:root{--dav-primary:#14213D;--dav-primary-hover:#1a2d52;--dav-success:#4CAF50;--dav-danger:#e74c3c;--dav-light-bg:#fafafa;--dav-border:#ddd;--dav-text:#333;--dav-text-muted:#666;--dav-radius:8px;--dav-radius-sm:6px;--dav-transition:0.2s ease}.diamond-art-viewer{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:var(--dav-text);box-sizing:border-box;max-width:1600px;margin:0 auto;padding:0 10px}.diamond-art-viewer *,.diamond-art-viewer *::before,.diamond-art-viewer *::after{box-sizing:inherit}.viewer-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;color:var(--dav-text-muted)}.viewer-loading .spinner{width:48px;height:48px;border:4px solid var(--dav-border);border-top-color:var(--dav-primary);border-radius:50%;animation:spin 0.8s linear infinite;margin-bottom:16px}@keyframes spin{to{transform:rotate(360deg)}}.viewer-error{max-width:400px;margin:40px auto;padding:24px;text-align:center;background:#fff4f4;border-radius:var(--dav-radius)}.viewer-error .btn-retry{background:var(--dav-primary);color:#fff;border:none;border-radius:var(--dav-radius);padding:10px 20px;cursor:pointer}.viewer-header{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--dav-border);gap:10px}.header-logo img{height:40px;width:auto}.viewer-actions{display:flex;gap:8px;flex-wrap:wrap}.viewer-actions button,.viewer-actions a{display:inline-flex;align-items:center;gap:5px;background:var(--dav-primary);color:#fff;border:none;border-radius:var(--dav-radius-sm);padding:8px 12px;font-size:13px;font-weight:500;cursor:pointer;text-decoration:none;transition:all var(--dav-transition)}.viewer-actions button:hover,.viewer-actions a:hover{background:var(--dav-primary-hover)}.viewer-actions svg{width:16px;height:16px}.instructions-tooltip{display:none;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:1000;background:#fff;border-radius:var(--dav-radius);padding:20px;max-width:380px;width:90%;box-shadow:0 10px 40px rgb(0 0 0 / .3)}.instructions-tooltip.active{display:block}.instructions-tooltip h4{margin:0 0 12px;font-size:16px;color:var(--dav-primary)}.instructions-tooltip ul{margin:0;padding-left:18px}.instructions-tooltip li{margin-bottom:8px;font-size:13px;color:var(--dav-text-muted)}.tooltip-close{position:absolute;top:10px;right:10px;width:28px;height:28px;background:var(--dav-light-bg);border:none;border-radius:50%;font-size:18px;cursor:pointer}.viewer-body{display:flex;gap:12px;margin-top:10px}.viewer-canvas-wrapper{flex:1;min-width:0;background:#fff;border:1px solid var(--dav-border);border-radius:var(--dav-radius);overflow:hidden}.canvas-header{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:var(--dav-light-bg);border-bottom:1px solid var(--dav-border)}.current-block-title{font-size:14px;font-weight:600;color:var(--dav-primary);margin:0}.canvas-controls{display:flex;gap:5px;align-items:center}.canvas-controls button{background:var(--dav-primary);color:#fff;border:none;border-radius:var(--dav-radius-sm);padding:6px 10px;font-size:13px;cursor:pointer;display:inline-flex;align-items:center;gap:4px;transition:all var(--dav-transition);min-height:30px}.canvas-controls button:hover:not(:disabled){background:var(--dav-primary-hover)}.canvas-controls button:disabled{background:#ccc;cursor:not-allowed}.canvas-controls svg{width:14px;height:14px}.btn-zoom-in,.btn-zoom-out,.btn-fit{min-width:30px;padding:6px!important;font-size:15px!important}.controls-separator{width:1px;height:18px;background:var(--dav-border);margin:0 3px}.canvas-container{position:relative;width:100%;height:78vh;min-height:500px;max-height:1000px;overflow:hidden;cursor:grab;background:linear-gradient(45deg,#f0f0f0 25%,transparent 25%),linear-gradient(-45deg,#f0f0f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#f0f0f0 75%),linear-gradient(-45deg,transparent 75%,#f0f0f0 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}.canvas-container:active{cursor:grabbing}#diamond-canvas{display:block}.viewer-sidebar{width:200px;flex-shrink:0;display:flex;flex-direction:column;gap:10px}.sidebar-section{background:#fff;border:1px