/* BLACKFLOW — чёрный минимализм, цветные акценты */
@font-face {
  font-family: "Montserrat";
  font-weight: 900;
  font-display: swap;
  src: url("/fonts/montserrat-900-cyr.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "Montserrat";
  font-weight: 900;
  font-display: swap;
  src: url("/fonts/montserrat-900-lat.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+20AC, U+2122;
}
@font-face {
  font-family: "Jost";
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/jost-600-cyr.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "Jost";
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/jost-600-lat.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+20AC, U+2122;
}

:root {
  --bg: #08090b;
  --bg-2: #0e1013;
  --panel: #121418;
  --line: #22252b;
  --text: #e8e9ec;
  --muted: #8b8f98;
  --red: #ff2d55;
  --blue: #0a84ff;
  --green: #30d158;
  --yellow: #ffd60a;
  --violet: #bf5af2;
  --cyan: #64d2ff;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- шапка ---------- */
.header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 40px;
}
.header--page {
  position: sticky;
  background: rgba(8, 9, 11, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 16px 40px;
}

.logo {
  font-family: "Montserrat", var(--font);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.logo b { color: var(--text); }
.logo span { color: var(--muted); font-weight: 300; }
.logo .dot {
  display: inline-block;
  width: 8px; height: 8px;
  margin-left: 6px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--red), var(--blue));
  vertical-align: baseline;
}

.header-phone {
  font-size: 15px;
  color: var(--muted);
  transition: color .2s;
}
.header-phone:hover { color: var(--text); }

/* ---------- герой (index) ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}
#flow {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
/* фиксированный фон-поток для внутренних страниц */
#flow.flow-fixed {
  position: fixed;
  z-index: -1;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 0 40px;
  max-width: 880px;
}
.hero h1 {
  font-family: "Jost", var(--font);
  font-size: clamp(32px, 5.2vw, 60px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: .025em; /* воздух между буквами, чтобы контуры не слипались */
  color: #f2f3f5;
}
.hero h1 .brand { letter-spacing: .06em; }
/* контурные буквы: чёрная заливка + светлая обводка.
   Jost — геометрия в духе Futura: открытые формы, крупные просветы,
   контур не создаёт пересечений на стыках штрихов. */
@supports (-webkit-text-stroke: 1px white) {
  .hero h1 {
    -webkit-text-fill-color: #060709;
    -webkit-text-stroke: 1.3px rgba(255, 255, 255, .9);
  }
}
.hero-night {
  margin-top: 26px;
  font-size: clamp(16px, 2.4vw, 26px);
  letter-spacing: .4em;
  text-transform: uppercase;
  color: #767c88;
  text-indent: .4em; /* компенсация letter-spacing при центрировании */
}

.hero-cta {
  margin-top: 44px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 1px solid var(--line);
  transition: transform .15s, border-color .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
/* чёрная кнопка с медленно переливающейся приглушённой цветной рамкой */
.btn-primary {
  color: var(--text);
  border: 1px solid transparent;
  background:
    linear-gradient(#0c0d10, #0c0d10) padding-box,
    linear-gradient(90deg,
      rgba(255, 45, 85, .55), rgba(255, 214, 10, .5), rgba(48, 209, 88, .5),
      rgba(10, 132, 255, .55), rgba(191, 90, 242, .5), rgba(255, 45, 85, .55)
    ) 0 0 / 300% 100% border-box;
  animation: btn-flow 9s linear infinite;
}
@keyframes btn-flow {
  to { background-position: 0 0, 300% 0; }
}
.btn-primary:hover {
  background:
    linear-gradient(#14161a, #14161a) padding-box,
    linear-gradient(90deg,
      rgba(255, 45, 85, .8), rgba(255, 214, 10, .75), rgba(48, 209, 88, .75),
      rgba(10, 132, 255, .8), rgba(191, 90, 242, .75), rgba(255, 45, 85, .8)
    ) 0 0 / 300% 100% border-box;
}
@media (prefers-reduced-motion: reduce) {
  .btn-primary { animation: none; }
}
.btn-outline { color: var(--text); }
.btn-outline:hover { border-color: var(--blue); }

.hero-tagline {
  position: relative;
  z-index: 2;
  padding: 0 40px 36px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
}
.tagline-main {
  font-size: 15px;
  color: var(--muted);
}
.tagline-main b { color: var(--text); font-weight: 600; }
/* центрирование геро-текстов на ПК */
@media (min-width: 761px) {
  .hero-inner { margin: 0 auto; text-align: center; }
  .hero-cta { justify-content: center; }
  .hero-tagline { justify-content: center; text-align: center; }
  .hero-services { margin: 0 auto; text-align: center; }
}
.hero-services {
  position: relative;
  z-index: 2;
  padding: 0 40px 28px;
  font-size: 13.5px;
  color: #5d626c;
  max-width: 720px;
}
.hero-services a { color: #7d828d; border-bottom: 1px dotted #3a3e46; }
.hero-services a:hover { color: var(--text); }

/* ---------- страница услуг ---------- */
.page-main { padding-bottom: 40px; }
section { padding: 64px 0 8px; }
.section-title {
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  letter-spacing: -.01em;
  margin-bottom: 10px;
}
.section-lead { color: var(--muted); max-width: 680px; margin-bottom: 34px; }

