/* FileFlux site — one stylesheet, no external requests (the host is plain shared hosting).
   Colours come from the app's own theme: brand purple #8B5CF6 over the deep band #4C1D95. */

:root {
  --brand: #8b5cf6;
  --band: #4c1d95;
  --bg: #ffffff;
  --surface: #f6f5fa;
  --text: #1b1b1f;
  --muted: #5b5b66;
  --line: #e3e1ea;
  --radius: 14px;
  --max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131318;
    --surface: #1c1c23;
    --text: #ececf1;
    --muted: #a3a3b0;
    --line: #2e2e38;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); }
img { max-width: 100%; height: auto; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---- header ---- */
.site-head {
  background: var(--band);
  color: #fff;
  padding: 14px 0;
}
.site-head .wrap { display: flex; align-items: center; gap: 14px; }
.site-head a { color: #fff; text-decoration: none; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 18px; }
.brand img { width: 28px; height: 28px; }
.site-head nav { margin-inline-start: auto; display: flex; gap: 20px; font-size: 15px; }
.site-head nav a:hover { text-decoration: underline; }

/* ---- language picker (no JavaScript: a <details> disclosure) ---- */
.langpick { position: relative; font-size: 15px; }
.langpick summary {
  list-style: none;
  cursor: pointer;
  padding: 4px 12px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px;
  white-space: nowrap;
}
.langpick summary::-webkit-details-marker { display: none; }
.langpick summary::after { content: " ▾"; opacity: .8; }
.langpick summary:hover { background: rgba(255, 255, 255, .12); }
.langpick summary:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.langpick-menu {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 8px);
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 2px 10px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .22);
}
.langpick-menu a { color: var(--text); padding: 4px 2px; white-space: nowrap; }
.langpick-menu a:hover { color: var(--brand); text-decoration: underline; }
.langpick-menu a[aria-current] { font-weight: 600; color: var(--brand); }

/* ---- hero ---- */
.hero { padding: 64px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero p.lead { font-size: clamp(17px, 2.2vw, 20px); color: var(--muted); max-width: 42em; margin: 0 auto 28px; }

.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.btn:hover { background: #7c4ef0; }
.btn.secondary { background: transparent; color: var(--text); border-color: var(--line); }
.btn.secondary:hover { background: var(--surface); }
.btn-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.note { color: var(--muted); font-size: 14px; margin-top: 14px; }

.shot {
  margin: 44px auto 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .14);
  display: block;
}

/* ---- sections ---- */
section { padding: 56px 0; }
section h2 { font-size: clamp(22px, 3vw, 30px); margin: 0 0 8px; letter-spacing: -0.01em; }
section .sub { color: var(--muted); margin: 0 0 28px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.alt { background: var(--surface); border-block: 1px solid var(--line); }

.split { display: grid; gap: 32px; grid-template-columns: 1fr 1fr; align-items: center; }
.split img { border: 1px solid var(--line); border-radius: var(--radius); }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; } }

ul.ticks { list-style: none; padding: 0; margin: 0; }
ul.ticks li { padding-inline-start: 26px; position: relative; margin-bottom: 10px; color: var(--muted); }
ul.ticks li::before {
  content: "✓";
  position: absolute;
  inset-inline-start: 0;
  color: var(--brand);
  font-weight: 700;
}

.centred { text-align: center; }
/* The incognito band: a short line of copy over a deliberately empty screenshot. */
.sub.narrow { max-width: 46em; margin-inline: auto; }
.shot.narrow { max-width: 820px; margin-top: 32px; }
.after-list { margin-top: 22px; }
.note.spaced { margin-top: 24px; }
.card-link { margin-top: 12px; }

/* ---- prose (privacy / support) ---- */
.prose { max-width: 46em; padding: 48px 0 64px; }
.prose h1 { font-size: clamp(26px, 4vw, 36px); margin: 0 0 6px; }
.prose h2 { font-size: 20px; margin: 34px 0 10px; }
.prose .updated { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.prose li { margin-bottom: 8px; }
.prose code {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 5px;
  font-size: 14px;
}

/* ---- footer ---- */
.site-foot {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
.site-foot .wrap { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.site-foot nav { margin-inline-start: auto; display: flex; gap: 18px; }

/* ---- narrow screens ---- */
@media (max-width: 700px) {
  .site-head .wrap { flex-wrap: wrap; }
  .site-head nav { order: 3; width: 100%; margin-inline-start: 0; gap: 16px; }
  .langpick-menu { grid-template-columns: repeat(2, minmax(104px, 1fr)); font-size: 14px; }
}