/**
 * Sentinel Tools — shared shell (Sprint B)
 * Additive design system. Tools keep local CSS; this unifies chrome,
 * results, print, a11y, related links, and sticky utility bars.
 */
:root {
  --st-navy-1: #0A2531;
  --st-navy-2: #0E2E3B;
  --st-paper: #EEF3F4;
  --st-surface: #FFFFFF;
  --st-surface-2: #F5F9FB;
  --st-line: #D2DFE6;
  --st-ink: #0C1E29;
  --st-ink-soft: #46606D;
  --st-ink-faint: #7E939E;
  --st-accent: #12A594;
  --st-accent-2: #0B6E8F;
  --st-accent-deep: #084C63;
  --st-accent-wash: #E1F3F0;
  --st-warn: #D98A1F;
  --st-warn-wash: #FBEEDC;
  --st-bad: #D6455C;
  --st-bad-wash: #F9E2E6;
  --st-ok: #1F9D6B;
  --st-ok-wash: #E1F3EC;
  --st-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --st-mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --st-radius: 14px;
  --st-shadow: 0 1px 2px rgba(12, 30, 41, 0.06), 0 8px 24px -12px rgba(12, 30, 41, 0.18);
}

/* ----- Skip link ----- */
.st-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  background: var(--st-accent);
  color: #06222c;
  font: 700 13px/1 var(--st-sans);
  padding: 10px 14px;
  border-radius: 0 0 10px 0;
}
.st-skip:focus {
  left: 0;
}

/* ----- Shared focus ----- */
:focus-visible {
  outline: 2.5px solid var(--st-accent) !important;
  outline-offset: 2px;
}

/* ----- Utility bar (related + actions) ----- */
.st-utilbar {
  max-width: 920px;
  margin: 0 auto;
  padding: 12px 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  font-family: var(--st-sans);
}
.st-utilbar .st-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}
.st-btn {
  appearance: none;
  border: 1.5px solid var(--st-line);
  background: var(--st-surface);
  color: var(--st-ink-soft);
  font: 700 12.5px/1 var(--st-sans);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--st-shadow);
}
.st-btn:hover {
  border-color: #aec6d0;
  color: var(--st-ink);
}
.st-btn:active {
  transform: translateY(1px);
}
.st-btn.primary {
  background: var(--st-navy-1);
  border-color: var(--st-navy-1);
  color: #eaf3f7;
}
.st-btn.ok {
  background: var(--st-ok-wash);
  border-color: #b5e0cc;
  color: var(--st-ok);
}

/* ----- Related tools ----- */
.st-related {
  max-width: 920px;
  margin: 18px auto 0;
  padding: 0 22px 8px;
  font-family: var(--st-sans);
}
.st-related h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--st-ink-faint);
  font-weight: 800;
  margin: 0 0 10px;
}
.st-related-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.st-related-chips a {
  font-size: 12.5px;
  font-weight: 700;
  text-decoration: none;
  color: var(--st-accent-deep);
  background: var(--st-accent-wash);
  border: 1px solid #b7dfd8;
  border-radius: 999px;
  padding: 7px 12px;
}
.st-related-chips a:hover {
  background: #d3efe9;
}

/* ----- Content blocks: How + FAQ (Sprint D) ----- */
.st-content {
  max-width: 920px;
  margin: 8px auto 28px;
  padding: 0 22px;
  font-family: var(--st-sans);
  color: var(--st-ink);
}
.st-card {
  background: var(--st-surface);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  box-shadow: var(--st-shadow);
  padding: 18px 20px;
  margin-bottom: 12px;
}
.st-card h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--st-ink-faint);
  font-weight: 800;
  margin: 0 0 12px;
}
.st-card h3 {
  font-size: 15px;
  margin: 14px 0 6px;
  color: var(--st-accent-deep);
  font-weight: 750;
}
.st-card p,
.st-card li {
  font-size: 14px;
  line-height: 1.55;
  color: var(--st-ink-soft);
  margin: 0 0 8px;
}
.st-card ul {
  margin: 0 0 8px;
  padding-left: 1.2em;
}
.st-card details {
  border-top: 1px solid var(--st-line);
  padding: 10px 0 2px;
}
.st-card details:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.st-card summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--st-ink);
  font-size: 14px;
  list-style: none;
}
.st-card summary::-webkit-details-marker {
  display: none;
}
.st-card summary::before {
  content: "▸ ";
  color: var(--st-accent);
}
.st-card details[open] summary::before {
  content: "▾ ";
}

