/* Demo页面专用样式 */

/* 优化导航栏样式 */
.demo-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--navbar-background);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 122, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-speed) ease;
}

.demo-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 20px;
}

/* Logo区域 */
.demo-nav-logo {
    flex-shrink: 0;
}

.demo-logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: all var(--transition-speed) ease;
}

.demo-logo-link:hover {
    transform: translateY(-1px);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.logo-icon i {
    color: white;
    font-size: 1.4rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-main {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1;
}

.logo-sub {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1;
}

/* 面包屑导航 */
.demo-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 20px;
    flex: 1;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.7;
    transition: all var(--transition-speed) ease;
}

.breadcrumb-item:hover {
    opacity: 1;
    color: var(--primary-color);
}

.breadcrumb-item.current {
    opacity: 1;
    color: var(--primary-color);
    font-weight: 600;
}

.breadcrumb-separator {
    color: var(--text-color);
    opacity: 0.4;
    font-size: 0.8rem;
}

/* 导航菜单 */
.demo-nav-menu {
    display: flex;
    align-items: center;
    gap: 5px;
}

.demo-nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: all var(--transition-speed) ease;
    position: relative;
}

.demo-nav-link:hover {
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.demo-nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.demo-nav-link i {
    font-size: 0.9rem;
}

/* 移动端菜单按钮 */
.demo-mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.demo-mobile-toggle span {
    width: 100%;
    height: 3px;
    background: var(--text-color);
    border-radius: 2px;
    transition: all var(--transition-speed) ease;
}

/* 控制按钮 */
.demo-nav-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.demo-control-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(0, 122, 255, 0.1);
    border: 1px solid rgba(0, 122, 255, 0.2);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.demo-control-btn:hover {
    background: rgba(0, 122, 255, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

.control-text {
    font-size: 0.85rem;
    font-weight: 600;
}

/* 页面基础布局 */
.main-content {
    min-height: calc(100vh - 70px);
    padding-top: 70px;
}

/* 页面标题区域 */
.page-header {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, 
        rgba(0, 122, 255, 0.1) 0%, 
        rgba(90, 200, 250, 0.1) 100%);
    border-radius: var(--border-radius);
    margin: 20px auto;
    max-width: 1200px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../../../images/bg/fogforest.jpg') center/cover;
    opacity: 0.1;
    z-index: -1;
}

.header-content {
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.page-title i {
    color: var(--primary-color);
    font-size: 2.5rem;
}

.beta-tag {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 10px;
}

/* 分割线 */
.section-divider {
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--primary-color) 50%, 
        transparent 100%);
    margin: 40px auto;
    max-width: 200px;
    border-radius: 1px;
}

/* Demo菜单区域 */
.demo-menu-section {
    padding: 40px 20px 80px;
}

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

.section-title {
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Demo卡片网格 */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

/* Demo卡片样式 */
.demo-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px var(--shadow-color);
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    position: relative;
    border: 1px solid rgba(0, 122, 255, 0.1);
}

.demo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px var(--shadow-color);
    border-color: var(--primary-color);
}

/* 排序卡片特殊样式 */
.sorting-card {
    background: linear-gradient(135deg, 
        var(--card-background) 0%, 
        rgba(0, 122, 255, 0.02) 100%);
}

.sorting-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

/* 占位卡片样式 */
.placeholder-card {
    background: linear-gradient(135deg, 
        var(--card-background) 0%, 
        rgba(128, 128, 128, 0.02) 100%);
    opacity: 0.7;
}

.placeholder-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ddd, #eee);
}

/* 卡片头部 */
.card-header {
    padding: 30px 30px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

.card-icon i {
    font-size: 1.8rem;
    color: white;
}

.placeholder-icon {
    background: linear-gradient(135deg, #999, #bbb);
    box-shadow: 0 4px 16px rgba(153, 153, 153, 0.3);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    flex: 1;
    margin: 0;
}

