/* ============================================================
   VOLT — gadgets & gear  (site4 shopping-cart test site)
   Plain CSS, shared across catalog / product / cart pages.
   Light commerce theme, distinct from sites 1-3.
   ============================================================ */
:root {
  --ink: #14151a;
  --muted: #6a6f7e;
  --line: #e7e8ee;
  --bg: #f7f8fb;
  --card: #ffffff;
  --accent: #4f46e5;       /* electric indigo */
  --accent-ink: #ffffff;
  --accent-soft: #eef0ff;
  --ok: #0ea972;
  --warn: #e2562f;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(20, 21, 26, .06);
  --maxw: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- top bar ---------- */
.bar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.bar__inner { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.18rem; letter-spacing: -.01em; }
.brand__mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: grid; place-items: center; color: #fff; font-size: 1rem;
}
.bar nav { display: flex; gap: 20px; margin-left: 10px; }
.bar nav a { color: var(--muted); font-weight: 600; font-size: .95rem; }
.bar nav a:hover, .bar nav a.is-active { color: var(--ink); }
.bar__spacer { flex: 1; }
.cart-link {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-soft); color: var(--accent);
  padding: 9px 15px; border-radius: 999px; font-weight: 700; font-size: .92rem;
}
.cart-link .count {
  min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px;
  background: var(--accent); color: #fff; font-size: .75rem;
  display: inline-grid; place-items: center;
}

/* ---------- hero ---------- */
.hero { padding: 64px 0 30px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -.025em; line-height: 1.08; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--muted); font-size: 1.12rem; margin-top: 14px; max-width: 560px; }

/* ---------- section ---------- */
.section { padding: 30px 0 60px; }
.section__head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; }
.section__head h2 { font-size: 1.45rem; letter-spacing: -.01em; }
.section__head a { color: var(--accent); font-weight: 700; font-size: .92rem; }

/* ---------- product grid ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 880px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }

.product-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d8daee; }
.product-card__art { height: 170px; display: grid; place-items: center; font-size: 3.4rem; }
.product-card__body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card__cat { font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.product-card__name { font-size: 1.06rem; font-weight: 700; }
.product-card__desc { color: var(--muted); font-size: .9rem; flex: 1; }
.product-card__row { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.price { font-weight: 800; font-size: 1.12rem; }
.price s { color: var(--muted); font-weight: 500; font-size: .85rem; margin-right: 6px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; font-size: .94rem; border: 1px solid transparent;
  padding: 11px 18px; border-radius: 11px; cursor: pointer; transition: filter .15s ease, background .15s ease;
}
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { filter: brightness(1.08); }
.btn--ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: #c9ccde; }
.btn--block { width: 100%; }
.btn--sm { padding: 8px 13px; font-size: .86rem; border-radius: 9px; }

/* ---------- product detail ---------- */
.crumbs { color: var(--muted); font-size: .88rem; padding: 22px 0 0; }
.crumbs a:hover { color: var(--accent); }
.detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; padding: 26px 0 50px; align-items: start; }
@media (max-width: 820px) { .detail { grid-template-columns: 1fr; gap: 26px; } }
.detail__art { border-radius: 20px; height: 360px; display: grid; place-items: center; font-size: 7rem; }
.detail__cat { font-size: .74rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.detail h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); letter-spacing: -.02em; margin: 8px 0 10px; }
.detail__price { font-size: 1.7rem; font-weight: 800; margin: 6px 0 16px; }
.detail__lead { color: var(--muted); font-size: 1.04rem; margin-bottom: 20px; }
.detail__actions { display: flex; gap: 12px; margin-bottom: 26px; }
.specs { border-top: 1px solid var(--line); }
.specs__row { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: .94rem; }
.specs__row span:first-child { color: var(--muted); }
.specs__row span:last-child { font-weight: 600; }

/* art tints (per product, set via class) */
.tint-a { background: linear-gradient(135deg, #eef0ff, #dfe3ff); }
.tint-b { background: linear-gradient(135deg, #e7f8f1, #cdEFe0); }
.tint-c { background: linear-gradient(135deg, #fff1e9, #ffd9c6); }
.tint-d { background: linear-gradient(135deg, #fdeef7, #f7d6ec); }
.tint-e { background: linear-gradient(135deg, #eaf3ff, #cfe2ff); }
.tint-f { background: linear-gradient(135deg, #f1eefe, #ddd4fb); }

/* ---------- cart ---------- */
.cart { padding: 30px 0 60px; }
.cart h1 { font-size: 1.9rem; letter-spacing: -.02em; margin-bottom: 22px; }
.cart__grid { display: grid; grid-template-columns: 1fr 320px; gap: 30px; align-items: start; }
@media (max-width: 820px) { .cart__grid { grid-template-columns: 1fr; } }
.cart__items { display: flex; flex-direction: column; gap: 12px; }
.cart-row {
  display: flex; align-items: center; gap: 14px; background: var(--card);
  border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px;
}
.cart-row__art { width: 56px; height: 56px; border-radius: 10px; display: grid; place-items: center; font-size: 1.7rem; flex: none; }
.cart-row__main { flex: 1; min-width: 0; }
.cart-row__name { font-weight: 700; }
.cart-row__cat { color: var(--muted); font-size: .82rem; }
.cart-row__qty { display: flex; align-items: center; gap: 8px; }
.qtybtn { width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 1rem; }
.cart-row__price { font-weight: 800; min-width: 70px; text-align: right; }
.cart-row__rm { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 1.1rem; }
.cart-row__rm:hover { color: var(--warn); }
.summary { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; position: sticky; top: 84px; }
.summary h3 { font-size: 1.1rem; margin-bottom: 14px; }
.summary__row { display: flex; justify-content: space-between; padding: 7px 0; color: var(--muted); font-size: .95rem; }
.summary__row--total { color: var(--ink); font-weight: 800; font-size: 1.2rem; border-top: 1px solid var(--line); margin-top: 8px; padding-top: 14px; }
.cart-empty { color: var(--muted); padding: 30px 0; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 30px 0; color: var(--muted); font-size: .9rem; }
.foot__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.foot a { color: var(--muted); margin-left: 16px; }
.foot a:hover { color: var(--ink); }

.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff; padding: 12px 20px; border-radius: 12px;
  font-weight: 600; font-size: .92rem; opacity: 0; pointer-events: none;
  transition: opacity .2s ease, transform .2s ease; z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }