/* Be Vietnam Pro — SIL Open Font License 1.1 (web/fonts/OFL.txt); self-hosted so the teacher's browser never calls a font CDN. */
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(./fonts/be-vietnam-pro-400-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(./fonts/be-vietnam-pro-400-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(./fonts/be-vietnam-pro-400-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(./fonts/be-vietnam-pro-500-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(./fonts/be-vietnam-pro-500-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(./fonts/be-vietnam-pro-500-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(./fonts/be-vietnam-pro-600-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(./fonts/be-vietnam-pro-600-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(./fonts/be-vietnam-pro-600-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:700;font-display:swap;src:url(./fonts/be-vietnam-pro-700-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:700;font-display:swap;src:url(./fonts/be-vietnam-pro-700-latin-ext.woff2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:700;font-display:swap;src:url(./fonts/be-vietnam-pro-700-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
:root{color-scheme:light;--ink:#1c2a3d;--muted:#56606e;--accent:#A34B24;--accent-dark:#7e3819;--line:#e5d6c1;--surface:#FFFCF7;--bg:#F5EADB;--mm-cream:#F5EADB;--mm-ivory:#FFFCF7;--mm-navy:#243852;--mm-brand-orange:#C96A36;--mm-orange-accessible:#A34B24;--blue:#eaf4fc;--warn:#fff3dc;--danger:#a73929;--shadow:0 8px 28px #24385214;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.5}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg)}button,input,select{font:inherit}button{cursor:pointer}a{color:inherit}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #C96A36;outline-offset:2px}
.shell{min-height:100vh}.topbar{background:#243852;color:white;display:flex;align-items:center;justify-content:space-between;padding:17px max(24px,calc((100vw - 1160px)/2));gap:20px}.brand{font-weight:750;font-size:19px;letter-spacing:-.3px}.brand small{font-size:12px;display:block;font-weight:400;color:#d6dfeb}.top-state{font-size:12px;border:1px solid #5d7392;border-radius:20px;padding:5px 10px;color:#e9eef5}.page{max-width:1160px;margin:0 auto;padding:28px 24px 72px}
.nav{display:flex;align-items:center;gap:9px;margin-bottom:24px;color:var(--muted);font-size:13px}.nav button{color:var(--accent);border:0;background:transparent;padding:6px 3px}.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:22px}h1{font-size:clamp(25px,3vw,33px);line-height:1.23;letter-spacing:-.8px;margin:0 0 8px}h2{font-size:21px;letter-spacing:-.3px;margin:0 0 14px}h3{font-size:16px;margin:0 0 9px}p{margin:0 0 12px}.muted,.sub{color:var(--muted)}.sub{font-size:14px}.eyebrow{color:var(--accent);font-size:12px;font-weight:760;text-transform:uppercase;letter-spacing:.8px;margin:0 0 8px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.card+ .card{margin-top:12px}.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-bottom:22px}.metric strong{display:block;font-size:29px;line-height:1.2}.metric span{color:var(--muted);font-size:13px}.list-row{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:17px 0}.list-row:first-of-type{border-top:0}.row-title{font-weight:760;font-size:16px}.row-sub{font-size:13px;color:var(--muted);margin-top:3px}.right{display:flex;align-items:center;gap:12px}.table-scroll{overflow-x:auto}.data-table{width:100%;border-collapse:collapse;text-align:left}.data-table th{padding:10px 12px;font-size:12px;color:var(--muted);border-bottom:1px solid var(--line);font-weight:680}.data-table td{padding:13px 12px;border-bottom:1px solid var(--line);font-size:14px}.data-table tbody tr:last-child td{border-bottom:0}
.btn{border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);min-height:44px;padding:10px 16px;font-weight:690;display:inline-flex;align-items:center;justify-content:center;gap:7px;text-decoration:none;white-space:nowrap}.btn:hover{background:#f7ecdf}.btn-primary{background:var(--accent);border-color:var(--accent);color:white}.btn-primary:hover{background:var(--accent-dark)}.btn-quiet{background:transparent;border-color:transparent;color:var(--accent)}.btn-danger{color:var(--danger)}.btn:disabled{opacity:.5;cursor:not-allowed}.actions{display:flex;gap:10px;flex-wrap:wrap}.pill{display:inline-block;font-size:12px;font-weight:750;white-space:nowrap;padding:5px 10px;border-radius:99px}.pill-pending{background:#fff1d9;color:#815700}.pill-approved{background:#e3f6ee;color:#186a52}.pill-incomplete{background:#eaeff2;color:#5b6770}
