/* 玻璃文件夹，配 js/glass-folder.js。照 Glass Folder Cards 的样式改的，只留浅色（乳白玻璃）一种 */
.gfolder { display: flex; flex-direction: column; gap: 4px; }
.gfolder > a { font-size: 14px; }

.gf-root {
  --gf-px: 0; --gf-py: 0;
  --gf-ease: cubic-bezier(.2, .8, .2, 1);
  --gf-spring: cubic-bezier(.34, 1.36, .5, 1);
  --gf-hinge: 0deg; --gf-lift: 42px; --gf-spread: 0px; --gf-fan: 0deg; --gf-stack: 15px;
  --gf-ink: #141416; --gf-ink-soft: rgba(20, 20, 22, .55);
  position: relative; display: inline-block; flex: none; vertical-align: top;
  -webkit-tap-highlight-color: transparent; isolation: isolate;
}
.gf-root:hover, .gf-root:focus-within { --gf-hinge: -11deg; --gf-lift: -34px; --gf-spread: 8px; --gf-fan: 1.4deg; --gf-stack: 10px; }
.gf-root[data-open] { --gf-hinge: -24deg; --gf-lift: -96px; --gf-spread: 40px; --gf-fan: 5deg; --gf-stack: 34px; }

.gf-stage { position: absolute; left: 0; top: 0; width: 340px; height: 272px; transform-origin: 0 0; }
.gf-tilt {
  position: absolute; inset: 0;
  transform: perspective(1400px) rotateX(calc(var(--gf-py) * -3deg)) rotateY(calc(var(--gf-px) * 4deg));
  transition: transform .9s var(--gf-ease);
  will-change: transform;
}
.gf-shadow {
  position: absolute; left: 18px; right: 18px; bottom: -6px; height: 60px; border-radius: 40px;
  background: rgba(16, 18, 24, .3); filter: blur(22px);
  transform: translateX(calc(var(--gf-px) * -8px));
  transition: transform .9s var(--gf-ease), opacity .9s var(--gf-ease);
}

.gf-back { position: absolute; inset: 0; overflow: hidden; background: linear-gradient(180deg, #f3f3f4 0%, #e3e3e6 100%); }
.gf-art {
  position: absolute; left: -12px; top: -12px; max-width: none;
  transform: translate(calc(var(--gf-px) * -7px), calc(var(--gf-py) * -6px)) scale(1.02);
  transition: transform 1.1s var(--gf-ease), opacity 1.2s var(--gf-ease), filter 1.2s var(--gf-ease);
  opacity: 0; filter: blur(14px) saturate(.6);
}
.gf-art[data-ready] { opacity: 1; filter: none; }
.gf-back-sheen {
  position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .22) 0%, rgba(255, 255, 255, 0) 22%),
    radial-gradient(120% 80% at 80% 0%, rgba(255, 255, 255, .16), rgba(255, 255, 255, 0) 60%);
}
.gf-rim { position: absolute; left: 0; top: 0; max-width: none; overflow: visible; pointer-events: none; fill: none; }
.gf-back-rim { width: 340px; height: 272px; }
.gf-back-rim path { stroke: rgba(255, 255, 255, .45); stroke-width: 1; }

