/* MapSmith marketing site. One stylesheet, no JavaScript, system fonts only. */

:root {
  --bg: #121417;
  --bg-raised: #191c21;
  --line: #2a2e35;
  --line-soft: #1f2328;
  --text: #f3efe9;
  --muted: #aba49a;
  --accent: #d98a4b;
  --accent-hover: #e49a5f;
  --on-accent: #121417;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --gutter: 16px;
  --measure: 36rem;
  --max: 1080px;
  --radius: 14px;
}

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

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 100%;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: auto;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-size: 1.0625rem;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { color: var(--accent-hover); }

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

h1, h2, h3 {
  margin: 0;
  color: var(--text);
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.12;
  text-wrap: balance;
}
h1 { font-size: clamp(2.375rem, 7.5vw, 4.25rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.75rem, 4.2vw, 2.5rem); }
h3 { font-size: 1.25rem; line-height: 1.3; }
p  { margin: 0; }
p + p { margin-top: 1em; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
@media (min-width: 640px) { :root { --gutter: 32px; } }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--accent);
  color: var(--on-accent);
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line-soft);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding-block: 12px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}
.brand svg { width: 26px; height: 26px; flex: none; }
.site-nav ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: clamp(14px, 3vw, 28px);
}
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9375rem;
  padding: 6px 0;
}
.site-nav a:hover { color: var(--text); }

main { flex: 1; }

/* Hero */
.hero { padding-block: clamp(64px, 12vw, 136px) clamp(56px, 9vw, 112px); }
.eyebrow {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.hero h1 { max-width: 14ch; }
.hero .sub {
  margin-top: 24px;
  max-width: var(--measure);
  font-size: clamp(1.1875rem, 2.4vw, 1.5rem);
  line-height: 1.4;
}
.hero .body {
  margin-top: 16px;
  max-width: var(--measure);
  color: var(--muted);
}

/* Form */
.signup { margin-top: 36px; max-width: 560px; }
.signup label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
}
.signup-row { display: flex; flex-wrap: wrap; gap: 10px; }
.signup input[type="email"] {
  flex: 1 1 240px;
  min-width: 0;
  min-height: 52px;
  padding: 12px 16px;
  font: inherit;
  font-size: 1.0625rem;
  color: var(--text);
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 10px;
}
.signup input[type="email"]::placeholder { color: #938c82; }
.signup input[type="email"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  border-color: var(--accent);
}
.btn {
  flex: 0 0 auto;
  min-height: 52px;
  padding: 12px 22px;
  font: inherit;
  font-size: 1.0625rem;
  font-weight: 650;
  color: var(--on-accent);
  background: var(--accent);
  border: 0;
  border-radius: 10px;
  cursor: pointer;
}
.btn:hover { background: var(--accent-hover); }
.signup-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9375rem;
}

/* Sections */
.section {
  border-top: 1px solid var(--line-soft);
  padding-block: clamp(64px, 10vw, 120px);
}
.section-head { max-width: 640px; }
.section .lead {
  margin-top: 16px;
  color: var(--muted);
  font-size: 1.125rem;
}

/* Previews */
.previews { margin-top: 40px; }
.preview-tabs { display: none; }
.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 32px);
}
.preview { margin: 0; }
.preview img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-raised);
}
.preview figcaption {
  margin-top: 14px;
  font-weight: 600;
  font-size: 1rem;
}
.preview figcaption span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-weight: 400;
  font-size: 0.9375rem;
}
.preview-note {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: var(--measure);
}

@media (max-width: 759px) {
  .preview-grid { grid-template-columns: 1fr; gap: 32px; }
  .preview { max-width: 340px; margin-inline: auto; width: 100%; }

  /* CSS-only tab switcher. Browsers without :has() get the stacked fallback. */
  @supports selector(:has(*)) {
    .preview-tabs {
      display: flex;
      gap: 6px;
      padding: 4px;
      margin-bottom: 20px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: var(--bg-raised);
    }
    .preview-tabs input { position: absolute; opacity: 0; width: 1px; height: 1px; pointer-events: none; }
    .preview-tabs label {
      flex: 1 1 0;
      text-align: center;
      padding: 10px 4px;
      border-radius: 9px;
      font-size: 0.875rem;
      white-space: nowrap;
      font-weight: 600;
      color: var(--muted);
      cursor: pointer;
    }
    .preview-tabs input:checked + label { background: var(--line); color: var(--text); }
    .preview-tabs input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }
    .previews { position: relative; }
    /* Inactive panels are clipped, not display:none, so their lazy images still fetch once the section is near the viewport. */
    .previews:has(#tab-daylight:checked) .preview:not(#preview-daylight),
    .previews:has(#tab-neon:checked)     .preview:not(#preview-neon),
    .previews:has(#tab-western:checked)  .preview:not(#preview-western) {
      position: absolute;
      top: 0; left: 0;
      width: 1px; height: 1px;
      overflow: hidden;
      clip-path: inset(50%);
      visibility: hidden;
      pointer-events: none;
    }
  }
}

/* How it works */
.how-grid {
  margin-top: 40px;
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
  max-width: 640px;
}
.card {
  padding: 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--bg-raised);
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); }
.section-link { margin-top: 36px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding-block: 48px 40px;
  color: var(--muted);
  font-size: 0.9375rem;
}
.site-footer .tag {
  color: var(--text);
  font-weight: 650;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}
.site-footer .soon { margin-top: 6px; }
.site-footer .links {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
}
.site-footer .links a { color: var(--muted); }
.site-footer .links a:hover { color: var(--text); }
.site-footer .dot { color: var(--line); }
.site-footer .legal { margin-top: 16px; font-size: 0.8125rem; }

/* Plain pages: privacy, support, thanks */
.doc { padding-block: clamp(48px, 8vw, 96px); }
.doc .wrap { max-width: 720px; }
.doc h1 { font-size: clamp(2rem, 5vw, 3rem); }
.doc .meta { margin-top: 16px; color: var(--muted); }
.doc h2 { font-size: 1.375rem; margin-top: 40px; }
.doc h3 { font-size: 1.125rem; margin-top: 28px; }
.doc h2 + p, .doc h3 + p, .doc h2 + ul { margin-top: 12px; }
.doc p + ul { margin-top: 12px; }
.doc ul { margin: 0; padding-left: 1.25em; }
.doc li + li { margin-top: 6px; }
.doc .note {
  margin-top: 40px;
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  background: var(--bg-raised);
  color: var(--muted);
  border-radius: 0 10px 10px 0;
}
.doc .status {
  display: inline-block;
  margin-top: 20px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
  font-size: 0.9375rem;
}
.doc .page-links { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line-soft); }
.doc .page-links a + a { margin-left: 20px; }

.thanks { text-align: left; padding-block: clamp(80px, 14vw, 160px); }

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