/* ================================================================
   COLUMBIA PUBLICATION — header.css
   Sticky header, desktop nav, dropdown, mobile menu.
   ================================================================ */

/* ── Top announcement bar ──────────────────────────────────────── */
.topbar {
  background: var(--navy-deep);
  padding-block: var(--sp-2);
  border-bottom: 1px solid rgba(198,168,90,.15);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.topbar__brand {
  font-size: 0.75rem;
  color: rgba(253,251,247,.6);
  font-weight: 500;
}

.topbar__brand strong { color: var(--cream); font-weight: 700; }

.topbar__cta {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold-light);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color var(--ease);
}

.topbar__cta:hover { color: var(--gold); }

/* ── Site header ──────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
  /* CRITICAL: overflow visible so dropdown escapes the header */
  overflow: visible;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--sp-6);
}

/* ── Logo ─────────────────────────────────────────────────────── */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo img {
  height: 65px;
  width: auto;
  display: block;
}

/* Fallback text logo if image missing */
.site-logo__text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
}

.site-logo__text span { color: var(--gold); }

/* ── Primary desktop nav ──────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  justify-content: center;
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-light);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r);
  transition: color var(--ease), background var(--ease);
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  background: none;
  border: none;
}

.site-nav__link:hover,
.site-nav__item.is-active > .site-nav__link {
  color: var(--navy);
  background: var(--navy-pale);
}

/* Active page indicator */
.site-nav__item.is-active > .site-nav__link {
  font-weight: 600;
}

/* Dropdown chevron */
.site-nav__link[aria-haspopup]::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: var(--sp-1);
  transition: transform var(--ease);
}

.site-nav__item.is-open > .site-nav__link[aria-haspopup]::after,
.site-nav__item:hover > .site-nav__link[aria-haspopup]::after {
  transform: rotate(180deg);
}

/* ── Dropdown ─────────────────────────────────────────────────── */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 1px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 620px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-5);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--ease), visibility var(--ease), transform var(--ease);
  z-index: 1200;
}

/* Open states: hover OR click (.is-open) */
.site-nav__item:hover .nav-dropdown,
.site-nav__item.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-2);
}

.nav-dropdown__link {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r);
  text-decoration: none;
  transition: background var(--ease);
}

.nav-dropdown__link:hover { background: var(--navy-pale); }

.nav-dropdown__icon {
  font-size: 1.125rem;
  line-height: 1.4;
  flex-shrink: 0;
}

.nav-dropdown__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.3;
  display: block;
}

.nav-dropdown__desc {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
  display: block;
  margin-top: 2px;
}

/* ── Nav CTAs ─────────────────────────────────────────────────── */
.site-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

/* ── Mobile hamburger ─────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--r);
  background: none;
  border: 1px solid var(--border-light);
  cursor: pointer;
  padding: 0;
  transition: background var(--ease);
}

.nav-toggle:hover { background: var(--parchment); }

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--ease), opacity var(--ease);
}

/* Hamburger → X */
.nav-toggle.is-open .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile nav panel ─────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  overflow-y: auto;
  z-index: 999;
  padding: var(--sp-6);
  flex-direction: column;
  gap: var(--sp-2);
  border-top: 1px solid var(--border-light);
}

.mobile-nav.is-open { display: flex; }

.mobile-nav__link {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r);
  text-decoration: none;
  transition: background var(--ease), color var(--ease);
}

.mobile-nav__link:hover,
.mobile-nav__link.is-active {
  background: var(--navy-pale);
  color: var(--navy);
}

.mobile-nav__section-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: var(--sp-4) var(--sp-4) var(--sp-2);
  border-top: 1px solid var(--border-light);
  margin-top: var(--sp-2);
}

.mobile-nav__divider { height: 1px; background: var(--border-light); margin-block: var(--sp-2); }

.mobile-nav__cta {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--border-light);
  margin-top: var(--sp-4);
}

/* Prevent body scroll when mobile nav open */
body.nav-open { overflow: hidden; }

/* ── Responsive ─────────────────────────────────────────────────  */
@media (max-width: 1100px) {
  .nav-dropdown { min-width: 480px; }
  .nav-dropdown__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .site-nav        { display: none; }
  .site-nav__actions .btn--outline-ivory { display: none; }
  .nav-toggle      { display: flex; }
}

@media (max-width: 480px) {
  .site-header__inner { height: 60px; }
  .site-logo img { height: 48px; }
}


/* ================================================================
   NAV DROPDOWN — Option B (no icons, text-only + proof card)
   ================================================================ */

/* Wide variant for Services (has proof card) */
.nav-dropdown--wide {
  min-width: 840px;
}

/* Default width for Resources */
.nav-dropdown {
  min-width: 560px;
}

/* Dropdown body: flex row */
.nav-dd__body {
  display: flex;
  gap: 0;
  align-items: flex-start;
}

/* Text columns */
.nav-dd__col {
  flex: 1;
  padding: var(--sp-2) var(--sp-5) var(--sp-4);
  border-right: 1px solid var(--border-light);
}

.nav-dd__col:last-child {
  border-right: none;
}

/* Column heading */
.nav-dd__heading {
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin: 0 0 var(--sp-3);
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid var(--border-light);
}

/* Text link */
.nav-dd__link {
  display: block;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r);
  text-decoration: none;
  transition: background var(--ease);
  margin-bottom: 2px;
}

.nav-dd__link:hover {
  background: var(--navy-pale);
}

.nav-dd__name {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.3;
  transition: color var(--ease);
}

.nav-dd__link:hover .nav-dd__name {
  color: var(--navy-deep);
}

.nav-dd__sub {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
  margin-top: 1px;
}

/* Proof card column */
.nav-dd__proof {
  width: 220px;
  flex-shrink: 0;
  padding: var(--sp-6);
  background: var(--navy);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.nav-dd__proof-stars {
  color: var(--gold);
  font-size: 0.875rem;
  letter-spacing: 2px;
}

.nav-dd__proof-quote {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-style: italic;
  color: rgba(253,251,247,.9);
  line-height: 1.6;
  margin: 0;
}

.nav-dd__proof-name {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--cream);
  margin: 0;
}

.nav-dd__proof-meta {
  font-size: 0.75rem;
  color: rgba(253,251,247,.5);
  line-height: 1.5;
  margin: 0;
}

.nav-dd__proof-verify {
  font-size: 0.75rem;
  color: var(--gold-light);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--ease);
}

.nav-dd__proof-verify:hover {
  color: var(--gold);
}

/* Override nav-dropdown base positioning for wide variant */
.nav-dropdown--wide {
  left: 0;
  transform: translateY(-6px);
}

.site-nav__item:hover .nav-dropdown--wide,
.site-nav__item.is-open .nav-dropdown--wide {
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1100px) {
  .nav-dropdown--wide { min-width: 680px; }
  .nav-dd__proof { width: 180px; }
}