body {
    font-family: 'Roboto Slab', serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h1 {
    color: #2d3436;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.input-group {
    text-align: left;
    margin-bottom: 15px;
}

label {
    font-size: 0.9rem;
    color: #636e72;
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
}

input,
select {
    width: 100%;
    padding: 12px;
    border: 2px solid #dfe6e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

input:focus,
select:focus {
    outline: none;
    border-color: #667eea;
}

.arrow {
    font-size: 1.5rem;
    margin: 10px 0;
    color: #b2bec3;
}

.result-area {
    margin-top: 20px;
    padding: 15px;
    background: #f1f2f6;
    border-radius: 8px;
}

.result-area h4 {
    margin: 0;
    font-size: 0.8rem;
    color: #747d8c;
    text-transform: uppercase;
}

#resultDisplay {
    font-size: 2rem;
    font-weight: bold;
    color: #2d3436;
    margin-top: 5px;
}