/* ===================================================
   ZI-VW ВОЗИЛА МК — Main Stylesheet
   =================================================== */

/* ── Variables ──────────────────────────────────── */
:root {
  --primary:       #001E50;
  --primary-light: #0A3575;
  --accent:        #1B8EF8;
  --accent-dark:   #0070CC;
  --dark:          #0D1117;
  --silver:        #8C939F;
  --light:         #F4F6FA;
  --white:         #FFFFFF;
  --text:          #1A202C;
  --text-muted:    #64748B;
  --border:        #E2E8F0;
  --success:       #22C55E;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow:        0 4px 16px rgba(0,0,0,.1);
  --shadow-lg:     0 10px 40px rgba(0,0,0,.15);
  --radius:        14px;
  --radius-sm:     8px;
  --radius-xs:     6px;
  --transition:    .25s ease;
  --max-w:         1240px;
}

/* ── Reset ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Utilities ──────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 5rem 0; }
.accent     { color: var(--accent); }

.section__header { text-align: center; margin-bottom: 3rem; }
.section__title  {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: .5rem;
}
.section__subtitle { color: var(--text-muted); font-size: 1.05rem; }

/* ── Buttons ────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 2rem; border-radius: var(--radius-sm);
  font-size: .95rem; font-weight: 600; transition: var(--transition);
  white-space: nowrap; text-align: center;
}
.btn--primary  { background: var(--accent); color: var(--white); }
.btn--primary:hover  { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(27,142,248,.35); }
.btn--outline  { border: 2px solid rgba(255,255,255,.7); color: var(--white); }
.btn--outline:hover  { background: rgba(255,255,255,.15); }
.btn--dark     { background: var(--primary); color: var(--white); }
.btn--dark:hover     { background: var(--primary-light); transform: translateY(-1px); }
.btn--white    { background: var(--white); color: var(--primary); font-weight: 700; }
.btn--white:hover    { background: var(--light); transform: translateY(-1px); }
.btn--ghost    { border: 2px solid var(--border); color: var(--text); }
.btn--ghost:hover    { border-color: var(--accent); color: var(--accent); }

/* ═══════════════════════════════════════════════════
   HEADER / NAV
════════════════════════════════════════════════════ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(0, 30, 80, .97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,.3); }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 1.5rem;
}

.nav__logo {
  display: flex; align-items: center; gap: .75rem;
  flex-shrink: 0;
}
.logo-icon {
  background: var(--accent); border-radius: 6px;
  padding: .28rem .55rem;
  font-size: .95rem; font-weight: 900; line-height: 1;
  color: var(--white); letter-spacing: .04em;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-main { font-size: 1.2rem; font-weight: 800; color: var(--white); letter-spacing: .04em; }
.logo-main .logo-accent-text { color: var(--accent); }
.logo-sub  { font-size: .65rem; font-weight: 500; color: var(--silver); letter-spacing: .1em; text-transform: uppercase; }

.nav__menu {
  display: flex; align-items: center; gap: .25rem;
  flex: 1; justify-content: center;
}
.nav__link {
  padding: .45rem 1rem; border-radius: var(--radius-xs);
  color: rgba(255,255,255,.8); font-size: .9rem; font-weight: 500;
  transition: var(--transition);
}
.nav__link:hover, .nav__link.active {
  color: var(--white); background: rgba(255,255,255,.1);
}

.nav__actions { display: flex; align-items: center; gap: 1rem; flex-shrink: 0; }

.lang-switcher { display: flex; align-items: center; gap: .4rem; color: rgba(255,255,255,.4); font-size: .85rem; }
.lang-btn { padding: .25rem .55rem; border-radius: 4px; font-size: .8rem; font-weight: 600; color: rgba(255,255,255,.6); transition: var(--transition); }
.lang-btn.active, .lang-btn:hover { color: var(--white); background: rgba(255,255,255,.15); }

