homeschool/public/handwriting.css

/* Handwriting Recognition Styles */

/* Canvas container */
.handwriting-container {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 1.5rem;
    margin: 1.5rem auto;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border);
    max-width: 600px;
    text-align: center;
}

.handwriting-container.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Canvas element */
#handwritingCanvas {
    border: 2px solid var(--border);
    border-radius: 12px;
    background: white;
    cursor: crosshair;
    display: block;
    margin: 1rem auto;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
    touch-action: none; /* Prevent scrolling on touch devices */
}

#handwritingCanvas:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1), 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Canvas controls */
.canvas-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.canvas-controls button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px;
    min-width: 44px;
}

.canvas-controls .clear-btn {
    background-color: var(--error);
    color: white;
}

.canvas-controls .clear-btn:hover {
    background-color: #dc2626;
    transform: translateY(-1px);
}

.canvas-controls .recognize-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
}

.canvas-controls .recognize-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.canvas-controls .recognize-btn:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.canvas-controls .undo-btn {
    background-color: var(--warning);
    color: white;
}

.canvas-controls .undo-btn:hover {
    background-color: #d97706;
    transform: translateY(-1px);
}

/* Input mode toggle */
.input-mode-toggle {
    display: flex;
    background: var(--secondary);
    border-radius: 12px;
    padding: 0.25rem;
    margin: 1.5rem auto;
    max-width: 300px;
    position: relative;
}

.input-mode-toggle button {
    flex: 1;
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    z-index: 2;
}

.input-mode-toggle button.active {
    background: var(--bg-primary);
    color: var(--primary);
    box-shadow: var(--shadow);
}

.input-mode-toggle button:not(.active):hover {
    color: var(--text-primary);
}

/* Recognition status */
.recognition-status {
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    min-height: 20px;
}

.recognition-status.processing {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.recognition-status.success {
    background-color: #f0fdf4;
    color: var(--success);
    border: 1px solid var(--success);
}

.recognition-status.error {
    background-color: #fef2f2;
    color: var(--error);
    border: 1px solid var(--error);
}

.recognition-status.empty {
    background: transparent;
    border: none;
}

/* Recognized text display */
.recognized-text {
    background: var(--secondary);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    font-size: 1.25rem;
    font-weight: 600;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.recognized-text.has-content {
    background: var(--bg-primary);
    border-color: var(--primary);
    color: var(--primary);
}

/* Handwriting hints */
.handwriting-hints {
    background: var(--secondary);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: left;
}

.handwriting-hints h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.handwriting-hints ul {
    margin: 0;
    padding-left: 1.5rem;
}

.handwriting-hints li {
    margin-bottom: 0.25rem;
}

/* Stroke width selector */
.stroke-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.stroke-controls label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.stroke-width-slider {
    width: 100px;
    height: 6px;
    border-radius: 3px;
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.stroke-width-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: var(--shadow);
}

.stroke-width-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow);
}

/* Color picker */
.color-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.color-picker {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: none;
    cursor: pointer;
    padding: 0;
}

.color-picker:hover {
    border-color: var(--primary);
}

/* Tablet-specific handwriting styles */
@media screen and (min-width: 768px) and (max-width: 1024px) {
    .handwriting-container {
        padding: 2rem;
        margin: 2rem auto;
        max-width: 700px;
    }
    
    #handwritingCanvas {
        width: 100%;
        max-width: 600px;
        height: 300px;
    }
    
    .canvas-controls {
        gap: 1.5rem;
        margin: 1.5rem 0;
    }
    
    .canvas-controls button {
        padding: 1rem 2rem;
        font-size: 1.125rem;
        min-height: 50px;
        min-width: 100px;
    }
    
    .input-mode-toggle {
        max-width: 400px;
        margin: 2rem auto;
    }
    
    .input-mode-toggle button {
        padding: 1rem 2rem;
        font-size: 1.125rem;
    }
    
    .recognized-text {
        font-size: 1.5rem;
        padding: 1.5rem;
        min-height: 60px;
    }
    
    .handwriting-hints {
        padding: 1.5rem;
        font-size: 1rem;
    }
    
    .handwriting-hints h4 {
        font-size: 1.125rem;
    }
}

/* Mobile handwriting adjustments */
@media screen and (max-width: 767px) {
    .handwriting-container {
        margin: 1rem;
        padding: 1rem;
    }
    
    #handwritingCanvas {
        width: 100%;
        height: 250px;
    }
    
    .canvas-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .canvas-controls button {
        width: 100%;
        max-width: 200px;
    }
    
    .input-mode-toggle {
        max-width: 280px;
    }
    
    .stroke-controls,
    .color-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
}

/* Animation for canvas drawing */
@keyframes drawStroke {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.drawing-animation {
    animation: drawStroke 0.1s ease-out;
}

/* Loading spinner for recognition */
.recognition-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 0.5rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Accessibility improvements */
.handwriting-container:focus-within {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.canvas-controls button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    #handwritingCanvas {
        border-width: 3px;
        border-color: #000;
    }
    
    .canvas-controls button {
        border: 2px solid currentColor;
    }
    
    .recognition-status {
        border-width: 2px;
    }
}