/* ============================================================
   OBM – Style sobre & professionnel
   ============================================================ */

/* --- RESET & BASE ------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Palette sobre : bleu marine + gris chaud + blanc */
  --clr-primary:      #1d4ed8;
  --clr-primary-dark: #1e3a8a;
  --clr-primary-light:#eff6ff;
  --clr-accent:       #2563eb;
  --clr-dark:         #111827;
  --clr-mid:          #374151;
  --clr-text:         #6b7280;
  --clr-border:       #e5e7eb;
  --clr-light:        #f9fafb;
  --clr-white:        #ffffff;
  --clr-success:      #16a34a;

  --font-main:   'Inter', system-ui, sans-serif;

  --section-py:  5rem;
  --container:   1140px;

  --r-sm:  6px;
  --r-md:  10px;
  --r-lg:  16px;

  --sh-sm: 0 1px 4px rgba(0,0,0,0.07);
  --sh-md: 0 4px 16px rgba(0,0,0,0.09);
  --sh-lg: 0 8px 32px rgba(0,0,0,0.12);
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  color: var(--clr-dark);
  background: var(--clr-white);
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- CONTAINER --------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- BOUTONS ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: .95rem;
  transition: all .2s ease;
  cursor: pointer;
  line-height: 1;
}
.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border: 2px solid var(--clr-primary);
}
.btn-primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
}
.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: #fff;
}
.btn-white {
  background: #fff;
  color: var(--clr-primary);
  border: 2px solid #fff;
}
.btn-white:hover {
  background: var(--clr-primary-light);
  border-color: var(--clr-primary-light);
}
.btn-full { width: 100%; justify-content: center; }
.btn-sm { padding: .55rem 1.2rem; font-size: .88rem; }

/* --- SECTIONS ---------------------------------------------- */
.section { padding: var(--section-py) 0; }
.section-alt { background: var(--clr-light); }

.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 3.5rem;
}
.section-eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: .6rem;
}
.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-dark);
  margin-bottom: .9rem;
}
.section-desc {
  color: var(--clr-text);
  font-size: .98rem;
}

/* ============================================================
   HEADER & NAV
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--clr-border);
  transition: box-shadow .3s;
}
.site-header.scrolled {
  box-shadow: var(--sh-md);
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--container);
  margin: 0 auto;
}

/* Logo */
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.site-logo-img {
  height: 50px;
  width: auto;
  max-width: 230px;
  object-fit: contain;
  display: block;
}
@media (max-width: 480px) {
  .site-logo-img { height: 38px; max-width: 175px; }
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: .1rem;
}
.nav-link {
  padding: .45rem .9rem;
  border-radius: var(--r-sm);
  color: var(--clr-mid);
  font-weight: 500;
  font-size: .9rem;
  transition: all .15s;
}
.nav-link:hover { color: var(--clr-primary); background: var(--clr-primary-light); }
.nav-cta {
  background: var(--clr-primary);
  color: #fff !important;
  border-radius: var(--r-md);
  padding: .5rem 1.25rem;
  margin-left: .5rem;
  font-weight: 600;
}
.nav-cta:hover { background: var(--clr-primary-dark) !important; color: #fff !important; }

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .4rem;
  border-radius: var(--r-sm);
}
.burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-dark);
  border-radius: 2px;
  transition: all .25s;
}
.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 {
  position: relative;
  padding: 7rem 0 5rem;
  background: var(--clr-light);
  border-bottom: 1px solid var(--clr-border);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: 1.2rem;
}
.hero-label-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--clr-primary);
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--clr-dark);
  margin-bottom: 1.1rem;
  letter-spacing: -.02em;
}
.hero-title span { color: var(--clr-primary); }
.hero-subtitle {
  font-size: 1.02rem;
  color: var(--clr-text);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 480px;
}
.hero-actions { display: flex; gap: .85rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero-trust {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--clr-border);
  flex-wrap: wrap;
}
.trust-item-sm {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  color: var(--clr-text);
  font-weight: 500;
}
.trust-item-sm svg { color: var(--clr-primary); flex-shrink: 0; }

