:root {
  --color-primary: #2f6f4f;
  --color-primary-dark: #234f38;
  --color-accent: #f2a541;
  --color-text: #22302a;
  --color-bg: #fbfaf7;
  --color-card-bg: #ffffff;
  --font-family: "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}

h1, h2, h3 {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* En-tête et navigation */
.site-header {
  background-color: var(--color-card-bg);
  border-bottom: 1px solid #e5e0d8;
  position: sticky;
  top: 0;
  z-index: 10;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--color-primary);
}

/* Section héro */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 2rem;
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Fonctionnalités */
.features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.features h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background-color: var(--color-card-bg);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* Avantages */
.benefits {
  background-color: #eef4ef;
  padding: 3rem 1.5rem;
}

.benefits-list {
  max-width: 700px;
  margin: 0 auto;
  padding-left: 1.25rem;
}

.benefits-list li {
  margin-bottom: 0.75rem;
}

/* Contact */
.contact {
  max-width: 700px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  text-align: center;
}

.contact-form {
  display: flex;
  flex-direction: column;
  text-align: left;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.contact-form label {
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  padding: 0.6rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
}

.contact-form button {
  margin-top: 0.5rem;
  align-self: flex-start;
}

.form-feedback {
  margin-top: 1rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

/* Pied de page */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  color: #777;
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .navbar {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}