/* ==========================================
   案例页面样式 - Cases Page Styles
   ========================================== */

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
    margin-top: 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 18px;
    opacity: 0.95;
}

/* 案例展示区 */
.cases-section {
    padding: var(--spacing-4xl) 0;
}

/* 筛选器 */
.case-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-white);
    color: var(--color-gray);
    border: 2px solid var(--color-light-gray);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.filter-btn i {
    margin-right: var(--spacing-xs);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    border-color: transparent;
}

/* 案例网格 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.case-card {
    background: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.case-image {
    position: relative;
    width: 100%;
    padding-top: 66.67%; /* 3:2 比例 */
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    overflow: hidden;
}

.case-image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: rgba(255, 255, 255, 0.3);
}

.case-category-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-primary);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.case-content {
    padding: var(--spacing-lg);
}

.case-title {
    font-size: 18px;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.case-description {
    color: var(--color-gray);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
}

.case-meta i {
    font-size: 12px;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    z-index: 10000;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10001;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: rotate(90deg);
}

.modal-body {
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--spacing-2xl);
}

.modal-header {
    margin-bottom: var(--spacing-xl);
}

.modal-title {
    font-size: 28px;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.modal-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
}

.modal-image {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 12px;
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: rgba(255, 255, 255, 0.3);
}

.modal-section {
    margin-bottom: var(--spacing-xl);
}

.modal-section h3 {
    font-size: 20px;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-light-gray);
}

.modal-section p {
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.modal-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.info-item {
    padding: var(--spacing-md);
    background: var(--color-light-gray);
    border-radius: 8px;
}

.info-label {
    font-size: 14px;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.info-value {
    font-size: 16px;
    color: var(--color-dark);
    font-weight: 600;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 6px;
    font-size: 14px;
}

.results-list {
    list-style: none;
}

.results-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-gray);
    line-height: 1.6;
}

.results-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 18px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .page-header h1 {
        font-size: 36px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page-header {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }
    
    .page-header h1 {
        font-size: 28px;
    }
    
    .page-header p {
        font-size: 16px;
    }
    
    .case-filter {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 14px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-body {
        padding: var(--spacing-lg);
    }
    
    .modal-title {
        font-size: 22px;
    }
    
    .modal-image {
        font-size: 60px;
    }
}