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

:root {
  --gris-anthracite: #4A4A4A;
  --gris-fonce: #333333;
  --gris-moyen: #5C5C5C;
  --gris-clair: #F5F5F5;
  --gris-border: #E0E0E0;
  --blanc: #FFFFFF;
  --vert-dpe: #1B8C3D;
  --jaune-dpe: #E8C829;
  --rouge-dpe: #C0392B;
  --accent: #1B8C3D;
  --accent-hover: #157A32;
  --gradient-dpe: linear-gradient(90deg, #1B8C3D 0%, #5CB85C 25%, #E8C829 50%, #E8A029 75%, #C0392B 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--gris-fonce);
  line-height: 1.7;
  background: var(--blanc);
}

h1, h2, h3, h4 { line-height: 1.25; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gris-border);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-md); }

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-logo { display: flex; align-items: center; gap: 12px; }
.navbar-logo img { height: 50px; width: auto; }
.navbar-logo span { font-weight: 700; font-size: 1.1rem; color: var(--gris-anthracite); }

.nav-links { display: flex; gap: 8px; list-style: none; }
.nav-links a {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--gris-moyen);
  transition: all var(--transition);
}
.nav-links a:hover {
  color: var(--gris-anthracite);
  background: var(--gris-clair);
}
.nav-links a.active {
  color: var(--accent);
  background: rgba(27,140,61,0.08);
  font-weight: 600;
}

.nav-cta {
  background: var(--accent) !important;
  color: var(--blanc) !important;
  font-weight: 600 !important;
  padding: 10px 20px !important;
}
.nav-cta:hover { background: var(--accent-hover) !important; }
.nav-cta.active { background: var(--accent-hover) !important; color: var(--blanc) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 26px;
  height: 2.5px;
  background: var(--gris-anthracite);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== PAGE HEADER (toutes pages sauf accueil) ========== */
.page-header {
  padding: 140px 24px 60px;
  background: linear-gradient(170deg, var(--gris-clair) 0%, var(--blanc) 70%);
  text-align: center;
  position: relative;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-dpe);
}
.page-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--gris-anthracite);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.page-header .subtitle {
  color: var(--gris-moyen);
  font-size: 1.05rem;
  max-width: 700px;
  margin: 0 auto;
}

/* ========== HERO (accueil) ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: linear-gradient(170deg, var(--gris-clair) 0%, var(--blanc) 50%);
  position: relative;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-dpe);
}

.hero-content { max-width: 750px; }
.hero-logo { width: 200px; margin: 0 auto 32px; }
.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--gris-anthracite);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.hero .tagline {
  font-size: 1.1rem;
  color: var(--gris-moyen);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 24px;
  font-weight: 500;
}
.hero p.intro {
  font-size: 1.15rem;
  color: var(--gris-moyen);
  max-width: 600px;
  margin: 0 auto 40px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--blanc);
  box-shadow: 0 4px 14px rgba(27,140,61,0.3);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 20px rgba(27,140,61,0.4);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--gris-anthracite);
  border: 2px solid var(--gris-border);
  margin-left: 12px;
}
.btn-outline:hover {
  border-color: var(--gris-anthracite);
  background: var(--gris-clair);
}

/* ========== SECTIONS ========== */
section { padding: 80px 0; }
section.alt-bg { background: var(--gris-clair); }

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 60px;
}
.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gris-anthracite);
  margin-bottom: 16px;
}
.section-header .dpe-bar {
  width: 80px;
  height: 4px;
  background: var(--gradient-dpe);
  margin: 0 auto 20px;
  border-radius: 2px;
}
.section-header p {
  color: var(--gris-moyen);
  font-size: 1.05rem;
}

/* ========== ENGAGEMENTS (cards) ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  background: var(--blanc);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gris-border);
  transition: all var(--transition);
  text-align: center;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
  background: rgba(27,140,61,0.08);
  color: var(--accent);
}
.card h3 {
  font-size: 1.15rem;
  color: var(--gris-anthracite);
  margin-bottom: 12px;
}
.card p {
  color: var(--gris-moyen);
  font-size: 0.95rem;
}

/* ========== REASSURANCE BAR ========== */
.reassurance {
  background: var(--gris-anthracite);
  padding: 28px 0;
  text-align: center;
}
.reassurance-items {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.reassurance-items span {
  color: rgba(255,255,255,0.9);
  font-size: 0.92rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}
.reassurance-items .ico { color: var(--vert-dpe); font-size: 1.1rem; }

/* ========== DIAGNOSTICS ========== */
.diag-intro {
  max-width: 800px;
  margin: 0 auto 50px;
  text-align: center;
}
.diag-intro p {
  font-size: 1.05rem;
  color: var(--gris-moyen);
}

