/* Base */
*, *::before, *::after { box-sizing: border-box; }
body { font-family: "Segoe UI", system-ui, -apple-system, sans-serif; line-height: 1.6; color: #333; margin: 0 auto; max-width: 1105px; }
a { color: #D47500; text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1105px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header { background: #fff; padding: 1rem 0; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.site-header-actions { display: flex; align-items: center; gap: 1rem; }
.site-brand { display: block; }
.site-brand img { display: block; max-width: 656px; width: 100%; height: auto; }
.site-header nav a { color: #D47500; text-decoration: none; font-weight: 600; }
.site-header nav a:hover { text-decoration: underline; }

.site-search-form { display: flex; gap: 0.5rem; align-items: center; }
.site-search-form input[type="search"] {
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 0.4rem 0.55rem;
  min-width: 14rem;
}
.site-search-form button {
  border: 1px solid #0f2740;
  background: #0f2740;
  color: #fff;
  border-radius: 4px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
}
.site-search-form button:hover { background: #123256; }
/* Home page */
.home-body { padding-top: 0.5rem; }
.home-body h1 {
  border-bottom: 2px solid #d2d7df;
  font-size: 3.25rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
}
.home-intro { font-size: 1.05rem; max-width: 72rem; }
.home-search-form { margin: 1.75rem auto; max-width: 40rem; }
.home-search-form input[type="search"] { flex: 1; min-width: 0; }
.home-links { margin: 1.75rem 0 0; padding-left: 1.4rem; }
.home-links li { color: #7b8088; margin: 0.4rem 0; }
.home-links a { color: #d47500; font-size: 1.05rem; text-decoration: none; }
.home-links a:hover { text-decoration: underline; }

/* Main */
main { padding: 2rem 0; }

/* Term page */
.glossary-term h1 { color: #1a3a5c; border-bottom: 2px solid #e2e8f0; padding-bottom: 0.5rem; }
.term-body { margin: 1.5rem 0; }
.term-body p { margin: 0.75rem 0; }
.term-body img { max-width: 100%; height: auto; vertical-align: middle; }
.term-body a { color: #D47500; text-decoration: none; }
.term-body a:hover { text-decoration: underline; }

/* A-Z index */
.alpha-nav { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 2rem; }
.alpha-nav a { display: inline-block; width: 2rem; height: 2rem; line-height: 2rem; text-align: center; border-radius: 4px; background: #f1f5f9; color: #1a3a5c; text-decoration: none; font-weight: 600; }
.alpha-nav a:hover { background: #1a3a5c; color: #fff; }
.term-list { list-style: none; padding: 0; column-count: 2; column-gap: 2rem; }
.term-list li { padding: 0.25rem 0; break-inside: avoid; }
.term-list a { color: #D47500; text-decoration: none; }
.term-list a:hover { text-decoration: underline; }

/* Scroll to top (all-terms page) */
.scroll-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 500;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.9);
  color: #333;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.5rem);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease, background 0.15s ease, box-shadow 0.15s ease;
  backdrop-filter: blur(4px);
}
.scroll-to-top:hover {
  background: rgba(255, 255, 255, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.scroll-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Tooltips */
.glossary-term-tip { border-bottom: 1px dotted #8b9dc3; cursor: help; }
.glossary-tooltip {
  display: none; position: fixed; z-index: 1000;
  border: 1px solid #e2e8f0; border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  padding: 0.5rem 0.75rem;
  width: max-content; max-width: min(350px, 90vw);
  max-height: 40vh; overflow-y: auto;
  color: #374151; font-size: 0.875rem; line-height: 1.5;
  white-space: normal; box-sizing: border-box;
  overflow-wrap: break-word; word-wrap: break-word;
  /* Scroll shadows: white covers (local) hide the shadows when at top/bottom */
  background:
    linear-gradient(#fff 33%, rgba(255,255,255,0)) center top / 100% 40px no-repeat local,
    linear-gradient(rgba(255,255,255,0), #fff 67%) center bottom / 100% 40px no-repeat local,
    radial-gradient(farthest-side at 50% 0, rgba(0,0,0,0.1), transparent) center top / 100% 8px no-repeat scroll,
    radial-gradient(farthest-side at 50% 100%, rgba(0,0,0,0.1), transparent) center bottom / 100% 8px no-repeat scroll,
    #fff;
}
.glossary-tooltip.visible { display: block; }
.glossary-tooltip a { color: #D47500; text-decoration: none; }
.glossary-tooltip a:hover { text-decoration: underline; }

.search-page > p { margin-bottom: 1rem; }
.site-search-form--page,
.site-search-form--fallback { margin: 1rem 0 1.5rem; }

/* Search loading indicator */
.search-loading {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  margin: 1rem 0;
  color: #1a3a5c;
  font-size: 1rem;
}
.search-loading.is-active { display: flex; }
.search-loading__spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid #e2e8f0;
  border-top-color: #0f2740;
  border-radius: 50%;
  animation: search-loading-spin 0.7s linear infinite;
}
@keyframes search-loading-spin {
  to { transform: rotate(360deg); }
}
.search-loading__text { font-weight: 500; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 880px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }
  .site-header-actions {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }
  .site-header nav a {
    margin-left: 0;
    margin-right: 1rem;
  }
  .site-brand img { max-width: 360px; }
  .site-search-form { width: 100%; }
  .site-search-form input[type="search"] { flex: 1; min-width: 0; }
  .home-body h1 { font-size: 2.25rem; }
  .home-search-form { margin-left: 0; margin-right: 0; }
  .site-footer p { font-size: 0.95rem; }
}

/* Footer */
.site-footer { margin-top: 3rem; padding-bottom: 2.5rem; text-align: left; }
.site-footer p { color: #3f4247; font-size: 0.85rem; line-height: 1.5; margin: 0; }

/* Alerts */
.alert {
  padding: 15px;
  margin-bottom: 20px;
  border: 1px solid transparent;
  border-radius: 4px;
}
.alert-info {
  background-color: #d9edf7;
  border-color: #bce8f1;
  color: #31708f;
}