/* 首页样式 - Hero 区 + 响应式文章卡片网格 */

/* ===== Hero 区 ===== */
.hero {
    position: relative;
    padding: 64px 0 48px;
    margin-bottom: 32px;
    text-align: center;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top, var(--accent-soft) 0%, transparent 60%);
    opacity: 0.7;
    z-index: -1;
}
.hero h1 {
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 14px;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.hero p {
    color: var(--text-muted);
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    max-width: 560px;
    margin: 0 auto 22px;
    line-height: 1.7;
}
.hero .hero-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
.hero .hero-actions a {
    padding: 10px 22px;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.hero .btn-primary {
    background: var(--gradient-brand);
    color: #fff;
    box-shadow: 0 8px 20px -6px rgba(99, 102, 241, 0.5);
}
.hero .btn-primary:hover { transform: translateY(-2px); text-decoration: none; color: #fff; box-shadow: 0 12px 26px -6px rgba(99, 102, 241, 0.6); }
.hero .btn-ghost {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
}
.hero .btn-ghost:hover { transform: translateY(-2px); text-decoration: none; color: var(--accent); border-color: var(--accent); }

/* 兼容旧 header（无 hero 时） */
header { text-align: center; padding: 40px 0 30px; border-bottom: 1px solid var(--border); margin-bottom: 30px; }
header h1 { font-size: 2em; color: var(--text); }
header p { color: var(--text-muted); margin-top: 8px; }
.rss-link { color: #e67e22; font-size: 0.9em; }

/* ===== 文章卡片网格 ===== */
.article-list { list-style: none; display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 820px) { .article-list { grid-template-columns: 1fr 1fr; } }

.article-item {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 26px;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
    display: flex;
    flex-direction: column;
}
.article-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: var(--border-strong);
}
.article-item::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    background: var(--gradient-brand);
    opacity: 0;
    transition: opacity var(--transition);
}
.article-item:hover::before { opacity: 1; }

.article-item h2 {
    font-size: 1.18rem;
    line-height: 1.4;
    margin-bottom: 10px;
    font-weight: 650;
    letter-spacing: -0.01em;
}
.article-item h2 a { color: var(--text); }
.article-item h2 a:hover { color: var(--accent); text-decoration: none; }

.article-meta {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.article-meta .category-badge { margin-right: 2px; }
.article-meta .reading-time { font-size: 0.8em; color: var(--text-faint); }
.article-meta .tag { margin-right: 0; }

.article-summary {
    color: var(--text-muted);
    font-size: 0.93rem;
    line-height: 1.65;
    margin-top: auto;
    display: -webkit-box;
    line-clamp: 3;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
}
.empty-state .empty-icon { font-size: 2.4rem; margin-bottom: 12px; opacity: 0.5; }

/* ===== 分页 ===== */
.pagination { text-align: center; margin: 40px 0 10px; display: flex; justify-content: center; align-items: center; gap: 6px; }
.pagination a, .pagination .current {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 40px; height: 40px; padding: 0 14px;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text); font-size: 0.9rem; font-weight: 500;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.pagination a:hover { background: var(--accent); color: #fff; border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.pagination .current { background: var(--accent-soft); color: var(--accent); border-color: transparent; cursor: default; }

/* 单列时卡片更舒展 */
@media (max-width: 819px) {
    .article-item { padding: 22px; }
}