.help{background:#fbf3e8;border:1px solid #ecd9bf;border-radius:12px;padding:13px 16px;color:#3a4658;font-size:13px;margin:15px 0}.warning{background:var(--warn);border-color:#edd4a2;color:#694a06}.two-col{display:grid;grid-template-columns:1.12fr .88fr;gap:18px;align-items:start}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field label{display:block;font-size:13px;font-weight:700;margin:0 0 6px}.field input,.field select{min-height:44px;padding:10px 12px;border:1px solid #bfae97;border-radius:10px;background:white;color:var(--ink);width:100%}.field small{font-size:12px;color:var(--muted)}.block-title{font-size:13px;font-weight:780;letter-spacing:.4px;text-transform:uppercase;color:var(--muted);margin:21px 0 12px}.answer-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px}.answer-grid .field label{font-size:12px}.score-box{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:18px;background:#f7ecdf;border-radius:13px;margin:20px 0}.score-box strong{font-size:28px;color:var(--accent-dark)}.small-note{font-size:12px;color:var(--muted)}.image-area{border:1.5px dashed #c2ab8c;border-radius:13px;padding:16px;text-align:center;background:#fbf5ec}.image-area img{max-height:350px;width:100%;object-fit:contain;margin-top:12px;border-radius:10px}.alert{border-left:4px solid var(--danger);background:#fff2ef;padding:12px 14px;border-radius:8px;margin:10px 0;color:#7c3326}.empty{padding:30px;text-align:center;color:var(--muted)}.stats-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:18px 0}.statline{background:#fbf5ec;border:1px solid var(--line);padding:13px;border-radius:12px}.statline strong{display:block;font-size:22px}.bars{display:flex;align-items:center;gap:12px;margin:12px 0}.bars label{min-width:100px;font-size:13px}.bartrack{flex:1;height:9px;background:#e8eeec;border-radius:9px;overflow:hidden}.barfill{height:100%;background:#C96A36}.barvalue{width:44px;text-align:right;font-size:13px;font-weight:700}.cluster{margin-top:16px;border-top:1px solid var(--line);padding-top:15px}.cluster-title{font-weight:730}.cluster-desc{font-size:13px;color:var(--muted);margin-top:5px}.footer{color:#56606e;margin-top:38px;padding-top:17px;border-top:1px solid var(--line);font-size:12px}.toast{position:fixed;z-index:4;right:20px;bottom:22px;background:#243852;color:white;padding:13px 19px;border-radius:12px;box-shadow:var(--shadow);max-width:calc(100vw - 40px)}.hidden{display:none!important}
@media(max-width:760px){.topbar{padding:15px 18px}.top-state{max-width:130px;text-align:center}.page{padding:23px 15px 65px}.metric-grid{grid-template-columns:1fr 1fr;gap:10px}.metric-grid .card{padding:16px}.metric-grid .card:last-child{grid-column:span 2}.two-col{grid-template-columns:1fr}.section-head{flex-direction:column;align-items:stretch}.section-head .actions{width:100%}.section-head .actions .btn{flex:1}.card{padding:17px}.list-row{align-items:flex-start}.right{flex-direction:column;align-items:flex-end}.answer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.fields{grid-template-columns:1fr}.score-box strong{font-size:26px}.data-table{min-width:540px}.nav{flex-wrap:wrap}}
@media(max-width:390px){.brand{font-size:16px}.answer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.top-state{font-size:11px}.btn{padding:10px 12px}}

/* P1 & P2: local-only direct multi-image intake. */
.intake{margin-bottom:16px;border-color:#e1cdb1;background:#f9fffc}
.intake .btn{margin:5px 0 10px}.intake .small-note{margin-top:6px}.file-step{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;color:var(--muted);font-size:13px;flex-wrap:wrap}.file-step .actions .btn{min-height:44px}.pdf-viewer{border:1px solid var(--line);width:100%;height:410px;border-radius:8px;margin-top:12px;background:white}@media(max-width:760px){.pdf-viewer{height:350px}.file-step .actions{width:100%}.file-step .btn{flex:1}}

.file-input-offscreen{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;opacity:0!important;left:-10000px!important}

/* WEB-P2 styles */
.btn-sm{min-height:34px;padding:5px 12px;font-size:12px}
.batch-tray{margin-top:16px;border-top:1px solid var(--line);padding-top:16px}
.batch-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin-bottom:16px}
.batch-stat{background:white;border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center}
.batch-stat strong{display:block;font-size:20px;color:var(--ink)}
.batch-stat span{font-size:11px;color:var(--muted)}
