/* GWexpy — Variant B1 (pydata-sphinx-theme) custom styles.
 *
 * Goal: keep B1's Diataxis top-nav IA, but borrow B2 (furo)'s calmer
 * "reading feel": CJK-aware typography, generous line-height, a comfortable
 * reading measure, and softly-styled cards. Brand colour only otherwise.
 */

:root {
  --gwexpy-accent: #6d6acb;
  --gwexpy-accent-dark: #8b88e0;

  /* CJK-friendly font stack (Japanese authoring) layered on the
   * scientific-Python sans default. */
  --pst-font-family-base:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif, "Noto Sans CJK JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

/* Brand the primary accent in both colour modes. */
html[data-theme="light"] {
  --pst-color-primary: var(--gwexpy-accent);
  --pst-color-link: var(--gwexpy-accent);
  --pst-color-link-hover: #565299;
}
html[data-theme="dark"] {
  --pst-color-primary: var(--gwexpy-accent-dark);
  --pst-color-link: var(--gwexpy-accent-dark);
  --pst-color-link-hover: #a9a6f0;
}

/* --- Reading feel (borrowed from B2 furo) -------------------------------- */

/* Enable proportional CJK metrics for tighter Japanese punctuation. */
body {
  font-feature-settings: "palt";
}

/* Generous, calm line-height for long-form prose. */
article.bd-article {
  line-height: 1.7;
}

/* Comfortable reading measure: cap the prose width so long lines do not
 * sprawl across wide monitors (furo reads well precisely because it does
 * this). The right TOC sidebar is unaffected. */
article.bd-article {
  max-width: 56rem;
}

/* A touch more vertical rhythm between block elements. */
article.bd-article p,
article.bd-article ul,
article.bd-article ol {
  margin-bottom: 1rem;
}

article.bd-article h2 {
  margin-top: 2.4rem;
}
article.bd-article h3 {
  margin-top: 1.8rem;
}

/* --- Cards (match B2's soft, lifting cards) ------------------------------ */

.sd-card {
  border-radius: 10px;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.sd-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(109, 106, 203, 0.18);
}
.sd-card .sd-card-img-top {
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
  object-fit: cover;
}

/* Slightly emphasise the primary call-to-action button. */
.sd-btn-primary {
  letter-spacing: 0.02em;
}

/* --- Header / top band --------------------------------------------------- */

/* Keep the top navbar compact so it does not crowd the content. The theme
 * default reserves a tall band; trim its vertical padding and cap the logo
 * height for a slimmer header. */
.bd-header.navbar {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}
.bd-header .navbar-brand.logo {
  padding-top: 0;
  padding-bottom: 0;
}
.bd-header .navbar-brand img,
.bd-header .navbar-brand .logo__image {
  max-height: 2rem;
}

/* --- Misc polish --------------------------------------------------------- */

/* Soften code blocks to sit comfortably within the calmer page. */
div.highlight {
  border-radius: 8px;
}

/* Build identity stays readable on narrow screens without crowding the navbar. */
.gwexpy-build-status { font-size: .8rem; padding: .6rem 1rem; border-bottom: 1px solid var(--pst-color-border); overflow-wrap: anywhere; }
.gwexpy-build-status a { white-space: nowrap; }