/* ==========================================================================
   USL Corporation — static site stylesheet
   Faithful clone of https://uslcorporation.wixsite.com/my-site
   Fonts/colors sourced from live-site getComputedStyle extraction —
   see 02_Font_Color_Asset_Specification.md for the full source table.
   ========================================================================== */

:root {
  --font-headline-serif: 'Maitree', serif;              /* About page hero */
  --font-headline-display: 'Black Ops One', sans-serif;  /* other page headlines + blog heading */
  --font-nav: 'Barlow', sans-serif;                      /* nav items (DIN Neuzeit Grotesk substitute) */
  --font-body: -apple-system, 'Helvetica Neue', Helvetica, Arial, sans-serif; /* body / Helvetica-Avenir substitute */

  --color-bg: #ffffff;
  --color-text: #000000;
  --color-nav-active-bg: #323232;
  --color-nav-active-text: #ffffff;
  --color-nav-text: #000000;
  --color-btn-bg: #000000;
  --color-btn-text: #ffffff;
  --color-warning-bg: #fff8e1;
  --color-warning-border: #b26a00;

  --content-max-width: 980px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

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

a { color: inherit; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #000;
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
}
.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ---------- Header / logo / nav ---------- */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 16px 24px;
  border-bottom: 1px solid #eaeaea;
}

.site-logo img {
  height: 48px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid #000;
  padding: 6px 10px;
  font-family: var(--font-nav);
  font-size: 16px;
  cursor: pointer;
}

.site-nav {
  display: flex;
}

.site-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.site-nav li {
  position: relative;
}

.site-nav a,
.site-nav button.nav-dropdown-toggle {
  display: block;
  font-family: var(--font-nav);
  font-size: 17px;
  color: var(--color-nav-text);
  text-decoration: none;
  padding: 14px 20px;
  background: none;
  border: none;
  cursor: pointer;
}

.site-nav a[aria-current="page"],
.site-nav .nav-dropdown.current > button {
  background: var(--color-nav-active-bg);
  color: var(--color-nav-active-text);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  left: 0;
  top: 100%;
  background: #fff;
  border: 1px solid #eaeaea;
  min-width: 220px;
  list-style: none;
  margin: 0;
  padding: 0;
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  padding: 12px 20px;
  white-space: nowrap;
}

/* ---------- Main content ---------- */

main {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

h1 {
  font-family: var(--font-headline-display);
  font-weight: 400;
  font-size: 34px;
  line-height: 1.25;
  margin: 0 0 24px;
}

.page-about h1 {
  font-family: var(--font-headline-serif);
  font-size: 36px;
}

h2 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  margin: 32px 0 12px;
}

h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  margin: 24px 0 8px;
}

p { margin: 0 0 16px; }

ul, ol { margin: 0 0 16px; padding-left: 24px; }
li { margin-bottom: 6px; }

.subtext {
  font-size: 16px;
  margin-bottom: 32px;
}

/* ---------- Hero image (Aerospace & Defense) ---------- */

.hero-image {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  margin-bottom: 32px;
}

/* ---------- Business identifiers footer block (Aerospace & Defense) ---------- */

.business-identifiers {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid #eaeaea;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.7;
}

/* ---------- Capability Statement (image page) ---------- */

.capability-statement-image {
  max-width: 760px;
  margin: 0 auto 32px;
  border: 1px solid #d6e4f5;
}

.capability-text-alternative {
  max-width: var(--content-max-width);
}
.capability-text-alternative h2 { margin-top: 0; }
.capability-text-alternative dl { margin: 0 0 16px; }
.capability-text-alternative dt { font-weight: 700; margin-top: 12px; }
.capability-text-alternative dd { margin: 4px 0 0; }

/* ---------- Blog ---------- */

.blog-post-card {
  display: block;
  max-width: 320px;
  text-decoration: none;
  color: inherit;
  margin-bottom: 32px;
}
.blog-post-card img { margin-bottom: 12px; }
.blog-post-date { font-size: 14px; color: #444; margin-bottom: 4px; }
.blog-post-title { font-size: 20px; font-weight: 700; }

/* ---------- Contact page ---------- */

.contact-info {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.contact-info-block h2 { margin-top: 0; }

.contact-warning {
  background: var(--color-warning-bg);
  border-left: 4px solid var(--color-warning-border);
  padding: 16px 20px;
  margin: 0 0 32px;
  font-size: 15px;
}
.contact-warning strong { display: block; margin-bottom: 6px; }

.mailto-cta {
  display: inline-block;
  background: var(--color-btn-bg);
  color: var(--color-btn-text);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 0;
}

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

.site-footer {
  border-top: 1px solid #eaeaea;
  padding: 24px;
  text-align: center;
  font-size: 14px;
}

/* ---------- Responsive breakpoints ---------- */

@media (max-width: 900px) {
  .site-nav { display: none; width: 100%; order: 3; }
  .site-nav.open { display: block; }
  .nav-toggle { display: inline-block; }
  .site-nav ul { flex-direction: column; }
  .nav-dropdown-menu { position: static; border: none; }
  .nav-dropdown-menu a { padding-left: 40px; }
}

@media (max-width: 600px) {
  main { padding: 32px 16px 48px; }
  h1 { font-size: 26px; }
  .site-header { padding: 12px 16px; }
  .contact-info { gap: 24px; }
}