/* ============================================================
   КадастрМинус — дизайн-система
   Премиум legal/fintech. Палитра navy + gold.
   Богатый интерактив: всё на CSS/ванильном JS, без внешних CDN.
   ============================================================ */

/* ---------- 1. Токены ---------- */
:root {
  /* Фирменные цвета */
  --navy-900: #0c1830;
  --navy-800: #0f1f3a;
  --navy-700: #1a2b4a;
  --navy-600: #24385c;
  --navy-500: #324a73;
  --gold-600: #c9974e;
  --gold-500: #d4a574;
  --gold-400: #e5b87f;
  --gold-300: #f0cd9c;
  --success: #1f9d55;
  --success-soft: #eafaf0;
  --danger: #e0563b;

  /* Нейтральные */
  --ink: #16202e;
  --ink-soft: #5b6677;
  --line: #e7ebf1;
  --paper: #ffffff;
  --paper-2: #f5f7fa;
  --paper-3: #eef2f7;

  /* Типографика */
  --font-sans: "Inter", "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Manrope", "Inter", var(--font-sans);

  /* Скругления */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* Тени */
  --sh-sm: 0 2px 8px rgba(15, 31, 58, .06);
  --sh-md: 0 12px 30px rgba(15, 31, 58, .10);
  --sh-lg: 0 26px 60px rgba(15, 31, 58, .16);
  --sh-gold: 0 16px 40px rgba(212, 165, 116, .35);

  /* Переходы */
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-soft: cubic-bezier(.4, 0, .2, 1);
  --t-fast: .18s var(--ease);
  --t-med: .35s var(--ease);
  --t-slow: .6s var(--ease);

  /* Раскладка */
  --container: 1200px;
  --gutter: clamp(16px, 4vw, 32px);
  --header-h: 76px;
}

/* ---------- 2. Reset / база ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
ul { list-style: none; }

/* ---------- 3. Типографика ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.12; font-weight: 800; letter-spacing: -.02em; }
.h-display { font-size: clamp(2.3rem, 6vw, 4.1rem); }
h2, .h2 { font-size: clamp(1.8rem, 4vw, 2.9rem); }
h3, .h3 { font-size: clamp(1.25rem, 2.2vw, 1.6rem); font-weight: 700; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--ink-soft); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .82rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold-600);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--gold-500); border-radius: 2px; }
.text-grad {
  background: linear-gradient(100deg, var(--gold-400), var(--gold-600));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

/* ---------- 4. Раскладка ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding: clamp(64px, 9vw, 120px) 0; position: relative; }
.section--tight { padding: clamp(48px, 6vw, 80px) 0; }
.section-head { max-width: 760px; margin: 0 auto clamp(36px, 5vw, 64px); text-align: center; }
.section-head .lead { margin-top: 16px; }
.bg-soft { background: var(--paper-2); }
.bg-navy { background: var(--navy-800); color: #fff; }
.grid { display: grid; gap: clamp(18px, 2.4vw, 28px); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 920px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }

/* ---------- 5. Кнопки ---------- */
.btn {
  --bg: var(--gold-500); --fg: var(--navy-800);
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 30px; border: 0; border-radius: var(--r-pill);
  background: var(--bg); color: var(--fg); font-weight: 700; font-size: 1rem;
  cursor: pointer; overflow: hidden; isolation: isolate;
  transition: transform var(--t-fast), box-shadow var(--t-med), background var(--t-med);
  will-change: transform;
}
.btn svg { width: 20px; height: 20px; }
.btn:hover { transform: translateY(-3px); box-shadow: var(--sh-gold); }
.btn:active { transform: translateY(-1px) scale(.99); }
.btn--primary { --bg: linear-gradient(120deg, var(--gold-400), var(--gold-600)); }
.btn--lg { padding: 18px 38px; font-size: 1.08rem; }
.btn--ghost { --bg: transparent; --fg: #fff; box-shadow: inset 0 0 0 2px rgba(255,255,255,.35); }
.btn--ghost:hover { --bg: rgba(255,255,255,.08); box-shadow: inset 0 0 0 2px var(--gold-400); }
.btn--dark { --bg: var(--navy-700); --fg: #fff; }
.btn--dark:hover { box-shadow: var(--sh-md); }
.btn--block { width: 100%; }
/* ripple-эффект (наполняется из JS) */
.ripple { position: absolute; border-radius: 50%; transform: scale(0); background: rgba(255,255,255,.45); pointer-events: none; animation: ripple .6s var(--ease-soft); z-index: -1; }
@keyframes ripple { to { transform: scale(2.6); opacity: 0; } }

/* ---------- 6. Карточки ---------- */
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: clamp(22px, 2.4vw, 32px); box-shadow: var(--sh-sm);
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
  position: relative; overflow: hidden; height: 100%;
}
.card::after { /* верхняя градиентная полоска, проявляется на hover */
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--gold-400), var(--gold-600));
  transform: scaleX(0); transform-origin: left; transition: transform var(--t-med);
}
.card:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); border-color: transparent; }
.card:hover::after { transform: scaleX(1); }
.card__icon {
  width: 60px; height: 60px; border-radius: 16px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-500)); color: var(--gold-400);
  margin-bottom: 18px; box-shadow: var(--sh-md); transition: transform var(--t-med);
}
.card:hover .card__icon { transform: translateY(-4px) rotate(-6deg) scale(1.06); }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--ink-soft); font-size: .98rem; }
.card--glass { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.16); backdrop-filter: blur(10px); color: #fff; }
.card--glass p { color: rgba(255,255,255,.78); }

