/* ==========================================================================
   Biovipure — Design system
   Palette botanique-clinique : vert forêt profond, sauge, curcuma (accent),
   fond parchemin froid. Display serif "Fraunces" + texte "Public Sans" +
   mono "IBM Plex Mono" pour les données (prix, réf.).
   ========================================================================== */

:root {
  --color-bg: #F4F5EE;
  --color-bg-alt: #EAECDF;
  --color-surface: #FFFFFF;
  --color-ink: #16221A;
  --color-ink-soft: #4B5A44;
  --color-ink-faint: #78846E;
  --color-primary: #23422C;
  --color-primary-light: #3C6146;
  --color-primary-dark: #142A1B;
  --color-sage: #A9C0A0;
  --color-sage-light: #DCE6D3;
  --color-accent: #D98A34;
  --color-accent-dark: #AD6B21;
  --color-accent-soft: #F3E0C4;
  --color-line: #D6D8C7;
  --color-white: #FFFFFF;

  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 22px;
  --shadow-card: 0 1px 2px rgba(22,34,26,0.06), 0 8px 24px -12px rgba(22,34,26,0.16);
  --shadow-hover: 0 1px 2px rgba(22,34,26,0.08), 0 16px 32px -12px rgba(22,34,26,0.24);
  --max-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root { color-scheme: light; }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html:focus-within { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2.5px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-primary-dark);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.2rem, 4.2vw, 3.6rem); font-weight: 560; }
h2 { font-size: clamp(1.7rem, 2.6vw, 2.35rem); }
h3 { font-size: 1.28rem; }
p { margin: 0 0 1em; color: var(--color-ink-soft); }
strong { color: var(--color-ink); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 16px;
  height: 1.5px;
  background: var(--color-accent);
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--color-accent);
  color: #241505;
  box-shadow: 0 8px 20px -8px rgba(217,138,52,0.65);
}
.btn-primary:hover { background: var(--color-accent-dark); box-shadow: 0 10px 24px -8px rgba(173,107,33,0.6); }
.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-ghost {
  background: var(--color-sage-light);
  color: var(--color-primary-dark);
}
.btn-ghost:hover { background: var(--color-sage); }
.btn-block { width: 100%; }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244,245,238,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}
.logo svg { flex-shrink: 0; }
.logo em { font-style: italic; color: var(--color-accent-dark); }

.main-nav { display: flex; align-items: center; gap: 34px; }
.main-nav a {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  position: relative;
  padding: 6px 0;
}
.main-nav a:hover { color: var(--color-primary); }
.main-nav .nav-links { display: flex; gap: 30px; }

.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 22px; height: 2px; background: var(--color-primary-dark);
  position: relative; transition: transform .2s ease;
}
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after { position: absolute; top: 7px; }

/* ---------- Hero ---------- */
.hero {
  padding: 68px 0 84px;
  position: relative;
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero-copy h1 { margin-bottom: 0.42em; }
.hero-copy .lede {
  font-size: 1.14rem;
  color: var(--color-ink-soft);
  max-width: 46ch;
  margin-bottom: 1.6em;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }

.hero-search {
  display: flex;
  gap: 8px;
  background: var(--color-surface);
  border: 1.5px solid var(--color-line);
  border-radius: 999px;
  padding: 6px 6px 6px 20px;
  max-width: 460px;
  box-shadow: var(--shadow-card);
}
.hero-search input {
  border: none; outline: none; flex: 1; font-family: var(--font-body);
  font-size: 0.95rem; background: transparent; color: var(--color-ink);
}
.hero-search input::placeholder { color: var(--color-ink-faint); }

.trust-row {
  display: flex; gap: 26px; flex-wrap: wrap; margin-top: 30px;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .06em;
  color: var(--color-ink-faint); text-transform: uppercase;
}
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-row svg { color: var(--color-primary-light); }

.hero-art { position: relative; }
.hero-art svg { width: 100%; height: auto; }

/* ---------- Section shells ---------- */
section { padding: 76px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 20px; margin-bottom: 40px; flex-wrap: wrap;
}
.section-head p { max-width: 52ch; margin: 0.5em 0 0; }

/* ---------- Category grid ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.cat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease;
  display: flex; flex-direction: column; gap: 14px;
}
.cat-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--color-sage); }
.cat-icon {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--color-sage-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
}
.cat-card h3 { margin-bottom: 2px; font-size: 1.1rem; }
.cat-card p { font-size: 0.89rem; margin-bottom: 4px; }
.cat-count { font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-ink-faint); }

