/* Concrete Precision components — DESIGN_GUIDELINES.md is authoritative. */
html{scroll-padding-bottom:160px}body{background:var(--background);color:var(--primary);font-family:var(--font-ui);font-size:16px;line-height:1.5}button,input,select,textarea{font-family:var(--font-ui)}input[type=number],.results b,.sample-live,#liveKsc,.result-sample strong,.chart-value{font-family:var(--font-number);font-variant-numeric:tabular-nums}body>header{background:var(--primary);padding:24px max(24px,calc((100% - 1120px)/2));gap:16px}body>header h1{font-size:24px;font-weight:600;line-height:32px}body>header p{font-size:14px;color:var(--border);margin-top:4px}.brand-mark{background:var(--action);color:var(--surface);border-radius:12px;width:48px;height:48px;font-size:28px}.wrap{max-width:var(--content-width);padding:24px 24px 180px}.workspace{max-width:none}.part-lead{margin:24px 0}.part-lead h2{font-size:28px;line-height:36px;color:var(--primary)}.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--muted)}.card{border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:none;padding:24px;margin-bottom:16px;background:var(--surface)}h2,h3{color:var(--primary);font-weight:600}h2,.card h2{font-size:18px;line-height:28px}h3{font-size:16px}.small,.byline{color:var(--muted);font-size:13px;line-height:20px}label{font-size:14px;font-weight:500;color:var(--primary)}input,select,textarea{border:1px solid var(--muted);border-radius:var(--radius-control);background:var(--surface);color:var(--primary);font-size:16px;min-height:48px;padding:10px 12px;box-sizing:border-box;max-width:100%}input[type=checkbox]{min-height:24px;width:24px!important;accent-color:var(--action)}input[type=range]{accent-color:var(--action);border:0}button{min-height:48px;border-radius:var(--radius-control);background:var(--action);color:var(--surface);font-weight:500;padding:12px 16px;font-size:14px}button:hover{background:var(--primary)}button.secondary,.chip,.preset-chip,.quick-chip{background:var(--action-surface);color:var(--primary)}button.secondary:hover{background:var(--border)}button:disabled{opacity:1;background:var(--background);color:var(--muted);border:1px solid var(--border);cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--primary);outline-offset:3px;box-shadow:0 0 0 3px var(--surface)}.skip-link{position:absolute;left:16px;top:-100px;background:var(--surface);padding:12px;z-index:100;color:var(--primary)}.skip-link:focus{top:12px}.part-nav{background:var(--surface);border:1px solid var(--border);box-shadow:none;border-radius:12px;padding:8px;gap:8px}.part-nav button{background:transparent;color:var(--muted);border-radius:8px}.part-nav button[aria-current=step]{background:var(--action-surface);color:var(--action)}.part-number{background:var(--background);color:var(--primary)}.pair{gap:16px}.sample{border:1px solid var(--border);border-left:3px solid var(--action);border-radius:12px;background:var(--surface);padding:20px;gap:16px;margin:16px 0}.sample-title{font-size:16px;color:var(--primary)}.sample-live{background:var(--action-surface);color:var(--action);padding:8px 12px;font-size:18px;border-radius:8px}.sample .delete-sample{color:var(--error);background:var(--error-surface)}.sample-details,.result-details{border:1px solid var(--border);border-radius:8px;background:var(--surface);margin:12px 0}.sample-details summary,.result-details summary{min-height:48px;padding:12px 16px;box-sizing:border-box;font-weight:500;color:var(--primary);cursor:pointer}.sample-details[open] summary,.result-details[open] summary{border-bottom:1px solid var(--border)}.result-details>div,.sample-details>div{padding:16px}.results{background:var(--primary);border-radius:12px;gap:24px;padding:24px}.results b{font-size:32px;line-height:40px;font-weight:500}.results small{color:var(--border);font-size:13px}.results>div+div b{font-size:22px}.assessment,.method{background:var(--background);color:var(--primary);border:1px solid