/* ----- Toast ----- */
.st-toast {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--st-navy-1);
  color: #eaf3f7;
  font: 700 13px/1.3 var(--st-sans);
  padding: 12px 16px;
  border-radius: 12px;
  box-shadow: var(--st-shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 9999;
  max-width: min(92vw, 420px);
  text-align: center;
}
.st-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ----- Role hub pages ----- */
.st-role-page {
  margin: 0;
  background: var(--st-paper);
  color: var(--st-ink);
  font-family: var(--st-sans);
  line-height: 1.5;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
.st-role-hero {
  background: linear-gradient(160deg, var(--st-navy-1), var(--st-navy-2));
  color: #dceaf0;
  border-bottom: 1px solid #06323f;
  padding: 18px 22px 28px;
}
.st-role-hero .top {
  max-width: 920px;
  margin: 0 auto 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.st-role-hero .wordmark {
  font-weight: 800;
  letter-spacing: 0.16em;
  font-size: 12.5px;
  text-transform: uppercase;
  color: #eaf3f7;
}
.st-role-hero .wordmark span {
  color: #3fd6c4;
}
.st-role-hero a.nav {
  color: #8fb1be;
  font-size: 12.5px;
  font-weight: 700;
  text-decoration: none;
  margin-left: auto;
}
.st-role-hero a.nav:hover {
  color: #b9d6e0;
  text-decoration: underline;
}
.st-role-hero .inner {
  max-width: 920px;
  margin: 0 auto;
}
.st-role-hero .eyebrow {
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #56c9d9;
  margin-bottom: 10px;
}
.st-role-hero h1 {
  font-size: clamp(26px, 4.5vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #f4fafc;
  margin: 0 0 12px;
}
.st-role-hero .lede {
  color: #afc9d3;
  max-width: 62ch;
  margin: 0;
}
.st-role-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 26px 22px 60px;
}
.st-role-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.st-role-grid a.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--st-surface);
  border: 1px solid var(--st-line);
  border-radius: var(--st-radius);
  padding: 16px 16px 14px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--st-shadow);
  min-height: 110px;
}
.st-role-grid a.card:hover {
  border-color: #aec6d0;
  transform: translateY(-1px);
}
.st-role-grid h3 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 750;
  color: var(--st-navy-1);
}
.st-role-grid .tag {
  font-size: 12px;
  font-weight: 650;
  color: var(--st-accent-2);
}
.st-role-grid .go {
  margin-top: auto;
  font-size: 12.5px;
  font-weight: 750;
  color: var(--st-accent-deep);
}

/* tools.html role presets */
.st-role-presets {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 18px 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.st-role-presets .lbl {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--st-ink-faint, #7c8c87);
  margin-right: 4px;
}
.st-role-presets a {
  font-size: 12.5px;
  font-weight: 700;
  text-decoration: none;
  color: #0a5b43;
  background: #e8f7f1;
  border: 1px solid #b7e2d2;
  border-radius: 999px;
  padding: 7px 12px;
}
.st-role-presets a:hover {
  background: #d4f0e5;
}

/* ----- Print (Sprint C) ----- */
@media print {
  .st-skip,
  .st-utilbar .st-actions,
  .st-toast,
  .st-role-hero a.nav,
  .topbar-inner a.all-tools,
  a.all-tools,
  .hero .topbar-inner a {
    display: none !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .st-related,
  .st-content {
    break-inside: avoid;
  }
  a[href]::after {
    content: none !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .st-toast,
  .st-role-grid a.card {
    transition: none !important;
  }
}

@media (max-width: 560px) {
  .st-utilbar {
    padding: 10px 14px 0;
  }
  .st-utilbar .st-actions {
    margin-left: 0;
    width: 100%;
  }
  .st-related,
  .st-content {
    padding-left: 14px;
    padding-right: 14px;
  }
}