/* ============================================
   Canvas Area Styles
   ============================================ */

/* Canvas Area Container */
.canvas-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    min-height: 0;
}

/* Canvas Settings Bar */
.canvas-settings {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    flex-wrap: wrap;
}

.setting-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.setting-group label {
    font-family: var(--font-ui);
    white-space: nowrap;
}

.setting-group-prompt {
    flex: 1;
}

.setting-group-prompt input[type="text"] {
    flex: 1;
    min-width: 200px;
}

/* Canvas Wrapper */
.canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    overflow: auto;
    min-height: 400px;
}

/* Canvas Container */
.canvas-container {
    position: relative;
    background: #0d0d12;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: 
        inset 0 0 100px rgba(0, 0, 0, 0.5),
        0 0 50px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* Canvas Grid Background */
.canvas-container.show-grid {
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 20px 20px;
    background-color: #0d0d12;
}

/* Main Canvas */
#main-canvas {
    display: block;
    position: relative;
    z-index: var(--z-canvas);
}

/* Elements Layer */
.elements-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-elements);
    pointer-events: none;
}

.elements-layer > * {
    pointer-events: auto;
}

/* Drawing Layer */
.drawing-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-drawing);
    pointer-events: none;
}

.drawing-layer.active {
    pointer-events: auto;
    cursor: crosshair;
}

/* Canvas Actions Bar */
.canvas-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.action-group {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Background color picker */
input[type="color"] {
    width: 36px;
    height: 28px;
    padding: 0;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}

input[type="color"]::-webkit-color-swatch {
    border-radius: 4px;
    border: none;
}

input[type="color"]:hover {
    border-color: var(--neon-cyan);
}

/* Banner Generation Section */
.banner-generation {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    flex-wrap: wrap;
}

.generation-prompt-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    min-width: 300px;
}

.generation-prompt-group label {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.generation-prompt-group input[type="text"],
.generation-prompt-group textarea {
    flex: 1;
    min-width: 200px;
}

.generation-prompt-group textarea {
    resize: vertical;
    min-height: 60px;
    max-height: 150px;
    font-family: var(--font-ui);
    line-height: 1.4;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
}

.generation-prompt-group textarea:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 8px rgba(0, 245, 255, 0.3);
}

.generation-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.versions-count {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.versions-count label {
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.versions-count input[type="number"] {
    width: 60px;
}

/* Canvas Element */
.canvas-element {
    position: absolute;
    display: flex;
    flex-direction: column;
    min-width: 100px;
    min-height: 80px;
    background: rgba(var(--element-color-rgb, 255, 255, 255), 0.1);
    border: 2px solid var(--element-color, rgba(255, 255, 255, 0.3));
    border-radius: var(--radius-lg);
    cursor: move;
    user-select: none;
    transition: box-shadow var(--transition-normal), opacity var(--transition-normal);
    opacity: 0.85;
    overflow: hidden;
}

.canvas-element:hover {
    opacity: 1;
    box-shadow: 0 0 25px rgba(var(--element-color-rgb, 255, 255, 255), 0.3);
}

.canvas-element.selected {
    opacity: 1;
    z-index: var(--z-selected);
    box-shadow: 
        0 0 0 3px var(--element-color, var(--neon-cyan)),
        0 0 30px rgba(var(--element-color-rgb, 0, 245, 255), 0.4);
}

.canvas-element.dragging {
    opacity: 0.9;
    cursor: grabbing;
}

/* Element Header */
.element-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.element-type {
    font-family: var(--font-ui);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--element-color, var(--color-text-secondary));
}

.element-actions {
    display: flex;
    gap: var(--space-xs);
}

.element-action-btn {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 4px;
    font-size: 0.7rem;
    cursor: pointer;
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.element-action-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.2);
}

.element-action-btn.delete:hover {
    background: rgba(255, 0, 0, 0.3);
}

/* Element Content (Flip Card) */
.element-card {
    perspective: 1000px;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.element-inner {
    position: relative;
    flex: 1;
    min-height: 0;
    width: 100%;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-style: preserve-3d;
}

.element-card.flipped .element-inner {
    transform: rotateY(180deg);
}

.element-front,
.element-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
}

.element-back {
    transform: rotateY(180deg);
}

/* Element Prompt Side */
.element-prompt {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--space-sm);
    gap: var(--space-sm);
}

.prompt-textarea {
    flex: 1;
    min-height: 60px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.8rem;
    resize: none;
}

.prompt-textarea:focus {
    outline: none;
    border-color: var(--element-color, var(--neon-cyan));
}

.prompt-textarea::placeholder {
    color: var(--color-text-muted);
}

.element-generate-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: linear-gradient(135deg, var(--element-color, var(--neon-cyan)), rgba(var(--element-color-rgb, 0, 245, 255), 0.5));
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.element-generate-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 0 20px rgba(var(--element-color-rgb, 0, 245, 255), 0.4);
}

.element-generate-btn.generating {
    pointer-events: none;
    background: linear-gradient(
        90deg,
        rgba(var(--element-color-rgb, 0, 245, 255), 0.3) 0%,
        rgba(var(--element-color-rgb, 0, 245, 255), 0.6) 50%,
        rgba(var(--element-color-rgb, 0, 245, 255), 0.3) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Element Content Side (Generated Image) */
.element-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.2);
}

.element-content img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* Resize Handles */
.resize-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--element-color, var(--neon-cyan));
    border: 2px solid white;
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.canvas-element:hover .resize-handle,
.canvas-element.selected .resize-handle {
    opacity: 1;
}

.resize-handle.nw { top: -6px; left: -6px; cursor: nw-resize; }
.resize-handle.ne { top: -6px; right: -6px; cursor: ne-resize; }
.resize-handle.sw { bottom: -6px; left: -6px; cursor: sw-resize; }
.resize-handle.se { bottom: -6px; right: -6px; cursor: se-resize; }

/* Expand Button for long text */
.element-expand-btn {
    position: absolute;
    bottom: var(--space-sm);
    left: 50%;
    transform: translateX(-50%);
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: 0.65rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.element-expand-btn:hover {
    background: rgba(var(--element-color-rgb, 0, 245, 255), 0.2);
    color: var(--element-color, var(--neon-cyan));
}

/* Element Expanded State */
.canvas-element.expanded {
    z-index: 100;
}

.canvas-element.expanded .prompt-textarea {
    min-height: 150px;
}