/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brown:    #8b6540;
  --brown-dk: #5c3d20;
  --brown-lt: #d4b896;
  --cream:    #faf5ef;
  --white:    #ffffff;
  --text:     #2d2015;
  --text-sec: #6b5040;
  --border:   #e8d8c8;
  --radius:   10px;
  --shadow:   0 4px 24px rgba(90,60,30,.10);
  --transition: .2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--cream);
}

a { color: var(--brown); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--brown-dk); }

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
}
.btn--primary {
  background: var(--brown);
  color: var(--white);
  border-color: var(--brown);
}
.btn--primary:hover {
  background: var(--brown-dk);
  border-color: var(--brown-dk);
  color: var(--white);
}
.btn--outline {
  background: transparent;
  color: var(--brown);
  border-color: var(--brown);
}
.btn--outline:hover {
  background: var(--brown);
  color: var(--white);
}
.btn--sm {
  padding: 8px 18px;
  font-size: 14px;
  background: var(--brown);
  color: var(--white);
  border-color: var(--brown);
  border-radius: 8px;
}
.btn--sm:hover {
  background: var(--brown-dk);
  border-color: var(--brown-dk);
  color: var(--white);
}
.btn--full { width: 100%; }

/* === SECTION === */
.section { padding: 80px 0; }

.section__header {
  text-align: center;
  margin-bottom: 52px;
}
.section__header h2 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.section__header p {
  color: var(--text-sec);
  font-size: 17px;
  max-width: 560px;
  margin: 0 auto;
}

/* === HEADER === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(90,60,30,.06);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
}
.logo:hover { color: var(--text); }
.logo__icon { font-size: 24px; }
.logo__text strong { color: var(--brown); }
.logo--white .logo__text, .logo--white { color: rgba(255,255,255,.9); }
.logo--white strong { color: var(--white); }

.nav {
  display: flex;
  gap: 32px;
}
.nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  position: relative;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brown);
  transition: width var(--transition);
}
.nav a:hover::after { width: 100%; }
.nav a:hover { color: var(--brown); }

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

/* === HERO === */
.hero {
  background: linear-gradient(135deg, #fdf8f3 0%, #f0e4d4 100%);
  padding: 80px 0 60px;
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero__text h1 {
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 20px;
}
.hero__text p {
  font-size: 18px;
  color: var(--text-sec);
  margin-bottom: 36px;
  max-width: 440px;
}
.hero__buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__image { display: flex; justify-content: center; }
.hero__img-placeholder {
  width: 100%;
  max-width: 480px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* === ABOUT === */
.about { background: var(--white); }
.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.about__card {
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--cream);
  border: 1px solid var(--border);
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}
.about__card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.about__icon { font-size: 40px; margin-bottom: 16px; }
.about__card h3 { font-size: 18px; margin-bottom: 10px; color: var(--text); }
.about__card p  { color: var(--text-sec); font-size: 15px; }

/* === CATALOG === */
.catalog { background: var(--cream); }
.catalog__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.catalog__item {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(90,60,30,.06);
  transition: box-shadow var(--transition), transform var(--transition);
}
.catalog__item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.catalog__img {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.catalog__img svg { height: 140px; width: auto; }
.catalog__info {
  padding: 20px 24px 24px;
}
.catalog__info h3 { font-size: 18px; margin-bottom: 8px; }
.catalog__info p  { color: var(--text-sec); font-size: 14px; margin-bottom: 16px; }

/* === ADVANTAGES === */
.advantages { background: var(--brown); }
.advantages .section__header h2 { color: var(--white); }
.advantages__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage {
  background: rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid rgba(255,255,255,.15);
}
.advantage__num {
  font-size: 40px;
  font-weight: 800;
  color: rgba(255,255,255,.25);
  margin-bottom: 10px;
  line-height: 1;
}
.advantage h3 { font-size: 17px; color: var(--white); margin-bottom: 10px; }
.advantage p  { color: rgba(255,255,255,.8); font-size: 14px; line-height: 1.6; }

/* === CONTACT === */
.contact { background: var(--white); }
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact__form {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.form__group { margin-bottom: 20px; }
.form__group label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--text);
}
.form__group input,
.form__group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition);
  resize: vertical;
}
.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--brown);
}
.form__success {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  background: #e8f5e9;
  border-radius: 8px;
  color: #2e7d32;
  font-weight: 500;
  font-size: 14px;
  text-align: center;
}

.contact__info { display: flex; flex-direction: column; gap: 28px; padding-top: 8px; }
.contact__item { display: flex; gap: 16px; align-items: flex-start; }
.contact__icon { font-size: 28px; flex-shrink: 0; }
.contact__item strong { display: block; font-size: 15px; margin-bottom: 4px; }
.contact__item p, .contact__item a { color: var(--text-sec); font-size: 15px; }
.contact__item a:hover { color: var(--brown); }

/* === FOOTER === */
.footer {
  background: var(--brown-dk);
  padding: 28px 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__copy { color: rgba(255,255,255,.6); font-size: 13px; }
.footer__nav { display: flex; gap: 24px; }
.footer__nav a { color: rgba(255,255,255,.7); font-size: 14px; }
.footer__nav a:hover { color: var(--white); }

/* === SCROLL TOP === */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  background: var(--brown);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 16px rgba(90,60,30,.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), background var(--transition);
}
.scroll-top.visible { opacity: 1; pointer-events: all; }
.scroll-top:hover { background: var(--brown-dk); color: var(--white); }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .advantages__grid { grid-template-columns: repeat(2, 1fr); }
  .catalog__grid    { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }

  .nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    gap: 0;
  }
  .nav.open { display: flex; }
  .nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
  }
  .nav a:last-child { border-bottom: none; }
  .burger { display: flex; }

  .hero { padding: 48px 0 36px; }
  .hero__inner { grid-template-columns: 1fr; gap: 36px; }
  .hero__image { display: none; }

  .about__grid   { grid-template-columns: 1fr; }
  .catalog__grid { grid-template-columns: 1fr; }
  .advantages__grid { grid-template-columns: 1fr; }
  .contact__inner   { grid-template-columns: 1fr; gap: 36px; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__nav   { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .hero__buttons { flex-direction: column; }
  .btn { width: 100%; }
  .contact__form { padding: 24px 20px; }
}