/* ═══════════════════════════════════════════════════════════════════
   CLIM R INDUSTRIE — Modern Responsive Stylesheet
   ═══════════════════════════════════════════════════════════════════ */

/* ── Custom properties ─────────────────────────────────────────────── */
:root {
  --blue-dark:   #1A3A6B;
  --blue-mid:    #2563EB;
  --blue-light:  #5BB8F5;
  --blue-pale:   #E8F4FD;
  --gray-text:   #4B5563;
  --gray-light:  #F8FAFC;
  --gray-border: #E2E8F0;
  --white:       #FFFFFF;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:   0 4px 16px rgba(26,58,107,.10);
  --shadow-lg:   0 10px 40px rgba(26,58,107,.15);
  --radius:      12px;
  --radius-lg:   20px;
  --transition:  .25s cubic-bezier(.4,0,.2,1);
  --container:   1200px;
  --header-h:    72px;
  font-size: 16px;
}

/* ── Reset ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--gray-text);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }

/* ── Utilities ─────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section         { padding: 96px 0; }
.section--alt    { background: var(--gray-light); }

.section-label {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue-mid);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  color: var(--blue-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-sub {
  max-width: 560px;
  color: var(--gray-text);
  font-size: 1.05rem;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.accent { color: var(--blue-light); }

/* ── Buttons ───────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--blue-mid);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(37,99,235,.35);
}
.btn--primary:hover { background: #1D4ED8; box-shadow: 0 6px 20px rgba(37,99,235,.45); }

.btn--outline {
  border-color: rgba(255,255,255,.8);
  color: var(--white);
}
.btn--outline:hover { background: rgba(255,255,255,.1); }

.btn--ghost {
  border-color: var(--blue-mid);
  color: var(--blue-mid);
}
.btn--ghost:hover { background: var(--blue-pale); }

.btn--full { width: 100%; justify-content: center; }

/* ═══════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-border);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon { width: 44px; height: 44px; }
.logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--blue-dark);
  letter-spacing: -.02em;
}
.logo-text strong { color: var(--blue-mid); }
.logo-text span   { color: var(--blue-light); font-weight: 400; }
.logo-text--light { color: var(--white); }
.logo-text--light strong { color: var(--blue-light); }
.logo-text--light span   { color: rgba(255,255,255,.7); }

/* Nav */
.nav__list {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav__link {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--blue-dark);
  transition: background var(--transition), color var(--transition);
}
.nav__link:hover { background: var(--blue-pale); color: var(--blue-mid); }
.nav__link--cta {
  background: var(--blue-mid);
  color: var(--white) !important;
  padding: 9px 18px;
}
.nav__link--cta:hover { background: #1D4ED8 !important; }

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--blue-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--blue-dark) 0%, #0F2552 50%, #132D5E 100%);
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

.hero__bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(91,184,245,.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(37,99,235,.15) 0%, transparent 40%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 660px;
  padding-top: 48px;
  padding-bottom: 80px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: rgba(91,184,245,.15);
  border: 1px solid rgba(91,184,245,.3);
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--blue-light);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero__desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 60px;
}

.hero__stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.stat strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}
.stat span {
  font-size: .82rem;
  color: rgba(255,255,255,.55);
  margin-top: 4px;
  display: block;
}

/* Decorative duct animation */
.hero__visual {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  opacity: .12;
  pointer-events: none;
}
.duct-anim { display: flex; flex-direction: column; gap: 20px; }
.duct {
  background: var(--blue-light);
  border-radius: 4px;
  animation: ductPulse 3s ease-in-out infinite;
}
.duct--rect    { width: 480px; height: 80px; }
.duct--circ    { width: 200px; height: 200px; border-radius: 50%; }
.duct--sm      { width: 320px; height: 50px; animation-delay: .5s; }
@keyframes ductPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .6; }
}

/* ═══════════════════════════════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════════════════════════════ */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about__text .section-title { margin-bottom: 20px; }
.about__text p {
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.75;
}
.about__text .btn { margin-top: 8px; }
.about__cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.info-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.info-card__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: var(--blue-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-mid);
}
.info-card__icon svg { width: 20px; height: 20px; }
.info-card h3 { font-size: 1rem; font-weight: 700; color: var(--blue-dark); margin-bottom: 4px; }
.info-card p  { font-size: .9rem; line-height: 1.55; }

