/* FolderTintCM — the same dark, scroll-driven page as ScreenShotCM, in the
   folders' own colours. No framework: the chapters reveal and the rail
   follows through site.js. */

:root {
  --bg: #07070b;
  --bg-2: #0d0d14;
  --ink: #f4f2ee;
  --muted: #a3a1ad;
  --faint: #6c6a77;
  --line: rgba(255, 255, 255, .09);
  --glass: rgba(20, 20, 30, .62);
  --accent: #007aff;
  --accent-2: #af52de;
  --sky: #32ade6;
  --mark: #ff2d55;
  --warm: #ff9500;
  --spectrum: linear-gradient(100deg, var(--warm), var(--mark) 34%, var(--accent-2) 66%, var(--accent));
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", "Segoe UI", system-ui, sans-serif;
  --gutter: clamp(16px, 4vw, 56px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
em { font-style: italic; }
::selection { background: var(--accent); color: #fff; }

/* A faint film grain over everything, for depth. */
.grain {
  position: fixed; inset: -50%; z-index: 100; pointer-events: none; opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); } 33% { transform: translate(-3%, 2%); }
  66% { transform: translate(2%, -3%); } 100% { transform: translate(0, 0); }
}

/* ── Floating pill nav ─────────────────────────────────────────────── */
.nav {
  position: fixed; top: 16px; left: 50%; z-index: 50;
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 6px;
  padding: 6px 6px 6px 16px;
  width: max-content; max-width: calc(100% - 32px);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  box-shadow: 0 10px 40px rgba(0, 0, 0, .35);
  transition: transform .5s cubic-bezier(.2, .8, .2, 1), opacity .5s;
}
.nav.hidden { transform: translate(-50%, -140%); opacity: 0; }
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; font-weight: 600; letter-spacing: -.01em; margin-right: 10px; }
.links { display: flex; gap: 2px; }
.links a {
  text-decoration: none; color: var(--muted); font-size: 14px;
  padding: 8px 12px; border-radius: 999px; transition: color .2s, background .2s;
}
.links a:hover { color: var(--ink); background: rgba(255, 255, 255, .06); }
.lang { display: flex; padding: 3px; border-radius: 999px; background: rgba(255, 255, 255, .05); margin: 0 4px; }
.lang button {
  font: 600 12px var(--sans); color: var(--faint); background: none; border: 0;
  padding: 6px 9px; border-radius: 999px; cursor: pointer; letter-spacing: .04em;
}
.lang button[aria-pressed="true"] { color: var(--ink); background: rgba(255, 255, 255, .12); }
.cta {
  text-decoration: none; font-size: 14px; font-weight: 600; color: #fff;
  padding: 9px 16px; border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 18px rgba(0, 122, 255, .4);
}

/* ── Chapter rail ──────────────────────────────────────────────────── */
.rail {
  position: fixed; right: 22px; top: 50%; z-index: 40;
  transform: translateY(-50%);
  display: flex; gap: 14px;
}
.rail ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
.rail a {
  position: relative;
  display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  text-decoration: none; color: var(--faint); font-size: 11px; letter-spacing: .12em;
  transition: color .3s;
}
.rail em {
  position: absolute; right: calc(100% + 4px); white-space: nowrap; pointer-events: none;
  font-style: normal; text-transform: uppercase; opacity: 0; transform: translateX(6px);
  transition: opacity .3s, transform .3s;
}
.rail a:hover em { opacity: 1; transform: none; }
.rail li.active a { color: var(--ink); }
.rail-progress { width: 1px; background: var(--line); position: relative; }
.rail-progress i {
  position: absolute; left: -1px; top: 0; width: 3px; border-radius: 3px; height: 0;
  background: linear-gradient(var(--warm), var(--mark), var(--accent-2), var(--accent));
}

/* ── Shared type ───────────────────────────────────────────────────── */
.eyebrow {
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted);
  margin: 0 0 22px;
}
.eyebrow span:first-child { color: var(--sky); }
h1, h2 {
  font-family: var(--serif); font-weight: 400; letter-spacing: -.02em; margin: 0;
  line-height: .98;
}
h1 em, h2 em {
  background: var(--spectrum);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-right: .08em; margin-right: -.08em;
}
h1 { font-size: clamp(50px, 6.4vw, 108px); }
h2 { font-size: clamp(40px, 5.6vw, 84px); margin-bottom: 26px; }
p { color: var(--muted); margin: 0 0 18px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 14px 22px; border-radius: 999px;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 34px rgba(0, 122, 255, .38);
}
.btn-primary:hover { box-shadow: 0 14px 44px rgba(0, 122, 255, .55); }
.btn-ghost { color: var(--ink); border: 1px solid var(--line); background: rgba(255, 255, 255, .03); }
.btn-ghost:hover { background: rgba(255, 255, 255, .08); }
.btn-xl { font-size: 18px; padding: 18px 30px; }

