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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    color: #666;
}

.input-section {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 2rem;
}

.input-section label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #2c3e50;
    font-size: 1.1rem;
}

#input-text {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#input-text:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#transform-btn {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 1.5rem auto 0;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

#transform-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

#transform-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.results-section {
    margin-top: 2rem;
}

.results-section h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.generations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.generation-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s, box-shadow 0.2s;
}

.generation-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.generation-header {
    background: var(--card-color, #f5f5f5);
    padding: 1.25rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.generation-header h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.generation-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: #555;
}

.generation-content {
    padding: 1.25rem;
    min-height: 120px;
}

.generation-text {
    line-height: 1.6;
    color: #444;
}

.generation-text.loading {
    color: #999;
    font-style: italic;
}

.generation-text.error {
    color: #dc3545;
}

footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e0e0e0;
    color: #888;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.75rem;
    }

    .input-section {
        padding: 1.25rem;
    }

    .generations-grid {
        grid-template-columns: 1fr;
    }
}

.loading-dots::after {
    content: '';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}