/* Shared density, navigation and diagrams. Loaded after page styles. */
html{scroll-padding-top:calc(var(--header-height) + 20px)}
body{line-height:1.55}.page{max-width:1440px}
.page-heading{gap:20px;margin-bottom:26px;align-items:center}
.page-heading h1{font-size:clamp(1.65rem,2.5vw,2.2rem);line-height:1.2;letter-spacing:-.035em}
.page-heading .sub{font-size:14px;line-height:1.6;margin-top:10px;max-width:68ch}
.eyebrow{letter-spacing:.09em}.card{border-radius:12px;box-shadow:none}
.sidebar-bottom{padding-top:20px}
.hdr .workspace-label{font-family:var(--font-sans);font-size:12px;letter-spacing:0}
.crumb{max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.metric-value,.dash-metric strong,.grade-total-number{font-variant-numeric:tabular-nums}
.metrics{margin:0 0 26px;gap:0;background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.metrics .metric{min-height:100px;padding:18px 24px;display:block;text-align:left;border-radius:0;background:transparent}
.metrics .metric+.metric{border-left:1px solid var(--border)}
.metrics .metric>div{width:auto;text-align:left}
.metrics .metric-label{font-size:12px;margin:0 0 8px;color:var(--text-muted)}
.metrics .metric-value{font-size:28px;line-height:1.2;font-weight:600}
.collection-heading{margin:0 0 14px}.collection-heading h2{font-size:15px;font-weight:600}
#assignments{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
#assignments .rowitem{display:flex;flex-direction:row;align-items:center;gap:24px;min-height:110px;padding:22px 24px;border-radius:12px;text-align:left;overflow:hidden}
#assignments .rowitem:hover{transform:none;background:var(--surface-raised);box-shadow:none}
#assignments .rowitem.resume{border-color:var(--accent-line);box-shadow:inset 3px 0 0 var(--accent)}
#assignments .rowitem.resume::before{display:none}
#assignments .rmain{display:block;flex:1;min-width:0;margin:0}
#assignments .rname{font:600 17px/1.4 var(--font-sans);letter-spacing:-.015em;overflow-wrap:anywhere;margin:0}
#assignments .rmeta{font-size:12px;color:var(--text-muted);margin-top:6px}
#assignments .assignment-bottom{margin:0;padding:0;border:0;flex:none;display:flex;align-items:center;gap:28px;width:min(42%,360px)}
#assignments .assignment-progress{flex:1;min-width:100px;max-width:190px;font-size:12px;color:var(--text-muted)}
#assignments .assignment-progress .bar{margin-top:9px;height:5px}
#assignments .go{font-size:13px;white-space:nowrap;margin:0;gap:6px}
#problems .rowitem{min-height:76px;padding:16px 18px}#problems .rname{font-size:15px}#problems .rmeta{font-size:12px}
.insights-page{max-width:1440px}.insights-page .card{border-radius:12px;box-shadow:none}
.dash-top{gap:20px;margin-bottom:20px;grid-template-columns:minmax(0,1.7fr) minmax(265px,1fr)}
.learning-hero{min-height:236px;padding:28px;border-radius:12px;background:var(--surface);border:1px solid var(--accent-line);color:var(--text);box-shadow:inset 3px 0 0 var(--accent)}
.learning-hero::after{display:none}
.hero-copy .eyebrow{font:600 11px var(--font-sans);color:var(--accent-ink);letter-spacing:.06em;margin-bottom:14px}
.hero-copy h2{font:600 clamp(1.4rem,2vw,1.9rem)/1.25 var(--font-display);max-width:30ch;margin-bottom:10px}
.hero-copy>p:not(.eyebrow){font-size:13px;color:var(--text-muted);max-width:62ch;line-height:1.65;margin-bottom:22px}
.learning-hero .action-link{background:var(--accent);color:var(--on-accent)}.learning-hero .action-link:hover{background:var(--accent-hover)}
.week-card{padding:20px}.week-card .insight-section-title{margin-bottom:14px}.week-heading strong{font-size:27px}
.activity-chart{height:86px;margin:12px 0 8px}.activity-bar-space{height:52px}
