/* ============================================================
   LAB GROWN LUXE — classic minimal luxury
   Palette: warm ivory / antique gold / charcoal
   ============================================================ */
:root {
  --ivory: #f7f1e8;
  --ivory-deep: #efe6d6;
  --white: #ffffff;
  --gold: #9e7c4f;
  --gold-dark: #7d6139;
  --gold-light: #c8a878;
  --charcoal: #141414;
  --brown: #1e1813;
  --ink: #2b241c;
  --muted: #7a6f5f;
  --line: rgba(158, 124, 79, 0.35);
  --serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--ivory);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 820px; }

section { padding: 96px 0; scroll-margin-top: 70px; }

/* ---------- typography ---------- */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; color: var(--charcoal); }
h1 em, h2 em { font-style: italic; color: var(--gold-dark); }

.eyebrow {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--gold-dark); margin-bottom: 18px;
}
.eyebrow-gold { color: var(--gold-light); }
.eyebrow-sm { font-size: 10px; margin-bottom: 10px; }

.section-title { font-size: clamp(2rem, 4.5vw, 3rem); text-align: center; margin-bottom: 8px; }
.section-title-light { color: var(--ivory); }
.section-title-light em { color: var(--gold-light); }
.section-sub { text-align: center; color: var(--muted); max-width: 640px; margin: 0 auto 56px; }
.section-sub-light { color: rgba(247, 241, 232, 0.72); }

.rule { width: 72px; height: 1px; background: var(--gold); margin: 22px 0; }
.rule-center { margin-left: auto; margin-right: auto; }

/* ---------- buttons (sharp corners, uppercase) ---------- */
.btn {
  display: inline-block;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  padding: 16px 34px;
  text-decoration: none; text-align: center;
  border: 1px solid transparent;
  cursor: pointer; border-radius: 0;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.btn-gold { background: var(--gold); color: var(--charcoal); border-color: var(--gold); }
.btn-gold:hover { background: var(--gold-dark); border-color: var(--gold-dark); color: #fff; }
.btn-dark { background: var(--charcoal); color: var(--ivory); border-color: var(--charcoal); }
.btn-dark:hover { background: #000; }
.btn-ghost { background: transparent; color: var(--ivory); border-color: rgba(247,241,232,0.65); }
.btn-ghost:hover { border-color: var(--gold-light); color: var(--gold-light); }
.btn-outline-gold { background: transparent; color: var(--gold-dark); border-color: var(--gold); }
.btn-outline-gold:hover { background: var(--gold); color: var(--charcoal); }
.btn-sm { padding: 10px 20px; font-size: 11px; }
.btn-block { display: block; width: 100%; }

/* ---------- announcement bar ---------- */
.announce {
  background: var(--charcoal); color: var(--gold-light);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  text-align: center; padding: 10px 16px;
  display: flex; justify-content: center; align-items: center; gap: 14px; flex-wrap: wrap;
}
.announce a { color: var(--ivory); text-decoration: none; border-bottom: 1px solid var(--gold); }
.announce-dot { opacity: 0.5; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s;
}
.nav.scrolled { background: var(--ivory); box-shadow: 0 1px 0 var(--line); }
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 18px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.wordmark { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.monogram {
  width: 44px; height: 44px; border: 1px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 13px; letter-spacing: 0.08em;
  color: var(--gold-dark); background: rgba(158,124,79,0.08);
  flex-shrink: 0;
}
.wordmark-text { font-size: 13px; letter-spacing: 0.22em; font-weight: 500; color: var(--charcoal); }
.wordmark-text b { font-weight: 700; }
.nav-links { display: flex; gap: 30px; }
.nav-links a {
  font-size: 11px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; color: var(--ink); padding: 6px 0;
  border-bottom: 1px solid transparent; transition: border-color 0.25s, color 0.25s;
}
.nav-links a:hover { color: var(--gold-dark); border-color: var(--gold); }
.nav-ctas { display: flex; gap: 10px; }
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--charcoal); margin: 5px 0; transition: 0.3s; }
.mobile-menu {
  display: none; flex-direction: column; gap: 4px;
  background: var(--ivory); border-top: 1px solid var(--line);
  padding: 12px 24px 24px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a:not(.btn) {
  font-size: 12px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; padding: 12px 0; border-bottom: 1px solid var(--line);
}
.mobile-menu .btn { margin-top: 12px; }

