/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    color: white;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    display: inline-block;
    background: #f3f4f6;
    color: #374151;
    padding: 10px 25px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid #d1d5db;
}

.btn-secondary:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
}

.btn-link {
    color: #3b82f6;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.logo span {
    color: #6b7280;
    font-size: 0.9rem;
}

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

.nav a {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav a:hover,
.nav a.active {
    color: #1e40af;
    background: #eff6ff;
}

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

.btn-login {
    color: #374151;
    text-decoration: none;
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: #f3f4f6;
}

.btn-register {
    background: #1e40af;
    color: white;
    text-decoration: none;
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-register:hover {
    background: #3730a3;
}

/* 轮播图区域 */
.hero {
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    color: white;
    padding: 4rem 0;
    position: relative;
}

.hero-slider {
    position: relative;
    height: 400px;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: 2rem;
}

.slide-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.slide-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 数据统计 */
.stats {
    background: white;
    padding: 3rem 0;
}

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

.stat-item {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: #f8fafc;
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-item i {
    font-size: 3rem;
    color: #1e40af;
    margin-bottom: 1rem;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #64748b;
    font-size: 1.1rem;
}

/* 功能模块 */
.modules {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 3rem;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.module-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.module-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
    border-color: #1e40af;
}

.card-icon {
    width: 80px;
    height: 80px;
    background: #eff6ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon i {
    font-size: 2rem;
    color: #1e40af;
}

.module-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.module-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* 项目展示 */
.latest-projects,
.latest-jobs {
    padding: 3rem 0;
}

.projects-grid,
.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card,
.job-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.project-card:hover,
.job-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.project-image {
    width: 100%;
    height: 200px;
    background: #f1f5f9;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-title,
.job-title {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.project-meta,
.job-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #64748b;
    font-size: 0.9rem;
}

.meta-item i {
    color: #1e40af;
}

.project-description,
.job-description {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.view-all {
    text-align: center;
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #f8fafc;
}

.footer-section p {
    color: #cbd5e1;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #60a5fa;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #94a3b8;
}

/* 页面头部样式 */
.page-header {
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    gap: 1rem;
}

.search-box input {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
}

/* 筛选区域 */
.filters {
    background: white;
    padding: 2rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 600;
    color: #374151;
}

.filter-group select {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    background: white;
    font-size: 1rem;
}

/* 列表头部 */
.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem 0;
}

.results-count {
    font-size: 1.1rem;
    color: #64748b;
}

.results-count span {
    font-weight: 600;
    color: #1e40af;
}

.view-toggle {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    background: white;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-btn.active {
    background: #1e40af;
    color: white;
    border-color: #1e40af;
}

/* 列表网格布局 */
.projects-grid,
.jobs-grid,
.opportunities-grid,
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* 卡片样式 */
.project-card,
.job-card,
.opportunity-card,
.activity-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    cursor: pointer;
}

.project-card:hover,
.job-card:hover,
.opportunity-card:hover,
.activity-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    border-color: #1e40af;
}

/* 项目卡片特定样式 */
.project-card {
    position: relative;
}

.top-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #f59e0b;
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 1;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.publisher-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.publisher-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e2e8f0;
}

.publisher-name {
    font-size: 0.9rem;
    color: #64748b;
    font-weight: 500;
}

.company-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f1f5f9;
    padding: 8px 12px;
    border-radius: 6px;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: #64748b;
}

.company-info i {
    color: #1e40af;
}

.project-image {
    width: 100%;
    height: 200px;
    background: #f1f5f9;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-title,
.job-title,
.opportunity-title,
.activity-title {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.project-meta,
.job-meta,
.opportunity-meta,
.activity-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #64748b;
    font-size: 0.9rem;
}

.meta-item i {
    color: #1e40af;
}

.project-description,
.job-description,
.opportunity-description,
.activity-description {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* 商机卡片特定样式 */
.opportunity-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e2e8f0;
}

.user-name {
    font-weight: 600;
    color: #374151;
    font-size: 0.95rem;
}

.opportunity-type {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.opportunity-type.buy {
    background: #dbeafe;
    color: #1e40af;
}

.opportunity-type.sell {
    background: #dcfce7;
    color: #166534;
}

.opportunity-type.investment {
    background: #dbeafe;
    color: #1e40af;
}

.opportunity-type.cooperation {
    background: #dcfce7;
    color: #166534;
}

.opportunity-type.agency {
    background: #fef3c7;
    color: #92400e;
}

.opportunity-type.procurement {
    background: #f3e8ff;
    color: #6b21a8;
}

.opportunity-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e2e8f0;
}

.opportunity-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.opportunity-status.ongoing {
    background: #dcfce7;
    color: #166534;
}

