/* 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;
  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;
  padding: 2rem;
}

.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: light-dark(black, white);
}

.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));
  }
}