/*
 * Portfolio UI Kit — canonical runtime tokens.
 * Source specification: /UI_KIT_SPEC.md (candidate contract, 2026-08-30).
 * Components consume semantic roles; project artwork keeps its own colors.
 */

:root {
  /* Foundation colors */
  --foundation-color-black: #000;
  --foundation-color-white: #fff;
  --foundation-color-core-page: #fff;
  --foundation-color-case-light-page: #f9fafb;
  --foundation-color-case-dark-page: #353535;
  --foundation-color-case-dark-surface: #474747;
  --foundation-color-action-light: #005cd4;
  --foundation-color-action-dark: #2c87ff;
  --foundation-color-border-light: #e5e7eb;
  --foundation-color-border-control-light: #d1d5db;
  --foundation-color-error-light: #b42318;
  --foundation-color-media-placeholder: #f1f1f1;

  /* Typography foundations and semantic roles */
  --font-brand: "Manrope", sans-serif;
  --font-brand-variable: "Manrope Variable", "Manrope", sans-serif;
  --leading-display: 1.2;
  --leading-content: 1.4;

  --type-display-size: 64px;
  --type-display-weight: 500;
  --type-display-leading: var(--leading-display);
  --type-page-title-size: 52px;
  --type-page-title-weight: 500;
  --type-page-title-leading: var(--leading-display);
  --type-section-title-size: 32px;
  --type-section-title-weight: 700;
  --type-section-title-leading: var(--leading-content);
  --type-section-title-sm-size: 24px;
  --type-section-title-sm-weight: 700;
  --type-section-title-sm-leading: var(--leading-content);
  --type-body-size: 16px;
  --type-body-weight: 500;
  --type-body-leading: var(--leading-content);
  --type-body-regular-weight: 400;
  --type-label-size: 18px;
  --type-label-weight: 700;
  --type-label-leading: var(--leading-content);
  --type-label-sm-size: 16px;
  --type-label-sm-weight: 700;
  --type-label-sm-leading: var(--leading-content);
  --type-caption-size: 14px;
  --type-caption-weight: 500;
  --type-caption-leading: var(--leading-content);
  --type-legal-size: 12px;
  --type-legal-weight: 500;
  --type-legal-leading: var(--leading-content);
  --type-mobile-nav-size: 24px;

  /* Spacing foundations */
  --space-0: 0px;
  --space-1: 8px;
  --space-2: 10px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 64px;
  --space-11: 80px;
  --space-12: 100px;
  --space-13: 120px;
  --space-14: 160px;
  --space-15: 240px;

  --space-inline-tight: var(--space-1);
  --space-stack-tight: var(--space-2);
  --space-stack: var(--space-5);
  --space-component-y: var(--space-4);
  --space-component-x: var(--space-7);
  --space-card: var(--space-6);
  --space-section: var(--space-10);
  --space-section-lg: var(--space-12);
  --space-page-y: var(--space-14);

  /* Radius foundations */
  --radius-0: 0px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --radius-full: 50%;

  /* Interaction state foundations */
  --opacity-disabled: .55;

  /* Motion foundations and semantic intent */
  --motion-instant: 120ms;
  --motion-fast: 180ms;
  --motion-ui: 240ms;
  --motion-layout: 400ms;
  --motion-reveal: 1000ms;
  --motion-signature: 1500ms;
  --ease-out-quart: cubic-bezier(.25, 1, .5, 1);
  --ease-out-quint: cubic-bezier(.22, 1, .36, 1);
  --ease-out-expo: cubic-bezier(.16, 1, .3, 1);
  --ease-signature: cubic-bezier(.35, 0, 0, 1);

  /* Shared component contracts. Values outside the primitive scale preserve
     approved current geometry until their UI Kit open question is resolved. */
  --portfolio-header-overlay: var(--color-header-overlay);
  --portfolio-project-card-media-background: var(--foundation-color-media-placeholder);
  --portfolio-project-card-copy-gap: var(--space-stack);
  --portfolio-project-card-meta-gap: var(--space-component-y);
  --portfolio-project-card-title-gap: var(--space-3);
  --portfolio-project-card-title-size: var(--type-section-title-sm-size);
  --portfolio-project-card-title-line-height: var(--type-section-title-sm-leading);
  --portfolio-project-card-title-letter-spacing: -.02em;
  --portfolio-project-card-client-color: var(--color-text-secondary-strong);
  --portfolio-project-card-badge-inset: 28px;
  --portfolio-project-card-badge-expanded-size: 56px;
  --portfolio-pill-button-min-height: 57.203125px;
  --portfolio-pill-button-motion: 300ms;
  --portfolio-pill-button-icon-motion: 350ms;
  --portfolio-pill-button-ease: ease;
  --portfolio-footer-mobile-links-offset: 70px;
}

