/* Phase 2 Lab Studio: modular visual language on existing learn/ai tokens */
.studio-shell { --studio-panel:var(--panel);--studio-border:var(--line);--studio-accent:#4166d6;--studio-heading:var(--bg-soft);max-width:1320px;margin:0 auto;padding:26px 24px 70px;color:var(--text);}
.studio-crumb {font-size:13px;color:var(--muted);margin:0 0 24px}.studio-crumb a {color:var(--link)}.studio-crumb a:hover{text-decoration:underline}
.studio-kicker {font-size:12px;color:var(--studio-accent);letter-spacing:.11em;font-weight:800;display:block;margin-bottom:8px}
.studio-top {display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 24px}.studio-top h1,.studio-hero h1{font-size:clamp(30px,3.3vw,44px);letter-spacing:-.035em;margin:0 0 11px}.studio-top p,.studio-hero p {margin:0;max-width:760px;color:var(--muted)}
.studio-progress {flex:none;background:var(--bg-soft);border:1px solid var(--line);padding:9px 13px;border-radius:99px;font-size:12px;font-weight:700;color:var(--ink)}
.studio-hero{padding:34px 0 24px}.studio-hero p{font-size:17px}.studio-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:24px 0 30px}.studio-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;min-height:270px;transition:border-color .2s,transform .2s}.studio-card:hover{border-color:var(--studio-accent);transform:translateY(-3px)}
.studio-icon{display:grid;place-items:center;background:var(--bg-soft);border:1px solid var(--line);color:var(--studio-accent);height:56px;width:56px;border-radius:15px;font-size:29px;font-weight:600;margin-bottom:14px}.studio-flag{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}.studio-card h2{font-size:21px;margin:9px 0}.studio-card p{font-size:14px;color:var(--muted);margin:0 0 18px;flex:1}.studio-card-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted)}.studio-card-footer b{color:var(--link);font-size:14px}
.studio-method{background:var(--bg-soft);padding:25px;border-radius:15px}.studio-method h2{font-size:20px;margin:0 0 12px}.studio-method ol{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:0 0 0 19px}.studio-method li{font-size:14px}.studio-method p{font-size:13px;color:var(--muted);margin:13px 0 0}
.studio-layout {display:grid;grid-template-columns:minmax(315px, .94fr) minmax(0,1.06fr);gap:16px}.studio-panel{min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:20px;box-shadow:var(--shadow)}
.studio-panel-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 12px;justify-content:space-between;margin-bottom:17px}.studio-panel-head h2{font-size:19px;margin:0}.studio-panel-head span{font-size:12px;color:var(--muted)}.studio-panel h3{font-size:15px;margin:20px 0 9px}.studio-panel p{font-size:14px;line-height:1.6}
.studio-tip{padding:15px 18px;background:var(--bg-soft);border-left:4px solid var(--studio-accent);border-radius:9px;margin-bottom:20px;font-size:14px}.studio-caption,.studio-muted{color:var(--muted);font-size:12px!important}.studio-label{display:block;font-size:12px;font-weight:700;color:var(--ink);margin:14px 0 6px}
.studio-panel textarea,.studio-panel select,.studio-panel input{width:100%;padding:10px 11px;border:1px solid var(--line-strong);border-radius:9px;background:var(--bg);color:var(--ink);font:inherit;font-size:14px}.studio-panel textarea{font-family:var(--mono);font-size:13px;line-height:1.7;resize:vertical;min-height:170px;tab-size:4}.studio-panel select{max-width:100%}.studio-actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:16px 0}.studio-actions button,.studio-preset button,.studio-inline button{border:1px solid var(--line-strong);border-radius:9px;padding:9px 13px;font-size:13px;background:var(--bg-soft);font-weight:700}.studio-actions button:hover:not(:disabled),.studio-preset button:hover{border-color:var(--studio-accent)}.studio-actions button:disabled{opacity:.4;cursor:not-allowed}.studio-actions .studio-primary,.studio-inline .studio-primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.studio-preset {display:flex;gap:7px;flex-wrap:wrap}.studio-preset button{font-size:12px;padding:8px 10px}.studio-preset button.active,.studio-actions button.picked{border-color:var(--studio-accent);color:var(--studio-accent);background:var(--bg-soft)}
