/*
 * Shader Forge - Canvas
 * Canvas panel, error display
 */

.canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    position: relative;
}

.shader-canvas {
    width: 100%;
    height: 100%;
    max-width: min(700px, calc(100vh - 200px));
    max-height: min(700px, calc(100vh - 200px));
    aspect-ratio: 1;
    border-radius: 8px;
    box-shadow: var(--shadow-glow);
    background: #000;
}

/* Error Display */
.error-display {
    position: absolute;
    bottom: var(--space-lg);
    left: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: #f87171;
    max-height: 120px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
}

.error-display.visible {
    opacity: 1;
    visibility: visible;
}

/* Exit Fullscreen Button */
.exit-fullscreen-btn {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 100;
}

.exit-fullscreen-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Fullscreen styles for canvas-container */
.canvas-container:fullscreen,
.canvas-container:-webkit-full-screen {
    background: #000;
    padding: 0;
}

.canvas-container:fullscreen .shader-canvas,
.canvas-container:-webkit-full-screen .shader-canvas {
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
}

.canvas-container:fullscreen .exit-fullscreen-btn,
.canvas-container:-webkit-full-screen .exit-fullscreen-btn {
    display: flex;
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .canvas-container {
        padding: var(--space-sm);
    }

    .shader-canvas {
        max-width: 100%;
        max-height: 100%;
        border-radius: 6px;
    }

    .error-display {
        bottom: var(--space-sm);
        left: var(--space-sm);
        right: var(--space-sm);
        padding: var(--space-sm);
        font-size: 0.65rem;
        max-height: 80px;
    }
}