.nav__toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 32px; padding: 4px;
}
.nav__toggle span {
  display: block; height: 2px; background: var(--white);
  border-radius: 2px; transition: var(--transition);
}
.nav__toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ═══════════════════════════════════════════════════
   HERO
════════════════════════════════════════════════════ */
.hero {
  min-height: 100vh; padding-top: 72px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 60%, #0A3575 100%);
  display: flex; align-items: center;
  position: relative; overflow: hidden;
}
.hero__content {
  position: relative; z-index: 2;
  padding: 6rem 1.5rem 5rem;
  max-width: var(--max-w); margin: 0 auto; width: 100%;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(27,142,248,.2); border: 1px solid rgba(27,142,248,.4);
  color: var(--accent); padding: .4rem 1rem; border-radius: 100px;
  font-size: .85rem; font-weight: 500; margin-bottom: 1.5rem;
}
.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900; color: var(--white); line-height: 1.1;
  margin-bottom: 1.25rem; letter-spacing: -.02em;
}
.hero__subtitle {
  font-size: 1.15rem; color: rgba(255,255,255,.7);
  max-width: 520px; margin-bottom: 2.5rem; line-height: 1.7;
}
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* hero background decorations */
.hero__bg { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.hero__circle {
  position: absolute; border-radius: 50%;
  background: rgba(27,142,248,.08);
  border: 1px solid rgba(27,142,248,.12);
}
.hero__circle--1 { width: 600px; height: 600px; right: -150px; top: -100px; }
.hero__circle--2 { width: 350px; height: 350px; right: 80px; top: 100px; background: rgba(27,142,248,.05); }
.hero__vw-logo {
  position: absolute; right: 12%; top: 50%; transform: translateY(-50%);
  font-size: clamp(8rem, 18vw, 18rem); font-weight: 900;
  color: rgba(255,255,255,.03); letter-spacing: -.05em; user-select: none;
  line-height: 1;
}

/* hero stats bar */
.hero__stats {
  display: flex; gap: 2.5rem; margin-top: 4rem;
  padding-top: 2rem; border-top: 1px solid rgba(255,255,255,.1);
}
.hero__stat-num  { font-size: 2rem; font-weight: 800; color: var(--white); }
.hero__stat-label { font-size: .8rem; color: rgba(255,255,255,.5); text-transform: uppercase; letter-spacing: .08em; }

/* ═══════════════════════════════════════════════════
   SEARCH BAR
════════════════════════════════════════════════════ */
.search-section {
  background: var(--white);
  padding: 2rem 0;
  box-shadow: 0 4px 20px rgba(0,0,0,.08);
  position: relative; z-index: 10;
}
.search-box {
  display: flex; gap: .75rem;
  background: var(--light); border: 2px solid var(--border);
  border-radius: var(--radius); padding: .5rem .5rem .5rem 1.25rem;
  transition: var(--transition); max-width: 700px; margin: 0 auto;
}
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(27,142,248,.1); }
.search-input {
  flex: 1; border: none; background: none; outline: none;
  font-size: 1rem; color: var(--text);
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
  background: var(--accent); color: var(--white);
  padding: .65rem 1.5rem; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600; transition: var(--transition);
  flex-shrink: 0;
}
.search-btn:hover { background: var(--accent-dark); }

/* ═══════════════════════════════════════════════════
   MODELS GRID
════════════════════════════════════════════════════ */
.models { background: var(--light); }
.models__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}
.model-card {
  background: var(--white); border-radius: var(--radius);
  padding: 1.5rem 1rem; text-align: center;
  border: 2px solid var(--border);
  transition: var(--transition); cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
}
.model-card:hover {
  border-color: var(--accent); transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.model-card--all { background: var(--primary); border-color: var(--primary); }
.model-card--all .model-card__name,
.model-card--all .model-card__years,
.model-card--all .model-card__icon { color: var(--white); }
.model-card--all:hover { background: var(--primary-light); border-color: var(--primary-light); }

.model-card__icon { font-size: 2.5rem; line-height: 1; }
.model-card__name { font-size: 1rem; font-weight: 700; color: var(--primary); }
.model-card__years { font-size: .78rem; color: var(--text-muted); }

/* ═══════════════════════════════════════════════════
   CATEGORIES GRID
════════════════════════════════════════════════════ */
.categories { background: var(--white); }
.categories__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}
.cat-card {
  padding: 1.75rem 1rem; border-radius: var(--radius);
  background: var(--light); border: 2px solid transparent;
  text-align: center; transition: var(--transition);
  display: flex; flex-direction: column; align-items: center; gap: .75rem;
}
.cat-card:hover {
  background: var(--white); border-color: var(--accent);
  transform: translateY(-3px); box-shadow: var(--shadow);
}
.cat-card__icon { font-size: 2.25rem; }
.cat-card h3 { font-size: .9rem; font-weight: 600; color: var(--primary); }

