[data-surface='glass'] .pv-card,
[data-surface='glass'] .card,
.surface-glass {
  background: color-mix(in oklab, var(--color-bg-1) 55%, transparent);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border: var(--border-thin) solid color-mix(in oklab, var(--color-text-inverse) 35%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, var(--color-text-inverse) 30%, transparent),
    var(--shadow-md);
}
[data-surface='glass'] .pv-header {
  background: color-mix(in oklab, var(--color-bg-1) 45%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
}
[data-surface='glass'] .pv-btn-primary,
[data-surface='glass'] .btn-primary {
  background: color-mix(in oklab, var(--color-primary) 82%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 color-mix(in oklab, var(--color-text-inverse) 35%, transparent);
}

[data-surface='clay'] .pv-card,
[data-surface='clay'] .card,
.surface-clay {
  background: color-mix(in oklab, var(--color-primary-subtle) 60%, var(--color-bg-1));
  border: none;
  border-radius: calc(var(--radius-surface) + var(--sp-2));
  box-shadow:
    inset var(--sp-2) var(--sp-2) var(--sp-4)
      color-mix(in oklab, var(--color-text-inverse) 55%, transparent),
    inset calc(var(--sp-2) * -1) calc(var(--sp-2) * -1) var(--sp-4)
      color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 18%, transparent),
    0 var(--sp-4) var(--sp-8) calc(var(--sp-2) * -1)
      color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 22%, transparent);
}
[data-surface='clay'] .pv-btn,
[data-surface='clay'] .btn {
  border-radius: var(--radius-full);
}
[data-surface='clay'] .pv-btn-primary,
[data-surface='clay'] .btn-primary {
  box-shadow:
    inset 0 var(--sp-1) var(--sp-2)
      color-mix(in oklab, var(--color-text-inverse) 35%, transparent),
    inset 0 calc(var(--sp-1) * -1) var(--sp-2)
      color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 30%, transparent),
    0 var(--sp-2) var(--sp-4) calc(var(--sp-1) * -1)
      color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 30%, transparent);
}
[data-surface='clay'] .pv-input,
[data-surface='clay'] .form-field input,
[data-surface='clay'] .form-field textarea {
  border: none;
  border-radius: var(--radius-xl);
  box-shadow:
    inset var(--sp-1) var(--sp-1) var(--sp-2)
      color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 14%, transparent),
    inset calc(var(--sp-1) * -1) calc(var(--sp-1) * -1) var(--sp-2)
      color-mix(in oklab, var(--color-text-inverse) 40%, transparent);
}

[data-surface='skeuo'] .pv-card,
[data-surface='skeuo'] .card,
.surface-skeuo {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--color-bg-1) 92%, var(--color-text-inverse)),
    var(--color-bg-2)
  );
  border: var(--border-thin) solid var(--color-border-2);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, var(--color-text-inverse) 45%, transparent),
    inset 0 -1px 0 color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 10%, transparent),
    var(--shadow-sm);
}
[data-surface='skeuo'] .pv-btn-primary,
[data-surface='skeuo'] .btn-primary {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--color-primary) 86%, var(--color-text-inverse)),
    var(--color-primary-active)
  );
  border: var(--border-thin) solid var(--color-primary-active);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, var(--color-text-inverse) 40%, transparent),
    0 var(--sp-1) var(--sp-2) color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 25%, transparent);
  text-shadow: 0 1px 0 color-mix(in oklab, var(--color-primary-active) 70%, transparent);
}
[data-surface='skeuo'] .pv-btn-primary:active,
[data-surface='skeuo'] .btn-primary:active {
  box-shadow: inset 0 var(--sp-1) var(--sp-2)
    color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 35%, transparent);
}
[data-surface='skeuo'] .pv-input,
[data-surface='skeuo'] .form-field input,
[data-surface='skeuo'] .form-field textarea {
  box-shadow: inset 0 var(--sp-1) var(--sp-2)
    color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 12%, transparent);
}

