:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --background-color: #f5f5f5;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    --viewer-bg: #f9f9f9;
    --panel-header-bg: #f5f5f5;
    --hint-color: #bbb;
    --control-hint-color: #777;
    --layer-hover-bg: #f9f9f9;
    --layer-delete-hover: #f44336;
}

.dark-mode {
    --primary-color: #2196F3;
    --primary-dark: #1976D2;
    --background-color: #121212;
    --card-bg: #1E1E1E;
    --text-color: #E0E0E0;
    --text-secondary: #B0B0B0;
    --border-color: #333333;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --hover-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
    --viewer-bg: #262626;
    --panel-header-bg: #262626;
    --hint-color: #666;
    --control-hint-color: #888;
    --layer-hover-bg: #2A2A2A;
    --layer-delete-hover: #FF5252;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--background-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease;
}

input[type="checkbox"] {
    appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 3px;
    background: var(--card-bg);
    cursor: pointer;
    position: relative;
}

input[type="checkbox"]:checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: -3px;
    left: 1px;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

input[type="checkbox"]:indeterminate {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

input[type="checkbox"]:indeterminate::after {
    content: '−';
    position: absolute;
    top: -2px;
    left: 2px;
    color: white;
    font-size: 14px;
    font-weight: bold;
}

input[type="checkbox"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.dark-mode input[type="checkbox"] {
    filter: none;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

.main-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.main-header h1 {
    font-size: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-header h1 i {
    color: var(--primary-color);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 18px;
    cursor: pointer;
    padding: 6px;
    transition: transform 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(30deg);
}

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.left-panel, .right-panel {
    width: 280px;
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.left-panel {
    border-right: 1px solid var(--border-color);
}

.right-panel {
    border-left: 1px solid var(--border-color);
}

.center-panel {
    flex: 1;
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: var(--panel-header-bg);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.panel-header h3 {
    font-size: 14px;
    font-weight: 500;
    margin: 0;
}

#viewer-container {
    flex: 1;
    position: relative;
    background-color: var(--viewer-bg);
    overflow: hidden;
}

.drop-zone {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.drop-zone-hint {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--hint-color);
    pointer-events: none;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.drop-zone-hint i {
    font-size: 32px;
    margin-bottom: 8px;
}

.drop-zone canvas {
    z-index: 1;
}

.drop-zone.dragover .drop-zone-hint {
    color: var(--primary-color);
    opacity: 1;
}

.controls-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px;
    font-size: 12px;
    color: var(--control-hint-color);
    border-top: 1px solid var(--border-color);
    background: var(--card-bg);
    flex-shrink: 0;
}

.viewer-controls {
    position: absolute;
    z-index: 10;
    display: flex;
    gap: 8px;
}

.viewer-controls-center {
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
}

.model-selector {
    display: flex;
    gap: 8px;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 4px;
}

.model-option {
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.model-option input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.model-option i {
    color: white;
    background: none;
    padding: 4px;
    font-size: 14px;
    border-radius: 4px;
    transition: all 0.2s ease;
    opacity: 0.6;
}

.model-option:hover i {
    opacity: 1;
}

.model-option input:checked + i,
.explode-option.active i,
.random-option.active i {
    color: var(--primary-color);
    background-color: rgba(33, 150, 243, 0.3);
    opacity: 1;
}

.normal-male {
    font-size: 16px;
}

.wide-male {
    font-size: 16px;
    transform: scaleX(1.15);
    display: inline-block;
}

.icon-btn-small {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 12px;
}

.icon-btn-small:hover {
    background-color: var(--primary-dark);
}

.layers-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.layer-bulk-select-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: var(--panel-header-bg);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    width: 100%;
    box-sizing: border-box;
}

.layer-bulk-select-bar > div {
    display: flex;
    align-items: center;
    gap: 8px;
}

.layer-bulk-select-bar input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.layer-bulk-select-bar span {
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    user-select: none;
    margin: 0;
}

