projects/Color theme.html at main · kokzin/projects · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<style>

/* Modern CSS Theming Demo */

@property --contrast-color {
  syntax: "<color>";
  initial-value: white;
  inherits: true;
}

@property --bg {
  syntax: "<color>";
  initial-value: #6c1afb;
  inherits: true;
}

/* Demo wrapper */
.theming-demo {
  color-scheme: light dark;
  padding: 1.5rem 1.5rem 0;
  background: light-dark(oklch(0.965 0.003 265), oklch(0.14 0.008 265));
  font-family: system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, border-color 0.3s;
  height: 100dvh;
}

.theming-demo small {
  display: block;
  margin-block-end: 1rem;
  font-size: 0.75rem;
}

/* Toggle row */
.theming-demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1.25rem;
}

.theming-demo-header span {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: contrast-color(var(--bg));
}

.theming-demo-toggle {
  appearance: none;
  width: 40px;
  height: 22px;
  border-radius: 999px;
  background: light-dark(oklch(0.88 0.01 265), oklch(0.28 0.015 265));
  border: 1.5px solid light-dark(oklch(0.82 0.012 265), oklch(0.35 0.015 265));
  cursor: pointer;
  position: relative;
  transition: background 0.25s, border-color 0.25s;
}

.theming-demo-toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: light-dark(white, oklch(0.82 0.02 265));
  transition: transform 0.25s ease, background 0.25s;
  box-shadow: 0 1px 2px oklch(0 0 0 / 0.15);
}

.theming-demo-toggle:checked::after {
  transform: translateX(18px);
}

.theming-demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.theming-card {
  --bg: var(--brand-color, oklch(0.55 0.08 265));
  --contrast-color: contrast-color(var(--bg));
  background: var(--bg);
  color: contrast-color(var(--bg));
  border-radius: 10px;
  padding: 1.25rem;
  transition: box-shadow 0.3s ease, transform 0.2s ease;

  box-shadow:
    /* Subtle shadow--visible in light, transparent in dark */
  0 1px 2px light-dark(lightgray, transparent),
  0 4px 12px light-dark(lightgray, transparent),
  0 12px 32px light-dark(lightgray, transparent),
  /* Glowy border--transparent in light, visible in dark */
  inset 0 0 0 1px light-dark(transparent, oklch(from var(--bg) calc(l + 0.5) c h / 0.5)),
  0 0 16px light-dark(transparent, oklch(from var(--bg) calc(l + 0.5) c h / 0.3)),
  0 0 3px light-dark(transparent, oklch(from var(--bg) calc(l + 0.5) c h / 0.5))
}

.theming-card:hover {
  transform: translateY(-1px);

}

.theming-card-label {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-block-end: 0.4rem;
}

.theming-card-title {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-block-end: 0.35rem;
  line-height: 1.35;
}

.theming-card-body {
  font-size: 0.8rem;
  line-height: 1.5;
}

/* Style query palette customization */
@container style(--contrast-color: white) {
  .theming-card-label,
  .theming-card-body {
    color: oklch(from var(--bg) 0.9 0.1 h);
  }

  .theming-card-title {
    color: contrast-color(var(--bg));
  }
}

@container style(--contrast-color: black) {
  .theming-card-label,
  .theming-card-body {
    color: oklch(from var(--bg) 0.3 0.1 h);
  }

  .theming-card-title {
    color: contrast-color(var(--bg));
  }
}

body {
  font-family: system-ui;
  margin: 0;
}

</style>
<body>
<div class="theming-demo">
  <div class="theming-demo-header">
    <input type="checkbox" class="theming-demo-toggle" aria-label="Toggle dark mode">
  </div>
  <div class="theming-demo-grid">
    <div class="theming-card" style="--brand-color: light-dark(oklch(0.53 0.28 266.94), oklch(0.77 0.13 285.18))">
      <div class="theming-card-label">Micro Theming</div>
      <div class="theming-card-title">Local Theming</div>
      <div class="theming-card-body">Theming based on element, based on system (micro theme).</div>
    </div>
    <div class="theming-card" style="--brand-color: light-dark(oklch(0.89 0.11 163.4), oklch(0.39 0.08 167.68))">
      <div class="theming-card-label">Contrast</div>
      <div class="theming-card-title">Auto Text Color</div>
      <div class="theming-card-body">Readable text on any background, according to WCAG 2.</div>
    </div>
    <div class="theming-card" style="--brand-color: light-dark(oklch(0.9 0.09 60.77), oklch(0.38 0.09 53.69))">
      <div class="theming-card-label">Macro themeing</div>
      <div class="theming-card-title">Elevation</div>
      <div class="theming-card-body">Shadows in light, neon glow in dark (macro theme).</div>
    </div>
    <div class="theming-card" style="--brand-color: light-dark(oklch(0.85 0.13 347.79), oklch(0.42 0.1 338.12))">
      <div class="theming-card-label">Style Queries</div>
      <div class="theming-card-title">Style Branching</div>
      <div class="theming-card-body">Custom palettes via container style queries.</div>
    </div>
  </div>
</div>
       <script>
// Theme toggle for embedded demo
document.querySelectorAll('.theming-demo').forEach((demo) => {
  const toggle = demo.querySelector('.theming-demo-toggle');
  if (!toggle) return;

  const darkMQ = matchMedia('(prefers-color-scheme: dark)');

  function apply(dark) {
    toggle.checked = dark;
    demo.style.colorScheme = dark ? 'dark' : 'light';
  }

  apply(darkMQ.matches);
  darkMQ.addEventListener('change', (e) => apply(e.matches));
  toggle.addEventListener('change', () => {
    demo.style.colorScheme = toggle.checked ? 'dark' : 'light';
  });
});


       </script>

        <!-- Lenis CDN -->
   <script src="https://unpkg.com/@studio-freight/lenis@1.0.33/dist/lenis.min.js"></script>
</body>
</html>