:root {
  --brand-primary: #1e3a8a;
  --brand-accent: #f97316;
  --brand-dark: #111;
  --text-light: #fff;
  --text-dark: #333;
  --bg-light: #f7f7f7;
}

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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: var(--bg-light);
  color: var(--text-dark);
}

/* Slider */
.slider {
  position: relative;
  height: 100vh;
  overflow: hidden;
}
.slides {
  display: flex;
  height: 100%;
  transition: transform 0.6s ease-in-out;
}
.slide {
  min-width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}
.slider-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-light);
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  padding: 2rem;
  border-radius: 1rem;
}
.slider-text h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.slider-text p {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}
.cta-button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--brand-accent);
  color: var(--text-light);
  font-weight: bold;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: transform 0.3s, background 0.3s;
}
.cta-button:hover {
  background: #ff6600;
  transform: scale(1.05);
}

/* Sections */
section {
  padding: 4rem 2rem;
  text-align: center;
}
h2 {
  margin-bottom: 2rem;
  font-size: 2rem;
  color: var(--brand-primary);
}

/* Avantages & Prestations */
.advantages, .prestations-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.advantage, .prestation {
  background: var(--brand-primary);
  color: var(--text-light);
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}
.advantage:hover, .prestation:hover {
  transform: translateY(-5px);
}

/* Zone d’intervention */
.zone-block {
  max-width: 800px;
  margin: auto;
  background: var(--brand-primary);
  color: var(--text-light);
  padding: 2rem;
  border-radius: 0.5rem;
}

/* À propos */
.certifs img {
  height: 80px;
  margin: 1rem;
}

/* Galerie */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.gallery img {
  width: 100%;
  border-radius: 0.5rem;
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

/* Contact */
.contact {
  background: var(--brand-accent);
  color: var(--text-light);
}
.contact form {
  max-width: 500px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact input, .contact textarea {
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: none;
}
.contact input[type="submit"] {
  background: var(--brand-dark);
  color: var(--text-light);
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
}
.contact input[type="submit"]:hover {
  background: #000;
}

/* Footer */
footer {
  background: var(--brand-dark);
  color: var(--text-light);
  text-align: center;
  padding: 1.5rem;
}