/* ============================================================
   SITE.CSS — компоненты и секции
   Editorial-асимметрия, не ИИ-шаблон. Тёплая палитра, янтарь-акцент.
   ============================================================ */

/* ---------- КНОПКИ ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  font-family: var(--font-body); font-weight: 600; font-size: var(--step-0);
  padding: 0.85em 1.5em; border-radius: var(--radius);
  background: var(--ink); color: var(--paper-pure);
  transition: transform var(--dur) var(--ease), background 0.25s, box-shadow 0.25s;
  will-change: transform; line-height: 1;
}
.btn:hover { background: var(--accent); transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper-pure); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn--lg { padding: 1.05em 1.9em; font-size: var(--step-1); }
.btn--sm { padding: 0.6em 1.1em; font-size: var(--step--1); }
.btn--full { width: 100%; }

/* ---------- ШАПКА ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(12px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav__logo { display: flex; align-items: center; gap: 0.7em; font-weight: 600; }
.nav__logo-mark {
  font-family: var(--font-display); font-style: italic; font-size: 1.35em;
  width: 1.9em; height: 1.9em; display: grid; place-items: center;
  background: var(--ink); color: var(--paper-pure); border-radius: var(--radius);
}
.nav__logo-text { font-size: var(--step-0); }
.nav__links { display: flex; gap: clamp(1rem, 2.5vw, 2.2rem); }
.nav__links a { font-size: var(--step--1); color: var(--muted); position: relative; padding: 0.3em 0; transition: color 0.2s; }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1.5px; background: var(--accent); transition: width 0.3s var(--ease); }
.nav__links a:hover { color: var(--ink); } .nav__links a:hover::after { width: 100%; }
.nav__right { display: flex; align-items: center; gap: 1rem; }
.lang { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.05em; color: var(--muted); display: flex; gap: 0.3em; transition: color 0.2s; }
.lang:hover { color: var(--ink); }
.lang [data-lang-cur] { color: var(--ink); font-weight: 600; } .lang__sep { opacity: 0.4; }
.lang--mob { display: none; }

/* бургер */
.burger { display: none; width: 28px; height: 28px; flex-direction: column; justify-content: center; gap: 6px; }
.burger span { display: block; height: 2px; width: 100%; background: var(--ink); transition: transform 0.3s var(--ease), opacity 0.3s; }
.burger[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(2rem, 5vw, 5rem);
  align-items: center; min-height: calc(100vh - 68px);
  padding-block: clamp(2rem, 4vw, 4rem) var(--section-y);
  max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.2rem, 5vw, 3.5rem);
}
.hero__inner { display: flex; flex-direction: column; align-items: flex-start; gap: clamp(1.4rem, 2.5vw, 2.2rem); }
.hero__title { font-size: clamp(2.4rem, 1.4rem + 4vw, 4.6rem); letter-spacing: -0.02em; line-height: 1.02; }
.hero__title span { display: block; }
.hero__title .serif-em { color: var(--accent); }
.hero__sub { font-size: var(--step-1); color: var(--muted); max-width: 36ch; line-height: 1.5; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.hero__proof { display: flex; flex-wrap: wrap; gap: clamp(1.5rem, 4vw, 3.5rem); margin-top: 1rem; padding-top: 1.6rem; border-top: 1px solid var(--line); width: 100%; }
.stat__num { font-family: var(--font-display); font-size: var(--step-4); line-height: 1; display: flex; align-items: baseline; gap: 0.15em; color: var(--ink); }
.stat__from { color: var(--muted-soft); text-decoration: line-through; text-decoration-thickness: 2px; font-size: 0.62em; }
.stat__arrow { color: var(--accent); font-size: 0.5em; align-self: center; }
.stat__to { color: var(--accent); }
.stat__unit { font-family: var(--font-mono); font-size: 0.26em; color: var(--muted); letter-spacing: 0.05em; align-self: flex-end; padding-bottom: 0.6em; }
.stat__label { font-size: var(--step--1); color: var(--muted); max-width: 26ch; margin-top: 0.6em; }

/* фото-заглушка — портретная пропорция, «человеческая» */
.hero__photo { justify-self: end; align-self: center; display: flex; width: 100%; }
.photo-stub {
  width: 100%; aspect-ratio: 4/5; max-height: 560px;
  background: linear-gradient(150deg, var(--dark-bg-2), var(--ink));
  border-radius: var(--radius-lg); display: grid; place-items: center;
  color: var(--dark-muted); position: relative; overflow: hidden;
  box-shadow: 0 30px 60px -25px rgba(22,19,15,0.5);
}
.photo-stub::before { content: ""; position: absolute; inset: 14px; border: 1px solid rgba(244,240,232,0.12); border-radius: var(--radius); }
.photo-stub .mono { letter-spacing: 0.3em; text-transform: uppercase; }