/* ---------- hero ---------- */
.hero {
  min-height: calc(100vh - 120px);
  background:
    radial-gradient(1200px 600px at 80% 10%, rgba(158,124,79,0.14), transparent 60%),
    linear-gradient(160deg, #191512 0%, #141414 55%, #0d0b09 100%);
  color: var(--ivory);
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding: 80px 0;
}
.hero-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: center;
  width: 100%;
}
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); color: var(--ivory); margin-bottom: 6px; }
.hero h1 em { color: var(--gold-light); }
.hero-sub { font-size: 1.08rem; color: rgba(247,241,232,0.78); max-width: 480px; margin: 18px 0 34px; }
.hero-sub strong { color: var(--ivory); }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-frame {
  border: 1px solid rgba(158,124,79,0.5);
  padding: 14px; background: rgba(255,255,255,0.02);
}
.hero-frame img { width: 100%; height: 520px; object-fit: cover; }
.hero-caption {
  text-align: center; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold-light); padding: 14px 0 4px;
}
.hero-scroll {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  color: var(--gold-light); text-decoration: none; font-size: 20px; opacity: 0.7;
}

/* ---------- promise band ---------- */
.promise { background: var(--white); text-align: center; }
.promise-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px;
  margin-top: 56px; text-align: center;
}
.promise-item h3 { font-size: 1.35rem; margin: 20px 0 12px; }
.promise-item p { color: var(--muted); font-size: 0.96rem; }
.promise-icon { width: 52px; height: 52px; color: var(--gold); margin: 0 auto; }

/* ---------- collection ---------- */
.collection { background: var(--ivory); }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; margin-top: 8px; }
.product-card {
  background: var(--white); border: 1px solid var(--line);
  padding: 34px 30px 30px; text-align: center;
  display: flex; flex-direction: column;
  transition: box-shadow 0.3s, transform 0.3s;
}
.product-card:hover { box-shadow: 0 18px 44px rgba(20,20,20,0.10); transform: translateY(-4px); }
.product-card h3 { font-size: 1.45rem; margin-bottom: 18px; min-height: 3.4em; }
.product-photo { margin: 0 -30px 22px; overflow: hidden; }
.product-photo img { width: 100%; height: 300px; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .product-photo img { transform: scale(1.04); }
.product-desc { color: var(--muted); font-size: 0.93rem; margin-bottom: 14px; flex-grow: 1; }
.price { font-family: var(--serif); font-size: 1.9rem; font-weight: 700; color: var(--gold-dark); margin-bottom: 20px; }
.price-light { color: var(--gold-light); }
.product-alt { margin-top: 14px; font-size: 0.85rem; color: var(--muted); }
.product-alt a { color: var(--gold-dark); text-decoration: none; border-bottom: 1px solid var(--line); }

/* ---------- real pieces gallery ---------- */
.gallery { background: var(--white); }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 8px; }
.gallery-grid figure { margin: 0; overflow: hidden; border: 1px solid var(--line); background: var(--ivory); }
.gallery-grid img { width: 100%; height: 260px; object-fit: cover; display: block; transition: transform 0.5s; }
.gallery-grid figure:hover img { transform: scale(1.05); }
.gallery-grid figcaption { padding: 12px 14px; font-size: 0.85rem; color: var(--muted); text-align: center; }
.gallery-grid figure.sold { position: relative; }
.sold-badge { position: absolute; top: 12px; left: 12px; background: var(--charcoal); color: var(--ivory); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em; padding: 7px 11px; border-radius: 2px; z-index: 2; }
.sold-price { display: block; color: var(--gold-dark); font-weight: 700; margin-top: 4px; }
.gallery-cta { text-align: center; margin-top: 30px; font-size: 1.02rem; }
.gallery-cta a { color: var(--gold-dark); font-weight: 600; }

