:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1b1f27;
  --muted: #667085;
  --border: #e3e6eb;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --dark: #12161d;
  --dark-2: #1c222c;
  --ok: #16a34a;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(16, 24, 40, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.accent { color: var(--accent); }

/* Header */
.header {
  position: sticky; top: 0; z-index: 20;
  background: var(--dark); color: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}
.header__inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 1.3rem; }
.logo__mark { color: var(--accent); font-size: 1.6rem; }
.logo__text b { color: var(--accent); }
.nav { display: flex; gap: 22px; margin-left: 12px; }
.nav a { color: #cfd5df; font-weight: 500; transition: color .2s; }
.nav a:hover { color: var(--accent); }
.header__actions { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.header__phone { font-weight: 600; white-space: nowrap; }
.cart-btn, .burger {
  background: var(--dark-2); color: #fff; border: 1px solid #2c3442;
  border-radius: 10px; padding: 8px 12px; cursor: pointer; font-size: 1rem;
}
.cart-btn__count {
  display: inline-block; min-width: 22px; padding: 0 6px; margin-left: 4px;
  background: var(--accent); color: var(--dark); border-radius: 11px; font-weight: 700; font-size: .85rem;
}
.burger { display: none; }

/* Hero */
.hero {
  background: radial-gradient(1200px 400px at 80% 0%, #2a3240 0%, var(--dark) 60%);
  color: #fff; padding: 64px 0 72px; overflow: hidden;
}
.hero__inner { display: grid; grid-template-columns: 1.4fr 1fr; align-items: center; gap: 32px; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
.hero p { color: #c3cad6; font-size: 1.1rem; max-width: 560px; }
.search { display: flex; gap: 8px; margin: 24px 0 16px; max-width: 560px; }
.search input {
  flex: 1; min-width: 0; padding: 14px 16px; border-radius: 10px; border: none; font-size: 1rem;
}
.search button, .btn-primary, .vin__form button {
  background: var(--accent); color: var(--dark); border: none; border-radius: 10px;
  padding: 12px 22px; font-weight: 700; font-size: 1rem; cursor: pointer; transition: background .2s;
}
.search button:hover, .btn-primary:hover, .vin__form button:hover { background: var(--accent-dark); }
.hero__perks { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; color: #e5e9f0; }
.hero__art { position: relative; height: 280px; }
.gear { position: absolute; color: var(--accent); opacity: .9; animation: spin 18s linear infinite; line-height: 1; }
.gear--big { font-size: 240px; right: 40px; top: 0; }
.gear--small { font-size: 120px; right: 0; bottom: -10px; opacity: .5; animation-direction: reverse; animation-duration: 10s; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Sections */
.section { padding: 64px 0; }
.section--alt { background: var(--dark-2); color: #fff; }
.section h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.section__head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; }
.filters select {
  padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); font-size: .95rem;
}

.categories { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.chip {
  border: 1px solid var(--border); background: var(--surface); padding: 8px 14px;
  border-radius: 999px; cursor: pointer; font-size: .95rem; transition: all .15s;
}
.chip:hover { border-color: var(--accent); }
.chip.active { background: var(--dark); color: #fff; border-color: var(--dark); }
.results-info { color: var(--muted); margin: 0 0 16px; }

/* Products */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; flex-direction: column; gap: 8px; transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card__img {
  height: 150px; border-radius: 10px; overflow: hidden;
  background: linear-gradient(135deg, #f1f3f6, #e6e9ee);
}
.card__img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card__brand { color: var(--muted); font-size: .85rem; }
.card__title { font-weight: 600; font-size: 1.02rem; }
.card__meta { font-size: .85rem; color: var(--muted); }
.card__stock { font-size: .85rem; color: var(--ok); }
.card__stock.order { color: var(--accent-dark); }
.card__bottom { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.card__price { font-size: 1.25rem; font-weight: 700; }
.add-btn {
  background: var(--dark); color: #fff; border: none; border-radius: 10px; padding: 9px 14px; cursor: pointer; font-weight: 600;
}
.add-btn:hover { background: var(--accent); color: var(--dark); }
.add-btn.added { background: var(--ok); }
.empty { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 40px 0; }

/* VIN */
.vin { display: grid; grid-template-columns: 1fr 1.2fr; gap: 32px; align-items: center; }
.vin p { color: #c3cad6; }
.vin__form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.vin__form input { padding: 13px 14px; border-radius: 10px; border: 1px solid #2c3442; background: #fff; font-size: 1rem; min-width: 0; }
.vin__form input[name="vin"] { grid-column: 1 / -1; text-transform: uppercase; }
.form-msg { grid-column: 1 / -1; margin: 0; min-height: 1.4em; font-size: .95rem; }
.form-msg.ok { color: #4ade80; }
.form-msg.err { color: #f87171; }

/* Features */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.feature { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.feature span { font-size: 32px; }
.feature h3 { margin-top: 8px; }
.feature p { color: var(--muted); margin: 0; }

/* Footer */
.footer { background: var(--dark); color: #c3cad6; padding: 40px 0 20px; }
.footer__inner { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer h4 { color: #fff; }
.footer p { margin: 4px 0; }
.footer a:hover { color: var(--accent); }
.footer__copy { margin-top: 24px; padding-top: 16px; border-top: 1px solid #2c3442; font-size: .9rem; }

/* Cart drawer */
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 30; }
.cart {
  position: fixed; top: 0; right: 0; height: 100%; width: min(400px, 100%); z-index: 40;
  background: var(--surface); display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform .25s ease; box-shadow: -8px 0 30px rgba(0,0,0,.2);
}
.cart.open { transform: none; }
.cart__head { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.cart__head h3 { margin: 0; }
.cart__close { background: none; border: none; font-size: 1.3rem; cursor: pointer; }
.cart__items { flex: 1; overflow-y: auto; padding: 12px 20px; }
.cart__empty { color: var(--muted); text-align: center; margin-top: 40px; }
.cart-item { display: grid; grid-template-columns: 44px 1fr auto; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); }
.cart-item__icon { font-size: 28px; text-align: center; }
.cart-item__title { font-size: .95rem; font-weight: 600; }
.cart-item__price { font-size: .85rem; color: var(--muted); }
.qty { display: flex; align-items: center; gap: 6px; }
.qty button { width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); cursor: pointer; }
.cart__foot { padding: 16px 20px; border-top: 1px solid var(--border); display: grid; gap: 10px; }
.cart__total { font-size: 1.15rem; }
.cart__foot .form-msg.ok { color: var(--ok); }

/* Mobile */
@media (max-width: 860px) {
  .header__phone { display: none; }
  .burger { display: block; }
  .nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0; margin: 0;
    flex-direction: column; gap: 0; background: var(--dark-2);
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 16px; border-top: 1px solid #2c3442; }
  .hero { padding: 40px 0 48px; }
  .hero__inner, .vin { grid-template-columns: 1fr; }
  .hero__art { display: none; }
  .footer__inner { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .vin__form { grid-template-columns: 1fr; }
  .search button { padding: 12px 14px; }
}