/* ==========================================================================
   Valle Plane Washing — Design Tokens
   Palette: hangar charcoal + brushed aluminum + runway amber + taxiway teal
   Type: Space Grotesk (display) / Inter (body) / IBM Plex Mono (instruments)
   ========================================================================== */

:root {
  --ink: #12151a;
  --ink-soft: #1b2027;
  --ink-line: #2a313b;
  --steel: #8b95a1;
  --steel-light: #c3cad3;
  --paper: #f3f1ec;
  --paper-dim: #e8e5dd;
  --amber: #e4993b;
  --amber-bright: #f4b05e;
  --taxiway: #3e7c74;
  --taxiway-bright: #56a297;
  --white: #ffffff;

  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --radius: 4px;
  --max-width: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--amber);
  display: inline-block;
}

/* Buttons ---------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  text-decoration: none;
  padding: 13px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--amber);
  color: var(--ink);
  font-weight: 600;
}
.btn-primary:hover { background: var(--amber-bright); }

.btn-outline {
  border-color: var(--steel);
  color: var(--paper);
}
.btn-outline:hover { border-color: var(--amber); color: var(--amber); }

.btn-outline-dark {
  border-color: var(--ink-line);
  color: var(--ink);
}
.btn-outline-dark:hover { border-color: var(--taxiway); color: var(--taxiway); }

/* Nav ---------------------------------------------------------------------- */

.site-header {
  background: var(--ink);
  border-bottom: 1px solid var(--ink-line);
  position: sticky;
  top: 0;
  z-index: 40;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
}

.tail-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--amber);
  border-radius: 3px;
  padding: 5px 8px;
  line-height: 1;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand-name span { color: var(--steel-light); font-weight: 500; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  text-decoration: none;
  color: var(--steel-light);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color .15s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--amber); }

.nav-cta { display: flex; align-items: center; gap: 18px; }

.nav-phone {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--paper);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--paper);
  font-size: 1.4rem;
  cursor: pointer;
}

@media (min-width: 780px) {
  .nav-phone { display: inline-block; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink);
    padding: 20px 28px 26px;
    gap: 18px;
    border-bottom: 1px solid var(--ink-line);
  }
}

/* Footer --------------------------------------------------------------- */

.site-footer {
  background: var(--ink);
  color: var(--steel-light);
  padding: 56px 0 28px;
  margin-top: 90px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--ink-line);
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 16px;
}

.footer-grid a {
  display: block;
  color: var(--steel-light);
  text-decoration: none;
  font-size: 0.92rem;
  margin-bottom: 10px;
}
.footer-grid a:hover { color: var(--amber); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 0.8rem;
  color: var(--steel);
  font-family: var(--font-mono);
}

.social-row { display: flex; gap: 14px; }
.social-row a {
  width: 34px; height: 34px;
  border: 1px solid var(--ink-line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--steel-light);
  text-decoration: none;
  font-size: 0.85rem;
  transition: border-color .15s ease, color .15s ease;
}
.social-row a:hover { border-color: var(--amber); color: var(--amber); }

/* Section helpers -------------------------------------------------------- */

.section { padding: 90px 0; }
.section-dark { background: var(--ink); color: var(--paper); }
.section-tight { padding: 60px 0; }

.section-head { max-width: 620px; margin-bottom: 48px; }
.section-head p { color: var(--steel); font-size: 1.05rem; }
.section-dark .section-head p { color: var(--steel-light); }

/* Photo placeholder -------------------------------------------------------- */

.photo-placeholder {
  border: 1px dashed var(--steel);
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(135deg, rgba(139,149,161,0.08) 0 2px, transparent 2px 14px),
    var(--paper-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 20px;
}

.section-dark .photo-placeholder {
  background:
    repeating-linear-gradient(135deg, rgba(196,202,211,0.06) 0 2px, transparent 2px 14px),
    var(--ink-soft);
  border-color: var(--ink-line);
  color: var(--steel);
}

/* Utility ------------------------------------------------------------------ */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 860px) {
  .grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .grid-3 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--paper-dim);
  border-radius: var(--radius);
  padding: 30px;
}
.section-dark .card {
  background: var(--ink-soft);
  border-color: var(--ink-line);
}

.divider {
  height: 1px;
  background: var(--ink-line);
  border: none;
  margin: 0;
}