/* 探索页面样式 - 基于主页面样式扩展 */

/* 导入主页面基础样式 */
@import url('style.css');

/* 搜索区域 */
.search-section {
    position: relative;
    padding: 80px 0;
    background: var(--dark-bg);
    overflow: hidden;
}

.search-section .wave-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0.08;
    border-radius: 40% 40% 0 0;
    animation: wave 15s ease-in-out infinite;
}

.search-section .wave-bg-2 {
    opacity: 0.12;
    animation: wave 12s ease-in-out infinite reverse;
    animation-delay: -2s;
}

.search-title {
    text-align: center;
    font-size: 42px;
    margin-bottom: 15px;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.search-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 40px;
}

.search-box {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 18px 25px;
    border: 2px solid rgba(0, 188, 212, 0.2);
    border-radius: 30px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 16px;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 188, 212, 0.2);
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.search-btn {
    width: 60px;
    height: 60px;
    border: none;
    border-radius: 30px;
    background: var(--gradient-1);
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

/* 筛选区域 */
.filter-section {
    padding: 40px 0;
    background: var(--darker-bg);
    position: sticky;
    top: 70px;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.filter-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.filter-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid rgba(136, 146, 176, 0.3);
    border-radius: 10px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
    cursor: pointer;
}

.filter-group select:focus {
    border-color: var(--primary-color);
}

.filter-group select option {
    background: var(--card-bg);
    color: var(--text-primary);
}

.reset-btn {
    padding: 12px 25px;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    white-space: nowrap;
}

.reset-btn:hover {
    background: var(--gradient-1);
    color: var(--text-primary);
}

/* 资料列表区域 */
.resources-section {
    padding: 60px 0;
    min-height: 500px;
}

.results-info {
    margin-bottom: 30px;
    color: var(--text-secondary);
    font-size: 16px;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

/* 资料卡片 */
.resource-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(0, 188, 212, 0.1);
    position: relative;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: var(--transition);
}

.resource-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.resource-card:hover::before {
    transform: scaleX(1);
}

.resource-card-header {
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.resource-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.resource-card-header-content {
    flex: 1;
}

.resource-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.resource-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.resource-tag {
    padding: 4px 12px;
    background: rgba(0, 188, 212, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.resource-card-body {
    padding: 0 20px 20px;
}

.resource-card-description {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.resource-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid rgba(136, 146, 176, 0.2);
}

.resource-difficulty {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
    font-size: 13px;
}

.difficulty-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.difficulty-dot.beginner {
    background: #4caf50;
}

.difficulty-dot.intermediate {
    background: #ff9800;
}

.difficulty-dot.advanced {
    background: #f44336;
}

.resource-download {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.resource-download:hover {
    transform: translateX(5px);
}

/* 无结果提示 */
.no-results {
    text-align: center;
    padding: 80px 20px;
    display: none;
}

.no-results-icon {
    font-size: 80px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-results h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.no-results p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* 底部样式 */
.footer {
    background: var(--darker-bg);
    padding: 40px 0 30px;
    margin-top: 60px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(136, 146, 176, 0.2);
}

.footer-bottom p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .search-title {
        font-size: 32px;
    }

    .search-subtitle {
        font-size: 16px;
    }

    .search-box {
        flex-direction: column;
    }

    .search-btn {
        width: 100%;
        height: 50px;
    }

    .filter-container {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        width: 100%;
    }

    .reset-btn {
        width: 100%;
    }

    .filter-section {
        position: relative;
        top: 0;
    }

    .resources-grid {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.resource-card {
    animation: fadeInUp 0.5s ease;
}