/* ==========================================================
   RUSTICA PIERRE — Static Site CSS
   Direction Carriere v2 — White 80%, sable/terre 15%, noir 5%
   Terracotta signature #C66B3D
   ========================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  font-family: var(--r-font-body);
  color: var(--r-noir);
  background: var(--r-white);
}

::selection { background: var(--r-terracotta); color: #fff; }

/* -- Variables -- */
:root {
  --r-font-display: 'Playfair Display', Georgia, serif;
  --r-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --r-font-italic: 'DM Serif Display', Georgia, serif;
  --r-font-mono: 'DM Mono', 'Courier New', monospace;
  --r-ease: cubic-bezier(0.25, 0.1, 0.25, 1);

  --r-white:      #FFFFFF;
  --r-os:         #FAF8F5;
  --r-sable:      #E8E0D0;
  --r-sable-dark: #C8BAA4;
  --r-terre:      #8B7355;
  --r-pierre:     #5C4F3D;
  --r-pierre-lt:  #A0947E;
  --r-noir:       #15110C;
  --r-anthracite: #1F1A14;
  --r-terracotta: #C66B3D;
  --r-ink:        #2A2520;

  --r-shadow-card: 0 1px 3px rgba(21,17,12,0.06), 0 8px 24px rgba(21,17,12,0.06);
  --r-shadow-hover: 0 2px 8px rgba(21,17,12,0.08), 0 16px 40px rgba(21,17,12,0.1);

  --r-max-w: 1200px;
  --r-px: clamp(1rem, 4vw, 3rem);
}

/* -- Google Fonts chargées via components.js -- */

/* ==========================================================
   LAYOUT
   ========================================================== */
.container {
  max-width: var(--r-max-w);
  margin: 0 auto;
  padding: 0 var(--r-px);
}

.section { padding: clamp(3rem, 6vw, 6rem) 0; }
.section--dark { background: var(--r-anthracite); color: var(--r-white); }
.section--os { background: var(--r-os); }

/* ==========================================================
   HEADER
   ========================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(31,26,20,0.06);
  transition: box-shadow 0.3s var(--r-ease);
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(21,17,12,0.08); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--r-max-w);
  margin: 0 auto;
  padding: 0 var(--r-px);
}

.site-logo img { height: 36px; width: auto; display: block; }

.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a {
  font-family: var(--r-font-body);
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--r-noir);
  text-decoration: none;
  position: relative;
  transition: color 0.2s;
}
.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--r-terracotta);
  transition: width 0.25s var(--r-ease);
}
.site-nav a:hover { color: var(--r-terracotta); }
.site-nav a:hover::after { width: 100%; }

.btn-nav-devis {
  background: var(--r-terracotta) !important;
  color: #fff !important;
  padding: 0.5rem 1.25rem !important;
  font-weight: 600 !important;
  transition: background 0.2s, transform 0.15s !important;
}
.btn-nav-devis:hover { background: #a8562e !important; transform: translateY(-1px); }
.btn-nav-devis::after { display: none !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--r-noir);
  transition: all 0.25s;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 1.5rem var(--r-px);
    gap: 1.25rem;
    border-bottom: 1px solid var(--r-sable);
    box-shadow: 0 8px 24px rgba(21,17,12,0.08);
  }
  .site-nav.open { display: flex; }
  .btn-nav-devis { width: 100%; text-align: center; padding: 0.75rem 1.25rem !important; }
}

/* ==========================================================
   FOOTER
   ========================================================== */
.site-footer {
  background: var(--r-noir);
  color: var(--r-sable);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-logo img { height: 40px; filter: brightness(0) invert(1); margin-bottom: 1rem; display: block; }
.footer-tagline {
  font-family: var(--r-font-italic);
  font-style: italic;
  font-size: 1rem;
  color: var(--r-pierre-lt);
  margin-bottom: 1rem;
  line-height: 1.5;
}
.footer-contact { font-size: 0.875rem; line-height: 1.8; color: var(--r-pierre-lt); }
.footer-contact a { color: inherit; text-decoration: none; }
.footer-contact a:hover { color: var(--r-white); }
.footer-label {
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--r-terracotta);
  display: block;
  margin-bottom: 1rem;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a {
  color: var(--r-pierre-lt);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--r-white); }
.footer-hours { font-size: 0.875rem; line-height: 1.8; color: var(--r-pierre-lt); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--r-terre);
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-rating {
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--r-pierre-lt);
}
.footer-rating span { color: var(--r-terracotta); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

/* ==========================================================
   TYPOGRAPHY
   ========================================================== */
.heading-display {
  font-family: var(--r-font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
}
.heading-serif { font-family: var(--r-font-italic); font-weight: 400; }
.label-mono {
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--r-terracotta);
  display: block;
}
.terracotta { color: var(--r-terracotta); }