/* ---------- design configurator ---------- */
.design { background: var(--charcoal); color: var(--ivory); }
.design-layout {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; margin-top: 56px; align-items: start;
}
.design-tabs { display: flex; border-bottom: 1px solid rgba(158,124,79,0.35); margin-bottom: 32px; }
.design-tab {
  flex: 1; background: none; border: none; cursor: pointer;
  color: rgba(247,241,232,0.55); font-family: var(--sans);
  font-size: 11px; font-weight: 600; letter-spacing: 0.18em;
  padding: 16px 8px; border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: color 0.25s, border-color 0.25s;
}
.design-tab .tab-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border: 1px solid currentColor; border-radius: 50%;
  font-size: 11px; margin-right: 8px;
}
.design-tab.active { color: var(--gold-light); border-bottom-color: var(--gold); }
.design-panel { display: none; }
.design-panel.active { display: block; animation: fadeIn 0.4s; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.panel-label { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold-light); margin: 26px 0 14px; }
.panel-label:first-child { margin-top: 0; }
.panel-hint { color: rgba(247,241,232,0.55); font-size: 0.9rem; margin-top: 18px; }
.pill-group { display: flex; flex-wrap: wrap; gap: 12px; }
.pill {
  background: transparent; border: 1px solid rgba(158,124,79,0.5); color: var(--ivory);
  font-family: var(--sans); font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 13px 22px; cursor: pointer; border-radius: 0;
  transition: all 0.25s;
}
.pill:hover { border-color: var(--gold-light); color: var(--gold-light); }
.pill.active { background: var(--gold); border-color: var(--gold); color: var(--charcoal); }
input[type="range"] {
  width: 100%; appearance: none; -webkit-appearance: none; height: 2px;
  background: rgba(158,124,79,0.4); outline: none; margin: 10px 0 6px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--gold); border: 3px solid var(--charcoal);
  outline: 1px solid var(--gold); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--gold); border: 3px solid var(--charcoal); cursor: pointer;
}
.slider-scale { display: flex; justify-content: space-between; font-size: 11px; color: rgba(247,241,232,0.5); letter-spacing: 0.1em; }
#caratVal { color: var(--gold-light); }

.summary {
  background: rgba(247,241,232,0.04);
  border: 1px solid rgba(158,124,79,0.45);
  padding: 36px 32px; position: sticky; top: 120px;
}
.summary-list { list-style: none; margin: 20px 0 26px; }
.summary-list li {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 12px 0; border-bottom: 1px solid rgba(158,124,79,0.25);
  font-size: 0.92rem;
}
.summary-list span { color: rgba(247,241,232,0.6); letter-spacing: 0.08em; text-transform: uppercase; font-size: 11px; }
.summary-list b { font-weight: 600; color: var(--ivory); text-align: right; }
.summary-price { text-align: center; margin: 8px 0 26px; }
.summary-price .price { font-size: 2.6rem; margin: 6px 0; }
.summary-note { font-size: 0.8rem; color: rgba(247,241,232,0.55); letter-spacing: 0.06em; }

/* ---------- video band ---------- */
.video-band { background: var(--white); padding: 80px 0; }
.video-frame { border: 1px solid var(--line); padding: 12px; background: var(--ivory); margin-top: 32px; }
.video-frame video { width: 100%; max-height: 520px; background: #000; }

/* ---------- education ---------- */
.education { background: var(--ivory); }
.edu-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.edu-copy .section-title { text-align: left; }
.edu-copy .rule { margin-left: 0; }
.edu-copy p { margin-bottom: 18px; color: #4a4237; }
.edu-copy .btn { margin-top: 12px; }
.edu-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.edu-card { background: var(--charcoal); color: var(--ivory); padding: 32px 28px; }
.edu-card h3 { color: var(--ivory); font-size: 1.25rem; margin: 16px 0 8px; }
.edu-card p { font-size: 0.9rem; color: rgba(247,241,232,0.68); }
.edu-icon { width: 40px; height: 40px; color: var(--gold-light); }

/* ---------- stats ---------- */
.stats { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-value { font-family: var(--serif); font-size: 2rem; font-weight: 700; color: var(--gold-dark); }
.stat-label { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); margin-top: 6px; }

/* ---------- story ---------- */
.story { background: var(--ivory); }
.story-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: center; }
.story-photo { border: 1px solid var(--line); padding: 12px; background: var(--white); }
.story-photo img { width: 100%; height: 520px; object-fit: cover; }
.story-copy .section-title { text-align: left; }
.story-copy .rule { margin-left: 0; }
.story-copy p { margin-bottom: 18px; color: #4a4237; }
.story-sign { font-family: var(--serif); font-size: 1.3rem; color: var(--charcoal); }
.story-sign span { font-size: 0.85rem; font-family: var(--sans); letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold-dark); }

