/* ============================================
   common.css — 共享布局与组件样式
   所有主题页面共用，通过 CSS 变量适配各主题配色
   ============================================ */

/* === Reset === */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* === 布局容器 === */
.wrapper {
    max-width: var(--wrapper-width, 960px);
    margin: 0 auto;
    padding: 24px 20px 40px;
    position: relative;
    z-index: 1;
}

/* === 风格切换栏 === */
.style-bar {
    background: var(--bar-bg);
    backdrop-filter: var(--bar-blur, none);
    -webkit-backdrop-filter: var(--bar-blur, none);
    border: 1px solid var(--border);
    border-radius: var(--bar-radius, 8px);
    margin-bottom: 24px;
    overflow: hidden;
}
.ss-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    cursor: pointer;
    user-select: none;
}
.ss-header:hover { background: var(--ss-hover-bg); }
.ss-label {
    font-size: var(--ss-font-size, .8rem);
    color: var(--text-dim);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.ss-arrow {
    font-size: .6rem;
    color: var(--text-dim);
    transition: transform .3s;
}
.style-bar.open .ss-arrow { transform: rotate(180deg); }
.ss-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
    padding: 0 16px;
}
.style-bar.open .ss-body { max-height: 160px; padding: 0 16px 12px; }
.ss-links { display: flex; flex-wrap: wrap; gap: 6px; }
.ss-links a {
    padding: 5px 12px;
    border-radius: var(--ss-link-radius, 4px);
    font-size: var(--ss-link-font-size, .75rem);
    text-decoration: none;
    color: var(--text-dim);
    background: var(--ss-link-bg);
    border: 1px solid var(--ss-link-border);
    transition: all .2s;
    letter-spacing: var(--ss-link-spacing, 0);
}
.ss-links a:hover {
    color: var(--accent);
    background: var(--ss-link-hover-bg);
    border-color: var(--accent);
}
.ss-links a.active {
    color: var(--accent);
    background: var(--ss-link-active-bg);
    border-color: var(--accent);
    box-shadow: var(--ss-link-active-shadow);
}

/* === Hero 区域 === */
.hero {
    text-align: center;
    padding: 36px 16px 32px;
    margin-bottom: 32px;
    border: var(--hero-border, 1px solid var(--border));
    border-radius: var(--hero-radius, 0);
    background: var(--hero-bg, transparent);
    position: relative;
}
.avatar-wrap {
    width: var(--avatar-size, 88px);
    height: var(--avatar-size, 88px);
    border-radius: var(--avatar-radius, 50%);
    border: 2px solid var(--accent);
    padding: 3px;
    margin: 0 auto 16px;
    overflow: hidden;
    box-shadow: var(--avatar-shadow);
    position: relative;
}
.avatar-wrap img {
    width: 100%;
    height: 100%;
    border-radius: var(--avatar-radius, 50%);
    object-fit: cover;
}
.hero h1 {
    font-size: 1.4rem;
    letter-spacing: 2px;
    color: var(--text);
}
.motto {
    color: var(--text-dim);
    font-size: .9rem;
    letter-spacing: 3px;
    margin-top: 8px;
}

/* === 站点卡片网格 === */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.7rem;
    margin-bottom: 32px;
}
.site-card {
    padding: 0.8rem;
    border: 1px solid var(--card-border, var(--border));
    border-radius: var(--card-radius, 8px);
    background: var(--card-bg);
    transition: all .3s ease;
    position: relative;
    overflow: hidden;
}
.site-card a {
    text-decoration: none;
    color: var(--text);
    display: block;
    position: relative;
    z-index: 1;
}
.site-card:hover {
    border-color: var(--accent);
    background: var(--card-hover-bg);
    transform: var(--card-hover-transform, translateY(-2px));
    box-shadow: var(--card-hover-shadow);
}
.site-card .site-name {
    font-size: var(--card-name-size, .9rem);
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.site-card .site-desc {
    font-size: var(--card-desc-size, .72rem);
    color: var(--text-dim);
    line-height: 1.4;
}

/* === 章节标题 === */
.section-title {
    font-size: var(--section-font-size, 1rem);
    font-weight: 600;
    color: var(--text);
    letter-spacing: var(--section-spacing, 0);
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border), transparent);
}

/* === 页脚 === */
.footer-bar,
.footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 16px;
    margin-top: 20px;
    border-top: 1px solid var(--border);
}
.contact-links,
.contact {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}
.contact-links a,
.contact a {
    text-decoration: none;
    color: var(--text-dim);
    font-size: .85rem;
    transition: color .2s;
}
.contact-links a:hover,
.contact a:hover { color: var(--accent); }
.copyright {
    font-size: .75rem;
    color: var(--text-dim);
    line-height: 1.8;
    margin-top: 8px;
}
.copyright a {
    text-decoration: none;
    color: var(--text-dim);
}
.copyright a:hover { color: var(--accent); }

/* === 响应式 === */
@media (max-width: 600px) {
    .sites-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.2rem; }
    .ss-links a { padding: 4px 10px; font-size: .7rem; }
}