/* Whiteboard styles — extracted from apps/whiteboard.js (refactor 2026-03-03). See REFACTOR_LOG.md. */
#wb-root *{box-sizing:border-box}
/* Phase 1: loading overlay */
#wb-loading{position:absolute;inset:0;background:#eff6ff;display:flex;align-items:center;justify-content:center;z-index:9999;border-radius:inherit}
#wb-load-box{display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center}
#wb-load-icon{font-size:54px;animation:wb-pulse 1.4s ease-in-out infinite}
#wb-load-label{font-size:16px;font-weight:700;color:#2563eb;font-family:system-ui,sans-serif;letter-spacing:.01em}
#wb-load-track{width:240px;height:14px;background:#dbeafe;border-radius:99px;overflow:hidden}
#wb-load-bar{height:100%;width:0%;background:linear-gradient(90deg,#2563eb,#60a5fa);border-radius:99px;transition:width 0.3s ease}
@keyframes wb-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
/* Toolbar */
#wb-tb{display:flex;flex-direction:column;align-items:stretch;width:60px;min-width:60px;background:linear-gradient(180deg,#2563eb 0%,#1e40af 100%);overflow-y:auto;overflow-x:hidden;z-index:10;padding:6px 0;box-shadow:3px 0 12px rgba(0,0,0,.18)}
#wb-tb::-webkit-scrollbar{width:0}
.wbt{display:flex;align-items:center;justify-content:center;height:46px;margin:2px 4px;border:none;border-radius:10px;background:rgba(255,255,255,.12);cursor:pointer;font-size:22px;color:#fff;transition:background .12s,transform .1s;flex-shrink:0;padding:0}
.wbt:hover{background:rgba(255,255,255,.28);transform:scale(1.05)}
.wbt.active{background:#fbbf24;color:#1e293b;box-shadow:0 3px 12px rgba(251,191,36,.5)}
.wbt.wb-restricted,.wb-fm-item.wb-restricted{opacity:.45;cursor:not-allowed}
.wbt.wb-restricted:hover{background:rgba(255,255,255,.12);transform:none}
.wbt-sep{height:2px;background:rgba(255,255,255,.2);margin:4px 6px;flex-shrink:0;border-radius:1px}
.wbt-sp{flex:1}
.wbt svg{pointer-events:none}
/* Main */
#wb-main{flex:1;display:flex;position:relative;overflow:hidden}
/* Canvas area */
#wb-ca{flex:1;position:relative;overflow:hidden;background:#888}
#wb-bg-cv{position:absolute;top:0;left:0;width:100%;height:100%;display:block;pointer-events:none}
#wb-cv{position:absolute;top:0;left:0;width:100%;height:100%;display:block;touch-action:none}
/* Overlays (app widgets) */
#wb-ov{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden}
/* App widget */
.wb-aw{position:absolute;border:2px solid #89b4fa;border-radius:6px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.5);display:flex;flex-direction:column;min-width:160px;min-height:100px;pointer-events:all;background:#fff}
.wb-aw-hdr{display:flex;align-items:center;background:#1e1e2e;color:#cdd6f4;padding:4px 8px;cursor:move;font-size:12px;user-select:none;flex-shrink:0;gap:4px}
.wb-aw-hdr-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wb-aw-x{background:none;border:none;color:#f38ba8;cursor:pointer;font-size:14px;padding:0;line-height:1;flex-shrink:0}
.wb-aw-body{flex:1;overflow:hidden;position:relative;min-height:0}
.wb-aw-inner{position:absolute;top:0;left:0;transform-origin:top left;overflow:hidden}
.wb-aw-rz{position:absolute;bottom:0;right:0;width:16px;height:16px;cursor:se-resize;background:linear-gradient(135deg,transparent 50%,#89b4fa 50%);pointer-events:all;z-index:1}
/* Protractor widget: no rectangular box — shape is the semicircle only (do not use .wb-aw) */
