/* Mike — the website's design system.
   Black, white and grey, like the app: one neutral ground, one ink, and a
   single copper accent kept for the nib and the smallest details. Headlines
   are set in Source Serif 4 (Mike's own face); everything else in a clean
   sans. No glows, gradients or textures -- the product is the decoration. */

:root {
  --ground: #fafafa;
  --raised: #f4f4f5;
  --sunk: #efeff0;
  --hairline: #e6e6e8;
  --ink: #0b0b0c;
  --ink-soft: #52525b;
  --ink-mute: #85858d;
  --ink-faint: #d4d4d8;
  --surface: #ffffff;
  --accent: #a8683a;
  --accent-ink: #ffffff;
  --tile-top: #33353b;
  --tile-bottom: #141517;
  --good: #3f9b5a;
  --stop: #d14b3a;
  --nib: #c07a45;
  --collar: #6e3b18;
  --shadow-sm: 0 1px 2px rgba(10, 10, 12, 0.05);
  --shadow: 0 1px 2px rgba(10, 10, 12, 0.04), 0 8px 24px rgba(10, 10, 12, 0.06);
  --shadow-lg: 0 1px 3px rgba(10, 10, 12, 0.05), 0 24px 64px rgba(10, 10, 12, 0.10);

  --serif: "Source Serif 4", "Source Serif Pro", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;

  --max: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 18px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0a0a0b;
    --raised: #131315;
    --sunk: #070708;
    --hairline: #232326;
    --ink: #f4f4f5;
    --ink-soft: #a9a9b1;
    --ink-mute: #74747c;
    --ink-faint: #34343a;
    --surface: #111113;
    --accent: #c98b56;
    --accent-ink: #0b0b0c;
    --good: #5fb877;
    --stop: #e06a54;
    --nib: #d39a64;
    --collar: #7a4520;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 1px 3px rgba(0, 0, 0, 0.4), 0 24px 64px rgba(0, 0, 0, 0.55);
    color-scheme: dark;
  }
}

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

/* Nothing may widen the page: on a phone that makes it slide sideways and zoom out. */
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: clip; }
body { overflow-x: clip; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; }
code, kbd { font-family: var(--mono); font-size: 0.86em; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 6px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

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

/* anchors land below the sticky nav */
[id] { scroll-margin-top: 72px; }

/* ── the mark ── */
.nibmark { width: 22px; height: 22px; flex: none; }
.nibmark--lg { width: 44px; height: 44px; }

.tile {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  display: grid; place-items: center;
  background: var(--raised); border: 1px solid var(--hairline);
}
.tile .nibmark { width: 28px; height: 28px; }

/* ── buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 500 15px/1 var(--sans);
  letter-spacing: -0.005em;
  text-decoration: none;
  border-radius: 999px;
  padding: 13px 22px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
}
.btn:active { transform: translateY(1px); }
.btn--ink, .btn--accent { background: var(--ink); color: var(--ground); }
.btn--ink:hover, .btn--accent:hover { opacity: 0.86; }
/* the one copper button: trying Mike, right now, in the browser */
.btn--try { background: var(--accent); color: var(--accent-ink); box-shadow: 0 1px 2px rgba(0,0,0,0.08), 0 6px 18px color-mix(in srgb, var(--accent) 28%, transparent); }
.btn--try:hover { filter: brightness(1.06); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--hairline); }
.btn--ghost:hover { border-color: var(--ink-faint); background: var(--raised); }
.btn--light { background: var(--surface); color: var(--ink); border-color: var(--hairline); }
.btn--light:hover { background: var(--raised); }
.btn--sm { font-size: 14px; padding: 9px 16px; }
.btn svg { width: 16px; height: 16px; }

.kbd {
  display: inline-block;
  font: 500 12px/1 var(--sans);
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 4px 7px;
  vertical-align: 1px;
}

/* ── navigation ── */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--ground) 80%, transparent);
  -webkit-backdrop-filter: saturate(1.2) blur(16px);
  backdrop-filter: saturate(1.2) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.is-stuck { border-bottom-color: var(--hairline); }
.nav__inner {
  max-width: var(--max); margin: 0 auto;
  padding: 12px var(--gutter);
  padding-top: calc(12px + env(safe-area-inset-top));
  display: flex; align-items: center; gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; }
.brand__name { font: 600 19px/1 var(--serif); letter-spacing: -0.01em; }
.nav__links { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.nav__links a:not(.btn) { text-decoration: none; color: var(--ink-soft); font-size: 14px; transition: color 0.15s ease; }
.nav__links a:not(.btn):hover, .nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a.nav__try {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 13px; border-radius: 999px; border: 1px solid var(--hairline);
  color: var(--ink); font-weight: 500; background: var(--surface);
}
.nav__links a.nav__try:hover { border-color: var(--ink-faint); }

@media (max-width: 760px) {
  .nav__inner { gap: 14px; }
  .nav__links { gap: 16px; }
  .nav__links .hide-sm { display: none; }
}

/* ── the small "live" dot (the preview is running) ── */
.ask__live {
  width: 7px; height: 7px; border-radius: 50%; flex: none;
  background: var(--good);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--good) 18%, transparent);
}

/* ── footer ── */
.footer { border-top: 1px solid var(--hairline); margin-top: 0; }
.footer__inner {
  max-width: var(--max); margin: 0 auto;
  padding: 48px var(--gutter) 36px;
  display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px;
}
.footer__brand p { color: var(--ink-mute); margin: 12px 0 0; max-width: 300px; font-size: 14px; }
.footer__col { display: flex; flex-direction: column; gap: 9px; font-size: 14px; }
.footer__col h4 { margin: 0 0 4px; font-size: 12px; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-mute); }
.footer__col a { color: var(--ink-soft); text-decoration: none; }
.footer__col a:hover { color: var(--ink); }
.footer__legal {
  max-width: var(--max); margin: 0 auto; padding: 18px var(--gutter) calc(24px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--hairline);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--ink-mute); font-size: 13px;
}
.footer__credit {
  max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter) calc(28px + env(safe-area-inset-bottom));
  color: var(--ink-mute); font-size: 13px; text-align: center;
}
@media (max-width: 760px) {
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

/* ── reveal on scroll ── */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}