.layer-bulk-delete-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 12px;
}

.layer-bulk-delete-btn:hover {
    background-color: var(--primary-dark);
}

.layer-item {
    display: flex;
    align-items: flex-start;
    padding: 8px;
    margin-bottom: 4px;
    border-radius: 6px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    cursor: grab;
    position: relative;
    min-height: 60px;
    user-select: none;
}

.layer-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    height: 100%;
}

.layer-controls {
    position: absolute;
    bottom: 8px;
    right: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.layer-actions {
    display: flex;
    flex-direction: row;
    gap: 4px;
    align-items: center;
}

.layer-item:active {
    cursor: grabbing;
}

.layer-item.dragging {
    opacity: 0.3;
    transform: scale(0.98);
}

.layer-item.drag-over-top {
    border-top: 3px solid var(--primary-color);
}

.layer-item.drag-over-bottom {
    border-bottom: 3px solid var(--primary-color);
}

.layer-item:hover {
    background: var(--layer-hover-bg);
}

.layer-item.selected {
    border-color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.layer-item.selected-bulk {
    border-color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.layer-checkbox {
    position: relative;
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
    margin-right: 8px;
    flex-shrink: 0;
    z-index: 5;
}

.layer-thumbnail {
    width: 48px;
    height: 48px;
    background: rgba(127, 127, 127, 0.1);
    border-radius: 4px;
    margin-right: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
    background-size: 8px 8px;
    background-position: 0 0, 0 4px, 4px -4px, -4px 0;
    position: relative;
    cursor: pointer;
}


.layer-thumbnail:hover .front-preview {
    opacity: 0;
}

.layer-thumbnail:hover .back-preview {
    opacity: 1;
}

.layer-thumbnail:hover .preview-label {
    opacity: 1;
}

.layer-thumbnail .preview-label {
    opacity: 0;
    transition: opacity 0.2s ease;
}

.layer-thumbnail canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.layer-thumbnail .back-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.2s ease;
}

@media (max-width: 768px) {
    .layer-thumbnail {
        width: 40px;
        height: 40px;
        margin-right: 6px;
    }
    
    .layer-thumbnail .preview-label {
        font-size: 7px;
        padding: 1px 2px;
    }
}

@media (max-width: 480px) {
    .layer-thumbnail {
        width: 36px;
        height: 36px;
        margin-right: 4px;
    }
    
    .layer-thumbnail .preview-label {
        font-size: 6px;
        padding: 0px 2px;
    }
}

.layer-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.layer-name {
    font-size: 13px;
    font-weight: 500;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.layer-tags {
    display: flex;
    gap: 2px;
    margin: 0;
    flex-shrink: 0;
}

.layer-tag {
    background-color: var(--primary-color);
    color: white;
    font-size: 8px;
    padding: 1px 3px;
    border-radius: 2px;
    white-space: nowrap;
    font-weight: 700;
}

.layer-tag.wide {
    background: #2196F3;
    color: white;
}

.layer-tag.slim {
    background: white;
    color: #2196F3;
}

.layer-resolution {
    font-size: 11px;
    color: var(--text-color);
    opacity: 0.6;
    margin: 0;
    line-height: 1;
}

.layer-visibility, .layer-delete, .layer-save, .layer-download {
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.6;
    transition: color 0.2s;
    padding: 4px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    min-height: 20px;
    border-radius: 3px;
    background: rgba(0, 0, 0, 0.1);
}

.layer-visibility:hover, .layer-save:hover, .layer-download:hover {
    opacity: 1;
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.layer-delete:hover {
    opacity: 1;
    color: var(--layer-delete-hover);
    background: rgba(244, 67, 54, 0.1);
}


.empty-layers-message {
    padding: 30px 15px;
    text-align: center;
    color: var(--hint-color);
    font-size: 12px;
}

.categories-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px;
    border-bottom: 1px solid var(--border-color);
    background: var(--panel-header-bg);
}

.category-tab {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    opacity: 0.7;
    min-width: 36px;
    height: 36px;
    flex: 1;
    position: relative;
}

