/* ============================================================
   buro — дизайн-система (поверх Bootstrap 5.3, локально)
   Тёплый светлый фон (не белый), глубокий синий акцент,
   многослойные мягкие тени (Notion-style), pill-скругления.
   ============================================================ */

:root {
  /* Тёплая нейтральная палитра — фон НЕ белый, с кремовым подтоном */
  --buro-bg:            #F6F4EF;
  --buro-bg-alt:        #EFECE4;
  --buro-surface:       #FFFFFF;
  --buro-surface-soft:  #FBF9F5;
  --buro-ink:           #221F1A;   /* тёплый почти-чёрный */
  --buro-ink-soft:      #57534E;   /* тёплый серый, вторичный текст */
  --buro-ink-muted:     #A8A29E;   /* приглушённый */

  /* Акценты */
  --buro-primary:       #1B4BEF;   /* глубокий синий */
  --buro-primary-dark:  #1439C4;
  --buro-primary-soft:  #E8EDFF;
  --buro-teal:          #0EA5A4;   /* бирюзовый */
  --buro-teal-soft:     #DFF5F4;
  --buro-amber:         #F59E0B;   /* янтарный */
  --buro-amber-soft:    #FEF1DC;
  --buro-rose:          #E85D75;   /* розовый */
  --buro-rose-soft:     #FDE7EB;
  --buro-violet:        #7C5CF0;
  --buro-violet-soft:   #EDE8FE;
  --buro-green:         #16A34A;
  --buro-green-soft:    #E3F6E9;

  /* Тени — многослойные, как у Notion */
  --buro-shadow-sm:
    0 1px 2px rgba(34, 31, 26, 0.04),
    0 2px 6px rgba(34, 31, 26, 0.04);
  --buro-shadow-md:
    0 1px 2px rgba(34, 31, 26, 0.03),
    0 4px 10px rgba(34, 31, 26, 0.04),
    0 12px 28px rgba(34, 31, 26, 0.06);
  --buro-shadow-lg:
    0 2px 4px rgba(34, 31, 26, 0.03),
    0 8px 16px rgba(34, 31, 26, 0.04),
    0 20px 40px rgba(34, 31, 26, 0.07),
    0 44px 80px rgba(34, 31, 26, 0.08);

  --buro-radius-sm: 10px;
  --buro-radius-md: 16px;
  --buro-radius-lg: 24px;
  --buro-radius-pill: 999px;

  /* Переопределяем Bootstrap-переменные */
  --bs-body-bg: var(--buro-bg);
  --bs-body-color: var(--buro-ink);
  --bs-primary: var(--buro-primary);
  --bs-primary-rgb: 27, 75, 239;
  --bs-link-color: var(--buro-primary);
  --bs-link-hover-color: var(--buro-primary-dark);
  --bs-border-radius: var(--buro-radius-md);
  --bs-font-sans-serif: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--buro-bg);
  color: var(--buro-ink);
  font-family: var(--bs-font-sans-serif);
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Типографика ---------- */
.display-hero {
  font-size: clamp(2.4rem, 5.2vw, 3.9rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--buro-ink);
}
.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.lead-buro { font-size: 1.15rem; line-height: 1.6; color: var(--buro-ink-soft); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--buro-primary);
  background: var(--buro-primary-soft);
  padding: 6px 14px; border-radius: var(--buro-radius-pill);
}

/* ---------- Навбар ---------- */
.buro-nav {
  background: rgba(246, 244, 239, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(34, 31, 26, 0.06);
}
.buro-nav .nav-link {
  color: var(--buro-ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 14px !important;
  border-radius: var(--buro-radius-pill);
  transition: color .15s ease, background .15s ease;
}
.buro-nav .nav-link:hover { color: var(--buro-ink); background: rgba(34,31,26,0.05); }
.buro-logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.35rem; letter-spacing: -0.03em;
  color: var(--buro-ink); text-decoration: none;
}
.buro-logo-mark {
  width: 38px; height: 38px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1B4BEF 0%, #7C5CF0 100%);
  color: #fff; font-size: 1.15rem;
  box-shadow: 0 4px 12px rgba(27, 75, 239, 0.3);
}

