:root {
  --bg: #0a0a0b;
  --bg-elev: #14141a;
  --bg-hi: #1c1c24;
  --border: #24242c;
  --border-hi: #33333d;
  --text: #e8e8ec;
  --text-dim: #a0a0ab;
  --text-mute: #6b6b76;
  --accent: #5eead4;
  --accent-hi: #86efd8;
  --danger: #ef4444;
  --success: #22c55e;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --radius: 6px;
  --radius-lg: 12px;
  --shadow-lg: 0 24px 60px -12px rgba(0,0,0,.6), 0 8px 20px -8px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }

/* -------- Layout -------- */
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 780px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .container, .container-sm { padding: 0 16px; } }

.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 780px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* -------- Nav -------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,10,11,.85);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 32px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 18px; letter-spacing: -.01em;
  color: var(--text);
}
.brand-mark {
  width: 26px; height: 26px; border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), #38bdf8);
  display: grid; place-items: center;
  font-size: 14px; color: #0a0a0b; font-weight: 800;
}
.nav-links { display: flex; gap: 24px; }
.nav-links a { font-size: 14px; color: var(--text-dim); }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.cart-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text); font-size: 13px; font-weight: 500;
  transition: all .15s;
}
.cart-btn:hover { border-color: var(--accent); color: var(--accent); }
.cart-count {
  background: var(--accent); color: #0a0a0b;
  border-radius: 999px; padding: 1px 7px;
  font-size: 11px; font-weight: 700; min-width: 18px; text-align: center;
}
@media (max-width: 780px) { .nav-links { display: none; } }

/* -------- Buttons -------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px;
  font-weight: 600; font-size: 14px; letter-spacing: -.005em;
  border-radius: var(--radius); border: 1px solid transparent;
  transition: all .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #0a0a0b; }
.btn-primary:hover { background: var(--accent-hi); color: #0a0a0b; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-hi); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 16px 28px; font-size: 15px; }
.btn-block { width: 100%; }

/* -------- Hero -------- */
.hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(1000px 500px at 80% -10%, rgba(94,234,212,.10), transparent 60%),
    radial-gradient(700px 400px at 10% 110%, rgba(56,189,248,.06), transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; display: grid; gap: 24px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px; color: var(--text-dim);
  width: fit-content;
}
.eyebrow-dot {
  width: 6px; height: 6px; border-radius: 999px; background: var(--success);
  box-shadow: 0 0 8px var(--success);
}
h1, h2, h3 { font-weight: 700; letter-spacing: -.02em; line-height: 1.1; margin: 0; }
.h1 { font-size: clamp(38px, 6vw, 68px); }
.h2 { font-size: clamp(28px, 3.5vw, 40px); }
.h3 { font-size: 20px; }
.lede {
  font-size: 18px; color: var(--text-dim); max-width: 640px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 40px; margin-top: 24px;
  padding-top: 24px; border-top: 1px solid var(--border);
}
.stat-num { font-family: var(--font-mono); font-size: 24px; font-weight: 600; color: var(--text); }
.stat-label { font-size: 12px; color: var(--text-mute); text-transform: uppercase; letter-spacing: .05em; }
@media (max-width: 640px) { .hero-stats { gap: 24px; flex-wrap: wrap; } }

/* -------- Brand row -------- */
.brand-row {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.brand-row-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px; flex-wrap: wrap;
}
.brand-row-label {
  font-size: 12px; color: var(--text-mute);
  text-transform: uppercase; letter-spacing: .1em;
}
.brand-row-list {
  display: flex; gap: 40px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 13px; color: var(--text-dim);
}
.brand-row-list span { display: inline-flex; align-items: center; gap: 6px; }

/* -------- Section -------- */
section { padding: 72px 0; }
.section-head {
  display: flex; align-items: end; justify-content: space-between;
  margin-bottom: 40px; gap: 24px; flex-wrap: wrap;
}
.section-title { font-size: 32px; }
.section-sub { color: var(--text-dim); margin-top: 8px; font-size: 15px; }

