/* Fitzroy Manufacturing Ltd — single-page site
   Art direction: Swiss/industrial restraint. Graphite on paper, slate-teal accent.
   Display: Cabinet Grotesk. Body: Satoshi. */

:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --font-display: 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif;
  --font-body: 'Satoshi', system-ui, -apple-system, sans-serif;

  --shell: 70rem;
  --radius: 3px;
}

:root, [data-theme='light'] {
  --color-bg: #f6f5f2;
  --color-surface: #fffefc;
  --color-offset: #eceae5;
  --color-border: #d6d3cc;
  --color-divider: #e2dfd9;
  --color-text: #1b1d1e;
  --color-text-muted: #5f635f;
  --color-text-faint: #8b8f8b;
  --color-primary: #15505a;
  --color-primary-hover: #0e3b43;
}

[data-theme='dark'] {
  --color-bg: #101314;
  --color-surface: #171b1d;
  --color-offset: #1a1f21;
  --color-border: #2c3336;
  --color-divider: #262c2e;
  --color-text: #eeeeea;
  --color-text-muted: #a4aaa8;
  --color-text-faint: #7d8583;
  --color-primary: #74bcc3;
  --color-primary-hover: #9ad4da;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; line-height: 1.14; letter-spacing: -0.015em; }
h1 { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 700; }
p { margin: 0; }
a { color: var(--color-primary); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-primary-hover); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }

.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: var(--space-6); }

.skip {
  position: absolute; left: -9999px; top: var(--space-2);
  background: var(--color-surface); color: var(--color-text);
  padding: var(--space-2) var(--space-4); border: 1px solid var(--color-border); z-index: 50;
}
.skip:focus { left: var(--space-4); }

/* ---------- header ---------- */
.site-head {
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-bg);
}
.head-inner { display: flex; align-items: center; gap: var(--space-5); min-height: 4.25rem; }
.brand { display: flex; align-items: center; gap: var(--space-3); color: var(--color-text); text-decoration: none; }
.brand-mark { width: 24px; height: 24px; color: var(--color-primary); flex: none; }
.brand-name {
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm);
  letter-spacing: 0.01em;
}
.nav { margin-left: auto; display: flex; gap: var(--space-6); }
.nav a {
  font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none;
  padding-block: var(--space-2); border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--color-text); border-bottom-color: var(--color-primary); }

.icon-btn {
  display: grid; place-items: center; width: 2.25rem; height: 2.25rem;
  background: transparent; border: 1px solid var(--color-border); border-radius: var(--radius);
  color: var(--color-text-muted); cursor: pointer; flex: none;
}
.icon-btn:hover { color: var(--color-text); border-color: var(--color-text-faint); }
.icon-btn svg { width: 17px; height: 17px; }
.ico-moon { display: none; }
[data-theme='dark'] .ico-sun { display: none; }
[data-theme='dark'] .ico-moon { display: block; }

/* ---------- hero ---------- */
.hero-inner {
  padding-block: clamp(var(--space-16), 12vw, var(--space-32));
  max-width: 46rem;
}
.eyebrow {
  font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--color-text-faint); margin-bottom: var(--space-6);
}
.hero-inner h1 { max-width: 24ch; text-wrap: balance; }
.lede {
  margin-top: var(--space-6); max-width: 52ch;
  color: var(--color-text-muted);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: var(--space-10);
  font-size: var(--text-sm); font-weight: 500; text-decoration: none;
  padding: var(--space-3) var(--space-6); border-radius: var(--radius);
  border: 1px solid transparent; transition: background-color .18s ease;
}
.btn-primary { background: var(--color-primary); color: #fbfdfd; }
[data-theme='dark'] .btn-primary { color: #0b1214; }
.btn-primary:hover { background: var(--color-primary-hover); color: #fbfdfd; }
[data-theme='dark'] .btn-primary:hover { color: #0b1214; }

.rule-strip {
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--color-border) 0 1px, transparent 1px 10px);
  border-top: 1px solid var(--color-divider);
}

/* ---------- bands ---------- */
.band { padding-block: clamp(var(--space-12), 8vw, var(--space-24)); }

.section-title {
  font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700;
  max-width: 30ch;
}
.section-lede { margin-top: var(--space-4); max-width: 50ch; color: var(--color-text-muted); }

/* ---------- contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(var(--space-10), 6vw, var(--space-16)); align-items: start;
}
.contact-line { margin-top: var(--space-8); }
.big-link {
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 700;
  overflow-wrap: anywhere;
}
.addr-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: var(--space-6);
}
.addr-card h3 {
  font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--color-text-faint); font-family: var(--font-body); font-weight: 500;
}
.addr-card address { margin-top: var(--space-4); font-style: normal; font-size: var(--text-sm); line-height: 1.75; }
.addr-note { margin-top: var(--space-5); font-size: var(--text-xs); color: var(--color-text-muted); }

/* ---------- footer ---------- */
.site-foot {
  background: var(--color-offset);
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}
.foot-inner { display: grid; gap: var(--space-5); }
.foot-brand { display: flex; align-items: center; gap: var(--space-3); }
.foot-brand p { font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm); }
.foot-legal, .foot-privacy {
  font-size: var(--text-xs); color: var(--color-text-muted); max-width: 66ch; line-height: 1.75;
}
.foot-meta {
  display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center;
  font-size: var(--text-xs); color: var(--color-text-faint);
}

/* ---------- responsive ---------- */
@media (max-width: 60rem) {
  .contact-grid { grid-template-columns: 1fr; }
  .addr-card { max-width: 32rem; }
}