.beta-badge {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
}

/* 卡片内容 */
.card-content {
    padding: 0 30px 20px;
}

.card-description {
    font-size: 1rem;
    color: var(--text-color);
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* 算法标签列表 */
.algorithm-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.algorithm-tag {
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(0, 122, 255, 0.2);
    transition: all var(--transition-speed) ease;
}

.algorithm-tag:hover {
    background: rgba(0, 122, 255, 0.2);
    transform: translateY(-1px);
}

/* 卡片底部 */
.card-footer {
    padding: 20px 30px 30px;
}

.demo-btn {
    width: 100%;
    padding: 15px 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
}

.demo-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 122, 255, 0.3);
}

.demo-btn:disabled {
    background: linear-gradient(135deg, #ccc, #ddd);
    cursor: not-allowed;
    opacity: 0.7;
}

.placeholder-btn {
    background: linear-gradient(135deg, #999, #bbb);
}

/* 页脚样式 */
.footer {
    background: var(--card-background);
    border-top: 1px solid rgba(0, 122, 255, 0.1);
    margin-top: 60px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3,
.footer-section h4 {
    color: var(--text-color);
    margin-bottom: 15px;
}

.footer-section h3 {
    font-size: 1.3rem;
    font-weight: 600;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 500;
}

.footer-section p {
    color: var(--text-color);
    opacity: 0.8;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.8;
    transition: all var(--transition-speed) ease;
}

.footer-section ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-speed) ease;
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
}

.footer-bottom {
    border-top: 1px solid rgba(0, 122, 255, 0.1);
    padding: 20px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-color);
    opacity: 0.7;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .demo-nav-container {
        padding: 0 15px;
        gap: 15px;
    }
    
    .demo-breadcrumb {
        display: none;
    }
    
    .demo-nav-menu {
        gap: 2px;
    }
    
    .demo-nav-link {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    
    .demo-nav-link span {
        display: none;
    }
    
    .demo-nav-link i {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .demo-nav-container {
        height: 60px;
    }
    
    .demo-nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--navbar-background);
        backdrop-filter: blur(20px);
        border-top: 1px solid rgba(0, 122, 255, 0.1);
        flex-direction: column;
        padding: 20px;
        gap: 10px;
    }
    
    .demo-nav-menu.active {
        display: flex;
    }
    
    .demo-nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: 15px 20px;
        border-radius: 10px;
    }
    
    .demo-nav-link span {
        display: inline;
    }
    
    .demo-mobile-toggle {
        display: flex;
    }
    
    .logo-text {
        display: none;
    }
    
    .demo-breadcrumb {
        display: none;
    }
    
    .main-content {
        padding-top: 60px;
    }
    
    .page-title {
        font-size: 2.2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .demo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .card-header {
        padding: 20px 20px 15px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .card-content {
        padding: 0 20px 15px;
    }
    
    .card-footer {
        padding: 15px 20px 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.8rem;
    }
    
    .page-title i {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .demo-grid {
        margin-top: 30px;
    }
    
    .algorithm-list {
        justify-content: center;
    }
}

/* 暗色模式适配 */
.dark-mode .page-header {
    background: linear-gradient(135deg, 
        rgba(0, 122, 255, 0.15) 0%, 
        rgba(90, 200, 250, 0.15) 100%);
}

.dark-mode .demo-card {
    border-color: rgba(255, 255, 255, 0.1);
}

.dark-mode .demo-card:hover {
    border-color: var(--primary-color);
}

.dark-mode .algorithm-tag {
    background: rgba(0, 122, 255, 0.2);
    border-color: rgba(0, 122, 255, 0.3);
}

.dark-mode .algorithm-tag:hover {
    background: rgba(0, 122, 255, 0.3);
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.demo-card {
    animation: fadeInUp 0.6s ease-out;
}

.demo-card:nth-child(2) {
    animation-delay: 0.2s;
}

.demo-card:nth-child(3) {
    animation-delay: 0.4s;
}