/* ---------- Product cards (fiche botanique) ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.product-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: box-shadow .18s ease, transform .18s ease;
}
.product-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.product-card .ref {
  position: absolute; top: 12px; left: 12px;
  font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: .04em;
  background: rgba(244,245,238,0.92); color: var(--color-ink-faint);
  padding: 3px 8px; border-radius: 999px; border: 1px solid var(--color-line);
  z-index: 2;
}
.product-card .cat-tag {
  position: absolute; top: 12px; right: 12px;
  font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: .04em; text-transform: uppercase;
  background: var(--color-primary); color: #fff;
  padding: 4px 9px; border-radius: 999px; z-index: 2;
}
.product-media {
  background: var(--color-sage-light);
  aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  padding: 22px;
  position: relative;
}
.product-media img { max-height: 100%; width: auto; margin: 0 auto; mix-blend-mode: multiply; }
.product-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-body h3 { margin: 0; font-size: 1.14rem; }
.product-body h3 a { color: inherit; }
.product-body h3 a:hover { color: var(--color-primary); }
.tagline { font-size: 0.89rem; color: var(--color-ink-soft); margin: 0; flex: 1; }
.product-foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 6px; padding-top: 14px; border-top: 1px dashed var(--color-line);
}
.price { font-family: var(--font-mono); font-weight: 600; color: var(--color-accent-dark); font-size: 1.02rem; }
.price small { font-weight: 400; color: var(--color-ink-faint); font-size: 0.68rem; }

.price-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.price-old {
  font-family: var(--font-mono); font-size: 0.92rem; font-weight: 600;
  color: var(--color-ink-faint) !important;
  text-decoration: line-through !important;
  -webkit-text-decoration: line-through !important;
  text-decoration-color: var(--color-accent-dark) !important;
  text-decoration-thickness: 2px !important;
  opacity: 0.85;
}
.promo-badge {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--color-accent); color: #241505;
  font-family: var(--font-mono); font-size: 0.64rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .05em;
  padding: 4px 9px; border-radius: 999px;
  animation: pulse-promo 2.2s ease-in-out infinite;
}
.promo-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #241505; opacity: .7; }
@keyframes pulse-promo {
  0%, 100% { box-shadow: 0 0 0 0 rgba(217,138,52,0.45); }
  50% { box-shadow: 0 0 0 5px rgba(217,138,52,0); }
}
.price-block .price-old { font-size: 2.1rem; }
.price-block { flex-wrap: wrap; }
.promo-note { font-size: 0.8rem; color: var(--color-ink-faint); margin: 2px 0 0; }

/* ---------- Editorial / content blocks ---------- */
.prose { max-width: 72ch; }
.prose h2, .prose h3 { margin-top: 1.3em; }
.two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}
.guide-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.guide-list li {
  display: grid; grid-template-columns: 34px 1fr; gap: 14px;
  padding-bottom: 18px; border-bottom: 1px solid var(--color-line);
}
.guide-list li:last-child { border-bottom: none; }
.guide-num {
  font-family: var(--font-mono); color: var(--color-accent-dark); font-weight: 600; font-size: 0.95rem;
}
.guide-list h4 { margin: 0 0 4px; font-size: 1.02rem; font-family: var(--font-body); font-weight: 700; }
.guide-list p { margin: 0; font-size: 0.92rem; }

/* ---------- FAQ ---------- */
.faq { max-width: 800px; margin: 0 auto; display: grid; gap: 10px; }
.faq-item {
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer; padding: 18px 22px; font-weight: 700; font-size: 1rem;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
  color: var(--color-primary-dark);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-family: var(--font-mono); font-size: 1.3rem; color: var(--color-accent); flex-shrink: 0; margin-left: 12px;
  transition: transform .15s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 22px 20px; margin: 0; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-banner h2, .cta-banner p { color: #fff; }
.cta-banner p { color: var(--color-sage-light); margin: 0; max-width: 46ch; }
.cta-banner .btn-primary { flex-shrink: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-primary-dark); color: var(--color-sage-light); padding: 64px 0 28px; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-grid h4 { color: #fff; font-family: var(--font-body); font-size: 0.82rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 16px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-grid a { color: var(--color-sage-light); font-size: 0.9rem; }
.footer-grid a:hover { color: #fff; }
.footer-about p { color: rgba(220,230,211,0.75); font-size: 0.9rem; max-width: 34ch; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; padding-top: 24px;
  font-size: 0.8rem; color: rgba(220,230,211,0.6); flex-wrap: wrap; gap: 12px;
}
.footer-bottom a { color: rgba(220,230,211,0.8); }
.disclaimer-box {
  margin-top: 26px; padding: 16px 20px; background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-sm);
  font-size: 0.78rem; color: rgba(220,230,211,0.65); line-height: 1.55;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-mono); font-size: 0.76rem; color: var(--color-ink-faint);
  padding: 22px 0 0; display: flex; gap: 8px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-ink-faint); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span.sep { opacity: .5; }
.breadcrumb .current { color: var(--color-ink); }

