/* ==========================================================================
   Redland Air & Mechanical, portfolio demo (Storefront Digital)
   Light steel paper, safety-orange accent, Big Shoulders Display with
   IBM Plex. Numbered process, spec-sheet services, a service-area diagram,
   one pull-quote. Different from Onyx (dark paper, brass, photo-led).
   ========================================================================== */

:root {
  --paper:      oklch(97% 0.006 240);
  --paper-2:    oklch(94% 0.008 240);
  --paper-3:    oklch(90% 0.010 240);
  --line:       oklch(20% 0.012 240 / 0.14);
  --line-strong:oklch(20% 0.012 240 / 0.30);

  --ink:        oklch(20% 0.012 240);
  --ink-dim:    oklch(20% 0.012 240 / 0.66);
  --ink-faint:  oklch(20% 0.012 240 / 0.46);

  --accent:     oklch(62% 0.19 45);
  --accent-ink: oklch(15% 0.02 45);

  --dark:       oklch(22% 0.014 240);
  --dark-2:     oklch(28% 0.016 240);
  --on-dark:    oklch(96% 0.006 240);
  --on-dark-dim:oklch(96% 0.006 240 / 0.68);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
html { overflow-x: clip; }

.display {
  font-family: 'Big Shoulders Display', 'Arial Narrow', sans-serif;
  text-transform: uppercase;
}
.mono { font-family: 'IBM Plex Mono', ui-monospace, monospace; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- demo notice ---------- */
.demo-notice {
  background: var(--dark);
  color: var(--on-dark-dim);
  border-bottom: 1px solid var(--line-strong);
  padding: 9px 0;
  font-size: 12.5px;
  text-align: center;
}
.demo-notice a { color: var(--accent); font-weight: 600; }
.demo-notice a:hover { text-decoration: underline; }
.demo-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 7px;
  margin-right: 8px;
  border: 1px solid currentColor;
  border-radius: 3px;
  white-space: nowrap;
  vertical-align: 1px;
  color: var(--on-dark);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: 20px;
}
.nav-logo {
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 0.01em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.nav-logo .dot { color: var(--accent); }
.nav-phone {
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  display: none;
}
.nav-links {
  display: flex;
  gap: 26px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-dim);
}
.nav-links a:hover { color: var(--ink); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 13.5px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: transform 0.15s var(--ease-out), background-color 0.15s var(--ease-out);
}
.btn:hover { transform: translateY(-1px); }
.btn-solid { background: var(--accent); color: var(--accent-ink); }
.btn-solid:hover { background: oklch(58% 0.19 45); }
.btn-outline { border: 2px solid var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }
.btn-ghost { border: 2px solid var(--on-dark-dim); color: var(--on-dark); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.nav-links a:focus-visible, footer a:focus-visible, .demo-notice a:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.nav-panel-cta,
.nav-panel-only { display: none; }
.nav-toggle { color: var(--ink); }

/* ---------- hero (diagram + numeral led, not photographic) ---------- */
.hero { padding: 56px 0 64px; border-bottom: 1px solid var(--line); }
.hero .wrap {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: end;
}
.hero h1 {
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  font-weight: 700;
  font-size: 58px;
  line-height: 0.98;
  letter-spacing: -0.005em;
  margin: 0 0 22px;
}
.hero h1 .accent { color: var(--accent); }
.hero .lead {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-dim);
  max-width: 480px;
  margin: 0 0 30px;
}
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-readout {
  border: 2px solid var(--ink);
  background: var(--dark);
  color: var(--on-dark);
  padding: 28px 26px;
  border-radius: 2px;
}
.readout-label {
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--on-dark-dim);
  margin-bottom: 10px;
}
.readout-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 56px;
  font-weight: 600;
  line-height: 1;
  color: var(--accent);
}
.readout-sub {
  font-size: 13.5px;
  color: var(--on-dark-dim);
  margin-top: 10px;
  line-height: 1.5;
}

/* ---------- trust strip ---------- */
.trust-strip {
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
  padding: 14px 0;
}
.trust-strip .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  justify-content: center;
}
.trust-strip span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
}
.trust-strip span:not(:last-child)::after {
  content: '/';
  color: var(--accent);
  margin: 0 16px;
}

/* ---------- narrative workflow ---------- */
.workflow { padding: 90px 0; }
.section-head { max-width: 620px; margin-bottom: 56px; }
.section-head h2 {
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.005em;
  margin: 0 0 12px;
}
.section-head p { color: var(--ink-dim); font-size: 15.5px; line-height: 1.6; max-width: 520px; }

.stage {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
}
.stage:last-child { border-bottom: 1px solid var(--line); }
.stage-num {
  font-family: 'Big Shoulders Display', sans-serif;
  font-size: 64px;
  font-weight: 700;
  line-height: 0.9;
  color: var(--paper-3);
  -webkit-text-stroke: 1.5px var(--ink);
}
.stage-body h3 { font-size: 19px; margin: 0 0 8px; font-weight: 700; }
.stage-body p { font-size: 14.5px; color: var(--ink-dim); line-height: 1.6; margin: 0; max-width: 560px; }

