/* Developer website – system fonts only (no third-party requests). */
:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --border: rgba(0, 0, 0, 0.09);
  --accent: #0a66d8;
  --accent-alt: #4a9bff;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --surface: #1c1c1f;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 2px; }
@media (prefers-color-scheme: dark) { a { color: var(--accent-alt); } }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 0.3em; }
img { max-width: 100%; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 22px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--surface); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.lead { font-size: 1.2rem; color: var(--muted); margin: 0 0 1em; }
.muted { color: var(--muted); font-size: 0.92rem; }
.section-title { font-size: 1.6rem; margin: 2.2em 0 0.8em; }

/* Header & footer */
.site-header { border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: saturate(180%) blur(16px); position: sticky; top: 0; z-index: 5; }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.brand { font-weight: 650; color: var(--text); text-decoration: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lang { display: flex; gap: 12px; font-size: 0.9rem; }
.lang a { color: var(--muted); text-decoration: none; }
.lang a:hover { color: var(--text); }
.lang [aria-current] { font-weight: 600; }
.site-footer { margin-top: 80px; padding: 32px 0 48px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.88rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 12px; }
.footer-links a { color: var(--text); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.fine { font-size: 0.78rem; max-width: 70ch; }

/* Home */
.hero { padding: 72px 0 8px; }
.hero .lead { max-width: 40ch; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; }
.card-main { display: flex; gap: 16px; padding: 22px; color: inherit; text-decoration: none; flex: 1; }
.card-main:hover h3 { color: var(--accent); }
.card h3 { margin: 2px 0 4px; font-size: 1.25rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card .platforms { margin-top: 8px; font-size: 0.8rem; }
.card-links { display: flex; border-top: 1px solid var(--border); }
.card-links a { flex: 1; text-align: center; padding: 11px 6px; font-size: 0.88rem; text-decoration: none; }
.card-links a + a { border-left: 1px solid var(--border); }
.card-links a:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }

/* App icon */
.app-icon { border-radius: 22.5%; flex-shrink: 0; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15); }
.icon-fallback { display: inline-grid; place-items: center; color: #fff; font-weight: 700; font-size: 2rem; background: linear-gradient(135deg, var(--accent-alt), var(--accent)); }

/* App pages */
.app-hero { padding: 48px 0 0; background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent); border-bottom: 1px solid var(--border); margin-bottom: 32px; }
.app-hero.big { padding-top: 72px; }
.app-hero-row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.app-hero h1 { margin-bottom: 0.15em; }
.app-hero:not(.big) h1 { font-size: clamp(1.6rem, 4vw, 2.3rem); }
.eyebrow { margin: 0 0 4px; font-weight: 600; }
.eyebrow a { text-decoration: none; }
.app-nav { display: flex; gap: 6px; margin-top: 32px; overflow-x: auto; }
.app-nav a { padding: 10px 14px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.app-nav a:hover { color: var(--text); }
.app-nav a[aria-current] { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

.store-button, .button { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 12px; font-weight: 600; text-decoration: none; }
.store-button { background: #000; color: #fff !important; margin-top: 6px; }
.store-button.disabled { background: transparent; color: var(--muted) !important; border: 1px dashed var(--border); font-weight: 500; }
@media (prefers-color-scheme: dark) { .store-button { background: #fff; color: #000 !important; } }
.button { background: linear-gradient(135deg, var(--accent-alt), var(--accent)); color: #fff !important; }
.button:hover, .store-button:hover { filter: brightness(1.08); }

.features { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr)); gap: 18px; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.feature h3 { margin: 10px 0 6px; font-size: 1.1rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.feature-icon { font-size: 1.8rem; }

.privacy-box { margin-top: 40px; padding: 26px 28px; border-radius: var(--radius); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent); }
.privacy-box h2 { margin-top: 0; font-size: 1.35rem; }
.privacy-box ul { padding-left: 1.2em; }
.privacy-box li { margin: 6px 0; }

.facts { display: grid; grid-template-columns: max-content 1fr; gap: 10px 28px; margin-top: 40px; padding: 24px 0; border-top: 1px solid var(--border); }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
@media (max-width: 600px) { .facts { grid-template-columns: 1fr; gap: 2px; } .facts dd { margin-bottom: 12px; } }

.contact-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.contact-box .lead { color: var(--text); }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 0 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; }
.faq details p { margin: 0 0 16px; color: var(--muted); }

/* Long-form text */
.prose > * { max-width: 760px; }
.prose h2 { font-size: 1.35rem; margin: 1.8em 0 0.5em; }
.prose li { margin: 0.35em 0; }
.page { padding-top: 56px; }

.chooser { padding: 18vh 22px; text-align: center; }
.chooser ul { list-style: none; padding: 0; display: flex; gap: 24px; justify-content: center; font-size: 1.2rem; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .app-hero-row { gap: 18px; }
  .app-hero .app-icon { width: 80px; height: 80px; }
}