:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #111827;
    --bg-card: #1a2234;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #1f2937;
    --border-light: #374151;
    --success: #22c55e;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.main {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-secondary);
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 24px;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent);
}

.title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.textarea {
    width: 100%;
    height: 200px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: 'Monaco', 'Menlo', monospace;
    color: var(--text-primary);
    resize: vertical;
    transition: border-color 0.2s;
}

.textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.textarea::placeholder {
    color: var(--text-secondary);
}

.button-group {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

button {
    background-color: var(--accent);
    color: #fff;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

button:last-child {
    background-color: var(--success);
}

button:last-child:hover {
    background-color: #16a34a;
}

.output-title {
    margin-top: 32px;
    margin-bottom: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.output {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    font-size: 0.9rem;
    font-family: 'Monaco', 'Menlo', monospace;
    text-align: left;
    white-space: pre-wrap;
    color: var(--text-primary);
    min-height: 150px;
    line-height: 1.7;
}

pre {
    background-color: var(--bg-card);
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    white-space: pre-wrap;
    color: var(--text-primary);
}