.opportunity-status.completed {
    background: #f1f5f9;
    color: #64748b;
}

.opportunity-status.upcoming {
    background: #fef3c7;
    color: #92400e;
}

.btn-contact {
    background: #1e40af;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-contact:hover {
    background: #3730a3;
}

/* 活动卡片特定样式 */
.activity-image {
    position: relative;
    width: 100%;
    height: 200px;
    background: #f1f5f9;
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.activity-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.activity-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: white;
}

.activity-status.open {
    background: #22c55e;
}

.activity-status.ongoing {
    background: #f59e0b;
}

.activity-status.closed {
    background: #6b7280;
}

.activity-fee .free {
    color: #22c55e;
    font-weight: 600;
}

.activity-fee .paid {
    color: #dc2626;
    font-weight: 600;
}

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

.pagination-buttons {
    display: flex;
    gap: 0.5rem;
}

.page-btn {
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-btn:hover {
    background: #f3f4f6;
}

.page-btn.active {
    background: #1e40af;
    color: white;
    border-color: #1e40af;
}

/* 无结果和错误信息 */
.no-results,
.error-message {
    text-align: center;
    padding: 3rem;
    color: #64748b;
}

.no-results i,
.error-message i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #9ca3af;
}

.error-message i {
    color: #ef4444;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav ul {
        gap: 1rem;
    }
    
    .slide-content h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .projects-grid,
    .jobs-grid,
    .opportunities-grid,
    .activities-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .filter-row {
        grid-template-columns: 1fr;
    }
    
    .list-header {
        flex-direction: column;
        gap: 1rem;
        align-items: start;
    }
    
    .opportunity-footer {
        flex-direction: column;
        gap: 1rem;
    }
}

/* 加载动画 */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 项目详情页样式 */
.breadcrumb {
    background: #f8fafc;
    padding: 1rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.breadcrumb ol li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb ol li:not(:last-child):after {
    content: '›';
    color: #64748b;
    margin-left: 0.5rem;
}

.breadcrumb a {
    color: #64748b;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #1e40af;
}

.project-detail {
    padding: 2rem 0;
}

.project-basic-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.project-gallery {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.main-image {
    width: 100%;
    height: 400px;
    background: #f1f5f9;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-thumbnails {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.image-thumbnails img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.image-thumbnails img:hover {
    border-color: #1e40af;
}

.project-info {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.project-header {
    position: relative;
    margin-bottom: 2rem;
}

.top-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: #f59e0b;
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-header h1 {
    font-size: 2rem;
    color: #1e293b;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.publisher-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.publisher-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e2e8f0;
}

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

.publisher-name {
    font-weight: 600;
    color: #374151;
    font-size: 1rem;
}

.publish-time {
    color: #64748b;
    font-size: 0.9rem;
}

.key-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.key-info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 8px;
}

.key-info-item i {
    font-size: 1.5rem;
    color: #1e40af;
}

.key-info-item .label {
    display: block;
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 0.25rem;
}

.key-info-item .value {
    font-weight: 600;
    color: #1e293b;
}

.action-buttons {
    display: flex;
    gap: 1rem;
}

.btn-contact {
    flex: 1;
    padding: 1rem;
    font-size: 1.1rem;
}

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

.btn-favorite.favorited {
    background: #ef4444;
    color: white;
}

.project-content {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    margin-bottom: 3rem;
}

.content-section {
    margin-bottom: 2.5rem;
}

.content-section h2 {
    font-size: 1.5rem;
    color: #1e293b;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #f1f5f9;
}

.content-box {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    line-height: 1.6;
    color: #374151;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.contact-item i {
    color: #1e40af;
    font-size: 1.2rem;
}

.contact-item span {
    color: #64748b;
}

.contact-item strong {
    color: #1e293b;
}

.related-projects {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.related-projects h2 {
    font-size: 1.8rem;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e2e8f0;
}

.modal-header h3 {
    margin: 0;
    color: #1e293b;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #64748b;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: #1e293b;
}

.modal-body {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #374151;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e40af;
}

.form-actions {
    margin-top: 2rem;
}

/* 错误信息样式 */
.error-message {
    text-align: center;
    padding: 3rem 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.error-message i {
    font-size: 4rem;
    color: #ef4444;
    margin-bottom: 1rem;
}

.error-message h3 {
    color: #1e293b;
    margin-bottom: 1rem;
}

.error-message p {
    color: #64748b;
    margin-bottom: 2rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .project-basic-info {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .main-image {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .project-basic-info {
        gap: 1.5rem;
    }
    
    .project-info {
        padding: 1.5rem;
    }
    
    .key-info-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .main-image {
        height: 250px;
    }
    
    .project-header h1 {
        font-size: 1.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-header,
    .modal-body {
        padding: 1rem;
    }
}