/* Cubio storefront — one small stylesheet, light + dark, no framework. */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #16202c;
  --muted: #5b6b7b;
  --border: #e2e8f0;
  --accent: #0e7c86;
  --accent-ink: #ffffff;
  --shadow: 0 1px 3px rgba(16, 32, 44, .08), 0 8px 24px rgba(16, 32, 44, .06);
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e141b;
    --surface: #161f29;
    --text: #e8eef4;
    --muted: #9fb0c0;
    --border: #263341;
    --accent: #2bb3c0;
    --accent-ink: #06222633;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4), 0 10px 30px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--accent); }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header.site {
  display: flex; align-items: center; gap: 10px;
  padding: 22px 0;
}
.logo { font-weight: 700; font-size: 20px; letter-spacing: -.02em; }
.logo .dot { color: var(--accent); }

.hero { padding: 32px 0 8px; }
.hero h1 { font-size: clamp(28px, 6vw, 44px); line-height: 1.1; letter-spacing: -.03em; margin: 0 0 12px; }
.hero p.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; max-width: 52ch; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  margin: 20px 0;
}

/* Product grid */
.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin: 24px 0;
}
.card.product { display: flex; flex-direction: column; margin: 0; }
.product-img {
  width: 100%; aspect-ratio: 1 / 1; object-fit: contain;
  background: var(--bg); border-radius: 10px; margin-bottom: 14px;
}
.product-name { font-size: 22px; letter-spacing: -.02em; margin: 0 0 8px; }
.product-desc { color: var(--muted); margin: 0 0 14px; }
.card.product .features { margin-bottom: 16px; }
.card.product .buy { margin-top: auto; align-self: flex-start; }
.card.product .price-row { margin-bottom: 16px; }
.section-heading { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 30px 0 2px; }

.price-row { display: flex; align-items: baseline; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.price { font-size: 34px; font-weight: 700; letter-spacing: -.02em; }
.price-note { color: var(--muted); font-size: 14px; }

ul.features { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 10px; }
ul.features li { display: flex; gap: 10px; align-items: flex-start; }
ul.features li::before { content: "✓"; color: var(--accent); font-weight: 700; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--accent-ink);
  border: 0; border-radius: 10px;
  font-size: 17px; font-weight: 600; padding: 14px 24px;
  cursor: pointer; text-decoration: none;
  transition: filter .15s ease, transform .05s ease;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .55; cursor: default; }

.note { font-size: 14px; color: var(--muted); }
.note strong { color: var(--text); }

.code-box {
  font: 600 28px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .06em;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 18px; text-align: center; margin: 16px 0;
  user-select: all;
}
.steps { counter-reset: step; list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 12px; }
.steps li { display: flex; gap: 12px; }
.steps li::before {
  counter-increment: step; content: counter(step);
  flex: 0 0 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink);
  display: grid; place-items: center; font-size: 14px; font-weight: 700;
}
.status { color: var(--muted); font-size: 15px; }
.spinner {
  display: inline-block; width: 14px; height: 14px; margin-right: 8px;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

footer.site { color: var(--muted); font-size: 13px; padding: 40px 0; border-top: 1px solid var(--border); margin-top: 40px; }
footer.site a { color: var(--muted); }