/* ═══════════════════════════════════════════════════════════════════
   PRODUCTS
   ═══════════════════════════════════════════════════════════════════ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-card--featured {
  border-color: var(--blue-mid);
  box-shadow: 0 0 0 2px rgba(37,99,235,.2), var(--shadow-md);
}

.product-card__badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--blue-mid);
  color: var(--white);
  font-size: .72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.product-card__img {
  background: linear-gradient(135deg, var(--blue-pale) 0%, #D1E9FA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  min-height: 160px;
}
.product-card__img svg { width: 100%; max-width: 200px; }

.product-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card__body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 8px;
}
.product-card__body p {
  font-size: .9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}
.product-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
  margin-top: auto;
}
.product-card__features li {
  background: var(--blue-pale);
  color: var(--blue-dark);
  font-size: .78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
}

/* ═══════════════════════════════════════════════════════════════════
   MATERIALS
   ═══════════════════════════════════════════════════════════════════ */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.material-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.material-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.material-card__color {
  height: 8px;
}
.material-card__color--galva { background: linear-gradient(90deg, #9CA3AF, #D1D5DB, #9CA3AF); }
.material-card__color--inox  { background: linear-gradient(90deg, #6B7280, #E5E7EB, #6B7280); }
.material-card__color--alu   { background: linear-gradient(90deg, #93C5FD, #BFDBFE, #93C5FD); }

.material-card__body { padding: 28px; }
.material-card__body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 10px;
}
.material-card__body p {
  font-size: .92rem;
  line-height: 1.65;
  margin-bottom: 16px;
}
.material-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.material-tags span {
  font-size: .78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--blue-pale);
  color: var(--blue-mid);
}

/* ═══════════════════════════════════════════════════════════════════
   SECTORS
   ═══════════════════════════════════════════════════════════════════ */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.sector-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 28px 20px;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
  cursor: default;
}
.sector-item:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.sector-item:hover .sector-item__icon { background: rgba(91,184,245,.2); color: var(--blue-light); }
.sector-item:hover h4 { color: var(--white); }

.sector-item__icon {
  width: 52px; height: 52px;
  background: var(--blue-pale);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-mid);
  transition: background var(--transition), color var(--transition);
}
.sector-item__icon svg { width: 22px; height: 22px; }
.sector-item h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--blue-dark);
  transition: color var(--transition);
}

/* ═══════════════════════════════════════════════════════════════════
   WHY US
   ═══════════════════════════════════════════════════════════════════ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-item {
  padding: 32px 24px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--gray-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.why-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.why-item__num {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--blue-pale);
  line-height: 1;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
.why-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 8px;
}
.why-item p { font-size: .9rem; line-height: 1.65; }

/* ═══════════════════════════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════════════════════════ */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}
.contact__info p {
  font-size: 1.02rem;
  line-height: 1.75;
  margin-bottom: 32px;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-details li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.contact-details__icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: var(--blue-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-mid);
}
.contact-details__icon svg { width: 18px; height: 18px; }
.contact-details li strong {
  display: block;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--blue-dark);
  margin-bottom: 2px;
}
.contact-details li span,
.contact-details li a {
  font-size: .95rem;
  color: var(--gray-text);
  transition: color var(--transition);
}
.contact-details li a:hover { color: var(--blue-mid); }

/* Form */
.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--blue-dark);
  letter-spacing: .02em;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1.5px solid var(--gray-border);
  border-radius: 8px;
  background: var(--gray-light);
  color: var(--blue-dark);
  font-size: .95rem;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #A0AEC0; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-mid);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-success {
  background: #ECFDF5;
  border: 1px solid #6EE7B7;
  color: #065F46;
  padding: 14px 18px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
}

/* ═══════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════ */
.footer {
  background: var(--blue-dark);
  color: rgba(255,255,255,.7);
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-top: 64px;
  padding-bottom: 48px;
}
.footer__brand p {
  font-size: .9rem;
  line-height: 1.65;
  margin-top: 16px;
  max-width: 280px;
}
.footer__col h4 {
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--white);
  margin-bottom: 16px;
}
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col ul a {
  font-size: .9rem;
  transition: color var(--transition);
}
.footer__col ul a:hover { color: var(--blue-light); }
.footer__col--contact address {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: .9rem;
}
.footer__col--contact a { transition: color var(--transition); }
.footer__col--contact a:hover { color: var(--blue-light); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  text-align: center;
  font-size: .85rem;
}

