/* ============================================================
   Reliability Resources, LLC — site stylesheet
   Design tokens
   ============================================================ */
:root {
  --navy: #16233A;
  --navy-soft: #1F3350;
  --steel: #33506B;
  --accent: #E07B39;
  --accent-dark: #C4611F;
  --bg: #F5F6F8;
  --paper: #FFFFFF;
  --ink: #1B222C;
  --ink-soft: #4B5563;
  --line: #D8DEE4;
  --line-dark: #2B3B54;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --maxw: 1120px;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; }
.site-footer { flex-shrink: 0; }

img { max-width: 100%; display: block; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--navy);
  margin: 0 0 0.5em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  display: block;
  margin-bottom: 0.5em;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.nowrap { white-space: nowrap; }

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  z-index: 999;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ============================================================
   Header / Nav
   ============================================================ */
.site-header {
  background: var(--navy);
  border-bottom: 3px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand:hover { text-decoration: none; }
.brand img {
  height: 38px;
  width: auto;
  display: block;
}
.brand small {
  display: block;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.66rem;
  color: #A9B7C9;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  width: 42px;
  height: 38px;
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 9px;
  right: 9px;
  height: 2px;
  background: #fff;
  transition: transform 0.2s ease;
}
.nav-toggle span { top: 18px; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 10px 14px;
  color: #D6DEE8;
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  text-decoration: none;
  border-bottom-color: var(--accent);
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    width: 100%;
    border-top: 1px solid var(--line-dark);
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav a { padding: 14px 24px; border-bottom: 1px solid var(--line-dark); }
  .header-inner { flex-wrap: wrap; }
}

/* ============================================================
   Bracket frame — signature motif
   Corner tick marks referencing engineering-drawing datum marks
   ============================================================ */
.bracket-frame {
  position: relative;
  padding: 32px;
  border: 1px solid var(--line);
  background: var(--paper);
}
.bracket-frame::before,
.bracket-frame::after,
.bracket-frame > .bf-corner-tr,
.bracket-frame > .bf-corner-br {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
}
.bracket-frame::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.bracket-frame::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* ============================================================
   Slider (home page)
   ============================================================ */
.slider {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  aspect-ratio: 1840 / 690;
}
.slider-track {
  display: flex;
  height: 100%;
  transition: transform 0.5s ease;
}
.slider-slide {
  flex: 0 0 100%;
  height: 100%;
}
.slider-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.slider-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(22,35,58,0.75);
  color: #fff;
  border: none;
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  font-family: var(--font-body);
}
.slider-nav:hover { background: var(--accent); }
.slider-prev { left: 0; }
.slider-next { right: 0; }
.slider-dots {
  position: absolute;
  bottom: 14px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 8px;
}
.slider-dots button {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid #fff;
  background: rgba(255,255,255,0.35);
  padding: 0;
  cursor: pointer;
}
.slider-dots button[aria-current="true"] { background: var(--accent); border-color: var(--accent); }

@media (max-width: 760px) {
  .slider-nav { width: 34px; height: 34px; font-size: 1rem; }
}

/* Logo plates — used for manufacturer + membership marks on white cards */
.logo-plate {
  height: 46px;
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}
.logo-plate img { max-height: 100%; max-width: 100%; width: auto; height: auto; object-fit: contain; }
.sub-brand-row .logo-plate { height: 24px; margin-bottom: 0; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-soft) 60%, var(--steel) 100%);
  color: #fff;
  padding: 72px 0 84px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero .wrap { position: relative; }
.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.2rem);
  max-width: 16ch;
  margin-bottom: 0.35em;
}
.hero p.lead {
  max-width: 52ch;
  color: #C9D3E0;
  font-size: 1.1rem;
  margin-bottom: 1.8em;
}

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.9rem;
  padding: 13px 26px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); text-decoration: none; }
.btn-ghost { border-color: rgba(255,255,255,0.4); color: #fff; }
.btn-ghost:hover { border-color: #fff; text-decoration: none; }

/* ============================================================
   Sections
   ============================================================ */
section { padding: 64px 0; }
section.alt { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head { max-width: 60ch; margin-bottom: 2.2em; }
.section-head p { color: var(--ink-soft); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

@media (max-width: 760px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  section { padding: 44px 0; }
}

/* Manufacturer / partner cards */
.mfr-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 26px;
}
.mfr-card h3 { font-size: 1.15rem; margin-bottom: 0.4em; }
.mfr-card p { color: var(--ink-soft); font-size: 0.96rem; }
.mfr-card .visit-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sub-brands {
  margin-top: 18px;
  border-top: 1px dashed var(--line);
  padding-top: 16px;
  display: grid;
  gap: 12px;
}
.sub-brand-row {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 0.92rem;
}
.sub-brand-row .logo-plate {
  width: 130px;
  height: 52px;
  min-width: 130px;
  margin-bottom: 0;
  justify-content: flex-start;
}

/* Spec / data list (key : value), used in About memberships */
.spec-list { border-top: 1px solid var(--line); margin-top: 8px; }
.spec-row {
  display: flex;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.spec-row .k {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-dark);
  min-width: 130px;
  flex-shrink: 0;
}

/* Contact page */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-block dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
  margin-top: 18px;
}
.contact-block dd { margin: 4px 0 0; font-size: 1.05rem; }

.map-frame { border: 1px solid var(--line); background: #fff; }
.map-frame iframe { width: 100%; height: 320px; border: 0; display: block; }

form.contact-form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 500px) { .form-row { grid-template-columns: 1fr; } }

.contact-form label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.contact-form textarea { resize: vertical; min-height: 120px; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--navy);
  color: #A9B7C9;
  padding: 36px 0;
  font-size: 0.85rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.site-footer a { color: #D6DEE8; }

/* Keyboard focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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