/* Hero image */
.hero-image-wrap {
  position: relative;
}
.hero-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid var(--clr-border);
  box-shadow: var(--sh-lg);
}
.hero-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  background: #fff;
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  padding: .75rem 1.1rem;
  box-shadow: var(--sh-md);
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--clr-dark);
}
.hero-badge svg { color: var(--clr-success); }

/* ============================================================
   BANDEAU TRUST
   ============================================================ */
.trust-bar {
  background: var(--clr-primary-dark);
  padding: 1.1rem 0;
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.trust-bar-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: rgba(255,255,255,.85);
  font-size: .85rem;
  font-weight: 500;
}
.trust-bar-item svg { color: #93c5fd; flex-shrink: 0; }
.trust-bar-sep { color: rgba(255,255,255,.2); }

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.service-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  transition: border-color .2s, box-shadow .2s;
}
.service-card:hover {
  border-color: var(--clr-primary);
  box-shadow: var(--sh-md);
}
.service-icon {
  width: 44px; height: 44px;
  background: var(--clr-primary-light);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  margin-bottom: 1.1rem;
}
.service-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: .5rem;
}
.service-card p {
  font-size: .88rem;
  color: var(--clr-text);
  line-height: 1.65;
}
.service-card.featured {
  border-color: var(--clr-primary);
  background: var(--clr-primary-light);
}
.service-card.featured h3 { color: var(--clr-primary-dark); }
.service-card.featured .service-icon { background: #fff; }

/* ============================================================
   PHOTO + TEXTE
   ============================================================ */
.split-section {
  padding: var(--section-py) 0;
}
.split-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.split-img {
  width: 100%;
  border-radius: var(--r-lg);
  border: 1px solid var(--clr-border);
  box-shadow: var(--sh-md);
  aspect-ratio: 4/3;
  object-fit: cover;
}
.split-text h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-dark);
  margin: .5rem 0 1rem;
  letter-spacing: -.01em;
}
.split-text > p {
  color: var(--clr-text);
  font-size: .97rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}
.check-list {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  margin-bottom: 2rem;
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .92rem;
  color: var(--clr-mid);
}
.check-icon {
  width: 20px; height: 20px;
  background: var(--clr-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: .7rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .1rem;
}

/* ============================================================
   TYPES DE FENÊTRES — ONGLETS
   ============================================================ */
.window-tabs-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-sm);
}
.window-tabs {
  display: flex;
  border-bottom: 1px solid var(--clr-border);
  background: var(--clr-light);
  overflow-x: auto;
  scrollbar-width: none;
}
.window-tabs::-webkit-scrollbar { display: none; }
.tab-btn {
  flex: 1;
  min-width: max-content;
  padding: .9rem 1.1rem;
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-text);
  transition: all .15s;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--clr-primary); }
.tab-btn.active {
  color: var(--clr-primary);
  background: var(--clr-white);
  border-bottom-color: var(--clr-primary);
}

.tab-panels { padding: 2rem; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }

.tab-panel-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
.tab-panel-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: .6rem;
}
.tab-panel-info p {
  color: var(--clr-text);
  font-size: .92rem;
  line-height: 1.7;
  margin-bottom: 1.1rem;
}
.features-list { display: flex; flex-direction: column; gap: .5rem; }
.features-list li {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .88rem;
  color: var(--clr-mid);
}
.features-list li::before { content: '✓'; color: var(--clr-primary); font-weight: 700; }

/* Specs */
.tab-panel-specs { display: flex; flex-direction: column; gap: 1rem; }
.spec-item { display: flex; align-items: center; gap: .6rem; }
.spec-label { font-size: .8rem; font-weight: 600; color: var(--clr-text); width: 80px; flex-shrink: 0; }
.spec-bar {
  flex: 1;
  height: 6px;
  background: var(--clr-border);
  border-radius: 999px;
  overflow: hidden;
}
.spec-fill {
  height: 100%;
  background: var(--clr-primary);
  border-radius: 999px;
}
.spec-fill-green { background: var(--clr-success); }
.spec-val { font-size: .78rem; color: var(--clr-text); width: 75px; text-align: right; flex-shrink: 0; }

