/* Theme colors only. Existing typography, grids, spacing, and media stay intact. */
:root {
  color-scheme: light;
  --theme-surface: #f0f1f4;
  --theme-header-line: #e5e5e5;
  --theme-footer-line: #eef0f1;
  --theme-footer-muted: #7b838b;
  --theme-focus: #58738b;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #12110c;
  --ink: #f3f1ea;
  --deep: #f3f1ea;
  --muted: #aab1b8;
  --line: #2a323b;
  --theme-surface: #181f27;
  --theme-header-line: #2a323b;
  --theme-footer-line: #2a323b;
  --theme-footer-muted: #aab1b8;
  --theme-focus: #91c5ee;
}

.case-page { color: var(--ink); }
:root[data-theme="dark"] .case-page .case-copy > div { color: var(--muted); }
.site-header { background: var(--paper); border-bottom-color: var(--theme-header-line); }
.site-header:focus-within { transform: translateY(0); }
.site-footer { border-top-color: var(--theme-footer-line); }
.footer-inner > div:first-child span,
.footer-inner > span { color: var(--theme-footer-muted); }
.case-meta, .more-card small { color: var(--muted); }
.more-heading { border-bottom-color: var(--line); }
.skip, dialog { background: var(--paper); color: var(--ink); }
a:focus-visible, button:focus-visible { outline-color: var(--theme-focus); }

/* Keep both icon states legible: dark moon on white, warm-white sun on dark. */
.site-header .header-frame { gap: 16px; }
.site-header nav { align-items: center; }
.footer-links { align-items: center; }
.theme-button {
  position: relative;
  display: inline-grid;
  place-items: center;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  touch-action: manipulation;
  transition: opacity .2s ease;
}
/* A forgiving hit area without adding visual padding to the nav's equal gaps. */
.theme-button::before { content: ""; position: absolute; inset: -8px; }
.theme-button[hidden] { display: none; }
.theme-button:hover { opacity: .55; }
.theme-button svg { display: block; width: 16px; height: 16px; }
.theme-button .theme-sun { display: none; }
[data-theme="dark"] .theme-button .theme-moon { display: none; }
[data-theme="dark"] .theme-button .theme-sun { display: block; }

/* Darken only the backing surfaces, never filter, dim, or invert the media. */
[data-theme="dark"] :is(
  .cover, .case-video-panel, .case-video, .forecast-placeholder, .forecast-video,
  .internal-hero, .internal-wide, .internal-team, .internal-flow,
  .internal-bento-column img, .internal-final-grid img, .image-triptych img,
  .bento img, .bento video, .squiggly-more-card video, .visual-blue,
  .bento-second .visual-blue, .video-placeholder
) { background-color: var(--theme-surface); }
[data-theme="dark"] .placeholder-label,
[data-theme="dark"] .video-placeholder { color: var(--muted); }
[data-theme="dark"] .video-placeholder span { border-color: var(--line); }

/* Animate explicit changes only, never the initial page load or project media. */
@media (prefers-reduced-motion: no-preference) {
  [data-theme-changing] :is(body, .case-page, .site-footer, .more-heading, .about, .current,
    .about-copy > p, .identity, nav, .section-heading span, .project-meta, .case-meta,
    .more-card small, .footer-inner > span, .footer-inner > div:first-child span) {
    transition: background-color 240ms ease, color 240ms ease, border-color 240ms ease;
  }
  [data-theme-changing] .site-header {
    transition: transform 240ms ease, background-color 240ms ease, border-color 240ms ease;
  }
}

@media (prefers-reduced-motion: reduce) {
  .theme-button { transition: none; }
}

@media (max-width: 480px) {
  .site-header .header-frame { gap: 12px; }
  .site-header nav { gap: 12px; }
}