/* ===== 首页技能分享入口 ===== */
.skills-hub {
    margin-top: 60px;
    padding: 4rem 0 3rem;
    background: linear-gradient(180deg, var(--bg-section) 0%, var(--bg-white) 55%);
    min-height: calc(100vh - 60px);
    display: flex;
    align-items: center;
}

.skills-hub .container {
    width: 100%;
}

.skills-hub-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 2rem;
}

.skills-hub-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid var(--orange-200);
    margin-bottom: 1.25rem;
}

.skills-hub-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.25;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.skills-hub-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.skills-search-wrap {
    max-width: 720px;
    margin: 0 auto 1.5rem;
}

.skills-search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.skills-search-box > .fa-search {
    position: absolute;
    left: 18px;
    color: var(--text-light);
    font-size: 1rem;
    pointer-events: none;
}

.skills-search-input {
    width: 100%;
    padding: 16px 48px 16px 48px;
    font-size: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    background: var(--bg-white);
    color: var(--text-heading);
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-md);
}

.skills-search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.12), var(--shadow-md);
}

.skills-search-input::placeholder {
    color: var(--text-light);
}

.skills-search-clear {
    position: absolute;
    right: 12px;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.skills-search-clear:hover {
    background: var(--border);
    color: var(--text-heading);
}

.skills-search-hints {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.85rem;
    padding-left: 4px;
}

.hints-label {
    font-size: 0.8rem;
    color: var(--text-light);
}

.hint-tag {
    padding: 4px 12px;
    border: 1px solid var(--border);
    background: var(--bg-white);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
}

.hint-tag:hover,
.hint-tag.active {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.skills-hub-meta {
    max-width: 960px;
    margin: 0 auto 1rem;
    font-size: 0.85rem;
    color: var(--text-light);
}

.skills-hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
    max-width: 960px;
    margin: 0 auto 1.5rem;
}

.hub-skill-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.35rem;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    color: inherit;
}

.hub-skill-card:hover {
    border-color: var(--orange-200);
    box-shadow: var(--shadow-orange);
    transform: translateY(-2px);
}

.hub-card-body {
    display: block;
    text-decoration: none;
    color: inherit;
    flex: 1;
}

.hub-card-body:hover .hub-card-name {
    color: var(--primary);
}

.hub-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.85rem;
}

.hub-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.hub-card-badge {
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.hub-card-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 0.25rem;
}

.hub-card-subtitle {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 0.6rem;
}

.hub-card-intro {
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--text-muted);
    flex: 1;
    margin-bottom: 0.85rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hub-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.78rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
}

.hub-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.hub-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-light);
    font-size: 0.82rem;
}

.hub-card-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.hub-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 10px;
    border: 1px solid var(--border);
    background: var(--bg-white);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    transition: all 0.2s ease;
    line-height: 1;
}

.hub-action-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.hub-action-btn.active {
    border-color: var(--primary);
    background: var(--primary-light);
    color: var(--primary);
}

.hub-action-btn.btn-like.active i {
    color: #ef4444;
}

.hub-action-btn.btn-favorite.active i {
    color: var(--primary);
}

.hub-action-btn.btn-share.copied {
    border-color: #22c55e;
    color: #22c55e;
    background: #f0fdf4;
}

.hub-action-btn .action-count {
    font-weight: 600;
    min-width: 1ch;
}

.hub-card-detail-link {
    flex-shrink: 0;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.8rem;
    text-decoration: none;
    white-space: nowrap;
}

.hub-card-detail-link:hover {
    text-decoration: underline;
}

.skills-search-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.skills-search-empty i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    opacity: 0.4;
}

.skills-hub-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.skills-hub-actions .btn i {
    margin-left: 6px;
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    .skills-hub {
        padding: 3rem 0 2rem;
        min-height: auto;
    }

    .skills-hub-title {
        font-size: 1.75rem;
    }

    .skills-hub-grid {
        grid-template-columns: 1fr;
    }

    .skills-search-input {
        padding: 14px 44px;
        font-size: 0.95rem;
    }

    .hub-card-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .hub-card-detail-link {
        text-align: center;
        padding-top: 0.25rem;
    }
}