/* Canvas Specific Styles */

/* Canvas Container */
.canvas-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: var(--md-sys-spacing-lg);
    background: radial-gradient(circle at center, var(--md-sys-color-surface-variant) 0%, var(--md-sys-color-background) 100%);
}

@media (max-width: 768px) {
    .canvas-container {
        padding: var(--md-sys-spacing-md);
    }
}

/* Main Canvas */
.main-canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--md-sys-shape-corner-large);
    box-shadow: var(--md-sys-elevation-level-3);
    cursor: crosshair;
    touch-action: none;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    background-image:
        linear-gradient(45deg, var(--md-sys-color-surface-variant) 25%, transparent 25%),
        linear-gradient(-45deg, var(--md-sys-color-surface-variant) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--md-sys-color-surface-variant) 75%),
        linear-gradient(-45deg, transparent 75%, var(--md-sys-color-surface-variant) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.main-canvas:hover {
    box-shadow: var(--md-sys-elevation-level-4);
}

/* Canvas Overlay */
.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--md-sys-spacing-lg);
}

/* Hint displayed when no shapes are present */
.canvas-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--md-sys-color-on-surface-variant);
    text-align: center;
    pointer-events: none;
}

/* Canvas Bounds - Removed to eliminate deadzone */

/* Shape Selection */
.shape-selected {
    outline: 2px solid var(--md-sys-color-primary);
    outline-offset: 2px;
}

/* Shape Bounding Box */
.shape-bounding-box {
    position: absolute;
    border: 2px solid var(--md-sys-color-primary);
    border-radius: var(--md-sys-shape-corner-small);
    pointer-events: none;
    z-index: 10;
    background-color: rgba(208, 188, 255, 0.1);
}

.shape-bounding-box::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border: 1px solid var(--md-sys-color-primary);
    border-radius: var(--md-sys-shape-corner-small);
    opacity: 0.3;
}

/* Shape Handles */
.shape-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: var(--md-sys-color-primary);
    border: 2px solid var(--md-sys-color-surface);
    border-radius: 50%;
    cursor: pointer;
    pointer-events: all;
    z-index: 11;
    transition: all 0.2s cubic-bezier(0.4, 0.0, 0.2, 1);
    box-shadow: var(--md-sys-elevation-level-2);
}

.shape-handle:hover {
    transform: scale(1.2);
    box-shadow: var(--md-sys-elevation-level-3);
    background-color: var(--md-sys-color-tertiary);
}

.shape-handle:active {
    transform: scale(0.9);
}

/* Resize Handles */
.shape-handle.resize-nw {
    top: -6px;
    left: -6px;
    cursor: nw-resize;
}

.shape-handle.resize-ne {
    top: -6px;
    right: -6px;
    cursor: ne-resize;
}

.shape-handle.resize-sw {
    bottom: -6px;
    left: -6px;
    cursor: sw-resize;
}

.shape-handle.resize-se {
    bottom: -6px;
    right: -6px;
    cursor: se-resize;
}

.shape-handle.resize-n {
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    cursor: n-resize;
}

.shape-handle.resize-s {
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    cursor: s-resize;
}

.shape-handle.resize-w {
    left: -6px;
    top: 50%;
    transform: translateY(-50%);
    cursor: w-resize;
}

.shape-handle.resize-e {
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    cursor: e-resize;
}

/* Rotate Handle */
.shape-handle.rotate {
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    cursor: grab;
    width: 16px;
    height: 16px;
    background-color: var(--md-sys-color-tertiary);
}

.shape-handle.rotate:hover {
    cursor: grabbing;
    background-color: var(--md-sys-color-primary);
}

.shape-handle.rotate::before {
    content: '⟲';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    color: var(--md-sys-color-on-primary);
    font-weight: bold;
}

/* Move Handle */
.shape-handle.move {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: move;
    width: 20px;
    height: 20px;
    background-color: var(--md-sys-color-secondary);
    opacity: 0.8;
}

.shape-handle.move:hover {
    opacity: 1;
    background-color: var(--md-sys-color-secondary-container);
}

.shape-handle.move::before {
    content: '⋮⋮';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8px;
    color: var(--md-sys-color-on-secondary);
    font-weight: bold;
    line-height: 1;
}

