/* ============================================================
   Layout — site chrome rendered by <site-nav> / <site-footer>.
   ============================================================ */

/* -- Nav --
   The custom element is the sticky box and reserves its height up front,
   so the page doesn't shift when the module upgrades it. */
site-nav {
  display: block;
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(13, 13, 13, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--gutter);
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  --underline-inset: 14px;
  --underline-bottom: 5px;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 14px;
}

.nav-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 4px;
}

.nav-icon {
  display: flex;
  align-items: center;
  padding: 6px;
  border-radius: var(--radius);
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.nav-icon:hover { color: var(--text); }

.nav-socials {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Desktop shows icons only; the label stays for screen readers. */
.nav-icon-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.nav-link-arrow { display: none; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.nav-toggle-open,
.nav-toggle-close { display: flex; }

.nav-toggle-close { display: none; }

.site-nav--open .nav-toggle {
  background: var(--bg-card);
  border-color: var(--border-hover);
}

.site-nav--open .nav-toggle-open { display: none; }
.site-nav--open .nav-toggle-close { display: flex; }

/* -- Phones: the menu is a full-screen sheet under the bar -- */
@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  /* Solid bar while the sheet is open so it reads as one surface. */
  site-nav.is-menu-open { background: var(--bg); }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: calc(100vh - var(--nav-height));
    height: calc(100dvh - var(--nav-height));
    padding: 12px var(--gutter) calc(24px + env(safe-area-inset-bottom, 0px));
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--bg);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0s linear 0.2s;
  }

  .site-nav--open .nav-menu {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.2s ease;
  }

  .nav-link {
    justify-content: space-between;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.03em;
  }

  .nav-link::before,
  .nav-link::after { display: none; }

  .nav-link-arrow {
    display: flex;
    color: var(--text-muted);
    transition: transform 0.2s ease, color 0.15s;
  }

  .nav-link:active .nav-link-arrow { transform: translateX(3px); }

  /* The current page gets a dot, the others stay muted. */
  .site-nav .nav-link.is-active::before {
    content: "";
    display: block;
    position: static;
    width: 6px;
    height: 6px;
    margin-right: 12px;
    background: var(--text);
    border-radius: 50%;
    order: -1;
  }

  .nav-link.is-active { justify-content: flex-start; }
  .nav-link.is-active .nav-link-arrow { margin-left: auto; }

  .nav-divider { display: none; }

  .nav-socials {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: auto;
    padding-top: 32px;
  }

  .nav-icon {
    justify-content: center;
    gap: 10px;
    padding: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
  }

  .nav-icon-label {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
  }

  /* Items rise in one after another as the sheet opens. */
  .site-nav--open .nav-link,
  .site-nav--open .nav-socials {
    animation: nav-item-in 0.35s ease both;
    animation-delay: calc(var(--i, 0) * 40ms + 40ms);
  }
}

@keyframes nav-item-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav--open .nav-link,
  .site-nav--open .nav-socials { animation: none; }
}

html.nav-locked { overflow: hidden; }


/* -- Footer -- */
site-footer { display: block; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px var(--gutter) 28px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  gap: 120px;
  margin-bottom: 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* The brand name and the column headings share one style. */
.footer-logo,
.footer-col-label {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.footer-tagline { font-size: 0.78rem; }

.footer-cols {
  display: flex;
  gap: 64px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-col-label { margin-bottom: 4px; }

.footer-col .link-underline {
  gap: 8px;
  font-size: 0.82rem;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: 0.75rem;
  color: var(--text-subtle);
}

@media (max-width: 720px) {
  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }
  .footer-cols { gap: 48px; }
}