/* free-cover-designer/css/style.css */
:root {
    --sidebar-icon-width: 60px;
    --sidebar-panel-width: 340px;
    --inspector-panel-width: 300px;
}

body {
    overflow: hidden;
    font-family: sans-serif;
}

.app-container {
    height: 100vh;
}

.main-content {
    height: calc(100vh - 56px);
}

/* --- Icon Bar --- */
.sidebar-nav {
    width: var(--sidebar-icon-width);
    background-color: #343a40;
    padding-top: 0.5rem;


    flex-shrink: 0;
    z-index: 1050;
    height: 100%;
    border-right: 1px solid #495057;


    flex-wrap: nowrap;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}


.sidebar-nav::-webkit-scrollbar {
    display: none;
}

.sidebar-nav .nav-link {
    color: #adb5bd;
    padding: 0.8rem 0;
    border-radius: 0;
    cursor: pointer;
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

.sidebar-nav .nav-link.active {
    background-color: #0d6efd;
    color: #fff;
}

.sidebar-nav .nav-link:hover:not(.active) {
    background-color: #495057;
    color: #f8f9fa;
}

.sidebar-nav .nav-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    background-color: transparent !important;
    color: #6c757d !important;
}

/* --- Sliding Panels Container --- */
#sidebar-panels-container {
    position: absolute;
    top: 0;
    left: 0;
    width: var(--sidebar-panel-width);
    height: 100%;
    background-color: #f8f9fa;
    z-index: 1045;
    transform: translateX(calc(-1 * var(--sidebar-panel-width)));
    transition: transform 0.3s ease-in-out;
    box-shadow: 3px 0 6px rgba(0, 0, 0, 0.15);
    border-right: 1px solid #dee2e6;
    display: flex;
    flex-direction: column;
}

#sidebar-panels-container.open {
    transform: translateX(var(--sidebar-icon-width));
}

/* --- Individual Sidebar Panels --- */
.sidebar-panel {
    display: none;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    flex-direction: column;
    background-color: #f8f9fa;
}

.sidebar-panel.active {
    display: flex;
}

/* Panel Content Structure */
.panel-content-wrapper {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.panel-header {
    padding: 0.5rem 0.75rem;
    background-color: #e9ecef;
    border-bottom: 1px solid #dee2e6;
    font-weight: bold;
    color: #495057;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 10;
}


.panel-header input.form-control {
    margin-bottom: 0;
}


.panel-scrollable-content {

    overflow-y: auto;
    overflow-x: hidden;

}

/* --- Item Grids (General) --- */
.item-grid {
}

/* --- Template and Cover Specific Grid --- */
#templateList.item-grid,
#coverList.item-grid,
#elementList.item-grid,
#overlayList.item-grid {
    margin:0px !important;
}


/* --- Item Thumbnails (General) --- */
.item-grid .item-thumbnail {
    position: relative;
    border: 1px solid #ddd;
    cursor: pointer;
    text-align: center;
    background-color: #fff;
    transition: transform 0.1s ease-in-out, border-color 0.1s ease-in-out;
    overflow: hidden;
    align-items: center;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 3px;
    box-sizing: border-box;
}

.item-grid .template-thumbnail,
.item-grid .cover-thumbnail,
.item-grid .element-thumbnail,
.item-grid .overlay-thumbnail {
    margin-bottom:10px;
    background-color: #fff;

    background-image: linear-gradient(45deg, #eee 25%, transparent 25%), linear-gradient(-45deg, #eee 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #eee 75%), linear-gradient(-45deg, transparent 75%, #eee 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}


.item-grid .item-thumbnail:hover {
    border-color: #0d6efd;
    transform: translateY(-2px);
}

.item-grid .item-thumbnail:active {
    border-color: #0a58ca;
}

/* --- Thumbnail Image Styling & Loading --- */
.item-grid .item-thumbnail img {

    object-fit: contain;
    margin-bottom: 3px;
    display: block;
    transition: opacity 0.3s ease-in-out;
    opacity: 0;
    position: relative;
    z-index: 1;

