/* 全局样式 - 参考Dia浏览器设计风格 */
:root {
    --primary-color: #000000;
    --secondary-color: #666666;
    --accent-color: #6366f1;
    --background-color: #ffffff;
    --card-background: #ffffff;
    --border-color: #f1f5f9;
    --hover-color: #f8fafc;
    --text-primary: #000000;
    --text-secondary: #64748b;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-heavy: 0 10px 25px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --border-radius-large: 16px;
    --gradient-primary: linear-gradient(135deg, #f59e0b 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-soft: linear-gradient(135deg, #fef3c7 0%, #e0e7ff 100%);
    
    /* 性能优化变量 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

* {
    box-sizing: border-box;
}

/* 性能优化：硬件加速 */
.card, .btn, .nav-link, .navbar {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* 性能优化：减少重绘 */
.section {
    will-change: opacity, transform;
}

/* 性能优化：平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 性能优化：减少动画重绘 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    background: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* 导航栏样式 - 简洁现代风格 */
.navbar {
    background-color: #ffffff !important; /* 改为白色背景 */
    border-bottom: 1px solid #e5e7eb;
    padding: 0.75rem 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    position: relative;
    width: 100%;
    min-width: 100%;
}

/* 为整个导航栏添加统一的浅色背景 */
.navbar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    width: 100vw;
    height: 100%;
    background: #ffffff; /* 改为白色背景 */
    pointer-events: none;
    z-index: -1;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    z-index: 1;
}

.navbar-brand i {
    color: var(--accent-color);
    font-size: 1.4rem;
}

.navbar-nav {
    align-items: center;
    position: relative;
    z-index: 1;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: 0.85rem;
    padding: 0.5rem 0.75rem !important;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    white-space: nowrap;
    position: relative;
    background-color: transparent !important; /* 改为透明背景 */
}

.nav-link:hover {
    color: var(--text-primary) !important;
    background-color: #f8f9fa !important;
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--text-primary) !important;
    background-color: #e9ecef !important;
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 1.25rem;
    right: 1.25rem;
    height: 3px;
    background: #000000;
    border-radius: 2px;
}

/* 为所有导航链接添加下划线 */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 1.25rem;
    right: 1.25rem;
    height: 2px;
    background: transparent;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-link:hover::after {
    background: rgba(0, 0, 0, 0.3);
}

/* 语言切换下拉菜单 */
.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem !important;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.dropdown-toggle:hover {
    color: var(--text-primary) !important;
    background-color: #f8f9fa !important;
    transform: translateY(-1px);
}

.dropdown-menu {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    padding: 0.75rem 0;
    margin-top: 0.5rem;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.dropdown-item {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--hover-color);
    color: var(--text-primary);
}

/* 主容器样式 */
.container-fluid {
    padding: 1rem 0.75rem;
    max-width: none;
    width: 100%;
    margin: 0;
    min-height: calc(100vh - 80px);
}

/* 卡片样式 - 简洁现代风格 */
.card {
    background-color: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(99, 102, 241, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
    border-color: #d1d5db;
}

.card-body {
    padding: 1rem;
}

.card-header {
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000000;
    margin-bottom: 1rem;
    text-align: center;
    letter-spacing: -0.5px;
}

/* 表单样式 */
.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

.form-control, .form-select {
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background-color: #ffffff;
}

.form-control:focus, .form-select:focus {
    border-color: #000000;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
    outline: none;
    background-color: #ffffff;
}

.form-control::placeholder {
    color: var(--text-secondary);
}

/* 按钮样式 - 简洁现代风格 */
.btn {
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.75rem 1.5rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    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;
}

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

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: #000000;
    color: white;
}

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

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

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-info {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 表格样式 */
.table {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e5e7eb;
    background-color: #ffffff;
    font-size: 0.875rem;
}

.table thead th {
    background-color: var(--hover-color);
    border-bottom: 1px solid var(--border-color);
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.8rem;
    padding: 0.75rem;
}

.table tbody td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

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

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

/* 徽章样式 */
.badge {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.bg-success {
    background: var(--gradient-secondary) !important;
}

.bg-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
}

/* 进度条样式 */
.progress {
    background-color: var(--hover-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 12px;
}

