/**
 * ADCAM DIGITAL — NAVIGATION
 * css/navigation.css
 *
 * Clean white corporate header with authentic AdCam Digital logo.
 */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background: #ffffff;
  border-bottom: 1px solid rgba(220, 229, 242, 0.8);
  backdrop-filter: var(--nav-blur);
  -webkit-backdrop-filter: var(--nav-blur);
  transition: background var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(11, 18, 32, 0.06);
  border-color: #dce5f2;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding-x);
  gap: var(--space-6);
}

/* ============================================================
 * LOGO — AUTHENTIC ADCAM DIGITAL LOGO (Clean & Transparent)
 * ============================================================ */

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.nav-logo__img {
  height: 66px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  display: block;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast);
}

/* Desktop Navigation */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  font-size: var(--text-nav);
  font-weight: 500;
  color: #475569;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  color: #2563eb;
  background: #f1f5f9;
}

.nav-link.is-active,
.nav-link[aria-current="page"] {
  color: #2563eb;
  font-weight: 600;
  background: #eff6ff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: #f8fafc;
  border: 1px solid #dce5f2;
  border-radius: var(--radius-md);
  color: #0b1220;
  cursor: pointer;
  padding: 0;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.nav-toggle:hover {
  border-color: #2563eb;
  background: #eff6ff;
  color: #2563eb;
}

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Menu Panel */
.nav-mobile {
  position: fixed;
  top: var(--nav-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background: #ffffff;
  z-index: calc(var(--z-nav) - 1);
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--container-padding-x) var(--space-8);
  overflow-y: auto;
  border-top: 1px solid #dce5f2;

  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

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

.nav-mobile__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.nav-mobile__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: #0b1220;
  border-radius: var(--radius-md);
  border: 1px solid #e2e8f0;
  background: #f8fafc;
}

.nav-mobile__link.is-active {
  background: #eff6ff;
  border-color: rgba(37, 99, 235, 0.3);
  color: #2563eb;
}

.nav-mobile__divider {
  height: 1px;
  background: #dce5f2;
  margin: var(--space-6) 0;
}

.nav-mobile__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .nav-actions { display: none; }
  .nav-toggle  { display: flex; }
  .nav-logo__img { height: 50px; }
  .site-header { height: var(--nav-height-mobile); }
  .nav-mobile  { top: var(--nav-height-mobile); }
}

body.nav-open { overflow: hidden; }

.nav-offset { padding-top: var(--nav-height); }

@media (max-width: 768px) {
  .nav-offset { padding-top: var(--nav-height-mobile); }
}