/*
 * ADIMED Theme — header.css
 * Sticky header, mega-menu, mobile nav
 */

/* ============================================================
   SITE HEADER
============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-primary);
  transition: background var(--transition-base), box-shadow var(--transition-base), padding var(--transition-base);
}

.site-header--scrolled {
  background: rgba(0,27,66,.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-md);
}

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

.site-header--scrolled .site-header__inner { height: 60px; }

/* ============================================================
   LOGO
============================================================ */
.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-header__logo-img {
  height: 40px;
  width: auto;
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.02em;
}

.site-header__logo-sub {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--color-accent);
  text-transform: uppercase;
}

/* ============================================================
   NAVIGATION DESKTOP
============================================================ */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255,255,255,.85);
  letter-spacing: .02em;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: #fff;
  background: rgba(255,255,255,.1);
}

.site-nav__chevron {
  transition: transform var(--transition-base);
  color: rgba(255,255,255,.5);
}

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

/* ============================================================
   MEGA MENU
============================================================ */
.site-nav__item--mega {
  position: relative;
}

.mega-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 560px;
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-lighter);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 100;
}

.site-nav__item--mega:hover .mega-menu,
.site-nav__item--mega:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-menu__inner { padding: var(--space-5); }

.mega-menu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.mega-menu__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.mega-menu__item:hover { background: var(--color-bg-alt); }

.mega-menu__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(0,43,92,.08);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.mega-menu__content { min-width: 0; }

.mega-menu__title {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mega-menu__subtitle {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-gray);
  line-height: 1.4;
}

.mega-menu__footer {
  border-top: 1px solid var(--color-gray-lighter);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  text-align: center;
}

.mega-menu__all {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: .04em;
}

.mega-menu__all:hover { color: var(--color-accent-dark); }

/* ============================================================
   HEADER ACTIONS
============================================================ */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.site-header__cta {
  font-size: var(--fs-sm);
  padding: .5rem 1.25rem;
}

/* ============================================================
   BURGER BUTTON
============================================================ */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.burger:hover { background: rgba(255,255,255,.1); }

.burger__line {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.burger[aria-expanded="true"] .burger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] .burger__line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.burger[aria-expanded="true"] .burger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   MOBILE OVERLAY
============================================================ */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   MOBILE NAV DRAWER
============================================================ */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(340px, 90vw);
  background: var(--color-primary);
  z-index: 999;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  padding-bottom: var(--space-8);
}

.mobile-nav[aria-hidden="false"] {
  transform: translateX(0);
}

.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.mobile-nav__logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.mobile-nav__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,.7);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-nav__close:hover { background: rgba(255,255,255,.1); color: #fff; }

.mobile-nav__list { padding: var(--space-4) 0; flex: 1; }

.mobile-nav__link {
  display: block;
  padding: var(--space-4) var(--space-6);
  font-size: var(--fs-base);
  font-weight: 600;
  color: rgba(255,255,255,.85);
  transition: color var(--transition-fast), background var(--transition-fast);
  border-bottom: 1px solid rgba(255,255,255,.05);
}

.mobile-nav__link:hover { color: #fff; background: rgba(255,255,255,.08); }

.mobile-nav__cta {
  padding: var(--space-6);
  border-top: 1px solid rgba(255,255,255,.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav__contact { display: flex; flex-direction: column; gap: var(--space-2); }

.mobile-nav__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,.8);
  font-size: var(--fs-sm);
  font-weight: 500;
}

/* ============================================================
   RESPONSIVE — SHOW BURGER
============================================================ */
@media (max-width: 1023px) {
  .site-nav,
  .site-header__cta { display: none; }
  .burger { display: flex; }
}

/* ============================================================
   v1.1.0 — Suppression mega-menu, amélioration flat nav
============================================================ */
.mega-menu,
.mega-menu__inner,
.mega-menu__grid,
.mega-menu__footer,
.mega-menu__item,
.site-nav__item--mega,
.site-nav__chevron { display: none !important; }

/* Header webp logo */
.site-header__logo-img { object-fit: contain; }