.stat-icon.purple { background: rgba(139, 92, 246, 0.2); color: var(--purple); }

.stat-info h3 {
    font-size: 1.875rem;
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 内容网格 */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* 面板 */
.panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
}

.panel-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-header h2 {
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-body {
    padding: 1rem;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--primary);
    color: white;
}

.btn:hover {
    background: var(--primary-dark);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-icon {
    padding: 0.5rem;
    width: 36px;
    height: 36px;
    justify-content: center;
}

/* 热点列表 */
.hotspot-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.hotspot-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 0.75rem;
    transition: all 0.2s;
}

.hotspot-item:hover {
    transform: translateX(4px);
    border-left: 3px solid var(--primary);
}

.hotspot-rank {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
}

.hotspot-info {
    flex: 1;
    min-width: 0;
}

.hotspot-title {
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hotspot-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.platform-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.platform-badge.zhihu { background: rgba(0, 132, 255, 0.2); color: #0084ff; }
.platform-badge.weibo { background: rgba(230, 22, 45, 0.2); color: #e6162d; }
.platform-badge.github { background: rgba(139, 148, 158, 0.2); color: #8b949e; }
.platform-badge.juejin { background: rgba(30, 128, 255, 0.2); color: #1e80ff; }
.platform-badge.v2ex { background: rgba(160, 160, 160, 0.2); color: #a0a0a0; }

.heat-score {
    font-size: 0.8125rem;
    color: var(--warning);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* 文章列表 */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.article-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 0.75rem;
}

.article-status {
    font-size: 0.5rem;
}

.article-status.draft { color: var(--text-muted); }
.article-status.published { color: var(--success); }
.article-status.archived { color: var(--warning); }

.article-info {
    flex: 1;
    min-width: 0;
}

.article-title {
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.status-badge {
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.6875rem;
    text-transform: uppercase;
}

.status-badge.draft { background: var(--bg); color: var(--text-muted); }
.status-badge.published { background: rgba(16, 185, 129, 0.2); color: var(--success); }

/* 状态网格 */
.status-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.status-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 0.75rem;
}

.status-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.status-value {
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-value.success { color: var(--success); }

/* 页脚 */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 响应式 */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        display: none;
    }
}