* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
   
    background: linear-gradient(135deg, #062c2d, #020f10);
}

.container {
    padding: 40px;
    border-radius: 15px;
    background-color: white;
    width: 350px;
    display: flex;
    flex-direction: column;
    gap: 20px;
   
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

h1 {
    color: #064e3b;
    text-align: center;
    font-size: 28px;
}

input {
    padding: 12px;
    border: 2px solid #d1d5db;
    border-radius: 8px;
    font-size: 16px;
    outline: none;
}


input:focus {
    border-color: #059669; 
}

button {
    padding: 15px;
    background-color: #059669;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background-color: #047857;
}

#result {
    margin-top: 10px;
    padding: 20px;
    background-color: #ecfdf5;
    color: #065f46;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
    font-size: 20px;
}