/* ═══════════════════════════════════════════════════════════════════
   SPEC TABLE (inside product cards)
   ═══════════════════════════════════════════════════════════════════ */
.spec-table {
  background: var(--gray-light);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .82rem;
  border-bottom: 1px solid var(--gray-border);
  padding-bottom: 5px;
}
.spec-row:last-child { border-bottom: none; padding-bottom: 0; }
.spec-row span { color: var(--gray-text); }
.spec-row strong { color: var(--blue-dark); font-weight: 700; }

/* ═══════════════════════════════════════════════════════════════════
   TIGHTNESS (classes d'étanchéité)
   ═══════════════════════════════════════════════════════════════════ */
.tightness-section {
  margin-top: 56px;
  padding-top: 48px;
  border-top: 1px solid var(--gray-border);
}
.tightness-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--blue-dark);
  text-align: center;
  margin-bottom: 24px;
}
.tightness-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.tightness-card {
  padding: 20px;
  border-radius: var(--radius);
  border-left: 4px solid transparent;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-left-width: 4px;
}
.tightness-card strong {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 6px;
}
.tightness-card span { font-size: .83rem; line-height: 1.5; }
.tightness-card--a { border-left-color: #86EFAC; }
.tightness-card--a strong { color: #166534; }
.tightness-card--b { border-left-color: var(--blue-light); }
.tightness-card--b strong { color: var(--blue-mid); }
.tightness-card--c { border-left-color: #FCD34D; }
.tightness-card--c strong { color: #92400E; }
.tightness-card--d { border-left-color: #F87171; }
.tightness-card--d strong { color: #991B1B; }

/* ═══════════════════════════════════════════════════════════════════
   MATERIAL LIST
   ═══════════════════════════════════════════════════════════════════ */
.material-list {
  list-style: none;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.material-list li {
  font-size: .85rem;
  padding-left: 16px;
  position: relative;
  color: var(--gray-text);
  line-height: 1.5;
}
.material-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--blue-light);
  font-size: .75rem;
  top: 1px;
}

/* ═══════════════════════════════════════════════════════════════════
   PROCESS
   ═══════════════════════════════════════════════════════════════════ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 52px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-light), var(--blue-mid));
  z-index: 0;
}
.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 16px;
  position: relative;
  z-index: 1;
}
.process-step__num {
  font-size: .72rem;
  font-weight: 800;
  color: var(--blue-mid);
  letter-spacing: .1em;
  margin-bottom: 4px;
}
.process-step__icon {
  width: 56px;
  height: 56px;
  background: var(--white);
  border: 2px solid var(--blue-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-mid);
  margin-bottom: 20px;
  box-shadow: var(--shadow-md);
}
.process-step__icon svg { width: 22px; height: 22px; }
.process-step h3 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 8px;
}
.process-step p { font-size: .84rem; line-height: 1.6; }

/* ═══════════════════════════════════════════════════════════════════
   FAQ
   ═══════════════════════════════════════════════════════════════════ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item[open] {
  box-shadow: var(--shadow-md);
  border-color: var(--blue-light);
}
.faq-item__question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  font-size: .98rem;
  font-weight: 700;
  color: var(--blue-dark);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition);
}
.faq-item__question::-webkit-details-marker { display: none; }
.faq-item[open] .faq-item__question { background: var(--blue-pale); }
.faq-item__question:hover { background: var(--blue-pale); }
.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--blue-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: transform var(--transition), background var(--transition);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--blue-mid);
  border-radius: 2px;
}
.faq-icon::before { width: 10px; height: 2px; }
.faq-icon::after  { width: 2px;  height: 10px; transition: transform var(--transition); }
.faq-item[open] .faq-icon::after { transform: rotate(90deg); opacity: 0; }
.faq-item[open] .faq-icon { background: var(--blue-mid); }
.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after { background: var(--white); }

.faq-item__answer {
  padding: 0 24px 20px;
  border-top: 1px solid var(--gray-border);
}
.faq-item__answer p,
.faq-item__answer li { font-size: .93rem; line-height: 1.7; }
.faq-item__answer p + p { margin-top: 10px; }
.faq-item__answer ul {
  list-style: disc;
  padding-left: 20px;
  margin: 10px 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ═══════════════════════════════════════════════════════════════════
   GOOGLE MAPS
   ═══════════════════════════════════════════════════════════════════ */
.map-container {
  margin-top: 28px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--gray-border);
  box-shadow: var(--shadow-sm);
}
.map-container iframe { display: block; }

/* ═══════════════════════════════════════════════════════════════════
   FORM TITLE
   ═══════════════════════════════════════════════════════════════════ */
.form-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 4px;
}