.dash-metrics{gap:0;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--surface);margin-bottom:24px}
.insights-page .dash-metric{display:block;padding:18px 22px;border:0;border-radius:0;background:transparent}
.dash-metric+.dash-metric{border-left:1px solid var(--border)!important}
.dash-metric p{font-size:12px}.dash-metric strong{font-size:28px;font-weight:600;line-height:1.25;margin:8px 0 6px}
.dash-metric small{display:block;font-size:11px;line-height:1.5}
.dash-columns{gap:20px;grid-template-columns:minmax(0,1.4fr) minmax(300px,1fr)}
.dash-column{gap:20px}.dash-column>.card{padding:22px}
.insight-section-title{margin-bottom:18px}.insight-section-title h2{font-size:15px}
.assignment-progress-list{gap:16px}.assignment-progress-item{padding-bottom:16px}
.assignment-progress-head a{font-size:13px}.assignment-progress-head{gap:12px}
.next-list{gap:0}.next-list>li+li{border-top:1px solid var(--border)}
.next-link{padding:14px 0;border:0;border-radius:0;gap:12px}.next-link:hover{background:var(--accent-tint)}
.next-number{background:none;width:22px;height:auto;color:var(--text-subtle);font-size:11px}
.next-copy strong{font-size:13px}.next-copy small{line-height:1.55;overflow-wrap:anywhere}
.activity-list{gap:0}.activity-item{display:grid;grid-template-columns:26px minmax(0,1fr) auto;gap:10px;padding:13px 0;align-items:start}
.activity-item+.activity-item{border-top:1px solid var(--border)}.activity-icon{width:24px;height:24px;font-size:12px}
.activity-copy a{font-size:13px;overflow-wrap:anywhere}.activity-copy p{font-size:11px;margin:3px 0 0;line-height:1.5}
.activity-item>time{font-size:10px;color:var(--text-subtle);max-width:76px;text-align:right;line-height:1.5;padding-top:3px}
.milestone{padding:10px 0;border-radius:0;background:transparent!important}
.milestone strong{font-size:12px}.milestone small{font-size:11px;line-height:1.6}
.grade-total,.grade-summary{padding:22px}.grade-total-number{font-size:42px}
.grade-group-header{padding:16px 20px}.grade-table th,.grade-table td{padding:14px 18px}
.grade-filters{gap:12px;margin-bottom:20px}.grade-group-header h2{font-size:14px}.grades-top{gap:20px}
/* Workspace controls stay next to the plan, without another oversized card. */
.guided-workspace{scroll-margin-top:calc(var(--header-height) + 20px)}
.guided-workspace .studio-heading{padding-top:0;margin-bottom:18px}
.guided-workspace .studio-title h1{line-height:1.2;font-size:clamp(1.5rem,2.1vw,2rem)}
.guided-workspace .studio-title .eyebrow{display:none}.guided-workspace .journey{margin-bottom:20px}
.guided-workspace .studio-brief .pane-title{padding:14px 20px}
.guided-workspace .studio-brief .statement{padding:20px;font-size:14px;line-height:1.8;max-height:none}
.guided-workspace .learning-text pre{font-size:12px;line-height:1.7;padding:14px 16px}
.workspace-jumps{display:none}
.plan-preview{border-radius:12px;overflow:hidden;scroll-margin-top:calc(var(--header-height) + 20px)}
.plan-preview-head{display:flex;align-items:center;flex-wrap:wrap;padding:16px 20px 8px;border:0;gap:8px 16px}
.plan-preview-head h2{font:600 15px var(--font-sans);margin:0}
#planPreviewStatus{display:inline;flex:1;min-width:150px;text-align:right;font-size:11px;line-height:1.5;color:var(--text-subtle)}
.plan-stage-help{margin:0;padding:0 20px 14px;font-size:12px;color:var(--text-muted)}
.plan-submit-row{padding:0 20px 16px;display:block;margin:0}
.plan-action-buttons{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.plan-action-buttons button{font-size:12px;min-height:40px;padding:9px 13px}.plan-action-buttons #planSubmitBtn{margin-left:auto}
/* Quiet, and on the far side of the row from "Submit plan for review".
