/* 雾光 · 组件样式。颜色、尺寸全部来自 tokens（--bg、--pri、--radius-pill…）。
   --press：按下的弹簧值（可能略小于 0 或大于 1，只用于缩放）；--pc：夹在 0–1 之间，用于混色。 */
.fg { font-family: var(--font-sans); color: var(--ink); -webkit-font-smoothing: antialiased; font-variant-numeric: tabular-nums; }
.fg *, .fg *::before, .fg *::after { box-sizing: border-box; }

/* 舞台：bg + 两团光晕，给玻璃类组件一个真实的底 */
.fg-stage { position: relative; overflow: hidden; background: var(--bg); border-radius: var(--radius-card); padding: 20px; }
.fg-stage::before, .fg-stage::after { content: ""; position: absolute; width: 380px; height: 380px; border-radius: 50%; pointer-events: none; }
.fg-stage::before { left: -150px; top: -190px; background: radial-gradient(circle, var(--glow-1), transparent 70%); }
.fg-stage::after { right: -170px; bottom: -220px; background: radial-gradient(circle, var(--glow-2), transparent 70%); }
.fg-stage > * { position: relative; z-index: 1; }
.fg-row { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; }
.fg-col { display: flex; flex-direction: column; gap: var(--space-3); }

/* ---------- 按钮 ---------- */
.fg-btn { --press: 0; --pc: 0; height: var(--control-capsule); padding: 0 14px; border-radius: var(--radius-pill); border: 0.5px solid transparent; background: transparent;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: 500 14px/1 var(--font-sans); color: var(--muted); cursor: pointer; white-space: nowrap;
  transform: scale(calc(1 - 0.04 * var(--press))); -webkit-tap-highlight-color: transparent; user-select: none; }
.fg-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.fg-btn.pri { background: color-mix(in oklab, var(--pri), var(--pri-press) calc(var(--pc) * 100%)); color: var(--on-pri); border-color: var(--pri-ring); }
.fg-btn.sec { background: color-mix(in oklab, var(--glass), var(--glass-strong) calc(var(--pc) * 100%)); color: var(--ink); border-color: var(--glass-border); }
.fg-btn.ter { padding: 0 8px; font-weight: 400; opacity: calc(1 - 0.3 * var(--pc)); }
.fg-btn.sec { opacity: calc(1 - 0.3 * var(--pc)); }
.fg-btn.big { height: var(--control-big); padding: 0 22px; font-size: 15.5px; font-weight: 600; letter-spacing: 0.2px; transform: scale(calc(1 - 0.03 * var(--press))); }
.fg-btn.lift { box-shadow: var(--pri-lift); }
.fg-btn:disabled { opacity: 0.45; cursor: default; }
.fg-btn:focus-visible, .fg-chip:focus-visible, .fg-seg button:focus-visible, .fg-switch:focus-visible, .fg-icon:focus-visible, .fg-cam:focus-visible, .fg-gr:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* 会变形的按钮：宽度由脚本用弹簧推，内容三层叠在一起 */
.fg-morph { position: relative; overflow: hidden; padding: 0; transition: background-color 0.3s ease; }
.fg-morph > span { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 6px; transition: opacity 0.12s ease; }
.fg-morph .spin, .fg-morph .chk { opacity: 0; }
.fg-morph .spin svg { width: 18px; height: 18px; animation: fg-rot 0.8s linear infinite; }
.fg-morph .chk svg { width: 20px; height: 20px; stroke-width: 2; }
.fg-morph .chk path { stroke-dasharray: 20; stroke-dashoffset: 20; transition: stroke-dashoffset 0.38s cubic-bezier(0.2, 0.8, 0.2, 1); }
.fg-morph[data-state="busy"] .lbl, .fg-morph[data-state="done"] .lbl { opacity: 0; }
.fg-morph[data-state="busy"] .spin { opacity: 1; transition: opacity 0.18s ease 0.13s; }
.fg-morph[data-state="done"] .chk { opacity: 1; }
.fg-morph[data-state="done"] .chk path { stroke-dashoffset: 0; }
.fg-morph[data-state="done"].pri { background: var(--pri-press); }
.fg-morph[data-state="idle"] .lbl { transition: opacity 0.24s ease; }
@keyframes fg-rot { to { transform: rotate(360deg); } }

