html { height: 100%; }
body {
    height: 100%;
    margin: 0;
    background: #111;
    display: flex;
    flex-direction: column;
    justify-content: space-between; 
    align-items: center;
    font-family: 'Courier Prime', monospace;
    color: #e2e8f0;
    padding: 0;
    box-sizing: border-box;
    overflow: hidden;
}

.header-container {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}

.top-left-buttons {
    display: flex;
    gap: 15px;
}

h1 {
    margin: 0; 
    text-align: center;
    flex-grow: 1; 
}

.spacer {
    width: 96px; 
}

.main-content {
    display: flex;
    align-items: center;
    gap: 20px; 
    flex-grow: 1; 
    justify-content: center; 
    padding-bottom: 20px; 
}

canvas {
    width: 75vw;
    height: calc(75vh - 120px); 
    border: 4px solid #f87171; 
    border-radius: 12px;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.5);
    display: block;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    background-color: #000;
}

.right-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.icon-button, .action-icon-button {
    background-image: linear-gradient(to right, #6a11cb 0%, #2575fc 100%);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 8px;
    border: none;
    font-size: 1.5rem; 
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    outline: none;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none; 
}

.icon-button:hover, .action-icon-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.4);
}

.icon-button:active, .action-icon-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.footer-text {
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #a0aec0;
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 10px;
        padding: 10px;
    }

    .top-left-buttons {
        width: 100%;
        justify-content: center;
    }

    h1 {
        font-size: 2rem;
    }

    .spacer {
        display: none;
    }

    .main-content {
        flex-direction: column;
        gap: 15px;
    }

    canvas {
        width: 90vw;
        height: 60vh; 
    }

    .right-buttons {
        flex-direction: row; 
        width: 90vw;
        justify-content: center;
    }

    .icon-button, .action-icon-button {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }

    .footer-text {
        font-size: 0.8rem;
        margin-bottom: 10px;
    }
}