/* Unified Write Mode - Large Canvas + Keyboard Support */

.unified-write-mode {
    width: 100%;
    max-width: none;
    padding: 20px;
}

.large-writing-canvas {
    width: 100%;
    min-height: 300px;
    height: 40vh;
    border: 3px solid #e1e8ed;
    border-radius: 16px;
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 
        inset 0 2px 4px rgba(0,0,0,0.06),
        0 4px 20px rgba(0,0,0,0.1);
    position: relative;
    cursor: text;
    touch-action: none;
    font-family: 'Comic Sans MS', cursive, sans-serif;
    font-size: 32px;
    line-height: 1.4;
    padding: 20px;
    color: #2c3e50;
    overflow: hidden;
}

.large-writing-canvas:focus-within {
    border-color: #3b82f6;
    box-shadow: 
        inset 0 2px 4px rgba(0,0,0,0.06),
        0 4px 20px rgba(59, 130, 246, 0.2),
        0 0 0 3px rgba(59, 130, 246, 0.1);
}

.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.canvas-overlay.active {
    pointer-events: all;
}

.text-input-area {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    background: transparent;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
    resize: none;
    z-index: 2;
}

.text-input-area::placeholder {
    color: #94a3b8;
    opacity: 0.8;
}

.input-mode-selector {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.mode-button {
    padding: 12px 24px;
    border: 2px solid #e1e8ed;
    border-radius: 25px;
    background: white;
    color: #64748b;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
}

.mode-button:hover {
    border-color: #3b82f6;
    color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.mode-button.active {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-color: #1d4ed8;
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.mode-button .icon {
    font-size: 18px;
}

.canvas-controls {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.canvas-controls .btn {
    padding: 12px 20px;
    border: none;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.btn-recognize {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.btn-recognize:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}

.btn-clear {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-clear:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
}

.btn-submit {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
    font-size: 16px;
    padding: 14px 28px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.recognition-feedback {
    margin-top: 15px;
    padding: 12px 20px;
    border-radius: 12px;
    font-weight: 500;
    text-align: center;
    min-height: 24px;
}

.recognition-feedback.success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    border: 1px solid #10b981;
}

.recognition-feedback.processing {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border: 1px solid #f59e0b;
}

.recognition-feedback.error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* Tablet optimizations */
@media (min-width: 768px) {
    .large-writing-canvas {
        min-height: 400px;
        height: 50vh;
        font-size: 36px;
        padding: 30px;
    }
    
    .mode-button {
        padding: 16px 32px;
        font-size: 18px;
    }
    
    .canvas-controls .btn {
        padding: 16px 28px;
        font-size: 16px;
    }
    
    .btn-submit {
        font-size: 18px;
        padding: 18px 36px;
    }
}

/* Large tablets and desktop */
@media (min-width: 1024px) {
    .large-writing-canvas {
        min-height: 450px;
        height: 55vh;
        font-size: 40px;
        padding: 40px;
    }
    
    .unified-write-mode {
        max-width: 1000px;
        margin: 0 auto;
    }
}

/* Stylus and fine pointer support */
@media (pointer: fine) {
    .large-writing-canvas {
        cursor: crosshair;
    }
    
    .text-input-area {
        cursor: text;
    }
}

/* Handwriting mode specific styles */
.handwriting-mode .text-input-area {
    pointer-events: none;
    opacity: 0.3;
}

.handwriting-mode .canvas-overlay {
    pointer-events: all;
}

/* Keyboard mode specific styles */
.keyboard-mode .canvas-overlay {
    pointer-events: none;
}

.keyboard-mode .text-input-area {
    pointer-events: all;
    opacity: 1;
}

/* Visual feedback for active mode */
.handwriting-mode .large-writing-canvas {
    background: linear-gradient(145deg, #f0f9ff 0%, #e0f2fe 100%);
}

.keyboard-mode .large-writing-canvas {
    background: linear-gradient(145deg, #f0fdf4 0%, #dcfce7 100%);
}

/* Input method indicator */
.input-method-indicator {
    position: absolute;
    top: 10px;
    right: 20px;
    background: rgba(0,0,0,0.1);
    color: #64748b;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 3;
}

.handwriting-mode .input-method-indicator {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.keyboard-mode .input-method-indicator {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}