/* =========================================================================
   ИП Файзуллин Радик — лендинг
   Дизайн-идея: «инженерный чертёж + тёплый свет в окне зимой».
   Палитра: графит/слейт (строгость, доверие) + бумага + один тёплый
   янтарный акцент (свет в окнах круглогодичного дома).
   Шрифты: Bricolage Grotesque (заголовки), Manrope (текст),
   JetBrains Mono (технические подписи/размеры — как на чертеже).
   ========================================================================= */

:root {
  --ink:      #131c26;   /* глубокий графит — тёмные секции */
  --ink-2:    #1b2734;   /* поверхности на тёмном */
  --ink-3:    #26384a;   /* линии/границы на тёмном */
  --paper:    #f6f5f1;   /* тёплый «бумажный» фон */
  --paper-2:  #eceae3;   /* вторичный фон */
  --line:     #d7d3c8;   /* светлый разделитель */
  --steel:    #6f8294;   /* холодный «чертёжный» серо-голубой */
  --steel-2:  #93a4b3;
  --amber:    #e2a23b;   /* тёплый акцент — свет в окне */
  --amber-d:  #c5852a;
  --amber-soft: rgba(226,162,59,0.14);
  --text:     #18222c;   /* основной текст на бумаге */
  --text-2:   #54616b;   /* приглушённый текст */
  --white:    #ffffff;
  --ok:       #3f9d6b;

  --radius:   5px;       /* небольшой радиус — «строго» */
  --maxw:     1180px;
  --gutter:   clamp(18px, 5vw, 40px);

  --font-display: 'Bricolage Grotesque', 'Manrope', system-ui, sans-serif;
  --font-body:    'Manrope', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SFMono-Regular', monospace;

  --shadow: 0 18px 50px -24px rgba(19,28,38,0.45);
  --shadow-sm: 0 6px 20px -12px rgba(19,28,38,0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 .4em;
}
h1 { font-size: clamp(2.1rem, 5.2vw, 3.7rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
p  { margin: 0 0 1rem; }
a  { color: inherit; }
img, svg { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

section { padding-block: clamp(56px, 9vw, 110px); }

.lead { font-size: 1.12rem; color: var(--text-2); max-width: 56ch; }
.center { text-align: center; }
.muted { color: var(--text-2); }

/* ---- «чертёжная» подпись-эйброу: номер + линия с засечками ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 20px;
}
.eyebrow__num { color: var(--amber-d); font-weight: 600; }
.eyebrow__tick {
  width: 38px; height: 1px; background: currentColor; position: relative; opacity: .7;
}
.eyebrow__tick::before, .eyebrow__tick::after {
  content: ""; position: absolute; top: -3px; width: 1px; height: 7px; background: currentColor;
}
.eyebrow__tick::before { left: 0; }
.eyebrow__tick::after { right: 0; }
section.dark .eyebrow { color: var(--steel-2); }
section.dark .eyebrow__num { color: var(--amber); }

/* ---- кнопки ---- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body); font-weight: 700; font-size: .98rem;
  padding: 15px 26px; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  line-height: 1;
}
.btn--primary { background: var(--amber); color: #2a1c06; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--amber-d); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: white; border-color: var(--line); }
.btn--ghost:hover { border-color: white; }
section.dark .btn--ghost { color: var(--white); border-color: var(--ink-3); }
section.dark .btn--ghost:hover { border-color: var(--steel-2); }
.btn--block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: .6; cursor: not-allowed; transform: none; }

/* =========================================================================
   ХЕДЕР
   ========================================================================= */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
  padding-block: 16px;
}
.header.scrolled {
  background: rgba(19,28,38,0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--ink-3);
  padding-block: 10px;
}
.header__row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--white); }
.brand__mark { width: 34px; height: 34px; flex: none; }
.brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; letter-spacing: -.01em; line-height: 1; }
.brand__sub { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .18em; color: var(--steel-2); text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { color: rgba(255,255,255,.82); text-decoration: none; font-size: .95rem; font-weight: 500; }
.nav a:hover { color: var(--amber); }
.header__actions { display: flex; align-items: center; gap: 18px; }
.header__phone { color: var(--white); text-decoration: none; font-weight: 700; font-size: 1rem; white-space: nowrap; }
.header__phone:hover { color: var(--amber); }
.burger { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.burger span { display: block; width: 24px; height: 2px; background: var(--white); margin: 5px 0; transition: .25s; }

