/*
 * menu.css — hamburger overlay + site mark. Tokens from _custom_css.html.
 */

/* ── Site mark (top-left, links to /). Theme-aware. ────────────────────── */
.site-mark {
  position: fixed;
  top: var(--sp-4);
  left: var(--sp-5);
  width: 28px;
  height: 28px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  opacity: 0.78;
  transition: opacity 180ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}
.site-mark:hover,
.site-mark:focus-visible {
  opacity: 1;
  transform: scale(1.06);
  outline: none;
}
.site-mark:focus-visible {
  box-shadow: 0 0 0 2px var(--accent);
}

.site-mark__glyph {
  display: block;
  width: 28px;
  height: 28px;
  background-image: url(/img/bauerceptor-light.svg);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

/* Dark mode via the JS toggle */
html.dark .site-mark__glyph {
  background-image: url(/img/bauerceptor-dark.svg);
}

/* Dark mode via system preference, only when no explicit override is set */
@media (prefers-color-scheme: dark) {
  html:not(.light) .site-mark__glyph {
    background-image: url(/img/bauerceptor-dark.svg);
  }
}

@media (max-width: 480px) {
  .site-mark {
    width: 24px;
    height: 24px;
    top: var(--sp-3);
    left: var(--sp-4);
  }
  .site-mark__glyph { width: 24px; height: 24px; }
}


.menu-wrap {
  position: fixed;
  top: var(--sp-4);
  right: var(--sp-5);
  z-index: 1000;
}

.menu-wrap .toggler {
  position: absolute;
  top: 0; right: 0;
  width: 44px; height: 44px;
  opacity: 0;
  cursor: pointer;
  z-index: 1002;
  -webkit-touch-callout: none;
}

/* Hamburger icon — typographic ≡ feel, not chrome-rich button */
.menu-wrap .hamburger {
  position: relative;
  width: 36px; height: 36px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  transition: border-color 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-wrap:hover .hamburger { border-color: var(--accent); }

.menu-wrap .hamburger > div {
  position: relative;
  width: 18px; height: 1px;
  background: var(--fg);
  transition: all 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-wrap .hamburger > div::before,
.menu-wrap .hamburger > div::after {
  content: '';
  position: absolute;
  width: 100%; height: 1px;
  background: var(--fg);
  transition: all 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-wrap .hamburger > div::before { top: -6px; }
.menu-wrap .hamburger > div::after  { top:  6px; }

.menu-wrap .toggler:checked + .hamburger > div { background: transparent; }
.menu-wrap .toggler:checked + .hamburger > div::before {
  transform: rotate(45deg) translate(4px, 4px);
}
.menu-wrap .toggler:checked + .hamburger > div::after {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ── Overlay panel ─────────────────────────────────────────────────────── */
.menu-overlay {
  position: fixed;
  inset: 0;
  visibility: hidden;
  overflow: hidden;
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  z-index: 999;
}

.menu-overlay__panel {
  background: var(--bg);
  border-left: 1px solid var(--rule);
  width: min(440px, 100vw);
  padding: var(--sp-9) var(--sp-7) var(--sp-7);
  transform: translateX(100%);
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: flex-start;
}

.menu-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--fg);
  opacity: 0;
  transition: opacity 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-wrap .toggler:checked ~ .menu-overlay { visibility: visible; }
.menu-wrap .toggler:checked ~ .menu-overlay::before { opacity: 0.4; }
.menu-wrap .toggler:checked ~ .menu-overlay .menu-overlay__panel { transform: translateX(0); }

/* ── Panel content ─────────────────────────────────────────────────────── */
.menu-overlay__inner { width: 100%; }

.menu-overlay__site-name {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: var(--sp-8);
  text-decoration: none;
}

.menu-overlay__nav {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-7);
}

.menu-overlay__nav a {
  font-family: var(--font-serif);
  font-variation-settings: "opsz" 36;
  font-size: var(--text-xl);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
  line-height: 1.3;
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-block;
  width: max-content;
}

.menu-overlay__nav a:hover,
.menu-overlay__nav a:focus-visible { color: var(--accent); }

.menu-overlay__nav a[target="_blank"]::after {
  content: ' ↗';
  font-size: 0.7em;
  color: var(--fg-3);
}

.menu-overlay__divider {
  height: 1px;
  background: var(--rule);
  margin-bottom: var(--sp-5);
}

.menu-overlay__controls {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
}

.menu-ctrl-btn {
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: var(--sp-2) var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-2);
  cursor: pointer;
  transition: border-color 180ms cubic-bezier(0.16, 1, 0.3, 1),
              color 180ms cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.menu-ctrl-btn:hover,
.menu-ctrl-btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.menu-ctrl-btn[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

.menu-overlay__social {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.menu-overlay__social a {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-3);
  text-decoration: none;
  transition: color 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-overlay__social a:hover,
.menu-overlay__social a:focus-visible { color: var(--accent); }

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .menu-overlay__panel { padding: var(--sp-8) var(--sp-5) var(--sp-5); }
  .menu-overlay__nav a { font-size: var(--text-lg); }
}