:root { --glass-blur: 12px; --glass-sat: 165%; }
html[data-glass='off'] { --glass-blur: 0px; --glass-sat: 100%; }
html[data-glass='subtle'] { --glass-blur: 10px; --glass-sat: 150%; }
html[data-glass='classic'] { --glass-blur: 16px; --glass-sat: 180%; }
html[data-glass='vivid'] { --glass-blur: 18px; --glass-sat: 190%; }
@media (prefers-reduced-motion: reduce) {
  html[data-glass='vivid'], html[data-glass='classic'] { --glass-blur: 10px; --glass-sat: 150%; }
}

[data-surface='liquid'] .pv-card,
[data-surface='liquid'] .card,
.surface-liquid {
  position: relative;
  background: color-mix(in oklab, var(--color-bg-1) 38%, transparent);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: none;
  border-radius: calc(var(--radius-surface) + var(--sp-1));
  box-shadow:
    inset 0 1px 1px color-mix(in oklab, var(--color-text-inverse) 55%, transparent),
    inset 1px 0 1px color-mix(in oklab, var(--color-text-inverse) 25%, transparent),
    inset 0 -1px 1px color-mix(in oklab, var(--color-shadow-color, oklch(25% 0 0)) 12%, transparent),
    0 0 0 1px color-mix(in oklab, var(--color-text-inverse) 16%, transparent),
    var(--shadow-lg);
}

[data-surface='liquid'] .pv-card::before,
[data-surface='liquid'] .card::before,
.surface-liquid::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    120% 60% at 25% -20%,
    color-mix(in oklab, var(--color-text-inverse) 24%, transparent),
    transparent 60%
  );
  pointer-events: none;
}
[data-surface='liquid'] .pv-header {
  background: color-mix(in oklab, var(--color-bg-1) 30%, transparent);
  -webkit-backdrop-filter: blur(18px) saturate(190%);
  backdrop-filter: blur(18px) saturate(190%);
  border-block-end-color: color-mix(in oklab, var(--color-text-inverse) 22%, transparent);
}
[data-surface='liquid'] .pv-btn,
[data-surface='liquid'] .btn { border-radius: var(--radius-full); }
[data-surface='liquid'] .pv-btn-primary,
[data-surface='liquid'] .btn-primary {
  background: color-mix(in oklab, var(--color-primary) 78%, transparent);
  -webkit-backdrop-filter: blur(10px) saturate(170%);
  backdrop-filter: blur(10px) saturate(170%);
  box-shadow:
    inset 0 1px 1px color-mix(in oklab, var(--color-text-inverse) 50%, transparent),
    0 0 0 1px color-mix(in oklab, var(--color-text-inverse) 18%, transparent),
    var(--shadow-md);
}

@supports not (backdrop-filter: blur(1px)) {
  [data-surface='glass'] .pv-card, [data-surface='glass'] .card, .surface-glass,
  [data-surface='liquid'] .pv-card, [data-surface='liquid'] .card, .surface-liquid {
    background: color-mix(in oklab, var(--color-bg-1) 92%, var(--color-bg-2));
  }
  [data-surface='glass'] .pv-header, [data-surface='liquid'] .pv-header {
    background: var(--color-bg-1);
  }
}

html[data-glass='off'] [data-surface='liquid'] .pv-card,
html[data-glass='off'] [data-surface='liquid'] .card,
html[data-glass='off'] .surface-liquid {
  background: var(--color-bg-1);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border: var(--border-thin) solid var(--color-border-1);
}
html[data-glass='off'] [data-surface='liquid'] .pv-card::before,
html[data-glass='off'] [data-surface='liquid'] .card::before,
html[data-glass='off'] .surface-liquid::before { display: none; }

@media (prefers-reduced-transparency: reduce) {
  [data-surface='glass'] .pv-card, [data-surface='glass'] .card, .surface-glass,
  [data-surface='liquid'] .pv-card, [data-surface='liquid'] .card, .surface-liquid,
  [data-surface='glass'] .pv-header, [data-surface='liquid'] .pv-header,
  [data-surface='glass'] .pv-btn-primary, [data-surface='glass'] .btn-primary,
  [data-surface='liquid'] .pv-btn-primary, [data-surface='liquid'] .btn-primary {
    background: var(--color-bg-1);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
  [data-surface='liquid'] .pv-btn-primary, [data-surface='liquid'] .btn-primary,
  [data-surface='glass'] .pv-btn-primary, [data-surface='glass'] .btn-primary {
    background: var(--color-primary);
  }
}