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
  position: relative; color: var(--white);
  background: var(--ink);
  padding-top: clamp(120px, 18vw, 170px);
  padding-bottom: clamp(60px, 9vw, 100px);
  overflow: hidden;
}
/* «чертёжная» сетка */
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(111,130,148,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(111,130,148,.10) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, #000 40%, transparent 90%);
          mask-image: radial-gradient(120% 90% at 70% 0%, #000 40%, transparent 90%);
}
.hero__grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center;
}
.hero__loc {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--amber); margin-bottom: 22px;
}
.hero h1 { color: var(--white); }
.hero h1 .accent { color: var(--amber); }
.hero__sub { color: rgba(231,237,242,.78); font-size: 1.15rem; max-width: 48ch; margin: 18px 0 30px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero__chips { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 34px; }
.chip { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; color: rgba(231,237,242,.82); }
.chip svg { width: 18px; height: 18px; color: var(--amber); flex: none; }

.hero__art { position: relative; }
.hero__art svg { width: 100%; height: auto; filter: drop-shadow(0 30px 50px rgba(0,0,0,.35)); }
.hero__artcap {
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--steel-2); text-align: right; margin-top: 10px;
}

/* =========================================================================
   STATS
   ========================================================================= */
.stats { background: var(--ink-2); color: var(--white); padding-block: 0; }
.stats__row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink-3);
}
.stat { padding: 30px 24px; border-right: 1px solid var(--ink-3); }
.stat:last-child { border-right: 0; }
.stat__num { font-family: var(--font-display); font-weight: 700; font-size: clamp(2rem, 4vw, 2.9rem); color: var(--amber); line-height: 1; }
.stat__num small { font-size: .5em; color: var(--white); margin-left: 2px; }
.stat__label { color: rgba(231,237,242,.7); font-size: .92rem; margin-top: 8px; }

/* =========================================================================
   ПРЕИМУЩЕСТВА
   ========================================================================= */
.adv__head { max-width: 60ch; margin-bottom: 46px; }
.adv__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.adv__item { background: var(--paper); padding: 30px 28px; }
.adv__item:hover { background: var(--white); }
.adv__icon { width: 40px; height: 40px; color: var(--amber-d); margin-bottom: 16px; }
.adv__item h3 { margin-bottom: 8px; }
.adv__item p { color: var(--text-2); font-size: .98rem; margin: 0; }

/* =========================================================================
   ПРОЕКТЫ / ПЛАНИРОВКИ
   ========================================================================= */
.projects { background: var(--paper-2); }
.proj__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 44px; }
.proj {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: transform .2s ease, box-shadow .2s ease;
}
.proj:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.proj__plan { background: #fbfaf6; border-bottom: 1px solid var(--line); padding: 18px; }
.proj__plan svg { width: 100%; height: auto; }
.proj__body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.proj__tag { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--amber-d); margin-bottom: 8px; }
.proj h3 { margin-bottom: 12px; }
.proj__specs { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: .9rem; color: var(--text-2); margin-bottom: 18px; }
.proj__specs b { color: var(--text); font-weight: 700; }
.proj__foot { margin-top: auto; }

/* =========================================================================
   ЭТАПЫ
   ========================================================================= */
.steps { background: var(--ink); color: var(--white); }
.steps__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--ink-3); border: 1px solid var(--ink-3); border-radius: var(--radius); overflow: hidden; margin-top: 44px; }
.step { background: var(--ink-2); padding: 30px 28px; }
.step__num { font-family: var(--font-mono); font-size: .82rem; color: var(--amber); letter-spacing: .1em; margin-bottom: 14px; }
.step h3 { color: var(--white); margin-bottom: 8px; }
.step p { color: rgba(231,237,242,.72); font-size: .95rem; margin: 0; }

