/* ================================================================
   LEARN AI WITH MARIAH — Universal Site Nav
   Single source of truth for the top header on every public page.
   Loaded via <link rel="stylesheet" href="/css/site-nav.css"> and paired
   with /js/site-nav.js. Colors use fallbacks so it works on guide pages
   that do not define every brand variable.
   ================================================================ */

/* ── SITE NAV ── */
.site-nav {
  background: var(--black, #2f2d2d);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-nav__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav__brand {
  font-family: 'Anton', sans-serif;
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cream, #fffae7);
  text-decoration: none;
}

.site-nav__brand:hover {
  text-decoration: none;
  opacity: 0.85;
}

.site-nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__links a {
  font-family: 'Open Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cream, #fffae7);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
  display: inline-flex;
  align-items: center;
  line-height: 1.5;
  vertical-align: middle;
  padding: 0.15rem 0;
}

.site-nav__links a:hover,
.site-nav__links a.active {
  opacity: 1;
  text-decoration: none;
}

.site-nav__links a.nav-challenge {
  color: var(--cream, #fffae7);
  background: var(--red, #d02e2e);
  padding: 0.35rem 0.85rem;
  border-radius: 4px;
}

/* ── SITE NAV DROPDOWN ── */
.site-nav__dropdown { position: relative; }

.site-nav__dropdown-trigger {
  all: unset;
  box-sizing: border-box;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cream, #fffae7);
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  line-height: 1.5;
  vertical-align: middle;
  padding: 0.15rem 0;
}

.site-nav__dropdown-trigger:hover,
.site-nav__dropdown[data-open="true"] .site-nav__dropdown-trigger {
  opacity: 1;
}

.site-nav__dropdown-caret {
  font-size: 0.7em;
  transition: transform 0.2s;
  display: inline-block;
}

.site-nav__dropdown[data-open="true"] .site-nav__dropdown-caret {
  transform: rotate(180deg);
}

.site-nav__dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0;
  padding-top: 0.65rem;
  background-clip: padding-box;
  min-width: 280px;
  background: var(--cream, #fffae7);
  border: 1.5px solid rgba(47, 45, 45, 0.12);
  border-radius: 8px;
  padding: 0.5rem 0;
  margin: 0;
  list-style: none;
  box-shadow: 0 12px 32px rgba(47, 45, 45, 0.18);
  z-index: 1001;
}

.site-nav__dropdown[data-open="true"] .site-nav__dropdown-menu,
.site-nav__dropdown:hover .site-nav__dropdown-menu,
.site-nav__dropdown:focus-within .site-nav__dropdown-menu {
  display: block;
}

.site-nav__dropdown-menu li { list-style: none; }

.site-nav__dropdown-menu a {
  display: block;
  padding: 0.7rem 1.2rem;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--black, #2f2d2d);
  text-decoration: none;
  text-transform: none;
  letter-spacing: 0.01em;
  opacity: 1;
  transition: background 0.15s, color 0.15s;
}

.site-nav__dropdown-menu a:hover {
  background: var(--red-light, rgba(208, 46, 46, 0.06));
  color: var(--red, #d02e2e);
  opacity: 1;
}

/* ── MOBILE (matches the home page's final behavior: five items on one row) ── */
@media (max-width: 600px) {
  .site-nav__inner { padding: 0.6rem 1.2rem; flex-wrap: wrap; gap: 0.4rem; }
  .site-nav__brand { font-size: 0.9rem; width: 100%; text-align: center; margin-bottom: 0.3rem; }
  .site-nav__links { gap: 0.15rem; width: 100%; justify-content: center; flex-wrap: nowrap; }
  .site-nav__links li { flex: none; display: flex; align-items: center; }
  .site-nav__links a,
  .site-nav__dropdown-trigger { font-size: 0.6rem; padding: 0.28rem 0.26rem; letter-spacing: 0.01em; line-height: 1.4; white-space: nowrap; }
  .site-nav__links a.nav-challenge { padding: 0.28rem 0.45rem; }
  .site-nav__dropdown-menu { right: 50%; transform: translateX(50%); min-width: 240px; max-width: 92vw; }
  .site-nav__dropdown-menu a { font-size: 0.82rem; padding: 0.6rem 1rem; }
}

/* Hide the nav when printing a guide */
@media print { .site-nav { display: none !important; } }