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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #1e1e1e;
    color: #d4d4d4;
}

body.light-theme {
    background: #ffffff;
    color: #333333;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: #2d2d2d;
    border-bottom: 1px solid #404040;
}

body.light-theme .toolbar {
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
}

.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
    background: #404040;
    color: #d4d4d4;
}

body.light-theme .btn {
    background: #e0e0e0;
    color: #333;
}

.btn:hover {
    background: #505050;
}

body.light-theme .btn:hover {
    background: #d0d0d0;
}

.btn-primary {
    background: #0e639c;
    color: #ffffff;
}

.btn-primary:hover {
    background: #1177bb;
}

.btn-icon {
    padding: 8px 12px;
    font-size: 18px;
}

#languageSelect {
    padding: 8px 12px;
    border: 1px solid #404040;
    border-radius: 4px;
    background: #3c3c3c;
    color: #d4d4d4;
    font-size: 14px;
    cursor: pointer;
}

body.light-theme #languageSelect {
    background: #ffffff;
    border-color: #ddd;
    color: #333;
}

.editor-container {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.editor-pane, .output-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.pane-header {
    padding: 8px 16px;
    background: #2d2d2d;
    border-bottom: 1px solid #404040;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: #808080;
}

body.light-theme .pane-header {
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
}

.resizer {
    width: 4px;
    background: #404040;
    cursor: col-resize;
    transition: background 0.2s;
}

.resizer:hover, .resizer.active {
    background: #0e639c;
}

#codeEditor {
    flex: 1;
    font-size: 14px;
    line-height: 1.5;
}

.CodeMirror {
    height: 100% !important;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

#output {
    flex: 1;
    padding: 16px;
    overflow: auto;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.log-entry {
    margin-bottom: 4px;
}

.log-entry.error {
    color: #f48771;
}

body.light-theme .log-entry.error {
    color: #d73a49;
}

.log-entry.warn {
    color: #cca700;
}

.log-entry.info {
    color: #75beff;
}

.timestamp {
    color: #6a9955;
    margin-right: 8px;
}

body.light-theme .timestamp {
    color: #6a9955;
}