.thumb-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(115px,1fr));gap:10px;margin:14px 0}
.thumb-card{background:white;border:1px solid var(--line);border-radius:10px;padding:7px;text-align:center;font-size:11px;box-shadow:0 2px 6px #00000008}
.thumb-img{width:100%;height:80px;object-fit:cover;border-radius:6px;display:block;margin-bottom:6px;background:#eef3f1}
.thumb-name{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.thumb-badge{font-size:10px;font-weight:700;padding:2px 6px;border-radius:99px;display:inline-block;margin-top:4px}
.pill-conflict{background:#fde8e8;color:#9b1c1c}
.pill-review{background:#fef08a;color:#713f12}
.pill-intake{background:#d1fae5;color:#065f46}
.unidentified-box{background:#fffbf2;border:1.5px dashed #d97706;border-radius:12px;padding:14px;margin-top:14px}
.unidentified-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid #fde68a;flex-wrap:wrap}
.unidentified-item:first-of-type{border-top:none}
.page-switcher{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap;align-items:center}
.intake-banner{background:#fbf3e8;border-left:4px solid var(--accent);border-radius:8px;padding:12px 14px;margin-bottom:16px}
.intake-banner strong{font-size:14px;color:var(--accent-dark)}

/* Emergency Public Preview UI & Hero Styles */
.hero{background:linear-gradient(135deg,#243852 0%,#33507a 100%);color:white;border-radius:20px;padding:32px 28px;margin-bottom:24px;box-shadow:0 12px 36px #24385226;border:1px solid #3d5a82}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.14);border:1px solid rgba(255,255,255,0.25);border-radius:99px;padding:5px 14px;font-size:12px;font-weight:600;letter-spacing:.3px;margin-bottom:16px;color:#F5EADB}
.hero-brand{margin:0 0 10px;color:#F5EADB;font-size:14px;line-height:1.5}.hero-brand strong{display:block;color:white;font-size:16px}
.hero h1{font-size:clamp(26px,3.8vw,36px);font-weight:800;line-height:1.2;margin:0 0 12px;color:white;letter-spacing:-.6px}
.hero-desc{font-size:clamp(14px,1.8vw,16px);line-height:1.6;color:#e9eef5;max-width:820px;margin:0 0 24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.btn-lg{min-height:48px;padding:12px 22px;font-size:15px;font-weight:700;border-radius:12px}
.btn-emerald{background:#A34B24;border-color:#C96A36;color:#fff}.btn-emerald:hover{background:#8d3f1e}
.btn-emerald:hover{background:#8d3f1e}
.btn-ghost-white{background:rgba(255,255,255,0.12);border-color:rgba(255,255,255,0.3);color:white}
.btn-ghost-white:hover{background:rgba(255,255,255,0.22)}

.quick-guide{background:#FFFCF7;border:1.5px solid #ecd9bf;border-radius:16px;padding:18px 22px;margin-bottom:24px}
.quick-guide h3{color:#243852;margin:0 0 10px;font-size:15px;display:flex;align-items:center;gap:8px}
.guide-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.guide-step{background:white;border:1px solid #eadcc8;border-radius:12px;padding:12px 14px;font-size:13px;line-height:1.5}
.guide-step strong{color:#A34B24;display:block;margin-bottom:4px;font-size:13px}

.roadmap-section{margin-top:28px}
.roadmap-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:14px}
.roadmap-card{background:white;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column;justify-content:space-between}
.roadmap-card .card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:10px}
.roadmap-card h4{margin:0;font-size:16px;font-weight:750;color:#1c2a3d}
.roadmap-card p{font-size:13px;color:var(--muted);line-height:1.55;margin:0 0 14px}
.pill-dev{background:#fef3c7;color:#92400e;border:1px solid #fde68a;font-size:11px;font-weight:700}
.pill-sample{background:#e0f2fe;color:#0369a1;border:1px solid #bae6fd;font-size:11px;font-weight:700}

.sample-panel{background:white;border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:20px}
.sample-analysis-card{background:#f9fbfb;border:1px solid #eadcc8;border-radius:12px;padding:16px;margin-bottom:14px}
.step-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.math-box{background:white;border:1px solid #e5d6c1;border-radius:8px;padding:10px 14px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;margin:8px 0;line-height:1.6;color:#1c2a3d}
.misconception-callout{background:#fffbeb;border-left:4px solid #f59e0b;padding:10px 14px;border-radius:6px;font-size:13px;color:#78350f;margin:8px 0;line-height:1.5}
.correct-callout{background:#f0fdf4;border-left:4px solid #10b981;padding:10px 14px;border-radius:6px;font-size:13px;color:#065f46;margin:8px 0;line-height:1.5}
.rubric-callout{background:#eff6ff;border-left:4px solid #3b82f6;padding:10px 14px;border-radius:6px;font-size:13px;color:#1e40af;margin:8px 0;line-height:1.5}

