:root {
  color-scheme: light;

  /* PSYWERX brand colors */
  --psywerx-navy: #003c68;
  --psywerx-blue: #005478;
  --psywerx-mid-blue: #2785b0;
  --psywerx-sky: #69add0;
  --psywerx-pale-blue: #eaf4f9;
  --psywerx-surface: #f7fafc;
  --psywerx-white: #ffffff;
  --psywerx-text: #183543;
  --psywerx-muted: #5b7480;
  --psywerx-border: #c9dde7;

  /* Semantic colors */
  --psywerx-link: #006891;
  --psywerx-link-hover: #003c68;
  --psywerx-focus: #087eaf;
  --psywerx-info: #e5f4fb;
  --psywerx-error: #a63d4a;
  --psywerx-error-surface: #fff5f6;

  /* Typography */
  --font-sans: Aptos, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --text-page-title: clamp(2.75rem, 6vw, 5.25rem);
  --text-section-title: clamp(2rem, 4vw, 3rem);
  --text-subsection-title: clamp(1.45rem, 2.5vw, 2rem);
  --text-card-title: 1.25rem;
  --text-body: 1rem;
  --text-supporting: 0.875rem;
  --text-metadata: 0.75rem;
  --leading-body: 1.65;
  --leading-compact: 1.35;

  /* Shape, spacing, and elevation */
  --radius-small: 0.375rem;
  --radius-medium: 0.75rem;
  --radius-large: 1.125rem;
  --shadow-small: 0 1px 2px rgb(0 60 104 / 5%);
  --shadow-raised: 0 12px 30px rgb(0 60 104 / 9%);
  --shadow-overlay: 0 24px 72px rgb(0 43 72 / 24%);

  /* Compatibility aliases for existing PSYWERX applications */
  --color-ink: var(--psywerx-text);
  --color-ink-soft: var(--psywerx-muted);
  --color-paper: var(--psywerx-surface);
  --color-surface: var(--psywerx-white);
  --color-line: var(--psywerx-border);
  --color-line-strong: #9fbfce;
  --color-brand: var(--psywerx-blue);
  --color-brand-dark: var(--psywerx-navy);
  --color-accent: var(--psywerx-mid-blue);
  --color-focus: var(--psywerx-focus);
  --shadow-large: var(--shadow-overlay);

  color: var(--psywerx-text);
  background: var(--psywerx-surface);
  font-family: var(--font-sans);
  font-synthesis: none;
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--psywerx-text);
  background: var(--psywerx-surface);
}

body:has(dialog[open]) {
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select,
input[type="checkbox"] {
  cursor: pointer;
}

button:disabled,
select:disabled,
input:disabled {
  cursor: not-allowed;
}

a {
  color: var(--psywerx-link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--psywerx-link-hover);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--psywerx-navy);
  font-family: var(--font-sans);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

p {
  overflow-wrap: break-word;
}

:focus-visible {
  outline: 3px solid var(--psywerx-focus);
  outline-offset: 3px;
}

.site-container {
  width: min(100% - 2.5rem, 78rem);
  margin-inline: auto;
}

/* Shared type roles */

.page-title {
  font-size: var(--text-page-title);
  font-weight: 730;
  letter-spacing: -0.055em;
}

.section-title {
  font-size: var(--text-section-title);
  font-weight: 700;
}

.subsection-title {
  font-size: var(--text-subsection-title);
  font-weight: 700;
}

.card-title {
  font-size: var(--text-card-title);
  font-weight: 700;
}

.eyebrow,
.taxonomy-label {
  margin-bottom: 0.7rem;
  color: var(--psywerx-blue);
  font-size: var(--text-metadata);
  font-weight: 800;
  letter-spacing: 0.13em;
  line-height: var(--leading-compact);
  text-transform: uppercase;
}

.supporting-text {
  color: var(--psywerx-muted);
  font-size: var(--text-supporting);
}

.metadata {
  color: var(--psywerx-muted);
  font-size: var(--text-metadata);
  font-weight: 650;
  letter-spacing: 0.025em;
}

/* Shared controls and components */

.primary-button,
.secondary-button,
.text-button {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-small);
  font-weight: 720;
}

.primary-button {
  padding: 0.65rem 1rem;
  border: 1px solid var(--psywerx-blue);
  color: var(--psywerx-white);
  background: var(--psywerx-blue);
  text-decoration: none;
}

