body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1e1e1e;
    color: #d4d4d4;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

header {
    padding: 10px 20px;
    background-color: #252526;
    border-bottom: 1px solid #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    margin: 0;
    font-size: 18px;
    font-weight: normal;
}

.status {
    font-size: 12px;
    color: #666;
}

.status.connected {
    color: #4ec9b0;
}

main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.pane {
    display: flex;
    flex-direction: column;
    border-right: 1px solid #333;
}

#left-pane {
    flex: 2;
}

#right-pane {
    flex: 1;
    border-right: none;
}

.pane-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid #333;
    overflow: hidden;
}

.pane-section:last-child {
    border-bottom: none;
}

.pane-header {
    padding: 5px 10px;
    background-color: #2d2d2d;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#editor-container {
    flex: 1;
}

#env-container {
    flex: 1;
}

#result-output {
    flex: 1;
    margin: 0;
    padding: 10px;
    background-color: #1e1e1e;
    color: #d4d4d4;
    font-family: 'Consolas', 'Courier New', monospace;
    white-space: pre-wrap;
    overflow: auto;
}

#run-btn {
    background-color: #0e639c;
    color: white;
    border: none;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 12px;
    border-radius: 2px;
}

#run-btn:hover {
    background-color: #1177bb;
}