/* Slimline Leather Band — minimalist premium DTC, mobile-first */
:root {
  --ink: #1a1714;
  --ink-soft: #57504a;
  --paper: #faf8f5;
  --card: #ffffff;
  --accent: #8a5a2b;
  --accent-dark: #6f4620;
  --line: #e7e1d8;
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Avenir Next", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; line-height: 1.15; }
h1 { font-size: clamp(2rem, 5.5vw, 3.2rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); margin-bottom: 1.2rem; }
h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  padding: 0.95rem 2rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s, transform 0.15s;
}
.btn:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-small { padding: 0.5rem 1.2rem; font-size: 0.9rem; }
.btn-big { padding: 1.1rem 2.6rem; font-size: 1.1rem; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.logo { font-weight: 700; letter-spacing: 0.14em; font-size: 0.95rem; }
.logo em { color: var(--accent); font-style: normal; }

/* Hero */
.hero { padding: 3rem 0 2rem; }
.hero-grid { display: grid; gap: 2rem; align-items: center; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.75rem;
  color: var(--accent); font-weight: 700; margin-bottom: 0.8rem;
}
.sub { color: var(--ink-soft); font-size: 1.1rem; margin: 1rem 0 1.6rem; max-width: 34em; }
.hero-cta { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.cta-note { color: var(--ink-soft); font-size: 0.9rem; }
.hero-points { list-style: none; margin-top: 1.6rem; display: grid; gap: 0.35rem; }
.hero-points li { padding-left: 1.4rem; position: relative; color: var(--ink-soft); font-size: 0.95rem; }
.hero-points li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.hero-img img { border-radius: var(--radius); box-shadow: 0 20px 60px rgba(26, 23, 20, 0.10); }

/* Gallery */
.gallery { padding: 2.5rem 0; }
#gallery-main {
  border-radius: var(--radius); width: 100%;
  box-shadow: 0 10px 40px rgba(26, 23, 20, 0.08);
  background: #fff;
}
.thumbs { display: flex; gap: 10px; margin-top: 12px; overflow-x: auto; padding-bottom: 4px; }
.thumb {
  flex: 0 0 72px; height: 72px; border-radius: 10px; overflow: hidden;
  border: 2px solid transparent; cursor: pointer; background: #fff; padding: 0;
  opacity: 0.75; transition: opacity 0.15s, border-color 0.15s;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb.is-active, .thumb:hover { border-color: var(--accent); opacity: 1; }

/* Benefits */
.benefits { padding: 3.5rem 0; background: var(--card); border-block: 1px solid var(--line); }
.benefit-grid { display: grid; gap: 1.8rem; }
.benefit p { color: var(--ink-soft); font-size: 0.98rem; }

/* Specs */
.specs { padding: 3.5rem 0; }
.specs table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 20px rgba(26,23,20,0.05); }
.specs th, .specs td { text-align: left; padding: 0.85rem 1.1rem; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
.specs tr:last-child th, .specs tr:last-child td { border-bottom: none; }
.specs th { width: 34%; color: var(--ink-soft); font-weight: 600; vertical-align: top; }

/* FAQ */
.faq { padding: 3.5rem 0; background: var(--card); border-block: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 0.9rem 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; position: relative; padding-right: 2rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 0; color: var(--accent); font-size: 1.2rem; transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-soft); padding-top: 0.6rem; max-width: 60em; }

/* Buy */
.buy { padding: 3.5rem 0 4.5rem; }
.buy-inner { display: grid; gap: 2rem; align-items: center; }
.buy-inner img { border-radius: var(--radius); box-shadow: 0 10px 40px rgba(26,23,20,0.08); }
.price { font-size: 2rem; font-weight: 700; margin: 0.4rem 0 0.8rem; }
.price-note { font-size: 0.95rem; font-weight: 400; color: var(--ink-soft); }
.buy p { color: var(--ink-soft); margin-bottom: 1.2rem; }
.guarantee { font-size: 0.85rem; margin-top: 0.8rem; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 2rem 0 6rem; color: var(--ink-soft); font-size: 0.85rem; }

/* Sticky mobile buy bar */
.sticky-buy {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
  padding: 0.7rem 1rem calc(0.7rem + env(safe-area-inset-bottom));
  transform: translateY(110%); transition: transform 0.25s ease;
}
.sticky-buy.is-visible { transform: translateY(0); }
.sticky-buy strong { display: block; font-size: 0.92rem; }
.sticky-buy span { font-size: 0.82rem; color: var(--ink-soft); }
.sticky-buy .btn { padding: 0.7rem 1.5rem; white-space: nowrap; }

/* Desktop */
@media (min-width: 760px) {
  .hero { padding: 4.5rem 0 3rem; }
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 3.5rem; }
  .benefit-grid { grid-template-columns: 1fr 1fr; gap: 2.4rem 3rem; }
  .buy-inner { grid-template-columns: 0.9fr 1.1fr; gap: 3.5rem; }
  footer { padding-bottom: 2rem; }
}