.category-tab:hover {
    background: var(--layer-hover-bg);
    opacity: 1;
    transform: translateY(-1px);
}

.category-tab.active {
    background: var(--primary-color);
    color: white;
    opacity: 1;
    border-color: var(--primary-color);
}

.category-tab i {
    font-size: 14px;
}

.category-tab[data-category="all"] i,
.category-tab[data-category="store"] i {
    font-size: 12px;
}

.category-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    min-width: 16px;
    height: 16px;
    font-size: 9px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    border: 2px solid var(--card-bg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.category-tab.active .category-badge {
    background: white;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.bulk-select-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: var(--panel-header-bg);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    width: 100%;
    box-sizing: border-box;
}

.bulk-select-bar > div {
    display: flex;
    align-items: center;
    gap: 8px;
}

.bulk-select-bar input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.bulk-select-bar span {
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    user-select: none;
    margin: 0;
}

.bulk-delete-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 12px;
}

.bulk-delete-btn:hover {
    background-color: var(--primary-dark);
}

.selection-info {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 8px 15px;
    background: var(--panel-header-bg);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    width: 100%;
    box-sizing: border-box;
}

.selection-info span {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
}

.clear-selection-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 10px;
    flex-shrink: 0;
}

.clear-selection-btn:hover {
    background-color: var(--primary-dark);
}

.saved-skins-display::-webkit-scrollbar {
    width: 6px;
    -webkit-appearance: none;
}

.saved-skins-display::-webkit-scrollbar-track {
    background: var(--panel-header-bg);
    border-radius: 3px;
    -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.1);
}

.saved-skins-display::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.saved-skins-display::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.saved-skins-display {
    flex: 1;
    overflow-y: scroll;
    overflow-x: hidden;
    padding: 8px;
    background: var(--card-bg);
}

.saved-skins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 8px;
    padding-bottom: 20px;
}

.saved-skins-grid.store-grid {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 8px;
    padding-bottom: 8px;
}

.skin-checkbox {
    position: absolute;
    top: 6px;
    left: 6px;
    z-index: 5;
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.saved-skin-preview {
    flex: 1;
    overflow: hidden;
    background: transparent;
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
}

.saved-skin-preview canvas {
    width: 100%;
    height: 100%;
    display: block;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.saved-skin-preview .back-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.model-type-tag {
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 8px;
    padding: 2px 4px;
    border-radius: 2px;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 5;
    pointer-events: none;
    white-space: nowrap;
    line-height: 1;
    display: inline-block;
    width: auto;
    height: auto;
    min-width: auto;
    min-height: auto;
    max-width: 90%;
    box-sizing: border-box;
}

.model-type-tag.wide {
    background: #2196F3;
    color: white;
    font-weight: 700;
}

.model-type-tag.slim {
    background: white;
    color: #2196F3;
    font-weight: 700;
}

.saved-skin-controls {
    display: none;
    position: absolute;
    top: 4px;
    right: 4px;
    gap: 2px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 4px;
    padding: 2px;
    z-index: 10;
}

.saved-skin-item {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    aspect-ratio: 1;
    margin-bottom: 20px;
}

.saved-skin-item:hover .saved-skin-controls {
    display: flex;
}

@media (max-width: 768px) {
    .saved-skin-controls {
        display: flex;
    }
}

.skin-control-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    border-radius: 2px;
    font-size: 10px;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

.skin-control-btn.download:hover {
    background: #2196F3;
}

.skin-control-btn.edit:hover {
    background: var(--primary-color);
}

.skin-control-btn.delete:hover {
    background: var(--layer-delete-hover);
}

.store-item-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    overflow: visible;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}

.store-item-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

.store-item-card canvas {
    width: 100%;
    height: 100%;
    display: block;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    border-radius: 6px;
}

.empty-skins-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--hint-color);
    font-size: 12px;
    text-align: center;
    min-height: 200px;
}