/* ═══════════════════════════════════════════════════════════════════
   FOOTER EXTRAS
   ═══════════════════════════════════════════════════════════════════ */
.footer__cert {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.footer__cert span {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid rgba(91,184,245,.4);
  color: var(--blue-light);
}
.footer__hours {
  font-size: .85rem;
  color: rgba(255,255,255,.5);
}
.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer__bottom-meta { font-size: .8rem; opacity: .5; }

/* ══ Responsive process ─────────────────────────────────────────── */
@media (max-width: 960px) {
  .process-steps { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-steps::before { display: none; }
  .tightness-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .process-steps { grid-template-columns: 1fr; }
  .tightness-grid { grid-template-columns: 1fr; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }
}

/* ═══════════════════════════════════════════════════════════════════
   GALLERY
   ═══════════════════════════════════════════════════════════════════ */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 36px;
}
.gallery-filter {
  padding: 9px 20px;
  border-radius: 100px;
  border: 1.5px solid var(--gray-border);
  background: var(--white);
  color: var(--gray-text);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.gallery-filter:hover { border-color: var(--blue-mid); color: var(--blue-mid); }
.gallery-filter.active {
  background: var(--blue-mid);
  border-color: var(--blue-mid);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(37,99,235,.3);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 300px;
  gap: 16px;
}
.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: zoom-in;
}
.gallery-item--wide { grid-column: span 2; }
.gallery-item--tall { grid-row: span 2; }

.gallery-item__inner {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  background: #F1F5F9;
  border-radius: var(--radius);
  border: 1px solid var(--gray-border);
  transition: box-shadow var(--transition);
}
.gallery-item:hover .gallery-item__inner {
  box-shadow: 0 8px 30px rgba(26,58,107,.18);
}

.gallery-item__inner img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform .4s cubic-bezier(.4,0,.2,1);
}
.gallery-item:hover .gallery-item__inner img { transform: scale(1.04); }

/* Caption overlay */
.gallery-item__caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 48px 14px 12px;
  background: linear-gradient(to top, rgba(15,37,82,.9) 0%, transparent 100%);
  color: var(--white);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition);
  border-radius: 0 0 var(--radius) var(--radius);
}
.gallery-item:hover .gallery-item__caption { opacity: 1; transform: none; }
.gallery-item__caption strong { display: block; font-size: .9rem; font-weight: 700; }
.gallery-item__caption span   { font-size: .78rem; opacity: .8; }

/* Always show caption on touch devices */
@media (hover: none) {
  .gallery-item__caption { opacity: 1; transform: none; }
}

/* Hidden by filter */
.gallery-item.hidden { display: none; }

/* ═══════════════════════════════════════════════════════════════════
   LIGHTBOX
   ═══════════════════════════════════════════════════════════════════ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(8,16,40,.96);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 72px 48px;
  opacity: 0;
  transition: opacity .22s ease;
}
.lightbox[hidden] { display: none; }
.lightbox.lb-open { opacity: 1; }

.lightbox__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: min(88vw, 680px);
  max-height: calc(100vh - 120px);
}
.lightbox__content img {
  max-width: 100%;
  max-height: calc(100vh - 180px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 24px 64px rgba(0,0,0,.6);
  display: block;
  transition: opacity .18s ease;
  background: #F1F5F9;
}
.lightbox__caption {
  text-align: center;
  color: rgba(255,255,255,.9);
}
.lightbox__caption strong { display: block; font-size: 1rem; font-weight: 700; }
.lightbox__caption span   { font-size: .82rem; opacity: .65; }

.lightbox__close {
  position: fixed;
  top: 14px;
  right: 14px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 9001;
}
.lightbox__close:hover { background: rgba(255,255,255,.25); transform: rotate(90deg); }
.lightbox__close svg { width: 18px; height: 18px; }

.lightbox__nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  z-index: 9001;
}
.lightbox__nav:hover { background: rgba(255,255,255,.25); }
.lightbox__nav--prev { left: 12px; }
.lightbox__nav--prev:hover { transform: translateY(-50%) translateX(-2px); }
.lightbox__nav--next { right: 12px; }
.lightbox__nav--next:hover { transform: translateY(-50%) translateX(2px); }
.lightbox__nav svg { width: 22px; height: 22px; }

.lightbox__counter {
  position: fixed;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.55);
  font-size: .8rem;
  font-weight: 600;
  background: rgba(0,0,0,.35);
  padding: 5px 14px;
  border-radius: 100px;
  letter-spacing: .04em;
}

