/* Claude Office download page: the app's comic look, with thin ink lines and paper grain. */
:root {
  --paper: #eadcbd;
  --paper-2: #f6ecd6;
  --panel: #fffaf0;
  --text: #211a13;
  --ink: #211a13;
  --muted: #6b5f4e;
  --accent: #e2774f;
  --accent-ink: #1c140c;
  --yellow: #ffb52e;
  --teal: #3fb3b8;
  --shadow: 5px 5px 0 var(--ink);
  --grain: 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='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .13 0 0 0 0 .1 0 0 0 0 .07 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --head: "Bahnschrift SemiBold Condensed", "Bahnschrift", "Arial Narrow", "Segoe UI", sans-serif;
  --body: "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1c1b18;
    --paper-2: #26241f;
    --panel: #2c2a24;
    --text: #efe6d3;
    --ink: #0b0907;
    --muted: #b3a891;
    --shadow: 5px 5px 0 #000;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper) var(--grain);
  color: var(--text);
  font: 17px/1.55 var(--body);
}
a { color: inherit; }
img { display: block; }
.muted { color: var(--muted); }

h1, h2, h3 { font-family: var(--head); letter-spacing: .01em; line-height: 1.05; margin: 0 0 .4em; }
h2 { font-size: clamp(30px, 4vw, 42px); text-transform: uppercase; }
h3 { font-size: 22px; }

.panel {
  background: var(--panel);
  border: 2.5px solid var(--ink);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px; border: 2.5px solid var(--ink); border-radius: 10px;
  background: var(--yellow); color: var(--accent-ink); text-decoration: none;
  font: 700 18px/1 var(--head); text-transform: uppercase; letter-spacing: .03em;
  box-shadow: 4px 4px 0 var(--ink); transition: transform .08s, box-shadow .08s;
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); }
.btn:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--ink); }
.btn:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.btn.big { padding: 16px 28px; font-size: 22px; }
.btn.small { padding: 8px 14px; font-size: 15px; box-shadow: 3px 3px 0 var(--ink); }
.btn svg { width: 24px; height: 24px; }

/* ---------- header ---------- */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px;
  padding: 10px max(16px, calc((100vw - 1180px) / 2));
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 2.5px solid var(--ink);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 22px var(--head); text-transform: uppercase; }
.top nav { display: flex; gap: 20px; margin-left: auto; }
.top nav a { text-decoration: none; font-weight: 600; }
.top nav a:hover { text-decoration: underline; text-decoration-thickness: 2px; }

main { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
section { margin: 0 0 88px; scroll-margin-top: 80px; }

/* ---------- hero ---------- */
.hero { padding-top: 56px; display: grid; gap: 40px; }
.kicker { margin: 0 0 10px; font: 700 15px var(--head); text-transform: uppercase; letter-spacing: .12em; color: var(--accent); }
.hero h1 { font-size: clamp(44px, 7vw, 86px); text-transform: uppercase; max-width: 12ch; }
.hl { background: linear-gradient(transparent 58%, var(--yellow) 58% 92%, transparent 92%); padding: 0 .08em; }
@media (prefers-color-scheme: dark) { .hl { background: none; color: var(--yellow); } }
.lead { font-size: 20px; max-width: 46ch; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; }
.meta { margin: 0; color: var(--muted); font-size: 15px; }
.hero-text { max-width: 760px; }

.demo { margin: 0; overflow: hidden; padding: 0; }
.demo canvas { display: block; width: 100%; height: clamp(360px, 52vw, 560px); cursor: grab; }

/* Wide screens: text and download on the left, the live office on the right, both above the fold. */
@media (min-width: 1100px) {
  .hero { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: center; padding-top: 48px; min-height: calc(100vh - 70px); }
  .hero h1 { font-size: clamp(48px, 4.8vw, 68px); }
  .lead { font-size: 19px; }
  .demo canvas { height: min(560px, calc(100vh - 220px)); min-height: 420px; }
}
.demo canvas.dragging { cursor: grabbing; }
.demo canvas.pointing { cursor: pointer; }
.demo figcaption { padding: 10px 16px; border-top: 2.5px solid var(--ink); font-size: 14px; color: var(--muted); background: var(--paper-2); }

/* ---------- features ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { padding: 22px 22px 18px; }
.card svg { width: 48px; height: 48px; margin-bottom: 8px; }
.card svg * { stroke: var(--ink); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.card svg path:not([fill]), .card svg rect:not([fill]) { fill: none; }
.card p { margin: 0; }
.card:nth-child(3n + 1) { transform: rotate(-.4deg); }
.card:nth-child(3n + 2) { transform: rotate(.3deg); }

/* ---------- privacy ---------- */
.private { padding: 30px 34px; background: var(--teal); color: #102a2b; }
.private h2 { color: #0b1d1e; }
.private ul { margin: 0; padding-left: 1.2em; display: grid; gap: 10px; font-size: 18px; }
@media (prefers-color-scheme: dark) { .private { background: #1f4f51; color: #e6f4f4; } .private h2 { color: #fff; } }

/* ---------- install ---------- */
.steps { list-style: none; margin: 0 0 24px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.steps li { position: relative; padding: 30px 22px 20px; }
.steps p { margin: 0; }
.num {
  position: absolute; top: -18px; left: 18px; width: 38px; height: 38px; display: grid; place-items: center;
  background: var(--accent); color: #fff; border: 2.5px solid var(--ink); border-radius: 50%;
  font: 700 20px var(--head); box-shadow: 3px 3px 0 var(--ink);
}
.req { font-size: 15.5px; }
.req p { margin: 0 0 8px; }
details summary { cursor: pointer; font-weight: 600; }
code { font-family: Consolas, "Cascadia Mono", monospace; font-size: 14px; background: var(--paper-2); border: 1.5px solid var(--ink); border-radius: 5px; padding: 1px 6px; }
.hash { display: block; word-break: break-all; padding: 8px 10px; }

/* ---------- faq ---------- */
.faq details { padding: 14px 20px; margin-bottom: 14px; box-shadow: 3px 3px 0 var(--ink); }
.faq summary { font: 700 20px var(--head); }
.faq p { margin: 10px 0 0; }

footer { border-top: 2.5px solid var(--ink); padding: 26px max(16px, calc((100vw - 1180px) / 2)); font-size: 14px; }
footer p { margin: 0 0 6px; }

/* ---------- small screens ---------- */
@media (max-width: 900px) {
  .grid, .steps { grid-template-columns: 1fr; }
  .steps { gap: 30px; }
}
@media (max-width: 640px) {
  .top nav { display: none; }
  .top .btn { margin-left: auto; }
  .hero { padding-top: 32px; }
  .private { padding: 22px; }
  .card:nth-child(n) { transform: none; }
  .demo canvas { pointer-events: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}