/* 🌈 STYLE GLOBAL */
body {
  background: linear-gradient(
    to bottom, 
    #658375,   /* vert-gris moderne */
    #c3ddb3,   /* vert clair */
    #658375
  );
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center; 
  align-items: center;
  padding: 1rem;
  box-sizing: border-box;
}

/* 💳 CARD */
.card {
  width: 100%;
  max-width: 420px;    /* largeur par défaut */
  min-width: 300px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.25);
  padding: 2rem;
  font-size: 1rem;
  transition: all 0.3s ease;
}

/* Hover effect */
.card:hover {
  transform: translateY(-5px);
}

/* 🏷️ TITRE */
.login-card h3 {
  font-weight: 700;
  margin-bottom: 1rem;
  color: #2d2d2d;
  text-align: center;
}

/* 🔘 BOUTON PERSONNALISÉ */
.btn-custom {
  background-color: #15803d;
  color: white;
  font-weight: 600;
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: none;
  transition: background-color 0.3s ease, transform 0.2s ease;
}
.btn-custom:hover {
  background-color: #16a34a;
  transform: translateY(-2px);
}

/* 🖼️ LOGO */
.login-card img {
  height: 3.5rem;
  display: block;
  margin: 0 auto 1.5rem auto;
}

/* 📱 RESPONSIVE DESIGN */

/* XS - petits téléphones */
@media (max-width: 480px) {
  .card {
    max-width: 85vw;
    padding: 1rem;
    font-size: 0.9rem;
  }
}

/* SM - téléphones larges (481px à 640px) */
@media (min-width: 481px) and (max-width: 640px) {
  .card {
    max-width: 90vw;
    padding: 1.5rem;
    font-size: 1rem;
  }
}

/* MD - tablettes (641px à 1023px) */
@media (min-width: 641px) and (max-width: 1023px) {
  .card {
    max-width: 550px;
    padding: 2rem;
    font-size: 1.05rem;
  }
}

/* LG - ordinateurs portables (1024px à 1279px) */
@media (min-width: 1024px) and (max-width: 1279px) {
  .card {
    max-width: 600px;
    padding: 2.5rem;
    font-size: 1.1rem;
  }
}

/* XL - grands écrans (1280px à 1535px) */
@media (min-width: 1280px) and (max-width: 1535px) {
  .card {
    max-width: 650px;
    padding: 3rem;
    font-size: 1.15rem;
  }
}

/* 2XL - très grands écrans (1536px et +) */
@media (min-width: 1536px) {
  .card {
    max-width: 700px;
    padding: 3rem;
    font-size: 1.2rem;
  }
}