/* 酷盼数据分析系统 - 主样式文件 */

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

/* 基础样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo:hover {
    color: #1d4ed8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #2563eb;
    background: rgba(37, 99, 235, 0.1);
}

/* 主要内容区域 */
.main {
    padding: 2rem 0;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin: 1rem 0;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 35px rgba(0, 0, 0, 0.15);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
    text-align: center;
}

/* 数据概览卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: scale(1.05);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    color: white;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(100, 116, 139, 0.4);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 搜索框样式 */
.search-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
}

.search-input:focus {
    border-color: #3b82f6;
    outline: none;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.data-table th {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: #1e293b;
    border-bottom: 2px solid #e2e8f0;
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
    transition: background-color 0.2s ease;
}

.data-table tr:hover {
    background-color: #f8fafc;
}

.product-code {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: transform 0.2s ease;
}

.product-code:hover {
    transform: scale(1.05);
    color: white;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.page-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #e5e7eb;
    background: white;
    color: #374151;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.page-btn:hover {
    border-color: #3b82f6;
    background: #3b82f6;
    color: white;
}

.page-btn.current {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.page-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    text-align: center;
    margin-top: 1rem;
    color: #64748b;
}

/* 文件上传区域 */
.upload-area {
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    background: #f8fafc;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.05);
}

.upload-area.dragover {
    border-color: #1d4ed8;
    background: rgba(29, 78, 216, 0.1);
}

.upload-icon {
    font-size: 3rem;
    color: #94a3b8;
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1.1rem;
    color: #475569;
    margin-bottom: 0.5rem;
}

.upload-hint {
    color: #64748b;
    font-size: 0.9rem;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 消息提示 */
.message {
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.message.error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.message.info {
    background: #dbeafe;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
    }
    
    .nav-menu a {
        text-align: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .search-input {
        min-width: auto;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
    }
    
    .pagination {
        justify-content: center;
    }
    
    .page-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .card {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .btn {
        width: 100%;
        margin: 0.25rem 0;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

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

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #1f2937;
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.875rem;
}

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



/* Small button style */
.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    margin: 0.2rem;
}

/* Danger button style (for delete) */
.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

/* Favorite toggle area */
.stat-card.favorite-toggle {
    cursor: pointer;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%); /* Orange gradient */
}

.stat-card.favorite-toggle:hover {
    transform: scale(1.05);
}

/* Favorite items display box */
.favorite-items-display {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    margin: 1rem 0;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);
}

.favorite-items-display .card-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.favorite-list {
    list-style: none;
    padding: 0;
    max-height: 300px; /* Limit height for scrollability */
    overflow-y: auto;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.favorite-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #f1f5f9;
}

.favorite-list li:last-child {
    border-bottom: none;
}

.favorite-list li a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.favorite-list li a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.favorite-list li .btn-sm {
    margin-left: 1rem;
}