/* ОсОО «Основатель» — сайт компании. Бренд 2026: Montserrat + JetBrains Mono */

:root {
  --ink: #070A0F;
  --ink-2: #0B1119;
  --paper: #F3F3F0;
  --muted: #8B95A1;
  --flame: #F28C28;
  --deep: #0D4B66;
  --deeper: #082F42;
  --sky: #4BA3CC;
  --line: rgba(243, 243, 240, 0.12);
  --line-soft: rgba(243, 243, 240, 0.06);

  --w: 1120px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --section: clamp(4rem, 8vw, 8rem);

  --t-eyebrow: 0.72rem;
  --t-body: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --t-lead: clamp(1.0625rem, 1rem + 0.45vw, 1.3125rem);
  --t-h2: clamp(1.5rem, 1.2rem + 1.4vw, 2.25rem);
  --t-h1: clamp(2.1rem, 1.3rem + 3.6vw, 4.25rem);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: Montserrat, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: var(--t-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--paper); text-decoration-color: rgba(242, 140, 40, 0.5); text-underline-offset: 3px; }
a:hover { color: var(--flame); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--flame);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap { width: 100%; max-width: var(--w); margin-inline: auto; padding-inline: var(--gutter); }

.mono {
  font-family: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-variant-ligatures: none;
}

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: var(--t-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.25rem;
}
.eyebrow b { color: var(--flame); font-weight: 500; }

/* ---------- Шапка ---------- */

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 10, 15, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.top__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}
.brand { display: flex; align-items: baseline; gap: 0.6rem; text-decoration: none; }
.brand__mark { font-weight: 800; letter-spacing: -0.02em; font-size: 1.0625rem; }
.brand__legal {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.top__nav { display: flex; align-items: center; gap: clamp(0.75rem, 2vw, 1.75rem); }
.top__nav a {
  font-size: 0.8125rem;
  text-decoration: none;
  color: var(--muted);
  transition: color 160ms var(--ease);
}
.top__nav a:hover { color: var(--paper); }
.top__nav a.lang {
  color: var(--paper);
  border: 1px solid var(--line);
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}
.top__nav a.lang:hover { border-color: var(--flame); color: var(--flame); }
@media (max-width: 640px) { .top__nav .hide-sm { display: none; } }

/* ---------- Первый экран ---------- */

.hero > .wrap { padding-block: clamp(2rem, 5vw, 4rem) clamp(2.5rem, 6vw, 5rem); }
.hero__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 900px) { .hero__grid { grid-template-columns: 1.15fr 0.85fr; } }

/* дети грида не должны распирать колонку своим минимальным содержимым */
.hero__grid > *, .cards > *, .steps > *, .contact > * { min-width: 0; }

h1 {
  font-size: var(--t-h1);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin: 0 0 1.5rem;
  text-wrap: balance;
}
h1 em { font-style: normal; color: var(--flame); }

.lead { font-size: var(--t-lead); color: #D5D8DC; margin: 0 0 2rem; max-width: 36ch; }

.facts { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.fact {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--muted);
}

/* Ночная переписка — подпись первого экрана */

.thread {
  margin: 0;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  padding: 1.25rem;
  display: grid;
  gap: 0.75rem;
}
.thread__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.35rem 1rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 0.75rem;
  border-bottom: 1px dashed var(--line);
}
.msg { max-width: 88%; padding: 0.7rem 0.9rem; font-size: 0.9375rem; line-height: 1.5; }
.msg time {
  display: block;
  margin-top: 0.4rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.msg--in { background: #141A22; border-left: 2px solid var(--muted); }
.msg--out { background: var(--deeper); border-left: 2px solid var(--flame); margin-left: auto; }
.thread__foot {
  font-size: 0.8125rem;
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: 0.75rem;
}
.thread__foot b { color: var(--paper); font-weight: 600; }

/* ---------- Секции ---------- */

section { border-top: 1px solid var(--line-soft); }
section > .wrap { padding-block: var(--section); }

h2 {
  font-size: var(--t-h2);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 0 0 1rem;
  max-width: 22ch;
  text-wrap: balance;
}
.section__lead { color: var(--muted); max-width: 62ch; margin: 0 0 clamp(2rem, 4vw, 3rem); }

.cards { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 820px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--ink); padding: clamp(1.5rem, 3vw, 2.25rem); }
.card h3 { font-size: 1.0625rem; font-weight: 700; margin: 0 0 0.75rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 0.9375rem; }
.card__tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--flame);
  display: block;
  margin-bottom: 1.25rem;
}

/* Шаги подключения — реальная последовательность, поэтому нумерация */

.steps { display: grid; gap: 1.5rem; counter-reset: step; }
@media (min-width: 820px) { .steps { grid-template-columns: repeat(3, 1fr); gap: 2.5rem; } }
.step { padding-top: 1.25rem; border-top: 2px solid var(--deep); }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--flame);
  display: block;
  margin-bottom: 0.75rem;
}
.step h3 { font-size: 1rem; font-weight: 700; margin: 0 0 0.5rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.9375rem; }

/* ---------- Реквизиты ---------- */

.registry {
  border: 1px solid var(--line);
  background: var(--ink-2);
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 3vw, 2.5rem);
}
.registry::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, transparent 50%, var(--flame) 50%);
  opacity: 0.85;
}
.registry dl { margin: 0; display: grid; gap: 0; }
@media (min-width: 720px) { .registry dl { grid-template-columns: 16rem 1fr; } }
.registry dt, .registry dd {
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8125rem;
  line-height: 1.5;
}
.registry dt { color: var(--muted); letter-spacing: 0.04em; }
.registry dd { color: var(--paper); word-break: break-word; }
@media (max-width: 719px) {
  .registry dt { padding-bottom: 0.2rem; border-bottom: 0; }
  .registry dd { padding-top: 0.2rem; }
}

/* ---------- Контакты и подвал ---------- */

.contact { display: grid; gap: 1.5rem; }
@media (min-width: 720px) { .contact { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem; } }
.contact__item span {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.contact__item a, .contact__item p { font-size: 1.0625rem; margin: 0; }

.foot { border-top: 1px solid var(--line-soft); }
.foot__in {
  padding-block: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--muted);
}
.foot__links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.foot__links a { text-decoration: none; color: var(--muted); }
.foot__links a:hover { color: var(--flame); }

/* ---------- Документы (политика, условия, удаление данных) ---------- */

.doc { max-width: 76ch; padding-block: clamp(3rem, 6vw, 5rem); }
.doc h1 { font-size: clamp(1.75rem, 1.2rem + 2vw, 2.75rem); margin-bottom: 0.75rem; }
.doc__meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}
.doc h2 { font-size: 1.1875rem; margin: 2.5rem 0 0.75rem; max-width: none; letter-spacing: -0.01em; }
.doc h3 { font-size: 1rem; margin: 1.75rem 0 0.5rem; font-weight: 700; }
.doc p, .doc li { color: #C9CDD3; }
.doc ul { padding-left: 1.1rem; }
.doc li { margin-bottom: 0.5rem; }
.doc li::marker { color: var(--flame); }
.doc table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 0.875rem; }
.doc th, .doc td { text-align: left; padding: 0.7rem 0.75rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.doc th { color: var(--muted); font-weight: 600; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; }
.doc__back {
  display: inline-block;
  margin-bottom: 2rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--muted);
}
.doc__back:hover { color: var(--flame); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}