.empty-skins-message i {
    font-size: 32px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 6px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.info-btn {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 11px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.info-btn:hover {
    opacity: 1;
}

.footer-credit {
    font-size: 11px;
    opacity: 0.7;
}

.footer-credit a {
    color: inherit;
    text-decoration: none;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: var(--shadow);
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2, .modal-header h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 18px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-color);
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: calc(80vh - 80px);
}

.modal-body h3 {
    color: var(--primary-color);
    margin: 15px 0 8px;
    font-size: 16px;
}

.modal-body p {
    margin-bottom: 12px;
    line-height: 1.5;
    font-size: 14px;
}

.modal-body ul {
    padding-left: 20px;
    margin-bottom: 12px;
}

.modal-body li {
    margin-bottom: 6px;
    line-height: 1.4;
    font-size: 14px;
}

.edit-form-group {
    margin-bottom: 15px;
}

.edit-form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-color);
}

.edit-form-group input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 14px;
}

.edit-form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.model-type-selector {
    display: flex;
    gap: 10px;
    margin-top: 5px;
}

.model-type-option {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    font-size: 12px;
}

.model-type-option:hover {
    border-color: var(--primary-color);
}

.model-type-option.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.edit-preview-container {
    display: flex;
    gap: 15px;
    flex: 1;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.skin-texture-preview {
    flex: 0 0 auto;
    width: 160px;
    height: 160px;
    cursor: pointer;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.skin-2d-preview {
    flex: 0 0 auto;
    width: 160px;
    height: 160px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--viewer-bg);
    cursor: pointer;
}

.front-preview, .back-preview {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.edit-form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
    flex-wrap: wrap;
}

.edit-form-actions button {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
    min-width: 80px;
}

.edit-form-actions .btn-cancel {
    background: var(--border-color);
    color: var(--text-color);
}

.edit-form-actions .btn-cancel:hover {
    background: var(--text-secondary);
    color: white;
}

.edit-form-actions .btn-save {
    background: var(--primary-color);
    color: white;
}

.edit-form-actions .btn-save:hover {
    background: var(--primary-dark);
}

.saved-skins-display::-webkit-scrollbar,
.layers-list::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 6px;
}

.saved-skins-display::-webkit-scrollbar-track,
.layers-list::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: var(--panel-header-bg);
    border-radius: 3px;
}

.saved-skins-display::-webkit-scrollbar-thumb,
.layers-list::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.saved-skins-display::-webkit-scrollbar-thumb:hover,
.layers-list::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}


@media (max-width: 768px) {
    body { overflow-y: auto; height: auto; min-height: 100vh; }
    .app-container { height: auto; min-height: 100vh; }
    .main-content { flex-direction: column; overflow: visible; }
    .left-panel, .right-panel { width: 100%; border: none; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); max-height: none; overflow: visible; }
    .left-panel { order: 2; border-right: none; }
    .right-panel { order: 3; border-left: none; }
    .center-panel { order: 1; height: auto; min-height: auto; overflow: visible; }
    #viewer-container { width: 100%; aspect-ratio: 1; height: auto; }
    .saved-skins-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; padding-bottom: 15px; }
    .saved-skins-grid.store-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; padding-bottom: 15px; }
    .modal-content {
        width: 95%;
        max-width: none;
        max-height: 90vh;
        border-radius: 6px;
    }
    .modal-header {
        padding: 12px 15px;
    }
    .modal-header h2, .modal-header h3 {
        font-size: 16px;
    }
    .modal-body {
        padding: 15px;
        max-height: calc(90vh - 60px);
    }
    
    .edit-preview-container {
        flex-direction: row;
        gap: 10px;
    }
    
    .skin-texture-preview {
        width: 140px;
        height: 140px;
    }

    .skin-texture-preview img {
        width: 140px !important;
        height: 140px !important;
    }
    
