/* ============================================================
   MetaLab Home Styles — 首页专属样式
   现代化双栏布局，移动端优先，体验至上
   ============================================================ */

/* ---------- Hero Banner ---------- */
.hero-banner {
    position: relative;
    text-align: center;
    padding: 3.5rem 1.5rem 3rem;
    overflow: hidden;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 30%, #2c3e50 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255,255,255,.08) 0%, transparent 60%),
                radial-gradient(circle at 80% 30%, rgba(255,255,255,.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: .5rem;
    letter-spacing: -.02em;
    line-height: 1.15;
}

.hero-accent {
    color: rgba(255,255,255,.65);
    font-weight: 700;
}

.hero-tagline {
    font-size: 1.15rem;
    color: rgba(255,255,255,.75);
    font-weight: 400;
    margin-bottom: .75rem;
}

.hero-welcome {
    font-size: .95rem;
    color: rgba(255,255,255,.55);
    font-weight: 400;
}

/* ---------- Main Layout ---------- */
.home-main {
    padding: 2rem 20px 3rem;
}

.home-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
    align-items: start;
}

/* ---------- Feed (Left) ---------- */
.home-feed {
    min-width: 0;
}

.feed-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.25rem;
}

.feed-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-primary);
}

.feed-more {
    font-size: .88rem;
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: none;
    transition: opacity .2s ease;
}

.feed-more:hover {
    opacity: .75;
}

/* ---------- Article Cards ---------- */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.article-card {
    background: var(--color-surface);
    border-radius: 10px;
    border: 1px solid var(--color-border);
    padding: 1.35rem 1.5rem;
    transition: box-shadow .2s ease, transform .2s ease;
    cursor: default;
}

.article-card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,.08);
    transform: translateY(-1px);
}

.article-body {
    overflow: hidden;
}

.article-title {
    font-size: 1.15rem;
    font-weight: 650;
    margin-bottom: .45rem;
    line-height: 1.4;
}

.article-title a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color .15s ease;
}

.article-title a:hover {
    color: var(--color-accent);
}

.article-excerpt {
    font-size: .9rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: .75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: .35rem;
    font-size: .82rem;
    color: var(--color-secondary);
}

.article-author {
    font-weight: 500;
    color: var(--color-text-light);
}

.meta-dot {
    color: var(--color-border);
}

/* ---------- Empty Feed ---------- */
.empty-feed {
    text-align: center;
    padding: 3.5rem 1.5rem;
    background: var(--color-surface);
    border-radius: 10px;
    border: 1px solid var(--color-border);
}

.empty-icon {
    color: var(--color-border);
    margin-bottom: 1rem;
}

.empty-text {
    font-size: .95rem;
    color: var(--color-text-light);
    margin-bottom: 1.25rem;
}

.btn-primary {
    display: inline-block;
    padding: .6rem 1.8rem;
    background: var(--color-accent);
    color: #fff;
    border-radius: 8px;
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
    transition: background .2s ease, transform .15s ease;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

/* ---------- Sidebar (Right) ---------- */
.home-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: sticky;
    top: 5rem;
}

.sidebar-card {
    background: var(--color-surface);
    border-radius: 10px;
    border: 1px solid var(--color-border);
    padding: 1.35rem 1.5rem;
}

/* --- User Card --- */
.user-card {
    text-align: center;
}

.user-avatar-img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-accent);
    display: block;
    margin: 0 auto .75rem;
}

.user-avatar-fallback {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #2980b9);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto .75rem;
    font-size: 1.6rem;
    font-weight: 700;
    text-transform: uppercase;
}

.guest-avatar {
    background: var(--color-border);
}

.guest-avatar svg {
    color: var(--color-text-light);
}

.user-card-name {
    font-size: 1.1rem;
    font-weight: 650;
    color: var(--color-primary);
    margin-bottom: .25rem;
    word-break: break-all;
}

.user-card-desc {
    font-size: .82rem;
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.user-card-link {
    display: block;
    font-size: .85rem;
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: none;
    padding: .45rem 0;
    border-radius: 6px;
    background: rgba(52,152,219,.06);
    transition: background .15s ease;
}

.user-card-link:hover {
    background: rgba(52,152,219,.12);
}

.btn-login {
    display: block;
    padding: .55rem 0;
    background: var(--color-accent);
    color: #fff;
    border-radius: 8px;
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
    transition: background .2s ease, transform .15s ease;
}

.btn-login:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

/* --- Stats Card --- */
.stats-title {
    font-size: .92rem;
    font-weight: 650;
    color: var(--color-primary);
    margin-bottom: .85rem;
}

.stats-grid {
    display: flex;
    gap: 1rem;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: .25rem;
}

.stat-label {
    font-size: .78rem;
    color: var(--color-text-light);
}

/* --- Links Card --- */
.links-title {
    font-size: .92rem;
    font-weight: 650;
    color: var(--color-primary);
    margin-bottom: .75rem;
}

.links-item {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .55rem .5rem;
    font-size: .88rem;
    color: var(--color-text-light);
    border-radius: 6px;
    text-decoration: none;
    transition: background .15s ease, color .15s ease;
}

.links-item:hover {
    background: var(--color-bg);
    color: var(--color-accent);
}

.links-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .home-grid {
        grid-template-columns: 1fr 280px;
        gap: 1.5rem;
    }

    .hero-title {
        font-size: 2.6rem;
    }
}

@media (max-width: 768px) {
    .hero-banner {
        padding: 2.5rem 1.25rem 2.25rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .home-main {
        padding: 1.5rem 16px 2rem;
    }

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

    .home-sidebar {
        position: static;
    }

    .article-card {
        padding: 1.1rem 1.2rem;
    }

    .article-title {
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    .hero-banner {
        padding: 2rem 1rem 1.75rem;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-welcome {
        font-size: .85rem;
    }

    .feed-title {
        font-size: 1.15rem;
    }

    .home-main {
        padding: 1rem 12px 1.5rem;
    }
}
