/* ===============================
   Pedagogy of Humanity — Nav Bar
   =============================== */

/* Ensure header + nav always span full width */
header {
  width: 100%;
  margin: 0;
  padding: 0;
}
.site-nav {
  width: 100%; /* bulletproof full-width */
}

/* Main nav container (desktop defaults) */
.site-nav {
  background: #2c7a7b;               /* brand teal */
  position: sticky;
  top: 0;
  z-index: 1000;

  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 16px 0;
  margin: 0;
}

/* Links */
.site-nav a {
  color: #d6dce1;                    /* unify link color */
  text-decoration: none;
  font-size: 18px;
  font-family: Garamond, serif;
  line-height: 1.2;
  transition: color .3s ease, background-color .3s ease;
}

/* Interactive states */
.site-nav a:hover { color: #d6dce1; background: rgba(255,255,255,.08); }
.site-nav a:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}
.site-nav a[aria-current="page"] {
  color: #d6dce1;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Layout for items (icon + label on one line) */
.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;      /* nice tap target */
  border-radius: 8px;
}

/* ICONS: clamp sizes for <img> or inline <svg> */
.site-nav img,
.site-nav .icon,
.site-nav svg {
  width: 22px;
  height: 22px;
  max-width: 22px !important;
  max-height: 22px !important;
  flex: 0 0 22px;
  display: inline-block;
  vertical-align: middle;
  object-fit: contain;
}
.site-nav svg[width]  { width: 22px !important; }
.site-nav svg[height] { height: 22px !important; }
/* If your icons need to inherit color */
.site-nav svg { fill: #d6dce1 !important; stroke: #d6dce1 !important; }

/* <details>/<summary> (dropdown parents) */
.site-nav summary.nav-item {
  color: #d6dce1;
  font-size: 18px;
  font-family: Garamond, serif;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none; /* remove default marker in some browsers */
  border-radius: 8px;
  padding: 8px 10px;
}
.site-nav summary.nav-item:hover,
.site-nav details[open] > summary.nav-item {
  background: rgba(255,255,255,.08);
  color: #d6dce1;
}
/* Hide native disclosure markers */
.site-nav summary.nav-item::-webkit-details-marker { display: none; }
.site-nav summary.nav-item::marker { content: ""; }

/* Submenus (desktop pop-in feel but inline container) */
.site-nav .submenu {
  position: static;
  display: none;            /* hidden until parent opens */
  margin: 6px 0 0 0;
  padding: 0;
  background: transparent;
  border: 0;
}
.site-nav .nav-group[open] > .submenu { display: block; }
.site-nav .submenu a {
  display: inline-block;
  padding: 6px 8px;
  border-radius: 6px;
}

/* Reduced motion respect */
@media (prefers-reduced-motion: reduce) {
  .site-nav a,
  .site-nav summary.nav-item,
  .hamburger-inner,
  .hamburger-inner::before,
  .hamburger-inner::after {
    transition: none;
  }
}

/* -------------------------------
   MOBILE HAMBURGER NAV (CSS-only)
   ------------------------------- */
@media (max-width: 700px) {
  /* Sticky toggle bar */
  .hamburger {
    display: block;
    position: sticky;
    top: 0;
    z-index: 1100;
    background: #2c7a7b;
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255,255,255,.15);
  }
  .hamburger-btn {
    list-style: none;
    display: flex; align-items: center; gap: 10px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    color: #d6dce1;
    font-family: Garamond, serif;
    font-size: 18px;
  }
  .hamburger-btn::-webkit-details-marker { display: none; }
  .hamburger-btn::marker { content: ""; }

  /* Hamburger icon (3 bars → X when open) */
  .hamburger-box { position: relative; width: 24px; height: 16px; }
  .hamburger-inner,
  .hamburger-inner::before,
  .hamburger-inner::after {
    content: "";
    position: absolute; left: 0;
    width: 24px; height: 2px; border-radius: 2px;
    background: #d6dce1;
    transition: transform .2s ease, opacity .2s ease;
  }
  .hamburger-inner { top: 7px; }
  .hamburger-inner::before { top: -6px; }
  .hamburger-inner::after  { top: 6px; }
  .hamburger[open] .hamburger-inner { transform: rotate(45deg); }
  .hamburger[open] .hamburger-inner::before { opacity: 0; }
  .hamburger[open] .hamburger-inner::after  { transform: rotate(-90deg); top: 0; }

  /* Hide desktop nav on mobile until opened */
  .site-nav { display: none !important; }

  /* Show nav when the hamburger <details> is open */
  /* Use general sibling (~) so it works even if something sits between them */
  .hamburger[open] ~ .site-nav {
    display: flex !important;
    flex-direction: column;
    gap: 6px;
    padding: 10px 8px;
    background: #2c7a7b;       /* match bar */
    border-top: 1px solid rgba(255,255,255,.15);

    /* override desktop sticky so it flows under the toggle */
    position: static;
    top: auto;
  }

  /* Make each top-level item a comfy full-width row */
  .site-nav > .nav-item,
  .site-nav > .nav-group > summary.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 12px;
    border-radius: 10px;
    background: rgba(255,255,255,.08);
    font-size: 18px; line-height: 1.3;
  }

  /* Submenus: indent + block items */
  .site-nav .submenu {
    position: static;
    display: none;
    margin: 6px 0 2px 38px;     /* indent under its parent */
    padding: 6px 8px;
    background: transparent; border: 0;
  }
  .site-nav .nav-group[open] > .submenu { display: block; }
  .site-nav .submenu a {
    display: block; padding: 10px 8px; border-radius: 8px;
  }
  .site-nav .submenu a:hover { background: rgba(255,255,255,.08); }

  /* Add a caret to summaries (rotates when open) */
  .site-nav summary.nav-item::after {
    content: "▸"; margin-left: auto; transform: rotate(0deg);
    transition: transform .18s ease; color: currentColor;
  }
  .site-nav .nav-group[open] > summary.nav-item::after { transform: rotate(90deg); }

  /* Prevent sideways scroll on tiny screens */
  .site-nav { overflow-x: hidden; }
}

/* Desktop: hide hamburger, show normal nav */
@media (min-width: 701px) {
  .hamburger { display: none; }
  .site-nav { display: flex; }
}

/* Focus-visible for accessibility */
.hamburger-btn:focus-visible,
.site-nav a:focus-visible,
.site-nav summary.nav-item:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}

/* Helper: avoid sticky nav covering in-page anchors elsewhere */
.section[id] { scroll-margin-top: 90px; }