* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #f9d423, #ff4e50);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  text-align: center;
  max-width: 350px;
  width: 90%;
}

h1 {
  font-size: 24px;
  color: #ff4e50;
  margin-bottom: 15px;
}

p {
  margin-bottom: 20px;
  font-size: 14px;
  color: #555;
}

input[type="date"] {
  padding: 10px;
  font-size: 16px;
  width: 100%;
  border: 2px solid #ccc;
  border-radius: 10px;
  margin-bottom: 15px;
}

button {
  padding: 10px 20px;
  background-color: #ff4e50;
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background-color: #e63e3f;
}

#result {
  margin-top: 15px;
  font-weight: bold;
  color: #333;
}