/* ---------- 圆形图标钮 ---------- */
.fg-icon { --press: 0; --pc: 0; width: var(--control-icon); height: var(--control-icon); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  background: var(--glass); border: 0.5px solid var(--glass-border); color: var(--ink); cursor: pointer; transform: scale(calc(1 - 0.04 * var(--press))); }
.fg-icon svg, .fg-cam svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.fg-cam { --press: 0; --pc: 0; width: var(--control-cam); height: var(--control-cam); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  background: color-mix(in oklab, var(--pri), var(--pri-press) calc(var(--pc) * 100%)); color: var(--on-pri); border: 0.5px solid var(--pri-ring); box-shadow: var(--pri-lift);
  transform: scale(calc(1 - 0.04 * var(--press))); }
.fg-cam svg { width: 24px; height: 24px; }

/* ---------- 选择胶囊 ---------- */
.fg-chip { --press: 0; --pc: 0; height: var(--control-chip); padding: 0 14px; border-radius: var(--radius-pill); font: 400 14px/1 var(--font-sans); cursor: pointer;
  background: var(--glass); color: var(--ink); border: 0.5px solid var(--glass-border); transform: scale(calc(1 - 0.04 * var(--press)));
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease; }
.fg-chip[aria-pressed="true"] { background: color-mix(in oklab, var(--pri), var(--pri-press) calc(var(--pc) * 100%)); color: var(--on-pri); border-color: var(--pri-ring); font-weight: 500; }

/* ---------- 分段选择 ---------- */
.fg-seg { position: relative; display: inline-flex; align-self: flex-start; padding: 2px; border-radius: 10px; background: var(--track); }
.fg-seg.expand { display: flex; align-self: stretch; }
.fg-seg.expand button { flex: 1; }
.fg-seg button { position: relative; z-index: 1; height: 30px; min-width: 46px; padding: 0 10px; border: 0; background: none; border-radius: var(--radius-seg);
  font: 400 13px/1 var(--font-sans); color: var(--muted); cursor: pointer; transition: color 0.22s ease; }
.fg-seg button[aria-checked="true"] { color: var(--ink); font-weight: 500; }
.fg-seg-ind { position: absolute; top: 2px; bottom: 2px; left: 2px; width: 0; border-radius: var(--radius-seg); background: var(--seg-on); box-shadow: var(--seg-shadow); }

/* ---------- 开关 ---------- */
.fg-switch { --on: 0; --onc: 0; position: relative; width: 52px; height: 32px; border-radius: var(--radius-pill); border: 0; padding: 0; cursor: pointer; flex-shrink: 0;
  background: color-mix(in oklab, var(--switch-off), var(--pri) calc(var(--onc) * 100%)); box-shadow: 0 0 0 0.5px color-mix(in oklab, transparent, var(--pri-ring) calc(var(--onc) * 100%)); }
.fg-switch i { position: absolute; top: 3px; left: 3px; width: 26px; height: 26px; border-radius: 13px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
  background: color-mix(in oklab, #ffffff, var(--on-pri) calc(var(--onc) * 100%)); }

/* ---------- 卡片 ---------- */
.fg-card { background: var(--glass); border: 0.5px solid var(--glass-border); border-radius: var(--radius-card); padding: 14px 16px; }
.fg-float { background: var(--float-bg); border: 0.5px solid var(--glass-border); border-radius: var(--radius-bar); box-shadow: inset 0 1px 0 var(--highlight), var(--lift);
  -webkit-backdrop-filter: blur(22px); backdrop-filter: blur(22px); }
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) { .fg-float { background: color-mix(in oklab, var(--bg) 92%, transparent); } }

