/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 应用容器 */
.app-container {
    display: flex;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
}

/* 侧边栏 */
.sidebar {
    width: 280px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 1000;
}

.logo h2 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #60a5fa, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.logo p {
    color: #94a3b8;
    font-size: 0.9rem;
}

.nav-menu {
    margin: 2rem 0;
    flex: 1;
}

.nav-item {
    padding: 1rem 1.5rem;
    margin: 0.5rem 0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.nav-item span {
    font-weight: 500;
    font-size: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-top: auto;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #60a5fa, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.username {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.8rem;
    color: #94a3b8;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* 顶部导航 */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-left h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #e2e8f0, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.header-left p {
    color: #94a3b8;
    font-size: 1.1rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 0.75rem 1rem 0.75rem 3rem;
    color: #e2e8f0;
    font-size: 0.9rem;
    width: 300px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.search-box span {
    position: absolute;
    left: 1rem;
    color: #94a3b8;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.action-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: #e2e8f0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.action-btn.primary {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border: none;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.action-btn.primary:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

/* 数据概览卡片 */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    font-size: 3rem;
    margin-right: 1.5rem;
    opacity: 0.8;
}

.stat-info h3 {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #e2e8f0, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-change {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.stat-change.positive {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.stat-change.negative {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* 图表区域 */
.chart-section {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.chart-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #e2e8f0;
}

.chart-controls {
    display: flex;
    gap: 1rem;
}

.chart-controls select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    color: #e2e8f0;
    font-size: 0.9rem;
    cursor: pointer;
}

.chart-controls select:focus {
    outline: none;
    border-color: #3b82f6;
}

.chart-container {
    height: 400px;
    position: relative;
}

/* 多图表网格 */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.grid-item {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.grid-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.grid-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #e2e8f0;
}

/* 实时数据流 */
.realtime-section {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
}

.realtime-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #e2e8f0;
}

.realtime-container {
    max-height: 300px;
    overflow-y: auto;
}

.data-stream {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stream-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
    animation: slideIn 0.5s ease-out;
}

.stream-time {
    font-size: 0.8rem;
    color: #94a3b8;
    min-width: 80px;
    margin-right: 1rem;
}

.stream-content {
    flex: 1;
    font-size: 0.9rem;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    background: #1e293b;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: #94a3b8;
}

.close:hover {
    color: #e2e8f0;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .main-content {
        margin-left: 240px;
    }
    
    .chart-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .top-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-right {
        flex-direction: column;
        gap: 1rem;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .chart-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}