}



.item-grid .template-thumbnail img,
.item-grid .cover-thumbnail img,
.item-grid .element-thumbnail img,
.item-grid .overlay-thumbnail img {
    width: 100%;
    height: auto;
    max-height: none;
}


.item-grid .item-thumbnail.loaded img {
    opacity: 1;
}

.item-grid .item-thumbnail.loading img {
    opacity: 0 !important;
}


.item-grid .thumbnail-spinner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    border-radius: inherit;
    transition: opacity 0.3s ease-in-out;
    opacity: 0;
    pointer-events: none;
}


.item-grid .item-thumbnail.loading .thumbnail-spinner-overlay {
    opacity: 1;
}

/* --- Thumbnail Name Span --- */
.item-grid .item-thumbnail span {
    display: block;
    background-color: #fff;
    font-size: 0.75rem;

    padding-top: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: calc(100% - 6px);
    color: #495057;
    line-height: 1.2;
    position: relative;
    z-index: 1;
}

/* --- Canvas Area --- */
#canvas-area {
    background-color: #6c757d;
    position: relative;
    overflow: auto;
    cursor: grab;
    flex-grow: 1;

}

#canvas-area.panning {
    cursor: grabbing;
}

#canvas-wrapper {
    margin: 500px 1000px;
    padding: 0;
    position: relative;
    display: block;
}

#canvas {
    overflow: hidden;
    position: relative;
    transform-origin: top left;
    border: none;
    margin: 0;
    display: block;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    -webkit-user-select: none; /* Safari */
    -ms-user-select: none; /* IE 10 and IE 11 */
    user-select: none; /* Standard syntax */
}

/* --- Canvas Elements --- */
.canvas-element {
    position: absolute;
    cursor: grab;

    border: none;
    box-sizing: border-box;
}

.canvas-element.moveable-dragging, .canvas-element.moveable-resizing, .canvas-element.moveable-scaling, .canvas-element.moveable-rotating {
    z-index: 1001 !important;
    opacity: 0.7;
    cursor: default;
}

.canvas-element.selected {
    /*border: 1px dashed #0d6efd;*/
    z-index: 1001 !important;
    /*opacity: 0.7 !important;*/
}

.canvas-element.locked {
    cursor: default;
    pointer-events: none;
}

.canvas-element.interactions-disabled {
    cursor: default !important;
}

.moveable-control {
    background: #0d6efd !important;
    border: 1px solid #fff !important;
    width: 10px !important;
    height: 10px !important;
    border-radius: 50% !important;
    margin-top: -5px !important;
    margin-left: -5px !important;
}

.moveable-line.moveable-guideline {
    background: #ff4444 !important;
    opacity: 0.9;
    border: 1px solid #ccc;
}

.canvas-element img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
    pointer-events: none;
}

.canvas-element .text-content {
    width: 100%;
    height: 100%;
    overflow: hidden;
    user-select: none;
    white-space: pre-wrap;
    word-wrap: break-word;
    cursor: text;
    box-sizing: border-box;
}




/* --- Layers Panel (Inside Sliding Panel) --- */
#layerList {

    background-color: transparent;
}

#layerList .list-group-item {
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    user-select: none;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #eee;
    transition: background-color 0.15s ease-in-out;
    color: #212529;
}

#layerList .list-group-item:first-child {
    border-top: none;
}

#layerList .list-group-item:last-child {
    border-bottom: none;
}

#layerList .list-group-item:hover:not(.active) {
    background-color: #e9ecef;
}

#layerList .list-group-item.active {
    background-color: #cfe2ff;
    border-color: #b6d4fe;
    color: #000;
}

#layerList .layer-icon {
    width: 16px;
    min-width: 16px;
    vertical-align: middle;
    text-align: center;
    color: #6c757d;
}

#layerList .list-group-item.active .layer-icon {
    color: #0d6efd;
}

#layerList .layer-name {
    min-width: 50px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.9em;
    line-height: 1.2;
}

#layerList .layer-name-display {
    font-size: 0.9em;
    line-height: 1.2;
    display: inline-block;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
    cursor: text;
}

#layerList .layer-name-input {
    padding: 0.1rem 0.25rem;
    height: auto;
    line-height: inherit;
    font-size: 0.9em;
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #0d6efd;
    outline: none;
}