/* ---------- services spec sheet ---------- */
.services { padding: 0 0 90px; }
.spec-sheet { border-top: 2px solid var(--ink); }
.spec-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.spec-row .name { font-size: 16px; font-weight: 600; }
.spec-row .meta {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* ---------- service area diagram ---------- */
.area { padding: 0 0 90px; }
.area-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: center; }
.area-copy p { color: var(--ink-dim); font-size: 15px; line-height: 1.65; max-width: 420px; }
.area-map {
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  padding: 8px;
}
.area-map svg { width: 100%; height: auto; display: block; }
.area-pin-label {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 10px;
  font-weight: 600;
  fill: var(--ink);
}

/* ---------- pull quote ---------- */
.quote-block { padding: 0 0 90px; }
.quote-block blockquote {
  margin: 0;
  border-left: 4px solid var(--accent);
  padding-left: 28px;
  max-width: 760px;
}
.quote-block blockquote p {
  font-size: 25px;
  line-height: 1.45;
  font-weight: 500;
  margin: 0 0 16px;
}
.quote-cite { font-size: 13.5px; color: var(--ink-faint); }
.quote-cite b { color: var(--ink); font-weight: 600; }

/* ---------- CTA band (dark, inverted) ---------- */
.cta-band { background: var(--dark); color: var(--on-dark); padding: 70px 0; }
.cta-band .wrap { display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.cta-band h2 {
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  font-size: 34px;
  font-weight: 700;
  margin: 0 0 6px;
  max-width: 480px;
  line-height: 1.02;
}
.cta-band p { color: var(--on-dark-dim); font-size: 14.5px; margin: 0; }
.cta-band .btn-row { flex-shrink: 0; }

/* ---------- footer: dense colophon ---------- */
footer { padding: 50px 0 30px; }
.foot-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.foot-brand {
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  font-weight: 700;
  font-size: 20px;
}
.foot-brand + p { font-size: 13px; color: var(--ink-faint); margin-top: 10px; line-height: 1.6; max-width: 220px; }
.foot-col h4 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin: 0 0 12px;
}
.foot-col div, .foot-col a { display: block; font-size: 13.5px; color: var(--ink-dim); margin-bottom: 7px; }
.foot-col a:hover { color: var(--ink); }
.foot-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 22px;
  font-size: 12.5px;
  color: var(--ink-faint);
}
.foot-bottom a { color: var(--accent); font-weight: 600; }

/* ---------- responsive ---------- */
@media (min-width: 861px) {
  .nav-phone { display: block; }
  .nav .wrap.nav-bar { display: flex; }
}
@media (max-width: 860px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 20px;
    background: var(--paper);
    border-bottom: 3px solid var(--ink);
    z-index: 51;
  }
  .nav:has(.nav-menu[open]) .nav-links { display: flex; }
  .nav-links a {
    min-height: 44px;
    display: flex;
    align-items: center;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    text-transform: none;
    letter-spacing: 0;
  }
  .nav-links a.nav-panel-cta,
  .nav-links a.nav-panel-only {
    display: flex;
    margin-top: 0;
    justify-content: flex-start;
    width: 100%;
    border-bottom: 1px solid var(--line);
    text-transform: none;
    letter-spacing: 0;
  }
  .nav-links a.nav-panel-cta {
    display: inline-flex;
    margin-top: 12px;
    justify-content: center;
    border-bottom: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }
  .nav-cta { display: none; }
  button.nav-toggle,
  summary.nav-toggle { display: flex; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero h1 { font-size: 40px; }
  .area-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .cta-band .wrap { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .foot-grid { grid-template-columns: 1fr; }
  .stage { grid-template-columns: 80px 1fr; }
  .stage-num { font-size: 44px; }
}


/* --- Accessibility baseline (Web Interface Guidelines) --- */
.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: #111;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-radius: 6px;
  transform: translateY(-200%);
}
.skip-link:focus { outline: none; }
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid currentColor;
  outline-offset: 2px;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}
[id] {
  scroll-margin-top: calc(5.5rem + env(safe-area-inset-top, 0px));
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Safe-area gutters on sticky chrome; contain scroll chaining in drawers/overlays */
.nav, .nav-min, .masthead, .bar {
  padding-left: max(0px, env(safe-area-inset-left, 0px));
  padding-right: max(0px, env(safe-area-inset-right, 0px));
}
.nav-drawer {
  overscroll-behavior: contain;
}

/* --- Web Interface Guidelines extras --- */
a, button, summary, input, select, textarea, label, [role="button"], [role="tab"] {
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.08);
}
h1, h2, h3 { text-wrap: pretty; }