/**
 * Full-screen site menu — identical on landing and app (no page-specific button classes)
 */

/* Lock scroll on <html> so scrollbar-gutter: stable keeps layout from shifting */
html.site-menu-open {
  overflow: hidden;
}

.site-menu[hidden] {
  display: none;
}

.site-menu {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  border: none;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans-fallback, system-ui, sans-serif);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

html.fonts-loaded .site-menu {
  font-family: var(--sans);
}

.site-menu.is-open {
  opacity: 1;
  visibility: visible;
}

/* Hamburger trigger — match landing header (right side); ignore host .iconBtn rules */
.site-menu__trigger {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font: inherit;
  line-height: 1;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.site-menu__trigger:hover {
  background: color-mix(in srgb, var(--panel2) 80%, transparent);
}

.site-menu__trigger svg {
  display: block;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* Close — same control on every page (ignore .iconBtn / .lp-iconBtn from host CSS) */
.site-menu__close {
  position: absolute;
  top: calc(12px + env(safe-area-inset-top, 0px));
  right: max(24px, env(safe-area-inset-right, 0px));
  z-index: 2;
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font: inherit;
  line-height: 1;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.site-menu__close:hover {
  background: color-mix(in srgb, var(--panel2) 80%, transparent);
}

.site-menu__close svg {
  display: block;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* Centered panel — true vertical + horizontal center on viewport */
.site-menu__inner {
  box-sizing: border-box;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  width: 100%;
  min-height: 0;
  margin: 0;
  padding: calc(56px + env(safe-area-inset-top, 0px)) max(24px, env(safe-area-inset-right, 0px))
    calc(28px + env(safe-area-inset-bottom, 0px)) max(24px, env(safe-area-inset-left, 0px));
  text-align: center;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.site-menu__brand {
  font-family: var(--font-display-fallback, "Arial Narrow", system-ui, sans-serif);
  font-size: clamp(2rem, 10vw, 2.75rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.05;
  text-decoration: none;
  color: var(--text-strong);
}

html.fonts-loaded .site-menu__brand {
  font-family: var(--font-display);
}

.site-menu__dot {
  color: var(--accent);
}

.site-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 20rem;
  margin: 0;
  padding: 0;
}

.site-menu__link {
  display: block;
  width: 100%;
  margin: 0;
  padding: 8px 12px;
  border: none;
  background: transparent;
  font-family: var(--font-display-fallback, "Arial Narrow", system-ui, sans-serif);
  font-size: clamp(1.75rem, 8vw, 2.25rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.05;
  text-decoration: none;
  color: var(--text-strong);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    color 0.15s ease;
  transition-delay: var(--site-menu-delay, 0ms);
  -webkit-tap-highlight-color: transparent;
}

html.fonts-loaded .site-menu__link {
  font-family: var(--font-display);
}

.site-menu.is-open .site-menu__link {
  opacity: 1;
  transform: translateY(0);
}

.site-menu__link:hover,
.site-menu__link:active {
  color: var(--accent);
}

.site-menu__note {
  margin: 0;
  max-width: 18rem;
  font-family: var(--font-sans-fallback, system-ui, sans-serif);
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: normal;
  text-transform: none;
  color: var(--muted);
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: 240ms;
}

html.fonts-loaded .site-menu__note {
  font-family: var(--sans);
}

.site-menu.is-open .site-menu__note {
  opacity: 1;
  transform: translateY(0);
}

.site-menu__foot {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  width: 100%;
  max-width: 20rem;
  margin: 0;
  padding: 0;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: 280ms;
}

.site-menu.is-open .site-menu__foot {
  opacity: 1;
  transform: translateY(0);
}

/* Menu actions — never use .btn / .lp-btn (app.css differs from landing.css) */
.site-menu__btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  margin: 0;
  padding: 0 22px;
  border-radius: 10px;
  border: 1px solid var(--border2);
  background: var(--panel);
  color: var(--text);
  font-family: var(--font-sans-fallback, system-ui, sans-serif);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: normal;
  text-transform: none;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

html.fonts-loaded .site-menu__btn {
  font-family: var(--sans);
}

.site-menu__btn--primary {
  background: var(--accent);
  border-color: var(--pl-plate-dim, var(--accent));
  color: #fff;
}

.site-menu__btn--primary:hover {
  background: var(--pl-plate-dim, var(--accent));
}

.site-menu__btn--ghost {
  background: color-mix(in srgb, var(--panel) 55%, transparent);
  border-color: var(--border2);
  color: var(--text-strong);
}

.site-menu__btn--ghost .ico {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.site-menu__credit {
  margin: 0;
  font-family: var(--font-sans-fallback, system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: normal;
  text-transform: none;
  color: var(--muted);
  opacity: 0;
  transition: opacity 0.35s ease 320ms;
}

html.fonts-loaded .site-menu__credit {
  font-family: var(--sans);
}

.site-menu.is-open .site-menu__credit {
  opacity: 1;
}

.site-menu__credit a {
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
}

.site-menu__credit a:hover {
  color: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  .site-menu,
  .site-menu__link,
  .site-menu__note,
  .site-menu__foot,
  .site-menu__credit {
    transition: none;
  }

  .site-menu__link,
  .site-menu__note,
  .site-menu__foot {
    opacity: 1;
    transform: none;
  }
}
