/* ============================================================
   Фильтротекс — landing styles
   Palette: deep slate navy + warm copper accent (textile feel)
   ============================================================ */

:root {
  --navy-900: #0f1b33;
  --navy-800: #14233f;
  --navy-700: #1d3157;
  --ink: #1a2336;
  --muted: #5c6b85;
  --line: #e3e8f0;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --accent: #c9711f;       /* copper */
  --accent-dark: #a85c16;
  --accent-soft: #fbeede;
  --teal: #16887e;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px -12px rgba(15, 27, 51, 0.18);
  --shadow-lg: 0 24px 60px -20px rgba(15, 27, 51, 0.28);
  --maxw: 1140px;
  --font: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ───────────── Buttons ───────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--accent { background: var(--accent); color: #fff; }
.btn--accent:hover { background: var(--accent-dark); }
.btn--ghost { background: transparent; color: var(--navy-800); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--navy-700); background: var(--bg-alt); }
.btn--block { width: 100%; }

/* ───────────── Header ───────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark { color: var(--navy-700); display: flex; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text strong { font-size: 18px; letter-spacing: .2px; }
.brand__text small { font-size: 11px; color: var(--muted); }

.nav {
  display: flex;
  gap: 26px;
  margin-left: auto;
  font-weight: 600;
  font-size: 15px;
}
.nav a { color: var(--navy-800); position: relative; padding: 4px 0; }
.nav a::after {
  content: "";
  position: absolute; left: 0; bottom: -2px;
  width: 0; height: 2px; background: var(--accent);
  transition: width .2s ease;
}
.nav a:hover::after { width: 100%; }

.header__cta { padding: 10px 20px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--navy-800); border-radius: 2px; transition: .25s; }

/* ───────────── Hero ───────────── */
.hero {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(201,113,31,.10), transparent 60%),
    linear-gradient(180deg, #fbfcfe 0%, #f3f6fb 100%);
  border-bottom: 1px solid var(--line);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
  padding: 84px 24px 76px;
}
.hero__eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 14px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}
.hero__title {
  margin: 0 0 18px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: -.5px;
  color: var(--navy-900);
}
.hero__lead { margin: 0 0 28px; font-size: 18px; color: var(--muted); max-width: 540px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero__stats {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 32px;
}
.hero__stats li { display: flex; flex-direction: column; }
.hero__stats strong { font-size: 26px; color: var(--navy-900); }
.hero__stats span { font-size: 13px; color: var(--muted); max-width: 130px; }

/* Hero visual — real photo card */
.hero__visual { display: flex; justify-content: center; }
.photo-card {
  position: relative;
  margin: 0;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 4 / 5;
  border-radius: 20px;
  background: var(--navy-800);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.photo-card img { width: 100%; height: 100%; object-fit: cover; }
.photo-card figcaption {
  position: absolute;
  left: 16px; bottom: 16px; right: 16px;
  background: rgba(255,255,255,.94);
  color: var(--navy-900);
  font-weight: 700;
  font-size: 14px;
  padding: 11px 15px;
  border-radius: 12px;
  backdrop-filter: blur(4px);
}

/* ───────────── Trust strip ───────────── */
.strip { background: var(--navy-900); color: #cdd7e8; }
.strip__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 40px;
  padding: 16px 24px;
  font-size: 14px;
  justify-content: center;
  text-align: center;
}
.strip b { color: #fff; }

/* ───────────── Sections ───────────── */
.section { padding: 84px 0; }
.section--alt { background: var(--bg-alt); }
.kicker {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 12.5px;
  font-weight: 800;
  color: var(--accent);
}
.section__title {
  margin: 0 0 16px;
  font-size: clamp(26px, 3.5vw, 38px);
  line-height: 1.15;
  letter-spacing: -.4px;
  color: var(--navy-900);
}
.section__lead { margin: 0 0 36px; font-size: 18px; color: var(--muted); max-width: 640px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.grid-2--wide { grid-template-columns: 1.2fr .8fr; }
.grid-2--form { grid-template-columns: 1fr 1.05fr; align-items: center; }
.grid-2--contacts { grid-template-columns: 1fr 1fr; align-items: stretch; }
.grid-2 p { color: var(--muted); font-size: 16.5px; }
.grid-2 strong { color: var(--ink); }

.link-arrow { color: var(--accent); font-weight: 700; }
.link-arrow:hover { color: var(--accent-dark); }

/* Timeline */
.timeline {
  list-style: none; margin: 0; padding: 0;
  border-left: 2px solid var(--line);
}
.timeline li {
  position: relative;
  padding: 0 0 24px 26px;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -7px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg-alt);
}
.timeline b { display: block; color: var(--navy-900); font-size: 17px; }
.timeline span { color: var(--muted); font-size: 15px; }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.cards--compact { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #d2dcec; }
.card__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  font-size: 24px;
  background: var(--accent-soft);
  border-radius: 12px;
  margin-bottom: 16px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; color: var(--navy-900); }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* Photo cards (products) */
.card--photo { padding: 0; overflow: hidden; }
.card__img { aspect-ratio: 16 / 11; overflow: hidden; background: var(--bg-alt); }
.card__img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s ease;
}
.card--photo:hover .card__img img { transform: scale(1.05); }
.card__body { padding: 22px 24px 26px; }
.card__body h3 { margin: 0 0 8px; font-size: 18px; color: var(--navy-900); }
.card__body p { margin: 0; color: var(--muted); font-size: 15px; }

