/* 免费资源页面样式 */
.free-resources-page {
    background: var(--gradient-gray-soft);
    min-height: 100vh;
}

/* 英雄区域 */
.hero-section {
    padding: var(--spacing-16) 0 var(--spacing-12);
    text-align: center;
    background: var(--gradient-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.hero-section::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 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    opacity: 0.2;
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 800;
    margin-bottom: var(--spacing-5);
    position: relative;
    z-index: 1;
}

.hero-title .highlight {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto var(--spacing-10);
    position: relative;
    z-index: 1;
}

/* 搜索框 */
.search-container {
    max-width: 600px;
    margin: 0 auto var(--spacing-10);
    position: relative;
    z-index: 1;
}

.search-input {
    width: 100%;
    padding: 18px 25px;
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-card-float);
}

.search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--gradient-primary);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: var(--color-white);
    cursor: pointer;
    font-size: 1.2rem;
}

/* 统计信息 */
.stats-container {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: 5px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 分类筛选 */
.filter-section {
    padding: 30px 0;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-tab {
    padding: 10px 25px;
    background: var(--color-bg-light);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    font-weight: 600;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.filter-tab:hover {
    background: var(--color-border);
    transform: translateY(-2px);
}

.filter-tab.active {
    background: var(--gradient-primary);
    color: var(--color-white);
    border-color: transparent;
    box-shadow: 0 5px 15px rgba(139, 92, 246, 0.3);
}

/* 特色区域 */
.featured-section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-10);
}

.section-title {
    font-size: 2.2rem;
    color: var(--color-text-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.section-subtitle {
    color: var(--color-text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* 特色卡片 */
.featured-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.featured-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
}

.featured-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.card-image {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.card-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: var(--color-white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.card-content {
    padding: 25px;
}

.card-title {
    font-size: 1.3rem;
    color: var(--color-text-dark);
    margin-bottom: 10px;
    font-weight: 700;
}

.card-excerpt {
    color: var(--color-text-light);
    margin-bottom: 15px;
    line-height: 1.5;
}

.card-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.card-stats .stat {
    display: flex;
    align-items: center;
    gap: 5px;
}

.card-actions {
    display: flex;
    gap: 10px;
}

.btn-copy-prompt {
    flex: 1;
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-copy-prompt:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-details {
    padding: 12px 20px;
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-details:hover {
    background: var(--color-gray-200);
}

/* 提示词网格 */
.prompts-grid-section {
    padding: 60px 0;
}

.sort-options select {
    padding: 10px 15px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-weight: 600;
    color: var(--color-gray-600);
    background: var(--color-white);
    cursor: pointer;
}

.prompts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.prompt-card.free-card {
    background: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
}

.prompt-card.free-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.free-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: var(--color-white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 推荐区域 */
.recommendation-section {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-gray-100) 100%);
    border-radius: 30px;
    margin: 40px 0;
}

.recommendation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.recommendation-card {
    background: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.recommendation-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.recommendation-card .price-tag {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: var(--color-white);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
}

.card-badge {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-top: 10px;
}

/* 订阅区域 */
.subscribe-section {
    padding: 60px 0;
}

.subscribe-card {
    background: var(--gradient-primary);
    border-radius: 20px;
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    color: var(--color-white);
}

@media (max-width: 768px) {
    .subscribe-card {
        grid-template-columns: 1fr;
    }
}

.subscribe-content {
    padding: 50px;
}

.subscribe-title {
    font-size: 2rem;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.subscribe-benefits {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.subscribe-benefits li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.subscribe-form {
    max-width: 500px;
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.subscribe-input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
}

.btn-subscribe {
    background: linear-gradient(135deg, #f6d365, #fda085);
    color: var(--color-text-dark);
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-subscribe:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.privacy-note {
    font-size: 0.85rem;
    opacity: 0.8;
}

.subscribe-image {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.image-placeholder {
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

/* 加载更多 */
.load-more-container {
    text-align: center;
    margin-top: 40px;
}

.btn-load-more {
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(139, 92, 246, 0.3);
}

.btn-load-more:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

.loading-spinner {
    text-align: center;
    padding: 40px;
    grid-column: 1 / -1;
    color: var(--color-text-light);
}

.loading-spinner i {
    margin-right: 10px;
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-light);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        padding: 0 20px;
    }
    
    .stats-container {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .featured-slider,
    .prompts-grid,
    .recommendation-grid {
        grid-template-columns: 1fr;
    }
    
    .card-actions {
        flex-direction: column;
    }
}