/* ==========================================================================
   Clash中文网 · components.css
   跨页面组件:tab / toc / FAQ / 术语卡 / 下载卡 / 文章卡 / callout / dl-fab
   依赖 base.css 中的 :root 设计令牌
   ========================================================================== */

/* ---------- 1. Tab 切换 ---------- */

.rail-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px;
  background: var(--glass-2);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge);
  border-radius: var(--r-sm);
  margin-bottom: 26px;
}

.rail-tabs [role="tab"] {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-ctl);
  color: var(--script-dim);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--hover-ease);
}
.rail-tabs [role="tab"] svg { flex-shrink: 0; }
.rail-tabs [role="tab"]:hover { color: var(--script); }
.rail-tabs [role="tab"][aria-selected="true"] {
  color: var(--aurora);
  background: var(--aurora-wash);
  border-color: var(--edge-glow);
}

.rail-panel[hidden] { display: none; }

/* 竖排 tab 变体(首页特性浏览器等) */
.rail-tabs--column {
  flex-direction: column;
  align-items: stretch;
  margin-bottom: 0;
}
.rail-tabs--column [role="tab"] {
  justify-content: flex-start;
  text-align: left;
  white-space: normal;
}

/* ---------- 2. 长页分类跳转导航(toc) ---------- */

.toc-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px;
  margin: 0 0 34px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge-glow);
  border-radius: var(--r-sm);
  box-shadow: inset 0 0 0 1px var(--edge-glow-soft);
}

.toc-strip a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--edge);
  border-radius: var(--r-pill);
  color: var(--script-dim);
  font-size: 0.86rem;
  font-weight: 600;
  white-space: nowrap;
}
.toc-strip a::before {
  content: "#";
  font-family: var(--font-mono);
  color: var(--aurora);
  flex-shrink: 0;
}
.toc-strip a:hover {
  color: var(--script);
  border-color: var(--edge-glow);
  filter: none;
}

/* 分类锚点标题偏移,避免被 sticky 顶栏遮住 */
.toc-anchor { scroll-margin-top: 90px; }

/* ---------- 3. FAQ 折叠项 ---------- */

.fold-item {
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge);
  border-radius: var(--r-sm);
  margin-bottom: 12px;
  transition: var(--hover-ease);
}
.fold-item:hover { border-color: var(--edge-glow); }
.fold-item[open] {
  border-color: var(--edge-glow);
  box-shadow: inset 0 0 0 1px var(--edge-glow-soft);
}

.fold-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--script);
}
.fold-item summary::-webkit-details-marker { display: none; }
.fold-item summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--edge-glow);
  border-radius: var(--r-xs);
  color: var(--aurora);
  flex-shrink: 0;
}
.fold-item[open] summary::before { content: "−"; }

.fold-body {
  padding: 0 20px 18px 58px;
  color: var(--script-dim);
  font-size: 0.92rem;
}
.fold-body p:last-child { margin-bottom: 0; }

/* ---------- 4. 术语卡 ---------- */

.term-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.term-grid > * { min-width: 0; }

.term-card {
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  padding: 22px;
  min-width: 0;
  transition: var(--hover-ease);
}
.term-card:hover { border-color: var(--edge-glow); filter: brightness(1.06); }

.term-card .term-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--aurora);
  margin-bottom: 8px;
}
.term-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  overflow-wrap: anywhere;
}
.term-card p {
  margin: 0;
  color: var(--script-dim);
  font-size: 0.88rem;
}

/* ---------- 5. 下载客户端卡片 ---------- */

.client-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.client-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  padding: 24px 28px;
  min-width: 0;
  transition: var(--hover-ease);
}
.client-card:hover { border-color: var(--edge-glow); }
.client-card > * { min-width: 0; }

/* 首推卡:极光内发光描边 */
.client-card--prime {
  border-color: var(--edge-glow);
  box-shadow:
    inset 0 0 0 1px var(--edge-glow-soft),
    inset 0 0 30px var(--aurora-wash);
}

.client-card .client-name {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 1.12rem;
  font-weight: 800;
}
.client-card .client-desc {
  margin: 0;
  color: var(--script-dim);
  font-size: 0.88rem;
}
.client-card .client-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--script-dim);
}
.client-card .client-meta span { white-space: nowrap; }

.client-acts {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  flex-shrink: 0;
}