/* ═══════════════════════════════════════════════════
   WHY US
════════════════════════════════════════════════════ */
.why-us {
  background: var(--primary);
  position: relative; overflow: hidden;
}
.why-us .section__title { color: var(--white); }
.why-us__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 2rem 1.5rem;
  transition: var(--transition);
}
.feature-card:hover {
  background: rgba(255,255,255,.12); transform: translateY(-3px);
}
.feature-card__icon { font-size: 2.5rem; margin-bottom: 1rem; }
.feature-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--white); margin-bottom: .5rem; }
.feature-card p  { font-size: .9rem; color: rgba(255,255,255,.65); line-height: 1.6; }

/* ═══════════════════════════════════════════════════
   CTA BANNER
════════════════════════════════════════════════════ */
.cta-banner {
  background: linear-gradient(135deg, var(--accent) 0%, #005FA3 100%);
  padding: 4rem 0; text-align: center;
}
.cta-banner h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800; color: var(--white); margin-bottom: .75rem;
}
.cta-banner p { color: rgba(255,255,255,.8); font-size: 1.1rem; margin-bottom: 2rem; }

/* ═══════════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════════════ */
.footer {
  background: var(--dark); padding: 4rem 0 0;
  border-top: 1px solid rgba(255,255,255,.05);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem; padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__brand .nav__logo { margin-bottom: 1rem; }
.footer__brand p { font-size: .9rem; color: var(--silver); line-height: 1.7; max-width: 300px; }
.footer__links h4,
.footer__contact h4 {
  font-size: .8rem; font-weight: 700; color: var(--white);
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: 1rem;
}
.footer__links ul { display: flex; flex-direction: column; gap: .5rem; }
.footer__links a { font-size: .9rem; color: var(--silver); transition: var(--transition); }
.footer__links a:hover { color: var(--accent); }
.footer__contact p { font-size: .9rem; color: var(--silver); margin-bottom: .5rem; }
.footer__contact a { color: var(--silver); transition: var(--transition); }
.footer__contact a:hover { color: var(--accent); }

.social-links { display: flex; gap: .75rem; margin-top: 1rem; }
.social-btn {
  padding: .5rem 1rem; border-radius: var(--radius-xs);
  font-size: .8rem; font-weight: 600; transition: var(--transition);
}
.social-btn.facebook  { background: #1877F2; color: var(--white); }
.social-btn.facebook:hover  { background: #1464CC; }
.social-btn.whatsapp  { background: #25D366; color: var(--white); }
.social-btn.whatsapp:hover  { background: #1BAB52; }

.footer__bottom {
  text-align: center; padding: 1.5rem 0;
  font-size: .85rem; color: rgba(255,255,255,.25);
}

/* ═══════════════════════════════════════════════════
   WHATSAPP FLOAT
════════════════════════════════════════════════════ */
.whatsapp-float {
  position: fixed; bottom: 1.75rem; right: 1.75rem; z-index: 999;
  background: #25D366; color: var(--white);
  width: 58px; height: 58px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 24px rgba(37,211,102,.4);
  transition: var(--transition);
}
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 8px 30px rgba(37,211,102,.55); }
.whatsapp-float svg { width: 28px; height: 28px; }

/* ═══════════════════════════════════════════════════
   CATALOG PAGE
════════════════════════════════════════════════════ */
.page-hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
  padding: 8rem 0 4rem; text-align: center;
}
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; color: var(--white); margin-bottom: .5rem; }
.page-hero p  { color: rgba(255,255,255,.65); font-size: 1.05rem; }

.catalog-layout {
  display: grid; grid-template-columns: 260px 1fr;
  gap: 2rem; padding: 3rem 0;
}