.wb-protractor{position:absolute;background:transparent!important;border:none!important;box-shadow:none!important;overflow:visible!important;pointer-events:none;min-width:0!important;min-height:0!important}
.wb-protractor svg{display:block;pointer-events:none;background:transparent!important}
.wb-protractor .wb-pro-hit{pointer-events:all;cursor:move}
.wb-protractor .wb-pro-close{pointer-events:all;cursor:pointer}
.wb-protractor .wb-pro-resize{pointer-events:all;cursor:se-resize}
.wb-protractor .wb-pro-rotate{position:absolute;left:50%;top:-14%;transform:translate(-50%,0);width:22px;height:22px;border-radius:50%;background:#fff;border:1.5px solid #6366f1;color:#6366f1;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:bold;cursor:grab;pointer-events:all;z-index:2;box-shadow:0 1px 4px rgba(0,0,0,.15)}
.wb-protractor .wb-pro-rotate:active{cursor:grabbing}
/* Ruler widget: same overlay-only pattern as protractor */
.wb-ruler{position:absolute;background:transparent!important;border:none!important;box-shadow:none!important;overflow:visible!important;pointer-events:none;min-width:0!important;min-height:0!important}
.wb-ruler svg{display:block;pointer-events:none;background:transparent!important}
.wb-ruler .wb-ruler-hit{pointer-events:all;cursor:move}
.wb-ruler .wb-ruler-close{pointer-events:all;cursor:pointer}
.wb-ruler .wb-ruler-resize{pointer-events:all;cursor:se-resize}
.wb-ruler .wb-ruler-rotate{position:absolute;left:50%;top:-14%;transform:translate(-50%,0);width:22px;height:22px;border-radius:50%;background:#fff;border:1.5px solid #6366f1;color:#6366f1;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:bold;cursor:grab;pointer-events:all;z-index:2;box-shadow:0 1px 4px rgba(0,0,0,.15)}
.wb-ruler .wb-ruler-rotate:active{cursor:grabbing}
/* Pages panel */
#wb-pages{position:absolute;top:0;left:0;bottom:0;width:178px;background:#fff;box-shadow:3px 0 10px rgba(0,0,0,.2);transform:translateX(-100%);transition:transform .2s ease;z-index:8;display:flex;flex-direction:column}
#wb-pages.open{transform:translateX(0)}
#wb-pages-hdr{padding:8px 10px;font-size:12px;font-weight:700;color:#374151;border-bottom:1px solid #e5e7eb;flex-shrink:0}
#wb-pages-list{flex:1;overflow-y:auto;padding:6px;display:flex;flex-direction:column;gap:6px}
.wb-pg-thumb{position:relative;border:2px solid #e5e7eb;border-radius:5px;cursor:pointer;overflow:hidden;background:#fff;flex-shrink:0}
.wb-pg-thumb.active{border-color:#89b4fa}
.wb-pg-thumb canvas{display:block;width:100%;height:auto}
.wb-pg-num{position:absolute;top:3px;left:5px;font-size:10px;color:#555;background:rgba(255,255,255,.85);padding:0 4px;border-radius:3px;pointer-events:none}
.wb-pg-del{position:absolute;top:3px;right:3px;background:rgba(255,255,255,.9);border:none;border-radius:3px;cursor:pointer;color:#ef4444;font-size:11px;padding:1px 4px;display:none;line-height:1}
.wb-pg-thumb:hover .wb-pg-del{display:block}
.wb-pg-drag{position:absolute;bottom:3px;left:50%;transform:translateX(-50%);background:rgba(255,255,255,.9);border:none;border-radius:3px;cursor:grab;color:#6b7280;font-size:10px;padding:2px 6px;display:none;line-height:1}
.wb-pg-thumb:hover .wb-pg-drag{display:block}
.wb-pg-drag:active{cursor:grabbing}
.wb-pg-thumb.dragging{opacity:.6}
.wb-pg-thumb.drag-over{border-color:#89b4fa;box-shadow:0 0 0 2px #93c5fd}
