body {
  font-family: Arial, sans-serif;
  background: #f0f8ff;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 20px;
  margin: 0;
  min-height: 100vh;
}

.container {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  max-width: 600px;
  width: 100%;
}

/* 💬 Introduction */
.intro {
  text-align: left;
  margin-bottom: 2rem;
  padding: 1rem;
  background: #e8f4ff;
  border-radius: 8px;
  line-height: 1.6;
}

.intro h1 {
  color: #007BFF;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.intro h2 {
  color: #007BFF;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.intro h3 {
  color: #0056b3;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

/* 🔹 Conseils sans puces */
.conseil-list {
  margin: 0.5rem 0 1rem 1rem;
  padding-left: 0;
  text-align: left;
}

.conseil-list p {
  margin: 0.3rem 0;
  line-height: 1.4;
}

.intro hr {
  margin: 1.5rem 0;
  border: 0;
  border-top: 1px solid #ccc;
}

/* ⏱️ Timer */
.timer-section {
  margin: 2rem 0;
}

#startBtn {
  padding: 12px 24px;
  font-size: 18px;
  background: #007BFF;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-bottom: 1rem;
}

#startBtn:hover {
  background: #0056b3;
}

#timerDisplay {
  font-size: 3rem;
  font-weight: bold;
  color: #333;
  margin: 1rem 0;
  font-family: 'Courier New', monospace; /* Pour éviter les gros : */
  letter-spacing: -1px;
}

#status {
  font-size: 1.2rem;
  color: #555;
  font-style: italic;
}

/* 📜 Crédits */
.credits {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: #777;
}

.credits a {
  color: #007BFF;
  text-decoration: none;
}

.credits a:hover {
  text-decoration: underline;
}