/* Sidebar */
.sidebar {
  align-self: start;
}
.filter-panel {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1rem;
}
.filter-panel h3 {
  font-size: .85rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-muted); margin-bottom: 1rem;
}
.filter-options { display: flex; flex-direction: column; gap: .5rem; }
.filter-option {
  display: flex; align-items: center; gap: .65rem; cursor: pointer;
  font-size: .9rem; color: var(--text); padding: .35rem .5rem;
  border-radius: var(--radius-xs); transition: var(--transition);
}
.filter-option:hover { background: var(--light); }
.filter-option input[type="radio"],
.filter-option input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; cursor: pointer; }
.filter-option.active { color: var(--accent); font-weight: 600; }
.clear-filters {
  width: 100%; padding: .6rem; margin-top: .75rem;
  border: 1px solid var(--border); border-radius: var(--radius-xs);
  font-size: .85rem; color: var(--text-muted); transition: var(--transition);
}
.clear-filters:hover { border-color: var(--accent); color: var(--accent); }

/* Product grid */
.catalog-main {}
.catalog-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.5rem; gap: 1rem; flex-wrap: wrap;
}
.catalog-count { font-size: .9rem; color: var(--text-muted); }
.catalog-count span { font-weight: 700; color: var(--text); }
.sort-select {
  padding: .5rem .9rem; border: 1px solid var(--border); border-radius: var(--radius-xs);
  font-size: .9rem; color: var(--text); outline: none; background: var(--white);
  transition: var(--transition); cursor: pointer;
}
.sort-select:focus { border-color: var(--accent); }

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}
.product-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition); display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.product-card.hidden { display: none; }

.product-card__img {
  height: 160px; background: var(--light);
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem; border-bottom: 1px solid var(--border);
  position: relative;
}
.product-card__badge {
  position: absolute; top: .75rem; left: .75rem;
  background: var(--accent); color: var(--white);
  font-size: .7rem; font-weight: 700; padding: .2rem .55rem;
  border-radius: 100px; text-transform: uppercase;
}
.product-card__body { padding: 1rem 1.1rem; flex: 1; display: flex; flex-direction: column; gap: .4rem; }
.product-card__model {
  font-size: .75rem; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: .06em;
}
.product-card__name { font-size: .95rem; font-weight: 700; color: var(--text); line-height: 1.35; }
.product-card__part { font-size: .78rem; color: var(--text-muted); font-family: monospace; }
.product-card__footer {
  padding: .85rem 1.1rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.product-card__price { font-size: 1rem; font-weight: 700; color: var(--primary); }
.product-card__btn {
  padding: .45rem 1rem; background: var(--accent); color: var(--white);
  border-radius: var(--radius-xs); font-size: .82rem; font-weight: 600;
  transition: var(--transition);
}
.product-card__btn:hover { background: var(--accent-dark); }

.no-results {
  text-align: center; padding: 4rem 2rem;
  color: var(--text-muted); display: none; grid-column: 1/-1;
}
.no-results.show { display: block; }
.no-results h3 { font-size: 1.2rem; margin-bottom: .5rem; color: var(--text); }

/* ═══════════════════════════════════════════════════
   ABOUT PAGE
════════════════════════════════════════════════════ */
.about-content { padding: 4rem 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-text h2 { font-size: clamp(1.75rem, 4vw, 2.25rem); font-weight: 800; color: var(--primary); margin-bottom: 1rem; }
.about-text p  { color: var(--text-muted); line-height: 1.8; margin-bottom: 1rem; }
.about-visual {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius); padding: 3rem 2rem; text-align: center; color: var(--white);
}
.stats-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem;
}
.stat-item { text-align: center; }
.stat-item .num { font-size: 2.5rem; font-weight: 900; color: var(--white); line-height: 1; }
.stat-item .lbl { font-size: .8rem; color: rgba(255,255,255,.7); text-transform: uppercase; letter-spacing: .06em; margin-top: .25rem; }

.about-values { padding: 4rem 0; background: var(--light); }

/* ═══════════════════════════════════════════════════
   CONTACT PAGE
════════════════════════════════════════════════════ */
.contact-section { padding: 4rem 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-form-wrap { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 2.5rem; }
.contact-form-wrap h2 { font-size: 1.5rem; font-weight: 800; color: var(--primary); margin-bottom: 1.5rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1rem; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: .7rem 1rem; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size: .9rem; font-family: inherit;
  color: var(--text); background: var(--white); outline: none;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(27,142,248,.1); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-submit { width: 100%; padding: .85rem; font-size: 1rem; font-weight: 700; border-radius: var(--radius-sm); }