.diag-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.diag-item {
  background: var(--blanc);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  border: 1px solid var(--gris-border);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all var(--transition);
}
.diag-item:hover { box-shadow: var(--shadow-sm); border-color: #ccc; }
.diag-badge {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(27,140,61,0.08);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.8rem;
}
.diag-item h4 {
  font-size: 1rem;
  color: var(--gris-anthracite);
  margin-bottom: 4px;
}
.diag-item p { font-size: 0.9rem; color: var(--gris-moyen); }

/* ========== REGLEMENTATION BOX ========== */
.reglement-box {
  max-width: 800px;
  margin: 50px auto 0;
  background: var(--blanc);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 28px 32px;
  box-shadow: var(--shadow-sm);
}
.reglement-box h3 {
  color: var(--gris-anthracite);
  margin-bottom: 12px;
  font-size: 1.1rem;
}
.reglement-box p { color: var(--gris-moyen); font-size: 0.95rem; }

/* ========== OBLIGATIONS TABLE ========== */
.obligations-section { overflow-x: auto; }

.table-wrapper { margin-bottom: 50px; }
.table-wrapper h3 {
  font-size: 1.3rem;
  color: var(--gris-anthracite);
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
}

table.styled {
  width: 100%;
  border-collapse: collapse;
  background: var(--blanc);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  font-size: 0.92rem;
}
table.styled thead th {
  background: var(--gris-anthracite);
  color: var(--blanc);
  padding: 14px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
table.styled tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--gris-border);
  color: var(--gris-fonce);
}
table.styled tbody tr:nth-child(even) { background: var(--gris-clair); }
table.styled tbody tr:hover { background: rgba(27,140,61,0.04); }
table.styled .diag-name { font-weight: 600; color: var(--gris-anthracite); }
.badge-oui {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(27,140,61,0.1);
  color: var(--vert-dpe);
}
.badge-non {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--gris-clair);
  color: #999;
}

/* ========== SYNDICS CARDS ========== */
.syndic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.syndic-card {
  background: var(--blanc);
  border-radius: var(--radius-sm);
  padding: 28px;
  border: 1px solid var(--gris-border);
  transition: all var(--transition);
}
.syndic-card:hover { box-shadow: var(--shadow-sm); }
.syndic-card h4 {
  color: var(--gris-anthracite);
  font-size: 1rem;
  margin-bottom: 8px;
}
.syndic-card p { color: var(--gris-moyen); font-size: 0.9rem; }

/* ========== VALIDITES (liste durées de validité) ========== */
.validity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-top: 30px;
}
.validity-item {
  background: var(--blanc);
  border: 1px solid var(--gris-border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
}
.validity-item h4 {
  font-size: 0.98rem;
  color: var(--gris-anthracite);
  margin-bottom: 6px;
}
.validity-item p {
  font-size: 0.9rem;
  color: var(--gris-moyen);
}

/* ========== TARIFS ========== */
.tarifs-intro {
  max-width: 700px;
  margin: 0 auto 40px;
  text-align: center;
}
.tarifs-intro p { color: var(--gris-moyen); font-size: 1.05rem; }

.tarifs-note {
  max-width: 700px;
  margin: 0 auto 20px;
  text-align: center;
  color: var(--gris-moyen);
  font-size: 0.88rem;
  font-style: italic;
}

.tarif-block { margin-bottom: 50px; }
.tarif-block h3 {
  font-size: 1.2rem;
  color: var(--gris-anthracite);
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
}

table.tarifs {
  width: 100%;
  border-collapse: collapse;
  background: var(--blanc);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  font-size: 0.88rem;
  margin-bottom: 16px;
}
table.tarifs thead th {
  background: var(--gris-anthracite);
  color: var(--blanc);
  padding: 12px 14px;
  text-align: center;
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
table.tarifs thead th:first-child { text-align: left; }
table.tarifs tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--gris-border);
  text-align: center;
  color: var(--gris-fonce);
}
table.tarifs tbody td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--gris-anthracite);
}
table.tarifs tbody tr:nth-child(even) { background: var(--gris-clair); }
table.tarifs tbody tr:hover { background: rgba(27,140,61,0.04); }
table.tarifs .prix { font-weight: 600; }
table.tarifs .sur-devis {
  color: var(--accent);
  font-weight: 700;
  font-style: italic;
}

.tarifs-supplements {
  max-width: 700px;
  margin: 0 auto 40px;
  font-size: 0.88rem;
  color: var(--gris-moyen);
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  background: var(--gris-clair);
  border-radius: var(--radius-sm);
}
.tarifs-supplements span { display: flex; align-items: center; gap: 8px; }
.tarifs-supplements .ico { color: var(--gris-anthracite); }

