body {
    font-family: "Inter", sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    width: 100%;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    padding: 10px;
}

.control-panel {
    padding: 20px;
    background-color: #f9fafb;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.canvas-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
}

canvas {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    width: 100%;
    max-height: 700px;
    transition: opacity 0.2s ease-in-out;
}

label {
    display: flex;
    flex-direction: column;
    font-weight: 600;
    gap: 6px;
}

button {
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background-color: #4f46e5;
    color: white;
}

.btn-secondary {
    background-color: #6b7280;
    color: white;
}