/* ==========================================================
   BUTTONS
   ========================================================== */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--r-font-body);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: all 0.2s var(--r-ease);
  cursor: pointer;
  border: none;
  line-height: 1;
}
.btn-primary { background: var(--r-terracotta); color: #fff; }
.btn-primary:hover { background: #a8562e; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(198,107,61,0.3); }
.btn-outline { background: transparent; color: var(--r-noir); border: 1.5px solid var(--r-noir); }
.btn-outline:hover { background: var(--r-noir); color: #fff; }
.btn-outline-white { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.4); }
.btn-outline-white:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.7); }

/* ==========================================================
   HERO
   ========================================================== */
.hero {
  position: relative;
  min-height: clamp(520px, 72vh, 860px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--r-anthracite);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.42;
  transform: scale(1.02);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 5rem var(--r-px);
  max-width: var(--r-max-w);
  margin: 0 auto;
  width: 100%;
  color: #fff;
}
.hero-label { margin-bottom: 1.5rem; color: var(--r-terracotta); }
.hero-title {
  font-family: var(--r-font-display);
  font-size: clamp(2.5rem, 6vw, 4.75rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: rgba(255,255,255,0.72);
  max-width: 540px;
  margin-bottom: 2.5rem;
  line-height: 1.65;
}
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ==========================================================
   PRODUCT CARDS
   ========================================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.product-card {
  background: var(--r-white);
  box-shadow: var(--r-shadow-card);
  transition: box-shadow 0.3s var(--r-ease), transform 0.3s var(--r-ease);
  overflow: hidden;
}
.product-card:hover {
  box-shadow: var(--r-shadow-hover);
  transform: translateY(-4px);
}
.product-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--r-ease);
}
.product-card:hover .product-card-img { transform: scale(1.03); }
.product-card-body { padding: 1.5rem; }
.product-card-label { margin-bottom: 0.5rem; }
.product-card-title {
  font-family: var(--r-font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 0.75rem;
  color: var(--r-noir);
}
.product-card-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--r-pierre);
  margin-bottom: 1.25rem;
}
.product-card-cta {
  font-family: var(--r-font-body);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--r-terracotta);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.2s;
}
.product-card-cta:hover { gap: 0.8rem; }
.product-card-cta::after { content: '→'; }

/* ==========================================================
   STATS STRIP
   ========================================================== */
.stats-strip {
  background: var(--r-anthracite);
  padding: 3.5rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-number {
  font-family: var(--r-font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--r-terracotta);
  display: block;
  line-height: 1;
}
.stat-label {
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--r-pierre-lt);
  display: block;
  margin-top: 0.6rem;
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================
   FAQ
   ========================================================== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--r-sable); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 1.25rem 0;
  font-family: var(--r-font-body);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: var(--r-noir);
  line-height: 1.4;
}
.faq-icon {
  width: 22px; height: 22px;
  flex-shrink: 0;
  border: 1.5px solid var(--r-sable-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  transition: transform 0.25s, background 0.25s, border-color 0.25s;
  color: var(--r-terre);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--r-terracotta);
  border-color: var(--r-terracotta);
  color: #fff;
}
.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s var(--r-ease);
}
.faq-answer-inner {
  padding-bottom: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--r-pierre);
}
.faq-item.open .faq-answer { max-height: 600px; }

/* ==========================================================
   CTA BAND
   ========================================================== */
.cta-band {
  background: var(--r-terracotta);
  padding: 4.5rem 0;
  text-align: center;
  color: #fff;
}
.cta-band-title {
  font-family: var(--r-font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 1rem;
}
.cta-band-sub {
  font-size: 1.0625rem;
  opacity: 0.88;
  margin-bottom: 2rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.55;
}
.cta-band-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ==========================================================
   REALISATIONS GRID
   ========================================================== */
.realisations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.realisation-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  display: block;
}
.realisation-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s var(--r-ease);
}
.realisation-card:hover img { transform: scale(1.05); }
.realisation-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(21,17,12,0.72) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}
.realisation-label {
  font-family: var(--r-font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #fff;
}

@media (max-width: 600px) {
  .realisations-grid { grid-template-columns: 1fr; }
}

/* ==========================================================
   PAGE HEADER (pages secondaires)
   ========================================================== */
.page-header {
  background: var(--r-os);
  padding: 4.5rem var(--r-px) 3.5rem;
  border-bottom: 1px solid var(--r-sable);
}
.page-header-inner { max-width: var(--r-max-w); margin: 0 auto; }
.page-title {
  font-family: var(--r-font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--r-noir);
}
.page-intro {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--r-pierre);
  max-width: 640px;
}

/* ==========================================================
   BREADCRUMB
   ========================================================== */
.breadcrumb {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--r-terre);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--r-terre); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--r-terracotta); }
.breadcrumb-sep { opacity: 0.4; }

