:root {
  --normal: #2ecc71;
  --alerte: #e74c3c;
  --surveillance: #e67e22;
  --background: #f5f6fa;
  --card: #ffffff;
  --text: #2d3436;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--background);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header {
  text-align: center;
  padding: 1em;
  background: white;
  width: 100%;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo-container {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 0.5em;
}

.logo-container img {
  height: 50px;
  object-fit: contain;
}

main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5em;
  padding: 2em;
  width: 100%;
  max-width: 1000px;
  box-sizing: border-box;
}

/* Cartes */
.card {
  background-color: var(--card);
  padding: 1.5em;
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  text-align: center;
  transition: background-color 0.3s ease-in-out;
}

.card h2 {
  margin: 0.5em 0;
  color: var(--text);
}

.value {
  font-size: 2em;
  font-weight: bold;
}

.etat {
  margin-top: 0.5em;
  font-size: 0.9em;
  color: #777;
}

/* Fond spécifique par état */
#temperature.card {
  background-color: #fdecea;
}

#bpm.card {
  background-color: #eafaf1;
}

#pression.card {
  background-color: #fff4e6;
}

/* Icônes */
.icon {
  font-size: 2.5em;
  margin-bottom: 0.5em;
}

.icon-temp {
  color: #e74c3c;
}

.icon-bpm {
  color: #27ae60;
}

.icon-pression {
  color: #e67e22;
}

footer {
  padding: 1em;
  text-align: center;
  font-size: 0.9em;
  color: gray;
  width: 100%;
}

@media (max-width: 600px) {
  .logo-container {
    flex-direction: column;
    gap: 10px;
  }

  .card {
    padding: 1em;
  }
}