body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f4f6f9;
    padding: 40px;
}

h2 {
    margin-bottom: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

textarea {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #ddd;
    resize: none;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #45a049;
}

.controls button {
    background: #eee;
    color: #333;
}

.controls button:hover {
    background: #ddd;
}

select {
    padding: 6px;
    border-radius: 6px;
}

/* Section spacing */
.section {
    margin-top: 25px;
}

/* Loader */
.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #4CAF50;
    border-radius: 50%;
    width: 25px;
    height: 25px;
    animation: spin 1s linear infinite;
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.footer {
    margin-top: 40px;
    text-align: center;
    color: #777;
    font-size: 14px;
}