/* header.css - Header: logo, navigation, language switch and theme button (+ header breakpoints). */

header {
  position: sticky;
  top: env(safe-area-inset-top,0px);
  z-index: 10;
  padding: 1rem 0;
  background: linear-gradient(var(--bg) 70%,transparent);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 600;
  font-size: 1.25rem;
  min-height: 44px;
}

.logo i {
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: radial-gradient(circle,#fff 0 12%,#5cc49b 40%,transparent 70%);
  box-shadow: 0 0 18px #5cc49b;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
  list-style: none;
  margin: 0;
  padding: .375rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--glass);
  backdrop-filter: blur(12px);
}

nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 1rem;
  border-radius: 11px;
  font-size: .9rem;
  color: var(--mute);
  transition: .2s;
}

nav a:hover,nav a[aria-current] {
  background: var(--navon);
  color: var(--ink);
}

nav a[aria-current]::before {
  content: "";
  width: .45rem;
  height: .45rem;
  margin-right: .5rem;
  border-radius: 50%;
  background: var(--or);
}

.tools {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
}

.lang {
  position: relative;
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  min-height: 44px;
  padding: 3px;
  border: 1px solid var(--bd);
  border-radius: 14px;
  background: var(--glass);
  backdrop-filter: blur(12px);
}

.lang::before {
  content: "";
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: 3px;
  width: calc(50% - 3px);
  border-radius: 11px;
  background: linear-gradient(180deg,#86d9b8,#46ad85);
  transition: transform .3s cubic-bezier(.4,.1,.2,1);
}

:root[data-lang="en"] .lang::before {
  transform: translateX(100%);
}

.lang button {
  position: relative;
  z-index: 1;
  min-width: 2.9rem;
  border: 0;
  border-radius: 11px;
  background: none;
  color: var(--ink);
  font-family: inherit;
  font-weight: 600;
  font-size: .85rem;
  letter-spacing: .04em;
  cursor: pointer;
  transition: color .2s;
}

.lang button[aria-pressed="true"] {
  color: #06140e;
}

.nav nav a {
  padding: 0 .7rem;
  font-size: .875rem;
}

.nav .tools .btn {
  padding: .7rem 1.1rem;
}

.nav .tools {
  gap: .6rem;
}

@media (min-width:1241px) {
  .nav,.tools {
    flex-wrap: nowrap;
  }
}

@media (max-width:1240px) {
  header {
    position: static;
  }
  .nav nav {
    order: 3;
    width: 100%;
  }
  .nav nav ul {
    justify-content: center;
  }
}