/* Navigation principale — compacte, accessible et pensée desktop + mobile */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: background .22s ease, border-color .22s ease, backdrop-filter .22s ease, box-shadow .22s ease;
}

.site-header.is-scrolled,
.site-header:has(.nav__group.is-open) {
  background: rgba(11, 16, 32, .90);
  border-bottom-color: var(--line);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 32px rgba(0, 0, 0, .12);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(14px, 2vw, 26px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.brand__text {
  display: grid;
  line-height: 1.05;
}

.brand__text strong {
  font-size: 1.03rem;
  letter-spacing: .05em;
}

.brand__text small {
  margin-top: 4px;
  color: var(--muted-2);
  font: 500 .57rem/1.2 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 0;
}

.nav__group {
  position: relative;
}

.nav__group-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: .87rem;
  font-weight: 700;
  line-height: 1;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}

.nav__group-toggle:hover,
.nav__group-toggle:focus-visible,
.nav__group.is-open > .nav__group-toggle,
.nav__group.has-active-child > .nav__group-toggle {
  color: var(--ink);
  background: rgba(255, 255, 255, .035);
  border-color: var(--line);
}

.nav__group-toggle:focus-visible,
.nav__toggle:focus-visible,
.nav__submenu a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.nav__chevron {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform .2s ease;
}

.nav__group.is-open .nav__chevron {
  transform: translateY(2px) rotate(225deg);
}

.nav__submenu {
  position: absolute;
  top: calc(100% + 11px);
  left: 0;
  width: 324px;
  padding-top: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-6px) scale(.985);
  transform-origin: top left;
  transition: opacity .16s ease, transform .18s ease, visibility 0s linear .18s;
}

.nav__submenu--right {
  right: 0;
  left: auto;
  transform-origin: top right;
}

.nav__group.is-open .nav__submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
  transition-delay: 0s;
}

.nav__submenu-inner {
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(15, 25, 51, .97);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .32);
  backdrop-filter: blur(18px);
}

.nav__submenu a {
  display: grid;
  gap: 2px;
  padding: 11px 12px;
  border-radius: 11px;
  transition: background .16s ease, transform .16s ease;
}

.nav__submenu a:hover,
.nav__submenu a.is-current,
.nav__submenu a.is-active {
  background: linear-gradient(100deg, rgba(0, 194, 255, .08), rgba(122, 92, 255, .08));
}

.nav__submenu a:hover {
  transform: translateX(2px);
}

.nav__submenu a span {
  color: var(--ink);
  font-size: .88rem;
  font-weight: 750;
  line-height: 1.3;
}

.nav__submenu a small {
  color: var(--muted-2);
  font-size: .73rem;
  font-weight: 520;
  line-height: 1.4;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}


.nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(17, 27, 56, .88);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 930px) {

  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    width: min(90vw, 390px);
    padding: 18px 18px 28px;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 7px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: rgba(11, 16, 32, .985);
    border-left: 1px solid var(--line);
    box-shadow: -22px 0 60px rgba(0, 0, 0, .25);
    transform: translateX(102%);
    visibility: hidden;
    transition: transform .25s cubic-bezier(.2,.8,.2,1), visibility 0s linear .25s;
  }

  .nav__links.is-open {
    transform: translateX(0);
    visibility: visible;
    transition-delay: 0s;
  }

  .nav__group {
    border: 1px solid rgba(122, 92, 255, .12);
    border-radius: 14px;
    background: rgba(255, 255, 255, .018);
    overflow: hidden;
  }

  .nav__group-toggle {
    width: 100%;
    min-height: 50px;
    justify-content: space-between;
    padding: 13px 14px;
    border: 0;
    border-radius: 0;
    font-size: .96rem;
  }

  .nav__group-toggle:hover,
  .nav__group-toggle:focus-visible,
  .nav__group.is-open > .nav__group-toggle,
  .nav__group.has-active-child > .nav__group-toggle {
    border-color: transparent;
    background: rgba(255, 255, 255, .035);
  }

  .nav__submenu,
  .nav__submenu--right {
    position: static;
    width: auto;
    padding: 0;
    display: grid;
    grid-template-rows: 0fr;
    opacity: 1;
    visibility: hidden;
    pointer-events: none;
    transform: none;
    transition: grid-template-rows .24s ease, visibility 0s linear .24s;
  }

  .nav__group.is-open .nav__submenu {
    grid-template-rows: 1fr;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition-delay: 0s;
  }

  .nav__submenu-inner {
    min-height: 0;
    overflow: hidden;
    padding: 0 8px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
  }

  .nav__group.is-open .nav__submenu-inner {
    padding-bottom: 8px;
  }

  .nav__submenu a {
    gap: 3px;
    padding: 11px 12px;
  }

  .nav__submenu a:hover {
    transform: none;
  }

  .nav__submenu a small {
    font-size: .72rem;
  }
}

@media (max-width: 480px) {
  .brand__text small {
    display: none;
  }

  .nav {
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .nav__links,
  .nav__submenu,
  .nav__chevron,
  .nav__submenu a,
  .nav__toggle span {
    transition: none !important;
  }
}