#layerList .layer-controls button {
    font-size: 0.8em;
    line-height: 1;
    vertical-align: middle;
    color: #6c757d;
}

#layerList .layer-controls button:hover {
    color: #000;
    background-color: #dee2e6;
}

#layerList .layer-controls .lock-icon.locked {
    color: #dc3545;
}

#layerList .list-group-item.active .layer-controls button {
    color: #0d6efd;
}

#layerList .list-group-item.active .layer-controls button:hover {
    color: #0a58ca;
    background-color: #b6d4fe;
}

#layerList .list-group-item.active .layer-controls .lock-icon.locked {
    color: #dc3545;
}

/* jQuery UI Sortable Placeholder */
.ui-sortable-placeholder {
    border: 1px dashed #ccc !important;
    background-color: #f0f0f0 !important;
    height: 45px;
    visibility: visible !important;
    margin-bottom: 1px;
}

/* jQuery UI Sortable Helper (the item being dragged) */
.ui-sortable-helper {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    background-color: #fff;
    opacity: 0.9;
    border: 1px solid #ccc;
}

/* Utility */
.d-none {
    display: none !important;
}

.canvas-element.layer-hidden {
    display: none !important;
}

#layerList .list-group-item.layer-item-hidden {
    opacity: 0.6;
}

#layerList .list-group-item.layer-item-hidden .layer-name {
    font-style: italic;
}

#layerList .list-group-item.layer-item-hidden .layer-icon {
}

#layerList .list-group-item.layer-item-hidden .layer-controls .fa-eye-slash {
    color: #dc3545;
}

/* --- Zoom Controls --- */
#zoom-controls {
    border-radius: 0.25rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    background-color: rgba(33, 37, 41, 0.85);
}

#zoom-controls .btn {
    line-height: 1;
    color: #f8f9fa;
    background-color: transparent;
    border: none;
    padding: 0.4rem 0.6rem;
    font-size: 1em;
}

#zoom-controls .btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

#zoom-controls .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#zoom-percentage-toggle {
    min-width: 55px;
    font-size: 0.9em;
    padding: 0.4em 0.6em;
    vertical-align: middle;
    text-align: center;
    color: #f8f9fa;
    background-color: transparent;
    border: none;
}

#zoom-percentage-toggle:hover, #zoom-percentage-toggle:focus, #zoom-percentage-toggle.show {
    background-color: rgba(255, 255, 255, 0.1);
    color: #f8f9fa;
    box-shadow: none;
}

#zoom-options-menu {
    min-width: auto;
    font-size: 0.9em;
    margin-bottom: 0.25rem !important;
}

#zoom-options-menu .dropdown-item {
    padding: 0.3rem 0.8rem;
}

#zoom-options-menu .dropdown-item:active {
    background-color: #0d6efd;
    color: #fff;
}

/* --- Upload Preview --- */
#uploadPreview img {
    max-width: 100%;
    max-height: 150px;
    object-fit: contain;
    border: 1px solid #ddd;
    padding: 2px;
    background-color: #fff;
}

.dropdown-menu {
    z-index: 1080 !important;
}


/* --- Inspector Panel (Right Side) --- */

.inspector-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: var(--inspector-panel-width);
    height: 100%;
    background-color: #f8f9fa;
    border-left: 1px solid #dee2e6;
    overflow-y: auto;
    font-size: 0.85rem;
    z-index: 1045;
    transform: translateX(var(--inspector-panel-width));
    transition: transform 0.3s ease-in-out;
    box-shadow: -3px 0 6px rgba(0, 0, 0, 0.15);

    display: flex;
    flex-direction: column;
}

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


.close-inspector-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 15;
    padding: 0.25rem 0.5rem;
    background-color: transparent;
    border: none;
    opacity: 0.6;
}

.close-inspector-btn:hover {
    opacity: 1;
}

.inspector-panel .section-header {
    font-size: 0.9rem;
    font-weight: bold;
    color: #495057;
    padding: 0.25rem 1rem 0.25rem;
    border-bottom: 1px solid #e9ecef;
    margin-bottom: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.inspector-panel .section-content {
    padding: 0.75rem 1rem;
}

