:root {
    --primary: #3498db;
    --secondary: #2c3e50;
    --success: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
    --dark: #34495e;
    --light: #ecf0f1;
    --gray: #95a5a6;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1a1a2e;
    color: #fff;
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

.container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.editor-panel, .field-panel, .output-panel {
    background: #16213e;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.editor-panel {
    grid-column: 1;
    grid-row: 1;
}

.field-panel {
    grid-column: 2;
    grid-row: 1;
    display: flex;
    flex-direction: column;
}

.output-panel {
    grid-column: 1 / span 2;
    grid-row: 2;
}

h2 {
    margin-bottom: 15px;
    color: #fff;
    font-weight: 600;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 8px;
}

.controls {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.run-btn {
    background-color: var(--success);
    color: white;
}

.run-btn:hover {
    background-color: #27ae60;
    transform: translateY(-2px);
}

.reset-btn {
    background-color: var(--warning);
    color: white;
}

.reset-btn:hover {
    background-color: #e67e22;
    transform: translateY(-2px);
}

.tools {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.tool-btn {
    background-color: var(--dark);
    color: white;
    flex: 1;
}

.tool-btn:hover {
    background-color: #2c3e50;
    transform: translateY(-2px);
}

.tool-btn.active {
    background-color: var(--primary);
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

#clear-btn {
    background-color: var(--danger);
    flex: 2;
}

#clear-btn:hover {
    background-color: #c0392b;
}

.canvas-container {
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
}

#robot-canvas {
    border: 2px solid var(--primary);
    border-radius: 5px;
    background-color: #0f3460;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.CodeMirror {
    height: 400px;
    border-radius: 5px;
    overflow: hidden;
    font-size: 16px;
}

.output-content {
    background: #0f3460;
    border-radius: 5px;
    padding: 15px;
    min-height: 100px;
    max-height: 200px;
    overflow-y: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 15px;
    line-height: 1.5;
}

.output-line {
    padding: 5px 0;
    color: #ddd;
}

.error {
    color: #ff6b6b;
    font-weight: bold;
    padding: 5px 0;
}

.loading {
    color: var(--primary);
    font-style: italic;
}

.highlighted-line {
    background-color: rgba(243, 156, 18, 0.3) !important;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { background-color: rgba(243, 156, 18, 0.3); }
    50% { background-color: rgba(243, 156, 18, 0.6); }
    100% { background-color: rgba(243, 156, 18, 0.3); }
}

@media (max-width: 1000px) {
    .container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .editor-panel {
        grid-column: 1;
        grid-row: 1;
    }

    .field-panel {
        grid-column: 1;
        grid-row: 2;
    }

    .output-panel {
        grid-column: 1;
        grid-row: 3;
    }
}