.form-success {
  display: none; text-align: center; padding: 2rem;
  background: #F0FDF4; border: 1px solid #86EFAC; border-radius: var(--radius-sm);
  color: #166534; margin-top: 1rem;
}
.form-success.show { display: block; }

.contact-info { display: flex; flex-direction: column; gap: 1.25rem; }
.contact-info-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem;
  display: flex; gap: 1rem; align-items: flex-start;
}
.contact-info-card .icon { font-size: 1.75rem; flex-shrink: 0; }
.contact-info-card h4 { font-size: .85rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .35rem; }
.contact-info-card p, .contact-info-card a { font-size: .95rem; color: var(--text); }
.contact-info-card a:hover { color: var(--accent); }

.map-placeholder {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius); height: 200px;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.7); font-size: 1rem; text-align: center; padding: 1rem;
}

/* ═══════════════════════════════════════════════════
   PRODUCT DETAIL PAGE
════════════════════════════════════════════════════ */

/* Breadcrumb */
.breadcrumb {
  display: flex; align-items: center; gap: .5rem;
  font-size: .85rem; color: rgba(255,255,255,.55);
  margin-bottom: .75rem; flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,.55); transition: var(--transition); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb__sep { color: rgba(255,255,255,.25); }

/* Main grid */
.product-detail { padding: 4rem 0; }
.product-detail__grid {
  display: grid; grid-template-columns: 1fr 1.3fr;
  gap: 3rem; align-items: start;
}

/* Image panel */
.product-detail__img {
  position: sticky; top: 90px;
  background: var(--light); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 3rem 2rem;
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 1.5rem; text-align: center;
}
.product-detail__icon { font-size: 7rem; line-height: 1; }
.product-oem {
  font-size: .8rem; font-family: monospace; letter-spacing: .04em;
  background: var(--white); border: 1px solid var(--border);
  padding: .4rem .9rem; border-radius: var(--radius-xs); color: var(--text-muted);
}
.product-oem span { font-weight: 700; color: var(--text); }

/* Info panel */
.product-badges { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.badge {
  padding: .3rem .8rem; border-radius: 100px;
  font-size: .78rem; font-weight: 600;
}
.badge--model    { background: rgba(27,142,248,.12); color: var(--accent);   border: 1px solid rgba(27,142,248,.3); }
.badge--category { background: rgba(0,30,80,.07);    color: var(--primary);  border: 1px solid rgba(0,30,80,.15); }

.product-title {
  font-size: clamp(1.5rem, 4vw, 2.1rem); font-weight: 800;
  color: var(--text); margin-bottom: 1rem; line-height: 1.2;
}
.product-desc {
  color: var(--text-muted); line-height: 1.8; font-size: .95rem;
  margin-bottom: 1.75rem; padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

/* Price block */
.product-price-block {
  background: var(--light); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 1.1rem 1.4rem;
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.25rem;
}
.product-price-label { font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .07em; }
.product-price-val   { font-size: 1.1rem; font-weight: 800; color: var(--primary); }
.product-price-old   { font-size: .9rem; font-weight: 500; color: var(--text-muted); text-decoration: line-through; margin-left: .5rem; }
.price-sale          { font-size: 1.1rem; font-weight: 800; color: #C53030; }
.price-regular       { font-size: 1.1rem; font-weight: 800; color: var(--primary); }
.price-regular-old   { font-size: .78rem; font-weight: 500; color: var(--text-muted); text-decoration: line-through; margin-left: .3rem; }
.price-contact       { font-size: .9rem; font-weight: 600; color: var(--text-muted); }
.price-badge         { display: inline-block; background: #FEF2F2; color: #C53030; border: 1px solid #FCA5A5;
                       padding: .1rem .4rem; border-radius: 100px; font-size: .7rem; font-weight: 700;
                       margin-left: .4rem; vertical-align: middle; }

/* Action buttons */
.product-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.product-actions .btn { flex: 1; min-width: 120px; justify-content: center; }
.btn--whatsapp       { background: #25D366; color: var(--white); }
.btn--whatsapp:hover { background: #1BAB52; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,211,102,.35); }
.btn--viber          { background: #7360F2; color: var(--white); }
.btn--viber:hover    { background: #5B4BD4; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(115,96,242,.35); }