.inspector-panel .form-label {
    margin-bottom: 0.2rem;
    font-size: 0.8rem;
    color: #6c757d;
}

.inspector-panel .form-control,
.inspector-panel .form-select,
.inspector-panel .btn {
    font-size: 0.8rem;
}

.inspector-panel .btn.disabled,
.inspector-panel .btn:disabled {
    opacity: 0.5 !important;
    cursor: not-allowed !important;
    pointer-events: none !important;
}

.inspector-panel .input-group-text {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
}

.inspector-panel .form-range::-webkit-slider-thumb {
    background: #0d6efd;
}

.inspector-panel .form-range::-moz-range-thumb {
    background: #0d6efd;
}

.inspector-panel .btn-group .btn {
    padding: 0.3rem 0.5rem;
}

.inspector-panel .form-control-color {
    padding: 0.1rem;
    min-width: 30px;
    height: calc(1.5em + 0.5rem + 2px);
}

.inspector-panel .alignment-icons .btn {
    flex: 1;
}

.inspector-panel .color-input-group {
    display: flex;
    align-items: center;
}

.inspector-panel .color-input-group .form-control-color {
    flex-shrink: 0;
    width: 40px;
    margin-right: 5px;
}

.inspector-panel .color-input-group .form-control {
    flex-grow: 1;
    min-width: 80px;
}

.inspector-panel .opacity-label {
    width: 50px;
    text-align: right;
}

.inspector-text-style-btn.active {
    background-color: #0d6efd;
    color: white;
    border-color: #0d6efd;
}

.inspector-shading-preset {
    border: 1px solid #ccc;
    padding: 5px;
    cursor: pointer;
    background-color: #fff;
    margin: 2px;
    transition: border-color 0.15s ease-in-out;
}

.inspector-shading-preset.active {
    border-color: #0d6efd;
    box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.25);
}

.inspector-shading-preset img {
    max-width: 100%;
    display: block;
}

#inspector-layer-info-actions .section-header {
    border-bottom: none;
    padding-bottom: 0;
    padding-top: 0.5rem;
}

#inspector-layer-name {
    font-size: 0.95rem;
    font-weight: bold;
    color: #343a40;
    display: block;
    max-width: calc(var(--inspector-panel-width) - 100px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-right: 1rem;
}

#inspector-layer-info-actions .section-content {
    border-bottom: 1px solid #e9ecef;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

#inspector-layer-info-actions .btn-group .btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

#export-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: wait;
}

#export-overlay .export-spinner-content {
    text-align: center;
}

#export-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
}

#export-overlay p {
    font-size: 1.1rem;
    margin-top: 1rem;
}


#canvasPreviewContainer {
    min-height: 250px;
    background-color: #e9ecef;
    border-radius: 0.25rem;
    padding: 10px;
}

#canvasPreviewArea {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    overflow: hidden;
    transition: opacity 0.2s ease-in-out;
}

#previewBack,
#previewSpine,
#previewFront {
    box-sizing: border-box;
    border: 1px solid #6c757d;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.7rem;
    color: #495057;
    overflow: hidden;
    white-space: normal;
    padding: 2px;
    transition: width 0.2s ease-in-out, height 0.2s ease-in-out, opacity 0.2s ease-in-out;
}

#previewBack {
    background-color: #f8f9fa;
    border-right: none;
}

#previewSpine {
    background-color: #dee2e6;
    border-left: 1px dashed #6c757d;
    border-right: 1px dashed #6c757d;
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

#previewFront {
    background-color: #f8f9fa;
    border-left: none;
}


#canvasPreviewArea > #previewSpine:not([style*="display: none"]) + #previewFront {
    border-left: none;
}

#canvasPreviewArea > #previewBack:not([style*="display: none"]) + #previewSpine {
    border-left: 1px dashed #6c757d;
}

#canvasPreviewArea > #previewBack:not([style*="display: none"]) + #previewFront:only-child {

    border-left: 1px solid #6c757d;
}



#canvasSizePresetGroup .form-check {
    margin-bottom: 0.5rem;
}


.modal-body .invalid-feedback {
    margin-top: 0.25rem;
    width: 100%;
}

/* --- Canvas Size Modal Theming --- */
#canvasSizeModal .modal-content-editor-theme {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    color: #495057;
}