@media (max-width: 640px) {
  .lightbox { padding: 52px 8px 40px; }
  .lightbox__nav { width: 40px; height: 40px; }
  .lightbox__nav svg { width: 18px; height: 18px; }
  .lightbox__nav--prev { left: 6px; }
  .lightbox__nav--next { right: 6px; }
  .lightbox__content { max-width: 96vw; }
  .lightbox__content img { max-height: calc(100vh - 150px); }
}

/* ═══════════════════════════════════════════════════════════════════
   CONTACT FULL (sans formulaire)
   ═══════════════════════════════════════════════════════════════════ */
.contact__inner { grid-template-columns: 1fr; }   /* override old 2-col */
.contact-full { display: flex; flex-direction: column; gap: 32px; }

.contact-cta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.contact-cta-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 22px;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.contact-cta-card:not(.contact-cta-card--no-link):hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--blue-mid);
}
.contact-cta-card__icon {
  width: 52px; height: 52px;
  flex-shrink: 0;
  background: var(--blue-pale);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-mid);
}
.contact-cta-card__icon svg { width: 22px; height: 22px; }
.contact-cta-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-cta-card__body strong {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--blue-dark);
}
.contact-cta-card__body span {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-mid);
}
.contact-cta-card__body small { font-size: .8rem; color: var(--gray-text); }
.contact-cta-card__arrow {
  font-size: 1.3rem;
  color: var(--blue-light);
  transition: transform var(--transition);
}
.contact-cta-card:hover .contact-cta-card__arrow { transform: translateX(4px); }

.map-container--full { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--gray-border); }
.map-container--full iframe { display: block; }

/* ══ Gallery responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .gallery-grid { grid-auto-rows: 260px; }
}
@media (max-width: 960px) {
  .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 240px; }
  .gallery-item--wide { grid-column: span 2; }
  .gallery-item--tall { grid-row: span 1; }
  .contact-cta-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 190px; gap: 10px; }
  .gallery-item--wide { grid-column: span 2; }
  .gallery-item--tall { grid-row: span 1; }
}
@media (max-width: 420px) {
  .gallery-grid { grid-template-columns: 1fr; grid-auto-rows: 280px; }
  .gallery-item--wide,
  .gallery-item--tall { grid-column: span 1; grid-row: span 1; }
}

/* ── Scroll reveal ────────────────────────────────────────────────── */
.reveal-target {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal-target.revealed {
  opacity: 1;
  transform: none;
}

/* ── Active nav link ──────────────────────────────────────────────── */
.nav__link.active { color: var(--blue-mid); background: var(--blue-pale); }

/* ── Back to top ──────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--blue-mid);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(37,99,235,.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-3px); }
.back-to-top svg { width: 20px; height: 20px; }

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE — Tablet (≤ 960px)
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 960px) {
  .nav { display: none; position: absolute; top: var(--header-h); left: 0; right: 0;
    background: var(--white); border-bottom: 1px solid var(--gray-border);
    box-shadow: var(--shadow-md); padding: 12px 24px 24px; }
  .nav.open { display: block; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav__link { display: block; padding: 12px 14px; }
  .nav__link--cta { text-align: center; margin-top: 8px; }
  .burger { display: flex; }

  .about__inner          { grid-template-columns: 1fr; gap: 40px; }
  .product-grid          { grid-template-columns: 1fr 1fr; }
  .materials-grid        { grid-template-columns: 1fr 1fr; }
  .sectors-grid          { grid-template-columns: repeat(4, 1fr); }
  .why-grid              { grid-template-columns: 1fr 1fr; }
  .contact__inner        { grid-template-columns: 1fr; }
  .footer__inner         { grid-template-columns: 1fr 1fr; gap: 32px; }
}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile (≤ 640px)
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root { --header-h: 64px; }
  .section { padding: 64px 0; }

  .hero__content { padding-top: 32px; padding-bottom: 64px; }
  .hero__stats   { gap: 24px; }

  .product-grid   { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: 1fr; }
  .sectors-grid   { grid-template-columns: 1fr 1fr; }
  .why-grid       { grid-template-columns: 1fr; }
  .form-row       { grid-template-columns: 1fr; }
  .contact-form   { padding: 24px; }

  .footer__inner  { grid-template-columns: 1fr; gap: 28px; }
  .footer__brand  { grid-column: 1; }
}