var(--border);border-radius:8px;padding:16px;line-height:1.6}.assessment.pass{background:var(--success-surface);border-color:var(--success);color:var(--success)}.assessment.fail{background:var(--error-surface);border-color:var(--error);color:var(--error)}.warning{background:var(--warning-surface);color:var(--warning-text);border-left:3px solid var(--warning);border-radius:8px;padding:16px;font-size:13px}#error,.field-error{color:var(--error);font-size:13px}input[aria-invalid=true]{border:2px solid var(--error);background:var(--error-surface)}.field-error{display:block;font-weight:400;margin-top:4px}.report-card h2{border-color:var(--border)}.report-meta{background:var(--background);border-color:var(--border);border-radius:8px}.report-meta span{color:var(--muted)}table{font-variant-numeric:tabular-nums}th{background:var(--background);color:var(--primary);font-size:13px;font-weight:600}th,td{padding:12px;border-color:var(--border)}td strong{color:var(--action)}.scroll{max-width:100%;border-radius:8px}.mobile-sample-results .result-sample{background:var(--surface);border:1px solid var(--border);border-radius:8px}.result-sample strong{color:var(--action)}.result-sample dt{color:var(--muted)}.live-summary{background:var(--primary);border-radius:12px;border:1px solid var(--border);box-shadow:none}.live-summary .eyebrow{color:var(--border)}.live-summary button{background:var(--action);color:var(--surface)}.footer-actions{gap:8px}.data-menu{border-radius:var(--radius-dialog);border:1px solid var(--border);color:var(--primary);background:var(--surface)}.data-menu::backdrop{background:rgb(20 37 61 / .5)}.setup-panel{background:var(--surface);border-color:var(--border);border-radius:12px}.precision-status{display:inline-flex;align-items:center;gap:8px;padding:4px 12px;border-radius:8px;font-size:13px;font-weight:500;background:var(--background);color:var(--muted)}.precision-status[data-tone=success]{background:var(--success-surface);color:var(--success)}.precision-status[data-tone=error]{background:var(--error-surface);color:var(--error)}.precision-status[data-tone=warning]{background:var(--warning-surface);color:var(--warning-text)}.precision-panel{margin:16px 0;border:1px solid var(--border);padding:16px;border-radius:8px}.precision-panel h3{margin:0 0 8px}.precision-panel p{margin:8px 0}.precision-chart{margin:24px 0}.chart-list{list-style:none;padding:0;margin:16px 0}.chart-list li{display:grid;grid-template-columns:100px minmax(0,1fr) 132px;gap:12px;align-items:center;margin:12px 0;font-size:13px}.chart-track{height:12px;background:var(--background);border-radius:4px;overflow:hidden}.chart-bar{height:100%;background:var(--action);border-radius:4px}.chart-value{text-align:right;color:var(--primary)}.chart-reference{font-size:13px;color:var(--muted)}.precision-approval{border-left:3px solid var(--warning)}.precision-approval .precision-status{margin-bottom:8px}.report-card .results{margin-top:16px}.number-slider{max-width:100%}.out{gap:12px}.out button{flex:1 1 160px}
@media(min-width:760px){.part-nav{position:static}.pair{grid-template-columns:1fr 1fr}.part-panel .card{max-width:none}.precision-summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.live-summary{max-width:1072px}.part-nav button{padding:12px}.card>h2{margin-top:0}}
@media(max-width:759px){body>header{padding:20px 16px}.wrap{padding:16px 16px 200px}.part-lead{margin:16px 0}.part-lead h2{font-size:24px;line-height:32px}.card{padding:16px}.pair{grid-template-columns:1fr}.part-nav{border-radius:0;border:0;border-top:1px solid var(--border);padding:8px 4px calc(8px + env(safe-area-inset-bottom));gap:4px}.part-nav button{font-size:12px;min-width:0;padding:8px 4px}.sample{padding:16px;gap:12px}.results{padding:20px;gap:12px}.results b{font-size:28px;line-height:36px}.results>div+div b{font-size:18px}.live-summary{bottom:calc(84px + env(safe-area-inset-bottom));left:16px;right:16px;padding:12px}.live-summary strong{font-size:20px}.part-actions{gap:12px}.part-actions button{flex:1}.part-panel{min-width:0}.chart-list li{grid-template-columns:76px minmax(0,1fr) 114px;gap:8px}.chart-value{font-size:12px}.sample-details>div{padding:12px}.data-menu{width:calc(100% - 32px);max-height:80dvh;overflow:auto;box-sizing:border-box}.photo-grid{grid-template-columns:1fr}.report-meta{grid-template-columns:1fr}}
