@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600&family=Inter:wght@300;400;500&display=swap');

/* ── Design Tokens ── */
:root {
  --bg:         #FFFFFF;
  --text:       #1A1A2E;
  --accent:     #1E3A8A;
  --accent-hover: #2563EB;
  --silver:     #C0C0C0;
  --silver-light: #E8E8E8;
  --radius:     2px;
  --font-head:  'Cormorant Garamond', serif;
  --font-body:  'Inter', sans-serif;
  --max-w:      1280px;
  --header-h:   72px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--text); background: var(--bg); font-size: 16px; line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font-body); }

/* ── Typography ── */
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 500; line-height: 1.2; }
h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: 0.02em; }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
h3 { font-size: 1.4rem; }

/* ── Layout ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }

/* ── Header ── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h); display: flex; align-items: center;
  transition: background 0.3s, box-shadow 0.3s;
}
.header--solid { background: var(--accent); box-shadow: 0 2px 16px rgba(30,58,138,0.18); }
.header--solid .nav a { color: #fff; opacity: 0.85; }
.header--solid .nav a:hover { opacity: 1; }
.header--solid .header__logo span { color: #fff; }
.header--solid .lang-btn { border-color: rgba(255,255,255,0.4); color: #fff; }
.header--solid .lang-btn.active { background: #fff; color: var(--accent); border-color: #fff; }
.header--solid .lang-btn:hover:not(.active) { border-color: #fff; color: #fff; opacity: 0.8; }
.header--solid .burger span { background: #fff; }
.header--transparent { background: transparent; }
.header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.header__logo { color: var(--text); }
.header__logo img { height: 32px; }
.header__logo span { font-family: var(--font-head); font-size: 1.25rem; letter-spacing: 2px; white-space: nowrap; }
.header--solid .header__logo { color: #fff; }
.header--transparent .header__logo { color: var(--text); }
.nav { display: flex; align-items: center; gap: 32px; }
.nav a { font-size: 0.875rem; letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.7; transition: opacity 0.2s; }
.nav a:hover { opacity: 1; }
.lang-switcher { display: flex; gap: 4px; margin-left: 16px; }
.lang-btn {
  background: none; border: 1px solid var(--silver); padding: 4px 10px;
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: var(--radius); transition: all 0.2s; color: var(--text);
}
.lang-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.lang-btn:hover:not(.active) { border-color: var(--accent); color: var(--accent); }

/* ── Burger (mobile) ── */
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 4px; }
.burger span { display: block; width: 24px; height: 2px; background: var(--text); transition: all 0.3s; }
.mobile-nav { display: none; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; font-size: 0.875rem; letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: var(--radius); border: none; transition: all 0.2s; font-weight: 500;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); }
.btn--outline { background: transparent; color: var(--text); border: 1px solid var(--text); }
.btn--outline:hover { background: var(--text); color: #fff; }
.btn--whatsapp { background: #25D366; color: #fff; }
.btn--whatsapp:hover { background: #1EBE5C; }
.btn--telegram { background: #0088CC; color: #fff; }
.btn--telegram:hover { background: #0070A8; }
.btn--instagram { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); color: #fff; }
.btn--instagram:hover { opacity: 0.9; }

/* ── Hero ── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  background: linear-gradient(135deg, #f8f9ff 0%, #eef2ff 50%, #f0f4ff 100%);
  padding-top: var(--header-h);
  overflow: hidden;
}
.hero__split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; width: 100%;
}
.hero__content { max-width: 540px; }
.hero__tagline { font-size: 0.875rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 24px; }
.hero h1 { margin-bottom: 32px; }
.hero__buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__image { display: flex; justify-content: center; align-items: center; }
.hero__image img, .hero__image video {
  width: 100%; max-width: 480px; height: 430px;
  object-fit: contain; border-radius: var(--radius);
  box-shadow: 0 24px 64px rgba(30, 58, 138, 0.15);
}

/* ── Brand photo ── */
.brand-photo-wrap { margin: 40px auto; text-align: center; }
.brand-photo { max-height: 700px; width: auto; max-width: 100%; margin: 0 auto; border-radius: var(--radius); }

/* ── Features ── */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
.feature { text-align: center; padding: 32px 24px; border: 1px solid var(--silver-light); }
.feature__icon {
  font-family: var(--font-head); font-size: 3rem; font-weight: 500;
  color: var(--accent); margin-bottom: 16px; letter-spacing: 0.05em; line-height: 1;
}
.feature h3 { margin-bottom: 8px; }
.feature p { font-size: 0.875rem; opacity: 0.7; }

/* ── Contact info ── */
.contact-info { font-size: 0.9375rem; opacity: 0.75; margin-bottom: 24px; }
.contact-info a { color: var(--accent); text-decoration: underline; }

/* ── Product Card ── */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card { display: block; }
.card__img { aspect-ratio: 1; overflow: hidden; background: var(--silver-light); margin-bottom: 12px; }
.card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.card:hover .card__img img { transform: scale(1.05); }
.card__name { font-family: var(--font-head); font-size: 1.1rem; margin-bottom: 4px; }
.card__price { font-size: 0.875rem; color: var(--accent); font-weight: 500; }
.card__price-wrap { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.card__price-promo { font-size: 1rem; color: #27ae60; font-weight: 700; }
.card__price-old { font-size: 0.75rem; color: #999; text-decoration: line-through; }
.card__code { font-size: 0.65rem; color: #aaa; margin-top: 4px; line-height: 1.3; }

/* ── Product page dual price ── */
.price-wrap { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
.price-promo { font-size: 1.6rem; color: #27ae60; font-weight: 700; font-family: var(--font-head); }
.price-old { font-size: 1rem; color: #999; text-decoration: line-through; }
.price-badge { background: #27ae60; color: #fff; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; padding: 3px 8px; border-radius: 3px; text-transform: uppercase; }

