body{height:100vh;overflow:hidden}main{max-width:100%;margin:0;padding:0;display:flex;flex-direction:column;overflow:hidden}.app-content-wrapper{display:flex;flex-direction:column;flex-grow:1;overflow:hidden;margin:0 auto;width:100%;max-width:1400px;background-color:var(--card-bg);box-shadow:var(--box-shadow);padding:var(--spacing-lg);box-sizing:border-box}.tool-mode{display:none;flex-direction:column;height:100%;overflow:hidden}.tool-mode.active-mode{display:flex}.tool-header{display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--border-color);padding-bottom:var(--spacing-md);margin-bottom:var(--spacing-md);background-color:var(--card-bg);flex-wrap:wrap}.tool-header h2{margin:0;border:none;padding:0}.tool-header .file-upload-area{margin:0;padding:0;border:none;background:none}.tool-header .file-label{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--input-border-color);border-radius:var(--border-radius-sm);background-color:var(--gray-100);cursor:pointer;display:inline-flex;align-items:center;gap:var(--spacing-sm);font-size:.9rem;transition:var(--transition);color:var(--text-color)}.tool-header .file-label:hover{background-color:var(--gray-200)}.tool-header .file-label i{font-size:1.1em}input[type=file]{display:none}#addTextBtn,#addImageBtn{background-color:var(--primary);color:#fff;border-color:var(--primary)}#addTextBtn:not(:disabled):hover,#addImageBtn:not(:disabled):hover{background-color:var(--primary-dark);border-color:var(--primary-dark)}.settings-btn{background-color:var(--gray-100);color:var(--gray-800);border-color:var(--gray-300)}.settings-btn:not(:disabled):hover{background-color:var(--gray-200);border-color:var(--gray-400)}.tool-header .action-button{margin:0 0 0 auto;background-color:var(--success);color:#fff;border-color:var(--success)}.tool-header .action-button:not(:disabled):hover{background-color:#05b386;border-color:#05b386}#editorInterface{display:flex;gap:var(--spacing-lg);flex-grow:1;overflow:hidden}#thumbnail-sidebar{width:180px;min-width:180px;height:100%;overflow-y:auto;background-color:var(--gray-100);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);padding:var(--spacing-sm);box-sizing:border-box}.thumbnail-container{margin-bottom:var(--spacing-md);cursor:pointer;border:2px solid transparent;padding:5px;border-radius:var(--border-radius-sm);text-align:center;transition:var(--transition)}.thumbnail-container:hover{background-color:var(--gray-200)}.thumbnail-container.active{border-color:var(--primary);background-color:#4361ee1a}.thumbnail-container canvas{width:100%;height:auto;border:1px solid var(--border-color);display:block}.thumbnail-label{font-size:.85em;color:var(--text-muted);margin-top:5px;display:block}#main-editor-area{flex:1;display:flex;overflow:hidden;flex-direction:column}#page-viewer{flex:1;border:1px solid var(--border-color);background-color:var(--gray-200);padding:var(--spacing-sm);overflow:auto;display:flex;justify-content:center;align-items:flex-start;border-radius:var(--border-radius-sm)}#page-viewer canvas{box-shadow:var(--box-shadow);background-color:#fff;cursor:default}#page-viewer .no-page-selected{color:var(--text-muted);align-self:center;width:100%;text-align:center;padding:var(--spacing-lg)}#page-viewer.add-text-cursor canvas{cursor:crosshair}.text-options{display:flex;gap:var(--spacing-lg);align-items:flex-end;flex-wrap:wrap;margin-bottom:var(--spacing-md)}.text-options .form-group{flex:1;min-width:120px}.text-options input[type=number]{width:80px}.text-options input[type=color]{width:60px;height:38px;padding:2px;cursor:pointer}#loadingIndicator{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#ffffffd9;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:9999}.spinner{border:8px solid var(--gray-200);border-top:8px solid var(--primary);border-radius:50%;width:60px;height:60px;animation:spin 1s linear infinite;margin-bottom:var(--spacing-lg)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#loadingIndicator p{font-size:1.2em;color:var(--text-color);font-weight:700}.drop-zone{transition:background-color .2s ease-in-out,box-shadow .2s ease-in-out}.drop-zone.drag-over{background-color:#4361ee0d;box-shadow:inset 0 0 15px #4361ee26}.drop-zone.drag-over .file-upload-area{border-color:var(--primary)!important;border-style:solid!important;background-color:#4361ee14}.sortable-ghost{opacity:.5;background-color:#4361ee26;border:1px dashed var(--primary)}body.dark-theme .app-content-wrapper{background-color:var(--card-bg)}body.dark-theme #thumbnail-sidebar{background-color:var(--gray-100);border-color:var(--border-color)}body.dark-theme .thumbnail-container:hover{background-color:var(--gray-200)}body.dark-theme .thumbnail-container.active{border-color:var(--primary);background-color:#6b8cff26}body.dark-theme #page-viewer{background-color:var(--gray-200);border-color:var(--border-color)}body.dark-theme #loadingIndicator{background-color:#121212d9}body.dark-theme .tool-header{border-bottom-color:var(--border-color);background-color:var(--card-bg)}body.dark-theme .settings-btn{background-color:var(--gray-200);color:var(--text-color);border-color:var(--gray-300)}body.dark-theme .settings-btn:not(:disabled):hover{background-color:var(--gray-300)}body.dark-theme .tool-header .file-label{background-color:var(--gray-200);border-color:var(--gray-300);color:var(--text-color)}body.dark-theme .tool-header .file-label:hover{background-color:var(--gray-300)}@media (max-width: 768px){.tool-header{gap:var(--spacing-sm)}#thumbnail-sidebar{width:120px;min-width:120px}.app-content-wrapper{padding:var(--spacing-sm)}.text-options{flex-direction:column}}@media (max-width: 480px){#editorInterface{flex-direction:column}#thumbnail-sidebar{width:100%;min-width:0;height:100px;overflow-x:auto;overflow-y:hidden;display:flex;flex-direction:row;gap:var(--spacing-sm)}.thumbnail-container{margin-bottom:0;min-width:80px}}