/* ---------- Product page ---------- */
.product-hero { padding: 30px 0 70px; }
.product-hero .wrap { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 54px; align-items: flex-start; }
.product-gallery {
  background: var(--color-sage-light);
  border-radius: var(--radius-lg);
  padding: 40px; position: sticky; top: 104px;
  border: 1px solid var(--color-line);
}
.product-gallery img { margin: 0 auto; mix-blend-mode: multiply; }
.product-gallery .ref { position: static; display: inline-block; margin-bottom: 18px; background: var(--color-surface); }
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 22px; }
.pill {
  font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: .05em;
  background: var(--color-sage-light); color: var(--color-primary-dark);
  padding: 5px 11px; border-radius: 999px; border: 1px solid var(--color-line);
}
.price-block {
  display: flex; align-items: baseline; gap: 10px; margin: 22px 0 10px;
}
.price-block .amount { font-family: var(--font-mono); font-size: 2.1rem; font-weight: 600; color: var(--color-accent-dark); }
.price-block .unit { font-size: 0.85rem; color: var(--color-ink-faint); }
.buy-box {
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius-md);
  padding: 26px; margin: 24px 0; box-shadow: var(--shadow-card);
}
.buy-box .stock { font-size: 0.85rem; color: var(--color-primary-light); font-weight: 700; display: flex; align-items: center; gap: 7px; margin-bottom: 14px; }
.buy-box .stock::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--color-primary-light); display: inline-block; }
.buy-box small { display: block; margin-top: 12px; color: var(--color-ink-faint); font-size: 0.76rem; }

.benefit-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.benefit-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 0.96rem; color: var(--color-ink); }
.benefit-list svg { flex-shrink: 0; margin-top: 3px; color: var(--color-primary); }

.info-note {
  background: var(--color-accent-soft); border: 1px solid #E8C793; border-radius: var(--radius-sm);
  padding: 16px 18px; font-size: 0.84rem; color: #5a3c11; margin-top: 28px;
}

.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ---------- Catalogue / filters ---------- */
.filter-bar {
  display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 34px; align-items: center;
}
.filter-chip {
  font-family: var(--font-mono); font-size: 0.76rem; text-transform: uppercase; letter-spacing: .04em;
  padding: 9px 16px; border-radius: 999px; border: 1.5px solid var(--color-line);
  background: var(--color-surface); cursor: pointer; color: var(--color-ink-soft);
  transition: all .15s ease;
}
.filter-chip:hover { border-color: var(--color-primary-light); }
.filter-chip.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.search-box {
  display: flex; align-items: center; gap: 8px; background: var(--color-surface);
  border: 1.5px solid var(--color-line); border-radius: 999px; padding: 9px 16px 9px 16px;
  margin-left: auto; min-width: 220px;
}
.search-box input { border: none; outline: none; background: transparent; font-family: var(--font-body); font-size: 0.88rem; flex: 1; }
.results-count { font-family: var(--font-mono); font-size: 0.78rem; color: var(--color-ink-faint); margin-bottom: 22px; }
.empty-state { text-align: center; padding: 60px 0; color: var(--color-ink-faint); }

/* ---------- Page intro (catalogue/about) ---------- */
.page-intro { padding: 40px 0 20px; }
.page-intro h1 { margin-bottom: 0.3em; }
.page-intro .lede { max-width: 62ch; font-size: 1.06rem; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 340px; margin: 0 auto; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 30px; }
  .product-hero .wrap { grid-template-columns: 1fr; }
  .product-gallery { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .main-nav .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .cat-grid { grid-template-columns: 1fr; }
  .product-grid, .related-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 36px 26px; flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  section { padding: 52px 0; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .search-box { margin-left: 0; }
}

/* body scroll lock when mobile nav open */
body.nav-open { overflow: hidden; }
.mobile-nav-panel {
  display: none;
  position: fixed; inset: 78px 0 0 0; background: var(--color-bg); z-index: 49;
  padding: 30px 24px; overflow-y: auto;
}
body.nav-open .mobile-nav-panel { display: block; }
.mobile-nav-panel a {
  display: block; font-family: var(--font-display); font-size: 1.5rem; padding: 14px 0;
  border-bottom: 1px solid var(--color-line); color: var(--color-primary-dark);
}