/* AppGlider website. Colour tokens follow docs/design.md (Blue accent). */
:root {
  color-scheme: light dark;
  --bg: #eef0f4;
  --surface: #ffffff;
  --surface2: #f5f6f9;
  --raised: #eceef3;
  --line: #dde0e7;
  --text: #1b1f27;
  --muted: #5d6573;
  --accent: #3563d8;
  --on-accent: #ffffff;
  --radius: 10px;
  --radius-small: 8px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "DejaVu Sans Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181e;
    --surface: #1c2028;
    --surface2: #232833;
    --raised: #2a303c;
    --line: #2f3542;
    --text: #e8eaef;
    --muted: #9aa1ae;
    --accent: #8fb3ff;
    --on-accent: #15181e;
  }
}

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

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
  -webkit-text-size-adjust: 100%;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

code, pre { font-family: var(--mono); font-size: 0.9em; }
code { background: var(--raised); padding: 0.1em 0.4em; border-radius: 6px; overflow-wrap: anywhere; }

h1, h2, h3 { line-height: 1.2; margin: 0; }
p { margin: 0 0 1em; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }

.sr-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--surface); padding: 8px 12px; border-radius: var(--radius-small); z-index: 10; }
.skip:focus { left: 8px; }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 5; background: var(--bg); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding: 10px 0; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 1.125rem; text-decoration: none;  }
.brand img { border-radius: 8px; }
.nav-links { margin-left: auto; display: flex; flex-wrap: wrap; gap: 4px 18px; order: 1; }
.nav-links a { color: var(--text); text-decoration: none; padding: 4px 0; }
.nav-links a:hover { color: var(--accent); }
.nav .btn { order: 2; }

@media (max-width: 760px) {
  .nav-links { order: 3; width: 100%; margin-left: 0; }
  .brand { margin-right: auto; }
  .nav .btn { order: 2; }
}

/* Buttons */
.btn { display: inline-block; font: inherit; font-weight: 600; text-align: center; text-decoration: none; padding: 10px 18px; border-radius: var(--radius-small); border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: var(--surface2); color: var(--text); border-color: var(--line); }
.btn-secondary:hover { background: var(--raised); }
.btn-small { padding: 6px 14px; }

/* Hero */
.hero { display: grid; gap: 40px; padding-block: 56px 32px; align-items: center; }
@media (min-width: 960px) {
  .hero { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); padding-block: 72px 48px; }
}
.hero h1 { font-size: clamp(2rem, 5vw, 2.75rem); letter-spacing: -0.01em; margin-bottom: 16px; }
.lead { font-size: 1.125rem; color: var(--muted); max-width: 34em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-block: 24px 12px; }

/* Screenshot switcher */
.window { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 8px 28px rgb(0 0 0 / 0.14); }
.window-bar { background: var(--surface2); border-bottom: 1px solid var(--line); padding: 8px 14px; font-size: 0.8125rem; color: var(--muted); text-align: center; }
.tabs { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px; background: var(--surface); border-bottom: 1px solid var(--line); }
.tabs button { font: inherit; font-size: 0.875rem; color: var(--muted); background: none; border: 1px solid transparent; border-radius: var(--radius-small); padding: 6px 12px; cursor: pointer; }
.tabs button:hover { color: var(--text); background: var(--surface2); }
.tabs button[aria-selected="true"] { background: var(--raised); color: var(--text); font-weight: 600; }
.panels img { width: 100%; }

/* Sections */
.section { padding-block: 48px; }
.section > h2 { font-size: 1.75rem; margin-bottom: 24px; }

.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { font-size: 1.0625rem; margin-bottom: 8px; }
.card p { margin: 0; color: var(--muted); font-size: 0.9375rem; }
.icon { fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 12px; }

/* Install steps */
.steps { list-style: none; counter-reset: step; margin: 0 0 24px; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.steps > li { counter-increment: step; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; min-width: 0; }
.steps > li::before { content: counter(step); display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 700; font-size: 0.875rem; margin-bottom: 12px; }
.steps h3 { font-size: 1.0625rem; margin-bottom: 8px; }
.steps p { color: var(--muted); font-size: 0.9375rem; }
.steps > li > :last-child { margin-bottom: 0; }

.code { position: relative; background: var(--surface2); border: 1px solid var(--line); border-radius: var(--radius-small); margin-bottom: 1em; max-width: 100%; }
.code pre { margin: 0; padding: 12px 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.code code { background: none; padding: 0; overflow-wrap: anywhere; white-space: inherit; }
.code .copy { position: absolute; top: 6px; right: 6px; font: inherit; font-size: 0.8125rem; color: var(--text); background: var(--raised); border: 1px solid var(--line); border-radius: 6px; padding: 3px 10px; cursor: pointer; }
.code .copy:hover { border-color: var(--accent); }
.code .copy[hidden] { display: none; }
.code:has(.copy:not([hidden])) pre { padding-right: 72px; }
.steps .code { margin-bottom: 12px; }

/* Questions */
.faq { display: grid; gap: 12px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 22px; }
.faq summary { cursor: pointer; font-weight: 600; padding: 16px 0; }
.faq summary::marker { color: var(--accent); }
.faq details[open] summary { margin-bottom: 4px; }
.faq details p { color: var(--muted); }

/* Footer */
.footer { border-top: 1px solid var(--line); margin-top: 32px; padding-block: 28px; color: var(--muted); font-size: 0.9375rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.footer p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 4px 20px; }

.notfound { padding-block: 72px; }
.notfound h1 { font-size: 2.25rem; margin-bottom: 12px; }

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