/* SwiftDL site. Dark, quiet and precise: a near-black page with a faint dot
   grid, thin guide lines framing the content, two-tone headings, and live
   mockups of the app on textured backdrops. Tailwind handles layout; this
   file holds the tokens and the pieces every page shares. */
:root {
  --bg: #0a0a0b;
  --panel: #111113;
  --elev: #17171a;
  --border: rgba(255, 255, 255, .08);
  --border-2: rgba(255, 255, 255, .14);
  --text: #f2f2f3;
  --text-2: #c9c9ce;
  --muted: #8b8b93;
  --faint: #55555c;
  --accent: #0a84ff;
  --green: #3fb27f;
  --amber: #e0a33e;
  --red: #e5625b;
  --primary-bg: #f2f2f3;
  --primary-text: #0a0a0b;
  --btn-bg: rgba(255, 255, 255, .06);
  --btn-hover: rgba(255, 255, 255, .1);
  --font: "Geist", "Inter", "Segoe UI", -apple-system, system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
  color-scheme: dark;
}

html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0; min-height: 100vh;
  background-color: var(--bg);
  background-image: radial-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--text);
  font: 400 15px/1.6 var(--font);
  letter-spacing: -.005em;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(10, 132, 255, .35); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.mono { font-family: var(--mono); letter-spacing: 0; }
.muted { color: var(--muted); }
.hairline { border-color: var(--border); }

/* The frame: a centred column with thin vertical guide lines, and rules
   between sections that run the full width of the column. */
.frame { position: relative; max-width: 1200px; margin: 0 auto; border-inline: 1px solid var(--border); }
.rule { border-top: 1px solid var(--border); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4); border-bottom: 1px solid transparent; transition: border-color .2s; }
.site-header.scrolled { border-bottom-color: var(--border); }
.nav-link { color: var(--muted); font-size: 14px; text-decoration: none; transition: color .15s; }
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--text); }

/* Brand mark and logos, drawn in the current text colour. */
.mark, .logo { display: inline-block; flex: none; background: currentColor; -webkit-mask: var(--src) center / contain no-repeat; mask: var(--src) center / contain no-repeat; }
.mark { --src: url(assets/mark.svg); width: 22px; height: 22px; }
.os-windows { --src: url(assets/os/windows.svg); }
.os-macos { --src: url(assets/os/apple.svg); }
.os-linux { --src: url(assets/os/linux.svg); }
.b-chrome { --src: url(assets/brands/googlechrome.svg); }
.b-brave { --src: url(assets/brands/brave.svg); }
.b-vivaldi { --src: url(assets/brands/vivaldi.svg); }
.b-github { --src: url(assets/brands/github.svg); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 40px; padding: 0 16px; border-radius: 9px;
  background: var(--btn-bg); color: var(--text); box-shadow: inset 0 0 0 1px var(--border);
  font: 500 14px/1 var(--font); white-space: nowrap; text-decoration: none; cursor: pointer;
  transition: background .15s, opacity .15s, box-shadow .15s;
}
.btn:hover { background: var(--btn-hover); box-shadow: inset 0 0 0 1px var(--border-2); }
.btn.primary { background: var(--primary-bg); color: var(--primary-text); box-shadow: none; }
.btn.primary:hover { opacity: .9; }
.btn.lg { height: 46px; padding: 0 20px; font-size: 15px; border-radius: 10px; }
.btn.sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn .sep { width: 1px; align-self: stretch; margin: 10px 2px; background: var(--border-2); }
[data-icon] { display: inline-flex; flex: none; }
[data-icon] svg { width: 100%; height: 100%; }

/* Type */
.label { font: 400 13px/1 var(--mono); color: var(--muted); letter-spacing: 0; }
.h-hero { font-size: clamp(2.5rem, 5.6vw, 4.5rem); line-height: 1.02; font-weight: 500; letter-spacing: -.045em; }
.h-sec { font-size: clamp(1.9rem, 3.8vw, 3rem); line-height: 1.08; font-weight: 500; letter-spacing: -.035em; }
.h-sec .dim, .h-hero .dim { color: var(--faint); }
.lede { color: var(--muted); font-size: 17px; line-height: 1.6; }

/* Stage: the backdrop the app mockups sit on: dark smoke ribbons
   (rendered by tools/render_backdrops.py) under a rough film grain, like a
   photo. The grain is an SVG noise tile, so the images stay small. */
.stage { position: relative; overflow: hidden; isolation: isolate; background: #0b0b0c url(assets/bg/backdrop-graphite.webp) center / cover no-repeat; }
.stage.light { background-image: url(assets/bg/backdrop-silver.webp); }
.stage.blue { background-image: url(assets/bg/backdrop-blue.webp); }
.stage::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .5; mix-blend-mode: screen;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='.95' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .5 -.12'/></filter><rect width='100%' height='100%' filter='url(%23g)'/></svg>");
}
.stage::after { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06); }

/* The segment strip: SwiftDL's motif, a file split into parts that fill
   in one after another. Used as a section divider. */
.strip { display: grid; grid-template-columns: repeat(48, 1fr); gap: 4px; height: 6px; }
.strip i { background: rgba(255, 255, 255, .06); border-radius: 1px; transition: background .3s; }
.strip i.on { background: rgba(255, 255, 255, .22); }
.strip i.mid { background: var(--text); }

