/* ==========================================================================
   SAFA BUILDERS — Header & Navigation
   ========================================================================== */

/* ── Site Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background-color: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, height 0.3s ease;
}

/* Ensure container fills full header height so header-inner can centre vertically */
.site-header .container {
  height: 100%;
}

/* Scrolled state */
.site-header.scrolled {
  background-color: var(--clr-white);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  height: 72px;
}

/* Dark page hero variant (starts with transparent dark) */
.site-header.header-transparent {
  background-color: rgba(27, 58, 107, 0.15);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.site-header.header-transparent.scrolled {
  background-color: var(--clr-white);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--sp-6);
}

/* ── Logo ── */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo-img {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  object-fit: contain;
  border-radius: var(--radius);
}

.site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.site-logo-name {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  letter-spacing: -0.01em;
  transition: color 0.3s ease;
}

.site-logo-tagline {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.04em;
  transition: color 0.3s ease;
}

.site-header.scrolled .site-logo-name {
  color: var(--clr-text);
}

.site-header.scrolled .site-logo-tagline {
  color: var(--clr-text-muted);
}

/* ── Main Navigation ── */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.nav-link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.9);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius);
  transition: color 0.2s ease, background-color 0.2s ease;
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: var(--sp-3);
  right: var(--sp-3);
  height: 2px;
  background-color: var(--clr-secondary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
  border-radius: var(--radius-full);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link:hover {
  color: var(--clr-white);
  background-color: rgba(255,255,255,0.08);
}

.nav-link.active {
  color: var(--clr-secondary);
}

/* Scrolled nav link colors */
.site-header.scrolled .nav-link {
  color: var(--clr-text-light);
}

.site-header.scrolled .nav-link:hover {
  color: var(--clr-primary);
  background-color: var(--clr-bg);
}

.site-header.scrolled .nav-link.active {
  color: var(--clr-primary);
}

/* ── Dropdown ── */
.nav-item {
  position: relative;
}

.nav-item-has-dropdown > .nav-link {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.nav-item-has-dropdown > .nav-link .dropdown-arrow {
  width: 14px;
  height: 14px;
  fill: currentColor;
  transition: transform 0.2s ease;
}

.nav-item-has-dropdown:hover > .nav-link .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + var(--sp-2));
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background-color: var(--clr-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-2);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  z-index: var(--z-dropdown);
  border: 1px solid var(--clr-border-light);
}

.nav-item-has-dropdown:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.6rem var(--sp-4);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  color: var(--clr-text-light);
  font-weight: var(--fw-medium);
  transition: var(--transition-fast);
}

.nav-dropdown-link:hover {
  background-color: var(--clr-primary-xlight);
  color: var(--clr-primary);
}

.nav-dropdown-link svg {
  width: 16px;
  height: 16px;
  fill: var(--clr-text-muted);
}

.nav-dropdown-link:hover svg {
  fill: var(--clr-primary);
}

/* ── Header CTA ── */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: rgba(255,255,255,0.85);
  transition: color 0.2s ease;
}

.header-phone svg {
  width: 16px;
  height: 16px;
  fill: var(--clr-secondary);
}

.site-header.scrolled .header-phone {
  color: var(--clr-text);
}

.header-cta-btn {
  padding: 0.6rem 1.25rem;
  font-size: var(--fs-sm);
}

/* ── Mobile Menu Toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  gap: 5px;
  cursor: pointer;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  transition: var(--transition-fast);
}

.site-header.scrolled .nav-toggle {
  background: var(--clr-bg);
  border-color: var(--clr-border);
}

.nav-toggle:hover {
  background: rgba(255,255,255,0.2);
}

.site-header.scrolled .nav-toggle:hover {
  background: var(--clr-bg-alt);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--clr-white);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
  transform-origin: center;
}

.site-header.scrolled .nav-toggle-bar {
  background-color: var(--clr-text);
}

/* Hamburger animation */
.nav-toggle.open .nav-toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.open .nav-toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ── Mobile Navigation ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--clr-white);
  box-shadow: var(--shadow-lg);
  z-index: calc(var(--z-sticky) - 1);
  overflow-y: auto;
  max-height: calc(100vh - var(--header-height));
  transform: translateY(-10px);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.mobile-nav.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.mobile-nav-inner {
  padding: var(--sp-4) var(--container-padding) var(--sp-6);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 0;
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: var(--clr-text);
  border-bottom: 1px solid var(--clr-border-light);
  transition: color 0.2s ease;
}

.mobile-nav-link:hover {
  color: var(--clr-primary);
}

.mobile-nav-link.active {
  color: var(--clr-primary);
  font-weight: var(--fw-semibold);
}

.mobile-sub-nav {
  padding-left: var(--sp-4);
  border-left: 2px solid var(--clr-primary-xlight);
  margin: var(--sp-2) 0;
}

.mobile-sub-link {
  display: block;
  padding: 0.75rem 0;
  font-size: var(--fs-sm);
  color: var(--clr-text-light);
  transition: color 0.2s ease;
}

.mobile-sub-link:hover {
  color: var(--clr-primary);
}

.mobile-nav-cta {
  margin-top: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.mobile-nav-phone {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-text);
}

/* ── Responsive ── */
@media (max-width: 1023px) {
  .site-nav { display: none; }
  .header-phone { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: block; }
}

@media (max-width: 575px) {
  .site-logo-text { display: none; }
}