/* ---------- КОМУ ПОЛЕЗЕН ---------- */
.who { padding-block: var(--section-y); }
.who__head { max-width: 18ch; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.who__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 3rem); }
.who__item { border-top: 2px solid var(--ink); padding-top: 1.1rem; }
.who__item p { color: var(--ink-soft); font-size: var(--step-0); }
.who__n { display: block; color: var(--accent); margin-bottom: 0.8rem; font-size: var(--step-0); }

/* ---------- КЕЙС (тёмная секция, контраст) ---------- */
.case { background: var(--dark-bg); color: var(--dark-paper); padding-block: var(--section-y); position: relative; }
.case h2 { color: var(--dark-paper); }
.case__lead { max-width: 22ch; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.case__lead h2 { font-size: var(--step-3); }
.case__body { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.case__text p { color: var(--dark-muted); margin-bottom: 1.2rem; max-width: 46ch; }
.case__bridge { color: var(--dark-paper) !important; font-family: var(--font-display); font-style: italic; font-size: var(--step-1); line-height: 1.4; border-left: 2px solid var(--accent); padding-left: 1.2rem; }
.case__bots-title { color: var(--accent); margin-bottom: 1.2rem; }
.bots { list-style: none; display: flex; flex-direction: column; gap: 0.2rem; }
.bots li { display: flex; align-items: baseline; gap: 1rem; padding: 0.85rem 0; border-bottom: 1px solid rgba(244,240,232,0.1); font-size: var(--step--1); color: var(--dark-paper); }
.bots__tag { color: var(--accent); flex-shrink: 0; width: 3.5em; text-transform: uppercase; letter-spacing: 0.08em; }
.bots__tag--life { color: var(--muted-soft); }

/* ---------- ПОПРОБОВАТЬ ---------- */
.try { padding-block: var(--section-y); }
.try__inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.try__text h2 { font-size: var(--step-3); margin: 0.6rem 0 1.2rem; max-width: 16ch; }
.try__text p { color: var(--muted); margin-bottom: 1.6rem; }
.try__note { color: var(--muted-soft); margin-top: 1rem; }
.video-stub { aspect-ratio: 16/10; background: linear-gradient(150deg, var(--dark-bg-2), var(--ink)); border-radius: var(--radius-lg); display: grid; place-items: center; gap: 1rem; color: var(--dark-muted); cursor: pointer; transition: transform 0.4s var(--ease); box-shadow: 0 30px 60px -30px rgba(22,19,15,0.4); }
.video-stub:hover { transform: scale(1.01); }
.video-stub__play { width: 4rem; height: 4rem; border-radius: 50%; background: var(--accent); color: var(--paper-pure); display: grid; place-items: center; font-size: 1.3rem; padding-left: 4px; }
.video-stub .mono { letter-spacing: 0.25em; text-transform: uppercase; }

/* ---------- УСЛУГА ---------- */
.services { padding-block: var(--section-y); background: var(--paper-pure); }
.services__head { max-width: 40ch; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.services__head h2 { font-size: var(--step-3); margin: 0.6rem 0 1rem; }
.services__intro { color: var(--muted); font-size: var(--step-1); line-height: 1.5; }
.services__steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.svc { background: var(--paper-pure); padding: clamp(1.5rem, 3vw, 2.6rem); transition: background 0.3s; }
.svc:hover { background: var(--paper); }
.svc__n { display: block; color: var(--accent); font-size: var(--step-1); margin-bottom: 1rem; }
.svc h3 { margin-bottom: 0.7rem; }
.svc p { color: var(--ink-soft); font-size: var(--step--1); }

/* ---------- КАК РАБОТАЮ ---------- */
.process { padding-block: var(--section-y); }
.process__inner h2 { font-size: var(--step-3); margin-bottom: clamp(2rem, 4vw, 3rem); }
.proc { list-style: none; display: grid; gap: 0; max-width: 760px; }
.proc li { display: flex; gap: 1.4rem; padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
.proc li:first-child { border-top: 1px solid var(--line); }
.proc__n { color: var(--accent); font-size: var(--step-2); line-height: 1; flex-shrink: 0; }
.proc b { font-family: var(--font-display); font-size: var(--step-1); font-weight: 600; display: block; margin-bottom: 0.3rem; }
.proc p { color: var(--muted); font-size: var(--step-0); }

/* ---------- ЧЕСТНОСТЬ ---------- */
.honest { padding-block: var(--section-y); }
.honest__inner { max-width: 56ch; margin-inline: auto; text-align: left; }
.honest__inner h2 { font-size: var(--step-3); margin: 0.6rem 0 1.4rem; }
.honest__inner > p { font-size: var(--step-1); line-height: 1.6; color: var(--ink-soft); max-width: none; }