/* Feature rows: three cells split by thin lines. */
.cells { display: grid; }
.cells > * { padding: 28px 20px; }
@media (min-width: 640px) { .cells > * { padding: 32px 48px; } }
@media (min-width: 768px) { .cells.c3 { grid-template-columns: repeat(3, 1fr); } .cells.c3 > * + * { border-left: 1px solid var(--border); } }
@media (max-width: 767px) { .cells > * + * { border-top: 1px solid var(--border); } }
.cells h3 { margin: 0; font-size: 15px; font-weight: 500; color: var(--text); }
.cells p { margin: 8px 0 0; font-size: 14px; color: var(--muted); }

/* App window mockups, drawn in HTML to match the real app. */
.win { border-radius: 12px; background: #101114; box-shadow: 0 0 0 1px rgba(255, 255, 255, .1), 0 30px 80px -20px rgba(0, 0, 0, .8), 0 12px 24px -12px rgba(0, 0, 0, .6); overflow: hidden; color: #eef0f3; font-size: 13px; }
.win-bar { display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px; border-bottom: 1px solid rgba(255, 255, 255, .06); color: #8a8e98; font-size: 12px; }
.win-bar .mark { width: 14px; height: 14px; color: #8a8e98; }
.win-body { padding: 18px 20px 20px; }
.w-name { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.w-sub { display: flex; align-items: center; gap: 6px; margin-top: 2px; color: #8a8e98; font-size: 12px; }
.w-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.w-bar { height: 4px; border-radius: 2px; background: rgba(255, 255, 255, .08); overflow: hidden; }
.w-bar > i { display: block; height: 100%; background: var(--accent); border-radius: 2px; }
.w-meta { display: flex; justify-content: space-between; margin-top: 8px; color: #8a8e98; font-size: 12px; font-variant-numeric: tabular-nums; }
.w-btn { display: inline-flex; align-items: center; height: 28px; padding: 0 12px; border-radius: 7px; background: rgba(255, 255, 255, .07); font-weight: 550; font-size: 12.5px; }
.w-btn.primary { background: #eceef1; color: #0e0f12; }
.lanes { position: relative; height: 10px; border-radius: 3px; background: rgba(255, 255, 255, .05); }
.lanes .slot { position: absolute; top: 0; bottom: 0; border-radius: 2px; background: rgba(255, 255, 255, .09); overflow: hidden; }
.lanes .slot > i { position: absolute; inset: 0 auto 0 0; background: var(--accent); }
.lanes .slot.done > i { background: #5aa2fb; }
.crow { display: grid; grid-template-columns: 22px 70px 1fr 110px; gap: 10px; align-items: center; height: 28px; color: #8a8e98; font-size: 12px; font-variant-numeric: tabular-nums; border-top: 1px solid rgba(255, 255, 255, .05); }
.crow .mini { height: 3px; border-radius: 2px; background: rgba(255, 255, 255, .08); overflow: hidden; }
.crow .mini > i { display: block; height: 100%; background: var(--accent); }
.crow .live { color: #eef0f3; }

/* Timeline (the resume story). */
.tl { position: relative; }
.tl-row { display: grid; grid-template-columns: 54px 1fr; gap: 16px; padding: 14px 0; border-top: 1px solid rgba(255, 255, 255, .06); }
.tl-row:first-child { border-top: 0; }
.tl-time { font: 12px/1.6 var(--mono); color: #6c6e78; }
.tl-tag { display: inline-flex; align-items: center; height: 20px; padding: 0 7px; border-radius: 5px; font: 11.5px/1 var(--mono); }
.tl-sub { margin-top: 4px; color: #8a8e98; font-size: 12.5px; }

/* Platform cards */
.platform { display: flex; flex-direction: column; gap: 22px; }
.alt-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 0; font-size: 14px; color: var(--text-2); text-decoration: none; border-top: 1px solid var(--border); }
.alt-link:hover { color: var(--text); }
.alt-link .ext { font: 12px var(--mono); color: var(--faint); }

/* FAQ */
details.faq { border-top: 1px solid var(--border); }
details.faq summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; font-weight: 500; cursor: pointer; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; font: 300 22px/1 var(--font); color: var(--muted); transition: transform .2s; }
details.faq[open] summary::after { transform: rotate(45deg); }
details.faq p { margin: -6px 0 22px; color: var(--muted); max-width: 64ch; }

/* Shared bits used by the download and changelog pages */
.card { background: var(--panel); border-radius: 14px; box-shadow: inset 0 0 0 1px var(--border); }
kbd { display: inline-flex; align-items: center; height: 20px; padding: 0 6px; border-radius: 5px; font: 500 12px/1 var(--mono); background: var(--btn-bg); color: var(--text-2); box-shadow: inset 0 0 0 1px var(--border); }
pre.cmd { margin: 0; padding: 12px 14px; border-radius: 9px; background: rgba(0, 0, 0, .35); box-shadow: inset 0 0 0 1px var(--border); overflow-x: auto; font: 13px/1.6 var(--mono); }
.notes { color: var(--text-2); font-size: 14.5px; }
.notes h3 { margin: 26px 0 8px; font: 13px var(--mono); color: var(--muted); }
.notes h2 { margin: 26px 0 8px; font-size: 16px; font-weight: 500; color: var(--text); }
.notes p { margin: 8px 0; }
.notes ul { margin: 8px 0; padding-left: 18px; list-style: disc; }
.notes ol { margin: 8px 0; padding-left: 20px; list-style: decimal; }
.notes li { margin: 6px 0; }
.notes li::marker { color: var(--faint); }
.notes strong { color: var(--text); font-weight: 500; }
.notes a { color: var(--accent); text-decoration: none; }
.notes a:hover { text-decoration: underline; }
.notes code { padding: 1px 5px; border-radius: 5px; background: var(--btn-bg); font: .88em var(--mono); }
.notes > :first-child { margin-top: 0; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}