:root {
  --color-primary: #0F172A;
  --color-on-primary: #FFFFFF;
  --color-secondary: #334155;
  --color-accent: #0369A1;
  --color-on-accent: #FFFFFF;
  --color-background: #F8FAFC;
  --color-foreground: #020617;
  --color-card: #FFFFFF;
  --color-muted: #E8ECF1;
  --color-muted-foreground: #475569;
  --color-border: #E2E8F0;
  --color-destructive: #DC2626;
  --color-success: #15803D;
  --color-ring: #0369A1;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-width: 960px;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: "Plus Jakarta Sans", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--color-accent); }

button {
  font-family: inherit;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-on-primary);
  color: var(--color-primary);
  padding: 8px 12px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* Шапка-предупреждение */
.demo-banner {
  background: #FEF3C7;
  color: #78350F;
  text-align: center;
  padding: 10px 16px;
  font-size: 14px;
  border-bottom: 1px solid #FDE68A;
}
.demo-banner strong { font-weight: 700; }

/* Верхняя панель */
.topbar {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.topbar__title {
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.topbar__subtitle {
  color: #CBD5E1;
  font-weight: 400;
  font-size: 14px;
  margin-left: var(--space-2);
}

/* Навигация по разделам */
.tabs {
  display: flex;
  gap: var(--space-2);
  background: var(--color-primary);
  padding: 0 var(--space-8) var(--space-2);
  border-bottom: 1px solid #1E293B;
}
.tab {
  background: transparent;
  border: none;
  color: #CBD5E1;
  padding: 10px 18px;
  border-radius: 8px 8px 0 0;
  font-size: 15px;
  font-weight: 600;
  min-height: 44px;
  transition: background-color 150ms ease, color 150ms ease;
}
.tab:hover { background: #1E293B; color: #fff; }
.tab[aria-current="page"] {
  background: var(--color-background);
  color: var(--color-primary);
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--space-8);
}

.panel { display: none; }
.panel.is-active { display: block; }

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

h1 { font-size: 26px; margin: 0 0 var(--space-2); }
h2 { font-size: 20px; margin: 0 0 var(--space-4); }
h3 { font-size: 16px; margin: 0; }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  color: var(--color-muted-foreground);
  font-size: 14px;
  margin-bottom: var(--space-4);
}

.chip-list { display: flex; flex-wrap: wrap; gap: var(--space-2); list-style: none; padding: 0; margin: 0; }
.chip {
  background: var(--color-muted);
  color: var(--color-secondary);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
}
.chip .role { color: var(--color-muted-foreground); }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.badge--ok { background: #DCFCE7; color: var(--color-success); }
.badge--warn { background: #FEF9C3; color: #854D0E; }
.badge--off { background: #FEE2E2; color: var(--color-destructive); }
.badge--info { background: #DBEAFE; color: #1D4ED8; }

.utterance {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-2);
  border-radius: 8px;
  scroll-margin-top: 140px;
}
.utterance__time { color: var(--color-muted-foreground); font-size: 13px; width: 48px; flex-shrink: 0; padding-top: 2px; }
.utterance__speaker { font-weight: 700; margin-bottom: 2px; }
.utterance.is-highlighted {
  background: #FEF3C7;
  outline: 2px solid #D97706;
  animation: fade-highlight 2.4s ease-out;
}
@keyframes fade-highlight {
  0% { background: #FDE68A; }
  100% { background: #FEF3C7; }
}
@media (prefers-reduced-motion: reduce) {
  .utterance.is-highlighted { animation: none; }
}

.decision-card, .commitment-card {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}
.decision-card__head, .commitment-card__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}
.card-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-3);
  gap: var(--space-4);
  flex-wrap: wrap;
}
.field-group { font-size: 14px; color: var(--color-muted-foreground); }
.field-group strong { color: var(--color-foreground); display: block; font-size: 15px; font-weight: 600; }

.source-link {
  font-size: 13px;
  text-decoration: underline;
  background: none;
  border: none;
  color: var(--color-accent);
  padding: 0;
}
.source-link:hover { color: var(--color-primary); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 16px;
  min-height: 44px;
  transition: background-color 150ms ease, box-shadow 150ms ease;
}
.btn--primary { background: var(--color-accent); color: var(--color-on-accent); }
.btn--primary:hover { background: #075985; }
.btn--primary:disabled { background: var(--color-muted); color: var(--color-muted-foreground); cursor: default; }
.btn--ghost { background: transparent; border-color: var(--color-border); color: var(--color-secondary); }

.spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.5);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 1.6s; } }
@keyframes spin { to { transform: rotate(360deg); } }

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-primary);
  color: #fff;
  padding: 14px 18px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(2,6,23,0.25);
  max-width: 360px;
  font-size: 14px;
  display: none;
}
.toast.is-visible { display: block; }

.search-form { display: flex; gap: var(--space-3); margin-bottom: var(--space-2); }
.search-form label { font-weight: 600; display: block; margin-bottom: 6px; }
.search-form input[type="text"] {
  flex: 1;
  padding: 10px 14px;
  font-size: 15px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  min-height: 44px;
}
.search-examples { margin: var(--space-3) 0 var(--space-6); }
.search-examples__label { font-size: 13px; color: var(--color-muted-foreground); margin-bottom: 6px; }
.chip-btn {
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--color-secondary);
  margin: 0 var(--space-2) var(--space-2) 0;
}
.chip-btn:hover { background: #DCE3EC; }

.search-answer {
  border-left: 4px solid var(--color-accent);
  padding: var(--space-4);
  background: #F0F9FF;
  border-radius: 0 10px 10px 0;
}
.search-answer__label { font-size: 13px; font-weight: 700; color: var(--color-accent); text-transform: uppercase; letter-spacing: .03em; margin-bottom: 6px; }
.search-answer__empty { color: var(--color-muted-foreground); }

.footer-note {
  text-align: center;
  color: var(--color-muted-foreground);
  font-size: 13px;
  padding: var(--space-6) var(--space-8) var(--space-8);
}

.scenario-box {
  border: 1px dashed var(--color-border);
  border-radius: 10px;
  padding: var(--space-4);
  background: var(--color-muted);
  margin-bottom: var(--space-6);
}
.scenario-box ol { margin: 8px 0 0 20px; padding: 0; }
.scenario-box li { margin-bottom: 4px; }
.scenario-box summary { cursor: pointer; font-weight: 700; }