.page-hero { padding: 72px 0 8px; }
.page-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.15;
  max-width: 860px;
}
.page-hero .sub { margin-top: 16px; color: var(--muted); font-size: 18px; max-width: 640px; }

.badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.badge {
  font-size: 13.5px;
  padding: 8px 16px;
  border-radius: 100px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.badge b { color: var(--text); font-weight: 600; }
.badge--red { border-color: color-mix(in srgb, var(--red) 45%, transparent); }
.badge--blue { border-color: color-mix(in srgb, var(--blue) 45%, transparent); }
.badge--green { border-color: color-mix(in srgb, var(--green) 45%, transparent); }
.badge--yellow { border-color: color-mix(in srgb, var(--yellow) 45%, transparent); }

/* карточки «что красим» */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  border-top: 2px solid var(--accent, var(--line));
}
.card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--muted); }
.card--red { --accent: var(--red); }
.card--blue { --accent: var(--blue); }
.card--green { --accent: var(--green); }
.card--yellow { --accent: var(--yellow); }
.card--violet { --accent: var(--violet); }
.card--cyan { --accent: var(--cyan); }

/* информационное сообщение о гарантии */
.notice {
  margin-top: 8px;
  border: 1px solid color-mix(in srgb, var(--green) 50%, transparent);
  background: color-mix(in srgb, var(--green) 6%, var(--bg-2));
  border-radius: 12px;
  padding: 26px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.notice .icon {
  flex: 0 0 auto;
  width: 34px; height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--green) 18%, transparent);
  color: var(--green);
  font-size: 18px;
  font-weight: 700;
}
.notice h3 { font-size: 17px; margin-bottom: 6px; }
.notice p { font-size: 14.5px; color: var(--muted); }
.notice p b { color: var(--text); }

/* бренды */
.brands {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.brand-chip {
  padding: 10px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--muted);
  transition: color .2s, border-color .2s;
}
.brand-chip:hover { color: var(--text); }
.brand-chip--main {
  color: var(--text);
  border-color: color-mix(in srgb, var(--blue) 55%, transparent);
}
.brands-note { margin-top: 14px; font-size: 14px; color: var(--muted); }

/* этапы */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }
.step {
  counter-increment: step;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
}
.step::before {
  content: "0" counter(step);
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--blue);
  margin-bottom: 10px;
}
.step:nth-child(2)::before { color: var(--green); }
.step:nth-child(3)::before { color: var(--yellow); }
.step:nth-child(4)::before { color: var(--violet); }
.step:nth-child(5)::before { color: var(--red); }
.step h3 { font-size: 15.5px; margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--muted); }

/* цены */
.price-box {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-2);
  padding: 30px;
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}
.price-num { font-size: clamp(34px, 5vw, 52px); font-weight: 800; white-space: nowrap; }
.price-num small { font-size: .45em; font-weight: 500; color: var(--muted); }
.price-box p { color: var(--muted); font-size: 14.5px; max-width: 480px; }

/* FAQ */
.faq details {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
  margin-bottom: 10px;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  position: relative;
  padding-right: 44px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 20px; top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 20px;
  font-weight: 300;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 22px 18px; color: var(--muted); font-size: 14.5px; }

/* форма */
.lead-section {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-2);
  padding: 40px;
  margin-top: 24px;
}
.lead-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.form-row { display: grid; gap: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  padding: 12px 14px;
  font: inherit;
  font-size: 15px;
  transition: border-color .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); }
.field textarea { min-height: 96px; resize: vertical; }
.form-note { font-size: 12.5px; color: #5d626c; margin-top: 12px; }
.form-status { margin-top: 12px; font-size: 14px; min-height: 20px; }
.form-status.ok { color: var(--green); }
.form-status.err { color: var(--red); }

/* контакты */
.contact-list { display: grid; gap: 14px; font-size: 15.5px; }
.contact-list a { border-bottom: 1px dotted #3a3e46; }
.contact-list a:hover { color: var(--blue); }
.contact-label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 2px; }

.requisites { margin-top: 22px; }
.requisites summary {
  cursor: pointer;
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--muted);
  list-style: none;
  transition: color .2s, border-color .2s;
}
.requisites summary::-webkit-details-marker { display: none; }
.requisites summary:hover { color: var(--text); border-color: var(--yellow); }
.requisites-body {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
  border-left: 2px solid var(--yellow);
  padding-left: 16px;
  display: grid;
  gap: 4px;
}
.requisites-body b { color: var(--text); font-weight: 600; }

/* футер */
.footer {
  border-top: 1px solid var(--line);
  margin-top: 72px;
  padding: 28px 0;
  font-size: 13.5px;
  color: #5d626c;
}
.footer .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer a:hover { color: var(--text); }

@media (max-width: 760px) {
  .header, .header--page { padding: 18px 22px; }
  .hero-inner, .hero-tagline, .hero-services { padding-left: 22px; padding-right: 22px; }
  .lead-grid { grid-template-columns: 1fr; gap: 28px; }
  .lead-section { padding: 26px 20px; }
  section { padding: 46px 0 6px; }
}