/* FAK Drive Share v1.1.0 — FAK LABS Swiss design system.
   International typographic style: hairline rules, huge tight display type,
   uppercase micro-labels, one red accent, black/white/paper. */
:root {
  --red: #E30613;
  --ink: #111111;
  --body: #2b2b2b;
  --muted: #6f6f6f;
  --line: #e4e4e4;
  --rule: #111111;
  --paper: #ffffff;
  --soft: #f6f6f6;
  --ok: #0a7d2c;
  --warn: #b25e00;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--red); color: #fff; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; }
img, svg { display: block; }

/* ---------- micro labels ---------- */
.kicker {
  text-transform: uppercase; letter-spacing: .22em; font-size: 11px; font-weight: 700;
  color: var(--red); margin: 0 0 18px;
}

/* ---------- top bar ---------- */
.topbar { border-bottom: 1px solid var(--rule); background: #fff; position: sticky; top: 0; z-index: 20; }
.topbar-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand-mark { background: var(--red); color: #fff; font-weight: 800; font-size: 12px; padding: 5px 9px; letter-spacing: .1em; }
.brand-name { font-weight: 700; letter-spacing: -.01em; font-size: 17px; color: var(--ink); }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a {
  color: var(--ink); text-decoration: none; font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .14em;
}
.nav a:hover { color: var(--red); }
.nav .who { color: var(--muted); font-size: 12px; text-transform: none; letter-spacing: 0; font-weight: 400;
  max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- hero ---------- */
.hero { padding: 44px 0 36px; border-bottom: 1px solid var(--rule); }
.hero h1 {
  font-size: clamp(38px, 5.5vw, 68px); line-height: 1; letter-spacing: -.04em;
  font-weight: 800; margin: 0 0 14px; color: var(--ink);
}
.hero h1 .arrow { color: var(--red); }
.hero .lede { font-size: 17px; line-height: 1.55; color: var(--body); max-width: 660px; margin: 0 0 26px; }
.how-link { color: var(--ink); font-weight: 700; white-space: nowrap; }
.hero-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 920px; }
.hero-card { border: 1px solid var(--rule); background: #fff; padding: 20px 22px; }
.hero-card h3 { margin: 0 0 6px; font-size: 15px; letter-spacing: -.01em; color: var(--ink); }
.hero-card p { margin: 0 0 14px; font-size: 14px; color: var(--body); line-height: 1.5; }
.hero-card .sharelink { margin-top: 0; }
.hero-card .hint { font-size: 13px; color: var(--red); margin: 8px 0 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; background: var(--red); color: #fff; border: 1px solid var(--red);
  padding: 16px 32px; font-size: 12.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  cursor: pointer; text-decoration: none; border-radius: 0; font-family: inherit;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: #fff; }
.btn.small { padding: 10px 18px; font-size: 11px; }
.btn:disabled { opacity: .45; cursor: wait; }
.btn:disabled:hover { background: var(--red); border-color: var(--red); }
.btn.ghost:disabled:hover { background: transparent; color: var(--ink); border-color: var(--ink); }

/* ---------- ticker ---------- */
.ticker { background: var(--ink); color: #fff; overflow: hidden; white-space: nowrap; }
.ticker-in { display: inline-block; padding: 13px 0; animation: tick 30s linear infinite; will-change: transform; }
.ticker span { font-size: 11.5px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase; margin: 0 20px; }
.ticker .sep { color: var(--red); margin: 0; }
@keyframes tick { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker-in { animation: none; } }

/* ---------- sections ---------- */
.section { padding: 48px 0; border-bottom: 1px solid var(--line); }
.sec-head { margin-bottom: 28px; }
.sec-head h2 {
  font-size: clamp(26px, 3.5vw, 38px); letter-spacing: -.03em; line-height: 1.05;
  font-weight: 800; margin: 0; color: var(--ink); text-wrap: balance;
}

/* numbered steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--rule); }
.step { padding: 22px 22px 24px; border-right: 1px solid var(--rule); background: #fff; }
.step:last-child { border-right: 0; }
.step .n { font-size: 40px; font-weight: 200; letter-spacing: -.04em; line-height: 1; color: var(--ink); margin-bottom: 12px; }
.step .n em { font-style: normal; color: var(--red); }
.step h3 { margin: 0 0 8px; font-size: 17px; letter-spacing: -.015em; color: var(--ink); }
.step p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }

