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

:root {
    /* Monokai theme colors */
    --bg-primary: #272822;
    --bg-secondary: #1e1f1c;
    --bg-tertiary: #3e3d32;
    --text-primary: #f8f8f2;
    --text-secondary: #75715e;
    --accent: #66d9ef;
    --accent-secondary: #a6e22e;
    --error: #f92672;
    --success: #a6e22e;
    --string: #e6db74;
    --number: #ae81ff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid #49483e;
}

header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
    }
}

.editor-container,
.output-container {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid #49483e;
    flex-wrap: wrap;
}

.toolbar select {
    padding: 0.5rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid #49483e;
    border-radius: 4px;
    min-width: 200px;
}

.toolbar button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
}

.toolbar button.primary {
    background: var(--accent);
    color: white;
}

.toolbar button.primary:hover {
    background: #52b5d6;
}

.toolbar button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.toolbar label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.toolbar input[type="number"] {
    width: 80px;
    padding: 0.5rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid #49483e;
    border-radius: 4px;
}

.editor-wrapper {
    flex: 1;
    min-height: 400px;
}

/* Monaco Editor Container */
#monaco-container {
    width: 100%;
    height: 100%;
    min-height: 400px;
}

.output-header {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid #49483e;
}

.output-header h2 {
    font-size: 1rem;
    margin: 0;
}

#copy-btn,
#clear-output-btn {
    padding: 0.35rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid #49483e;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: background 0.2s, border-color 0.2s;
}

#copy-btn:hover,
#clear-output-btn:hover {
    background: var(--bg-primary);
    border-color: var(--accent);
}

#copy-btn.copied,
#clear-output-btn.copied {
    background: var(--success);
    color: var(--bg-primary);
    border-color: var(--success);
}

#output {
    flex: 1;
    min-height: 100px;
    padding: 1rem;
    background: var(--bg-primary);
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.5;
    overflow: auto;
    white-space: pre-wrap;
}

#result {
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-top: 1px solid #49483e;
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    color: var(--success);
}

#error {
    padding: 0.75rem 1rem;
    background: rgba(249, 38, 114, 0.15);
    border: 1px solid var(--error);
    border-radius: 4px;
    margin: 0.5rem;
    color: var(--error);
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-word;
}

.hidden {
    display: none;
}

footer {
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid #49483e;
    text-align: center;
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

#version {
    color: var(--text-secondary);
    font-size: 0.875rem;
}