    .skin-2d-preview {
        width: 140px;
        height: 140px;
    }
    
    .edit-form-actions {
        justify-content: center;
        gap: 8px;
    }
    
    .edit-form-actions button {
        flex: 1;
        min-width: auto;
        max-width: 120px;
    }
    .layer-item {
        min-height: 56px;
        padding: 6px;
        align-items: center;
    }
    
    .layer-controls {
        position: static;
        bottom: auto;
        right: auto;
        margin-left: 8px;
    }
    
    .layer-checkbox {
        width: 14px;
        height: 14px;
        margin-right: 6px;
    }
    
    .layer-thumbnail {
        width: 40px;
        height: 40px;
        margin-right: 6px;
    }
    
    .layer-name {
        font-size: 12px;
    }
    
    .layer-resolution {
        font-size: 10px;
    }
    
    .layer-visibility, .layer-delete, .layer-save, .layer-download {
        min-width: 24px;
        min-height: 24px;
        padding: 6px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .layer-item {
        min-height: 52px;
        padding: 4px;
        align-items: center;
    }
    
    .layer-controls {
        position: static;
        bottom: auto;
        right: auto;
        margin-left: 4px;
    }
    
    .layer-checkbox {
        width: 12px;
        height: 12px;
        margin-right: 4px;
    }
    
    .layer-thumbnail {
        width: 36px;
        height: 36px;
        margin-right: 4px;
    }
    
    .layer-name {
        font-size: 11px;
    }
    
    .layer-resolution {
        font-size: 9px;
    }
    
    .layer-visibility, .layer-delete, .layer-save, .layer-download {
        min-width: 26px;
        min-height: 26px;
        padding: 7px;
        font-size: 16px;
    }
    
    .layer-actions {
        gap: 2px;
    }
    .modal-content {
        width: 98%;
        max-height: 95vh;
        border-radius: 4px;
    }
    
    .modal-header {
        padding: 10px 12px;
    }
    
    .modal-header h2, .modal-header h3 {
        font-size: 14px;
    }
    
    .modal-body {
        padding: 12px;
        max-height: calc(95vh - 50px);
    }
    
    .edit-preview-container {
        flex-direction: row;
        gap: 8px;
    }
    
    .skin-texture-preview {
        width: 120px;
        height: 120px;
    }
    
    .skin-texture-preview img {
        width: 120px !important;
        height: 120px !important;
    }
    
    .skin-2d-preview {
        width: 120px;
        height: 120px;
    }
    
    .edit-form-group {
        margin-bottom: 12px;
    }
    
    .edit-form-group label {
        font-size: 13px;
        margin-bottom: 4px;
    }
    
    .edit-form-group input {
        padding: 6px 10px;
        font-size: 13px;
    }
    
    .model-type-selector {
        gap: 6px;
    }
    
    .model-type-option {
        padding: 6px 8px;
        font-size: 11px;
    }
    
    .edit-form-actions {
        margin-top: 15px;
        gap: 6px;
    }
    
    .edit-form-actions button {
        padding: 6px 12px;
        font-size: 12px;
    }
}

.layer-bulk-merge-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 12px;
}

.layer-bulk-merge-btn:hover {
    background-color: var(--primary-dark);
}

.download-option i {
    color: white;
    background: none;
    padding: 4px;
    font-size: 14px;
    border-radius: 4px;
    transition: all 0.2s ease;
    opacity: 0.6;
}

.download-option:hover i {
    opacity: 1;
}

.download-option.active i {
    color: var(--primary-color);
    background-color: rgba(33, 150, 243, 0.3);
    opacity: 1;
}

.category-name-display {
    display: flex;
    align-items: center;
    padding: 8px 15px;
    background: var(--panel-header-bg);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    text-transform: capitalize;
}

.category-name-display i {
    margin-right: 8px;
    color: var(--primary-color);
}

.category-preview-tags {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.category-preview-tag {
    background: var(--background-color);
    color: var(--text-color);
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 2px;
    font-weight: 600;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

.category-preview-tag.model-wide {
    background: #2196F3;
    color: white;
}

.category-preview-tag.model-slim {
    background: white;
    color: #2196F3;
    border: 1px solid #2196F3;
}