#canvasSizeModal .modal-header {
    background-color: #e9ecef;
    border-bottom: 1px solid #dee2e6;
    padding: 0.6rem 0.8rem;
    border-top-left-radius: 3px;
    border-top-right-radius: 3px;
}

#canvasSizeModal .modal-header .modal-title {
    font-size: 1rem;
    font-weight: bold;
    color: #495057;
}

#canvasSizeModal .modal-header .btn-close {
    filter: invert(30%) grayscale(100%) brightness(100%);
    opacity: 0.7;
}

#canvasSizeModal .modal-header .btn-close:hover {
    opacity: 1;
}


#canvasSizeModal .modal-body {
    padding: 0.8rem;
    font-size: 0.85rem;
}

#canvasSizeModal .modal-footer {
    background-color: #f8f9fa;
    border-top: 1px solid #e9ecef;
    padding: 0.6rem 0.8rem;
    border-bottom-left-radius: 3px;
    border-bottom-right-radius: 3px;
}


#canvasSizeModal .modal-body .mb-1 {
    margin-bottom: 0.25rem !important;
}

#canvasSizeModal .modal-body .mb-2 {
    margin-bottom: 0.5rem !important;
}

#canvasSizeModal .modal-body .mb-3 {
    margin-bottom: 0.75rem !important;
}


#canvasSizeModal .modal-body .mt-1 {
    margin-top: 0.25rem !important;
}


#canvasSizeModal .form-label-sm {
    font-size: 0.75rem;
    margin-bottom: 0.15rem;
    color: #6c757d;
}

#canvasSizeModal .form-control-sm,
#canvasSizeModal .form-select-sm {
    font-size: 0.8rem;
    border-radius: 3px;
    border-color: #ced4da;
}

#canvasSizeModal .form-control-sm:focus,
#canvasSizeModal .form-select-sm:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}


#canvasSizeModal .form-check-sm .form-check-input {
    width: 0.9em;
    height: 0.9em;
    margin-top: 0.2em;
}

#canvasSizeModal .form-check-sm .form-check-label {
    font-size: 0.85rem;
    padding-left: 0.3em;
}

#canvasSizeModal .btn-sm {
    font-size: 0.8rem;
    padding: 0.25rem 0.6rem;
    border-radius: 3px;
}

#canvasSizeModal .btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

#canvasSizeModal .btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

#canvasSizeModal .invalid-feedback {
    font-size: 0.75rem;
    margin-top: 0.15rem;
}

/* Preview Area Adjustments */
#canvasPreviewContainer {
    background-color: #e9ecef;
    border-radius: 3px;
    padding: 8px;
    min-height: 200px;
}

#previewBack, #previewSpine, #previewFront {
    border: 1px solid #adb5bd;
    font-size: 0.65rem;
    padding: 1px;
    border-radius: 2px;
}

#previewSpine {
    border-left: 1px dashed #adb5bd;
    border-right: 1px dashed #adb5bd;
    background-color: #dee2e6;
}

#previewBack, #previewFront {
    background-color: #f8f9fa;
}


#canvasPreviewArea > #previewSpine:not([style*="display: none"]) + #previewFront {
    border-left: none;
}

#canvasPreviewArea > #previewBack:not([style*="display: none"]) + #previewSpine {
    border-left: 1px dashed #adb5bd;
}

.canvas-guide {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: rgba(255, 0, 255, 0.7);
    border-left: 1px dashed rgba(0, 0, 0, 0.5);
    z-index: 500;
    pointer-events: none;
    box-sizing: border-box;
}

.canvas-safe-zone {
    border: 2px dashed rgba(255, 0, 255, 0.7);
    z-index: 500;
    pointer-events: none;
    box-sizing: border-box;
}

#locked-selection-highlight {
    position: absolute;
    border: 2px dashed #0d6efd;
    pointer-events: none;
    z-index: 990;
    box-sizing: border-box;
    display: none;
    transform-origin: center center;
}

.font-picker {
    min-width: 200px !important;
}