/* Release 1.0 — clearer learning and study surfaces. */
body.locked .shell,body.locked .mobile-nav{visibility:hidden}
[hidden]{display:none!important}
.nav-item[data-view="assistant"]{color:#587457}
.nav-item[data-view="settings"]{margin-top:4px;border-top:1px solid rgba(76,100,83,.08)}
.page-meta{display:flex;flex-wrap:wrap;align-items:end;gap:10px;padding:10px 0 14px;border-bottom:1px solid #e9eee7;margin-bottom:10px}
.page-meta label{display:flex;align-items:center;gap:8px;font-size:12px;color:#728072}
.page-meta .field{padding:8px 11px;min-width:125px;font-size:12px}
.page-meta #page-tags{width:150px}
#page-search{width:100%;margin:10px 0 8px;font-size:12px}
.pen-width-label{font-size:11px;color:#647468;display:flex;align-items:center;gap:5px;white-space:nowrap}
.pen-width-label input{width:62px;accent-color:#36654d}
.study-hero{border:1px solid #dbe7dc;border-radius:20px;background:#fff;padding:42px 38px}
.study-hero h2,.study-progress h2,.ai-intro h2,.settings-card h2{margin:6px 0 10px;font-size:26px;letter-spacing:-.035em}
.study-hero p,.ai-intro p{color:#6d8074;font-size:14px;line-height:1.6;max-width:570px}
.study-progress{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:17px}
.smart-study{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(230px,.8fr);gap:17px;align-items:start}
.study-main .rich-card{min-height:390px}
.study-subtitle{color:#6c7e70;font-size:13px;line-height:1.55;margin:14px 0}
.rich-card .field{width:100%;margin:8px 0 12px}
.writing-pad{border:1px solid #dfe6df;background:repeating-linear-gradient(to bottom,#fff,#fff 31px,#edf2ed 32px);border-radius:12px;overflow:hidden;margin:13px 0}
.writing-pad-head{background:rgba(248,250,247,.92);padding:7px 10px;display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:11px;color:#748575}
.writing-pad canvas{width:100%;height:145px;display:block;touch-action:none;cursor:crosshair}
.answer-reveal{margin:18px 0;padding:18px;border-radius:13px;background:#f1f7f0;text-align:left}
.answer-reveal h3{font-size:23px;color:#34654b;margin:7px 0}
.answer-reveal p{font-size:13px;color:#698071}
.compare-answer{padding:10px;background:#fff;border-radius:9px}
.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px}
.grades button{border-radius:11px;border:1px solid #d5e5d8;background:#fff;padding:10px 5px;color:#335b46;font-weight:700;cursor:pointer;font-size:12px}
.grades button:hover{background:#e6f1e7;border-color:#4f8b64}
.grades small{display:block;font-size:10px;font-weight:400;margin-top:5px;color:#829286}
.study-info{background:#fff;border:1px solid #e2eae3;border-radius:17px;padding:22px}
.study-info p,.study-info .study-metrics{font-size:13px;color:#6b7e6f;line-height:1.7}
.study-metrics b{font-size:24px;color:#386d50;display:block}
#study-ai-check{font-size:13px;color:#356e4a;margin:8px 0;line-height:1.6}
.ai-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(240px,.8fr);gap:18px;align-items:start}
.ai-main,.ai-history{background:#fff;border:1px solid #e0e8df;border-radius:17px;padding:24px}
.ai-prompts{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}
.ai-prompts button{border:1px solid #d9e6dc;background:#f7faf6;border-radius:22px;padding:8px 12px;font-size:12px;color:#4b7157;cursor:pointer}
.ai-prompts button:hover{border-color:#69a779;background:#edf5ed}
.assist-context{display:flex;align-items:center;gap:7px;font-size:12px;color:#6e816f;margin-bottom:11px}
.ai-question{min-height:140px;width:100%;resize:vertical;margin-bottom:12px}
.ai-answer{white-space:pre-wrap;font-size:14px;line-height:1.75;color:#385445;margin-top:20px;overflow-wrap:anywhere}
.ai-history h3{margin-top:0}.ai-history p{font-size:12px;color:#819181}
.ai-history-item{display:block;text-align:left;background:transparent;border:0;border-bottom:1px solid #edf2ed;padding:11px 2px;width:100%;cursor:pointer;color:#4f6752}
.ai-history-item b{display:block;font-size:12px;line-height:1.5;font-weight:500}
.ai-history-item small{font-size:10px;color:#91a192}
.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}
.settings-card{min-height:255px}
.settings-card .form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.settings-card label{font-size:12px;color:#6d806e}
.settings-card label .field{display:block;width:100%;margin-top:8px}
.settings-card p{line-height:1.7;font-size:13px;color:#6a7e6c}
.setting-check{display:flex;gap:8px;align-items:flex-start;margin:16px 0;line-height:1.5}
.settings-stats{display:flex;gap:22px;flex-wrap:wrap;padding-top:14px;border-top:1px solid #ebf0e9}
.settings-stats span{font-size:11px;color:#788b7a}.settings-stats b{display:block;color:#3a6750;font-size:20px}
#folder-pills{display:flex;flex-wrap:wrap;gap:7px;margin:14px 0}
#new-folder-name{min-width:180px;max-width:70%}
.versions-list{margin-top:14px;max-height:250px;overflow:auto}
.version-row{display:flex;justify-content:space-between;width:100%;border:0;border-bottom:1px solid #e7eee8;padding:11px;background:#fff;font-size:12px;text-align:left;color:#566f5b;cursor:pointer;gap:12px}
.version-row span{color:#428153;white-space:nowrap}
.invite-form{margin-top:16px;border-top:1px solid #e5eae4;padding-top:12px;font-size:12px;color:#6c7f72}
.invite-form summary{cursor:pointer}.invite-form form{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.invite-form input{border:1px solid #dce6dc;border-radius:9px;padding:10px}
@media(max-width:1050px){.smart-study,.ai-layout{grid-template-columns:1fr}}
@media(max-width:800px){.settings-grid{grid-template-columns:1fr}.grades{gap:5px}.grades button{font-size:11px}.page-meta{gap:8px}.page-meta #page-tags{width:120px}.ai-main,.ai-history{padding:16px}.study-hero{padding:25px}.study-hero h2,.study-progress h2,.ai-intro h2{font-size:22px}}
@media(max-width:460px){.settings-card .form-grid{grid-template-columns:1fr 1fr}.smart-study{margin-bottom:80px}.page-meta .field{min-width:100px}}