/* ── Section titles ── */
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { margin-bottom: 12px; }
.section-title p { opacity: 0.6; max-width: 480px; margin: 0 auto; }

/* ── Contact block ── */
.contact-block { text-align: center; padding: 80px 0; background: var(--silver-light); }
.contact-block h2 { margin-bottom: 32px; }
.contact-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ── Catalog filters ── */
.catalog-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; flex-wrap: wrap; gap: 16px; }
.catalog-count { font-size: 0.875rem; opacity: 0.6; }
.search-bar { position: relative; }
.search-bar input {
  width: 320px; padding: 10px 16px 10px 40px;
  border: 1px solid var(--silver); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.875rem; outline: none;
  transition: border-color 0.2s;
}
.search-bar input:focus { border-color: var(--accent); }
.search-bar__icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); opacity: 0.4; pointer-events: none; }
.filters { display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; align-items: center; }
.filter-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  padding: 6px 16px; border: 1px solid var(--silver);
  border-radius: var(--radius); font-size: 0.8rem; letter-spacing: 0.05em;
  background: none; color: var(--text); transition: all 0.2s; cursor: pointer;
}
.tag.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.tag:hover:not(.active) { border-color: var(--accent); color: var(--accent); }
.filter-group { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; }
.filter-group label { opacity: 0.6; white-space: nowrap; }
.filter-group input[type="range"] { width: 100px; accent-color: var(--accent); }
.filter-group select {
  padding: 6px 12px; border: 1px solid var(--silver); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 0.8rem; outline: none; background: var(--bg);
}
.filter-value { font-size: 0.8rem; min-width: 48px; }

/* ── Pagination ── */
.pagination { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 48px; }
.page-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--silver); border-radius: var(--radius);
  background: none; font-size: 0.875rem; transition: all 0.2s; cursor: pointer;
}
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn:hover:not(.active):not(:disabled) { border-color: var(--accent); color: var(--accent); }
.page-btn:disabled { opacity: 0.3; cursor: default; }
.page-nav { padding: 0 12px; }

/* ── Product page ── */
.product-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; padding-top: calc(var(--header-h) + 40px); }
.gallery__main { aspect-ratio: 1; overflow: hidden; background: var(--silver-light); margin-bottom: 12px; }
.gallery__main img { width: 100%; height: 100%; object-fit: cover; }
.gallery__thumbs { display: flex; gap: 8px; }
.gallery__thumb {
  width: 72px; height: 72px; object-fit: cover; cursor: pointer;
  border: 2px solid transparent; transition: border-color 0.2s;
}
.gallery__thumb.active { border-color: var(--accent); }
.gallery__thumb--video {
  display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff; font-size: 1.2rem;
  cursor: pointer; border-radius: var(--radius);
}
.product-info { position: sticky; top: calc(var(--header-h) + 40px); }
.product-article { font-size: 0.75rem; letter-spacing: 0.15em; opacity: 0.4; text-transform: uppercase; margin-bottom: 8px; }
.product-info h1 { font-size: clamp(1.8rem, 3vw, 2.5rem); margin-bottom: 16px; }
.product-price { font-size: 1.5rem; color: var(--accent); font-weight: 500; margin-bottom: 32px; }
.specs-table { width: 100%; border-collapse: collapse; margin-bottom: 32px; }
.specs-table tr { border-bottom: 1px solid var(--silver-light); }
.specs-table td { padding: 10px 0; font-size: 0.875rem; }
.specs-table td:first-child { opacity: 0.5; width: 40%; }
.product-description { font-size: 0.9375rem; opacity: 0.7; line-height: 1.7; margin-bottom: 32px; }
.product-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── Similar ── */
.similar { padding: 64px 0; }

/* ── About ── */
.about-hero { padding: calc(var(--header-h) + 80px) 0 80px; }
.about-content { max-width: 720px; }
.about-content h1 { margin-bottom: 32px; }
.about-content p { font-size: 1rem; opacity: 0.75; line-height: 1.8; margin-bottom: 24px; }
.why-lab { background: var(--silver-light); padding: 80px 0; }
.why-lab h2 { margin-bottom: 48px; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.why-item h3 { margin-bottom: 12px; font-size: 1.1rem; }
.why-item p { font-size: 0.875rem; opacity: 0.7; line-height: 1.7; }

/* ── Footer ── */
.footer { background: var(--text); color: #fff; padding: 32px 0; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer__brand { font-family: var(--font-head); font-size: 1.25rem; letter-spacing: 2px; }
.footer__rights { font-size: 0.8rem; opacity: 0.4; }
.footer__links { display: flex; gap: 16px; }
.footer__links a { font-size: 0.8rem; opacity: 0.5; transition: opacity 0.2s; }
.footer__links a:hover { opacity: 1; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .nav { display: none; }
  .burger { display: flex; }
  .mobile-nav.open { display: flex; flex-direction: column; gap: 24px; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--bg); padding: 32px 24px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); z-index: 99; }
  .mobile-nav a { font-size: 1.1rem; letter-spacing: 0.05em; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .features { grid-template-columns: 1fr; }
  .product-layout { grid-template-columns: 1fr; gap: 32px; }
  .product-info { position: static; }
  .search-bar input { width: 100%; }
  .catalog-header { flex-direction: column; align-items: flex-start; }
  .why-grid { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
  .hero__split { grid-template-columns: 1fr; }
  .hero__image { order: -1; }
  .hero__image img, .hero__image video { height: 220px; max-width: 100%; }
}
@media (max-width: 480px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .section { padding: 48px 0; }
}