/* ============================================================
   AVANTAGES VITRAGE
   ============================================================ */
.avantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}
.avantage-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
}
.avantage-icon {
  font-size: 1.75rem;
  margin-bottom: .75rem;
}
.avantage-card h4 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: .4rem;
}
.avantage-card p {
  font-size: .84rem;
  color: var(--clr-text);
  line-height: 1.55;
}

/* ============================================================
   SECTEUR
   ============================================================ */
.secteur-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3.5rem;
  align-items: start;
}
.secteur-map-wrap {
  position: relative;
  width: 100%;
  height: 370px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  box-shadow: var(--sh-md);
  background: var(--clr-surface);
}

.secteur-iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.map-badge-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.09);
  border-radius: var(--r-md);
  padding: .55rem .85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  font-size: .82rem;
  color: var(--clr-dark);
}

.map-badge-info {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.map-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #16a34a;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.2);
}

.map-external-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .78rem;
  font-weight: 600;
  color: var(--clr-primary);
  text-decoration: none;
  padding: .28rem .6rem;
  border-radius: var(--r-sm);
  background: var(--clr-primary-light);
  transition: all .2s;
  flex-shrink: 0;
}

.map-external-link:hover {
  background: var(--clr-primary);
  color: #fff;
}

.communes-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: 1rem;
}
.communes-grid { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.25rem; }
.commune-tag {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  padding: .3rem .9rem;
  font-size: .83rem;
  color: var(--clr-mid);
}
.commune-tag:first-child {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
  font-weight: 600;
}
.secteur-note {
  background: var(--clr-primary-light);
  border: 1px solid #bfdbfe;
  border-radius: var(--r-md);
  padding: .85rem 1rem;
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .84rem;
  color: var(--clr-primary-dark);
}
.secteur-note svg { flex-shrink: 0; color: var(--clr-primary); margin-top: .1rem; }

/* ============================================================
   AIDES FINANCIÈRES
   ============================================================ */
.aides-section {
  background: var(--clr-primary-dark);
  padding: var(--section-py) 0;
}
.aides-section .section-eyebrow { color: #93c5fd; }
.aides-section .section-title { color: #fff; }
.aides-section .section-desc { color: rgba(255,255,255,.65); }
.aides-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.aide-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  color: #fff;
  transition: background .2s;
}
.aide-card:hover { background: rgba(255,255,255,.12); }
.aide-logo { font-size: 1.75rem; margin-bottom: .6rem; }
.aide-card h3 { font-size: .95rem; font-weight: 700; margin-bottom: .5rem; }
.aide-card p { font-size: .83rem; color: rgba(255,255,255,.65); line-height: 1.55; margin-bottom: .85rem; }
.aide-montant {
  font-size: .82rem;
  font-weight: 700;
  color: #93c5fd;
  padding: .35rem .7rem;
  background: rgba(255,255,255,.08);
  border-radius: var(--r-sm);
  display: inline-block;
}
.aides-note {
  text-align: center;
  color: rgba(255,255,255,.5);
  font-size: .83rem;
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.5rem;
}

/* ============================================================
   CONTACT / DEVIS
   ============================================================ */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3.5rem;
  align-items: start;
}
.contact-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: 1.5rem;
}
.contact-item {
  display: flex;
  gap: .85rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--clr-border);
}
.contact-item:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.contact-icon {
  width: 38px; height: 38px;
  background: var(--clr-primary-light);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  flex-shrink: 0;
}
.contact-label { font-size: .73rem; text-transform: uppercase; letter-spacing: .07em; font-weight: 600; color: var(--clr-text); display: block; margin-bottom: .15rem; }
.contact-value { font-size: .92rem; font-weight: 600; color: var(--clr-dark); }
a.contact-value:hover { color: var(--clr-primary); }
.contact-promise {
  margin-top: 1.5rem;
  padding: .85rem 1rem;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  font-weight: 600;
  color: #166534;
}
.contact-promise svg { color: var(--clr-success); }