.wb-pg-add-after{position:absolute;bottom:3px;right:3px;background:rgba(255,255,255,.9);border:none;border-radius:3px;cursor:pointer;color:#16a34a;font-size:11px;padding:1px 5px;display:none;line-height:1}
.wb-pg-thumb:hover .wb-pg-add-after{display:block}
.wb-pg-add-after:hover{background:#dcfce7}
#wb-addpg{margin:6px;padding:7px;font-size:13px;border:1px dashed #d1d5db;border-radius:5px;background:none;cursor:pointer;color:#6b7280;flex-shrink:0}
#wb-addpg:hover{background:#f9fafb}
/* Page nav pill */
#wb-nav{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;background:rgba(37,99,235,.9);border-radius:22px;padding:6px 16px;color:#fff;font-size:14px;font-weight:600;z-index:9;pointer-events:all;white-space:nowrap;box-shadow:0 4px 14px rgba(37,99,235,.4)}
#wb-nav button{background:none;border:none;color:#fff;cursor:pointer;font-size:22px;line-height:1;padding:0}
#wb-nav button:hover{color:#fbbf24}
/* Fullscreen button */
#wb-fs{position:absolute;top:8px;right:10px;background:rgba(37,99,235,.82);border:none;border-radius:10px;color:#fff;font-size:16px;width:32px;height:32px;cursor:pointer;z-index:9;display:flex;align-items:center;justify-content:center}
#wb-fs:hover{background:rgba(37,99,235,1)}
/* PWA standalone (e.g. iOS Add to Home Screen): already full-screen-like, so hide the fullscreen button */
#wb-root.wb-pwa-standalone #wb-fs{display:none}
/* iOS pseudo-fullscreen: avoids native fullscreen so no system "swipe down to exit" (which triggered when drawing) and no duplicate system close button */
#wb-root.wb-ios-fullscreen{touch-action:none}
/* Toolbar position: right */
#wb-root.wb-tb-right{flex-direction:row-reverse}
#wb-root.wb-tb-right #wb-tb{box-shadow:-3px 0 12px rgba(0,0,0,.18)}
#wb-root.wb-tb-right #wb-fs{right:auto;left:10px}
#wb-root.wb-tb-right #wb-props,#wb-root.wb-tb-right .wb-small-pop,#wb-root.wb-tb-right #wb-hl-pop,#wb-root.wb-tb-right #wb-bg-pop,#wb-root.wb-tb-right #wb-file-menu{left:auto;right:66px}
/* Toolbar position: bottom (easier for younger users to reach) */
#wb-root.wb-tb-bottom{flex-direction:column}
#wb-root.wb-tb-bottom #wb-main{order:-1}
#wb-root.wb-tb-bottom #wb-tb{order:1;flex-direction:row;width:100%;min-width:unset;height:64px;min-height:64px;padding:0 10px;box-shadow:0 -3px 12px rgba(0,0,0,.18);align-items:center;justify-content:center;flex-wrap:nowrap}
#wb-root.wb-tb-bottom #wb-tb .wbt{width:44px;min-width:44px;height:44px;margin:0 2px}
#wb-root.wb-tb-bottom #wb-tb .wbt-sep{width:2px;height:28px;min-height:28px;margin:0 2px}
#wb-root.wb-tb-bottom #wb-nav.wb-nav-in-tb{position:static;left:auto;bottom:auto;transform:none;flex-shrink:0;margin:0 8px}
#wb-root.wb-tb-bottom #wb-fs{right:10px;left:auto}
#wb-root.wb-tb-bottom #wb-props,#wb-root.wb-tb-bottom .wb-small-pop,#wb-root.wb-tb-bottom #wb-hl-pop,#wb-root.wb-tb-bottom #wb-bg-pop,#wb-root.wb-tb-bottom #wb-file-menu{top:auto;bottom:74px}
/* Properties popover */
#wb-props{position:fixed;left:66px;background:#fff;border:2px solid #bfdbfe;border-radius:12px;box-shadow:0 4px 20px rgba(37,99,235,.15);padding:10px 12px;display:none;flex-direction:column;gap:7px;z-index:20;min-width:170px;font-size:12px;color:#374151}
#wb-props.show{display:flex}
#wb-props label{display:flex;align-items:center;gap:6px;white-space:nowrap}
#wb-props input[type=range]{flex:1;width:90px}
#wb-props input[type=color]{width:30px;height:20px;border:none;padding:0;cursor:pointer;border-radius:3px}