/* ── Hero ──────────────────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100svh;
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); grid-template-rows: 1fr auto;
  grid-template-areas: "copy shot" "stats stats"; column-gap: 3vw;
  padding: 120px var(--gutter) 40px;
  overflow: hidden; isolation: isolate;
}
.glow { position: absolute; border-radius: 50%; filter: blur(90px); z-index: -1; pointer-events: none; }
.glow-a { width: 60vw; height: 60vw; right: -18vw; top: -18vw; background: radial-gradient(circle, rgba(50, 173, 230, .28), transparent 65%); }
.glow-b { width: 50vw; height: 50vw; left: -14vw; bottom: -20vw; background: radial-gradient(circle, rgba(175, 82, 222, .26), transparent 65%); }
.hero-shot {
  grid-area: shot; align-self: center; position: relative; z-index: -1;
  /* Clear of the chapter rail on the right. */
  margin: 0 28px 0 0;
  perspective: 1600px;
}
.hero-shot > * {
  transform: rotateY(calc(-16deg * (1 - var(--p, 0)))) rotateX(calc(8deg * (1 - var(--p, 0)))) scale(calc(.92 + .08 * var(--p, 0)));
  transform-origin: 70% 50%;
  will-change: transform;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(0deg, var(--bg) 2%, rgba(7, 7, 11, 0) 42%);
}
.hero-copy { grid-area: copy; align-self: center; padding: 24px 0 56px; }
.hero-copy .lede { font-size: clamp(17px, 1.5vw, 20px); max-width: 540px; margin: 28px 0 34px; color: #c9c7d2; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.stats {
  grid-area: stats;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0;
  border-top: 1px solid var(--line);
}
.stats div { padding: 22px 22px 6px 0; }
.stats div + div { padding-left: 22px; border-left: 1px solid var(--line); }
.stats dt { font-family: var(--serif); font-size: clamp(34px, 3.6vw, 54px); line-height: 1; }
.stats dd { margin: 8px 0 0; font-size: 13px; color: var(--muted); }

/* The hero's wall of folders: every colour, floating gently. */
.wall {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: clamp(6px, 1.2vw, 18px);
  padding: clamp(18px, 2.4vw, 34px); border-radius: 22px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .015));
  border: 1px solid var(--line);
  box-shadow: 0 50px 120px rgba(0, 0, 0, .6);
}
.wall figure { margin: 0; text-align: center; }
.wall img { width: 100%; filter: drop-shadow(0 10px 18px rgba(0, 0, 0, .35)); animation: bob 6s ease-in-out infinite; animation-delay: calc(var(--i, 0) * -.45s); }
.wall figcaption { font-size: clamp(10px, .9vw, 13px); color: var(--muted); margin-top: 2px; }
.wall .more img { animation: none; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

/* ── Chapters ──────────────────────────────────────────────────────── */
.chapter {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 88px); align-items: center;
  padding: clamp(96px, 14vh, 180px) calc(var(--gutter) + 56px) clamp(96px, 14vh, 180px) var(--gutter);
  border-top: 1px solid var(--line);
}
.chapter.flip { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.chapter.flip .copy { order: 2; }
.chapter .copy { position: sticky; top: 18vh; align-self: start; padding-top: 4vh; }
.chapter.wide { grid-template-columns: 1fr; }
.chapter.wide .copy { position: static; max-width: 760px; margin: 0 auto; text-align: center; }
.frame { margin: 0; position: relative; }
.frame img.shot {
  border-radius: 12px;
  box-shadow: 0 40px 100px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .07);
}
.frame::before {
  content: ""; position: absolute; inset: 8% 6%; z-index: -1; border-radius: 40px; filter: blur(70px);
  background: linear-gradient(135deg, rgba(255, 149, 0, .16), rgba(255, 45, 85, .14), rgba(0, 122, 255, .2));
}

.note { font-size: 14px; color: var(--faint); }
.list + .note { margin-top: 26px; }
.chips { list-style: none; padding: 0; margin: 26px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: 14px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255, 255, 255, .03); color: #d6d4dd; }
.list { padding: 0; margin: 24px 0 0; list-style: none; display: grid; gap: 12px; }
.list li { position: relative; padding-left: 26px; color: #d6d4dd; }
.list li::before { content: ""; position: absolute; left: 0; top: .62em; width: 12px; height: 2px; background: var(--spectrum); }
.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 28px; margin: 32px 0 26px; }
.specs dt { font-family: var(--serif); font-size: clamp(34px, 3.4vw, 50px); line-height: 1; }
.specs dd { margin: 8px 0 0; font-size: 14px; color: var(--muted); }
kbd {
  font: 500 13px var(--sans); color: var(--ink); white-space: nowrap;
  padding: 3px 8px; border-radius: 7px;
  background: rgba(255, 255, 255, .06); border: 1px solid var(--line); border-bottom-width: 2px;
}