@media(max-width:760px){
  .hero{padding:22px 18px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .guide-steps{grid-template-columns:1fr}
  .roadmap-grid{grid-template-columns:1fr}
}

/* LIEU-WEB-HONESTY: draft sample layout, honest labels, mobile overflow and tap targets */
.two-col>*{min-width:0}
.topbar-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.top-sample{border-radius:20px}
.assign-select{width:auto;max-width:100%;min-height:44px;padding:6px 10px;font-size:13px;border:1px solid #bfae97;border-radius:10px;background:white}
.sample-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.sample-pills{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.sample-panel .pill,.sample-analysis-card .pill,.step-header .pill,.criterion-head .pill{white-space:normal;max-width:100%}
.criterion-row{border-top:1px solid #eee2d1;padding:10px 0}
.criterion-row:first-of-type{border-top:0}
.criterion-head{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;font-weight:650}
.math-box{overflow-wrap:anywhere}
.sample-aside{position:sticky;top:20px}
.sample-lines{display:flex;flex-direction:column;gap:10px;font-size:13px}
.sample-line{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;background:#fffbf2;padding:8px 12px;border-radius:8px;border:1px solid #f1dfb6}
.sample-line strong{font-weight:700;color:#694a06}
.intake-banner strong{overflow-wrap:anywhere}
.check-label{display:flex;align-items:center;gap:10px;min-height:44px;cursor:pointer}
.check-label input[type=checkbox]{width:24px;height:24px;flex:none}
.draft-banner{background:#fde8e8;border:2px solid #9b1c1c;color:#7f1d1d;border-radius:12px;padding:12px 16px;font-weight:700;margin:12px 0}
@media(max-width:760px){
  .topbar{flex-wrap:wrap}
  .sample-aside{position:static}
  .btn,.btn-sm,.nav button,.page-switcher .btn{min-height:44px}
  .nav button{padding:10px 6px}
  .btn{white-space:normal;text-align:center}
  .pill{white-space:normal}
  .unidentified-item>div{flex-wrap:wrap}
}

/* LIEU-P0-27: teacher work screen — original page ↔ recorded observation ↔ teacher correction/approval */
.work-tabs{display:none}
.work-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:18px;align-items:start}
.work-grid>*{min-width:0}
.work-grid>.card{margin-top:0}
.work-original{position:sticky;top:12px}
.wv-banner{background:#fde8e8;border:1.5px solid #9b1c1c;color:#7f1d1d;border-radius:10px;padding:8px 12px;font-weight:700;font-size:13px;margin-bottom:10px}
.wv-banner-file{background:#eaf4fc;border-color:#3b82f6;color:#1e3a8a}
.wv-toolbar{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.wv-group{display:flex;align-items:center;gap:6px}
.wv-group .btn{min-width:44px;min-height:44px}
.wv-page{font-size:13px;font-weight:700;min-width:80px;text-align:center}
.wv-viewport{position:relative;overflow:hidden;height:min(70vh,760px);background:#ece3d6;border:1px solid var(--line);border-radius:12px;cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.wv-viewport.is-zoomed,.wv-viewport.is-drawing{touch-action:none}
.wv-viewport.is-panning{cursor:grabbing}
.wv-viewport.is-drawing{cursor:crosshair;outline:3px dashed #2563eb;outline-offset:-3px}
.wv-viewport:focus-visible{outline:3px solid #C96A36;outline-offset:2px}
.wv-stage{position:absolute;left:0;top:0;transform-origin:0 0;will-change:transform}
.wv-stage.is-animating{transition:transform .25s ease}
.wv-stage>svg,.wv-stage>img{display:block;width:100%;height:100%;pointer-events:none}
.wv-overlay{position:absolute;inset:0}
.wv-region{position:absolute;border:2px solid #24385280;background:#C96A3612;border-radius:6px;padding:0;cursor:pointer;min-width:0;min-height:0}
.wv-region:hover{background:#14b8a622}
.wv-region:focus-visible{outline:3px solid #2563eb;outline-offset:1px}
.wv-region.is-active{border:3px solid #d97706;background:#f59e0b2e;box-shadow:0 0 0 4px #f59e0b55}
.wv-tag{position:absolute;right:4px;top:4px;background:#243852;color:#fff;font-size:11px;font-weight:700;border-radius:5px;padding:1px 6px;white-space:nowrap}
.wv-region.is-active .wv-tag{background:#b45309}
.wv-drawbox{position:absolute;border:2px dashed #2563eb;background:#3b82f620;pointer-events:none}
.wv-draw-hint{background:#eff6ff;border-left:4px solid #3b82f6;border-radius:8px;padding:8px 12px;font-size:13px;margin-bottom:8px;color:#1e3a8a}
.wv-draw-hint .btn{margin-left:6px}
.wv-pdf{width:100%;height:min(70vh,760px);border:1px solid var(--line);border-radius:12px;background:#fff}
.wv-file{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.wv-file .small-note{flex-basis:100%;margin:0}