/* ---------- FAQ ---------- */
.faq { padding-block: var(--section-y); background: var(--paper-pure); }
.faq h2 { font-size: var(--step-3); margin-bottom: clamp(1.6rem, 3vw, 2.5rem); }
.faq__list { max-width: 820px; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary { font-family: var(--font-display); font-size: var(--step-1); font-weight: 600; padding: 1.3rem 2.5rem 1.3rem 0; cursor: pointer; list-style: none; position: relative; transition: color 0.2s; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); color: var(--accent); font-size: 1.4em; font-family: var(--font-body); transition: transform 0.3s var(--ease); }
.faq__item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq__item summary:hover { color: var(--accent); }
.faq__item p { color: var(--muted); padding-bottom: 1.4rem; max-width: 64ch; font-size: var(--step-0); }

/* ---------- КОНТАКТ ---------- */
.contact { padding-block: var(--section-y); background: var(--dark-bg); color: var(--dark-paper); }
.contact__inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 5vw, 5rem); align-items: start; }
.contact h2 { color: var(--dark-paper); font-size: var(--step-3); max-width: 16ch; }
.contact__lead p { color: var(--dark-muted); margin: 1.3rem 0 2rem; max-width: 40ch; }
.contact__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.contact .btn { background: var(--accent); color: var(--paper-pure); }
.contact .btn:hover { background: var(--paper-pure); color: var(--ink); }
.contact .btn--ghost { background: transparent; color: var(--dark-paper); box-shadow: inset 0 0 0 1.5px rgba(244,240,232,0.4); }
.contact .btn--ghost:hover { background: var(--dark-paper); color: var(--ink); box-shadow: none; }

/* форма */
.contact__form { background: var(--dark-bg-2); padding: clamp(1.5rem, 3vw, 2.4rem); border-radius: var(--radius-lg); display: grid; gap: 1.2rem; }
.field { display: grid; gap: 0.4rem; }
.field label { font-family: var(--font-mono); font-size: var(--step--1); color: var(--dark-muted); letter-spacing: 0.03em; }
.field input, .field textarea { background: var(--ink); border: 1px solid rgba(244,240,232,0.14); border-radius: var(--radius); padding: 0.8em 0.9em; color: var(--dark-paper); font: inherit; font-size: var(--step-0); transition: border-color 0.2s; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field__err { font-size: var(--step--1); color: #e0794f; display: none; }
.field.invalid input, .field.invalid textarea { border-color: #e0794f; }
.field.invalid .field__err { display: block; }
.form__ok { color: var(--accent); font-family: var(--font-mono); font-size: var(--step--1); text-align: center; }

/* ---------- ФУТЕР ---------- */
.footer { padding-block: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid var(--line); }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; }
.footer__brand { display: flex; flex-direction: column; gap: 0.3rem; }
.footer__name { font-family: var(--font-display); font-size: var(--step-1); }
.footer__tag { color: var(--muted); }
.footer__links { display: flex; gap: 2rem; }
.footer__links a { color: var(--muted); font-size: var(--step--1); transition: color 0.2s; }
.footer__links a:hover { color: var(--accent); }
.footer__legal { color: var(--muted-soft); }

/* ---------- мобильный sticky CTA ---------- */
.sticky-cta { display: none; }

/* ---------- REVEAL анимация ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ============================================================ АДАПТИВ */
@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; }
  .hero__photo { order: -1; width: 100%; }
  .photo-stub { min-height: 280px; }
  .case__body, .try__inner, .contact__inner { grid-template-columns: 1fr; }
  .who__grid, .services__steps { grid-template-columns: 1fr; }
  .services__steps { border-left: none; border-right: none; }
}

@media (max-width: 680px) {
  .nav__links, .nav__right .btn, .nav__right .lang { display: none; }
  .burger { display: flex; }
  /* мобильное меню (раскрывается) */
  .nav__links.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 68px; left: 0; right: 0;
    background: var(--paper-pure); border-bottom: 1px solid var(--line);
    padding: 0.5rem clamp(1.2rem, 5vw, 3.5rem) 1.5rem;
  }
  .nav__links.open a { padding: 1rem 0; border-bottom: 1px solid var(--line); font-size: var(--step-1); color: var(--ink); }
  .nav__links.open .lang--mob { display: inline-flex; padding-top: 1.2rem; font-size: var(--step-0); }
  .sticky-cta {
    display: flex; align-items: center; justify-content: center;
    position: fixed; left: 1rem; right: 1rem; bottom: 1rem; z-index: 90;
    background: var(--ink); color: var(--paper-pure); font-weight: 600;
    padding: 1em; border-radius: var(--radius); font-size: var(--step-0);
    box-shadow: 0 12px 30px -10px rgba(22,19,15,0.5);
  }
  .hero__title { font-size: clamp(2.3rem, 10vw, 3.4rem); line-height: 1.06; }
  .hero__cta .btn { flex: 1; }
}