/* Darkslide website. Dark-first like the app (Theme.swift), light when the visitor's system asks for it.
   No web fonts from third parties: system faces plus the app's own DSEG date-stamp font, served from here. */

@font-face {
  font-family: "DSEG7";
  src: url("/assets/DSEG7Classic-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "DSEG14";
  src: url("/assets/DSEG14Classic-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

:root {
  --ground: #0B0B0C;
  --surface: #161618;
  --raised: #222226;
  --ink: #F2EDE4;
  --ink-dim: #9A958C;
  --rule: #2A2A2E;
  --accent: #E8C170;
  --accent-ink: #E8C170;
  --stamp: #F29A38;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue",
          "Apple SD Gothic Neo", "Malgun Gothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
          "Noto Sans", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --ground: #F7F6F3;
    --surface: #FFFFFF;
    --raised: #EFEDE8;
    --ink: #17161A;
    --ink-dim: #5E5A53;
    --rule: #E1DED7;
    --accent: #C9982F;
    --accent-ink: #8A5F0B;
    --stamp: #D9711C;
    color-scheme: light;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  padding-inline: max(16px, env(safe-area-inset-left, 0px));
  padding-block: env(safe-area-inset-top, 0px) env(safe-area-inset-bottom, 0px);
}

a { color: var(--accent-ink); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

.top, main, footer { max-width: 760px; margin-inline: auto; }

/* Header */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 20px;
  border-bottom: 1px solid var(--rule);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand img { border-radius: 7px; }
.top nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.top nav a { color: var(--ink-dim); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }
.top nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }

main { padding-block: 40px 56px; }

/* Home */
.hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--rule);
}
.hero img { width: 112px; height: 112px; border-radius: 25px; box-shadow: 0 8px 28px rgb(0 0 0 / 0.35); }
.hero h1 { font-size: 44px; line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 8px; }
.hero p { margin: 0; color: var(--ink-dim); font-size: 19px; max-width: 34ch; text-wrap: balance; }
.hero .cta { margin-top: 18px; display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.button {
  display: inline-block;
  background: var(--accent);
  color: #1A1407;
  text-decoration: none;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 999px;
}
.button:hover { filter: brightness(1.06); }

/* The app's date stamp, printed in the corner of the page the way it lands on a photo. */
.stamp {
  font-family: "DSEG7", var(--mono);
  font-weight: 700;
  color: var(--stamp);
  letter-spacing: 0.06em;
  font-size: 15px;
  text-shadow: 0 0 6px color-mix(in srgb, var(--stamp) 55%, transparent);
  white-space: nowrap;
}
.stamp .tick { font-family: "DSEG14", var(--mono); }

.features {
  list-style: none;
  padding: 0;
  margin: 36px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 32px;
}
.features h3 { margin: 0 0 4px; font-size: 16px; }
.features p { margin: 0; color: var(--ink-dim); font-size: 15px; }

/* Documents */
.doc-head { padding-bottom: 24px; border-bottom: 1px solid var(--rule); margin-bottom: 8px; }
.doc-head h1 { font-size: 36px; line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 10px; text-wrap: balance; }
.meta { color: var(--ink-dim); font-size: 14px; margin: 0; display: flex; gap: 12px; flex-wrap: wrap; align-items: baseline; }

h2 { font-size: 21px; line-height: 1.3; margin: 40px 0 10px; letter-spacing: -0.01em; text-wrap: balance; scroll-margin-top: 16px; }
h3 { font-size: 17px; margin: 24px 0 6px; }
p, li { max-width: 68ch; }
main ul, main ol { padding-left: 1.3em; }
li { margin-block: 4px; }
strong { font-weight: 600; }

.summary {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 18px 22px;
  margin: 28px 0 8px;
}
.summary h2 { margin-top: 0; font-size: 17px; }
.summary ul { margin: 0; }

.table-wrap { overflow-x: auto; margin: 12px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 520px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--rule); }
th { font-weight: 600; color: var(--ink-dim); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; }
td:first-child { font-weight: 600; white-space: nowrap; }

.contact-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 18px 22px;
  margin-top: 12px;
}
.contact-card p { margin: 2px 0; }

/* Support FAQ */
.faq { margin-top: 12px; border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  cursor: pointer;
  padding: 14px 28px 14px 0;
  font-weight: 600;
  list-style: none;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 12px;
  color: var(--accent-ink);
  font-weight: 400;
  font-size: 20px;
}
.faq details[open] summary::after { content: "−"; }
.faq details > :not(summary) { margin: 0 0 16px; color: var(--ink-dim); }
.path { font-weight: 600; color: var(--ink); }

/* Footer */
footer {
  border-top: 1px solid var(--rule);
  padding-block: 24px 40px;
  color: var(--ink-dim);
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
footer p { margin: 0; }
footer a { color: var(--ink-dim); }
.langs { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.langs a { text-decoration: none; }
.langs a[aria-current="true"] { color: var(--ink); font-weight: 600; }

@media (max-width: 600px) {
  main { padding-block: 28px 40px; }
  .hero { grid-template-columns: 1fr; gap: 16px; }
  .hero img { width: 88px; height: 88px; border-radius: 20px; }
  .hero h1 { font-size: 36px; }
  .features { grid-template-columns: 1fr; }
  .doc-head h1 { font-size: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}