@media(max-width:480px){.results{grid-template-columns:1fr}.results>div+div{border-top:1px solid var(--muted);padding-top:12px}.sample{grid-template-columns:1fr 1fr}.sample>label:not(.load-label):not(.mass-label){grid-column:1/-1}.live-summary .live-sub{display:none}.live-summary{gap:8px}.footer-actions button{padding:10px;font-size:13px}.result-sample dl{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.skip-link,.precision-chart,.part-actions{display:none!important}.precision-panel{break-inside:avoid}.results{print-color-adjust:exact}.card{box-shadow:none}}
/* Legacy aliases inherit the canonical values; dialog is the existing combined file menu. */
:root{--ink:var(--primary);--accent:var(--action);--line:var(--border)}
dialog.data-transfer{border-radius:var(--radius-dialog);border-color:var(--border);background:var(--surface);color:var(--primary);box-shadow:none}dialog.data-transfer::backdrop{background:rgb(20 37 61 / .5)}.data-transfer .small{color:var(--muted)}.data-transfer #dataFileStatus{background:var(--background);color:var(--primary)}#openDataMenu{background:var(--action-surface);color:var(--primary)}.live-summary .eyebrow{color:var(--border)}
body{padding-bottom:0}.live-summary[data-status=pass]{border-left-color:var(--success)}.live-summary[data-status=fail]{border-left-color:var(--error)}.reusable-setup{background:var(--surface);border-color:var(--border)}.setup-details{border-color:var(--border);border-radius:var(--radius-control);background:var(--surface)}
@media(max-width:759px){.live-summary{transform:none;width:auto;left:16px;right:16px;box-sizing:border-box}.live-summary button{min-height:48px}.part-nav button[aria-current=step]{background:var(--action-surface);color:var(--action)}}
.cloud-panel{margin-top:24px;padding-top:16px;border-top:1px solid var(--border)}.cloud-panel h3{font-size:16px}.cloud-panel #cloudSignIn{display:inline-block;color:var(--action);font-weight:500;padding:12px 0}.cloud-panel [hidden]{display:none!important}.cloud-report-row{border:1px solid var(--border);border-radius:8px;padding:12px;margin:12px 0;overflow-wrap:anywhere}.cloud-report-row button{width:100%}.cloud-panel .buttons{grid-template-columns:1fr!important}.cloud-panel #cloudSearch{width:100%}.cloud-panel #cloudStatus{padding:12px 0}
/* ASTM C39 fracture-type helper */
.fracture-guide{grid-column:1/-1;margin:-4px 0 4px;border:1px solid var(--border);border-radius:10px;background:var(--surface-low);overflow:hidden}.fracture-guide summary{cursor:pointer;min-height:44px;padding:11px 12px;color:var(--primary);font-weight:700}.fracture-guide>p{padding:0 12px;line-height:1.55}.fracture-types{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:0 12px}.fracture-card{display:grid;grid-template-columns:58px 1fr;gap:8px;align-items:center;border:1px solid var(--border);border-radius:8px;padding:8px;background:var(--surface)}.fracture-card b{font-size:12px}.fracture-card p{font-size:11px;line-height:1.4;margin:3px 0 0;color:var(--muted)}.fracture-sketch{height:72px;position:relative;display:grid;place-items:center;background:#f5f8fa;border-radius:6px}.sketch-cylinder{display:block;width:24px;height:50px;border:2px solid var(--primary);border-radius:12px/6px;background:linear-gradient(90deg,#d7e2e6,#fff 45%,#c7d5db)}.sketch-crack{position:absolute;width:28px;height:3px;background:var(--error);transform-origin:center;border-radius:3px}.sketch-1{transform:rotate(0deg);top:28px;box-shadow:0 -11px 0 -1px var(--error),0 11px 0 -1px var(--error)}.sketch-2{transform:rotate(90deg);top:36px}.sketch-3{transform:rotate(35deg);top:35px;left:20px}.sketch-4{transform:rotate(-35deg);top:35px}.sketch-5{transform:rotate(0);top:21px;box-shadow:0 28px 0 var(--error)}.sketch-6{transform:rotate(90deg);top:28px;box-shadow:0 8px 0 var(--error),0 -8px 0 var(--error)}.fracture-note{padding-bottom:10px!important}@media(max-width:560px){.fracture-types{grid-template-columns:1fr}.fracture-card{grid-template-columns:52px 1fr}}