.syn-ink{font-family:"Segoe Print","Bradley Hand","Comic Sans MS","Chalkboard SE",cursive;fill:#1e3a8a}
.syn-print{font:600 16px ui-sans-serif,system-ui,sans-serif;fill:#334155}
.syn-note{font:italic 14px ui-sans-serif,system-ui,sans-serif;fill:#6b7280}
.syn-banner{font:700 14px ui-sans-serif,system-ui,sans-serif;fill:#9b1c1c}
.work-status{font-weight:800;letter-spacing:.3px;font-size:14px;background:#fff3dc;border:1.5px solid #edd4a2;color:#694a06;border-radius:10px;padding:10px 12px}
.work-status.is-approved{background:#e3f6ee;border-color:#9fd9c1;color:#186a52}
.work-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:10px 0}
.work-facts>div{background:#fbf5ec;border:1px solid var(--line);border-radius:10px;padding:10px}
.work-facts span{display:block;font-size:12px;color:var(--muted)}
.work-facts strong{display:block;font-size:18px}
.work-facts small{font-size:11px;color:var(--muted)}
.work-tags{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:8px 0}
.tag{background:#eef2ff;color:#3730a3;border-radius:99px;padding:3px 9px;font-size:12px;font-weight:650}
.work-obs{background:#fbf5ec;border-radius:10px;padding:10px 12px;font-size:13px;margin:10px 0 4px}
.claims-q{margin:18px 0 6px;font-size:14px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}
.claim{border:1px solid var(--line);border-left:4px solid #d9cbb6;border-radius:10px;padding:10px 12px;margin:8px 0;background:#fff;scroll-margin:80px}
.claim.is-resolved{border-left-color:#475569}
.claim.is-active{border-color:#d97706;border-left-color:#d97706;box-shadow:0 0 0 3px #f59e0b40}
.claim:focus-visible{outline:3px solid #C96A36}
.claim-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;flex-wrap:wrap}
.claim-title{border:0;background:none;padding:6px 0;min-height:44px;font-weight:750;font-size:14px;color:var(--accent-dark);text-align:left;cursor:pointer}
.claim-title:hover{text-decoration:underline}
.claim-title[aria-disabled=true]{color:var(--ink)}
.claim-max{font-size:12px;color:var(--muted);padding-top:10px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:2px 0 6px}
.chip{font-size:12px;font-weight:700;border-radius:99px;padding:3px 9px;border:1px solid transparent;max-width:100%;overflow-wrap:anywhere}
/* Statuses are informational, not verdicts: blue = step seen, slate = step not seen, dashed grey = undetermined; red only for teacher-set "Sai". */
.st-observed{background:#e8efff;color:#1e3a8a;border-color:#bfd0fb}
.st-not_observed{background:#f1f5f9;color:#334155;border-color:#94a3b8}
.st-unknown{background:#fff;color:#4b5563;border:1px dashed #9ca3af}
.st-incorrect{background:#fde8e8;color:#9b1c1c;border-color:#dc2626}
.reg{background:#fff;color:#334155;border-color:#d9cbb6;font-weight:650}
.reg-hw{border-color:#2563eb;color:#1e3a8a}
.reg-unknown{border-style:dashed}
.claim-inferred{font-size:12px;font-weight:700;color:#5b21b6;background:#f5f3ff;border-radius:6px;padding:3px 8px;display:inline-block;margin:2px 0}
.claim-static{border:1px dashed #d9cbb6;border-radius:8px;padding:8px 10px;margin:6px 0}
.claim-confirm{background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:8px 10px;margin:4px 0 6px;display:grid;gap:6px}
.claim-confirm input{min-height:44px}
.claim-confirm .small-note{margin:0}
.claim-unmapped{border-left-color:#a5b4fc;background:#fafaff}
.case-sub{font-size:14px;font-weight:600;color:var(--muted);letter-spacing:0}
.syn-label{font:600 14px ui-sans-serif,system-ui,sans-serif;fill:#3730a3}
.prov{background:#fff;border-color:#d9cbb6;color:#334155}
.prov-written{border-color:#2563eb;color:#1e3a8a}
.prov-checked{border-color:#475569;color:#1e293b}
.prov-approved{background:#334155;color:#fff}
.act{background:#f1f5f9;color:#0f172a}
.claim-basis,.claim-note{font-size:13px;margin:4px 0}
.claim-region{margin:2px 0 6px}
.claim-actions{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.claim-actions .btn[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}
.claim-edit{background:#fbf5ec;border:1px solid var(--line);border-radius:10px;padding:10px;margin:6px 0;display:grid;gap:8px}
.claim-edit textarea,.work-footer textarea{width:100%;border:1px solid #bfae97;border-radius:10px;padding:8px 10px;font:inherit;font-size:14px}
.claim-points{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:4px}
.claim-points label{margin:0;font-weight:600;font-size:12px}
.claim-points input{width:120px;min-height:44px}
.claim-points input[aria-invalid=true]{border-color:var(--danger)}
.claim-live{margin:2px 0 0;color:var(--accent-dark)}
.claim-live:empty{display:none}
.mcq-table{min-width:0!important;font-size:13px}