.studio-code-list{max-height:255px;overflow:auto;background:var(--code-bg);border:1px solid var(--line);border-radius:9px;margin-top:18px;font-size:12px}.studio-code-list div{display:flex;align-items:baseline;white-space:pre}.studio-code-list div.current{background:#4166d622;box-shadow:inset 3px 0 #4166d6}.studio-code-list span{color:var(--muted);padding:6px 13px;min-width:37px;border-right:1px solid var(--line);text-align:right}.studio-code-list code{padding:6px 10px;white-space:pre;color:var(--ink)}
.studio-event{border:1px solid var(--line);background:var(--bg-soft);border-radius:9px;padding:10px 12px;min-height:45px}.studio-table{width:100%;border-collapse:collapse;font-size:13px}.studio-table th,.studio-table td{text-align:left;border-bottom:1px solid var(--line);padding:9px 10px;word-break:break-word}.studio-table thead th{background:var(--bg-soft);color:var(--ink);font-weight:700}.studio-console,.studio-sql{padding:15px;background:var(--code-bg);color:var(--ink);border:1px solid var(--line);border-radius:9px;white-space:pre-wrap;overflow-x:auto;font-size:12px;line-height:1.6}
.studio-checkpoint{margin:16px 0 0;border-left:4px solid var(--studio-accent)}.studio-checkpoint>p{max-width:850px}.studio-inline{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.studio-inline label{margin:0}.studio-inline input{max-width:250px}.studio-result{color:var(--muted);font-size:13px!important;margin:13px 0}.studio-result.pass,.studio-criterion.pass{color:var(--ok)}.studio-result.retry,.studio-criterion.retry{color:var(--bad)}.studio-criterion{font-size:12px!important;margin:4px 0 10px}
.studio-stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:20px 0 12px}.studio-stat-grid div{display:flex;flex-direction:column;background:var(--bg-soft);border:1px solid var(--line);padding:15px;border-radius:10px}.studio-stat-grid b{font-size:26px;color:var(--ink)}.studio-stat-grid span{font-size:11px;color:var(--muted)}
.studio-neural-visual{display:grid;grid-template-columns:minmax(175px,252px) 1fr;gap:17px;align-items:start}.studio-heatmap{display:block;max-width:100%;height:auto;border-radius:9px;border:1px solid var(--line)}.studio-loss{width:100%;max-height:185px}.studio-erd{width:100%;height:auto;display:block;max-height:290px;overflow:visible}.studio-privacy{font-size:12px!important;color:var(--muted);margin:24px 0}.studio-privacy a{color:var(--link)}
.studio-lesson-launch{margin:19px 0;padding:17px;background:var(--bg-soft);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px}.studio-lesson-launch h2{font-size:18px;margin:0 0 6px}.studio-lesson-launch p{font-size:14px;color:var(--muted);margin:0 0 12px}.studio-lesson-launch a{display:inline-flex;gap:8px;font-weight:750;color:var(--link);font-size:14px}.studio-course-link{margin-top:12px;border:1px solid var(--line);padding:12px;border-radius:10px;background:var(--bg-soft)}.studio-course-link a{color:var(--link);font-size:13px;font-weight:750}
@media(max-width:970px){.studio-layout{grid-template-columns:1fr}.studio-cards{grid-template-columns:repeat(2,1fr)}.studio-method ol{grid-template-columns:repeat(2,1fr)}.studio-top{align-items:start;flex-direction:column}}
@media(max-width:600px){.studio-shell{padding:18px 13px 50px}.studio-cards{grid-template-columns:1fr}.studio-card{min-height:auto}.studio-method ol{grid-template-columns:1fr}.studio-panel{padding:15px}.studio-neural-visual{grid-template-columns:1fr}.studio-heatmap{max-width:230px}.studio-stat-grid b{font-size:21px}.studio-inline input{max-width:100%}.studio-inline button{width:100%}.studio-top h1,.studio-hero h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){.studio-card{transition:none}.studio-card:hover{transform:none}}