:root,
[data-portfolio-theme="core-light"] {
  --color-page: var(--foundation-color-core-page);
  --color-surface: var(--foundation-color-white);
  --color-inverse: var(--foundation-color-black);
  --color-text-primary: var(--foundation-color-black);
  --color-text-secondary-strong: rgba(0, 0, 0, .7);
  --color-text-secondary: rgba(0, 0, 0, .5);
  --color-text-secondary-muted: rgba(0, 0, 0, .3);
  --color-action: var(--foundation-color-action-light);
  --color-action-contrast: var(--foundation-color-white);
  --color-action-soft: rgba(0, 0, 0, .05);
  --color-inverse-button-background: var(--foundation-color-black);
  --color-inverse-button-text: var(--foundation-color-white);
  --color-header-overlay: rgba(255, 255, 255, .4);
  --color-border: var(--foundation-color-border-light);
  --color-divider: rgba(0, 0, 0, .15);
  --color-border-control: var(--foundation-color-border-control-light);
  --color-focus: var(--foundation-color-black);
  --color-caption: var(--color-text-secondary-strong);
  --color-footer: var(--foundation-color-black);
  --color-footer-text: var(--foundation-color-white);
  --color-footer-muted: rgba(255, 255, 255, .5);
  --color-footer-rollover: rgba(255, 255, 255, .6);
  --color-overlay-inverse-soft: rgba(255, 255, 255, .2);
  --color-error: var(--foundation-color-error-light);
}

[data-case-theme="light"] {
  --color-page: var(--foundation-color-case-light-page);
  --color-header-overlay: rgba(249, 250, 251, .4);
}

[data-case-theme="dark"] {
  --color-page: var(--foundation-color-case-dark-page);
  --color-surface: var(--foundation-color-case-dark-surface);
  --color-inverse: var(--foundation-color-white);
  --color-text-primary: var(--foundation-color-white);
  --color-text-secondary-strong: rgba(255, 255, 255, .7);
  --color-text-secondary: rgba(255, 255, 255, .5);
  --color-text-secondary-muted: rgba(255, 255, 255, .3);
  --color-action: var(--foundation-color-action-dark);
  --color-action-contrast: var(--foundation-color-black);
  --color-action-soft: rgba(255, 255, 255, .1);
  --color-inverse-button-background: var(--foundation-color-white);
  --color-inverse-button-text: var(--foundation-color-black);
  --color-header-overlay: rgba(53, 53, 53, .4);
  --color-border: rgba(255, 255, 255, .15);
  --color-divider: rgba(255, 255, 255, .2);
  --color-border-control: rgba(255, 255, 255, .25);
  --color-focus: var(--foundation-color-white);
  --color-caption: var(--color-text-secondary-strong);
  --color-error: #ff8a80;
}

[data-project-theme] {
  --project-accent: var(--color-action);
  --project-accent-contrast: var(--color-action-contrast);
  --project-accent-soft: color-mix(in srgb, var(--project-accent) 15%, transparent);
}

/* Shared text-link primitive */
.portfolio-text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-inline-tight);
  width: fit-content;
  color: var(--color-action);
  font: inherit;
  font-size: var(--type-caption-size);
  font-weight: var(--type-caption-weight);
  line-height: var(--type-caption-leading);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
  transition: color var(--motion-ui) var(--ease-out-quart);
}

.portfolio-text-link__icon {
  display: block;
  width: var(--space-4);
  height: var(--space-4);
  flex: 0 0 var(--space-4);
}

.portfolio-text-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: var(--space-1);
}

@media (hover: hover) and (pointer: fine) {
  .portfolio-text-link:hover { color: var(--color-text-primary); }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-text-link { transition: none; }
}

@media (max-width: 767.98px) {
  :root {
    --type-display-size: 32px;
    --type-page-title-size: 32px;
    --type-section-title-size: 22px;
    --type-section-title-sm-size: 20px;
  }
}