body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "cv11";
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* One fixed backdrop layer: a single soft glow and a faint dot grid that fades
   out. Being fixed, it never tiles or splits into bands on long pages. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1100px 520px at 50% -180px, var(--bg-glow), transparent 70%),
    radial-gradient(circle, var(--dot) 1px, transparent 1.2px) 0 0 / 22px 22px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 45%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 45%, transparent 100%);
}

main { flex: 1; }

.container {
  width: 100%;
  max-width: var(--page-width);
  margin-inline: auto;
  padding-inline: 24px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 600;
}
.skip-link:focus { top: 12px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--border); }

.header-inner {
  max-width: var(--page-width);
  margin-inline: auto;
  height: 100%;
  padding-inline: 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
  color: var(--text);
}
/* Logo: a speed dial on a rounded square. The square takes the theme accent,
   the dial its contrast colour. On hover the needle swings up and the filled
   arc (stroke-dashoffset: 42.41 = empty, 0 = full) follows it. */
.brand-mark { width: 30px; height: 30px; color: var(--accent); transition: transform 0.3s var(--ease-out); }
.brand-mark .bm-track,
.brand-mark .bm-arc,
.brand-mark .bm-needle { stroke: var(--accent-contrast); }
.brand-mark .bm-dot { fill: var(--accent-contrast); }
.brand-mark .bm-arc { stroke-dashoffset: 14.14; transition: stroke-dashoffset 0.5s cubic-bezier(.3, 1.4, .5, 1); }
.brand-mark .bm-needle {
  transform-box: view-box;
  transform-origin: 16px 17.5px;
  transform: rotate(45deg);
  transition: transform 0.5s cubic-bezier(.3, 1.4, .5, 1);
}
.brand:hover .brand-mark { transform: translateY(-1px); }
.brand:hover .brand-mark .bm-arc { stroke-dashoffset: 3.93; }
.brand:hover .brand-mark .bm-needle { transform: rotate(110deg); }
@media (prefers-reduced-motion: reduce) {
  .brand-mark .bm-arc,
  .brand-mark .bm-needle { transition: none; }
}
.brand-name b { color: var(--accent); font-weight: 700; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 100%;
}

.nav-item { position: relative; height: 100%; display: flex; align-items: center; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s ease, background-color 0.2s ease;
}
.nav-link:hover { color: var(--text); background: var(--surface-hover); }
.nav-link .chev { width: 14px; height: 14px; opacity: 0.6; transition: transform 0.25s var(--ease-out); }
.nav-item:hover .chev, .nav-item:focus-within .chev { transform: rotate(180deg); }
.nav-link.is-active { color: var(--text); }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: -14px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

/* Dropdown panels */
.nav-menu {
  position: absolute;
  top: calc(100% - 6px);
  left: -12px;
  width: 520px;
  padding: 10px;
  background: var(--elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.25s var(--ease-out), visibility 0.2s;
}
.nav-item:hover .nav-menu,
.nav-item:focus-within .nav-menu { opacity: 1; visibility: visible; transform: translateY(0); }

.menu-link {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}
.menu-link:hover { background: var(--surface-hover); }
/* "See all" entry: the last option in each dropdown, linking to the hub page. */
.menu-link.menu-all { background: var(--accent-soft); }
.menu-link.menu-all .menu-title { color: var(--accent); }
.menu-link.menu-all .menu-icon { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.menu-link.menu-all:hover { background: color-mix(in srgb, var(--accent) 20%, transparent); }
.menu-link:hover .menu-icon { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.menu-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.menu-icon svg { width: 17px; height: 17px; }
.menu-title { display: block; font-size: 0.9rem; font-weight: 600; color: var(--text); }
.menu-desc { display: block; font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; margin-top: 1px; }
.menu-foot {
  grid-column: 1 / -1;
  margin-top: 6px;
  padding: 10px 12px 4px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.menu-foot a { color: var(--accent); font-weight: 600; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-shrink: 0;
}
.header-cta { margin-left: 8px; }

