:root {
  --secondary: #555750;
  --label: #66675f;
  --body-copy: #64655f;
  --meta: #77786f;
  --note-copy: #65665f;
  --subtle: #85867e;
  --faint: #a0a097;
  --footnote: #898a82;
  --answer: #686961;
  --note-rule: #aaa99f;
  --row-hover: rgba(255, 255, 255, .45);
  --accent-ink: #fff;
  --accent-hover: #c93d2a;
  --active-ink: #fff;
  --light-hover: #fff;
  --toggle-shadow: 0 4px 18px rgba(32, 33, 31, .09);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #151816;
  --white: #232823;
  --ink: #f3f0e8;
  --muted: #b2b9ad;
  --line: #343c35;
  --accent: #ed7b61;
  --deep: #222823;
  --secondary: #c3c9bc;
  --label: #b4bcae;
  --body-copy: #bac1b3;
  --meta: #a8b1a0;
  --note-copy: #b4bcae;
  --subtle: #a0aa98;
  --faint: #909b88;
  --footnote: #a0aa98;
  --answer: #bac1b3;
  --note-rule: #495247;
  --row-hover: rgba(255, 255, 255, .035);
  --accent-ink: #151816;
  --accent-hover: #fa947d;
  --active-ink: #151816;
  --light-hover: #30372f;
  --toggle-shadow: 0 4px 20px rgba(0, 0, 0, .24);
}

.nav-links, .text-link, .footer-links a { color: var(--secondary); }
.eyebrow { color: var(--label); }
.hero-lede { color: var(--body-copy); }
.note-top, .tab-btn, .footer-main > p { color: var(--meta); }
.note-bottom { color: var(--note-copy); }
.catalog-caption, .product-type { color: var(--subtle); }
.product-no { color: var(--faint); }
.product-main p { color: var(--muted); }
.catalog-footnote, .footer-bottom { color: var(--footnote); }
.faq-answer p { color: var(--answer); }
.hero-note { border-color: var(--note-rule); }
.product-row:hover { background: var(--row-hover); }
.tab-btn.active { color: var(--active-ink); }
.tab-btn:hover { color: var(--ink); }
.tab-btn.active:hover { color: var(--active-ink); }
.button-primary, .closing-band { color: var(--accent-ink); }
.button-primary:hover { background: var(--accent-hover); }
.button-light:hover { background: var(--light-hover); }
.nav-links a:hover, .footer-links a:hover { color: var(--accent); }

.theme-toggle {
  position: fixed;
  right: max(24px, env(safe-area-inset-right));
  bottom: max(24px, env(safe-area-inset-bottom));
  z-index: 20;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--toggle-shadow);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.theme-toggle:hover { border-color: var(--accent); transform: translateY(-2px); }
.theme-toggle:active { transform: scale(.95); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.theme-toggle[aria-disabled="true"] { cursor: default; }
.theme-icon { position: absolute; transition: opacity .25s ease, transform .45s cubic-bezier(.2, .8, .2, 1); }
.theme-icon-moon { opacity: 1; transform: rotate(0) scale(1); }
.theme-icon-sun { opacity: 0; transform: rotate(-90deg) scale(.5); }
[data-theme="dark"] .theme-icon-moon { opacity: 0; transform: rotate(90deg) scale(.5); }
[data-theme="dark"] .theme-icon-sun { opacity: 1; transform: rotate(0) scale(1); }
.theme-reveal .theme-icon { transition: none; }

/* New palette expands from the switch; the previous page stays below it. */
::view-transition-old(root), ::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* Smooth color change for browsers without document view transitions. */
.theme-fade, .theme-fade * {
  transition-property: background-color, color, border-color, box-shadow, fill, stroke;
  transition-duration: .45s;
  transition-timing-function: ease;
}

@media (max-width: 620px) {
  .theme-toggle {
    right: max(16px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
  }
  .footer-bottom { padding-bottom: 84px; }
}
@media (prefers-reduced-motion: reduce) {
  .theme-toggle, .theme-icon { transition: none; }
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
}