/* ============================================================
   ТЕМА «ЧИСТО.ДОМ» — белый воздух, аква, солнечный акцент
   ============================================================ */
:root {
  --bg:        #FFFFFF;
  --surface:   #FFFFFF;
  --tint:      #EDF6F6;
  --ink:       #17313B;
  --ink-soft:  #5D7280;
  --accent:    #189A94;  /* аква */
  --accent-dn: #12807B;
  --sun:       #FFC53D;  /* солнечный — бейджи и детали */
  --dark:      #123B41;  /* тёмная секция формы */
  --dark-2:    #1B4B52;
  --on-dark:   #F2FAF9;
  --on-dark-soft: #9FC0C2;
  --line:      #DCE8E8;

  --font-display: "Rubik", -apple-system, sans-serif;
  --font-body:    "Rubik", -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, monospace;

  --radius: 16px;
  --container: 1120px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
ul[class], ol[class] { list-style: none; }
a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1 { font-size: clamp(1.9rem, 4.2vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 0.5em; }
h3 { font-size: 1.15rem; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: 24px; }
.container--narrow { max-width: 820px; }

.section { padding-block: clamp(64px, 9vw, 110px); }
.section--tint { background: var(--tint); }
.section--dark { background: var(--dark); color: var(--on-dark); }
.section__sub { max-width: 560px; color: var(--ink-soft); margin-bottom: 40px; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-dn);
  background: color-mix(in srgb, var(--accent) 12%, white);
  border-radius: 99px;
  padding: 6px 14px;
  margin-bottom: 16px;
}
.section--dark .eyebrow { background: rgba(255, 255, 255, 0.1); color: var(--sun); }

/* ---------- кнопки ---------- */
.btn {
  display: inline-block;
  padding: 15px 30px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid var(--accent);
  border-radius: 99px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  font-family: var(--font-body);
}
.btn:hover { background: var(--accent-dn); border-color: var(--accent-dn); }
.btn:active { transform: translateY(1px); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: var(--tint); border-color: var(--accent); color: var(--ink); }
.btn--small { padding: 10px 20px; font-size: 0.9rem; }
.btn--block { display: block; width: 100%; text-align: center; }

:focus-visible { outline: 3px solid var(--sun); outline-offset: 2px; }

/* ---------- шапка ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  text-decoration: none;
}
.logo__mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  border-radius: 12px;
  font-size: 1rem;
}
.logo em { font-style: normal; color: var(--accent); }
.nav { display: flex; gap: 22px; margin-inline: auto; }
.nav a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink-soft);
  transition: color 0.15s;
}
.nav a:hover { color: var(--ink); }
.header__actions { display: flex; align-items: center; gap: 18px; }
.header__phone { font-weight: 700; font-size: 0.95rem; text-decoration: none; white-space: nowrap; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer; }
.burger span { width: 24px; height: 2px; background: var(--ink); transition: transform 0.2s, opacity 0.2s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- хиро ---------- */
.hero { padding-block: clamp(64px, 9vw, 110px); overflow: hidden; }
.hero__inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.hero__sub { font-size: 1.12rem; color: var(--ink-soft); max-width: 540px; margin-top: 20px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 30px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.hero__badges li { position: relative; padding-left: 20px; }
.hero__badges li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 12px;
  height: 5px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

/* декоративные пузыри + карточка */
.hero__bubble { position: relative; min-height: 320px; }
.bubble {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, rgba(255, 255, 255, 0.85), color-mix(in srgb, var(--accent) 24%, white) 60%, color-mix(in srgb, var(--accent) 40%, white));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, white);
}
.bubble--1 { width: 220px; height: 220px; top: 0; right: 8%; }
.bubble--2 { width: 90px; height: 90px; bottom: 12%; left: 4%; }
.bubble--3 { width: 46px; height: 46px; top: 18%; left: 22%; background: radial-gradient(circle at 32% 30%, #fff, color-mix(in srgb, var(--sun) 45%, white)); border-color: color-mix(in srgb, var(--sun) 50%, white); }
.hero__card {
  position: absolute;
  bottom: 6%;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 44px rgba(23, 49, 59, 0.12);
  padding: 22px 26px;
  min-width: 220px;
}
.hero__card-title { font-size: 0.82rem; color: var(--ink-soft); }
.hero__card-num { font-size: 1.7rem; font-weight: 800; color: var(--accent-dn); margin: 2px 0; }
.hero__card-note { font-size: 0.82rem; color: var(--ink-soft); }

/* ---------- табы ---------- */
.tabs { margin-top: 40px; }
.tabs__nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.tabs__btn {
  padding: 12px 24px;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s;
}
.tabs__btn:hover { border-color: var(--accent); color: var(--ink); }
.tabs__btn.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.tabs__panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 32px;
}
.tabs__head { margin-bottom: 24px; }
.tabs__price { font-size: 1.5rem; font-weight: 800; color: var(--accent-dn); }
.tabs__price span { font-size: 0.9rem; font-weight: 500; color: var(--ink-soft); }
.tabs__desc { color: var(--ink-soft); margin-top: 6px; max-width: 560px; }
.checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 32px;
  font-size: 0.97rem;
}
.checklist li { position: relative; padding-left: 28px; }
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 14px;
  height: 7px;
  border-left: 2.5px solid var(--accent);
  border-bottom: 2.5px solid var(--accent);
  transform: rotate(-45deg);
}