/* spec sheet */
.spec { border-top: 1px solid var(--rule); }
.spec-row {
  display: grid; grid-template-columns: 240px 1fr; gap: 24px;
  padding: 14px 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
.spec-row dt { font-size: 11.5px; text-transform: uppercase; letter-spacing: .18em; font-weight: 700; color: var(--ink); }
.spec-row dd { margin: 0; color: var(--body); font-size: 15.5px; }
.spec-row dd strong { color: var(--ink); }
code.inline { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85em;
  background: var(--soft); border: 1px solid var(--line); padding: 2px 7px; color: var(--ink); }

/* trust note */
.trust { border-left: 4px solid var(--red); padding: 6px 0 6px 24px; margin: 64px 0 8px; max-width: 760px; }
.trust p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.65; }
.trust strong { color: var(--ink); }
.trust a { color: var(--ink); text-underline-offset: 3px; }
.trust a:hover { color: var(--red); }

/* ---------- app cards / forms ---------- */
.card { border: 1px solid var(--rule); padding: 40px; margin: 40px 0; background: #fff; }
.card h2 { margin: 0 0 8px; font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -.03em; line-height: 1.05; color: var(--ink); font-weight: 800; }
.card .sub { color: var(--muted); margin: 0 0 24px; font-size: 15px; }
.field { margin: 22px 0; }
.field > label { display: block; font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .16em; margin-bottom: 10px; color: var(--ink); }
.field .hint { font-weight: 400; color: var(--muted); font-size: 13px; display: block; margin-top: 8px; text-transform: none; letter-spacing: 0; }
input[type=text], textarea, select {
  width: 100%; border: 1px solid var(--rule); border-radius: 0; padding: 13px 15px;
  font-size: 15px; font-family: inherit; background: #fff; color: var(--ink);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--red); outline-offset: 1px; }
textarea { min-height: 84px; resize: vertical; }
.radio-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.radio-card { border: 1px solid var(--rule); padding: 16px 18px; cursor: pointer; font-size: 14.5px; color: var(--ink); }
.radio-card input { margin-right: 10px; accent-color: var(--red); }
.radio-card:has(input:checked) { border-color: var(--red); box-shadow: inset 0 0 0 1px var(--red); }
.radio-card .hint { display: block; margin-top: 4px; }

/* file list */
.file-list { list-style: none; margin: 14px 0; padding: 0; border-top: 1px solid var(--rule); }
.file-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 15px;
}
.file-list li:hover { background: #fbfbfb; }
.file-list .fname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink); }
.file-list .fmeta { color: var(--muted); font-size: 12.5px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.file-list a { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: var(--red); text-decoration: none; white-space: nowrap; }
.file-list a:hover { text-decoration: underline; }

/* badges */
.badge {
  display: inline-block; font-size: 10.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  padding: 5px 11px; border: 1px solid var(--rule); color: var(--ink); background: #fff; white-space: nowrap;
}
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.wait { color: var(--warn); border-color: var(--warn); }
.badge.err { color: var(--red); border-color: var(--red); }
.badge.warn { color: var(--warn); border-color: var(--warn); }

/* segmented mode toggle */
.seg { display: inline-flex; border: 1px solid var(--rule); }
.seg-btn {
  appearance: none; border: 0; background: #fff; color: var(--ink);
  font: inherit; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: 12px 22px; cursor: pointer;
}
.seg-btn + .seg-btn { border-left: 1px solid var(--rule); }
.seg-btn.active { background: #111; color: #fff; }