/* ---- 文件 ---- */
.gf-files { position: absolute; inset: 0; z-index: 5; pointer-events: none; clip-path: inset(-400px -400px 10px -400px); }
.gf-sheet {
  all: unset; box-sizing: border-box; position: absolute; left: 34px; top: 96px; width: 272px; height: 184px;
  border-radius: 16px; overflow: hidden; cursor: pointer; pointer-events: auto;
  background: linear-gradient(180deg, #ffffff 0%, #f2f2f0 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 0 0 .5px rgba(0, 0, 0, .1), 0 10px 26px -8px rgba(10, 12, 20, .28);
  transform-origin: 50% 100%; will-change: transform;
  transform:
    translate(calc(var(--gf-jx) + var(--gf-slot) * var(--gf-spread)), calc(var(--gf-lift) + var(--gf-depth) * var(--gf-stack) * -1))
    rotate(calc(var(--gf-jr) + var(--gf-slot) * var(--gf-fan)));
  transition: transform .75s var(--gf-spring) calc(var(--gf-depth) * 40ms), box-shadow .4s var(--gf-ease), translate .9s var(--gf-ease), opacity .9s var(--gf-ease);
}
.gf-sheet--art { background: #1a1a1d; }
.gf-root[data-open] .gf-sheet:hover, .gf-root[data-open] .gf-sheet:focus-visible {
  transform:
    translate(calc(var(--gf-jx) + var(--gf-slot) * var(--gf-spread)), calc(var(--gf-lift) + var(--gf-depth) * var(--gf-stack) * -1 - 18px))
    rotate(calc(var(--gf-slot) * var(--gf-fan) * .6));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 0 0 .5px rgba(0, 0, 0, .1), 0 22px 40px -12px rgba(10, 12, 20, .42);
  transition-delay: 0s;
}
.gf-sheet:focus-visible { outline: 2px solid var(--blue, #4c8dff); outline-offset: 2px; }
.gf-sheet-art {
  position: absolute; left: 0; top: 0; width: 272px; height: 184px; max-width: none;
  transition: opacity .9s var(--gf-ease), filter .9s var(--gf-ease); opacity: 0; filter: blur(10px);
}
.gf-sheet-art[data-ready] { opacity: 1; filter: none; }
.gf-sheet--art::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 0, 0, .42) 0%, rgba(0, 0, 0, 0) 34%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .2);
}
.gf-sheet-head {
  position: absolute; left: 14px; right: 14px; top: 11px; z-index: 1;
  display: flex; align-items: baseline; justify-content: space-between; gap: 10px; white-space: nowrap;
}
.gf-sheet-name { overflow: hidden; text-overflow: ellipsis; font-size: 13px; font-weight: 600; color: #18181b; }
.gf-sheet-meta { flex: none; font: 10px/1 ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: .02em; color: rgba(24, 24, 27, .5); }
.gf-sheet--art .gf-sheet-name { color: #fafafa; }
.gf-sheet--art .gf-sheet-meta { color: rgba(250, 250, 250, .7); }
.gf-lines { position: absolute; left: 14px; right: 14px; top: 40px; display: flex; flex-direction: column; gap: 9px; }
.gf-lines i { display: block; height: 5px; border-radius: 3px; background: rgba(24, 24, 27, .08); }
.gf-lines i:first-child { height: 9px; margin-bottom: 4px; background: rgba(24, 24, 27, .14); }

/* ---- 前面的磨砂玻璃，铰链在底边 ---- */
.gf-front {
  position: absolute; left: 0; top: 74px; width: 340px; height: 198px; z-index: 10;
  -webkit-backdrop-filter: blur(22px) saturate(1.5); backdrop-filter: blur(22px) saturate(1.5);
  transform-origin: 50% 100%; transform: perspective(760px) rotateX(var(--gf-hinge));
  /* 带磨砂的玻璃一直留在自己的合成层上：动画开始 / 结束时临时建、拆合成层，Chrome 偶尔会把磨砂那一块画成白的（分类页的白闪） */
  will-change: transform; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  transition: transform .8s var(--gf-spring), translate 1s var(--gf-ease), opacity 1s var(--gf-ease);
}
.gf-tint { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(255, 255, 255, .16) 0%, rgba(255, 255, 255, .5) 42%, rgba(252, 252, 252, .93) 100%); }
.gf-spec {
  position: absolute; inset: 0; pointer-events: none; mix-blend-mode: soft-light; opacity: .9;
  background: radial-gradient(260px 200px at calc(50% + var(--gf-px) * 46%) calc(30% + var(--gf-py) * 40%), rgba(255, 255, 255, .5), rgba(255, 255, 255, 0) 70%);
}
.gf-front-rim { width: 340px; height: 198px; }
.gf-front-rim path { stroke-width: 2.4; transition: stroke-width .3s var(--gf-ease); }
.gf-hit { all: unset; position: absolute; inset: 0; z-index: 1; cursor: pointer; }
.gf-hit:focus-visible ~ .gf-label .gf-title { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 4px; }
.gf-front:has(.gf-hit:focus-visible) .gf-front-rim path { stroke-width: 5; }

