/* =====================================================
   Focus Blur - Canvas Styles
   Main canvas area for image editing - Premium Design
   ===================================================== */

.canvas-container {
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    overflow: auto;
    position: relative;
    min-height: 0;
    min-width: 0;
}

/* Center content when not zoomed/scrolling */
.canvas-container:not(.scrolling) {
    align-items: center;
    justify-content: center;
}

/* Subtle grid pattern background */
.canvas-container::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.03) 1px, transparent 0);
    background-size: 24px 24px;
    pointer-events: none;
}

/* Ambient glow effects */
.canvas-container::after {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.canvas-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    overflow: visible;
    flex-shrink: 0;
    z-index: 1;
}

/* When image is loaded */
.canvas-wrapper.has-image {
    background: transparent;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 20px 60px -10px rgba(0, 0, 0, 0.5),
        0 0 100px -20px rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-lg);
}

/* Placeholder State - Premium Design */
.placeholder {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 2px dashed rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-xl);
    width: calc(100vw - 80px);
    height: calc(100vh - 200px);
    max-width: 1400px;
    max-height: 900px;
    min-width: 400px;
    min-height: 300px;
    transition: all var(--transition-normal);
    overflow: hidden;
    cursor: pointer;
}

/* Inner glow effect */
.placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

/* Animated border glow */
.placeholder::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-xl);
    background: linear-gradient(45deg,
            transparent 30%,
            rgba(99, 102, 241, 0.2) 50%,
            transparent 70%);
    background-size: 200% 200%;
    animation: borderGlow 3s ease-in-out infinite;
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.placeholder:hover::after {
    opacity: 1;
}

@keyframes borderGlow {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

.placeholder.hidden {
    opacity: 0;
    pointer-events: none;
    position: absolute;
}

.placeholder:hover {
    border-color: var(--color-primary);
    background: linear-gradient(145deg, var(--bg-tertiary) 0%, var(--bg-elevated) 100%);
    transform: scale(1.005);
    box-shadow:
        0 0 0 1px rgba(99, 102, 241, 0.3),
        0 20px 40px -10px rgba(0, 0, 0, 0.3),
        0 0 60px -10px rgba(99, 102, 241, 0.2);
}

.placeholder.drag-over {
    border-color: var(--color-primary);
    border-style: solid;
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.1) 0%, var(--bg-tertiary) 100%);
    box-shadow:
        0 0 0 2px rgba(99, 102, 241, 0.5),
        inset 0 0 60px rgba(99, 102, 241, 0.1),
        0 0 80px -10px rgba(99, 102, 241, 0.4);
    transform: scale(1.01);
}

.placeholder-content {
    text-align: center;
    padding: var(--spacing-2xl);
    animation: fadeIn 0.5s ease;
    position: relative;
    z-index: 1;
}

.placeholder-icon {
    width: 100px;
    height: 100px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
    opacity: 0.6;
    transition: all var(--transition-normal);
    filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.3));
}

.placeholder:hover .placeholder-icon {
    opacity: 1;
    transform: scale(1.1) translateY(-5px);
    filter: drop-shadow(0 10px 30px rgba(99, 102, 241, 0.5));
}

.placeholder-content h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.placeholder-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.placeholder-content p strong {
    color: var(--color-primary-light);
    font-weight: 600;
    padding: 2px 8px;
    background: rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-sm);
}

.supported-formats {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    display: inline-block;
    margin-top: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

/* Canvas Elements - Hidden by default */
#mainCanvas,
#selectionCanvas {
    display: none;
    max-width: calc(100vw - 360px);
    max-height: calc(100vh - 140px);
    border-radius: var(--radius-md);
}

/* Show canvases when image is loaded */
.canvas-wrapper.has-image #mainCanvas,
.canvas-wrapper.has-image #selectionCanvas,
.canvas-wrapper.has-image #drawingCanvas {
    display: block;
}

#mainCanvas {
    position: relative;
    z-index: 1;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

#selectionCanvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    cursor: crosshair;
}

#drawingCanvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 3;
    pointer-events: none;
}

/* Enable drawing canvas pointer events when drawing tools active */
.canvas-wrapper[data-tool="brush"] #drawingCanvas,
.canvas-wrapper[data-tool="text"] #drawingCanvas {
    pointer-events: auto;
}

/* Canvas States */
.canvas-wrapper.has-image .placeholder {
    display: none;
}

/* Selection Cursors */
.canvas-wrapper[data-tool="circle"] #selectionCanvas,
.canvas-wrapper[data-tool="rectangle"] #selectionCanvas {
    cursor: crosshair;
}

/* Cursor/Move tool */
.canvas-wrapper[data-tool="cursor"] #selectionCanvas,
.canvas-wrapper[data-tool="cursor"] #drawingCanvas {
    pointer-events: auto;
    cursor: default;
}

/* Brush cursor */
.canvas-wrapper[data-tool="brush"] #drawingCanvas {
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="%23ffffff" stroke="%236366f1" stroke-width="1"><circle cx="12" cy="12" r="5"/></svg>') 12 12, crosshair;
}

/* Text cursor */
.canvas-wrapper[data-tool="text"] #drawingCanvas {
    cursor: text;
}

.canvas-wrapper[data-tool="freedraw"] #selectionCanvas {
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="%236366f1" stroke-width="2"><circle cx="12" cy="12" r="3"/></svg>') 12 12, crosshair;
}

.canvas-wrapper.dragging #selectionCanvas {
    cursor: move;
}

.canvas-wrapper.resizing #selectionCanvas {
    cursor: nwse-resize;
}

/* Loading State */
.canvas-wrapper.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(15, 15, 26, 0.9);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    border-radius: var(--radius-lg);
}

.canvas-wrapper.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin: -25px 0 0 -25px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    z-index: 101;
    animation: spin 0.8s linear infinite;
}

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

/* Canvas Responsive */
@media (max-width: 1024px) {
    .canvas-container {
        padding: var(--spacing-md);
    }

    .placeholder {
        width: calc(100vw - 300px);
        height: calc(100vh - 180px);
        min-width: 300px;
        min-height: 250px;
    }

    #mainCanvas,
    #selectionCanvas {
        max-width: calc(100vw - 300px);
        max-height: calc(100vh - 160px);
    }
}

@media (max-width: 768px) {
    .canvas-container {
        padding: var(--spacing-sm);
        padding-bottom: 160px;
    }

    .placeholder {
        width: calc(100vw - 32px);
        height: calc(100vh - 280px);
        min-width: unset;
        min-height: 200px;
    }

    .placeholder-content h2 {
        font-size: 1.3rem;
    }

    .placeholder-icon {
        width: 70px;
        height: 70px;
    }

    #mainCanvas,
    #selectionCanvas {
        max-width: 100%;
        max-height: calc(100vh - 260px);
    }
}