.help-btn {
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 400;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.help-btn:hover {
    background: var(--panel-header-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.help-btn i {
    font-size: 12px;
    opacity: 0.7;
}

.help-btn:hover i {
    opacity: 1;
}

.dark-mode .help-btn {
    background: var(--card-bg);
    border-color: var(--border-color);
}

.dark-mode .help-btn:hover {
    background: var(--panel-header-bg);
    border-color: var(--primary-color);
}

@media (max-width: 480px) {
    .help-btn {
        padding: 5px 10px;
        font-size: 11px;
    }
    
    .help-btn i {
        font-size: 11px;
    }
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 15px 0;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: var(--panel-header-bg);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.step-number {
    background: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 12px;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 4px;
}

.step-content p {
    margin: 0;
    font-size: 13px;
    color: var(--text-secondary);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 8px;
    padding: 8px;
    background: var(--panel-header-bg);
    border-radius: 4px;
}

.feature-list li i {
    color: var(--primary-color);
    margin-top: 2px;
    flex-shrink: 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 8px;
    margin: 10px 0;
}

.category-item {
    background: var(--panel-header-bg);
    padding: 8px;
    border-radius: 4px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.category-item i {
    color: var(--primary-color);
    width: 16px;
}

.tip-list {
    list-style: none;
    padding: 0;
}

.tip-list li {
    background: var(--panel-header-bg);
    padding: 8px 12px;
    border-radius: 4px;
    margin-bottom: 6px;
    font-size: 13px;
    position: relative;
    padding-left: 30px;
}

.tip-list li::before {
    content: "💡";
    position: absolute;
    left: 8px;
    top: 8px;
}

.privacy-note {
    background: var(--panel-header-bg);
    padding: 12px;
    border-radius: 6px;
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    border: 1px solid var(--border-color);
}

.privacy-note i {
    color: var(--primary-color);
}

.quick-start {
    background: var(--panel-header-bg);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.quick-start h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.quick-start .steps {
    background: none;
}

.quick-start .step {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
}

.quick-start .step-content strong {
    color: var(--primary-color);
}

.quick-start .step-content p {
    color: var(--text-secondary);
}

.quick-start .step-number {
    background: var(--primary-color);
    color: white;
}

@media (max-width: 768px) {
    .quick-start {
        padding: 15px;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .step {
        padding: 10px;
    }
    
    .step-number {
        width: 20px;
        height: 20px;
        font-size: 11px;
    }
}

.layer-category-icon {
    position: absolute;
    top: 6px;
    right: 6px;
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-color);
    font-size: 10px;
    padding: 4px;
    border-radius: 50%;
    z-index: 5;
    pointer-events: none;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.dark-mode .layer-category-icon {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-color);
}

@media (max-width: 768px) {
    .layer-category-icon {
        top: 4px;
        right: 4px;
        width: 18px;
        height: 18px;
        font-size: 9px;
        padding: 3px;
    }
}

@media (max-width: 480px) {
    .layer-category-icon {
        top: 3px;
        right: 3px;
        width: 16px;
        height: 16px;
        font-size: 8px;
        padding: 2px;
    }
}

.category-icon {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.1) !important;
    color: var(--text-color) !important;
    font-size: 10px;
    padding: 4px;
    border-radius: 50%;
    z-index: 5;
    pointer-events: none;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.dark-mode .category-icon {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-color);
}

.dragging-skin {
  opacity: 0.5;
  transform: scale(0.95);
}

.skin-drag-over-top {
  border-top: 3px solid var(--primary-color) !important;
}

.skin-drag-over-bottom {
  border-bottom: 3px solid var(--primary-color) !important;
}

.skin-drag-over-empty {
  background: rgba(33, 150, 243, 0.1);
}
.skin-drag-over-empty::before {
  content: "Drop skin here to add as layer";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--primary-color);
  font-weight: 500;
  pointer-events: none;
}