/*
 * YSCA global design tokens and safe shared accessibility primitives.
 * Loaded after the legacy stylesheet so existing page modules stay intact.
 */
:root:root {
  --ysca-color-navy-950: #07162c;
  --ysca-color-navy-900: #0b1747;
  --ysca-color-navy-800: #0e1b2e;
  --ysca-color-gold-500: #fea630;
  --ysca-color-gold-hover: #e89903;
  --ysca-color-white: #ffffff;
  --ysca-color-surface: #f8fafc;
  --ysca-color-border: #e2e8f0;
  --ysca-color-text: #1c1d1e;
  --ysca-color-text-muted: #475569;

  --ysca-color-primary: var(--ysca-color-navy-900);
  --ysca-color-accent: var(--ysca-color-gold-500);
  --ysca-color-on-accent: var(--ysca-color-navy-950);
  --ysca-color-on-dark: var(--ysca-color-white);

  --ysca-font-heading: "Philosopher", Georgia, serif;
  --ysca-font-body: "Plus Jakarta Sans", Arial, sans-serif;
  --ysca-font-ui: var(--ysca-font-body);

  --ysca-container-max: 1240px;
  --ysca-radius-sm: 6px;
  --ysca-radius-md: 12px;
  --ysca-radius-lg: 20px;
  --ysca-space-1: 4px;
  --ysca-space-2: 8px;
  --ysca-space-3: 12px;
  --ysca-space-4: 16px;
  --ysca-space-6: 24px;
  --ysca-space-8: 32px;
  --ysca-space-12: 48px;
  --ysca-space-16: 64px;
  --ysca-duration-fast: 160ms;
  --ysca-duration-normal: 260ms;

  /* Compatibility aliases retained for legacy CSS. */
  --primary-color: var(--ysca-color-gold-500);
  --heading-color: var(--ysca-color-navy-900);
  --primary-black-color: var(--ysca-color-text);
  --gray-color: var(--ysca-color-surface);
  --white-color: var(--ysca-color-white);
  --text-color: var(--ysca-color-text);
  --border-color: var(--ysca-color-border);
  --heading-font: var(--ysca-font-heading);
  --body-font: var(--ysca-font-body);
}

/* Keep defaults modest: specialised page modules may intentionally override them. */
body {
  font-family: var(--ysca-font-body);
  color: var(--ysca-color-text);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ysca-font-heading);
}

/* Keyboard focus is visible without changing mouse or touch interactions. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--ysca-color-gold-500);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(7, 22, 44, 0.22);
}

.zite-mobile-toggle:focus-visible {
  outline: 3px solid var(--ysca-color-gold-500);
  outline-offset: 3px;
}

/* Opt-in shared primitives. Existing page-specific components are not restyled globally. */
.ysca-ui-button {
  align-items: center;
  border-radius: var(--ysca-radius-sm);
  display: inline-flex;
  font-family: var(--ysca-font-ui);
  font-weight: 700;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  transition: background-color var(--ysca-duration-fast) ease, color var(--ysca-duration-fast) ease,
    border-color var(--ysca-duration-fast) ease, box-shadow var(--ysca-duration-fast) ease,
    transform var(--ysca-duration-fast) ease;
}

.ysca-ui-button--accent {
  background: var(--ysca-color-accent);
  color: var(--ysca-color-on-accent);
}

.ysca-ui-card {
  background: var(--ysca-color-white);
  border: 1px solid var(--ysca-color-border);
  border-radius: var(--ysca-radius-md);
  box-shadow: 0 10px 24px rgba(7, 22, 44, 0.08);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Reusable editorial sections. These are opt-in so legacy page layouts stay intact. */
.ysca-content-guide {
  background: var(--ysca-color-surface);
  color: var(--ysca-color-text);
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.ysca-content-guide__intro {
  max-width: 48rem;
  margin: 0 auto 2rem;
  text-align: center;
}

.ysca-content-guide__intro h2,
.ysca-content-guide__card h3 {
  color: var(--ysca-color-navy-900);
}

.ysca-content-guide__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
}

.ysca-content-guide__card {
  background: var(--ysca-color-white);
  border: 1px solid var(--ysca-color-border);
  border-radius: var(--ysca-radius-lg);
  box-shadow: var(--ysca-shadow-card);
  padding: 1.5rem;
}

.ysca-content-guide__card p:last-child {
  margin-bottom: 0;
}

.ysca-content-guide__action {
  margin: 2rem auto 0;
  max-width: 48rem;
  text-align: center;
}