/* ==========================================================================

   6. Navbar

   ========================================================================== */

#navbar {
  height: var(--navbar-height);

  /*
  |--------------------------------------------------------------------------
  | État initial — tout en haut de la page
  |--------------------------------------------------------------------------
  |
  | Navbar totalement transparente :
  | - aucun fond
  | - aucun trait inférieur
  | - aucune ombre
  | - aucun blur
  |
  */

  border-bottom: 0;

  background: transparent;

  box-shadow: none;

  backdrop-filter: none;

  -webkit-backdrop-filter: none;

  transition:
    height var(--transition-slow),
    background-color var(--transition-slow),
    border-color var(--transition-slow),
    box-shadow var(--transition-slow),
    backdrop-filter var(--transition-slow);
}

#navbar nav {
  height: 100%;
}

#navbar nav > div {
  height: 100%;

  transition:
    height var(--transition-slow),
    padding var(--transition-slow);
}

/* ==========================================================================
   Navbar après scroll
   ========================================================================== */

#navbar.navbar-scrolled {
  height: var(--navbar-height-scrolled);

  border-bottom: 1px solid var(--color-border);

  background: rgba(10, 14, 19, 0.86);

  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);

  backdrop-filter: blur(18px);

  -webkit-backdrop-filter: blur(18px);
}

/* ==========================================================================
   Logo
   ========================================================================== */

#navbar img {
  object-fit: contain;

  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.38));
}

#navbar.navbar-scrolled img {
  height: 52px;
}

/* ==========================================================================
   Liens navigation
   ========================================================================== */

.nav-link {
  position: relative;

  display: inline-flex;

  align-items: center;

  padding-block: 12px;

  color: rgba(255, 255, 255, 0.76);

  font-size: 0.92rem;

  font-weight: 700;

  letter-spacing: 0.01em;

  transition:
    color var(--transition-base),
    transform var(--transition-base);
}

.nav-link::after {
  content: "";

  position: absolute;

  right: 0;

  bottom: 6px;

  left: 0;

  height: 2px;

  border-radius: 999px;

  background: linear-gradient(
    90deg,
    var(--color-fire-light),
    var(--color-fire)
  );

  transform: scaleX(0);

  transform-origin: center;

  transition: transform var(--transition-base);
}

.nav-link:hover,
.nav-link.is-active {
  color: #ffffff;
}

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

.nav-link:hover {
  transform: translateY(-1px);
}

/* ==========================================================================

   7. Bouton devis de la navbar

   ========================================================================== */

#navbar a[href$="#contact"].btn-primary {
  position: relative;

  display: inline-flex;

  align-items: center;

  justify-content: center;

  min-width: 170px;

  overflow: hidden;

  border: 1px solid rgba(255, 255, 255, 0.14);

  background: linear-gradient(
    135deg,
    var(--color-fire-light),
    var(--color-fire),
    var(--color-ember)
  );

  box-shadow: 0 12px 34px rgba(231, 111, 29, 0.24);

  text-align: center;

  line-height: 1.25;

  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

#navbar a[href$="#contact"].btn-primary::before {
  content: "";

  position: absolute;

  top: -120%;

  left: -45%;

  width: 35%;

  height: 340%;

  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.38),
    transparent
  );

  transform: rotate(22deg);

  transition: left 700ms ease;
}

#navbar a[href$="#contact"].btn-primary:hover::before {
  left: 125%;
}

#navbar a[href$="#contact"].btn-primary:hover {
  transform: translateY(-2px) scale(1.03);

  box-shadow: 0 18px 42px rgba(231, 111, 29, 0.34);
}

/* ==========================================================================

   8. Menu mobile

   ========================================================================== */

#mobileButton {
  position: relative;

  z-index: 60;

  display: inline-flex;

  align-items: center;

  justify-content: center;

  width: 48px;

  height: 48px;

  border: 1px solid var(--color-border);

  border-radius: 50%;

  color: #ffffff;

  background: rgba(255, 255, 255, 0.05);

  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-base);
}

#mobileButton:hover {
  border-color: rgba(255, 145, 77, 0.55);

  background: rgba(231, 111, 29, 0.12);

  transform: scale(1.04);
}

/* ==========================================================================
   Menu mobile plein écran
   ========================================================================== */

.mobile-menu {
  position: fixed;

  inset: 0;

  z-index: 55;

  display: flex;

  align-items: center;

  justify-content: center;

  padding: 120px 24px 48px;

  visibility: hidden;

  opacity: 0;

  background:
    radial-gradient(
      circle at 50% 18%,
      rgba(231, 111, 29, 0.18),
      transparent 34%
    ),
    rgba(8, 11, 15, 0.98);

  backdrop-filter: blur(18px);

  -webkit-backdrop-filter: blur(18px);

  transition:
    opacity var(--transition-slow),
    visibility var(--transition-slow);
}

.mobile-menu.is-open {
  visibility: visible;

  opacity: 1;
}

.mobile-menu-inner {
  width: min(100%, 520px);
}

/* ==========================================================================
   Liens menu mobile
   ========================================================================== */

.mobile-menu-link {
  display: flex;

  align-items: center;

  justify-content: space-between;

  padding: 20px 0;

  border-bottom: 1px solid var(--color-border);

  color: rgba(255, 255, 255, 0.82);

  font-size: clamp(1.5rem, 7vw, 2.5rem);

  font-weight: 800;

  letter-spacing: -0.04em;

  transform: translateY(18px);

  opacity: 0;

  transition:
    color var(--transition-base),
    transform var(--transition-slow),
    opacity var(--transition-slow);
}

.mobile-menu.is-open .mobile-menu-link {
  transform: translateY(0);

  opacity: 1;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(1) {
  transition-delay: 60ms;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(2) {
  transition-delay: 100ms;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(3) {
  transition-delay: 140ms;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(4) {
  transition-delay: 180ms;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(5) {
  transition-delay: 220ms;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(6) {
  transition-delay: 260ms;
}

.mobile-menu.is-open .mobile-menu-link:nth-child(7) {
  transition-delay: 300ms;
}

.mobile-menu-link:hover {
  color: var(--color-fire-light);
}

/* ==========================================================================

   9. Affichage desktop / mobile / tablette

   Desktop complet uniquement à partir de 1280px

   ========================================================================== */

/* Desktop */

@media (min-width: 1280px) {
  #mobileButton,
  #mobileMenu {
    display: none !important;
  }
}

/* Mobile + tablette */

@media (max-width: 1279px) {
  #mobileButton {
    display: flex !important;

    align-items: center;

    justify-content: center;
  }
}

/* ==========================================================================

   10. Instagram

   ========================================================================== */

.nav-instagram {
  display: inline-flex;

  align-items: center;

  justify-content: center;

  width: 42px;

  height: 42px;

  border: 1px solid rgba(255, 255, 255, 0.1);

  border-radius: 999px;

  color: rgba(255, 255, 255, 0.85);

  transition:
    color 0.3s ease,
    border-color 0.3s ease,
    background-color 0.3s ease,
    transform 0.3s ease;
}

.nav-instagram:hover {
  color: #e76f1d;

  border-color: rgba(231, 111, 29, 0.45);

  background: rgba(231, 111, 29, 0.08);

  transform: translateY(-2px);
}