/*
 * ============================================================
 *  CLEAR IMPACT SYSTEMS - Header Component
 *  Matches screenshot: dark navy, gold ticker, centered nav,
 *  gold-bordered CTA right.
 * ============================================================
 */

/* ── MAIN HEADER ──────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--cis-black);    /* #080C13 */
  border-bottom: 1px solid var(--cis-navy-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 110px;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--space-8);
  gap: var(--space-8);
}

/* ── LOGO ─────────────────────────────────────────────────── */

.site-header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
  padding-block: var(--space-2);
  padding-right: var(--space-4);
}

/* Bulletproof logo sizing: fixed height + width:auto always preserves the
   image's intrinsic ratio. No aspect-ratio / object-fit / presentational
   width|height attributes that could force a wrong ratio and "smush" it. */
.site-header__logo img {
  display: block;
  height: 70px;
  width: auto;
  max-width: none;
  transition: opacity var(--transition-fast);
}

.site-header__logo:hover img { opacity: 0.85; }

@media (max-width: 640px) {
  .site-header__inner { height: 90px; }
  .site-header__logo img { height: 56px; }
}

/* ── PRIMARY NAV ──────────────────────────────────────────── */

.site-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--cis-silver);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--cis-gold);
}

.site-nav__link[aria-current="page"] {
  background: var(--cis-gold-glow);
}

/* Dropdown chevron */
.site-nav__link .chevron {
  width: 10px;
  height: 10px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform var(--transition-fast);
}

.site-nav__item:hover .chevron,
.site-nav__item:focus-within .chevron {
  transform: rotate(180deg);
}

/* ── DROPDOWN MENUS ───────────────────────────────────────── */

.site-nav__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--cis-navy);
  border: 1px solid var(--cis-navy-border);
  border-top: 2px solid var(--cis-gold);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2) 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(-6px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base),
    visibility var(--transition-base);
  /* Grace period: when the cursor leaves, wait before closing so the menu
     does not vanish while the cursor crosses the gap or moves diagonally
     toward a wider item. Opening (the :hover rule below) overrides this to 0. */
  transition-delay: 0.35s;
  z-index: var(--z-dropdown);
}

.site-nav__item:hover .site-nav__dropdown,
.site-nav__item:focus-within .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;   /* open immediately on hover */
}

/* Invisible hover bridge: spans the gap between the nav link and its dropdown
   so :hover is never lost while the cursor travels to an item. It is widened
   past the trigger on both sides so a diagonal move toward the wider dropdown
   stays inside a hoverable region. Without this, the items are unclickable. */
.site-nav__item::after {
  content: "";
  position: absolute;
  left: -40px;
  right: -40px;
  top: 100%;
  height: 18px;
}

/* The bridge must not steal hover from a neighbour when this item is idle;
   only keep it active while this item (or its menu) is actually engaged. */
.site-nav__item:not(:hover):not(:focus-within)::after {
  pointer-events: none;
}

/* The hover bridge only matters for desktop hover menus; disable it in the
   mobile accordion so it cannot intercept taps on adjacent items. */
@media (max-width: 1024px) {
  .site-nav__item::after { display: none; }
}

.site-nav__dropdown a {
  display: block;
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  color: var(--cis-silver);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast), padding-left var(--transition-fast);
}

.site-nav__dropdown a:hover {
  color: var(--cis-gold);
  background: var(--cis-gold-glow);
  padding-left: var(--space-6);
}

/* ── HEADER CTA ───────────────────────────────────────────── */

.site-header__cta {
  flex-shrink: 0;
}

.site-header__cta .btn--outline-gold {
  font-size: 10px;
  padding: var(--space-2) var(--space-5);
}

/* ── MOBILE MENU TOGGLE ───────────────────────────────────── */

.site-header__menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
}

.site-header__menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--cis-silver);
  transition: all var(--transition-base);
  border-radius: 2px;
}

/* Toggle animation when open */
.site-header__menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header__menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.site-header__menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── SCROLL-AWARE HEADER ──────────────────────────────────── */

/* Slightly more opaque shadow when scrolled */
.site-header.is-scrolled {
  background-color: rgba(8, 12, 19, 0.97);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ── RESPONSIVE ───────────────────────────────────────────── */

@media (max-width: 1024px) {
  .site-header__menu-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--cis-black);
    flex-direction: column;
    justify-content: center;
    padding: var(--space-12) var(--space-8);
    transform: translateX(-100%);
    transition: transform var(--duration-slow) var(--ease-out);
    z-index: var(--z-overlay);
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav__list {
    flex-direction: column;
    gap: var(--space-2);
    width: 100%;
  }

  .site-nav__link {
    font-size: var(--text-md);
    letter-spacing: var(--tracking-wide);
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--cis-navy-border);
    border-radius: 0;
    width: 100%;
  }

  .site-nav__dropdown {
    position: static;
    transform: none !important;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    background: var(--cis-navy-surface);
    border: none;
    border-left: 2px solid var(--cis-gold);
    border-radius: 0;
    box-shadow: none;
    padding: var(--space-2) 0 var(--space-2) var(--space-4);
    margin-top: var(--space-2);
    display: none;
  }

  .site-nav__item.is-expanded .site-nav__dropdown {
    display: block;
  }

  .site-header__cta {
    display: none;
  }
}