/* ---------- Кнопки ---------- */
.btn-buro {
  border-radius: var(--buro-radius-pill);
  padding: 10px 22px;
  font-weight: 700;
  font-size: 0.97rem;
  transition: transform .12s ease, box-shadow .15s ease, background .15s ease;
}
.btn-buro-primary {
  background: var(--buro-primary); color: #fff; border: none;
  box-shadow: 0 4px 14px rgba(27, 75, 239, 0.32);
}
.btn-buro-primary:hover { background: var(--buro-primary-dark); color: #fff; transform: translateY(-1px); }
.btn-buro-ghost {
  background: #fff; color: var(--buro-ink); border: 1px solid rgba(34,31,26,0.12);
}
.btn-buro-ghost:hover { background: var(--buro-surface-soft); color: var(--buro-ink); transform: translateY(-1px); box-shadow: var(--buro-shadow-sm); }

/* ---------- Карточки ---------- */
.card-buro {
  background: var(--buro-surface);
  border: 1px solid rgba(34, 31, 26, 0.07);
  border-radius: var(--buro-radius-lg);
  box-shadow: var(--buro-shadow-md);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card-buro:hover { transform: translateY(-4px); box-shadow: var(--buro-shadow-lg); }

.icon-tile {
  width: 52px; height: 52px; border-radius: 15px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.45rem; flex-shrink: 0;
}
.icon-tile-blue   { background: var(--buro-primary-soft); color: var(--buro-primary); }
.icon-tile-teal   { background: var(--buro-teal-soft);    color: var(--buro-teal); }
.icon-tile-amber  { background: var(--buro-amber-soft);   color: #D97A06; }
.icon-tile-rose   { background: var(--buro-rose-soft);    color: var(--buro-rose); }
.icon-tile-violet { background: var(--buro-violet-soft);  color: var(--buro-violet); }
.icon-tile-green  { background: var(--buro-green-soft);   color: var(--buro-green); }

/* ---------- Бейджи ---------- */
.badge-buro {
  border-radius: var(--buro-radius-pill);
  font-weight: 700; font-size: 0.75rem; letter-spacing: 0.01em;
  padding: 6px 12px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(640px 420px at 12% 18%, rgba(27, 75, 239, 0.10), transparent 65%),
    radial-gradient(560px 400px at 88% 22%, rgba(124, 92, 240, 0.10), transparent 65%),
    radial-gradient(480px 360px at 60% 90%, rgba(14, 165, 164, 0.08), transparent 65%);
  pointer-events: none;
}
.hero-stats .h2 { font-weight: 800; letter-spacing: -0.03em; }
.hero-stats .text-muted-buro { color: var(--buro-ink-muted); font-size: 0.92rem; font-weight: 500; }

/* ---------- Секции ---------- */
.section-alt { background: var(--buro-bg-alt); }
.section-surface { background: var(--buro-surface); }

/* ---------- Шаги ---------- */
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--buro-primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.05rem;
  box-shadow: 0 4px 12px rgba(27, 75, 239, 0.3);
}

/* ---------- CTA-плашка ---------- */
.cta-panel {
  background: linear-gradient(120deg, #16255E 0%, #1B4BEF 55%, #7C5CF0 110%);
  border-radius: 28px;
  color: #fff;
  box-shadow: 0 24px 60px rgba(27, 75, 239, 0.30);
  position: relative;
  overflow: hidden;
}
.cta-panel::after {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(400px 260px at 90% 10%, rgba(255,255,255,0.14), transparent 60%),
    radial-gradient(300px 200px at 8% 100%, rgba(255,255,255,0.08), transparent 60%);
  pointer-events: none;
}

/* ---------- Футер ---------- */
.footer-buro {
  background: #211E19;
  color: #A8A29E;
}
.footer-buro a { color: #D6D3CF; text-decoration: none; }
.footer-buro a:hover { color: #fff; }
.footer-buro .buro-logo { color: #fff; }

/* ---------- Формы ---------- */
.form-control-buro, .form-select-buro {
  border-radius: var(--buro-radius-sm);
  border: 1px solid rgba(34, 31, 26, 0.14);
  padding: 10px 14px;
  font-size: 0.97rem;
}
.form-control-buro:focus, .form-select-buro:focus {
  border-color: var(--buro-primary);
  box-shadow: 0 0 0 4px rgba(27, 75, 239, 0.12);
}

/* ---------- Анимации ---------- */
@keyframes float-in {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.float-in { animation: float-in .6s ease both; }
.delay-1 { animation-delay: .08s; }
.delay-2 { animation-delay: .16s; }
.delay-3 { animation-delay: .24s; }
.delay-4 { animation-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  .float-in { animation: none; }
  html { scroll-behavior: auto; }
}