.mcq-table td,.mcq-table th{padding:6px 8px}
.work-footer{border-top:1px solid var(--line);margin-top:16px;padding-top:14px}
.work-footer .small-note{margin-top:8px}
@media(max-width:760px){
  .work-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;position:sticky;top:0;z-index:3;background:var(--bg);padding:6px 0;margin-bottom:8px}
  .work-tabs [role=tab]{min-height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;font-weight:700}
  .work-tabs [role=tab][aria-selected=true]{background:var(--accent);border-color:var(--accent);color:#fff}
  .work-grid{grid-template-columns:1fr}
  .work-grid[data-pane=original] .work-analysis,.work-grid[data-pane=analysis] .work-original{display:none}
  .work-original{position:static}
  .wv-viewport,.wv-pdf{height:62vh}
  .work-facts{grid-template-columns:1fr}
  .wv-tag{font-size:10px}
  .claim-actions .btn{flex:1 1 30%}
  /* On phones the toast sits over the top bar, never over form fields; app.js also dismisses it on scroll or focus. */
  .toast{top:6px;bottom:auto;left:8px;right:8px;max-width:none;font-size:13px;padding:9px 12px;pointer-events:none;z-index:6}
}

/* LIEU-AI-WEB: teacher screen "Phân tích bằng AI" (ai.js). Everything here is prefixed .ai- and only used by that screen. */
.ai-entry-off{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}
.ai-steps{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 16px}
.ai-steps li{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:99px;padding:6px 14px 6px 6px;font-size:13px;font-weight:650;color:var(--muted)}
.ai-steps li .ai-step-n{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#eaf0ee;color:var(--muted);font-size:12px;flex:none}
.ai-steps li.is-current{border-color:var(--accent);color:var(--accent-dark)}
.ai-steps li.is-current .ai-step-n{background:var(--accent);color:#fff}
.ai-steps li.is-done .ai-step-n{background:#f3dcc9;color:var(--accent-dark)}
.ai-upload{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:18px;align-items:start;margin-bottom:16px}
.ai-upload>.card{margin-top:0}
.ai-num{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:15px;margin-right:6px;vertical-align:2px}
.ai-file{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.ai-preview{margin:6px 0 12px}
.ai-preview-img{display:block;max-width:100%;max-height:360px;margin:8px 0;border:1px solid var(--line);border-radius:10px;background:#fff;object-fit:contain}
.ai-pdf{width:100%;height:360px;border:1px solid var(--line);border-radius:10px;background:#fff}
.ai-field{margin:12px 0}
.ai-classes{border:1px solid var(--line);border-radius:12px;padding:6px 12px}
.ai-classes legend{font-size:13px;font-weight:700;padding:0 4px}
.ai-classes .check-label input[type=radio]{width:22px;height:22px;flex:none}
.ai-notice{margin-bottom:0}
.ai-off,.ai-off-box{background:#f1f5f9;border:1px solid #cbd5e1;color:#334155;border-radius:10px;padding:10px 12px;font-weight:700}
.ai-off-box p{font-weight:400;margin:4px 0 0}
.ai-go{min-height:48px;width:100%;font-size:16px}
.ai-busy{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:10px 12px}
.ai-busy>div{flex:1;min-width:140px}
.ai-spin{width:22px;height:22px;border-radius:50%;border:3px solid #bfdbfe;border-top-color:#2563eb;animation:ai-spin 1s linear infinite;flex:none}
@keyframes ai-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.ai-spin{animation:none}}
#ai-outcome{margin-top:12px}
#ai-outcome:focus{outline:none}
.ai-list-rows{list-style:none;margin:0;padding:0}
.ai-list-rows li{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding:10px 0}
.ai-list-rows li:first-child{border-top:0}
.ai-review{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}
.ai-review>*{min-width:0}
.ai-review>.card{margin-top:0}
.ai-pagecard{position:sticky;top:12px}
.ai-panel-h{font-size:18px}
.ai-vtools{display:flex;gap:6px;justify-content:flex-end;margin-bottom:8px}
.ai-vtools .btn{min-width:44px;min-height:44px}
.ai-vt-icon{display:none}
@media(max-width:760px){.ai-vt-icon{display:inline}}
.ai-viewport{position:relative;overflow:hidden;height:min(74vh,780px);background:#ece3d6;border:1px solid var(--line);border-radius:12px;cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.ai-viewport.is-zoomed{touch-action:none}
.ai-viewport.is-panning{cursor:grabbing}
.ai-viewport:focus-visible{outline:3px solid #C96A36;outline-offset:2px}
.ai-stage{position:absolute;left:0;top:0;transform-origin:0 0;will-change:transform}
.ai-stage.is-animating{transition:transform .25s ease}
.ai-stage>img{display:block;width:100%;height:100%;pointer-events:none}