/* Pack details */
.packs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}
.pack-card {
  background: var(--blanc);
  border: 1px solid var(--gris-border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}
.pack-card:hover { box-shadow: var(--shadow-sm); border-color: #ccc; }
.pack-card.featured {
  border-color: var(--accent);
  border-width: 2px;
}
.pack-card .pack-num {
  display: inline-block;
  background: var(--gris-anthracite);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.pack-card.featured .pack-num { background: var(--accent); }
.pack-card h4 { font-size: 0.92rem; color: var(--gris-anthracite); margin-bottom: 8px; }
.pack-card p { font-size: 0.82rem; color: var(--gris-moyen); line-height: 1.5; }
.pack-card .pack-diags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  margin-top: 10px;
}
.pack-card .diag-tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 600;
}
.diag-tag.included { background: rgba(27,140,61,0.1); color: var(--vert-dpe); }
.diag-tag.not-included { background: var(--gris-clair); color: #bbb; text-decoration: line-through; }

/* ========== A PROPOS ========== */
.apropos-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  align-items: start;
}
.apropos-photo {
  text-align: center;
}
.apropos-photo img {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  aspect-ratio: 3/4;
  margin-bottom: 16px;
}
.apropos-photo .name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gris-anthracite);
}
.apropos-photo .role {
  font-size: 0.92rem;
  color: var(--accent);
  font-weight: 500;
}

.apropos-text h3 {
  font-size: 1.2rem;
  color: var(--gris-anthracite);
  margin-bottom: 16px;
  margin-top: 32px;
}
.apropos-text h3:first-child { margin-top: 0; }
.apropos-text p {
  color: var(--gris-moyen);
  margin-bottom: 16px;
  font-size: 0.98rem;
}

.valeurs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.valeur-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--gris-clair);
  border-radius: var(--radius-sm);
}
.valeur-item .v-icon { font-size: 1.6rem; margin-bottom: 10px; }
.valeur-item h4 { font-size: 0.95rem; color: var(--gris-anthracite); margin-bottom: 6px; }
.valeur-item p { font-size: 0.85rem; color: var(--gris-moyen); }

/* ========== CERTIFICATIONS / BAS DE PAGE A PROPOS ========== */
.certif-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  margin-top: 40px;
  padding: 28px;
  background: var(--gris-clair);
  border-radius: var(--radius-sm);
}
.certif-row .certif-item {
  text-align: center;
  font-size: 0.88rem;
  color: var(--gris-moyen);
  font-weight: 600;
}
.certif-row .certif-item strong { color: var(--gris-anthracite); display: block; font-size: 0.95rem; }

/* ========== CONTACT / CTA SECTION ========== */
.contact-section {
  background: var(--gris-anthracite);
  color: var(--blanc);
  text-align: center;
  padding: 80px 0;
}
.contact-section h2 { color: var(--blanc); }
.contact-section p { color: rgba(255,255,255,0.75); font-size: 1.05rem; margin-bottom: 32px; }
.contact-section .dpe-bar { background: var(--gradient-dpe); }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 800px;
  margin: 0 auto 40px;
}
.contact-item {
  text-align: center;
}
.contact-item .c-icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--vert-dpe);
}
.contact-item .c-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.contact-item .c-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--blanc);
  word-break: break-word;
}

.btn-white {
  background: var(--blanc);
  color: var(--gris-anthracite);
  font-weight: 700;
  padding: 14px 40px;
}
.btn-white:hover {
  background: var(--gris-clair);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* ========== FORMULAIRE CONTACT ========== */
.contact-form-wrapper {
  max-width: 700px;
  margin: 60px auto 0;
  background: var(--blanc);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.contact-form-wrapper h3 {
  text-align: center;
  color: var(--gris-anthracite);
  margin-bottom: 24px;
  font-size: 1.3rem;
}
.contact-form { display: grid; gap: 18px; }
.contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--gris-anthracite);
  font-weight: 600;
  margin-bottom: 6px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gris-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--blanc);
  color: var(--gris-fonce);
  transition: border-color var(--transition);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form .submit-row { text-align: center; margin-top: 8px; }

/* ========== FOOTER ========== */
.footer {
  background: #2A2A2A;
  color: rgba(255,255,255,0.6);
  padding: 48px 0 28px;
}
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-brand img { height: 48px; margin-bottom: 12px; filter: brightness(10); }
.footer-brand p { font-size: 0.88rem; line-height: 1.6; max-width: 300px; }
.footer h4 {
  color: var(--blanc);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 8px; }
.footer ul a {
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
  transition: color var(--transition);
}
.footer ul a:hover { color: var(--blanc); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
}

.dpe-line-footer {
  height: 3px;
  background: var(--gradient-dpe);
  margin-bottom: 24px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .cards-grid { grid-template-columns: 1fr; }
  .diag-grid { grid-template-columns: 1fr; }
  .apropos-content { grid-template-columns: 1fr; }
  .valeurs-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .page-header h1 { font-size: 1.8rem; }
  .tarif-block { overflow-x: auto; }
  table.tarifs { min-width: 500px; }
  .packs-grid { grid-template-columns: 1fr 1fr; }
  .contact-form .form-row { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 28px 20px; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--blanc);
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--gris-border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .reassurance-items { gap: 20px; }
}