/* Canvas Panel - Responsive */
.canvas-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: var(--canvas-width);
    height: 100vh;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    z-index: 15;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: var(--transition);
}

.canvas-panel.open {
    transform: translateX(0);
}

.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    min-height: 60px;
}

.canvas-title {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.canvas-title span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.canvas-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    flex-shrink: 0;
}

.canvas-toolbar {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-wrap: wrap;
    min-height: 48px;
}

.toolbar-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
    flex-shrink: 0;
}

.toolbar-btn:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.toolbar-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.close-btn {
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.close-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.canvas-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

.canvas-content {
    flex: 1;
    background: var(--bg-primary);
    border: none;
    padding: 20px;
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    resize: none;
    outline: none;
    overflow-y: auto;
    white-space: pre-wrap;
    color: var(--text-primary);
    scrollbar-width: thin;
    scrollbar-color: var(--accent-light) transparent;
    min-height: 0;
}

.canvas-content::-webkit-scrollbar {
    width: 6px;
}

.canvas-content::-webkit-scrollbar-thumb {
    background-color: var(--accent-light);
    border-radius: 3px;
}

.canvas-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 60px;
}

.canvas-info {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.canvas-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.canvas-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.canvas-btn.primary {
    background: var(--accent-color);
    color: white;
}

.canvas-btn.primary:hover {
    background: var(--accent-hover);
}

.canvas-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.canvas-btn.secondary:hover {
    background: var(--bg-secondary);
}

/* Toggle canvas button */
.toggle-canvas-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 10;
    transition: var(--transition);
}

.toggle-canvas-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

/* Mobile Responsive Styles */
@media (max-width : 1268px) {
    .toggle-canvas-btn {
       bottom: 14.5%;
    z-index: 101;}
}
@media (max-width: 768px) {
    .canvas-panel {
        width: 100vw;
        max-width: 100vw;
        left: 0;
        right: 0;
    }
    
    .canvas-header {
        padding: 12px 16px;
    }
    
    .canvas-title {
        font-size: 14px;
    }
    
    .canvas-title span {
        display: none;
    }
    
    .canvas-toolbar {
        padding: 8px 16px;
        gap: 6px;
    }
    
    .toolbar-btn {
        padding: 8px 10px;
        font-size: 11px;
    }
    
    .toolbar-btn span {
        display: none;
    }
    
    .canvas-content {
        padding: 16px;
        font-size: 13px;
    }
    
    .canvas-footer {
        padding: 12px 16px;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .canvas-info {
        text-align: center;
        font-size: 11px;
    }
    
    .canvas-actions {
        justify-content: center;
    }
    
    .canvas-btn {
        flex: 1;
        padding: 10px 12px;
        font-size: 12px;
    }
    
    .toggle-canvas-btn {
       bottom: 14.5%;
        right: 16px;
        width: 48px;
        height: 48px;
    }
}

@media (max-width: 480px) {
    .canvas-header {
        padding: 10px 14px;
    }
    
    .canvas-toolbar {
        padding: 6px 14px;
        gap: 4px;
    }
    
    .toolbar-btn {
        padding: 6px 8px;
        min-width: 32px;
        justify-content: center;
    }
    
    .canvas-content {
        padding: 12px;
        font-size: 12px;
    }
    
    .canvas-footer {
        padding: 10px 14px;
    }
    
    .toggle-canvas-btn {
        bottom: 14%;
        right: 12px;
        width: 44px;
        height: 44px;
        z-index:101;
    }
}

/* Tablet Responsive */
@media (min-width: 769px) and (max-width: 1024px) {
    .canvas-panel {
        max-width: 400px;
    }
    
    .main-content.with-canvas {
        margin-right: 400px;
    }
}

/* Large screens */
@media (min-width: 1200px) {
    .canvas-panel {
        max-width: 420px;
    }
}