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--text-muted);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}
.icon-btn:hover { background: var(--surface-hover); color: var(--text); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn[aria-pressed="true"] { color: var(--accent); }
.icon-btn svg { width: 19px; height: 19px; }

.nav-toggle { display: none; }

.theme-menu { position: relative; }
.theme-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: var(--elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 6px;
  display: grid;
  gap: 2px;
  min-width: 190px;
  box-shadow: var(--shadow-pop);
  animation: pop-in 0.18s var(--ease-out);
  z-index: 60;
}
.theme-dropdown-label {
  padding: 8px 10px 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

@keyframes pop-in {
  from { opacity: 0; transform: translateY(-6px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-muted);
  text-align: left;
}
.theme-option:hover { background: var(--surface-hover); color: var(--text); }
.theme-option.is-active { color: var(--text); background: var(--accent-soft); font-weight: 600; }
.theme-option.is-active::after { content: "✓"; margin-left: auto; color: var(--accent); font-size: 0.85rem; }

.theme-swatch {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px var(--border-strong);
}
[data-swatch="midnight"] { background: linear-gradient(135deg, #0d0d0f 50%, #ff6a3d 50%); }
[data-swatch="aurora"] { background: linear-gradient(135deg, #0e0c14 50%, #a58bff 50%); }
[data-swatch="paper"] { background: linear-gradient(135deg, #f5f3ee 50%, #e0582a 50%); }
[data-swatch="ocean"] { background: linear-gradient(135deg, #0a1116 50%, #40c4d6 50%); }
[data-swatch="sunset"] { background: linear-gradient(135deg, #120d0f 50%, #ff7896 50%); }
[data-swatch="forest"] { background: linear-gradient(135deg, #0c100d 50%, #9ed66e 50%); }
[data-swatch="carbon"] { background: linear-gradient(135deg, #323437 50%, #e2b714 50%); }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--border);
  padding: 56px 24px 28px;
  font-size: 0.88rem;
  color: var(--text-muted);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}
.footer-inner { max-width: var(--page-width); margin-inline: auto; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: 40px;
}
.footer-about p { margin-top: 14px; max-width: 300px; line-height: 1.6; }
.footer-col h2 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}
.footer-col ul { display: grid; gap: 9px; }
.footer-col a { color: var(--text-muted); transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--text-faint);
}
.footer-bottom kbd { font-family: var(--font-mono); }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ---------- Responsive header ---------- */
@media (max-width: 960px) {
  .header-actions .header-cta { display: none; }
}

@media (max-width: 860px) {
  .header-inner { gap: 12px; }
  .nav-toggle { display: grid; }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    height: auto;
    overflow-y: auto;
    background: var(--bg);
    border-top: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 32px;
    gap: 2px;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.25s var(--ease-out), visibility 0.2s;
  }
  .main-nav.is-open { opacity: 1; transform: none; pointer-events: auto; visibility: visible; }
  .nav-item { height: auto; flex-direction: column; align-items: stretch; }
  .nav-link { padding: 13px 12px; font-size: 1rem; }
  .nav-link.is-active { background: var(--surface-hover); }
  .nav-link.is-active::after { display: none; }
  .nav-link .chev { display: none; }
  .nav-menu {
    position: static;
    width: auto;
    opacity: 1;
    visibility: visible;
    transform: none;
    grid-template-columns: 1fr;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0 0 8px 8px;
  }
  .menu-desc, .menu-foot { display: none; }
  .menu-link { padding: 8px 10px; align-items: center; }
  .menu-icon { width: 30px; height: 30px; }
  body.nav-open { overflow: hidden; }
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .footer-about { grid-column: 1 / -1; }
}

@media (max-width: 480px) {
  .header-inner { padding-inline: 16px; }
  .site-footer { padding-inline: 16px; }
}