.products__cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 36px; }

/* Industries */
.industries {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.industries li {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-weight: 600;
  font-size: 15px;
  color: var(--navy-900);
  box-shadow: var(--shadow);
  transition: transform .15s ease, border-color .15s ease;
}
.industries li:hover { transform: translateY(-3px); border-color: #d2dcec; }
.industries__ico {
  width: 38px; height: 38px; flex: none;
  display: grid; place-items: center;
  font-size: 19px;
  background: var(--accent-soft);
  border-radius: 10px;
}

/* Spec grid */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}
.spec {
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  border: 1px solid var(--line);
}
.spec h4 { margin: 0 0 6px; color: var(--accent-dark); font-size: 15px; }
.spec p { margin: 0; font-size: 14.5px; color: var(--muted); }

/* Equipment aside */
.equip {
  background: var(--navy-800);
  color: #dbe4f2;
  border-radius: var(--radius);
  padding: 32px 30px;
  box-shadow: var(--shadow-lg);
}
.equip__title { margin: 0 0 8px; color: #fff; font-size: 22px; }
.equip__lead { margin: 0 0 22px; color: #aab8d2; font-size: 15px; }
.equip__list { list-style: none; margin: 0 0 22px; padding: 0; }
.equip__list li {
  padding: 14px 0;
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex; flex-direction: column;
}
.equip__list li:first-child { border-top: none; }
.equip__list b { color: var(--accent); font-size: 17px; }
.equip__list span { color: #aab8d2; font-size: 14px; }
.equip__note { margin: 0; font-size: 14px; color: #aab8d2; }

/* Form */
.form {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label {
  display: flex; flex-direction: column;
  gap: 7px;
  font-size: 14px; font-weight: 600;
  color: var(--navy-800);
  margin-bottom: 16px;
}
.form input, .form textarea {
  font-family: var(--font);
  font-size: 15px;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fcfdff;
  color: var(--ink);
  transition: border-color .15s ease, box-shadow .15s ease;
  resize: vertical;
}
.form input:focus, .form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form__hint { margin: 12px 0 0; font-size: 13px; color: var(--muted); text-align: center; }
.form__hint.is-success { color: var(--teal); font-weight: 700; }
.form__hint.is-error { color: #c0392b; font-weight: 700; }

/* Contacts */
.contacts { list-style: none; margin: 0; padding: 0; }
.contacts li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.contacts li:first-child { border-top: none; }
.contacts b { color: var(--navy-900); font-size: 14px; }
.contacts span { color: var(--muted); font-size: 15px; }
.contacts a { color: var(--accent-dark); font-weight: 600; }

.contact-list { list-style: none; margin: 22px 0 0; padding: 0; }
.contact-list li {
  display: flex; justify-content: space-between;
  padding: 12px 0; border-top: 1px solid var(--line);
  font-size: 15px;
}
.contact-list span { color: var(--muted); }
.contact-list a { color: var(--navy-900); font-weight: 700; }

.map {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 360px;
  box-shadow: var(--shadow);
}
.map iframe { height: 100%; min-height: 360px; }

/* Footer */
.footer { background: var(--navy-900); color: #aab8d2; padding: 56px 0 40px; }
.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.footer__brand strong { color: #fff; font-size: 20px; display: block; margin-bottom: 8px; }
.footer__brand p { margin: 0; font-size: 14px; max-width: 320px; }
.footer__nav { display: flex; flex-direction: column; gap: 10px; font-size: 15px; }
.footer__nav a:hover { color: #fff; }
.footer__meta { font-size: 14px; }
.footer__meta p { margin: 0 0 6px; }

/* ───────────── Responsive ───────────── */
@media (max-width: 920px) {
  .hero__inner { grid-template-columns: 1fr; gap: 36px; padding: 56px 24px; }
  .hero__visual { order: -1; }
  .weave-card { max-width: 320px; aspect-ratio: 16/10; }
  .grid-2, .grid-2--wide, .grid-2--form, .grid-2--contacts { grid-template-columns: 1fr; gap: 36px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cards--compact { grid-template-columns: repeat(2, 1fr); }
  .industries { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 760px) {
  .nav, .header__cta { display: none; }
  .nav-toggle { display: flex; }
  .nav.is-open {
    display: flex;
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    background: #fff;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav.is-open a { padding: 10px 0; }
  .section { padding: 60px 0; }
  .hero__stats { grid-template-columns: 1fr; gap: 18px; }
  .form__row { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .contacts li { grid-template-columns: 1fr; gap: 2px; }
  .industries { grid-template-columns: repeat(2, 1fr); }
}

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}