/* SBF Edu — общий стиль книги. Кремовая тема платформы. */
:root {
  --cream: #FBF6EF;
  --paper: #FFFFFF;
  --line:  #E7DFCF;
  --ink:   #2B2B33;
  --muted: #8A8275;
  --gold:  #C9A227;
  --glow:  #E6C257;
  --up:    #1e8e5a;
  --down:  #c0392b;
  --signal:#b07d18;
}

/* ── Шрифты (override DM Sans / DM Serif где применимо) ── */
body {
  font-family: Montserrat, 'DM Sans', system-ui, sans-serif;
  background: var(--cream) !important;
}
.mono, code, pre {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
}

/* ── Бренд-акценты (override старого золота #c9973a) ── */
:root {
  --edu-gold: #C9A227;
  --edu-dark: #2B2B33;
}

/* ── Навигационная панель глав (инжектируется сервером) ── */
.edu-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--paper);
  border-top: 1px solid var(--line);
  box-shadow: 0 -2px 12px rgba(43,43,51,.06);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  height: 48px;
  padding: 0 8px;
}
.edu-nav a, .edu-nav button {
  display: flex; align-items: center; justify-content: center;
  height: 100%;
  padding: 0 14px;
  color: var(--muted);
  text-decoration: none;
  border: none; background: none; cursor: pointer;
  font-family: inherit; font-size: inherit;
  transition: color .15s;
  white-space: nowrap;
}
.edu-nav a:hover, .edu-nav button:hover { color: var(--ink); }
.edu-nav .nav-prev::before { content: '←  '; }
.edu-nav .nav-next::after  { content: '  →'; }
.edu-nav .nav-toc {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: .3px;
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
.edu-nav .nav-toc:hover { color: var(--glow); }
.edu-nav .nav-counter {
  color: var(--muted);
  font-size: 11px;
  padding: 0 10px;
  border-right: 1px solid var(--line);
  pointer-events: none;
}
.edu-nav .nav-live {
  margin-left: auto;
  background: rgba(201,162,39,.12);
  border: 1px solid var(--gold);
  border-radius: 6px;
  color: var(--signal);
  padding: 0 12px;
  font-size: 11px;
  height: 30px;
  font-weight: 700;
  letter-spacing: .3px;
  text-decoration: none;
  display: flex; align-items: center; gap: 6px;
  margin-right: 4px;
  transition: background .15s;
}
.edu-nav .nav-live:hover { background: rgba(201,162,39,.22); color: var(--gold); }
.edu-nav .nav-live::before { content: '⬤ '; font-size: 7px; color: var(--up); }

/* ── Прогресс-бар вверху страницы ── */
.edu-progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: var(--gold);
  z-index: 1000;
  transition: width .3s;
}

/* ── Дисклеймер ── */
.edu-disclaimer {
  margin: 32px auto 80px;
  max-width: 780px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(201,162,39,.05);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted);
  line-height: 1.6;
  letter-spacing: .2px;
}
.edu-disclaimer strong { color: var(--signal); }

/* ── lang-bar: заменяем старое золото на бренд ── */
.lang-links a.active {
  color: var(--gold) !important;
  border-bottom-color: var(--gold) !important;
}

/* ── Отступ снизу чтобы edu-nav не перекрывал контент ── */
#sbf-book-root { padding-bottom: 56px; }

/* ── Wire-1: встраиваемые виджеты ── */
.sbf-widget {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 0 0 24px;
}
.sbf-widget-head {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.sbf-sect-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 20px 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sbf-sect-n {
  background: var(--line);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 9px;
}

/* Калькулятор */
.sbf-calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.sbf-panel {
  background: rgba(201,162,39,.04);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
}
.sbf-panel-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 2px;
}
.sbf-panel-sub {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 12px;
}
.sbf-field {
  margin-bottom: 8px;
}
.sbf-field label {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 3px;
}
.sbf-field input {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
}
.sbf-field input:focus { outline: none; border-color: var(--gold); }
.sbf-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sbf-out {
  margin-top: 12px;
  padding: 10px;
  background: var(--cream);
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}
.sbf-o-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  border-bottom: 1px solid var(--line);
}
.sbf-o-row:last-child { border-bottom: none; }
.sbf-o-k { color: var(--muted); }
.sbf-o-v { font-weight: 700; color: var(--ink); }
.sbf-o-v.pos { color: var(--up); }
.sbf-o-v.neg { color: var(--down); }
.sbf-o-v.gold { color: var(--gold); }
.sbf-verdict {
  margin-top: 10px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
}
.sbf-seg {
  display: flex;
  gap: 4px;
  margin-bottom: 10px;
}
.sbf-seg-btn {
  flex: 1;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: none;
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  transition: all .15s;
}
.sbf-seg-btn.active {
  background: var(--gold);
  color: #fff;
  border-color: var(--gold);
}

/* Галерея паттернов */
.sbf-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.sbf-pat-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sbf-pat-card svg { width: 100%; height: auto; border-radius: 6px; }
.sbf-pat-name { font-size: 12px; font-weight: 700; color: var(--ink); }
.sbf-pat-desc { font-size: 11px; color: var(--muted); line-height: 1.4; }

/* CTA */
.sbf-cta {
  max-width: 780px;
  margin: 32px auto 0;
  padding: 0 24px;
}
.sbf-cta a {
  display: block;
  padding: 14px 20px;
  background: var(--gold);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .5px;
  text-decoration: none;
  border-radius: 10px;
  text-align: center;
  transition: opacity .15s;
}
.sbf-cta a:hover { opacity: .88; }