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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #edf5ff;
    --bg-hover: #3c3c3c;
    --text-primary: #d4d4d4;
    --text-secondary: #9cdcfe;
    --text-muted: #64748b;
    --accent-primary: #0f4ba5;
    --accent-hover: #0098ff;
    --accent-success: #4ec9b0;
    --accent-error: #f44747;
    --accent-warning: #dcdcaa;
    --border-color: #3c3c3c;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 30px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: 600;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 20px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toolbar-group label {
    color: var(--text-secondary);
    font-weight: 500;
}

select {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 15px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: border-color 0.2s;
}

select:hover, select:focus {
    border-color: var(--accent-primary);
    outline: none;
}

.radio-group {
    display: flex;
    gap: 15px;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-primary);
    cursor: pointer;
}

input[type="radio"],
input[type="checkbox"] {
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

@media (max-width: 968px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.panel-actions {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn svg {
    width: 16px;
    height: 16px;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

.panel textarea {
    flex: 1;
    min-height: 400px;
    padding: 20px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: none;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
}

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

.panel textarea:focus {
    outline: none;
}

.output-container {
    flex: 1;
    min-height: 400px;
    position: relative;
    background-color: var(--bg-primary);
}

.output-container pre {
    margin: 0;
    padding: 20px;
    min-height: 100%;
    overflow: auto;
}

.output-container code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
}

.empty-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-muted);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 15px;
    opacity: 0.5;
}

.output-actions {
    display: flex;
    gap: 10px;
    padding: 15px 20px;
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.error-message {
    padding: 10px 20px;
    background-color: rgba(244, 71, 71, 0.1);
    color: var(--accent-error);
    border-top: 1px solid var(--border-color);
    display: none;
}

.error-message.show {
    display: block;
}

.examples-section {
    margin-bottom: 30px;
}

.examples-section h3 {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.example-btn {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s;
    color: var(--text-primary);
    font-size: 14px;
}

.example-btn:hover {
    background-color: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.example-icon {
    font-size: 1.5rem;
}

footer {
    text-align: center;
    padding: 20px 0;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--accent-success);
    color: var(--bg-primary);
    padding: 15px 25px;
    border-radius: 4px;
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    font-weight: 500;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .examples-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .panel textarea,
    .output-container {
        min-height: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .panel-header {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
}

.token.keyword {
    color: #569cd6 !important;
}

.token.string {
    color: #ce9178 !important;
}

.token.number {
    color: #b5cea8 !important;
}

.token.comment {
    color: #6a9955 !important;
}

.token.operator {
    color: #d4d4d4 !important;
}

.token.punctuation {
    color: #d4d4d4 !important;
}

.token.function {
    color: #dcdcaa !important;
}