/**
 * NexusTools - 骨架屏加载效果
 */

/* ========== 骨架屏基础样式 ========== */
.skeleton {
    position: relative;
    overflow: hidden;
    background: var(--bg-card);
    border-radius: var(--radius);
}

.skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.08) 50%,
        transparent 100%
    );
    animation: skeleton-shimmer 1.5s infinite;
}

[data-theme="light"] .skeleton::after,
.skeleton.light::after {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(200, 150, 200, 0.15) 50%,
        transparent 100%
    );
}

@keyframes skeleton-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ========== 骨架屏元素 ========== */
.skeleton-text {
    height: 16px;
    background: var(--glass);
    border-radius: 4px;
    margin-bottom: 8px;
}

.skeleton-text.short { width: 40%; }
.skeleton-text.medium { width: 70%; }
.skeleton-text.long { width: 100%; }

.skeleton-title {
    height: 24px;
    background: var(--glass);
    border-radius: 6px;
    margin-bottom: 12px;
    width: 60%;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    background: var(--glass);
    border-radius: 50%;
}

.skeleton-icon {
    width: 60px;
    height: 60px;
    background: var(--glass);
    border-radius: var(--radius-sm);
}

.skeleton-button {
    height: 40px;
    background: var(--glass);
    border-radius: var(--radius-sm);
    width: 120px;
}

.skeleton-image {
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    background: var(--glass);
    border-radius: var(--radius);
}

/* ========== 工具卡片骨架屏 ========== */
.skeleton-tool-card {
    display: flex;
    flex-direction: column;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    min-height: 160px;
}

.skeleton-tool-card .skeleton-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.skeleton-tool-card .skeleton-body {
    flex: 1;
}

/* ========== 工具页面骨架屏 ========== */
.skeleton-tool-page {
    padding: 24px;
}

.skeleton-tool-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--glass-border);
}

.skeleton-tool-header .skeleton-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
}

.skeleton-tool-header .skeleton-info {
    flex: 1;
}

.skeleton-workspace {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    min-height: 300px;
}

.skeleton-textarea {
    width: 100%;
    height: 150px;
    background: var(--glass);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.skeleton-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ========== 分类骨架屏 ========== */
.skeleton-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.skeleton-category-card {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.skeleton-category-card .skeleton-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

/* ========== 首页骨架屏 ========== */
.skeleton-hero {
    padding: 60px 24px;
    text-align: center;
}

.skeleton-hero .skeleton-title {
    width: 50%;
    height: 40px;
    margin: 0 auto 16px;
}

.skeleton-hero .skeleton-text {
    width: 70%;
    margin: 0 auto 12px;
}

.skeleton-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 32px;
}

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

.skeleton-stat-number {
    width: 60px;
    height: 32px;
    background: var(--glass);
    border-radius: 6px;
    margin: 0 auto 8px;
}

.skeleton-stat-label {
    width: 80px;
    height: 14px;
    background: var(--glass);
    border-radius: 4px;
    margin: 0 auto;
}

/* ========== 搜索结果骨架屏 ========== */
.skeleton-search-results {
    padding: 16px;
}

.skeleton-search-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    margin-bottom: 8px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

.skeleton-search-item .skeleton-icon {
    width: 40px;
    height: 40px;
}

.skeleton-search-item .skeleton-info {
    flex: 1;
}

/* ========== 加载状态容器 ========== */
.loading-container {
    position: relative;
    min-height: 200px;
}

.loading-container.is-loading > *:not(.skeleton-overlay) {
    visibility: hidden;
}

.skeleton-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
}

/* ========== 淡入动画 ========== */
.fade-in {
    animation: fadeIn 0.3s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .skeleton-tool-header {
        flex-direction: column;
        text-align: center;
    }
    
    .skeleton-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .skeleton-category-grid {
        grid-template-columns: 1fr;
    }
}