.ai-overlay{position:absolute;inset:0}
.ai-region{position:absolute;border:2px solid #2563eb99;background:#3b82f614;border-radius:4px;padding:0;cursor:pointer;min-width:0;min-height:0}
.ai-region:hover{background:#3b82f62a}
.ai-region:focus-visible{outline:3px solid #1d4ed8;outline-offset:1px}
.ai-region.is-printed{border-color:#94a3b8aa;border-style:dashed;background:transparent}
.ai-region.is-suspect{border-color:#d97706;border-style:dashed}
.ai-region.is-unreadable{border-color:#6b7280;background:repeating-linear-gradient(45deg,#6b72801a 0 6px,transparent 6px 12px)}
.ai-region.is-active{border:3px solid #b45309;background:#f59e0b2e;box-shadow:0 0 0 4px #f59e0b55}
.ai-rtag{position:absolute;left:-2px;top:-2px;transform:translateY(-100%);background:#1d4ed8;color:#fff;font-size:11px;font-weight:700;border-radius:4px 4px 0 0;padding:0 5px;line-height:16px}
.ai-region.is-active .ai-rtag{background:#b45309}
.ai-span{position:absolute;border:1px dashed #6b7280;pointer-events:none}
.ai-noimg{border:1.5px dashed #c2ab8c;border-radius:12px;padding:16px;background:#fbf5ec}
.ai-warn{color:#694a06;background:var(--warn);border-radius:8px;padding:6px 10px}
.ai-legend{background:#fbf5ec;border-radius:10px;padding:10px 12px}
.ai-row,.ai-finding{scroll-margin:80px}
.ai-sugg-box{background:#faf8ff;border:1px solid #e4defa;border-radius:8px;padding:8px 10px;margin:6px 0}
.ai-sugg-line{margin:0 0 4px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.ai-sugg-box .claim-basis,.ai-sugg-box .small-note{margin:2px 0}
.ai-prov{background:#f5f3ff;color:#5b21b6;border-color:#ddd6fe}
.ai-kind-sus{background:#fff7ed;color:#9a3412;border-color:#fdba74;border-style:dashed}
.ai-kind-ok{background:#ecfdf5;color:#065f46;border-color:#a7f3d0}
.ai-kind-info{background:#f1f5f9;color:#334155;border-color:#cbd5e1}
.ai-pts{color:#5b21b6}
.ai-lines{display:inline-flex;flex-wrap:wrap;gap:4px;vertical-align:middle}
.ai-linebtn{border:1px solid #bfdbfe;background:#eff6ff;color:#1e3a8a;border-radius:6px;font-size:12px;font-weight:700;padding:2px 8px;min-height:28px;cursor:pointer}
.ai-linebtn[aria-disabled=true]{opacity:.6;cursor:default}
.ai-rem{color:#065f46}
.ai-trans{margin:14px 0;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.ai-trans summary{cursor:pointer;font-weight:700;min-height:36px;display:flex;align-items:center}
.ai-trans-list{padding-left:18px;margin:6px 0;font-size:14px;overflow-wrap:anywhere}
.ai-trans-list li{margin:4px 0}
.ai-scoring{border-top:1px solid var(--line);margin-top:16px;padding-top:6px}
.ai-sugg-total{font-weight:700;color:#5b21b6;background:#faf8ff;border:1px dashed #c4b5fd;border-radius:10px;padding:8px 12px;margin:6px 0}
.ai-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:10px 0}
.ai-points .field input{min-height:44px;padding:10px 12px;border:1px solid #bfae97;border-radius:10px;width:100%;font-size:16px}
.ai-points .field input[aria-invalid=true]{border-color:var(--danger);outline:2px solid #fca5a5}
.ai-points small{display:block;font-size:12px;margin-top:4px;overflow-wrap:anywhere}
.ai-pt-msg{color:var(--danger);margin:4px 0 0}
.ai-pt-msg:empty{display:none}
.ai-teacher-total{font-size:14px}
.ai-scoring textarea{width:100%;border:1px solid #bfae97;border-radius:10px;padding:8px 10px;font:inherit;font-size:14px}
.ai-fb{background:#faf8ff;border-radius:10px;padding:8px 10px;margin:6px 0 10px}
.ai-fb .small-note{margin:0 0 6px;overflow-wrap:anywhere}
.ai-attest{font-weight:700}
.ai-bar{position:sticky;bottom:0;z-index:3;background:#fff;border-top:1px solid var(--line);margin:12px -22px -22px;padding:10px 22px;border-radius:0 0 16px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;box-shadow:0 -6px 16px #24453b14}
.ai-bar-state{flex:1 1 220px;font-size:13px;min-width:0;overflow-wrap:anywhere}
.ai-bar-state.is-approved{color:#186a52;font-weight:700}
.ai-approve{min-height:48px;min-width:140px;font-size:16px}
.ai-root .claim-title{overflow-wrap:anywhere}
.ai-root .chip{white-space:normal}
@media(max-width:760px){
 .ai-upload{grid-template-columns:1fr}
 .ai-review{display:block}
 .ai-pagecard{position:sticky;top:0;z-index:5;height:36vh;min-height:180px;padding:6px;margin-bottom:10px;display:flex;flex-direction:column;border-radius:0 0 14px 14px}
 #ai-viewer{display:flex;flex-direction:column;flex:1;min-height:0}
 .ai-vtools{position:absolute;right:10px;top:10px;z-index:2;margin:0;gap:4px;flex-direction:column}
 .ai-vtools .btn{min-height:44px;min-width:44px;width:44px;padding:0;background:#ffffffe6}
 .ai-vt-label{display:none}
 .ai-viewport{flex:1;height:auto;min-height:0}
