/* 现代资源分享平台样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 颜色系统 */
    --primary-color: #6366f1;
    --primary-hover: #5855eb;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;

    /* 文本颜色 */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #1e293b;

    /* 背景颜色 */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.8);
    --bg-glass: rgba(15, 23, 42, 0.8);
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* 边框颜色 */
    --border-light: rgba(148, 163, 184, 0.2);
    --border-medium: rgba(148, 163, 184, 0.3);
    --border-strong: rgba(148, 163, 184, 0.5);

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --gradient-bg: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    --gradient-card: linear-gradient(145deg, rgba(30, 41, 59, 0.9) 0%, rgba(51, 65, 85, 0.8) 100%);

    /* 其他 */
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --backdrop-blur: blur(20px);
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--gradient-bg);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* 主要内容区域 */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

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

/* 页面包装器 */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
}

/* 导航栏样式 - 毛玻璃效果 */
.navbar {
    background: var(--bg-glass);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-brand i {
    margin-right: 0.75rem;
    color: var(--primary-color);
    font-size: 1.75rem;
}

.nav-stats {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.stat-item i {
    color: var(--accent-color);
}

/* 搜索区域 - 毛玻璃效果 */
.search-section {
    background: var(--bg-glass);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.search-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    pointer-events: none;
}

.search-bar {
    display: flex;
    margin-bottom: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.search-bar input {
    flex: 1;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    backdrop-filter: var(--backdrop-blur);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

.search-bar button {
    padding: 1rem 1.5rem;
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-bar button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.filter-bar {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.filter-bar select {
    padding: 0.75rem 1rem;
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    min-width: 150px;
    transition: var(--transition);
    backdrop-filter: var(--backdrop-blur);
    cursor: pointer;
}

.filter-bar select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* 资源网格 */
.resources-section {
    padding: 3rem 0;
    position: relative;
}

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

/* 资源卡片 - 现代毛玻璃设计 */
.resource-card {
    background: var(--gradient-card);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

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

.resource-card:hover::before {
    opacity: 1;
}

.resource-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.resource-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    flex: 1;
}



.resource-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.resource-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.resource-category {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 0.375rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.2);
}



.resource-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: 1px solid var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* 无资源提示 */
.no-resources {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-light);
    backdrop-filter: var(--backdrop-blur);
}

.no-resources i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    opacity: 0.5;
}

.no-resources p {
    font-size: 1.1rem;
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: var(--bg-glass);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-top: 1px solid var(--border-light);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .nav-stats {
        gap: 1rem;
    }

    .container {
        padding: 0 15px;
    }

    .resources-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .search-bar {
        max-width: 100%;
    }

    .filter-bar {
        flex-direction: column;
        align-items: center;
    }

    .filter-bar select {
        width: 100%;
        max-width: 300px;
    }

    .resource-card {
        padding: 1.5rem;
    }

    .resource-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }


}

@media (max-width: 480px) {
    .nav-brand {
        font-size: 1.2rem;
    }

    .resource-title {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }

    .btn-sm {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
    }

    .search-bar input,
    .search-bar button {
        padding: 0.75rem 1rem;
    }
}

/* 分页控制样式 */
.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem 0;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
    backdrop-filter: var(--backdrop-blur);
}



.pagination-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination-btn {
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pagination-btn:hover:not(.disabled) {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.pagination-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 600;
}

.pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-ellipsis {
    padding: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .pagination-controls {
        padding: 1rem;
    }

    .pagination-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}