/* ---------- FAQ ---------- */
.faq { background: var(--white); }
.faq-list { margin-top: 48px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: baseline; gap: 16px;
  padding: 24px 4px;
  font-family: var(--serif); font-size: 1.25rem; font-weight: 600; color: var(--charcoal);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-tri {
  width: 0; height: 0; flex-shrink: 0; transform: translateY(-1px);
  border-left: 7px solid transparent; border-right: 7px solid transparent;
  border-top: 10px solid var(--gold);
  transition: transform 0.3s;
}
.faq-item[open] .faq-tri { transform: rotate(180deg) translateY(1px); }
.faq-item p { padding: 0 4px 28px 30px; color: #4a4237; max-width: 720px; }

/* ---------- consultation band ---------- */
.consult { background: var(--brown); text-align: center; }
.consult-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
.consult-note { margin-top: 28px; font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(247,241,232,0.55); }

/* ---------- reviews ---------- */
.reviews { background: var(--ivory); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 56px; }
.review-card {
  background: var(--white); border: 1px solid var(--line);
  padding: 40px 32px; text-align: center;
}
.review-stars { color: var(--gold); letter-spacing: 0.3em; font-size: 1.1rem; }
.review-big { font-family: var(--serif); font-size: 2.2rem; font-weight: 700; color: var(--charcoal); margin: 10px 0; }
.review-text { color: var(--muted); font-size: 0.94rem; margin-bottom: 20px; }
.testimonial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 40px; }
.testimonial-card { background: var(--white); border: 1px solid var(--line); padding: 32px 30px; margin: 0; text-align: left; }
.testimonial-card blockquote { margin: 0; font-family: var(--serif); font-size: 1.04rem; line-height: 1.65; color: var(--charcoal); }
.testimonial-card figcaption { margin-top: 18px; font-size: 0.85rem; color: var(--muted); }
.testimonial-card figcaption a { color: var(--gold-dark); font-weight: 600; }
.t-stars { color: var(--gold); letter-spacing: 0.3em; font-size: 0.95rem; margin-bottom: 14px; }
.review-link { color: var(--gold-dark); font-size: 12px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none; border-bottom: 1px solid var(--gold); padding-bottom: 3px; }

/* ---------- final CTA ---------- */
.final-cta { background: var(--charcoal); text-align: center; }
.final-ctas { margin-top: 36px; }
.final-phone { margin-top: 24px; color: rgba(247,241,232,0.7); }
.final-phone a { color: var(--gold-light); text-decoration: none; border-bottom: 1px solid var(--gold); }

/* ---------- footer ---------- */
.footer { background: #0d0b09; color: rgba(247,241,232,0.65); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 56px; }
.footer-brand .wordmark-text { color: var(--ivory); }
.footer-brand p { font-size: 0.9rem; margin-top: 18px; max-width: 300px; }
.footer-head { font-size: 11px; font-weight: 600; letter-spacing: 0.24em; color: var(--gold-light); margin-bottom: 18px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; font-size: 0.92rem; }
.footer-col a { text-decoration: none; transition: color 0.25s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-legal {
  border-top: 1px solid rgba(158,124,79,0.25);
  padding: 24px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 0.8rem; color: rgba(247,241,232,0.4);
}

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .nav-links, .nav-ctas { display: none; }
  .hamburger { display: block; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-frame img { height: 420px; }
  .product-grid { grid-template-columns: 1fr; max-width: 520px; margin-left: auto; margin-right: auto; }
  .design-layout { grid-template-columns: 1fr; }
  .summary { position: static; }
  .edu-layout { grid-template-columns: 1fr; }
  .story-layout { grid-template-columns: 1fr; }
  .story-photo img { height: 420px; }
  .review-grid { grid-template-columns: 1fr; max-width: 520px; margin-left: auto; margin-right: auto; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .promise-grid { grid-template-columns: 1fr; gap: 40px; max-width: 480px; margin-left: auto; margin-right: auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 72px 0; }
}
@media (max-width: 560px) {
  .edu-cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-ctas .btn { width: 100%; }
  .design-tab { font-size: 10px; padding: 14px 4px; }
  .design-tab .tab-num { margin-right: 4px; }
}