/* folder tree */
.tree { border: 1px solid var(--rule); padding: 6px 18px 10px; max-height: 420px; overflow: auto; }
.tree ul { list-style: none; margin: 0; padding-left: 20px; }
.tree > ul.tree-root { padding-left: 0; }
.tree .tnode { padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.tree .tnode:last-child { border-bottom: 0; }
.tree .fname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink); }
.tree .fmeta { color: var(--muted); font-size: 12px; margin-left: 10px; font-variant-numeric: tabular-nums; }
.tree .badge { margin-left: 10px; }
.tree details > ul { border-left: 1px solid var(--rule); margin-top: 6px; }
.tree summary { cursor: pointer; list-style: none; display: flex; align-items: center; }
.tree summary::-webkit-details-marker { display: none; }
.tree summary::before { content: "▸"; color: var(--red); margin-right: 9px; font-size: 11px; }
.tree details[open] > summary::before { content: "▾"; }
.checkline { margin-top: 12px; font-size: 14.5px; }

/* progress */
.progress { height: 8px; background: var(--soft); border: 1px solid var(--line); margin: 16px 0; }
.progress > div { height: 100%; background: var(--red); width: 0%; transition: width .3s ease; }
.status-line { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }

/* share link box */
.sharelink { display: flex; gap: 0; margin-top: 14px; }
.sharelink input { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; border-right: 0; }
.sharelink .btn { flex-shrink: 0; }

/* dashboard rows */
.share-row {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  border-top: 1px solid var(--rule); padding: 20px 4px;
}
.share-row:last-of-type { border-bottom: 1px solid var(--rule); }
.share-row .t { font-weight: 700; color: var(--ink); font-size: 16px; letter-spacing: -.01em; }
.share-row .m { color: var(--muted); font-size: 13px; margin-top: 4px; }
.share-row .actions { display: flex; gap: 10px; align-items: center; flex-shrink: 0; }

/* alerts */
.alert { border: 1px solid var(--red); border-left: 4px solid var(--red); background: #fef2f3;
  color: #8f0f18; padding: 14px 18px; margin: 16px 0; font-size: 14.5px; }
.alert ul { margin: 8px 0 0; padding-left: 20px; }
.notice { border: 1px solid var(--line); border-left: 4px solid var(--ink); background: var(--soft);
  padding: 14px 18px; margin: 16px 0; font-size: 14.5px; color: var(--body); }
.notice a { color: var(--ink); font-weight: 700; }
ol.steps-list { margin: 14px 0; padding-left: 22px; color: var(--body); }
ol.steps-list li { margin: 10px 0; }
ol.steps-list a { color: var(--red); font-weight: 700; text-decoration: none; }
ol.steps-list a:hover { text-decoration: underline; }

.skeleton { color: var(--muted); padding: 40px 0; text-align: center; font-size: 13px; text-transform: uppercase; letter-spacing: .18em; }

/* prose (privacy) */
.prose h3 { font-size: 20px; letter-spacing: -.02em; color: var(--ink); margin: 32px 0 10px; }
.prose p, .prose li { color: var(--body); font-size: 15.5px; line-height: 1.7; }
.prose ul { padding-left: 22px; }
.prose li { margin: 8px 0; }
.prose a { color: var(--red); text-underline-offset: 3px; }

/* ---------- footer ---------- */
.footer { background: var(--ink); color: #fff; margin-top: 64px; padding: 40px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer .brand-name { color: #fff; }
.footer h4 { font-size: 11px; text-transform: uppercase; letter-spacing: .2em; color: #999; margin: 0 0 16px; font-weight: 700; }
.footer p { color: #bbb; font-size: 14px; line-height: 1.65; margin: 0; max-width: 340px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin: 10px 0; }
.footer a { color: #ddd; text-decoration: none; font-size: 14px; }
.footer a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.footer-base { border-top: 1px solid #333; padding-top: 24px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12px; color: #888; letter-spacing: .06em; }

@media (max-width: 760px) {
  .hero { padding: 64px 0 52px; }
  .nav { gap: 14px; }
  .nav a { font-size: 10.5px; letter-spacing: .1em; }
  .nav .who { display: none; }
  .step { border-right: 0; border-bottom: 1px solid var(--rule); }
  .step:last-child { border-bottom: 0; }
  .steps { grid-template-columns: 1fr; }
  .radio-row { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; gap: 6px; }
  .card { padding: 28px 22px; }
  .sharelink { flex-direction: column; }
  .sharelink input { border-right: 1px solid var(--rule); border-bottom: 0; }
  .hero-actions { grid-template-columns: 1fr; }
  .share-row { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav .who { display: none; }
  .nav { gap: 16px; }
}