/* General Styles */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f4f8f9;
    line-height: 1.6;
}

header {
    background-color: #2c7a7b;
    color: #ffffff;
    padding: 1rem;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 1.8rem;
}

header nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: flex-end;
}

header nav li {
    margin-left: 16px;
}

header nav button {
    background-color: #ffffff;
    color: #2c7a7b;
    border: none;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

header nav button:hover {
    background-color: #38b2ac;
    color: #ffffff;
}

/* Workspace Layout */
#workspace {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    grid-gap: 1rem;
    padding: 1rem;
}

#navigation-pane, #info-panel {
    background-color: #ffffff;
    border: 1px solid #d3d3d3;
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#navigation-pane h2, #info-panel h2 {
    margin-top: 0;
}

#visualization-pane {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #e6f7f9;
    border-radius: 8px;
    border: 1px solid #d3d3d3;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
}

#visualization-canvas {
    max-width: 100%;
    max-height: 100%;
    border: 2px solid #2c7a7b;
    border-radius: 8px;
}

/* Drag-and-Drop Items */
.drag-item {
    background-color: #38b2ac;
    color: #ffffff;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    cursor: grab;
    text-align: center;
    user-select: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s;
}

.drag-item:active {
    cursor: grabbing;
}

.drag-item:hover {
    background-color: #319795;
}

/* Detailed Information Panel */
#info-panel {
    text-align: left;
    font-size: 0.9rem;
    overflow-y: auto;
    max-height: calc(100vh - 4rem - 2rem);
}

#info-content {
    padding: 0.5rem;
}

/* Footer */
footer {
    background-color: #2c7a7b;
    color: #ffffff;
    text-align: center;
    padding: 1rem;
    position: relative;
    bottom: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    #workspace {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
        grid-gap: 0.5rem;
    }

    #navigation-pane, #info-panel {
        max-height: 50vh;
    }

    #visualization-pane {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    header nav {
        justify-content: center;
    }

    #workspace {
        grid-template-columns: 1fr;
        grid-gap: 0.5rem;
    }

    #navigation-pane, #info-panel, #visualization-pane {
        grid-column: span 1;
    }
}