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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 30px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #333;
    font-size: 1.1rem;
}

textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

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

.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 0 auto;
    min-width: 200px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.btn:active {
    transform: translateY(0);
}

.result-section {
    margin-top: 40px;
    padding: 30px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 15px;
    border-left: 6px solid #667eea;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-section h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.8rem;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    padding-bottom: 10px;
    border-bottom: 3px solid rgba(102, 126, 234, 0.3);
}

.result-content {
    background: white;
    padding: 25px;
    border-radius: 10px;
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.9;
    color: #2c3e50;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.loading {
    text-align: center;
    padding: 20px;
    color: #666;
    font-style: italic;
}

.error {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
}

@media (max-width: 768px) {
    .container {
        margin: 10px;
        padding: 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .btn {
        width: 100%;
    }
}