   Same treatment as the coding bar: present, findable, never competing
   with the action the student is actually here to take. */
.plan-action-buttons [data-restart]{font-weight:500;opacity:.75}
.plan-action-buttons [data-restart]:hover{opacity:1}
.plan-upload{margin:0 20px 16px;font-size:12px;color:var(--text-muted)}
.plan-upload>summary{width:fit-content;padding:6px 0;cursor:pointer}
.guided-workspace .plan-upload .designPanel{padding:16px 0 4px;text-align:left;border:0;border-radius:0;background:transparent}
.guided-workspace .plan-upload .designPanel h3{font-size:14px;margin:0 0 6px}
.guided-workspace .plan-upload .designPanel>p{margin:0 0 14px;max-width:65ch;font-size:12px;line-height:1.65}
.guided-workspace .plan-upload .designPanel .drop{margin:0;max-width:none;padding:20px;text-align:center;border-radius:8px}
.guided-workspace .plan-upload .designPanel>.row{justify-content:flex-start!important;margin-top:12px!important}
.plan-upload .designPanel details{max-width:none;margin:14px 0 0;font-size:12px}
.plan-upload .designPanel details ul{margin:8px 0 0;padding-left:18px}
.plan-upload .designPanel .dpick{justify-items:start;justify-content:flex-start;margin-top:12px}
.plan-preview #planFeedback{margin:0 20px}.plan-preview .plan-approved{margin:0 20px 16px;padding:16px}
.plan-preview #planCard{margin:0;padding:0 16px 16px;border:0;background:transparent}
.plan-preview #planCard>.chead,.plan-preview #planCard>#planHint{display:none}
.plan-empty{padding:12px 20px 22px;font-size:13px}#planLive:empty{display:none}
.guided-workspace .workspace-status:empty,.guided-workspace .workspace-notice:empty{display:none}
.guided-workspace .chat{height:clamp(440px,calc(100dvh - 240px),800px)}
.guided-workspace .clog{padding:16px;gap:16px}.guided-workspace .tutor-context{color:var(--text-muted)}
.guided-workspace .chat .chead{min-height:62px}.guided-workspace .cfoot textarea{font-size:14px}
.guided-workspace .bub{font-size:13px;line-height:1.75}
/* Shared graph treatment for student plans, code, and instructor previews. */
.graph-frame{border:1px solid var(--border);border-radius:10px;background:var(--code-bg);overflow:hidden;min-width:0}
.graph-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--surface)}
.graph-toolbar>span{font-size:11px;color:var(--text-muted)}
.graph-tools{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.graph-tools button{font:500 11px var(--font-sans);padding:6px 9px;min-height:32px;min-width:32px;box-shadow:none}
.graph-tools .gzlevel{font-variant-numeric:tabular-nums;min-width:48px}
.graph-frame .gview,.guided-workspace #planLive .graph-frame .gview{display:block;position:relative;overflow:auto;max-height:none;background:var(--code-bg);border:0;border-radius:0;touch-action:pan-x pan-y;overscroll-behavior:auto;scrollbar-gutter:stable}
.graph-frame .gview>svg{display:block;max-width:none;max-height:none;margin-inline:auto;touch-action:pan-x pan-y;cursor:grab}
.graph-frame .gview.panning>svg{cursor:grabbing}.graph-frame .gview:focus-visible{outline-offset:-3px}
.graph-help{font-size:11px;color:var(--text-subtle);margin:0;padding:8px 12px;border-top:1px solid var(--border);background:var(--surface)}
.graph-outline{margin-top:10px;font-size:12px;color:var(--text-muted)}.graph-outline summary{cursor:pointer;padding:5px 0}
.graph-outline ol{padding-left:24px;max-height:280px;overflow:auto;line-height:1.6}.graph-outline li{padding:7px 4px}
.graph-outline li strong{font-weight:500;color:var(--text)}.graph-outline li span{display:block;font-size:11px;margin-top:3px}
.graph-frame:fullscreen,.graph-frame.gfake{display:flex;flex-direction:column;background:var(--code-bg);border:0;border-radius:0;padding:16px}
.graph-frame.gfake{position:fixed;inset:0;z-index:1000}
.graph-frame:fullscreen .gview,.graph-frame.gfake .gview,.guided-workspace #planLive .graph-frame:fullscreen .gview,.guided-workspace #planLive .graph-frame.gfake .gview{height:auto!important;max-height:none;flex:1}
.graph-frame:fullscreen .graph-toolbar,.graph-frame.gfake .graph-toolbar{flex:none}
.graph-loading,.graph-load-error{min-height:235px;padding:26px 20px;text-align:center;border:1px solid var(--border);border-radius:10px;background:var(--code-bg)}
.graph-loading>.spin{display:inline-block;vertical-align:middle;margin-right:8px}
.graph-loading>strong,.graph-load-error>strong{font-size:13px;font-weight:500}
.graph-loading>p,.graph-load-error>p{font-size:12px;color:var(--text-subtle);margin:8px 0 16px}
.graph-loading-nodes{display:flex;flex-direction:column;align-items:center;gap:5px;color:var(--border-strong)}
.graph-loading-nodes i{width:135px;height:25px;border:1px solid var(--border);border-radius:5px}.graph-loading-nodes span{font-size:16px;line-height:1}
.gLegend{gap:12px;flex-wrap:wrap}.gLegend li{font-size:10px}.graphMeta{margin-bottom:10px}
/* Native dialogs supply focus containment, Escape, and background inertness. */
