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

body {
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    color: white;
    text-align: center;
    margin-bottom: 1rem;
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.description {
    color: rgba(255,255,255,0.9);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.translator {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    margin-bottom: 2rem;
}

.input-section, .output-section {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #2a5298;
}

textarea {
    width: 100%;
    min-height: 100px;
    padding: 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    resize: vertical;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: #2a5298;
}

textarea[readonly] {
    background: #f8f9fa;
}

button {
    background: #2a5298;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    margin-top: 0.5rem;
    transition: background 0.3s;
}

button:hover {
    background: #1e3c72;
}

.divider {
    height: 2px;
    background: linear-gradient(to right, transparent, #ddd, transparent);
    margin: 2rem 0;
}

.mapping-table {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.mapping-table h3 {
    color: #2a5298;
    margin-bottom: 1rem;
    text-align: center;
}

.mapping-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 0.5rem;
}

.mapping-pair {
    background: #f8f9fa;
    padding: 0.5rem;
    border-radius: 5px;
    text-align: center;
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .translator {
        padding: 1.5rem;
    }
}