.gf-label { position: absolute; z-index: 2; display: flex; flex-direction: column; gap: 4px; max-width: 210px; pointer-events: none; color: var(--gf-ink); }
.gf-root[data-place="bottom-left"] .gf-label { left: 28px; bottom: 32px; }
.gf-root[data-place="top-left"] .gf-label { left: 28px; top: 34px; }
.gf-root[data-place="top-right"] .gf-label { right: 32px; top: 52px; align-items: flex-start; }
.gf-title { font-size: 20px; font-weight: 600; line-height: 1.2; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gf-meta { font: 12px/1.3 ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: .03em; color: var(--gf-ink-soft); white-space: nowrap; }

/* ---- 右下角的键：去分类页 / 作者页 ---- */
.gf-key {
  all: unset; box-sizing: border-box; position: absolute; right: 22px; bottom: 22px; z-index: 12;
  width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; cursor: pointer; color: #fff;
  background: radial-gradient(120% 90% at 50% 0%, #3a3a3f 0%, #121214 55%, #050506 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), inset 0 -3px 8px rgba(0, 0, 0, .7), 0 0 0 1px rgba(0, 0, 0, .75), 0 14px 22px -8px rgba(0, 0, 0, .55), 0 3px 6px -2px rgba(0, 0, 0, .35);
  transition: transform .35s var(--gf-spring), box-shadow .35s var(--gf-ease), opacity .6s var(--gf-ease) .7s, scale .7s var(--gf-spring) .7s;
}
.gf-key:hover { transform: translateY(-2px); }
.gf-key:active { transform: translateY(0) scale(.93); transition-duration: .12s; }
.gf-key:focus-visible { outline: 2px solid var(--blue, #4c8dff); outline-offset: 3px; }
.gf-glyph { display: block; width: 24px; height: 24px; max-width: none; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

/* ---- 入场：自己组装起来 ---- */
.gf-root:not([data-entered]) .gf-back, .gf-root:not([data-entered]) .gf-back-rim { translate: 0 22px; opacity: 0; }
.gf-root:not([data-entered]) .gf-sheet { translate: 0 -120px; opacity: 0; }
.gf-root:not([data-entered]) .gf-front { translate: 0 46px; opacity: 0; }
.gf-root:not([data-entered]) .gf-key { opacity: 0; scale: .6; }
.gf-root:not([data-entered]) .gf-shadow { opacity: 0; }
.gf-back, .gf-back-rim { transition: translate 1s var(--gf-ease), opacity .9s var(--gf-ease); }
.gf-root[data-entered] .gf-sheet { transition-delay: calc(var(--gf-depth) * 40ms), 0s, calc(.18s + var(--gf-depth) * 90ms), calc(.18s + var(--gf-depth) * 90ms); }
.gf-root[data-entered] .gf-front { transition-delay: 0s, .42s, .42s; }

@media (prefers-reduced-motion: reduce) {
  .gf-root *, .gf-root *::before, .gf-root *::after { transition-duration: 0s !important; transition-delay: 0s !important; animation: none !important; }
  .gf-tilt { transform: none; }
}

/* ---- 摆放：点阵桌面 ---- */
.gf-desk {
  position: relative; display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-end;
  gap: 44px 44px; padding: 60px 16px 40px; margin-top: 8px; border-radius: 16px; overflow: hidden;
  background: var(--surface, #fcfcfb); border: 1px solid var(--rule, #e6e4de);
}
.gf-desk::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .13; color: var(--ink, #1f1f1d);
  background-image: radial-gradient(currentColor 1.1px, transparent 1.4px); background-size: 22px 22px;
}
.gf-desk > * { position: relative; }
/* 分类页：不要底板，直接放在博客背景上，一排三个 */
.gf-desk.bare { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); justify-items: center; gap: 56px 24px; padding: 64px 0 8px; background: none; border: 0; border-radius: 0; overflow: visible; }
.gf-desk.bare::before { display: none; }
@media (max-width: 860px) { .gf-desk.bare { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .gf-desk.bare { grid-template-columns: 1fr; } }
.gf-hint { margin-top: 14px; text-align: center; font: 11px/1.4 ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: .18em; color: var(--ink-3, #8a8984); }
.gf-all { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 14px; font-size: 13.5px; }