/* Reveal: images rise in as their chapter arrives. */
.reveal { opacity: 0; transform: translateY(60px) scale(.97); transition: opacity 1s cubic-bezier(.2, .8, .2, 1), transform 1.2s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
.copy > * { opacity: 0; transform: translateY(24px); transition: opacity .8s, transform .9s cubic-bezier(.2, .8, .2, 1); }
.copy.in > * { opacity: 1; transform: none; }
.copy.in > *:nth-child(2) { transition-delay: .08s; }
.copy.in > *:nth-child(3) { transition-delay: .16s; }
.copy.in > *:nth-child(4) { transition-delay: .24s; }
.copy.in > *:nth-child(5) { transition-delay: .32s; }

/* ── Explorer and its context menu, drawn with the real icons ──────── */
.explorer {
  position: relative; border-radius: 12px; padding: 10px 0 70px;
  background: #191919; border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 40px 100px rgba(0, 0, 0, .55);
  font: 13px "Segoe UI", var(--sans); color: #e8e8e8;
  min-height: 460px;
}
.explorer .row {
  display: grid; grid-template-columns: 22px 1fr auto; gap: 10px; align-items: center;
  padding: 5px 18px; color: #e8e8e8;
}
.explorer .row img { width: 20px; height: 20px; }
.explorer .row span:last-child { color: #9a9a9a; font-size: 12px; }
.explorer .row.selected { background: rgba(255, 255, 255, .09); box-shadow: inset 2px 0 #4cc2ff; }
.menu {
  position: absolute; min-width: 230px; padding: 4px;
  background: #2c2c2c; border: 1px solid rgba(255, 255, 255, .1); border-radius: 8px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .55);
}
.menu.main { left: 26%; top: 74px; }
.menu.sub { left: calc(26% + 226px); top: 132px; min-width: 190px; }
.menu li { list-style: none; display: flex; align-items: center; gap: 10px; padding: 5px 10px; border-radius: 4px; color: #e8e8e8; }
.menu ul { margin: 0; padding: 0; }
.menu li img, .menu li i { width: 16px; height: 16px; flex: none; }
.menu li.on { background: rgba(255, 255, 255, .08); }
.menu li.dim { color: #9a9a9a; }
.menu li .chev { margin-left: auto; color: #9a9a9a; }
.menu hr { border: 0; border-top: 1px solid rgba(255, 255, 255, .1); margin: 4px 6px; }


/* ── It stays: the same folder, moment after moment ────────────────── */
.persist {
  display: flex; align-items: stretch; justify-content: center; gap: clamp(8px, 1.6vw, 22px);
  padding: clamp(28px, 4vw, 48px) clamp(16px, 3vw, 36px); border-radius: 18px;
  background: rgba(255, 255, 255, .03); border: 1px solid var(--line);
}
.moment {
  flex: 1; max-width: 180px; text-align: center; padding: 18px 10px 16px; border-radius: 14px;
  background: #15151d; border: 1px solid var(--line);
}
.moment img { width: 72%; margin: 0 auto 8px; filter: drop-shadow(0 10px 18px rgba(0, 0, 0, .4)); }
.moment span { display: block; font: 13px "Segoe UI", var(--sans); color: #e8e8e8; }
.moment em { display: block; margin-top: 10px; font-style: normal; font-size: 12px; color: var(--muted); }
.moment em::before { content: "✓ "; color: #34c759; }
.persist .arrow { align-self: center; font-style: normal; color: var(--faint); font-size: 20px; }
@media (max-width: 520px) { .persist .arrow { display: none; } .persist { gap: 8px; padding: 18px 10px; } .moment { padding: 12px 4px; } }

/* ── Sizes: the same folder, sharp at every size ───────────────────── */
.sizes {
  display: flex; align-items: flex-end; justify-content: center; gap: clamp(12px, 2.2vw, 30px); flex-wrap: wrap;
  padding: 40px 30px; border-radius: 18px; background: rgba(255, 255, 255, .03); border: 1px solid var(--line);
}
.sizes figure { margin: 0; text-align: center; }
.sizes img { margin: 0 auto 10px; image-rendering: auto; }
.sizes figcaption { font-size: 12px; color: var(--faint); letter-spacing: .06em; }

