/* ============================================================
   BâtiBlue — Pages "Solutions"
   Styles communs aux 7 pages dédiées + page d'index /solutions/
   S'appuie sur les variables et composants définis dans styles.css
   ============================================================ */

/* --- Hero solution : photo de fond + dégradé bleu --------- */
.solution-hero {
  position: relative;
  padding: 180px 0 100px;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-medium) 100%);
  color: var(--white);
}
.solution-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--hero-bg);
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  z-index: -2;
}
.solution-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 58, 107, 0.86) 0%, rgba(42, 82, 152, 0.55) 100%);
  z-index: -1;
}
.solution-hero--isolation { --hero-bg: url('https://images.unsplash.com/photo-1581094288338-2314dddb7ece?auto=format&fit=crop&w=1600&q=80'); }
.solution-hero--chauffage { --hero-bg: url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?auto=format&fit=crop&w=1600&q=80'); }
.solution-hero--ventilation { --hero-bg: url('https://images.unsplash.com/photo-1568605114967-8130f3a36994?auto=format&fit=crop&w=1600&q=80'); }
.solution-hero--eau { --hero-bg: url('https://images.unsplash.com/photo-1548839140-29a749e1cf4d?auto=format&fit=crop&w=1600&q=80'); }
.solution-hero--photovoltaique { --hero-bg: url('https://images.unsplash.com/photo-1509391366360-2e959784a276?auto=format&fit=crop&w=1600&q=80'); }
.solution-hero--pilotage { --hero-bg: url('https://images.unsplash.com/photo-1558002038-1055907df827?auto=format&fit=crop&w=1600&q=80'); }
.solution-hero--courtage-energie { --hero-bg: url('https://images.unsplash.com/photo-1521791136064-7986c2920216?auto=format&fit=crop&w=1600&q=80'); }

.solution-hero .container { max-width: 920px; }
.solution-hero h1 {
  color: var(--white);
  max-width: 820px;
  margin: 0;
}
.solution-hero__subtitle {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.15rem;
  max-width: 660px;
  margin: 18px 0 0;
}
.solution-hero__cta {
  margin-top: 30px;
  display: inline-flex;
}
.solution-hero__breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.solution-hero__breadcrumb a { color: inherit; text-decoration: none; }
.solution-hero__breadcrumb a:hover { color: var(--green-light); }
.solution-hero__breadcrumb svg { width: 14px; height: 14px; opacity: 0.7; }

/* --- Bloc "Pourquoi" — 3 cartes --------------------------- */
.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.reason-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: all var(--transition);
}
.reason-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--green);
}
.reason-card__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--green-pale);
  color: var(--green-dark);
  font-weight: 800;
  font-size: 1.05rem;
  margin-bottom: 18px;
}
.reason-card h3 {
  color: var(--blue-deep);
  font-size: 1.15rem;
  margin-bottom: 12px;
}
.reason-card p {
  font-size: 0.95rem;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.65;
}

/* --- Équipements & technologies + Stats ------------------- */
.tech-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 48px;
}
@media (max-width: 860px) {
  .tech-grid { grid-template-columns: 1fr; gap: 36px; }
}

.tech-list { display: flex; flex-direction: column; gap: 14px; }
.tech-list__item {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-sm);
  align-items: flex-start;
  transition: border-color var(--transition);
}
.tech-list__item:hover { border-color: var(--green); }
.tech-list__icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  background: var(--blue-pale);
  color: var(--blue-deep);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech-list__icon svg { width: 18px; height: 18px; }
.tech-list__title {
  font-weight: 700;
  color: var(--blue-deep);
  font-size: 0.98rem;
  margin-bottom: 4px;
  line-height: 1.3;
}
.tech-list__desc {
  font-size: 0.88rem;
  color: var(--gray-600);
  line-height: 1.55;
}

.stats-title {
  color: var(--blue-deep);
  margin-bottom: 18px;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.stat-card {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-medium) 100%);
  color: var(--white);
  padding: 28px 20px;
  border-radius: var(--radius-md);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.stat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(139,197,63,0.18), transparent 60%);
}
.stat-card__value {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--green-light);
  letter-spacing: -0.02em;
  position: relative;
  line-height: 1.1;
}
.stat-card__label {
  font-size: 0.8rem;
  opacity: 0.88;
  margin-top: 8px;
  line-height: 1.4;
  position: relative;
}