/* -------- Card / product -------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .2s ease;
  position: relative;
  display: flex; flex-direction: column;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hi);
  box-shadow: var(--shadow-lg);
}
.card-media {
  aspect-ratio: 4 / 3;
  background: linear-gradient(180deg, #16161d 0%, #0e0e13 100%);
  display: grid; place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.card-media img {
  max-height: 82%; max-width: 82%;
  object-fit: contain;
  transition: transform .3s ease;
  filter: drop-shadow(0 12px 24px rgba(0,0,0,.45));
}
.card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-brand {
  font-size: 11px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-mute); font-weight: 600;
}
.card-title { font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.card-tag { color: var(--text-dim); font-size: 13px; min-height: 40px; }
.card-price-row {
  margin-top: auto;
  display: flex; align-items: baseline; justify-content: space-between;
  padding-top: 12px;
}
.card-price { font-family: var(--font-mono); font-size: 20px; font-weight: 700; color: var(--text); }
.card-was { font-family: var(--font-mono); font-size: 13px; color: var(--text-mute); text-decoration: line-through; margin-left: 8px; }
.card-arrow { color: var(--accent); font-size: 18px; }

/* -------- Product page -------- */
.pdp {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  padding: 40px 0 24px;
}
@media (max-width: 900px) { .pdp { grid-template-columns: 1fr; gap: 32px; } }
.pdp-gallery {
  position: sticky; top: 88px;
  align-self: start;
  background: linear-gradient(180deg, #16161d, #0e0e13);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  display: grid; place-items: center;
}
.pdp-gallery img {
  max-width: 78%; max-height: 78%; object-fit: contain;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,.6));
}
.pdp-info h1 { font-size: 40px; margin-bottom: 8px; letter-spacing: -.02em; }
.pdp-info .brand-line {
  font-size: 12px; color: var(--text-mute);
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: 8px;
}
.pdp-info .tagline { font-size: 17px; color: var(--text-dim); margin-bottom: 24px; }
.price-block {
  display: flex; align-items: baseline; gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.price-main { font-family: var(--font-mono); font-size: 34px; font-weight: 700; }
.price-was { font-family: var(--font-mono); font-size: 16px; color: var(--text-mute); text-decoration: line-through; }
.badge-save {
  background: rgba(94,234,212,.12); color: var(--accent);
  padding: 4px 10px; border-radius: 4px; font-size: 12px; font-weight: 600;
  border: 1px solid rgba(94,234,212,.3);
}
.highlights ul {
  list-style: none; padding: 0; margin: 0; display: grid; gap: 12px;
}
.highlights li {
  display: flex; align-items: start; gap: 12px;
  color: var(--text);
}
.highlights li::before {
  content: "✓"; color: var(--accent); font-weight: 700; margin-top: 1px;
}
.pdp-actions { display: flex; gap: 12px; margin: 28px 0; }
.qty {
  display: flex; align-items: center;
  border: 1px solid var(--border-hi); border-radius: var(--radius);
  background: var(--bg-elev);
}
.qty button { padding: 12px 14px; background: none; border: none; color: var(--text); font-size: 16px; }
.qty span { font-family: var(--font-mono); min-width: 36px; text-align: center; }
.specs-table {
  width: 100%; border-collapse: collapse; margin-top: 32px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden;
}
.specs-table th, .specs-table td {
  padding: 14px 20px; text-align: left; font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.specs-table th { color: var(--text-mute); font-weight: 500; width: 40%; }
.specs-table td { color: var(--text); font-family: var(--font-mono); font-size: 13px; }
.specs-table tr:last-child th, .specs-table tr:last-child td { border-bottom: none; }

/* -------- Value props -------- */
.value {
  padding: 28px; background: var(--bg-elev);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.value-icon {
  width: 40px; height: 40px; border-radius: 8px;
  display: grid; place-items: center;
  background: rgba(94,234,212,.12); color: var(--accent);
  margin-bottom: 16px; font-size: 20px;
}
.value h3 { font-size: 17px; margin-bottom: 8px; }
.value p { color: var(--text-dim); font-size: 14px; margin: 0; }