/* 徽章 */
.mark {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 11px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}
.mark--prime {
  color: var(--ink-void);
  background: linear-gradient(135deg, var(--aurora), var(--aurora-deep));
}
.mark--good {
  color: var(--sig-ok);
  background: var(--ok-wash);
  border: 1px solid var(--ok-edge);
}
.mark--eol {
  color: var(--sig-warn);
  background: var(--warn-wash);
  border: 1px solid var(--warn-edge);
}
.mark--err {
  color: var(--sig-err);
  background: var(--err-wash);
  border: 1px solid var(--err-edge);
}

/* 已停止维护卡:整体降饱和 */
.client-card--eol { opacity: 0.72; }
.client-card--eol:hover { opacity: 0.9; }

/* 系统要求小表 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  margin: 22px 0;
}
.spec-table th,
.spec-table td {
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--edge);
}
.spec-table th {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: var(--track);
  text-transform: uppercase;
  color: var(--aurora);
}
.spec-table td { color: var(--script-dim); }
.spec-table td:first-child { color: var(--script); font-weight: 600; }
.table-scroll { overflow-x: auto; max-width: 100%; }
.table-scroll .spec-table { min-width: 520px; }

/* ---------- 6. 博客文章卡 ---------- */

.post-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  padding: 26px;
  min-width: 0;
  color: var(--script);
  transition: var(--hover-ease);
}
a.post-card:hover {
  border-color: var(--edge-glow);
  filter: brightness(1.07);
}

.post-card .post-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--script-dim);
}
.post-card .post-line time { white-space: nowrap; }

.post-card h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.4;
}
.post-card .post-brief {
  margin: 0;
  color: var(--script-dim);
  font-size: 0.88rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card .post-more {
  margin-top: auto;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--aurora);
}

/* 分类标签(内部键→本地化文案由脚本映射后渲染) */
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 11px;
  border: 1px solid var(--edge-glow);
  border-radius: var(--r-pill);
  color: var(--aurora);
  background: var(--aurora-wash);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 18px;
}
.post-grid > * { min-width: 0; }

/* ---------- 7. callout 引用块 ---------- */

.callout {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  margin: 26px 0;
  background: var(--glass-2);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge);
  border-left: 3px solid var(--aurora);
  border-radius: var(--r-sm);
  font-size: 0.92rem;
  color: var(--script-dim);
}
.callout > svg,
.callout > .callout-dot { flex-shrink: 0; margin-top: 3px; }
.callout .callout-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--aurora);
}
.callout strong { color: var(--script); }
.callout p { margin: 0 0 0.6em; }
.callout p:last-child { margin-bottom: 0; }

.callout--warn { border-left-color: var(--sig-warn); }
.callout--warn .callout-dot { background: var(--sig-warn); }
.callout--err { border-left-color: var(--sig-err); }
.callout--err .callout-dot { background: var(--sig-err); }
.callout--ok { border-left-color: var(--sig-ok); }
.callout--ok .callout-dot { background: var(--sig-ok); }

/* ---------- 8. 文末下载引导卡 ---------- */

.endcap {
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
  border: 1px solid var(--edge-glow);
  border-radius: var(--r-lg);
  box-shadow:
    inset 0 0 0 1px var(--edge-glow-soft),
    inset 0 0 34px var(--aurora-wash);
  padding: 34px;
  margin: 46px 0;
}
.endcap h2,
.endcap h3 { margin: 0 0 10px; }
.endcap p { color: var(--script-dim); margin-bottom: 20px; }
.endcap-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 9. 右下角常驻下载引导浮层 ---------- */

.dl-fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 20px;
  border-radius: var(--r-pill);
  background: linear-gradient(135deg, var(--aurora), var(--aurora-deep));
  color: var(--ink-void);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  white-space: nowrap;
  box-shadow: 0 8px 28px var(--fab-halo);
  transition: var(--hover-ease);
}
.dl-fab:hover { filter: brightness(1.1); }
.dl-fab svg { flex-shrink: 0; }

/* ---------- 10. 响应式 ---------- */

@media (max-width: 640px) {
  .client-card {
    grid-template-columns: 1fr;
    padding: 20px 18px;
  }
  .client-acts {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .client-acts .btn { flex: 1 1 auto; }
  .fold-body { padding-left: 20px; }
  .endcap { padding: 26px 20px; }
  .endcap-acts .btn { flex: 1 1 100%; }
  .dl-fab {
    right: 14px;
    bottom: 14px;
    padding: 12px 17px;
    font-size: 0.84rem;
  }
  .post-card { padding: 20px 18px; }
  .rail-tabs { gap: 6px; }
  .rail-tabs [role="tab"] { padding: 9px 13px; font-size: 0.84rem; }
}