/* 自定义样式文件 */

/* 全局样式优化 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

html {
    scroll-behavior: smooth;
}

/* 导航栏优化 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    transform: translateY(-2px);
}

.navbar-nav .nav-link.active {
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

/* 搜索栏样式 */
.search-bar {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.search-input {
    border: 2px solid transparent;
    transition: all 0.3s ease;
    font-size: 16px;
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: white;
}

/* 轮播图样式 */
.hero-carousel {
    position: relative;
    overflow: hidden;
    margin-top: 76px;
}

.hero-slide {
    height: 60vh;
    min-height: 400px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.7), rgba(0,0,0,0.3));
}

.hero-slide .container {
    position: relative;
    z-index: 2;
}

.hero-slide h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.hero-slide p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* 按钮样式增强 */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 25px;
    padding: 12px 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.btn-outline-light {
    border-width: 2px;
    border-radius: 25px;
    padding: 10px 28px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.3);
}

/* 卡片样式优化 */
.card {
    border: none;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    overflow: hidden;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.95);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.card-img-top {
    transition: transform 0.3s ease;
}

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

/* 视频卡片特殊样式 */
.video-card {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.video-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover img {
    transform: scale(1.1);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.7), transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.play-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    font-size: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.play-btn:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
}

/* 评分星星样式 */
.rating-stars {
    display: flex;
    align-items: center;
    gap: 2px;
}

.star-rating {
    color: #ffd700;
    font-size: 18px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.star-empty {
    color: #ddd;
}

/* 标签样式 */
.badge {
    border-radius: 20px;
    font-weight: 600;
    padding: 6px 12px;
}

/* 部分标题样式 */
.section-title {
    color: #333;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* 轮播图导航按钮 */
.swiper-button-next,
.swiper-button-prev {
    color: white !important;
    background: rgba(0,0,0,0.5);
    border-radius: 50%;
    width: 50px !important;
    height: 50px !important;
    backdrop-filter: blur(10px);
}

.swiper-button-next::after,
.swiper-button-prev::after {
    font-size: 18px !important;
}

.swiper-pagination-bullet {
    background: white !important;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
    opacity: 1;
    transform: scale(1.2);
}

/* 分页样式 */
.pagination {
    justify-content: center;
    margin: 30px 0;
}

.page-link {
    border-radius: 8px !important;
    margin: 0 2px;
    border: none;
    background: rgba(255,255,255,0.8);
    color: #333;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 40px 0 20px;
    margin-top: 50px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.footer h5 {
    color: white;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer a:hover {
    color: white;
    transform: translateX(5px);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.back-to-top:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

/* 加载动画 */
.spinner-border {
    border-color: var(--primary-color);
    border-right-color: transparent;
}

/* 工具提示样式 */
.tooltip-inner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-size: 14px;
}

/* 弹出菜单样式 */
.popover {
    border: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-slide {
        height: 50vh;
        min-height: 300px;
    }

    .hero-slide h1 {
        font-size: 2rem;
    }

    .hero-slide p {
        font-size: 1rem;
    }

    .navbar-brand {
        font-size: 1.2rem;
    }

    .btn {
        padding: 8px 16px;
        font-size: 14px;
    }

    .video-card img {
        height: 200px;
    }

    .card {
        margin-bottom: 15px;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .hero-slide h1 {
        font-size: 1.5rem;
    }

    .hero-slide p {
        font-size: 0.9rem;
    }

    .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* 延迟动画 */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* 选择框样式 */
select.form-select {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

select.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 输入框焦点样式 */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 表格样式 */
.table {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.table thead th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    font-weight: 600;
}

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

/* 模态框样式 */
.modal-content {
    border: none;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 20px 20px 0 0;
}

/* 标签页样式 */
.nav-tabs {
    border: none;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 5px;
}

.nav-tabs .nav-link {
    border: none;
    color: #666;
    font-weight: 500;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.nav-tabs .nav-link.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 进度条样式 */
.progress {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

.progress-bar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* 警告框样式 */
.alert {
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.alert-primary {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: #333;
}

/* 图片画廊样式 */
.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    cursor: pointer;
}

.gallery-item img {
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.7), transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

/* 加载更多按钮 */
.load-more {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 25px;
    padding: 12px 30px;
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.load-more:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* 夜间模式支持 */
.dark-mode {
    background: #1a1a1a;
    color: #e9ecef;
}

.dark-mode .card {
    background: #2d2d2d;
    color: #e9ecef;
}

.dark-mode .navbar {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%) !important;
}

.dark-mode .footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2c3e50 100%);
}

/* 打印样式 */
@media print {
    .navbar,
    .footer,
    .back-to-top,
    .btn {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}