/* Shared by every page: header, menu, buttons, footer. Tokens live in styles.css. */
.masthead {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 64px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; flex-shrink: 0; }
.brand img { width: 32px; height: 32px; object-fit: contain; transition: transform .35s cubic-bezier(.2, .8, .2, 1); }
.brand:hover img { transform: rotate(-8deg) scale(1.06); }
.brand span { font-weight: 800; font-size: 21px; letter-spacing: -.04em; }
.brand sup { font: 600 10px var(--mono); letter-spacing: .04em; color: var(--c-word); margin-left: 2px; vertical-align: super; }

.mainnav { display: flex; align-items: center; gap: 2px; }
.mainnav a {
  position: relative;
  color: var(--muted);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 999px;
  transition: color .2s, background .2s;
}
.mainnav a:hover { color: var(--fg); background: color-mix(in srgb, var(--fg) 6%, transparent); }
.mainnav a[aria-current="page"] { color: var(--fg); }
.mainnav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--fg);
  transform: translateX(-50%);
}

.mast-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  border-radius: 999px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--fg);
  cursor: pointer;
  transition: transform .2s cubic-bezier(.2, .8, .2, 1), box-shadow .2s, background .2s, border-color .2s;
}
.btn:hover { border-color: color-mix(in srgb, var(--fg) 30%, var(--line)); }
.btn.primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 22px -14px rgba(0, 0, 0, .45); }
.btn.big { font-size: 16px; padding: 13px 24px; }
.btn .arrow { transition: transform .2s cubic-bezier(.2, .8, .2, 1); }
.btn:hover .arrow { transform: translateX(3px); }

/* Mobile menu: a details element, no script needed. */
.menu { display: none; position: relative; }
.menu summary {
  list-style: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--panel);
}
.menu summary::-webkit-details-marker { display: none; }
.menu summary span, .menu summary span::before, .menu summary span::after {
  display: block;
  width: 16px;
  height: 1.8px;
  border-radius: 2px;
  background: var(--fg);
  transition: transform .25s, opacity .2s;
}
.menu summary span { position: relative; }
.menu summary span::before, .menu summary span::after { content: ""; position: absolute; left: 0; }
.menu summary span::before { top: -5px; }
.menu summary span::after { top: 5px; }
.menu[open] summary span { background: transparent; }
.menu[open] summary span::before { transform: translateY(5px) rotate(45deg); }
.menu[open] summary span::after { transform: translateY(-5px) rotate(-45deg); }
.menu nav {
  position: absolute;
  right: 0;
  top: 50px;
  width: min(280px, calc(100vw - 32px));
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, .35);
  animation: drop .22s cubic-bezier(.2, .8, .2, 1);
}
.menu nav a { color: var(--fg); text-decoration: none; padding: 12px 14px; border-radius: 12px; font-weight: 500; }
.menu nav a:hover { background: color-mix(in srgb, var(--fg) 6%, transparent); }
.menu nav .btn { justify-content: center; margin-top: 6px; }
@keyframes drop { from { opacity: 0; transform: translateY(-6px) scale(.98); } }

.site-foot {
  max-width: 1320px;
  margin: 0 auto;
  padding: 32px 24px 44px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}
.site-foot a { color: inherit; }

@media (max-width: 760px) {
  .masthead { gap: 12px; padding: 0 16px; }
  .mainnav, .mast-actions .hide-sm { display: none; }
  .menu { display: block; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* The window that opens when you fire a 3D object. */
.fire-dialog {
  width: min(460px, calc(100vw - 32px));
  padding: 26px 24px 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  color: var(--fg);
  box-shadow: 0 40px 100px -30px rgba(10, 8, 40, .55);
}
.fire-dialog[open] { animation: drop .25s cubic-bezier(.2, .8, .2, 1); }
.fire-dialog::backdrop { background: rgba(24, 24, 27, .4); backdrop-filter: blur(6px); }
.fd-close { position: absolute; top: 12px; right: 12px; margin: 0; }
.fd-close button { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line); background: var(--bg); color: var(--muted); font-size: 18px; cursor: pointer; }
.fd-kicker { margin: 0; font: 600 11.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--c-word); }
.fire-dialog h3 { margin: 4px 0 2px; font-size: 24px; letter-spacing: -.03em; }
.fd-meta { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
.fd-choices { display: flex; flex-direction: column; gap: 8px; }
.fd-choice {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  width: 100%; text-align: left; font: inherit; color: var(--fg);
  padding: 13px 16px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--bg); cursor: pointer;
  transition: border-color .2s, transform .15s, background .2s;
}
.fd-choice:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.fd-choice:active { transform: scale(.99); }
.fd-choice b { font-size: 15px; }
.fd-choice span { font-size: 13px; color: var(--muted); }
.fd-choice.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.fd-choice.primary span { color: color-mix(in srgb, var(--on-accent) 72%, transparent); }

.view-dialog { width: 100vw; height: 100dvh; max-width: none; max-height: none; margin: 0; padding: 0; border: 0; background: #0b0b18; }
.view-dialog::backdrop { background: #0b0b18; }
.view-dialog iframe { width: 100%; height: 100%; border: 0; display: block; }
.view-dialog form { position: absolute; top: 14px; right: 14px; margin: 0; }

/* Light/dark switch in the header. */
.theme-toggle {
  width: 38px; height: 38px; padding: 0; border-radius: 50%;
  display: grid; place-items: center; font-size: 16px; line-height: 1;
  border: 1px solid var(--line); background: var(--panel); color: var(--fg); cursor: pointer;
}
.theme-toggle:hover { border-color: color-mix(in srgb, var(--fg) 30%, var(--line)); }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: inline; }
.menu nav .menu-theme {
  width: auto; height: auto; border: 0; background: none; border-radius: 12px;
  display: block; text-align: left; padding: 12px 14px; font: inherit; font-weight: 500;
}
.menu nav .menu-theme:hover { background: color-mix(in srgb, var(--fg) 6%, transparent); }
@media (max-width: 760px) { .mast-actions .theme-toggle { display: none; } }