/* ==========================================================
   PRODUCT DETAIL (pierres page alternating sections)
   ========================================================== */
.product-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.product-split-img {
  width: 100%;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.product-specs { list-style: none; margin-bottom: 2rem; }
.product-specs li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--r-sable);
  font-size: 0.9375rem;
  color: var(--r-pierre);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.product-specs li::before { content: '—'; color: var(--r-terracotta); flex-shrink: 0; }

@media (max-width: 768px) {
  .product-split { grid-template-columns: 1fr; gap: 2rem; }
  .product-split.reverse { direction: ltr; }
  .product-split.reverse .product-split-img { order: -1; }
}

/* ==========================================================
   CONTACT FORM
   ========================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.contact-form { }
.form-group { margin-bottom: 1.5rem; }
.form-label {
  display: block;
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--r-terre);
  margin-bottom: 0.5rem;
}
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1.5px solid var(--r-sable);
  background: var(--r-white);
  font-family: var(--r-font-body);
  font-size: 0.9375rem;
  color: var(--r-noir);
  border-radius: 0;
  transition: border-color 0.2s;
  outline: none;
  appearance: none;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--r-terracotta);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--r-sable-dark); }
.form-textarea { min-height: 150px; resize: vertical; }
.form-success {
  display: none;
  background: #f0faf0;
  color: #2e7d32;
  padding: 1rem 1.25rem;
  font-weight: 600;
  margin-top: 1rem;
  font-size: 0.9375rem;
}
.contact-info-block { margin-bottom: 2rem; }
.contact-info-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--r-noir);
  text-decoration: none;
  display: block;
  margin-bottom: 0.25rem;
}
.contact-info-value:hover { color: var(--r-terracotta); }
.contact-info-sub { font-size: 0.875rem; color: var(--r-terre); }

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
}

/* ==========================================================
   BLOG / JOURNAL
   ========================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.article-card { }
.article-card-cat {
  font-family: var(--r-font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--r-terracotta);
  margin-bottom: 0.75rem;
  display: block;
}
.article-card-title {
  font-family: var(--r-font-display);
  font-size: 1.0625rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.75rem;
  color: var(--r-noir);
  text-decoration: none;
  display: block;
  transition: color 0.2s;
  line-height: 1.3;
}
.article-card-title:hover { color: var(--r-terracotta); }
.article-card-excerpt {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--r-pierre);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--r-sable);
}

@media (max-width: 900px) { .articles-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .articles-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   ARTICLE PAGE
   ========================================================== */
.article-header {
  background: var(--r-os);
  padding: 4rem var(--r-px) 3rem;
  border-bottom: 1px solid var(--r-sable);
}
.article-header-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem var(--r-px) 4rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--r-noir);
}
.article-body h2 {
  font-family: var(--r-font-display);
  font-size: 1.625rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 2.5rem 0 1rem;
  color: var(--r-noir);
}
.article-body h3 {
  font-family: var(--r-font-body);
  font-weight: 600;
  font-size: 1.125rem;
  margin: 2rem 0 0.75rem;
  color: var(--r-ink);
}
.article-body p { margin-bottom: 1.25rem; }
.article-body ul, .article-body ol {
  margin: 0.75rem 0 1.25rem 1.75rem;
}
.article-body li { margin-bottom: 0.4rem; line-height: 1.65; }
.article-body strong { color: var(--r-noir); }
.article-cta-box {
  margin-top: 3rem;
  padding: 2rem 2.25rem;
  background: var(--r-os);
  border-left: 3px solid var(--r-terracotta);
}
.article-cta-box .label-mono { margin-bottom: 0.75rem; }
.article-cta-box-title { font-weight: 600; margin-bottom: 0.75rem; font-size: 1rem; }
.article-cta-box-desc { font-size: 0.9375rem; color: var(--r-pierre); margin-bottom: 1.25rem; line-height: 1.65; }

/* ==========================================================
   GEO PAGES
   ========================================================== */
.zone-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}
.zone-chip {
  font-family: var(--r-font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.9rem;
  background: var(--r-sable);
  color: var(--r-pierre);
}

/* ==========================================================
   ABOUT / ENTREPRISE
   ========================================================== */
.histoire-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--r-pierre);
  max-width: 760px;
}
.histoire-text p { margin-bottom: 1.25rem; }
.histoire-text strong { color: var(--r-noir); }
.histoire-text em { font-family: var(--r-font-italic); font-size: 1.0625rem; }

/* ==========================================================
   RESPONSIVE GRID UTILITIES
   ========================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.grid-2--center { align-items: center; }
.grid-2--gap-lg { gap: 5rem; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 900px) {
  .grid-2, .grid-2--center, .grid-2--gap-lg { grid-template-columns: 1fr; gap: 2rem; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid-3 { grid-template-columns: 1fr; }
}

/* ==========================================================
   UTILITIES
   ========================================================== */
.text-center { text-align: center; }
.text-pierre { color: var(--r-pierre); }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }
.mt-4 { margin-top: 2rem; }
.mt-6 { margin-top: 3rem; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}