/* ===== Base Styles (Mobile First) ===== */
body {
  margin: 0;
  font-family: Calibri, sans-serif;
  background: linear-gradient(135deg, #f0f4f8, #dce7f3);
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
}

h1 {
  font-weight: bold;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: #2c3e50;
}

#countdown {
  font-size: 2.5rem;
  font-weight: bold;
  color: #34495e;
  background: #ffffffcc;
  padding: 1rem 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  margin-bottom: 1rem;
  transition: all 0.3s ease;
}

#message {
  font-size: 1.2rem;
  color: #555;
  margin-top: 1rem;
}

/* ===== Tablet Breakpoint ===== */
@media (min-width: 600px) {
  h1 {
    font-size: 2.5rem;
  }
  #countdown {
    font-size: 3rem;
    padding: 1.5rem 3rem;
  }
  #message {
    font-size: 1.4rem;
  }
}

/* ===== Desktop Breakpoint ===== */
@media (min-width: 1024px) {
  h1 {
    font-size: 3rem;
  }
  #countdown {
    font-size: 4rem;
    padding: 2rem 4rem;
  }
  #message {
    font-size: 1.6rem;
  }
}