solid var(--dav-border);border-radius:var(--dav-radius);padding:10px}.sidebar-section h3{font-size:12px;font-weight:600;color:var(--dav-primary);margin:0 0 8px;padding-bottom:6px;border-bottom:1px solid var(--dav-border)}.block-navigation{display:flex;align-items:center;gap:5px}.btn-nav{background:var(--dav-primary);color:#fff;border:none;border-radius:var(--dav-radius-sm);width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.btn-nav:hover:not(:disabled){background:var(--dav-primary-hover)}.btn-nav:disabled{background:#ccc;cursor:not-allowed}.btn-nav svg{width:16px;height:16px}.block-selector-container{flex:1;overflow:hidden}.block-selector{display:flex;gap:3px;overflow-x:auto;padding:2px 0;scrollbar-width:none}.block-selector::-webkit-scrollbar{display:none}.block-num{min-width:26px;height:26px;background:var(--dav-light-bg);border:2px solid var(--dav-border);border-radius:4px;font-size:11px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}.block-num:hover{border-color:var(--dav-primary)}.block-num.active{background:var(--dav-primary);border-color:var(--dav-primary);color:#fff}.block-input-wrap{display:flex;justify-content:center;align-items:center;gap:5px;margin-top:8px;padding-top:8px;border-top:1px solid var(--dav-border);font-size:12px}.block-input-wrap input{width:50px;padding:5px;border:1px solid var(--dav-border);border-radius:4px;font-size:12px;text-align:center}.block-input-wrap input:focus{outline:none;border-color:var(--dav-primary)}.color-palette{display:flex;flex-wrap:wrap;gap:5px}.color-swatch{width:36px;height:36px;border-radius:4px;border:2px solid #fff0;cursor:pointer;overflow:hidden;transition:all var(--dav-transition)}.color-swatch img{width:100%;height:100%;object-fit:cover}.color-swatch:hover{transform:scale(1.1);box-shadow:0 2px 8px rgb(0 0 0 / .2)}.color-swatch.selected{border-color:var(--dav-primary);box-shadow:0 0 0 2px var(--dav-primary);transform:scale(1.1)}.btn-reset-progress{width:100%;background:#fff0;color:var(--dav-danger);border:2px solid var(--dav-danger);border-radius:var(--dav-radius);padding:8px;font-size:12px;font-weight:500;cursor:pointer}.btn-reset-progress:hover{background:var(--dav-danger);color:#fff}.btn-fill-block{width:100%;background:#fff0;color:var(--dav-success);border:2px solid var(--dav-success);border-radius:var(--dav-radius);padding:8px;font-size:12px;font-weight:500;cursor:pointer}.btn-fill-block:hover{background:var(--dav-success);color:#fff}.cover-modal{display:none;position:fixed;inset:0;z-index:10000;align-items:center;justify-content:center}.cover-modal.active{display:flex}.modal-backdrop{position:absolute;inset:0;background:rgb(0 0 0 / .9)}.modal-content{position:relative;display:flex;align-items:center;justify-content:center;max-width:90vw;max-height:90vh}.modal-close{position:absolute;top:-40px;right:0;width:36px;height:36px;background:#fff;border:none;border-radius:50%;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center}.modal-image{max-width:100%;max-height:85vh;object-fit:contain;border-radius:var(--dav-radius)}@media (max-width:900px){.viewer-body{flex-direction:column}.viewer-sidebar{width:100%;flex-direction:row;flex-wrap:wrap}.sidebar-section{flex:1;min-width:140px}.canvas-container{height:calc(100vh - 180px);min-height:350px;max-height:none}}@media (max-width:600px){.diamond-art-viewer{padding:0 6px}.viewer-header{padding:8px 0}.header-logo img{height:32px}.viewer-actions button,.viewer-actions a{padding:6px 10px;font-size:12px}.btn-text{display:none}.canvas-container{height:calc(100vh - 160px);min-height:300px}.sidebar-section{min-width:100%}.color-swatch{width:32px;height:32px}}@media (hover:none) and (pointer:coarse){.btn-nav,.canvas-controls button,.viewer-actions button{min-height:40px;min-width:40px}.block-num{min-width:32px;height:32px;font-size:13px}.color-swatch{width:40px;height:40px}}body.diamond-viewer-page{margin:0;padding:8px;background:var(--dav-light-bg);min-height:100vh}