.progress-bar {
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

/* 文本样式 */
.text-muted {
    color: var(--text-secondary) !important;
}

.text-primary {
    color: var(--accent-color) !important;
}

.text-success {
    color: #06b6d4 !important;
}

.text-warning {
    color: #f59e0b !important;
}

.text-danger {
    color: #ef4444 !important;
}

/* 部分切换动画 */
.section {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.section.active {
    display: block;
}

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

/* 统计卡片 - 简洁现代风格 */
.stat-card {
    background: #ffffff;
    color: var(--text-primary);
    border: 1px solid #e5e7eb;
    position: relative;
    overflow: hidden;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #d1d5db;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.stat-card::after {
    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 0.6s ease;
}

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

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    color: #000000;
    line-height: 1;
}

.stat-card h5 {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 图表容器 */
#dpv-chart, #standard-curve-chart {
    border-radius: var(--border-radius);
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .navbar-nav .nav-link {
        font-size: 0.85rem;
        padding: 0.6rem 1rem !important;
    }
}

@media (max-width: 992px) {
    .container-fluid {
        padding: 2rem 1.5rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.75rem;
    }
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .container-fluid {
        padding: 1.5rem 1rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--hover-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* 文件上传区域 */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-large);
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.file-upload-area:hover {
    border-color: var(--accent-color);
    background-color: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
}

.file-upload-area.dragover {
    border-color: var(--accent-color);
    background-color: rgba(99, 102, 241, 0.1);
}

/* 结果卡片 */
.result-card {
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-primary);
    border-radius: var(--border-radius-large);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.result-card h4 {
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.result-value {
    font-size: 2rem;
    font-weight: 800;
    margin: 0.75rem 0;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 状态指示器 */
.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 0.75rem;
}

.status-success {
    background: var(--gradient-secondary);
}

.status-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.status-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

/* 额外的导航栏优化 */
.navbar .container {
    max-width: none;
    width: 100%;
    padding: 0 1rem;
}

.navbar-nav {
    gap: 0.5rem;
}

.nav-link {
    min-width: fit-content;
}

/* 仪表板统计卡片优化 */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* 内容区域优化 */
.content-section {
    margin-bottom: 1rem;
}

.content-section:last-child {
    margin-bottom: 0;
}

/* 表格响应式优化 */
.table-responsive {
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.9);
}

/* 文件上传区域增强 */
.file-upload-area {
    position: relative;
    cursor: pointer;
}

/* 只有特定的拖拽上传区域才隐藏文件输入控件 */
.file-upload-area.drag-drop input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

/* 确保普通的文件输入控件是可见的 */
input[type="file"] {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    position: relative !important;
    width: auto !important;
    height: auto !important;
}

/* 文件输入控件文本自定义 */
input[type="file"]::file-selector-button {
    content: attr(data-choose-text) !important;
}

/* 英文模式下的文件输入控件文本 */
html[lang="en"] input[type="file"]::file-selector-button {
    content: "Choose File" !important;
}

/* 英文模式下的文件输入控件样式 */
html[lang="en"] input[type="file"] {
    color: transparent !important;
    position: relative !important;
    font-size: 0 !important;
    padding-left: 120px !important; /* 为按钮留出空间 */
    text-indent: -9999px !important;
    overflow: hidden !important;
    background: transparent !important;
}

/* 英文模式下的文件选择按钮 */
html[lang="en"] input[type="file"]::-webkit-file-upload-button {
    content: "Choose File" !important;
    color: white !important;
    background: #000000 !important;
    border: none !important;
    padding: 0.5rem 1rem !important;
    border-radius: 4px !important;
    cursor: pointer !important;
    margin-right: 8px !important;
    font-size: 0.875rem !important;
    position: absolute !important;
    left: 0 !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    text-indent: 0 !important;
    overflow: visible !important;
    width: auto !important;
    min-width: 100px !important;
    font-family: inherit !important;
    font-weight: 500 !important;
}

/* 英文模式下的文件选择按钮（Firefox） */
html[lang="en"] input[type="file"]::file-selector-button {
    content: "Choose File" !important;
    color: white !important;
    background: #000000 !important;
    border: none !important;
    padding: 0.5rem 1rem !important;
    border-radius: 4px !important;
    cursor: pointer !important;
    margin-right: 8px !important;
    font-size: 0.875rem !important;
    position: absolute !important;
    left: 0 !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    width: auto !important;
    min-width: 100px !important;
}

