:root {
    --primary-color: #4a6fa5;
    --accent-color: #ff9800;
    --dark-bg: #1e2130;
    --light-bg: #2a2e43;
    --text-color: #e0e0e0;
    --border-color: #3d4263;
    --success-color: #4caf50;
    --error-color: #f44336;
}

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

body {
    font-family: 'Roboto', Arial, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 5px;
}

header p {
    font-size: 1.2rem;
    color: var(--text-color);
    opacity: 0.8;
}

/* Controls */
.controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.control-group {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.control-group h2 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.input-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.input-group label {
    flex: 0 0 100px;
    font-weight: 500;
}

.input-group input,
.input-group select {
    flex: 1;
    padding: 8px 12px;
    background-color: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    font-size: 0.9rem;
}

.input-group.checkbox {
    display: flex;
    align-items: center;
}

.input-group.checkbox input {
    margin-right: 10px;
    flex: 0 0 auto;
}

.input-group.checkbox label {
    flex: 1;
}

.small-btn {
    background-color: var(--dark-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 8px 12px;
    margin-left: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.small-btn:hover {
    background-color: var(--border-color);
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

button {
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.primary-btn:hover {
    background-color: #3a5a8c;
}

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

/* View Controls */
.view-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.view-controls button {
    background-color: var(--dark-bg);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.view-controls button:hover {
    background-color: var(--border-color);
}

.view-controls button.active {
    background-color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.view-controls button.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent-color);
}

#xray-mode-btn.active {
    background-color: var(--accent-color);
    color: #fff;
}

#xray-mode-btn.active::after {
    background-color: var(--primary-color);
}

/* Maze structure panel */
#maze-structure-panel {
    margin-top: 15px;
    padding: 15px;
    background-color: var(--dark-bg);
    border-radius: 4px;
    border-left: 4px solid #6b8cae;
}

.legend {
    margin-top: 15px;
    background-color: var(--dark-bg);
    border-radius: 4px;
    padding: 10px;
}

.legend-title {
    font-weight: bold;
    margin-bottom: 5px;
}

.legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}

.legend-color {
    width: 15px;
    height: 15px;
    border-radius: 3px;
    margin-right: 8px;
}

.legend-text {
    font-size: 0.9rem;
}

.tip {
    margin-top: 10px;
    padding: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    font-size: 0.9rem;
}

.tip strong {
    color: var(--accent-color);
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
}

#maze-container {
    height: 500px;
    background-color: var(--light-bg);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

/* Coordinate indicators */
.coordinates {
    position: absolute;
    color: var(--text-color);
    font-size: 0.8rem;
    opacity: 0.7;
}

.coordinates.x {
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
}

.coordinates.y {
    top: 50%;
    left: 5px;
    transform: translateY(-50%) rotate(-90deg);
}

.coordinates.z {
    top: 5px;
    right: 5px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: 8px;
    max-width: 500px;
    width: 100%;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.modal-header h2 {
    color: var(--accent-color);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    margin-bottom: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.hidden {
    display: none;
}

/* Footer */
.footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer p {
    margin-bottom: 10px;
    color: var(--text-color);
    opacity: 0.8;
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .controls {
        grid-template-columns: 1fr;
    }
    
    #maze-container {
        height: 400px;
    }
}

@media (max-width: 480px) {
    .input-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .input-group label {
        margin-bottom: 5px;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    #maze-container {
        height: 300px;
    }
}