/* mars-alien.com -- shared styles.
   Palette taken from real Martian light: rust ground, butterscotch dust,
   and the blue of a Martian sunset (fine dust scatters blue light forward). */

:root {
  --regolith: #2b1610;   /* base background */
  --crust:    #3d2018;   /* raised surfaces */
  --ridge:    #5a3123;   /* borders, tracks */
  --dust:     #d9a25f;   /* butterscotch: primary accent */
  --dusk:     #86b6db;   /* martian sunset blue: links, focus, active */
  --sand:     #f2e3cd;   /* text */
  --sand-dim: #c4ab8f;   /* secondary text */

  --display: "Bricolage Grotesque", "Atkinson Hyperlegible", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, sans-serif;

  /* type scale: 16px base, 1.25 ratio */
  --s-1: 0.8rem;
  --s0: 1rem;
  --s1: 1.25rem;
  --s2: 1.563rem;
  --s3: 2.441rem;
  --s4: clamp(2.6rem, 6vw, 4.6rem);

  --gutter: clamp(16px, 4vw, 48px);
  --radius: 10px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--regolith);
  color: var(--sand);
  font-family: var(--body);
  font-size: var(--s0);
  line-height: 1.55;
}

a { color: var(--dusk); text-underline-offset: 0.18em; }
a:hover { color: var(--sand); }

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

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.015em;
}

.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- site header ---------- */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  padding-bottom: 22px;
}

.wordmark {
  font-family: var(--display);
  font-weight: 800;
  font-size: var(--s1);
  color: var(--sand);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.wordmark span { color: var(--dust); }

.site-nav { display: flex; gap: clamp(14px, 3vw, 28px); }
.site-nav a {
  color: var(--sand-dim);
  text-decoration: none;
  font-weight: 700;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--sand); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 2px solid var(--dust);
  background: var(--dust);
  color: var(--regolith);
  font: 700 var(--s0) var(--body);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--sand); border-color: var(--sand); color: var(--regolith); }

.btn-quiet {
  background: transparent;
  color: var(--sand);
  border-color: var(--ridge);
}
.btn-quiet:hover { background: var(--crust); border-color: var(--sand-dim); color: var(--sand); }

/* ---------- footer ---------- */
.site-foot {
  margin-top: 96px;
  padding-top: 28px;
  padding-bottom: 40px;
  border-top: 1px solid var(--ridge);
  color: var(--sand-dim);
  font-size: var(--s-1);
}

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