body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #1a202c;
    color: #e2e8f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background-color: #2d3748;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    width: 90%;
    max-width: 600px;
}

h1 {
    text-align: center;
    color: #a0aec0;
    margin-bottom: 2rem;
    font-weight: 300;
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.settings, .generation {
    background-color: #4a5568;
    padding: 1.5rem;
    border-radius: 8px;
}

h3 {
    margin-top: 0;
    color: #cbd5e0;
    border-bottom: 1px solid #718096;
    padding-bottom: 0.5rem;
    font-weight: 500;
}

.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
}

.icon-grid label {
    background-color: #2d3748;
    padding: 0.75rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon-grid label:hover {
    background-color: #718096;
}

.icon-grid input[type="radio"] {
    accent-color: #63b3ed;
}

.url-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.url-inputs label {
    font-size: 1.2rem;
    color: #cbd5e0;
}

.url-inputs input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    background-color: #1a202c;
    border: 1px solid #4a5568;
    color: #e2e8f0;
    border-radius: 5px;
    box-sizing: border-box;
}

#generate-btn {
    width: 100%;
    padding: 1rem;
    background-color: #f6e05e;
    color: #1a202c;
    border: none;
    border-radius: 5px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 1.5rem;
}

#generate-btn:hover {
    background-color: #f6ad55;
}