/* =========================================================================
   О КОМПАНИИ
   ========================================================================= */
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about__media { background: var(--ink); border-radius: var(--radius); aspect-ratio: 4/3; overflow: hidden; position: relative; }
.about__media img { width: 100%; height: 100%; object-fit: cover; }
.about__placeholder { width: 100%; height: 100%; display: grid; place-items: center; color: var(--steel-2); font-family: var(--font-mono); font-size: .8rem; letter-spacing: .1em; text-align: center; padding: 20px; }
.about ul { list-style: none; padding: 0; margin: 22px 0 28px; }
.about li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.about li svg { width: 20px; height: 20px; color: var(--amber-d); flex: none; margin-top: 3px; }

/* =========================================================================
   ОТЗЫВЫ
   ========================================================================= */
.reviews { background: var(--paper-2); }
.rev__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; }
.rev { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.rev__stars { color: var(--amber); letter-spacing: 2px; margin-bottom: 14px; }
.rev p { font-size: 1rem; }
.rev__who { display: flex; align-items: center; gap: 12px; margin-top: 18px; }
.rev__ava { width: 42px; height: 42px; border-radius: 50%; background: var(--ink); color: var(--amber); display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; flex: none; }
.rev__name { font-weight: 700; font-size: .95rem; }
.rev__meta { color: var(--text-2); font-size: .85rem; }

/* =========================================================================
   FAQ
   ========================================================================= */
.faq__list { max-width: 820px; margin: 40px auto 0; border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  display: flex; justify-content: space-between; gap: 20px; align-items: center;
  padding: 22px 4px; font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; color: var(--text);
}
.faq__q .ic { width: 22px; height: 22px; flex: none; color: var(--amber-d); transition: transform .25s ease; }
.faq__item.open .ic { transform: rotate(45deg); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq__a p { padding: 0 4px 22px; margin: 0; color: var(--text-2); }

/* =========================================================================
   ФИНАЛЬНЫЙ CTA + ФОРМА
   ========================================================================= */
.cta { background: var(--ink); color: var(--white); }
.cta__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.cta h2 { color: var(--white); }
.cta__sub { color: rgba(231,237,242,.78); font-size: 1.1rem; max-width: 42ch; }
.cta__contacts { margin-top: 30px; display: flex; flex-direction: column; gap: 14px; }
.cta__contacts a { color: var(--white); text-decoration: none; display: inline-flex; align-items: center; gap: 12px; font-weight: 600; }
.cta__contacts a:hover { color: var(--amber); }
.cta__contacts svg { width: 22px; height: 22px; color: var(--amber); flex: none; }
.cta__note { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em; color: var(--steel-2); margin-top: 28px; line-height: 1.7; }

.form {
  background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--radius);
  padding: clamp(24px, 4vw, 38px);
}
.form h3 { color: var(--white); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .85rem; color: var(--steel-2); margin-bottom: 7px; font-weight: 600; }
.field label .req { color: var(--amber); }
.field input, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--radius);
  border: 1px solid var(--ink-3); background: var(--ink); color: var(--white);
  font-family: var(--font-body); font-size: 1rem; transition: border-color .2s ease, box-shadow .2s ease;
}
.field input::placeholder, .field textarea::placeholder { color: #54667a; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-soft); }
.field textarea { resize: vertical; min-height: 84px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; } /* honeypot */

.consent { display: flex; gap: 11px; align-items: flex-start; margin: 6px 0 20px; }
.consent input { margin-top: 4px; width: 18px; height: 18px; flex: none; accent-color: var(--amber); }
.consent label { font-size: .82rem; color: var(--steel-2); line-height: 1.55; }
.consent a { color: var(--amber); }

.form__msg { display: none; font-size: .92rem; margin-top: 14px; padding: 12px 14px; border-radius: var(--radius); }
.form__msg.show { display: block; }
.form__msg.ok { background: rgba(63,157,107,.15); color: #9be3bd; border: 1px solid rgba(63,157,107,.4); }
.form__msg.err { background: rgba(226,90,59,.12); color: #f0a99a; border: 1px solid rgba(226,90,59,.4); }