.product-back {
  display: inline-flex; align-items: center; gap: .4rem;
  color: var(--text-muted); font-size: .9rem; transition: var(--transition);
}
.product-back:hover { color: var(--accent); }

/* Specs table */
.specs-section { padding: 3rem 0; background: var(--light); }
.specs-section .section__title { text-align: left; margin-bottom: 1.5rem; font-size: 1.4rem; }

.specs-table {
  width: 100%; border-collapse: collapse;
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
}
.specs-table tr          { border-bottom: 1px solid var(--border); }
.specs-table tr:last-child { border-bottom: none; }
.specs-table th {
  width: 35%; padding: .9rem 1.25rem;
  font-size: .82rem; font-weight: 600; color: var(--text-muted);
  text-align: left; background: var(--light);
  text-transform: uppercase; letter-spacing: .06em;
}
.specs-table td { padding: .9rem 1.25rem; font-size: .95rem; color: var(--text); font-weight: 500; }

/* Related parts */
.related-section { padding: 4rem 0; }
.related-section .section__title { text-align: left; margin-bottom: 1.5rem; font-size: 1.4rem; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

/* Clickable product cards */
.product-card { cursor: pointer; }

/* Mobile filter toggle button (hidden on desktop) */
.filter-toggle {
  display: none; align-items: center; gap: .45rem;
  padding: .5rem 1rem; border: 1.5px solid var(--border);
  border-radius: var(--radius-xs); font-size: .88rem; font-weight: 600;
  color: var(--text); background: var(--white); cursor: pointer;
  transition: var(--transition); white-space: nowrap;
}
.filter-toggle:hover  { border-color: var(--accent); color: var(--accent); }
.filter-toggle.active { background: var(--primary); color: var(--white); border-color: var(--primary); }

/* ═══════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════ */

/* ── 1024px: Tablet landscape ───────────────────── */
@media (max-width: 1024px) {
  .footer__grid           { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer__brand          { grid-column: 1 / -1; }
  .footer__brand p        { max-width: 100%; }
  .catalog-layout         { grid-template-columns: 1fr; }
  .about-grid             { grid-template-columns: 1fr; }
  .contact-grid           { grid-template-columns: 1fr; }
  .product-detail__grid   { grid-template-columns: 1fr; }
  .product-detail__img    { position: static; max-width: 480px; margin: 0 auto; }
}

/* ── 768px: Tablet portrait / large phones ──────── */
@media (max-width: 768px) {
  /* Sections */
  .section    { padding: 3.5rem 0; }
  .cta-banner { padding: 3rem 1rem; }

  /* Nav */
  .nav__menu {
    display: none; flex-direction: column; align-items: flex-start;
    position: absolute; top: 72px; left: 0; right: 0;
    background: var(--primary); padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,.12);
    gap: .25rem; z-index: 998;
  }
  .nav__menu.open { display: flex; }
  .nav__link      { width: 100%; padding: .7rem 1rem; }
  .nav__toggle    { display: flex; }

  /* Hero */
  .hero           { min-height: auto; }
  .hero__content  { padding: 3.5rem 1.5rem 2.5rem; }
  .hero__subtitle { font-size: 1rem; max-width: 100%; }
  .hero__vw-logo  { display: none; }
  .hero__stats    { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 2.5rem; }
  .hero__stat-num { font-size: 1.75rem; }

  /* Page hero */
  .page-hero { padding: 6rem 0 2.5rem; }

  /* Search */
  .search-btn { padding: .65rem 1rem; font-size: .85rem; }

  /* Catalog — sidebar hidden, toggle shown */
  .sidebar           { display: none; width: 100%; }
  .sidebar.open      { display: block; margin-bottom: 1rem; }
  .filter-toggle     { display: flex; }
  .catalog-layout    { padding: 2rem 0; }
  .catalog-toolbar   { flex-wrap: wrap; }

  /* Footer */
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }

  /* Contact */
  .contact-form-wrap { padding: 1.5rem; }
  .form-row          { grid-template-columns: 1fr; }

  /* Product detail */
  .product-detail          { padding: 2.5rem 0; }
  .product-detail__icon    { font-size: 5rem; }
  .product-price-block     { flex-direction: column; align-items: flex-start; gap: .35rem; }
  .specs-section           { padding: 2rem 0; }
  .related-section         { padding: 2.5rem 0; }
}

