body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.back-link {
    position: absolute;
    top: 20px;
    left: 20px;
    color: #007bff;
    text-decoration: none;
    font-size: 14px;
}

.back-link:hover {
    text-decoration: underline;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    position: relative;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.main-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
    margin: 20px 0;
    min-height: 600px;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    border: 1px solid #e9ecef;
    height: fit-content;
}

.control-group {
    background: white;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    overflow: hidden;
    min-width: 0;
}

.control-group h3 {
    margin-top: 0;
    margin-bottom: 8px;
    color: #495057;
    font-size: 13px;
}

.canvas-container {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    background: #f8f9fa;
    border-radius: 10px;
    border: 1px solid #e9ecef;
    padding: 20px;
}

canvas {
    border: 2px solid #ddd;
    border-radius: 10px;
    background: #f8f9fa;
    cursor: grab;
}

canvas:active {
    cursor: grabbing;
}

.zoom-controls {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.9);
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.zoom-controls button {
    background: #007bff;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    margin: 2px;
    font-size: 12px;
}

.zoom-controls button:hover {
    background: #0056b3;
}

.zoom-info {
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}

input[type="number"] {
    width: 60px;
    padding: 5px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    margin: 2px;
}

button {
    background: #007bff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin: 5px;
    transition: background 0.3s;
}

button:hover {
    background: #0056b3;
}



.transformation-info {
    margin: 8px 0;
    font-family: 'Courier New', monospace;
    font-size: 11px;
    color: #333;
    background: #f8f9fa;
    padding: 8px;
    border-radius: 8px;
    border: 2px solid #e9ecef;
    text-align: center;
    line-height: 1.3;
}

.transformation-info div {
    margin: 2px 0;
}

.matrix-bracket {
    font-size: 24px;
    color: #495057;
    margin: 0 5px;
}

.matrix-row {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 5px 0;
}

.matrix-element {
    display: inline-block;
    width: 60px;
    text-align: center;
    margin: 0 10px;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.preset-btn {
    background: #28a745;
}

.preset-btn:hover {
    background: #1e7e34;
}

.vector-input {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
}

.legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 10px 0;
    font-size: 14px;
}

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

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 3px;
}

.matrix-input-container {
    margin: 10px 0;
    font-size: 11px;
    border: 2px solid #333;
    border-radius: 5px;
    padding: 10px;
    background: #f8f9fa;
}

.matrix-row {
    display: flex;
    align-items: center;
    margin: 3px 0;
    gap: 5px;
}

.matrix-row input[type="number"] {
    flex: 1;
    width: 50px;
    padding: 4px;
    border: 1px solid #ced4da;
    border-radius: 3px;
    font-size: 11px;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    
    .controls {
        order: 2;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .canvas-container {
        order: 1;
        min-height: 400px;
    }
    
    .control-group {
        padding: 12px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 15px;
        margin: 10px;
    }
    h1 {
        font-size: 1.8em;
        margin-bottom: 20px;
    }
    .canvas-container {
        margin: 15px 0;
        flex-direction: column;
    }
    canvas {
        max-width: 100%;
        height: auto;
    }
    .zoom-controls {
        position: relative;
        top: auto;
        right: auto;
        margin: 10px 0;
        text-align: center;
        order: -1;
    }
    .controls {
        gap: 10px;
        margin: 15px 0;
    }
    .control-group {
        padding: 10px;
    }
    .control-group h3 {
        font-size: 1.1em;
    }
    .vector-input {
        flex-direction: row;
        align-items: center;
        gap: 10px;
    }
    .vector-input label {
        margin-bottom: 0;
    }
    .preset-buttons {
        flex-direction: column;
    }
    .preset-btn {
        margin-bottom: 5px;
    }
    .legend {
        flex-direction: column;
        gap: 10px;
    }
    .matrix-display {
        font-size: 14px;
        padding: 10px;
    }
    .matrix-element {
        width: 50px;
        margin: 0 5px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    h1 {
        font-size: 1.5em;
    }
    .back-link {
        position: relative;
        top: auto;
        left: auto;
        display: block;
        text-align: center;
        margin-bottom: 15px;
    }
    .control-group {
        padding: 8px;
    }
    .control-group h3 {
        font-size: 1em;
    }
    input[type="number"] {
        font-size: 14px;
        padding: 5px;
    }
    .matrix-display {
        font-size: 12px;
        padding: 8px;
    }
    .matrix-element {
        width: 40px;
        margin: 0 3px;
    }
}