.primary-button:hover:not(:disabled) {
  border-color: var(--psywerx-navy);
  color: var(--psywerx-white);
  background: var(--psywerx-navy);
}

.secondary-button {
  padding: 0.6rem 0.95rem;
  border: 1px solid #9fbfce;
  color: var(--psywerx-blue);
  background: var(--psywerx-white);
}

.secondary-button:hover:not(:disabled) {
  border-color: var(--psywerx-blue);
  color: var(--psywerx-navy);
  background: var(--psywerx-pale-blue);
}

.primary-button:disabled,
.secondary-button:disabled {
  border-color: #cfdde4;
  color: #81949d;
  background: #edf2f4;
}

.text-button,
.text-link {
  padding: 0;
  border: 0;
  color: var(--psywerx-link);
  background: transparent;
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.text-button:hover:not(:disabled),
.text-link:hover {
  color: var(--psywerx-link-hover);
}

.text-button:disabled {
  color: #879aa3;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a {
  min-height: 2.5rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  color: var(--psywerx-muted);
  font-size: 0.78rem;
  font-weight: 720;
  line-height: 1.35;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a:hover {
  border-color: var(--psywerx-border);
  color: var(--psywerx-navy);
  background: var(--psywerx-pale-blue);
}

.site-nav a[aria-current="page"] {
  border-color: #a9c9d8;
  color: var(--psywerx-navy);
  background: var(--psywerx-pale-blue);
}

.card,
.definition-block {
  border: 1px solid var(--psywerx-border);
  border-radius: var(--radius-medium);
  background: var(--psywerx-white);
}

.card {
  box-shadow: var(--shadow-small);
}

.badge,
.tag,
.taxonomy-badge {
  display: inline-flex;
  min-height: 1.65rem;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 750;
  letter-spacing: 0.025em;
  line-height: 1.2;
}

.badge,
.tag {
  color: var(--psywerx-blue);
  background: var(--psywerx-pale-blue);
}

.taxonomy-badge {
  border-color: #b8d7e5;
  color: var(--psywerx-navy);
  background: #f1f8fb;
}

.input,
.select,
input[type="search"],
input[type="text"],
select,
textarea {
  width: 100%;
  min-height: 2.85rem;
  border: 1px solid #a9c6d4;
  border-radius: var(--radius-small);
  color: var(--psywerx-text);
  background: var(--psywerx-white);
}

.input:hover,
.select:hover,
input[type="search"]:hover,
input[type="text"]:hover,
select:hover,
textarea:hover {
  border-color: var(--psywerx-mid-blue);
}

input[type="search"]::placeholder,
input[type="text"]::placeholder,
textarea::placeholder {
  color: var(--psywerx-muted);
}

input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--psywerx-blue);
}

.facet-section {
  border-bottom: 1px solid var(--psywerx-border);
}

.facet-section > summary {
  min-height: 2.75rem;
  color: var(--psywerx-text);
  font-size: var(--text-supporting);
  font-weight: 750;
}

.active-filter-chip {
  display: inline-flex;
  min-height: 1.9rem;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border: 1px solid #aed0df;
  border-radius: 999px;
  color: var(--psywerx-navy);
  background: var(--psywerx-pale-blue);
  font-size: 0.7rem;
  font-weight: 700;
}

.breadcrumb {
  color: var(--psywerx-muted);
  font-size: var(--text-metadata);
}

.mode-selector {
  display: inline-grid;
  padding: 0.25rem;
  border: 1px solid var(--psywerx-border);
  border-radius: var(--radius-medium);
  background: var(--psywerx-pale-blue);
}

.information-callout {
  padding: 1rem 1.15rem;
  border: 1px solid #abd0e2;
  border-left: 0.25rem solid var(--psywerx-mid-blue);
  border-radius: var(--radius-small);
  color: var(--psywerx-text);
  background: var(--psywerx-info);
}

.section-divider {
  height: 1px;
  border: 0;
  background: var(--psywerx-border);
}

.definition-block {
  padding: 1.1rem;
}

.definition-block__term {
  margin-bottom: 0.4rem;
  color: var(--psywerx-navy);
  font-weight: 750;
}

.controlled-vocabulary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-small);
  color: var(--psywerx-white);
  background: var(--psywerx-navy);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  border: 0;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

@media (max-width: 40rem) {
  .site-container {
    width: min(100% - 1.5rem, 78rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}