#wb-props .wp-val{min-width:22px;text-align:right;color:#6b7280}
/* Shared small popup (shapes & app widgets) */
.wb-small-pop{position:fixed;left:66px;background:#fff;border:2px solid #bfdbfe;border-radius:12px;box-shadow:0 6px 28px rgba(37,99,235,.18);padding:12px;z-index:30;display:none;min-width:180px}
.wb-small-pop.show{display:block}
.wb-small-pop h4{margin:0 0 8px;font-size:11px;font-weight:700;color:#6b7280;text-transform:uppercase;letter-spacing:.5px}
.wb-pop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}
.wb-ap{display:flex;flex-direction:column;align-items:center;padding:7px 4px;border:1px solid #e5e7eb;border-radius:6px;cursor:pointer;font-size:11px;text-align:center;color:#374151;background:#fff;gap:2px}
.wb-ap:hover{background:#eff6ff;border-color:#93c5fd}
.wb-ap.active{background:#eff6ff;border-color:#89b4fa;color:#1d4ed8}
.wb-ap-ic{font-size:20px}
/* Shape sub-tool list (single column) */
.wb-shape-list{display:flex;flex-direction:column;gap:4px}
.wb-shape-item{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:5px;cursor:pointer;font-size:12px;color:#374151;background:none;border:none;width:100%;text-align:left}
.wb-shape-item:hover{background:#eff6ff}
.wb-shape-item.active{background:#dbeafe;color:#1d4ed8}
.wb-shape-item span{font-size:16px;width:20px;text-align:center}
/* Highlighter popup */
#wb-hl-pop{position:fixed;left:66px;background:#fff;border:2px solid #bfdbfe;border-radius:12px;box-shadow:0 6px 28px rgba(37,99,235,.2);padding:12px;z-index:30;display:none;min-width:196px}
#wb-hl-pop.show{display:block}
#wb-hl-pop h4{margin:0 0 8px;font-size:11px;font-weight:700;color:#6b7280;text-transform:uppercase;letter-spacing:.5px}
.hl-colors{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.hl-swatch{width:26px;height:26px;border-radius:5px;border:2px solid transparent;cursor:pointer;transition:transform .1s,border-color .1s}
.hl-swatch:hover{transform:scale(1.15)}
.hl-swatch.active{border-color:#374151;box-shadow:0 0 0 2px #2563eb}
.hl-sizes{display:flex;gap:6px}
.hl-sz{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:5px 2px;border:1px solid #e5e7eb;border-radius:6px;cursor:pointer;background:transparent;color:#374151;font-size:10px;transition:background .1s}
.hl-sz:hover{background:#eff6ff}
.hl-sz.active{background:#dbeafe;border-color:#2563eb;color:#2563eb}
.hl-sz-bar{background:#ffff00;border-radius:2px;width:28px}
#wb-cv.cur-highlighter{cursor:cell}
/* Tools full-screen modal */
#wb-tools-modal{position:fixed;top:env(safe-area-inset-top,0);left:env(safe-area-inset-left,0);right:env(safe-area-inset-right,0);bottom:env(safe-area-inset-bottom,0);width:auto;height:auto;min-height:100vh;min-height:100dvh;background:rgba(15,15,25,.75);backdrop-filter:blur(4px);z-index:50;display:none;align-items:center;justify-content:center}
#wb-tools-modal.show{display:flex}
#wb-tools-panel{background:#fff;border-radius:16px;padding:24px;max-width:700px;width:90%;max-height:85vh;overflow-y:auto;-webkit-overflow-scrolling:touch;position:relative}
#wb-tools-panel h3{margin:0 0 18px;font-size:16px;font-weight:700;color:#1e1e2e}
#wb-tools-close{position:absolute;top:16px;right:16px;background:#f3f4f6;border:none;border-radius:8px;width:32px;height:32px;cursor:pointer;font-size:18px;color:#374151;display:flex;align-items:center;justify-content:center}