/* 英文模式下显示"No file chosen"文本 */
html[lang="en"] input[type="file"]::after {
    content: "No file chosen" !important;
    color: #6c757d !important;
    font-size: 0.875rem !important;
    position: absolute !important;
    left: 50% !important;
    top: 50% !important;
    transform: translate(-50%, -50%) !important;
    white-space: nowrap !important;
}

/* 自定义文件标签样式 */
.custom-file-label {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    pointer-events: none !important;
    display: flex !important;
    align-items: center !important;
    padding: 0.75rem !important;
    color: #6c757d !important;
    font-size: 0.875rem !important;
    z-index: 1 !important;
}

/* 确保文件输入控件容器有相对定位 */
.form-control[type="file"] {
    position: relative !important;
}

/* 按钮组优化 */
.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 卡片网格布局 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

/* 加载状态优化 */
.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* 空状态优化 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.3;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 工具提示优化 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 250px;
    background-color: var(--text-primary);
    color: white;
    text-align: center;
    border-radius: var(--border-radius);
    padding: 0.75rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -125px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.8rem;
    box-shadow: var(--shadow-medium);
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 英文模式优化 */
html[lang="en"] .container-fluid {
    padding: 1rem 0.75rem;
}

html[lang="en"] .card-body {
    padding: 1.25rem;
}

html[lang="en"] h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

html[lang="en"] .dashboard-stats {
    gap: 1rem;
    margin-bottom: 1.5rem;
}

html[lang="en"] .content-section {
    margin-bottom: 1.5rem;
}

/* 仪表板优化样式 */
.stat-card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s;
    border-radius: 10px;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.stat-card .card-body {
    padding: 1.5rem;
}

.stat-card h3 {
    color: #007bff;
    font-weight: bold;
    margin: 0;
}

.stat-card h5 {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

/* 快速操作按钮 */
.btn-outline-primary:hover,
.btn-outline-success:hover,
.btn-outline-info:hover,
.btn-outline-warning:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 系统状态卡片 */
.badge {
    font-size: 0.75rem;
}

/* 浓度分析结果和DPV曲线布局优化 */
#concentration-results-section {
    display: flex;
    flex-direction: row;
    gap: 1rem;
}

#concentration-results-section .card {
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 12px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    flex: 1;
    min-height: 580px;
}

#concentration-results-section .card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

#concentration-results-section .card-title {
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.1rem;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

/* 表格样式优化 */
#concentration-results-section .table {
    margin-bottom: 0;
    font-size: 1rem;
    width: 100%;
}

#concentration-results-section .table th {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    color: #495057;
    font-size: 0.95rem;
    padding: 0.75rem 0.5rem;
    white-space: nowrap;
}

#concentration-results-section .table td {
    padding: 0.6rem 0.5rem;
    vertical-align: middle;
    border-bottom: 1px solid #f1f3f4;
    font-size: 0.9rem;
}

#concentration-results-section .table tbody tr:hover {
    background-color: #f8f9fa;
    transition: background-color 0.2s ease;
}

/* 确保表格容器能够显示所有行 */
#concentration-results-section .table-responsive {
    max-height: none;
    overflow: visible;
}

/* DPV曲线图表容器优化 */
#dpv-curves-chart {
    border-radius: 8px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 1px solid #e9ecef;
    width: 100%;
    height: 100%;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #ffffff;
        --secondary-color: #a0a0a0;
        --accent-color: #6366f1;
        --background-color: #0f0f23;
        --card-background: #1a1a2e;
        --border-color: #2d2d44;
        --hover-color: #16213e;
        --text-primary: #ffffff;
        --text-secondary: #a0a0a0;
    }
    
    body {
        background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    }
    
    .card, .table, .table-responsive {
        background-color: rgba(26, 26, 46, 0.9);
    }
    
    .navbar {
        background-color: rgba(26, 26, 46, 0.95) !important;
    }
    
    .dropdown-menu {
        background-color: rgba(26, 26, 46, 0.95);
    }
}