/* ---------- калькулятор ---------- */
.calc {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 22px;
  margin-top: 40px;
}
.calc__controls,
.calc__result {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 30px;
}
.calc__result { background: var(--tint); border-color: transparent; display: flex; flex-direction: column; }
.calc__field { margin-bottom: 28px; border: 0; }
.calc__field label, .calc__field legend { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 14px; }
.calc__range-row { display: flex; align-items: center; gap: 18px; }
.calc__range-row output {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  min-width: 84px;
  text-align: right;
  color: var(--accent-dn);
}
input[type="range"] {
  flex: 1;
  appearance: none;
  height: 8px;
  border-radius: 99px;
  background: var(--tint);
  border: 1px solid var(--line);
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  border: 4px solid #fff;
  box-shadow: 0 2px 8px rgba(23, 49, 59, 0.3);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 4px solid #fff;
  box-shadow: 0 2px 8px rgba(23, 49, 59, 0.3);
}
.calc__radios { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { cursor: pointer; }
.chip input { position: absolute; opacity: 0; }
.chip span {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 99px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-soft);
  transition: all 0.15s;
}
.chip input:checked + span { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip input:focus-visible + span { outline: 3px solid var(--sun); outline-offset: 2px; }
.calc__check { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 0.95rem; color: var(--ink-soft); }
.calc__check input { width: 18px; height: 18px; accent-color: var(--accent); }
.calc__result-label { font-size: 0.9rem; color: var(--ink-soft); }
.calc__result-num { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 800; color: var(--accent-dn); margin: 8px 0 14px; }
.calc__result-note { font-size: 0.9rem; color: var(--ink-soft); flex: 1; margin-bottom: 24px; }

/* ---------- почему мы ---------- */
.feats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 44px;
}
.feat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.feat__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--tint);
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.feat h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feat p { font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- отзывы ---------- */
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 44px; }
.review {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px rgba(23, 49, 59, 0.05);
}
.review p { flex: 1; font-size: 0.97rem; }
.review footer { margin-top: 18px; font-size: 0.88rem; color: var(--ink-soft); }

/* ---------- FAQ ---------- */
.faq { margin-top: 40px; display: grid; gap: 12px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 24px; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 20px 36px 20px 0;
  position: relative;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.2s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding-bottom: 22px; color: var(--ink-soft); font-size: 0.97rem; }

/* ---------- форма ---------- */
.lead { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.lead__text > p:not(.eyebrow) { color: var(--on-dark-soft); margin-top: 16px; max-width: 460px; }
.lead__contacts { margin-top: 30px; display: grid; gap: 10px; font-size: 0.98rem; }
.lead__contacts a { color: var(--sun); text-decoration: none; }
.lead__contacts a:hover { text-decoration: underline; }
.form { background: var(--dark-2); border: 1px solid #2A5B62; border-radius: var(--radius); padding: 34px 30px; }
.form__field { margin-bottom: 20px; }
.form__field label { display: block; font-weight: 600; font-size: 0.92rem; margin-bottom: 8px; }
.form__field label span { font-weight: 400; color: var(--on-dark-soft); }
.form input[type="text"],
.form input[type="tel"],
.form textarea {
  width: 100%;
  padding: 13px 16px;
  background: var(--dark);
  border: 1px solid #2A5B62;
  border-radius: 12px;
  color: var(--on-dark);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.15s;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--sun); }
.form input::placeholder, .form textarea::placeholder { color: #6C8F93; }
.form textarea { resize: vertical; }
.form__consent {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.85rem;
  color: var(--on-dark-soft);
  margin-bottom: 22px;
  cursor: pointer;
}
.form__consent input { margin-top: 3px; accent-color: var(--accent); }
.form .btn { background: var(--sun); border-color: var(--sun); color: #123B41; font-weight: 700; }
.form .btn:hover { background: #E8AF26; border-color: #E8AF26; }
.form__status { margin-top: 14px; font-size: 0.92rem; min-height: 1.4em; }
.form__status.is-ok { color: #9FD8A3; }
.form__status.is-err { color: #F0A0A0; }

/* ---------- футер ---------- */
.footer { background: var(--dark); color: var(--on-dark-soft); padding-block: 28px; font-size: 0.85rem; border-top: 1px solid #2A5B62; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 8px 32px; justify-content: space-between; }
.footer a { color: inherit; }

/* ---------- появление при скролле ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- адаптив ---------- */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__bubble { display: none; }
  .feats { grid-template-columns: repeat(2, 1fr); }
  .reviews { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; margin-top: 44px; }
  .calc { grid-template-columns: 1fr; }
  .lead { grid-template-columns: 1fr; }
  .header__phone { display: none; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav {
    position: fixed;
    inset: 68px 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    transform: translateY(-130%);
    transition: transform 0.25s ease;
    z-index: 40;
  }
  .nav.is-open { transform: none; }
  .nav a { padding: 12px 0; font-size: 1.05rem; }
  .burger { display: flex; }
  .header__actions .btn { display: none; }
  .feats { grid-template-columns: 1fr; }
  .checklist { grid-template-columns: 1fr; }
  .tabs__panel { padding: 26px 22px; }
}