/* Lucent Sciences — shared site styles */
:root {
  --bg: #0b0f14;
  --bg-alt: #11161d;
  --card: #161c25;
  --border: #232b36;
  --text: #e8edf2;
  --text-dim: #9aa6b2;
  --accent: #3fd0ff;
  --accent-dim: #1b8fb8;
  --danger: #ff6b6b;
  --radius: 10px;
  --max: 1200px;
  font-size: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0 0 .5em; font-weight: 700; letter-spacing: .01em; }
p { margin: 0 0 1em; color: var(--text-dim); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  background: var(--accent);
  color: #04141b;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { background: #6adfff; transform: translateY(-1px); }
.btn.outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}
.btn.outline:hover { background: rgba(63,208,255,.1); }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .75rem;
  color: var(--accent);
  font-weight: 700;
}

/* Announcement bar */
.announce {
  background: var(--accent);
  color: #04141b;
  text-align: center;
  font-size: .85rem;
  font-weight: 700;
  padding: 8px 16px;
}

/* Header */
header.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 24px;
  max-width: var(--max);
  margin: 0 auto;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: .04em;
  white-space: nowrap;
}
.logo .mark {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #7fe8ff, var(--accent) 60%, var(--accent-dim));
  box-shadow: 0 0 16px rgba(63,208,255,.5);
}
nav.main-nav {
  display: flex;
  gap: 22px;
  flex: 1;
  font-size: .92rem;
  font-weight: 600;
}
nav.main-nav a { color: var(--text-dim); }
nav.main-nav a:hover { color: var(--text); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: .9rem;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
}
.search-box input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: .85rem;
  width: 140px;
}
.menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; }

/* Hero */
.hero {
  padding: 64px 24px 48px;
  text-align: center;
  background: radial-gradient(ellipse at 50% -10%, rgba(63,208,255,.15), transparent 60%);
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  max-width: 780px;
  margin: 12px auto 24px;
}

/* Category tiles */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 56px;
}
.category-tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  transition: border-color .15s ease, transform .15s ease;
}
.category-tile:hover { border-color: var(--accent); transform: translateY(-3px); }
.category-tile .icon {
  width: 48px; height: 48px;
  margin: 0 auto 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
}
.category-tile h3 { margin: 0; font-size: 1rem; }

/* Section headers */
.section { padding: 56px 24px; }
.section-head { text-align: center; margin-bottom: 36px; }
.section-head h2 { font-size: 1.8rem; }
.section.alt { background: var(--bg-alt); }

/* Trust columns */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: var(--max);
  margin: 0 auto;
}
.trust-item { text-align: center; padding: 0 12px; }
.trust-item .icon {
  width: 52px; height: 52px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 1.4rem;
}
.trust-item h3 { font-size: 1.05rem; }

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: var(--max);
  margin: 0 auto;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.product-card .thumb {
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, #1c2733, #0e141b);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-dim);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.product-card .body { padding: 14px 16px 18px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: .95rem; margin: 0 0 6px; }
.product-card .price { color: var(--accent); font-weight: 700; margin: 0 0 12px; }
.product-card .btn { margin-top: auto; width: 100%; text-align: center; font-size: .85rem; padding: 10px; }

/* About */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  max-width: var(--max);
  margin: 0 auto;
  align-items: center;
}
.about-split .art {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #16222c, #0b0f14);
  border: 1px solid var(--border);
}

/* Newsletter */
.newsletter {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 24px;
  text-align: center;
}
.newsletter h2 { font-size: 1.6rem; }
.newsletter form {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.newsletter input[type=email] {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  width: 280px;
  max-width: 80vw;
}

/* Footer */
footer.site-footer {
  padding: 48px 24px 24px;
  background: var(--bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  max-width: var(--max);
  margin: 0 auto 32px;
}
.footer-grid h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); }
.footer-grid ul li { margin-bottom: 8px; }
.footer-grid a { color: var(--text-dim); font-size: .9rem; }
.footer-grid a:hover { color: var(--accent); }
.disclaimer {
  max-width: var(--max);
  margin: 0 auto 24px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .78rem;
  color: var(--text-dim);
}
.footer-bottom {
  max-width: var(--max);
  margin: 0 auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .82rem;
  color: var(--text-dim);
}

/* Page header (stub pages) */
.page-hero {
  padding: 48px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.page-hero h1 { font-size: 2rem; margin-bottom: 6px; }
.breadcrumb { font-size: .8rem; color: var(--text-dim); }
.breadcrumb a:hover { color: var(--accent); }

.content-block {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 24px;
}
.content-block h2 { margin-top: 1.4em; }

.form-card {
  max-width: 560px;
  margin: 0 auto;
  padding: 40px 24px;
}
.form-card label {
  display: block;
  font-size: .85rem;
  color: var(--text-dim);
  margin: 16px 0 6px;
}
.form-card input, .form-card textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-family: inherit;
}
.form-card .btn { margin-top: 24px; }

@media (max-width: 900px) {
  .category-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: 1fr; }
  .about-split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  nav.main-nav { display: none; }
  .menu-toggle { display: block; }
}