#wb-tools-close:hover{background:#e5e7eb}
#wb-tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:12px}
.wb-tool-tile{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;border:1px solid #e5e7eb;border-radius:10px;cursor:pointer;color:#374151;background:#fff;font-size:13px;text-align:center;transition:background .1s,border-color .1s}
.wb-tool-tile:hover{background:#f0f9ff;border-color:#93c5fd}
.wb-tool-tile-ic{font-size:32px}
/* Canvas cursor */
#wb-cv.cur-crosshair{cursor:crosshair}
#wb-cv.cur-text{cursor:text}
#wb-cv.cur-cell{cursor:cell}
#wb-cv.cur-default{cursor:default}
/* Background popup */
#wb-bg-pop{position:fixed;left:66px;background:#fff;border:2px solid #bfdbfe;border-radius:12px;box-shadow:0 6px 28px rgba(37,99,235,.2);padding:12px;z-index:30;display:none;min-width:184px}
#wb-bg-pop.show{display:block}
#wb-bg-pop h4{margin:0 0 8px;font-size:11px;font-weight:700;color:#6b7280;text-transform:uppercase;letter-spacing:.5px}
.wb-bg-opts{display:flex;flex-direction:column;gap:3px}
.wb-bg-opt{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:5px;cursor:pointer;font-size:12px;color:#374151;background:none;border:none;width:100%;text-align:left}
.wb-bg-opt:hover{background:#eff6ff}
.wb-bg-opt.active{background:#dbeafe;color:#2563eb}
.wb-bg-sw{display:inline-block;width:32px;height:22px;border-radius:3px;border:1px solid #e5e7eb;flex-shrink:0;background:#fff}
.wb-bg-sw-grid{background-image:linear-gradient(rgba(99,102,241,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(99,102,241,.35) 1px,transparent 1px);background-size:8px 8px}
.wb-bg-sw-lined{background-image:linear-gradient(transparent calc(100% - 1px),rgba(100,140,200,.6) 1px);background-size:100% 8px}
.wb-bg-sw-lined-margin{background-image:linear-gradient(transparent calc(100% - 1px),rgba(100,140,200,.6) 1px),linear-gradient(90deg,transparent 8px,rgba(220,80,80,.5) 8px,transparent 9px);background-size:100% 8px,100% 100%}
.wb-bg-sw-handwriting{background-image:linear-gradient(to bottom,rgba(100,140,200,.55) 0 1px,transparent 1px 3px,rgba(100,140,200,.55) 3px 4px,transparent 4px 7px,rgba(220,80,80,.55) 7px 8px,transparent 8px 11px);background-size:100% 11px}
.wb-bg-sw-handwriting2{background-image:linear-gradient(to bottom,rgba(30,120,255,.8) 0 1.5px,transparent 1.5px 3.5px,rgba(0,0,0,.7) 3.5px 5px,transparent 5px 9px,rgba(0,0,0,.7) 9px 10.5px,transparent 10.5px 12.5px,rgba(30,120,255,.8) 12.5px 14px,transparent 14px 19px);background-size:100% 19px}
.wb-bg-sw-music{background-image:linear-gradient(transparent 3px,rgba(30,30,80,.45) 3px,rgba(30,30,80,.45) 4px,transparent 4px,transparent 6px,rgba(30,30,80,.45) 6px,rgba(30,30,80,.45) 7px,transparent 7px,transparent 9px,rgba(30,30,80,.45) 9px,rgba(30,30,80,.45) 10px,transparent 10px,transparent 12px,rgba(30,30,80,.45) 12px,rgba(30,30,80,.45) 13px,transparent 13px,transparent 15px,rgba(30,30,80,.45) 15px,rgba(30,30,80,.45) 16px,transparent 16px);background-size:100% 22px}
.wb-bg-sw-dots{background-image:radial-gradient(circle,rgba(99,102,241,.55) 1.5px,transparent 1.5px);background-size:8px 8px;background-position:4px 4px}
.wb-bg-sw-iso{background-image:linear-gradient(30deg,rgba(99,102,241,.25) 1px,transparent 1px),linear-gradient(150deg,rgba(99,102,241,.25) 1px,transparent 1px),linear-gradient(rgba(99,102,241,.2) 1px,transparent 1px);background-size:10px 6px,10px 6px,100% 6px}