/* Formulaire */
.contact-form {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: 2rem;
  box-shadow: var(--sh-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; }
.form-group { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }
.form-group label { font-size: .82rem; font-weight: 600; color: var(--clr-mid); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: .65rem .9rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-sm);
  font-family: var(--font-main);
  font-size: .92rem;
  color: var(--clr-dark);
  background: var(--clr-white);
  transition: border-color .15s;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--clr-primary); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-check {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  margin-bottom: 1.25rem;
}
.form-check input { width: 16px; height: 16px; flex-shrink: 0; margin-top: .2rem; accent-color: var(--clr-primary); cursor: pointer; }
.form-check label { font-size: .8rem; color: var(--clr-text); line-height: 1.5; }
.form-check a { color: var(--clr-primary); text-decoration: underline; }
.form-success {
  display: none;
  align-items: center;
  gap: .6rem;
  margin-top: 1rem;
  padding: .85rem 1rem;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--r-md);
  color: #166534;
  font-weight: 600;
  font-size: .88rem;
}
.form-success.show { display: flex; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--clr-dark);
  padding: 3.5rem 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-logo { display: flex; align-items: center; gap: .6rem; margin-bottom: 1rem; }
.footer-logo .logo-abbr { font-size: 1.5rem; }
.footer-logo-text { color: rgba(255,255,255,.7); font-weight: 600; font-size: .85rem; }
.footer-desc { color: rgba(255,255,255,.45); font-size: .84rem; line-height: 1.65; margin-bottom: 1rem; }
.footer-links h4 { color: rgba(255,255,255,.8); font-weight: 600; font-size: .88rem; margin-bottom: .85rem; }
.footer-links ul { display: flex; flex-direction: column; gap: .5rem; }
.footer-links a { color: rgba(255,255,255,.45); font-size: .84rem; transition: color .15s; }
.footer-links a:hover { color: rgba(255,255,255,.85); }
.footer-contact h4 { color: rgba(255,255,255,.8); font-weight: 600; font-size: .88rem; margin-bottom: .85rem; }
.footer-contact p, .footer-contact a { color: rgba(255,255,255,.45); font-size: .84rem; line-height: 1.8; display: block; transition: color .15s; }
.footer-contact a:hover { color: rgba(255,255,255,.85); }

.footer-bottom {
  padding: 1.25rem 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
}
.footer-bottom p { color: rgba(255,255,255,.3); font-size: .78rem; }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 42px; height: 42px;
  background: var(--clr-primary);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--sh-md);
  opacity: 0;
  transition: opacity .2s, transform .2s;
  pointer-events: none;
  z-index: 900;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { background: var(--clr-primary-dark); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .aides-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .avantages-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-image-wrap { order: -1; }
  .hero-img { aspect-ratio: 16/9; }
  .split-inner { grid-template-columns: 1fr; gap: 2rem; }
  .secteur-inner { grid-template-columns: 1fr; gap: 2rem; }
  .contact-wrapper { grid-template-columns: 1fr; gap: 2rem; }
  .tab-panel-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }
  .navbar { padding: .85rem 1.25rem; }
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--clr-white);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.25rem;
    z-index: 999;
    border-top: 1px solid var(--clr-border);
  }
  .nav-links.open { display: flex; }
  .nav-link { font-size: 1.2rem; }
  .burger { display: flex; z-index: 1000; }
  .services-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .trust-bar-sep { display: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .avantages-grid { grid-template-columns: 1fr; }
  .aides-grid { grid-template-columns: 1fr; }
  .hero-badge { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .tab-btn { font-size: .8rem; padding: .75rem .4rem; }
  .secteur-map-wrap { height: 320px; }
  .map-badge-overlay { flex-direction: column; align-items: flex-start; gap: .4rem; padding: .5rem .75rem; }
}