/* Shared navigation contract for every page.
   The bar is one fixed-height row. At 900px and below, links move into an
   absolutely positioned menu so neither auth state can wrap or resize it. */
:root{--nav-height:65px}

.nav{
  position:sticky;
  top:0;
  z-index:100;
  box-sizing:border-box;
  width:100%;
  height:calc(var(--nav-height) + env(safe-area-inset-top));
  min-height:calc(var(--nav-height) + env(safe-area-inset-top));
  max-height:calc(var(--nav-height) + env(safe-area-inset-top));
  padding-top:env(safe-area-inset-top);
  padding-right:max(2.5rem, env(safe-area-inset-right));
  padding-left:max(2.5rem, env(safe-area-inset-left));
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  overflow:visible;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
}

.logo{
  flex:0 0 auto;
  font-family:var(--font-display);
  font-size:1.5rem;
  line-height:1;
  letter-spacing:-.01em;
  white-space:nowrap;
  cursor:pointer;
  text-decoration:none;
  color:var(--ink);
}
.logo span{color:var(--amber)}

.nav-toggle{
  display:none;
  flex:0 0 44px;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  padding:0;
  margin-left:auto;
  color:var(--ink);
  background:none;
  border:0;
  cursor:pointer;
  touch-action:manipulation;
}
.nav-toggle svg{display:block;pointer-events:none}
.nav-toggle:focus-visible{outline:2px solid var(--amber);outline-offset:2px}

.nav-links{
  min-width:0;
  display:flex;
  align-items:center;
  flex:0 1 auto;
  flex-wrap:nowrap;
  gap:clamp(1rem, 2.3vw, 2rem);
}
.nav-link{
  min-width:0;
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-sizing:border-box;
  padding:.25rem 0;
  overflow:hidden;
  font-family:var(--font-ui);
  font-size:.85rem;
  font-weight:500;
  line-height:1.2;
  text-transform:uppercase;
  letter-spacing:.08em;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--muted);
  background:none;
  border:0;
  cursor:pointer;
  text-decoration:none;
  transition:color .15s ease;
}
.nav-link:hover,.nav-link.active{color:var(--ink)}
.nav-link:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
.nav-user{gap:.4rem}
.nav-user-icon{display:none;flex:0 0 auto}

@media (max-width:900px){
  .nav{
    padding-right:max(1.5rem, env(safe-area-inset-right));
    padding-left:max(1.5rem, env(safe-area-inset-left));
  }
  .nav-toggle{display:inline-flex}
  .nav-links{
    display:none;
    position:absolute;
    top:100%;
    right:0;
    left:0;
    width:100%;
    max-height:calc(100dvh - var(--nav-height) - env(safe-area-inset-top));
    flex-direction:column;
    align-items:stretch;
    flex-wrap:nowrap;
    gap:0;
    box-sizing:border-box;
    padding:.5rem max(1.5rem, env(safe-area-inset-right)) 1rem max(1.5rem, env(safe-area-inset-left));
    overflow-x:hidden;
    overflow-y:auto;
    overscroll-behavior:contain;
    background:var(--paper);
    border-bottom:1px solid var(--rule);
    box-shadow:0 8px 16px rgba(0,0,0,.08);
  }
  .nav-links.open{display:flex}
  .nav-link{
    width:100%;
    min-height:48px;
    padding:.75rem 0;
    justify-content:flex-start;
  }
}

@media (max-width:560px){
  .nav{
    padding-right:max(1rem, env(safe-area-inset-right));
    padding-left:max(1rem, env(safe-area-inset-left));
  }
  .nav-links{
    padding-right:max(1rem, env(safe-area-inset-right));
    padding-left:max(1rem, env(safe-area-inset-left));
  }
  .logo{font-size:1.25rem}
}