/* Conica Studio — responsive nav (mobile menu)
   Augments the existing .nav / .nav-inner / .nav-items markup.
   Hamburger button is injected by nav-mobile.js so case-study pages
   don't need any markup edits. */

/* Hide the hamburger on desktop */
.nav-toggle {
  display: none;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
  padding: 6px;
  margin: -6px;
  cursor: pointer;
  color: var(--ink, #18170f);
  line-height: 0;
}
.nav-toggle:focus-visible {
  outline: 1px solid var(--ink, #18170f);
  outline-offset: 4px;
}
.nav-toggle .nt-bar {
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
  transition: transform 280ms ease, opacity 200ms ease;
}
.nav-toggle .nt-bar + .nt-bar { margin-top: 6px; }

/* Open state — morph into an X */
.nav.open .nav-toggle .nt-bar:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}
.nav.open .nav-toggle .nt-bar:nth-child(2) {
  opacity: 0;
}
.nav.open .nav-toggle .nt-bar:nth-child(3) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile breakpoint */
@media (max-width: 720px) {
  .nav-inner {
    padding: 18px var(--page-margin);
  }
  .nav-toggle { display: inline-block; }

  /* Collapse the items into a slide-down panel */
  .nav-items {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--paper, #f4f1ea);
    border-bottom: var(--rule, 1px solid #18170f);
    padding: 8px var(--page-margin) 24px;
    /* Hide off-screen by default */
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 280ms ease, opacity 220ms ease;
  }
  .nav { position: sticky; }       /* ensure stacking context for absolute panel */
  .nav-inner { position: relative; }

  .nav-items a {
    width: 100%;
    padding: 18px 0;
    font-size: 13px;
    letter-spacing: 0.28em;
    border-bottom: 1px solid rgba(24, 23, 15, 0.12) !important;
  }
  .nav-items a:last-child { border-bottom: 0 !important; }
  .nav-items a.active { border-bottom-color: rgba(24, 23, 15, 0.12) !important; }
  /* The pill loses its outlined look in the stacked menu — make it plain */
  .nav-items a.pill {
    border: 0;
    border-bottom: 1px solid rgba(24, 23, 15, 0.12) !important;
    padding: 18px 0;
    background: transparent;
    color: var(--ink, #18170f);
  }

  /* Open state */
  .nav.open .nav-items {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  /* Lock body scroll while menu is open (script also sets overflow) */
  body.nav-open { overflow: hidden; }
}