/* ---------- 设置分组 ---------- */
.fg-group { background: var(--glass); border: 0.5px solid var(--glass-border); border-radius: var(--radius-card); overflow: hidden; }
.fg-gr { --press: 0; --pc: 0; display: flex; align-items: center; gap: 12px; width: 100%; min-height: var(--row-min); padding: 8px 14px; border: 0; text-align: left;
  font: 400 15.5px/1.3 var(--font-sans); color: var(--ink); cursor: pointer; background: color-mix(in srgb, var(--ink) calc(var(--pc) * 5%), transparent); }
.fg-gr + .fg-gr { border-top: 0.5px solid var(--hair); }
.fg-gr .gi { width: 28px; height: 28px; border-radius: var(--radius-seg); background: var(--pri); color: var(--on-pri); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.fg-gr .gi svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.fg-gr .gl { flex: 1; min-width: 0; }
.fg-gr .gv { font-size: 14px; color: var(--muted); white-space: nowrap; }
.fg-gr .gc { color: var(--faint); font-size: 18px; line-height: 1; }

/* ---------- 底部导航 ---------- */
.fg-nav { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); align-items: center; height: var(--nav-height); padding: 0 6px; }
.fg-nav a, .fg-nav button.tab { display: flex; flex-direction: column; align-items: center; gap: 3px; font: 400 11px/1 var(--font-sans); color: var(--muted); background: none; border: 0; cursor: pointer; text-decoration: none; }
.fg-nav svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.fg-nav [aria-current="page"] { color: var(--accent); font-weight: 600; }
.fg-nav .fg-cam { justify-self: center; margin-top: -16px; }

/* ---------- 提示条 ---------- */
.fg-toast { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; padding: 0 18px; border-radius: var(--radius-pill); white-space: nowrap;
  background: var(--pri); color: var(--on-pri); border: 0.5px solid var(--pri-ring); box-shadow: var(--pri-lift); font: 400 14px/1 var(--font-sans); }
.fg-toast b { color: var(--accent); font-weight: 600; cursor: pointer; }

/* ---------- 分区标题 + 列表行 ---------- */
.fg-sec { display: flex; align-items: baseline; gap: 8px; padding-bottom: 8px; border-bottom: 0.5px solid var(--hair); }
.fg-sec .en { font-size: 10.5px; font-weight: 600; letter-spacing: 1.8px; text-transform: uppercase; color: var(--ink); }
.fg-sec .zh { font-size: 12px; color: var(--muted); flex: 1; }
.fg-sec .r { font-size: 12px; color: var(--muted); }
.fg-li { display: flex; align-items: flex-start; padding: var(--row-pad) 0; border-bottom: 0.5px solid var(--hair); }
.fg-li .lead { width: 50px; flex-shrink: 0; padding-top: 2px; font-size: 13px; color: var(--muted); }
.fg-li .t { font-size: 16.5px; font-weight: 500; line-height: 1.4; }
.fg-li .m { font-size: 13px; color: var(--muted); margin-top: 2px; }
.fg-num { font-size: 64px; font-weight: 200; line-height: 0.95; letter-spacing: -1.6px; }

/* ---------- 页面栈：进入详情页 ---------- */
/* .fg-stack 里每个 .fg-page 是一页；Fog.stack(el) 负责推、退和左边缘右滑返回 */
.fg-stack { position: relative; overflow: hidden; background: var(--bg); touch-action: pan-y; }
.fg-page { position: absolute; inset: 0; overflow-y: auto; background: var(--bg); touch-action: pan-y; will-change: transform; }
.fg-page[hidden] { display: none; }
.fg-page::before { content: ""; position: absolute; top: 0; bottom: 0; right: 100%; width: 5%; pointer-events: none;
  background: linear-gradient(to left, rgba(0, 0, 0, 0.016), transparent); }
.fg-stack-dim { position: absolute; inset: 0; background: #000; opacity: 0; pointer-events: none; }
.fg-stack.moving .fg-page { pointer-events: none; }
.fg-back { display: inline-flex; align-items: center; gap: 2px; height: 34px; padding: 0 10px 0 4px; border: 0; background: none; color: var(--ink); font: 400 15px/1 var(--font-sans); cursor: pointer; }
.fg-back svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

@media (prefers-reduced-motion: reduce) { .fg-morph .spin svg { animation: none; } .fg-morph > span, .fg-chip, .fg-seg button, .fg-morph .chk path { transition: none; } }