/* ── 640px: Medium phones ───────────────────────── */
@media (max-width: 640px) {
  .section        { padding: 3rem 0; }
  .footer__grid   { grid-template-columns: 1fr; gap: 1.5rem; }
  .social-links   { flex-wrap: wrap; }
  .hero__badge    { font-size: .78rem; padding: .3rem .75rem; }
  .page-hero h1   { font-size: clamp(1.6rem, 6vw, 2.5rem); }
  .cta-banner h2  { font-size: clamp(1.4rem, 5vw, 2rem); }
  .cta-banner p   { font-size: 1rem; }
}

/* ── 480px: Small phones ────────────────────────── */
@media (max-width: 480px) {
  .section    { padding: 2.5rem 0; }
  .container  { padding: 0 1rem; }

  /* Grids — 2 columns */
  .models__grid     { grid-template-columns: repeat(2, 1fr); gap: .75rem; }
  .categories__grid { grid-template-columns: repeat(2, 1fr); gap: .75rem; }
  .why-us__grid     { grid-template-columns: 1fr; }
  .products-grid    { grid-template-columns: repeat(2, 1fr); gap: .85rem; }
  .related-grid     { grid-template-columns: repeat(2, 1fr); gap: .85rem; }

  /* Hero */
  .hero__content     { padding: 2.5rem 1rem 2rem; }
  .hero__actions     { flex-direction: column; }
  .hero__actions .btn { justify-content: center; width: 100%; }
  .hero__stat-num    { font-size: 1.5rem; }
  .hero__stat-label  { font-size: .72rem; }

  /* Product cards — tighter for 2-col layout */
  .product-card__img          { height: 120px; font-size: 2.75rem; }
  .product-card__body         { padding: .75rem; gap: .3rem; }
  .product-card__name         { font-size: .85rem; }
  .product-card__part         { font-size: .72rem; }
  .product-card__footer       { padding: .65rem .75rem; gap: .4rem; }
  .product-card__price        { font-size: .78rem; }
  .product-card__btn          { padding: .38rem .6rem; font-size: .75rem; }

  /* Model / category cards */
  .model-card       { padding: 1.1rem .75rem; }
  .model-card__icon { font-size: 2rem; }
  .model-card__name { font-size: .88rem; }
  .model-card__years{ font-size: .72rem; }
  .cat-card         { padding: 1.25rem .75rem; }
  .cat-card__icon   { font-size: 1.75rem; }
  .cat-card h3      { font-size: .82rem; }

  /* Feature cards */
  .feature-card     { padding: 1.5rem 1.25rem; }

  /* Product detail */
  .product-detail__icon   { font-size: 4.5rem; }
  .product-actions        { flex-direction: column; }
  .product-actions .btn   { min-width: unset; width: 100%; }

  /* Specs */
  .specs-table th { padding: .7rem .85rem; font-size: .76rem; }
  .specs-table td { padding: .7rem .85rem; font-size: .88rem; }

  /* Catalog toolbar */
  .catalog-toolbar  { gap: .75rem; }
  .catalog-count    { font-size: .85rem; }

  /* Contact */
  .contact-form-wrap { padding: 1.25rem; }
  .contact-info-card { padding: 1.1rem; }

  /* Search */
  .search-box   { padding: .4rem .4rem .4rem 1rem; }
  .search-btn   { padding: .6rem .85rem; font-size: .82rem; }
}

/* ── 360px: Very small phones ───────────────────── */
@media (max-width: 360px) {
  .container { padding: 0 .75rem; }

  /* Single column product grid on very small screens */
  .products-grid { grid-template-columns: 1fr; }
  .related-grid  { grid-template-columns: 1fr; }

  /* Keep models/categories at 2 col but tighten */
  .models__grid     { gap: .5rem; }
  .categories__grid { gap: .5rem; }

  /* Nav logo — hide subtitle text on tiny screens */
  .logo-sub { display: none; }

  /* Hero stats stay 2x2 but smaller */
  .hero__stats    { gap: 1rem; }
  .hero__stat-num { font-size: 1.35rem; }

  /* WhatsApp float — smaller on tiny screens */
  .whatsapp-float { width: 50px; height: 50px; bottom: 1.25rem; right: 1.25rem; }
  .whatsapp-float svg { width: 24px; height: 24px; }
}