/* бейджи */
.badge { display: inline-flex; align-items: center; gap: 7px; padding: 6px 13px; border-radius: var(--r-pill); font-size: .8rem; font-weight: 700; background: var(--success-soft); color: var(--success); }
.badge--gold { background: rgba(212,165,116,.16); color: var(--gold-600); }
.badge--ghost { background: rgba(255,255,255,.1); color: #fff; }

/* ---------- 7. Формы ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 7px; }
.input, .select, textarea.input {
  width: 100%; padding: 14px 16px; border: 1.5px solid var(--line); border-radius: var(--r-sm);
  background: var(--paper); transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.input:focus, .select:focus, textarea.input:focus {
  outline: 0; border-color: var(--gold-500); box-shadow: 0 0 0 4px rgba(212,165,116,.16);
}
.field--dark label { color: rgba(255,255,255,.85); }
.field--dark .input, .field--dark .select {
  background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.18); color: #fff;
}
.field--dark .input::placeholder { color: rgba(255,255,255,.5); }
.field--dark .select option { color: var(--ink); }

/* ---------- 8. Тултип-подсказки ---------- */
.tip { position: relative; border-bottom: 1.5px dashed var(--gold-500); cursor: help; }
.tip::after {
  content: attr(data-tip); position: absolute; left: 50%; bottom: calc(100% + 10px); transform: translate(-50%, 6px);
  width: max-content; max-width: 280px; padding: 10px 14px; border-radius: var(--r-sm);
  background: var(--navy-800); color: #fff; font-size: .85rem; font-weight: 500; line-height: 1.45;
  box-shadow: var(--sh-md); opacity: 0; pointer-events: none; transition: opacity var(--t-fast), transform var(--t-fast); z-index: 50;
}
.tip::before {
  content: ""; position: absolute; left: 50%; bottom: calc(100% + 4px); transform: translateX(-50%);
  border: 7px solid transparent; border-top-color: var(--navy-800); opacity: 0; transition: opacity var(--t-fast); z-index: 50;
}
.tip:hover::after, .tip:focus::after { opacity: 1; transform: translate(-50%, 0); }
.tip:hover::before { opacity: 1; }

/* ---------- 9. Анимационный движок (scroll-reveal) ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; }
[data-reveal="left"] { transform: translateX(-40px); }
[data-reveal="right"] { transform: translateX(40px); }
[data-reveal="scale"] { transform: scale(.92); }
[data-reveal].in { opacity: 1; transform: none; }
/* каскад (stagger) задаётся переменной --d из JS */
[data-reveal] { transition-delay: var(--d, 0s); }

/* плавающие / пульсация / вращение */
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes floatX { 0%,100% { transform: translate(0,0); } 50% { transform: translate(10px,-10px); } }
@keyframes pulseRing { 0% { transform: scale(.9); opacity: .7; } 70% { transform: scale(1.5); opacity: 0; } 100% { opacity: 0; } }
@keyframes spinSlow { to { transform: rotate(360deg); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.float { animation: float 6s var(--ease-soft) infinite; }
.float--slow { animation: float 9s var(--ease-soft) infinite; }
.spin-slow { animation: spinSlow 26s linear infinite; }

/* ---------- 10. Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: 100;
  display: flex; align-items: center;
  transition: background var(--t-med), box-shadow var(--t-med), backdrop-filter var(--t-med);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-header.scrolled { background: rgba(12,24,48,.86); backdrop-filter: blur(14px); box-shadow: var(--sh-md); }
.site-header--solid { background: var(--navy-800); box-shadow: var(--sh-md); }
.site-header--solid.scrolled { background: rgba(12,24,48,.94); }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; color: #fff; }
.brand b { color: var(--gold-400); }
.brand .logo-mark { width: 38px; height: 38px; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { color: rgba(255,255,255,.82); font-weight: 600; font-size: .96rem; position: relative; transition: color var(--t-fast); }
.nav a::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 100%; height: 2px; background: var(--gold-400); transform: scaleX(0); transform-origin: right; transition: transform var(--t-med); }
.nav a:hover { color: #fff; }
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.header-phone { color: var(--gold-400); font-weight: 700; white-space: nowrap; }
.burger { display: none; width: 44px; height: 44px; border: 0; background: rgba(255,255,255,.1); border-radius: 12px; cursor: pointer; }
.burger span, .burger span::before, .burger span::after { content: ""; position: absolute; width: 20px; height: 2px; background: #fff; left: 12px; transition: var(--t-fast); }
.burger span { top: 21px; } .burger span::before { top: -6px; } .burger span::after { top: 6px; }
@media (max-width: 940px) {
  .nav, .header-phone { display: none; }
  .burger { display: block; position: relative; }
  .nav.open { display: flex; position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; background: var(--navy-800); padding: 22px var(--gutter); gap: 18px; box-shadow: var(--sh-lg); }
}
@media (max-width: 600px) { .header-actions .btn { display: none; } }

/* ---------- 11. Footer ---------- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,.72); padding: clamp(48px,6vw,80px) 0 28px; }
.site-footer a:hover { color: var(--gold-400); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.4fr; gap: 32px; margin-bottom: 36px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer-grid li { margin-bottom: 9px; font-size: .94rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 22px; font-size: .85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.socials { display: flex; gap: 12px; }
.socials a { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: rgba(255,255,255,.08); transition: transform var(--t-fast), background var(--t-fast); }
.socials a:hover { transform: translateY(-3px); background: var(--gold-500); color: var(--navy-800); }

/* ---------- 12. Утилиты ---------- */
.center { text-align: center; }
.mt-s { margin-top: 16px; } .mt-m { margin-top: 28px; } .mt-l { margin-top: 44px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row--center { justify-content: center; align-items: center; }
.hidden { display: none !important; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 16px; top: 16px; z-index: 200; background: #fff; padding: 10px 16px; border-radius: 8px; }