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button{width:28px;height:28px;border:none;background:var(--bg-surface);cursor:pointer;color:var(--text-soft);display:grid;place-items:center;padding:0}.zoom-stepper button:hover{background:var(--ink-50);color:var(--text)}.zoom-stepper .zoom-value{min-width:56px;text-align:center;font-family:var(--font-mono);font-size:12px;color:var(--text);border-left:1px solid var(--border);border-right:1px solid var(--border);height:100%;display:grid;place-items:center}.toolbar-spacer{flex:1}.ribbon{background:var(--bg-surface);border-bottom:1px solid var(--border);display:flex;flex-direction:column}.ribbon-tabs{display:flex;gap:2px;padding:4px 8px 0;background:var(--ink-50);border-bottom:1px solid var(--border)}.ribbon-tab{padding:6px 14px;background:transparent;border:1px solid transparent;border-bottom:none;border-top-left-radius:var(--radius-sm);border-top-right-radius:var(--radius-sm);color:var(--text-muted);font-size:12px;font-weight:500;cursor:pointer;transition:background 80ms ease,color 80ms 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var(--border);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text)}.viewer-tool-panel-body{flex:1;padding:14px 16px;overflow-y:auto}.viewer-loupe{pointer-events:none;border:2px solid var(--ink-900);border-radius:50%;box-shadow:0 4px 12px #00000040;background:var(--bg-surface);z-index:5}.measurement-list{display:flex;flex-direction:column;gap:8px}.measurement-list-header{display:flex;align-items:center;justify-content:space-between;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.measurement-rows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.measurement-row{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;padding:6px 8px;background:var(--ink-50);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:12px}.measurement-index{color:var(--text-muted);font-size:11px}.measurement-value{color:var(--text);font-weight:600}.details-grid{display:grid;grid-template-columns:110px 1fr;gap:4px 12px;margin:0;font-size:12px}.details-grid dt{color:var(--text-muted)}.details-grid dd{margin:0;color:var(--text)}.details-grid dd.mono{font-family:var(--font-mono)}.viewer-canvas-wrap{flex:1;position:relative;overflow:hidden}.ruler{background:var(--bg-surface);position:absolute;color:var(--text-muted);font-family:var(--font-mono);font-size:9px;-webkit-user-select:none;user-select:none;z-index:2}.ruler-h{top:0;left:20px;right:0;height:20px;border-bottom:1px solid var(--border)}.ruler-v{top:20px;left:0;bottom:0;width:20px;border-right:1px solid var(--border)}.ruler-corner{position:absolute;top:0;left:0;width:20px;height:20px;background:var(--bg-surface);border-right:1px solid var(--border);border-bottom:1px solid var(--border);z-index:3}.canvas-stage{position:absolute;top:20px;left:20px;right:0;bottom:0;overflow:hidden;background:linear-gradient(45deg,oklch(.91 .005 250) 25%,transparent 25%),linear-gradient(-45deg,oklch(.91 .005 250) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,oklch(.91 .005 250) 75%),linear-gradient(-45deg,transparent 75%,oklch(.91 .005 250) 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0;background-color:var(--bg-canvas)}.canvas-stage[data-tool=pan]{cursor:grab}.canvas-stage[data-tool=pan]:active{cursor:grabbing}.canvas-stage[data-tool=select],.canvas-stage[data-tool=measure],.canvas-stage[data-tool=calibrate]{cursor:crosshair}.canvas-stage[data-tool=zoom]{cursor:zoom-in}.statusbar{height:28px;background:var(--bg-surface);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 12px;gap:16px;font-size:11px;color:var(--text-muted);font-family:var(--font-mono);flex-shrink:0}.statusbar .seg{display:flex;align-items:center;gap:6px}.statusbar .seg+.seg{border-left:1px solid var(--border);padding-left:16px}.statusbar .label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:10px}.statusbar .val{color:var(--text)}.statusbar-spacer{flex:1}.filter-bar{display:grid;grid-template-columns:1.4fr 1fr 1fr auto;gap:10px;padding:14px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;align-items:end}.filter-bar .actions{display:flex;gap:6px;align-items:center}@media (max-width: 900px){.filter-bar{grid-template-columns:1fr 1fr}.filter-bar .actions{grid-column:1 / -1}}.login-stage{flex:1;display:grid;place-items:center;padding:40px 24px}.login-card{width:360px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:0 1px 3px #0f172a0f,0 1px 2px #0f172a0a;padding:28px}.login-mark{width:36px;height:36px;border-radius:8px;background:var(--primary);color:#fff;display:grid;place-items:center;font-family:var(--font-mono);font-weight:700;font-size:16px;margin-bottom:14px}.login-title{font-size:18px;font-weight:600;margin:0 0 4px;letter-spacing:-.01em}.login-sub{font-size:12px;color:var(--text-muted);margin:0 0 22px}.login-form{display:flex;flex-direction:column;gap:12px}.login-foot{margin-top:18px;font-size:11px;color:var(--text-muted);text-align:center}.kv{display:inline-flex;align-items:center;gap:4px;font-family:var(--font-mono);font-size:11px;color:var(--text-muted)}.mono{font-family:var(--font-mono)}.back-link{display:inline-flex;align-items:center;gap:4px;color:var(--text-muted);background:none;border:none;text-decoration:none;font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px;cursor:pointer;padding:0;font-family:inherit}.back-link:hover{color:var(--primary)}.doc-headerrow{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.doc-name{font-size:18px;font-weight:600;margin:0 0 4px;letter-spacing:-.015em}.doc-meta{font-size:12px;color:var(--text-muted);display:flex;gap:12px;flex-wrap:wrap;margin-top:6px;align-items:center}.doc-meta .mono{font-family:var(--font-mono);color:var(--text-soft)}.tag{display:inline-flex;align-items:center;gap:4px;height:20px;padding:0 8px;border-radius:10px;font-size:11px;background:var(--ink-100);color:var(--text-soft);border:1px solid var(--border)}.tag-green{background:var(--green-50);color:var(--green-700);border-color:color-mix(in oklch,var(--green-600) 25%,transparent)}.alert{display:flex;gap:8px;padding:10px 12px;border-radius:var(--radius);font-size:12px;line-height:1.4;border:1px solid transparent}.alert-warn{background:var(--amber-50);border-color:color-mix(in oklch,var(--amber-600) 30%,transparent);color:#834100;color:oklch(.45 .15 55)}.alert-info{background:var(--green-50);border-color:color-mix(in oklch,var(--green-600) 25%,transparent);color:var(--green-700)}.surface .MuiDataGrid-root{border:none;font-family:var(--font-sans);font-size:13px}.surface .MuiDataGrid-columnHeaders{background:var(--ink-50)}.surface .MuiDataGrid-columnHeaderTitle{font-size:11px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.surface .MuiDataGrid-cell{border-bottom:1px solid var(--border)}.surface .MuiDataGrid-row:hover{background:var(--ink-50)}.surface .MuiDataGrid-row.Mui-selected,.surface .MuiDataGrid-row.Mui-selected:hover{background:var(--green-50)}.surface .MuiDataGrid-footerContainer{border-top:1px solid var(--border);background:var(--bg-surface);font-size:12px}.surface .MuiDataGrid-virtualScroller{background:var(--bg-surface)}