:root {
    --bear-green: #27ae60;
    --bear-green-hover: #219150;
    --bear-green-light: #e8f5e9;
    --bg-body: #f4f7f6;
    --bg-card: #ffffff;
    --text-main: #2c3e50;
    --text-sub: #7f8c8d;
    --border-color: #e9ecef;
    --shadow: 0 4px 12px rgba(0,0,0,0.05);
    --transition: all 0.2s ease;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-body: #121212;
        --bg-card: #1e1e1e;
        --text-main: #e0e0e0;
        --text-sub: #a0a0a0;
        --border-color: #333;
        --shadow: 0 4px 12px rgba(0,0,0,0.3);
        --bear-green-light: rgba(39, 174, 96, 0.15);
    }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
}

.container { max-width: 800px; margin: 0 auto; padding: 0 15px; }

/* --- 头部与搜索 --- */
header { 
    background: var(--bg-card); 
    padding: 20px 0; 
    border-bottom: 1px solid var(--border-color);
    position: sticky; top: 0; z-index: 100;
    box-shadow: var(--shadow);
}
.header-top { display: flex; align-items: center; gap: 10px; margin-bottom: 15px; }
.logo {  height: 28px; }
h1 { font-size: 1.15rem; font-weight: 800; }

.search-row { display: flex; gap: 10px; }
.search-input {
    flex: 1; padding: 10px 15px; border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-body); color: var(--text-main);
    outline: none; transition: var(--transition);
}
.search-input:focus { border-color: var(--bear-green); background: var(--bg-card); }

.btn-sort {
    padding: 0 12px; background: var(--bg-body);
    border: 1px solid var(--border-soft, var(--border-color));
    border-radius: 8px; cursor: pointer; color: var(--text-main);
    font-size: 13px; white-space: nowrap;
}

/* --- 标签过滤 --- */
.tags-cloud { 
    padding: 15px 0; display: flex; flex-wrap: wrap; gap: 8px; 
    border-bottom: 1px solid var(--border-color); margin-bottom: 20px;
}
.tag-pill {
    font-size: 12px; padding: 4px 12px; background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: 20px;
    cursor: pointer; transition: var(--transition); color: var(--text-sub);
}
.tag-pill:hover { border-color: var(--bear-green); color: var(--bear-green); }
.tag-pill.active { background: var(--bear-green); color: white; border-color: var(--bear-green); }

/* --- 列表渲染 --- */
#article-list { display: grid; gap: 12px; min-height: 400px; }
.article-item {
    background: var(--bg-card); padding: 18px; border-radius: 12px;
    box-shadow: var(--shadow); border: 1px solid transparent;
    transition: var(--transition); text-decoration: none; display: block;
}
.article-item:hover { transform: translateY(-2px); border-color: var(--bear-green); }
.article-title { font-size: 1.05rem; font-weight: 700; color: var(--text-main); margin-bottom: 6px; display: block; }
.article-meta { font-size: 0.8rem; color: var(--text-sub); display: flex; justify-content: space-between; }
.small-tag { color: var(--bear-green); font-weight: 600; margin-left: 8px; }

/* --- 漂亮的分页样式 --- */
.pagination {
    display: flex; justify-content: center; align-items: center;
    padding: 40px 0 60px; gap: 6px;
}
.page-btn {
    min-width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
    border-radius: 8px; border: 1px solid var(--border-color);
    background: var(--bg-card); color: var(--text-main);
    cursor: pointer; font-size: 14px; font-weight: 600;
    transition: var(--transition); text-decoration: none;
}
.page-btn:hover:not(.disabled):not(.active) {
    border-color: var(--bear-green); color: var(--bear-green);
    background: var(--bear-green-light);
}
.page-btn.active {
    background: var(--bear-green); color: #fff; border-color: var(--bear-green);
    box-shadow: 0 4px 10px rgba(39, 174, 96, 0.3);
}
.page-btn.disabled {
    opacity: 0.3; cursor: not-allowed;
}
.page-dots { color: var(--text-sub); padding: 0 5px; }

@media (max-width: 600px) {
    .pagination { gap: 4px; }
    .page-btn { min-width: 32px; height: 32px; font-size: 12px; }
}