/* 项目展示页面样式 */

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="80" cy="40" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="40" cy="80" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: 0;
    opacity: 0.9;
}

/* 项目筛选 */
.project-filters {
    background: #f8f9fa;
    padding: 2rem 0;
    border-bottom: 1px solid #e9ecef;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-tab {
    padding: 0.75rem 1.5rem;
    background: #ffffff;
    color: #666666;
    text-decoration: none;
    border-radius: 25px;
    border: 2px solid #e9ecef;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.filter-tab::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
}

.filter-tab:hover::before {
    width: 100%;
    height: 100%;
}

.filter-tab:hover {
    color: #333333;
    border-color: #333333;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.filter-tab.active {
    background: #333333;
    color: #ffffff;
    border-color: #333333;
}

/* 项目网格区域 */
.projects-grid-section {
    padding: 4rem 0;
    background: #ffffff;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

/* 项目卡片 */
.project-card {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* 项目图片 */
.project-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #666666;
}

.placeholder-icon {
    width: 60px;
    height: 60px;
    background: #dee2e6;
    border-radius: 50%;
    margin-bottom: 1rem;
    position: relative;
}

.placeholder-icon::before {
    content: '📁';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
}

.placeholder-text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* 项目覆盖层 */
.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.overlay-content {
    display: flex;
    gap: 1rem;
    flex-direction: column;
    align-items: center;
}

.project-link,
.project-demo {
    padding: 0.75rem 1.5rem;
    background: #ffffff;
    color: #333333;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    min-width: 120px;
    text-align: center;
}

.project-link:hover {
    background: #333333;
    color: #ffffff;
    transform: translateY(-2px);
}

.project-demo {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.project-demo:hover {
    background: #ffffff;
    color: #333333;
}

/* 项目徽章 */
.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #ff6b6b;
    color: #ffffff;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

.project-status {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    z-index: 2;
}

.status-completed {
    background: #51cf66;
    color: #ffffff;
}

.status-in_progress {
    background: #ffd43b;
    color: #333333;
}

.status-planning {
    background: #74c0fc;
    color: #ffffff;
}

/* 项目内容 */
.project-content {
    padding: 1.5rem;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.project-type {
    background: #e9ecef;
    color: #495057;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 500;
}

.project-date {
    color: #6c757d;
    font-weight: 500;
}

.project-title {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.3;
}

.project-title a {
    color: #333333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.project-title a:hover {
    color: #007bff;
}

.project-client {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.project-description {
    color: #666666;
    line-height: 1.6;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

/* 技术标签 */
.project-tech {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-label {
    font-size: 0.85rem;
    color: #6c757d;
    font-weight: 500;
    margin-right: 0.25rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: #f8f9fa;
    color: #495057;
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e9ecef;
}

.tech-more {
    background: #6c757d;
    color: #ffffff;
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 分页 */
.pagination-container {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #ffffff;
    padding: 1rem 2rem;
    border-radius: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.page-link {
    padding: 0.5rem 1rem;
    background: #f8f9fa;
    color: #495057;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: #333333;
    color: #ffffff;
    transform: translateY(-2px);
}

.page-info {
    color: #6c757d;
    font-weight: 500;
    margin: 0 1rem;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: #6c757d;
}

.empty-icon {
    width: 80px;
    height: 80px;
    background: #e9ecef;
    border-radius: 50%;
    margin: 0 auto 2rem;
    position: relative;
}

.empty-icon::before {
    content: '📂';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
}

.empty-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #495057;
}

.empty-description {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.empty-description a {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
}

.empty-description a:hover {
    text-decoration: underline;
}

/* 项目统计 */
.project-stats {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-4px);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #333333;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #6c757d;
    font-weight: 500;
    font-size: 1rem;
}

/* 联系我们CTA */
.contact-cta {
    background: linear-gradient(135deg, #333333 0%, #1a1a1a 100%);
    padding: 4rem 0;
    color: #ffffff;
}

.cta-content {
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: #007bff;
    color: #ffffff;
    border-color: #007bff;
}

.btn-primary:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border-color: #ffffff;
}

.btn-secondary:hover {
    background: #ffffff;
    color: #333333;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #333333;
    border-color: #333333;
}

.btn-outline:hover {
    background: #333333;
    color: #ffffff;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: 2.5rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-image {
        height: 180px;
    }
    
    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    
    .filter-tab {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .pagination {
        flex-wrap: wrap;
        padding: 1rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        min-width: 200px;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 80px 0 60px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .projects-grid-section {
        padding: 2rem 0;
    }
    
    .project-content {
        padding: 1rem;
    }
    
    .overlay-content {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .project-link,
    .project-demo {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
        min-width: 100px;
    }
}

/* 动画效果 */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.slide-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: slideInUp 0.5s ease forwards;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInLeft 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 延迟动画 */
[data-delay="100"] { animation-delay: 0.1s; }
[data-delay="200"] { animation-delay: 0.2s; }
[data-delay="300"] { animation-delay: 0.3s; }
[data-delay="400"] { animation-delay: 0.4s; }
[data-delay="500"] { animation-delay: 0.5s; }
[data-delay="600"] { animation-delay: 0.6s; }