.form__success { display: none; text-align: center; padding: 30px 10px; }
.form__success.show { display: block; }
.form__success .tick { width: 64px; height: 64px; margin: 0 auto 18px; color: var(--amber); }
.form__success h3 { color: var(--white); }
.form__success p { color: var(--steel-2); }

/* =========================================================================
   ФУТЕР
   ========================================================================= */
.footer { background: #0f161f; color: rgba(231,237,242,.7); padding-block: 50px 30px; font-size: .9rem; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
.footer h4 { color: var(--white); font-size: .78rem; font-family: var(--font-mono); letter-spacing: .16em; text-transform: uppercase; margin-bottom: 16px; }
.footer a { color: rgba(231,237,242,.7); text-decoration: none; }
.footer a:hover { color: var(--amber); }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer__req { line-height: 1.8; }
.footer__bottom { border-top: 1px solid var(--ink-3); margin-top: 36px; padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: .82rem; color: var(--steel); }

/* =========================================================================
   COOKIE BANNER
   ========================================================================= */
.cookie {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 80;
  background: var(--ink-2); color: var(--white); border: 1px solid var(--ink-3);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 20px; display: none; gap: 16px; align-items: center; flex-wrap: wrap;
  max-width: 760px; margin: 0 auto;
}
.cookie.show { display: flex; }
.cookie p { margin: 0; font-size: .88rem; color: rgba(231,237,242,.82); flex: 1; min-width: 240px; }
.cookie a { color: var(--amber); }
.cookie .btn { padding: 11px 20px; }

/* =========================================================================
   ОТДЕЛЬНЫЕ СТРАНИЦЫ (политика / согласие)
   ========================================================================= */
.doc { padding-top: clamp(120px, 16vw, 160px); padding-bottom: 80px; background: var(--paper); min-height: 70vh; }
.doc__inner { max-width: 820px; }
.doc h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.doc h2 { font-size: 1.25rem; margin-top: 2em; }
.doc p, .doc li { color: var(--text); font-size: 1rem; }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc a { color: var(--amber-d); }
.doc__back { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--steel); text-decoration: none; }
.doc__meta { font-family: var(--font-mono); font-size: .78rem; color: var(--steel); margin-bottom: 30px; }

/* =========================================================================
   АНИМАЦИЯ ПОЯВЛЕНИЯ
   ========================================================================= */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* =========================================================================
   АДАПТИВ
   ========================================================================= */
@media (max-width: 900px) {
  .nav { display: none; }
  .burger { display: block; }
  .header__phone { display: none; }
  .hero__grid { grid-template-columns: 1fr; gap: 36px; }
  .hero__art { order: -1; max-width: 460px; }
  .stats__row { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--ink-3); }
  .adv__grid, .proj__grid, .steps__grid, .rev__grid { grid-template-columns: 1fr; }
  .about__grid, .cta__grid, .footer__grid { grid-template-columns: 1fr; gap: 32px; }

  /* выезжающее мобильное меню */
  .nav.open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--ink); padding: 14px var(--gutter) 24px; border-top: 1px solid var(--ink-3);
  }
  .nav.open a { padding: 10px 0; width: 100%; border-bottom: 1px solid var(--ink-3); }
  .nav.open .header__phone { display: inline-block; color: var(--amber); }
}
@media (max-width: 560px) {
  .stats__row { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--ink-3); }
  .footer__bottom { flex-direction: column; }
}

/* =========================================================================
   КНОПКИ СВЯЗИ (вместо формы)
   ========================================================================= */
.contacts { display: flex; flex-direction: column; gap: 14px; }
.contact {
  display: flex; align-items: center; gap: 16px;
  background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--radius);
  padding: 18px 20px; text-decoration: none; color: var(--white);
  transition: border-color .2s ease, transform .15s ease, background .2s ease;
}
.contact:hover { border-color: var(--amber); transform: translateY(-2px); background: #1f2c3a; }
.contact__ic {
  width: 48px; height: 48px; border-radius: 12px; flex: none;
  display: grid; place-items: center; background: var(--amber-soft); color: var(--amber);
}
.contact__ic svg { width: 25px; height: 25px; }
.contact__t { font-weight: 700; font-size: 1.06rem; }
.contact__s { color: var(--steel-2); font-size: .86rem; }