/* Canvas Grid */
.canvas-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0.1;
    background-image: 
        linear-gradient(var(--md-sys-color-outline) 1px, transparent 1px),
        linear-gradient(90deg, var(--md-sys-color-outline) 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: 1;
}

/* Canvas Guides */
.canvas-guide {
    position: absolute;
    background-color: var(--md-sys-color-primary);
    opacity: 0.5;
    pointer-events: none;
    z-index: 6;
}

.canvas-guide.vertical {
    width: 1px;
    top: 0;
    bottom: 0;
}

.canvas-guide.horizontal {
    height: 1px;
    left: 0;
    right: 0;
}

/* Canvas Zoom */
.canvas-zoomed {
    transform-origin: center;
}

/* Canvas Pan */
.canvas-panning {
    cursor: grabbing;
}

.canvas-panning .main-canvas {
    cursor: grabbing;
}

/* Canvas Selection */
.canvas-selecting {
    cursor: crosshair;
}

.canvas-selecting .main-canvas {
    cursor: crosshair;
}

/* Canvas Drawing */
.canvas-drawing {
    cursor: crosshair;
}

.canvas-drawing .main-canvas {
    cursor: crosshair;
}

/* Canvas Text Mode */
.canvas-text-mode {
    cursor: text;
}

.canvas-text-mode .main-canvas {
    cursor: text;
}

/* Canvas Shape Mode */
.canvas-shape-mode {
    cursor: crosshair;
}

.canvas-shape-mode .main-canvas {
    cursor: crosshair;
}

/* Canvas Transform Mode */
.canvas-transform-mode {
    cursor: move;
}

.canvas-transform-mode .main-canvas {
    cursor: move;
}

/* Canvas Resize Mode */
.canvas-resize-mode {
    cursor: se-resize;
}

.canvas-resize-mode .main-canvas {
    cursor: se-resize;
}

/* Canvas Rotate Mode */
.canvas-rotate-mode {
    cursor: grab;
}

.canvas-rotate-mode .main-canvas {
    cursor: grab;
}

/* Canvas Zoom Controls */
.canvas-zoom-controls {
    position: absolute;
    bottom: var(--md-sys-spacing-lg);
    right: var(--md-sys-spacing-lg);
    display: flex;
    gap: var(--md-sys-spacing-xs);
    z-index: 20;
}

.zoom-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0.0, 0.2, 1);
    box-shadow: var(--md-sys-elevation-level-1);
    font-size: 18px;
}

.zoom-btn:hover {
    background-color: var(--md-sys-color-surface-variant);
    box-shadow: var(--md-sys-elevation-level-2);
}

.zoom-btn:active {
    transform: scale(0.95);
}

/* Canvas Info */
.canvas-info {
    position: absolute;
    top: var(--md-sys-spacing-lg);
    left: var(--md-sys-spacing-lg);
    background-color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-small);
    padding: var(--md-sys-spacing-sm) var(--md-sys-spacing-md);
    font-size: var(--md-sys-typescale-label-small-size);
    color: var(--md-sys-color-on-surface-variant);
    z-index: 20;
    box-shadow: var(--md-sys-elevation-level-1);
}

/* Canvas Status */
.canvas-status {
    position: absolute;
    bottom: var(--md-sys-spacing-lg);
    left: var(--md-sys-spacing-lg);
    background-color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-small);
    padding: var(--md-sys-spacing-sm) var(--md-sys-spacing-md);
    font-size: var(--md-sys-typescale-label-small-size);
    color: var(--md-sys-color-on-surface-variant);
    z-index: 20;
    box-shadow: var(--md-sys-elevation-level-1);
}

/* Canvas Loading */
.canvas-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 30;
}

.canvas-loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--md-sys-color-outline);
    border-top-color: var(--md-sys-color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Canvas Error */
.canvas-error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
    padding: var(--md-sys-spacing-lg);
    border-radius: var(--md-sys-shape-corner-large);
    text-align: center;
    z-index: 30;
    box-shadow: var(--md-sys-elevation-level-3);
}

/* Canvas Success */
.canvas-success {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    padding: var(--md-sys-spacing-lg);
    border-radius: var(--md-sys-shape-corner-large);
    text-align: center;
    z-index: 30;
    box-shadow: var(--md-sys-elevation-level-3);
}