/* -------- Filters -------- */
.catalog {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  padding: 40px 0;
}
@media (max-width: 900px) { .catalog { grid-template-columns: 1fr; } }
.filters {
  position: sticky; top: 88px; align-self: start;
  padding: 24px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.filters h4 {
  font-size: 12px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-mute); margin: 0 0 14px;
}
.filter-group { margin-bottom: 24px; }
.filter-group:last-child { margin-bottom: 0; }
.filter-item {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0; font-size: 14px; cursor: pointer;
  color: var(--text-dim);
}
.filter-item input { accent-color: var(--accent); }
.filter-item:hover { color: var(--text); }

/* -------- Cart -------- */
.cart-wrap { padding: 40px 0 80px; }
.cart-grid {
  display: grid; grid-template-columns: 2fr 1fr; gap: 40px;
}
@media (max-width: 900px) { .cart-grid { grid-template-columns: 1fr; } }
.cart-list {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cart-item {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 20px;
  padding: 20px;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.cart-item:last-child { border-bottom: none; }
.cart-item-img {
  width: 96px; height: 96px;
  background: linear-gradient(180deg, #16161d, #0e0e13);
  border-radius: 8px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
}
.cart-item-img img { max-width: 80%; max-height: 80%; }
.cart-item-body h4 { margin: 0 0 4px; font-size: 15px; }
.cart-item-body .brand-line { font-size: 11px; color: var(--text-mute); text-transform: uppercase; letter-spacing: .1em; }
.cart-item-price { font-family: var(--font-mono); font-weight: 700; }
.cart-item .qty { margin-top: 8px; }
.cart-summary {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  align-self: start;
}
.summary-line {
  display: flex; justify-content: space-between; padding: 8px 0;
  font-size: 14px; color: var(--text-dim);
}
.summary-line.total {
  border-top: 1px solid var(--border);
  margin-top: 8px; padding-top: 16px;
  font-size: 18px; font-weight: 700; color: var(--text);
}
.summary-line .val { font-family: var(--font-mono); color: var(--text); }

.empty {
  padding: 80px 24px; text-align: center; color: var(--text-dim);
}
.empty .btn { margin-top: 24px; }

/* -------- Checkout -------- */
.checkout-grid {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px;
  padding: 40px 0 80px;
}
@media (max-width: 900px) { .checkout-grid { grid-template-columns: 1fr; } }
.form-row { display: grid; gap: 16px; }
.form-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .form-2 { grid-template-columns: 1fr; } }
label {
  font-size: 12px; color: var(--text-mute); text-transform: uppercase; letter-spacing: .05em;
  display: block; margin-bottom: 6px;
}
input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  font: inherit; font-size: 14px;
  transition: border-color .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
}
.form-group { margin-bottom: 20px; }
.form-block-title {
  font-size: 12px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-mute); margin: 32px 0 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* -------- FAQ / Trust -------- */
.faq details {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq summary {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq summary::after { content: "+"; color: var(--accent); font-size: 20px; }
.faq details[open] summary::after { content: "−"; }
.faq details p {
  padding: 0 24px 20px;
  color: var(--text-dim);
  margin: 0;
}

/* -------- Footer -------- */
footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
  color: var(--text-mute);
  font-size: 13px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h5 {
  font-size: 12px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-dim); margin: 0 0 16px;
}
.footer-col a { display: block; padding: 4px 0; color: var(--text-mute); }
.footer-col a:hover { color: var(--accent); }
.footer-legal {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.footer-mono { font-family: var(--font-mono); font-size: 12px; }

/* -------- Toast / Utility -------- */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  padding: 14px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--text);
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(20px);
  transition: all .25s;
  z-index: 100;
  font-size: 14px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.center { text-align: center; }
.mono { font-family: var(--font-mono); }
.dim { color: var(--text-dim); }