/* VoltHub — deep navy + amber theme, built from scratch 2026-07-18 */
:root {
  --bg: #0b1220;
  --bg-soft: #101a2e;
  --card: #141f36;
  --card-edge: #223252;
  --text: #e8edf7;
  --muted: #93a1bd;
  --accent: #ffb428;
  --accent-deep: #e09410;
  --good: #37d67a;
  --bad: #ff6b6b;
  --radius: 14px;
  --font-head: 'Sora', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
h1, h2, h3 { font-family: var(--font-head); }
a { color: var(--accent); text-decoration: none; }
img, svg { display: block; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-edge);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 800; font-size: 1.35rem; color: var(--text); }
.logo em { color: var(--accent); font-style: normal; }
.topnav { display: flex; gap: 26px; }
.topnav a { color: var(--muted); font-weight: 500; transition: color .15s; }
.topnav a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 84px 0 60px;
  background:
    radial-gradient(700px 340px at 85% -10%, rgba(255, 180, 40, 0.14), transparent 60%),
    radial-gradient(600px 300px at 5% 110%, rgba(55, 120, 255, 0.10), transparent 60%);
  border-bottom: 1px solid var(--card-edge);
}
.hero-kicker { color: var(--accent); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; margin-bottom: 14px; }
.hero h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); line-height: 1.12; font-weight: 800; }
.hero h1 span { color: var(--accent); }
.hero-sub { max-width: 560px; color: var(--muted); margin: 18px 0 26px; font-size: 1.08rem; }
.hero-sub strong { color: var(--text); }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 10px;
  font-family: var(--font-head); font-weight: 700; font-size: .95rem;
  cursor: pointer; border: none; transition: transform .12s, box-shadow .12s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #1a1205; box-shadow: 0 6px 22px rgba(255, 180, 40, .28); }
.btn-primary:hover { background: #ffc14f; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--card-edge); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats { display: flex; gap: 34px; margin-top: 44px; flex-wrap: wrap; }
.hero-stat b { display: block; font-family: var(--font-head); font-size: 1.7rem; color: var(--accent); }
.hero-stat span { color: var(--muted); font-size: .88rem; }

/* Toolbar */
#catalog { padding-top: 48px; }
.toolbar { display: flex; gap: 14px; flex-wrap: wrap; }
.searchbox {
  flex: 1 1 320px; display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--card-edge); border-radius: 10px; padding: 0 14px;
  color: var(--muted);
}
.searchbox:focus-within { border-color: var(--accent); }
.searchbox input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text); font-family: var(--font-body); font-size: 1rem; padding: 13px 0;
}
#sort {
  background: var(--card); border: 1px solid var(--card-edge); color: var(--text);
  border-radius: 10px; padding: 0 14px; font-family: var(--font-body); font-size: .95rem; cursor: pointer;
}

/* Brand chips */
.brand-chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 8px; }
.chip {
  background: var(--card); border: 1px solid var(--card-edge); color: var(--muted);
  border-radius: 999px; padding: 7px 16px; font-size: .88rem; font-weight: 500;
  cursor: pointer; transition: all .13s; font-family: var(--font-body);
}
.chip:hover { color: var(--text); border-color: var(--muted); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #1a1205; font-weight: 700; }
.chip small { opacity: .65; margin-left: 5px; }

.result-line { color: var(--muted); font-size: .9rem; margin: 14px 0 18px; }

/* Grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.card {
  background: var(--card); border: 1px solid var(--card-edge); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; transition: transform .15s, border-color .15s, box-shadow .15s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 14px 34px rgba(0, 0, 0, .45); }
.card-img { background: #fff; aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.card-img svg { width: 100%; height: 100%; }
.card-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.card-name {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card-brand { font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.card-name { font-family: var(--font-head); font-weight: 600; font-size: .98rem; line-height: 1.35; }
.card-specs { color: var(--muted); font-size: .84rem; }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 10px; }
.card-price { font-family: var(--font-head); font-weight: 800; font-size: 1.15rem; color: var(--accent); }
.stock { font-size: .78rem; font-weight: 600; }
.stock.in { color: var(--good); }
.stock.out { color: var(--bad); }

.load-wrap { text-align: center; padding: 34px 0 60px; }

/* About */
.about { background: var(--bg-soft); border-top: 1px solid var(--card-edge); border-bottom: 1px solid var(--card-edge); padding: 64px 0; }
.about h2 { font-size: 1.9rem; margin-bottom: 16px; }
.about p { color: var(--muted); max-width: 560px; margin-bottom: 14px; }
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; }
.about-points { list-style: none; display: flex; flex-direction: column; gap: 18px; }
.about-points li { background: var(--card); border: 1px solid var(--card-edge); border-radius: 12px; padding: 16px 18px; }
.about-points strong { display: block; font-family: var(--font-head); margin-bottom: 4px; }
.about-points span { color: var(--muted); font-size: .92rem; }

/* Footer */
.footer { padding: 54px 0 30px; }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer h3 { font-size: 1rem; margin-bottom: 8px; }
.footer p { color: var(--muted); font-size: .93rem; }
.footer-logo { font-size: 1.3rem; margin-bottom: 6px; }
.footer-note { margin-top: 40px; color: #5c6a86; font-size: .8rem; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(5, 9, 18, .78); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--card); border: 1px solid var(--card-edge); border-radius: 18px;
  max-width: 760px; width: 100%; max-height: 88vh; overflow-y: auto; position: relative;
  padding: 26px;
}
.modal-close {
  position: absolute; top: 14px; right: 16px; z-index: 2;
  background: var(--bg-soft); border: 1px solid var(--card-edge); color: var(--text);
  width: 36px; height: 36px; border-radius: 50%; font-size: 1.3rem; cursor: pointer;
}
.modal-close:hover { border-color: var(--accent); color: var(--accent); }
.modal-grid { display: grid; grid-template-columns: 300px 1fr; gap: 24px; }
.modal-img { background: #fff; border-radius: 12px; overflow: hidden; align-self: start; display: flex; align-items: center; justify-content: center; min-height: 220px; }
.modal-img svg { width: 100%; height: auto; }
.modal-img img { max-width: 100%; height: auto; object-fit: contain; }
.modal-desc { color: var(--muted); font-size: .92rem; margin-top: 12px; }
.store-terms { color: var(--muted); font-size: .84rem; margin-bottom: 14px; }
.modal h2 { font-size: 1.35rem; line-height: 1.3; margin: 4px 0 2px; }
.modal .card-brand { font-size: .8rem; }
.modal-price-row { display: flex; align-items: baseline; gap: 14px; margin: 10px 0 4px; }
.modal-price { font-family: var(--font-head); font-size: 1.9rem; font-weight: 800; color: var(--accent); }
.rating { color: var(--accent); font-size: .92rem; }
.rating span { color: var(--muted); }
.spec-table { width: 100%; border-collapse: collapse; margin: 16px 0 18px; font-size: .92rem; }
.spec-table td { padding: 8px 4px; border-bottom: 1px solid var(--card-edge); }
.spec-table td:first-child { color: var(--muted); width: 46%; }
.modal-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-wa { background: #25d366; color: #06281a; }
.btn-wa:hover { background: #3fe07d; }

@media (max-width: 860px) {
  .about-grid, .modal-grid { grid-template-columns: 1fr; }
  .modal-img { max-width: 320px; margin: 0 auto; width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .topnav { display: none; }
}