#wb-bg-sz{display:none;align-items:center;gap:6px;margin-top:8px;padding-top:8px;border-top:1px solid #e5e7eb;color:#374151;font-size:12px}
#wb-bg-sz button{background:#e5e7eb;border:none;border-radius:4px;color:#374151;width:22px;height:22px;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;padding:0}
#wb-bg-sz button:hover{background:#d1d5db}
#wb-bg-sz-val{min-width:28px;text-align:center}
#wb-bg-col{display:flex;align-items:center;gap:8px;margin-top:8px;padding-top:8px;border-top:1px solid #e5e7eb;color:#374151;font-size:12px}
#wb-bg-col span{flex:1}
#wb-bg-col input[type=color]{width:30px;height:22px;border:1px solid #e2e8f0;border-radius:4px;padding:1px;cursor:pointer;flex-shrink:0}
#wb-bg-def-row{margin-top:6px}
#wb-bg-set-def{width:100%;padding:7px 10px;background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;color:#1d4ed8;font-size:11px;font-weight:600;cursor:pointer;text-align:center;transition:background .12s}
#wb-bg-set-def:hover{background:#dbeafe}
#wb-bg-set-def.saved{background:#dcfce7;border-color:#86efac;color:#166534}
/* Text editor overlay */
#wb-text-wrap{position:fixed;z-index:200;display:none;flex-direction:column;pointer-events:all}
#wb-text-ta{resize:none;overflow-y:hidden;min-height:36px;outline:none;border:2px solid #2563eb;border-radius:6px;padding:6px 8px;line-height:1.4;word-wrap:break-word;white-space:pre-wrap;box-sizing:border-box;background:rgba(255,255,255,.97)}
/* Object property bar (appears below/above selected object) */
#wb-obj-props{position:fixed;display:none;align-items:center;gap:4px;background:#fff;border:2px solid #bfdbfe;border-radius:12px;box-shadow:0 4px 24px rgba(37,99,235,.2);padding:5px 10px;z-index:25;font-size:12px;color:#374151;white-space:nowrap;pointer-events:all;flex-wrap:nowrap}
.wb-ob-group{display:flex;align-items:center;gap:2px}
.wb-ob-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:7px;background:rgba(37,99,235,.07);color:#2563eb;cursor:pointer;transition:background .1s,transform .1s;padding:0;flex-shrink:0}
.wb-ob-btn:hover{background:rgba(37,99,235,.18);transform:scale(1.08)}
.wb-ob-btn.danger{background:rgba(239,68,68,.07);color:#ef4444}
.wb-ob-btn.danger:hover{background:rgba(239,68,68,.18)}
.wb-ob-sep{width:1px;height:22px;background:#dbeafe;margin:0 3px;flex-shrink:0}
.wb-ob-label{font-size:10px;color:#6b7280;flex-shrink:0}
.wb-ob-col{width:26px;height:26px;border:2px solid #e2e8f0;border-radius:6px;padding:1px;cursor:pointer;flex-shrink:0}
.wb-ob-range{width:70px;accent-color:#2563eb;cursor:pointer;flex-shrink:0}
.wb-ob-num{width:44px;border:1px solid #e2e8f0;border-radius:5px;padding:2px 4px;font-size:11px;text-align:center;color:#374151;background:#f8fafc;flex-shrink:0}
.wb-ob-toggle{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border:1px solid #e2e8f0;border-radius:6px;background:#f8fafc;color:#374151;cursor:pointer;font-size:12px;font-weight:700;transition:background .1s,border-color .1s;flex-shrink:0;padding:0}
.wb-ob-toggle.on{background:#2563eb;border-color:#2563eb;color:#fff}
.wb-ob-toggle:hover:not(.on){background:#eff6ff;border-color:#93c5fd}
.wb-ob-select{border:1px solid #e2e8f0;border-radius:5px;padding:2px 4px;font-size:11px;color:#374151;background:#f8fafc;max-width:100px;flex-shrink:0}
.wb-ob-val{min-width:28px;text-align:right;color:#6b7280;font-size:11px;flex-shrink:0}
/* File menu popup */