.acadia-dialog{width:min(520px,calc(100vw - 32px));max-height:calc(100dvh - 48px);padding:28px;border:1px solid var(--border);border-radius:16px;background:var(--surface);color:var(--text);box-shadow:var(--shadow-2);overflow:auto}
.acadia-dialog::backdrop{background:var(--scrim)}
.acadia-dialog h2{font:600 24px/1.25 var(--font-display);margin:0 0 16px;letter-spacing:-.025em}
.acadia-dialog>p{font-size:14px;color:var(--text-muted);line-height:1.7}
.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.dialog-heading h2{margin:0}
.dialog-heading>button{min-width:36px;min-height:36px;padding:0;font-size:24px}
.settings-section{padding-top:22px;margin-top:22px;border-top:1px solid var(--border)}.settings-section h3{font-size:15px;margin:0 0 8px}
.settings-section p{font-size:13px;color:var(--text-muted);line-height:1.65;margin:0 0 14px}
.settings-name{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:end}
.settings-name label{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--text-muted)}
.settings-name input{width:100%;min-height:40px;padding:9px 11px;font:inherit;font-size:13px;color:var(--text);background:var(--surface-raised);border:1px solid var(--border);border-radius:8px}
.settings-name input:focus-visible{outline:2px solid var(--accent-ink);outline-offset:1px}
.settings-name button{grid-column:1 / -1;justify-self:start;min-height:40px}
.settings-theme{display:flex;gap:8px}.settings-theme button{min-width:86px}
.settings-theme button.on{background:var(--accent-tint-strong);border-color:var(--accent-line);color:var(--accent-ink)}
.settings-note,.acadia-dialog .settings-note{font-size:11px;color:var(--text-subtle);line-height:1.65;margin:14px 0 0}
.welcome-path{margin:20px 0;padding-left:24px;color:var(--text);font-size:14px}.welcome-path li{padding:6px}
.dialog-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-top:22px}
body[data-portal="instructor"] .page-heading{margin-bottom:24px}body[data-portal="instructor"] .filters{gap:12px}
@media(max-width:1150px){
 .page{padding-left:24px;padding-right:24px}.dash-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .dash-metric:nth-child(3){border-left:0!important}.dash-metric:nth-child(n+3){border-top:1px solid var(--border)!important}
 #assignments .assignment-bottom{width:40%;gap:18px}#assignments .go{font-size:12px}
}
@media(max-width:1000px){
 .workspace-jumps{display:flex;gap:8px;justify-content:flex-end;margin:0 0 14px}.workspace-jumps button{font-size:12px;min-height:38px;padding:8px 12px}
 .tutor-dock{scroll-margin-top:calc(var(--header-height) + 16px)}.guided-workspace .chat{height:min(560px,75dvh)}
 .guided-workspace .cfoot textarea{font-size:16px}.dash-columns{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:760px){
 .page{padding-left:16px;padding-right:16px}.page-heading{flex-wrap:wrap;gap:14px;margin-bottom:20px}.page-heading .sub{font-size:13px}
 .metrics .metric{padding:16px;min-height:90px}.metrics .metric-label{font-size:11px}.metrics .metric-value{font-size:24px}
 #assignments .rowitem{min-height:0;display:block;padding:18px}#assignments .rname{font-size:16px}
 #assignments .assignment-bottom{width:100%;margin-top:16px;gap:20px}#assignments .assignment-progress{max-width:none}
 .dash-top{grid-template-columns:minmax(0,1fr);gap:16px;margin-bottom:16px}.learning-hero{min-height:205px;padding:22px}
 .insights-page .dash-metric{padding:16px}.dash-metric strong{font-size:25px}.dash-column>.card{padding:20px}
 .assignment-progress-head{align-items:flex-start}.assignment-progress-head span{white-space:normal;text-align:right;min-width:70px}
 .plan-preview-head{padding:14px 16px 8px}#planPreviewStatus{font-size:11px;min-width:0;text-align:left;flex-basis:100%}
 .plan-stage-help{padding:0 16px 12px}.plan-submit-row{padding:0 16px 14px}
 .plan-action-buttons{display:grid;grid-template-columns:1fr 1fr;gap:8px}.plan-action-buttons button{width:100%;padding:8px;font-size:11px;white-space:normal}
 .plan-upload{margin:0 16px 14px}.plan-preview .plan-approved{margin:0 16px 14px}.plan-preview #planCard{padding:0 12px 12px}
 .graph-toolbar{gap:6px;padding:7px 8px}.graph-toolbar>span{display:none}.graph-tools{width:100%;justify-content:flex-end}.graph-tools button{min-height:36px}
 .graph-help{font-size:10px;padding:8px}.guided-workspace .studio-brief .statement{padding:16px;font-size:14px}
 .guided-workspace .studio-brief .pane-title{padding:14px 16px}.acadia-dialog{padding:22px}
}
@media(max-width:380px){
 .metrics .metric{padding:12px 10px}.metrics .metric-label{font-size:10px}
 .activity-item{grid-template-columns:24px minmax(0,1fr)}.activity-item>time{grid-column:2;text-align:left;max-width:none;padding:0}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.graph-loading .skel{animation:none}}

:root[data-theme="light"] .graph-frame .gview{background:var(--code-bg)}
.metrics .metric{border-right:0}