/* --- Aides financières ------------------------------------ */
.aides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.aide-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-left: 3px solid var(--green);
  border-radius: var(--radius-sm);
  padding: 24px 22px;
  transition: box-shadow var(--transition);
}
.aide-card:hover { box-shadow: var(--shadow-sm); }
.aide-card h4 {
  color: var(--blue-deep);
  margin-bottom: 8px;
  font-size: 1rem;
}
.aide-card p {
  font-size: 0.92rem;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.55;
}
.aides-cta {
  margin-top: 32px;
  text-align: center;
  font-size: 0.95rem;
  color: var(--gray-600);
}
.aides-cta a {
  color: var(--green-dark);
  font-weight: 700;
  border-bottom: 1px dashed var(--green);
}
.aides-cta a:hover { color: var(--blue-deep); border-bottom-color: var(--blue-deep); }

/* --- Galerie 3 images ------------------------------------- */
.sol-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
@media (max-width: 768px) { .sol-gallery { grid-template-columns: 1fr; } }
.sol-gallery__item {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  background: var(--gray-100);
  box-shadow: var(--shadow-sm);
}
.sol-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.sol-gallery__item:hover img { transform: scale(1.06); }
.sol-gallery__item figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px 18px;
  background: linear-gradient(transparent, rgba(27, 58, 107, 0.9));
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
}

/* --- CTA final -------------------------------------------- */
.sol-cta {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-medium) 100%);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  max-width: 920px;
  margin: 0 auto;
}
.sol-cta::before {
  content: '';
  position: absolute;
  top: -40%; right: -15%;
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(139, 197, 63, 0.2), transparent 65%);
  pointer-events: none;
}
.sol-cta h2 { color: var(--white); position: relative; }
.sol-cta p {
  color: rgba(255, 255, 255, 0.85);
  margin: 14px auto 28px;
  max-width: 560px;
  position: relative;
}
.sol-cta__buttons {
  position: relative;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.sol-cta .btn--secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
  background: transparent;
}
.sol-cta .btn--secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--white);
}

@media (max-width: 640px) {
  .sol-cta { padding: 40px 24px; }
}

/* --- Index /solutions/ — grille de vignettes --------------- */
.sol-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.sol-tile {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
}
.sol-tile:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--green);
}
.sol-tile__img {
  aspect-ratio: 16/10;
  background: var(--gray-100);
  overflow: hidden;
}
.sol-tile__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.sol-tile:hover .sol-tile__img img { transform: scale(1.06); }
.sol-tile__body {
  padding: 22px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.sol-tile__body h3 {
  color: var(--blue-deep);
  margin-bottom: 8px;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}
.sol-tile__body p {
  font-size: 0.9rem;
  color: var(--gray-500);
  margin: 0 0 14px;
  line-height: 1.55;
  flex: 1;
}
.sol-tile__badge {
  color: var(--green-dark);
  font-weight: 700;
}
.sol-tile__arrow {
  color: var(--green-dark);
  font-weight: 700;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.sol-tile__arrow::after {
  content: '→';
  transition: transform var(--transition);
}
.sol-tile:hover .sol-tile__arrow::after { transform: translateX(4px); }

/* ==== courtage-energie.html ==== */
.market-chart {
  max-width: 920px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px 28px 24px;
}
.market-chart img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}
.market-chart figcaption {
  font-size: 0.93rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}
.market-chart figcaption strong { color: var(--blue-deep); }
.market-chart__src {
  display: block;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--gray-500);
  font-style: italic;
}
@media (max-width: 640px) {
  .market-chart { padding: 18px 18px 16px; }
}

/* ==== pilotage.html — Coup de cœur produit (Marstek MARS II) ==== */
.product-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 48px;
}
@media (max-width: 860px) {
  .product-feature { grid-template-columns: 1fr; gap: 32px; padding: 32px 24px; }
}
.product-feature__visual {
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--blue-pale) 0%, var(--green-pale) 100%);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}
.product-feature__visual img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.product-feature__brand {
  display: inline-block;
  padding: 4px 12px;
  background: var(--blue-deep);
  color: var(--white);
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.product-feature__title {
  color: var(--blue-deep);
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.product-feature__tagline {
  color: var(--gray-500);
  font-size: 0.95rem;
  margin-bottom: 24px;
  font-weight: 500;
}
.product-feature__list {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
}
.product-feature__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.93rem;
  color: var(--gray-700);
  line-height: 1.55;
}
.product-feature__list li:last-child { border-bottom: 0; }
.product-feature__list li::before {
  content: '';
  flex-shrink: 0;
  width: 18px; height: 18px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--green) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' fill='none' stroke='white' stroke-width='3' viewBox='0 0 24 24'><path stroke-linecap='round' stroke-linejoin='round' d='M5 13l4 4L19 7'/></svg>") center/12px no-repeat;
}
.product-feature__list li strong { color: var(--blue-deep); }
.product-feature__note {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-style: italic;
  line-height: 1.5;
}
.product-feature__note a {
  color: var(--green-dark);
  border-bottom: 1px dashed var(--green);
  font-weight: 600;
}