#wb-file-menu{position:fixed;left:66px;background:#fff;border:2px solid #bfdbfe;border-radius:12px;box-shadow:0 6px 28px rgba(37,99,235,.2);padding:6px;z-index:30;display:none;min-width:190px}
#wb-file-menu.show{display:block}
.wb-fm-item{display:grid;grid-template-columns:24px 1fr;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;cursor:pointer;font-size:13px;color:#1e293b;background:none;border:none;width:100%;text-align:left;transition:background .1s,color .1s}
.wb-fm-item:hover{background:#eff6ff;color:#2563eb}
.wb-fm-item.wb-restricted:hover{background:none;color:#1e293b}
.wb-fm-item.active{background:#dbeafe;color:#1d4ed8}
.wb-fm-item svg{grid-column:1;width:16px;height:16px;color:inherit;justify-self:start}
.wb-guest-msg a{color:#93c5fd;text-decoration:underline}
.wb-guest-msg a:hover{color:#bfdbfe}
.wb-fm-sep{height:1px;background:#e5e7eb;margin:4px 2px}
/* New Project confirm dialog */
#wb-new-confirm{position:absolute;inset:0;background:rgba(0,0,0,.55);display:none;align-items:center;justify-content:center;z-index:9000;border-radius:inherit}
#wb-new-confirm.show{display:flex}
#wb-new-box{background:#fff;border-radius:16px;padding:28px 32px;max-width:340px;text-align:center;box-shadow:0 8px 40px rgba(0,0,0,.25);border:2px solid #bfdbfe}
#wb-new-box h3{margin:0 0 10px;font-size:20px;color:#1e293b}
#wb-new-box p{margin:0 0 22px;font-size:14px;color:#475569;line-height:1.5}
#wb-new-btns{display:flex;gap:12px;justify-content:center}
#wb-new-btns button{padding:10px 22px;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:background .12s,transform .1s}
#wb-new-btns button:hover{transform:scale(1.04)}
#wb-new-cancel{background:#e2e8f0;color:#334155}
#wb-new-cancel:hover{background:#cbd5e1}
#wb-new-ok{background:#2563eb;color:#fff}
#wb-new-ok:hover{background:#1d4ed8}
/* About dialog */
#wb-about{position:absolute;inset:0;background:rgba(0,0,0,.55);display:none;align-items:center;justify-content:center;z-index:9000;border-radius:inherit}
#wb-about.show{display:flex}
#wb-about-box{background:#fff;border-radius:16px;padding:28px 32px;max-width:480px;width:90%;box-shadow:0 8px 40px rgba(0,0,0,.25);border:2px solid #bfdbfe;max-height:80vh;display:flex;flex-direction:column}
#wb-about-box h3{margin:0 0 12px;font-size:20px;color:#1e293b}
#wb-about-body{overflow-y:auto;flex:1;font-size:13px;color:#475569;line-height:1.6;margin-bottom:18px}
#wb-about-body p{margin:0 0 10px}
#wb-about-body a{color:#2563eb}
#wb-about-body hr{border:none;border-top:1px solid #e5e7eb;margin:12px 0}
.wb-about-ver{font-weight:700;color:#1e293b}
.wb-ver-badge{display:inline-block;padding:2px 8px;border-radius:999px;background:#dbeafe;color:#1e3a8a;font-size:12px;line-height:1.3;font-weight:700;letter-spacing:.01em;vertical-align:middle}
.wb-about-cl-hdr{font-weight:700;color:#1e293b;margin-bottom:4px !important}
.wb-about-cl{margin:0 0 0 18px;padding:0}
.wb-about-cl li{margin-bottom:4px}
.wb-about-cl-wrap{min-height:1.5em}
.wb-about-cl-title,.wb-about-cl-ver{margin:12px 0 4px;font-size:14px;font-weight:700;color:#1e293b}
.wb-about-cl-ver:first-child{margin-top:0}
#wb-about-close{align-self:center;padding:10px 28px;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;background:#2563eb;color:#fff;transition:background .12s,transform .1s;flex-shrink:0}
#wb-about-close:hover{background:#1d4ed8;transform:scale(1.04)}