/* ── Download ──────────────────────────────────────────────────────── */
.download {
  position: relative; overflow: hidden; isolation: isolate;
  text-align: center; padding: clamp(120px, 18vh, 220px) var(--gutter);
  border-top: 1px solid var(--line);
}
.glow-c { width: 70vw; height: 40vw; left: 15vw; top: 20%; background: radial-gradient(ellipse, rgba(255, 45, 85, .16), rgba(0, 122, 255, .2) 40%, transparent 68%); }
.download h2 { font-size: clamp(48px, 7.4vw, 116px); margin-bottom: 44px; }
.dl-meta { margin: 14px 0 34px; font-size: 14px; }
.store-badge { display: inline-block; border-radius: 10px; transition: transform .2s, filter .2s; }
.store-badge:hover { transform: translateY(-2px); filter: brightness(1.12); }
.store-badge img { display: block; width: 250px; height: auto; }
.dl-store { margin: 14px auto 26px; font-size: 14px; max-width: 620px; }
.dl-note { margin: 14px auto 26px; font-size: 14px; max-width: 620px; }
.dl-facts { list-style: none; padding: 0; margin: 0 auto 30px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 26px; max-width: 900px; }
.dl-facts li { color: #d6d4dd; font-size: 15px; }
.dl-facts li::before { content: "✓"; color: var(--sky); margin-right: 8px; }
.sha { font-size: 12px; color: var(--faint); overflow-wrap: anywhere; }
.sha span { letter-spacing: .14em; margin-right: 6px; }
.sha code { font: 12px ui-monospace, "Cascadia Code", Consolas, monospace; }

/* ── Footer ────────────────────────────────────────────────────────── */
.footer {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  padding: 32px var(--gutter); border-top: 1px solid var(--line); font-size: 14px; color: var(--faint);
}
.footer div { display: flex; align-items: center; gap: 8px; color: var(--muted); font-weight: 600; }
.footer nav { display: flex; gap: 22px; flex-wrap: wrap; }
.footer a { text-decoration: none; color: var(--muted); }
.footer a:hover { color: var(--ink); }
.footer p { margin: 0; color: var(--faint); }

/* ── Privacy page ──────────────────────────────────────────────────── */
.doc { max-width: 760px; margin: 0 auto; padding: 140px var(--gutter) 100px; }
.doc h1 { font-size: clamp(48px, 7vw, 88px); margin-bottom: 18px; }
.doc h2 { font-size: clamp(28px, 3vw, 38px); margin: 46px 0 14px; }
.doc p, .doc li { color: #c9c7d2; }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: 8px; }
.doc code { font: 14px ui-monospace, "Cascadia Code", Consolas, monospace; color: var(--ink); background: rgba(255, 255, 255, .06); padding: 1px 6px; border-radius: 6px; overflow-wrap: anywhere; }
.doc .updated { color: var(--faint); font-size: 14px; }
[data-only]:not(.shown) { display: none; }

/* ── Light or dark: the same picker in both palettes ── */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 1400px; margin: 0 auto; }
.duo img { width: 100%; height: auto; }

/* ── Smaller screens ───────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .rail { display: none; }
  .chapter { padding-right: var(--gutter); }
}
@media (max-width: 900px) {
  .links { display: none; }
  .hero { padding-top: 96px; grid-template-columns: 1fr; grid-template-rows: auto auto auto; grid-template-areas: "shot" "copy" "stats"; }
  .hero-shot { margin: 12px 0 8px; }
  .hero::after { background: linear-gradient(0deg, var(--bg) 0%, rgba(7, 7, 11, 0) 30%); }
  .hero-copy { padding-bottom: 32px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats div:nth-child(3) { padding-left: 0; border-left: 0; }
  .stats div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .chapter, .chapter.flip { grid-template-columns: 1fr; gap: 36px; }
  .chapter.flip .copy { order: 0; }
  .chapter .copy { position: static; padding-top: 0; }
  .duo { grid-template-columns: 1fr; }
  .menu.main { left: 8%; top: 112px; }
  .menu.sub { left: auto; right: 4%; top: 236px; }
  .explorer { min-height: 720px; }
}
@media (max-width: 520px) {
  .brand span { display: none; }
  .nav { padding-left: 12px; }
  .specs { grid-template-columns: 1fr; }
  .wall { grid-template-columns: repeat(5, 1fr); }
  .explorer { min-height: 760px; }
  .menu.main { left: 4%; right: 18%; min-width: 0; }
  .menu.sub { top: 262px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .grain, .wall img { animation: none; }
  .reveal, .copy > * { opacity: 1; transform: none; transition: none; }
  .hero-shot > * { transform: none; }
}