 .ai-noimg{padding:8px;font-size:13px;overflow:auto}
 .ai-row,.ai-finding{scroll-margin-top:calc(36vh + 16px);scroll-margin-bottom:96px}
 .ai-points{grid-template-columns:1fr}
 .ai-bar{margin:12px -17px -17px;padding:6px 12px 8px;border-radius:0;gap:6px}
 .ai-bar-state{font-size:12px;line-height:1.35;flex-basis:100%}
 .ai-approve{flex:1 1 100%}
 .ai-steps li{font-size:12px;padding-right:10px}
}
/* Narrow phones: compact header, one row of step chips (only the current step keeps its label visible; the others stay
   readable by screen readers), smaller secondary button, so the page viewer starts inside the first screen on step 3. */
@media(max-width:480px){
 .ai-steps{flex-wrap:nowrap;gap:6px;margin-bottom:10px}
 .ai-steps li{padding:3px 10px 3px 3px;gap:6px;white-space:nowrap;min-width:0}
 .ai-steps li .ai-step-n{width:22px;height:22px}
 .ai-steps li:not(.is-current){padding-right:3px}
 .ai-steps li:not(.is-current) .ai-step-t{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
 .ai-head{flex-direction:row;align-items:flex-start;gap:8px;margin-bottom:10px}
 .ai-head .eyebrow{font-size:11px;margin-bottom:2px}
 .ai-head h1{font-size:22px;margin:0 0 4px}
 .ai-head .sub{font-size:12px;margin:0;line-height:1.4}
 .ai-head .sub .chip{font-size:11px;padding:1px 7px}
 .ai-head .actions{width:auto;flex:none}
 .ai-head>div:first-child{flex:1;min-width:0}
 .ai-head .actions .btn{flex:none;min-height:44px;padding:6px 10px;font-size:13px}
 .ai-steps li{position:relative}
}
/* v1.4 (#27 teacher decision): guide before trial, mode badge, comprehensive AI comment, provisional points, one-pass confirm. */
.ai-mode{border-radius:10px;padding:8px 12px;margin:0 0 12px;font-size:14px;border:1px solid #cbd5e1;background:#f1f5f9;color:#334155;overflow-wrap:anywhere}
.ai-mode-dry_run{background:#fff7ed;border-color:#fdba74;color:#7c2d12}
.ai-mode-live{background:#eef2ff;border-color:#c7d2fe;color:#312e81}
.ai-guide{max-width:720px;margin:0 0 16px}
.ai-guide h2:focus{outline:none}
.ai-guide-dots{list-style:none;display:flex;gap:6px;padding:0;margin:4px 0 14px}
.ai-guide-dots li{width:28px;height:6px;border-radius:6px;background:#e5d6c1}
.ai-guide-dots li.is-current{background:var(--accent)}
.ai-guide-dots li.is-done{background:#e0a983}
.ai-guide-again{margin:-4px 0 8px}
#ai-s1:focus{outline:none}
.ai-overview{background:#faf8ff;border:1px solid #e4defa;border-radius:12px;padding:10px 12px;margin:4px 0 12px}
.ai-ov-title{font-size:15px;margin:0 0 6px}
.ai-ov-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 16px}
.ai-ov-grid>div{min-width:0;overflow-wrap:anywhere}
.ai-ov-grid h4{font-size:13px;margin:8px 0 2px}
.ai-ov-grid ul,.ai-ov-grid ol{margin:0;padding-left:18px;font-size:13px}
.ai-ov-grid li{margin:2px 0}
.ai-ov-grid>div:first-child{grid-column:1/-1}
.ai-pts{margin:4px 0 2px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.ai-pts-label{background:#fefce8;color:#713f12;border-color:#fde68a;font-weight:650}
.ai-cp-points{margin:6px 0 0}
.ai-cp-points input[data-src=ai]{border-style:dashed;border-color:#a78bfa;background:#faf8ff}
.ai-points .field input[data-src=derived]{border-style:dashed;border-color:#a78bfa;background:#faf8ff}
.ai-cp-pt-note{margin:2px 0 4px}
.ai-q-state:empty,.ai-pt-msg:empty{display:none}
.ai-confirm{flex:1 1 100%;min-width:0;overflow-wrap:anywhere}
.ai-confirm p{margin:0 0 6px}
.ai-confirm-list{margin:0 0 6px;padding-left:18px;font-size:14px}
.ai-confirm .btn{min-height:48px}
.ai-fb-list,.ai-report-scores{margin:8px 0;padding-left:18px;font-size:13px;overflow-wrap:anywhere}
@media(max-width:760px){.ai-ov-grid{grid-template-columns:1fr}.ai-confirm .actions .btn{flex:1 1 100%}}
@media(max-width:480px){.ai-head .ai-when{display:none}}
/* MathMentor brand mark + guide list */
.brand{display:flex;align-items:center;gap:10px}.brand-mark{flex:none;display:block}.brand-text{display:block}
ol.guide-steps{list-style:none;margin:0;padding:0}.guide-cta{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px}
/* ===== MathMentor design v2 (#43 approved reference): app shell, home, upload, 3-zone workstation ===== */
:root{font-family:'Be Vietnam Pro',ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;--mm-side-w:248px;--mm-radius:16px;--mm-shadow:0 1px 2px #2438520d,0 8px 24px #24385212;--mm-soft:#FBF3E8;--mm-orange-tint:#F8E6D8}
body{background:var(--mm-cream)}
h1,h2,h3,h4{color:var(--mm-navy);letter-spacing:-.3px}
h1{font-weight:700;letter-spacing:-.6px}
.card{border-radius:var(--mm-radius);box-shadow:var(--mm-shadow);border-color:#eadcc8}
.btn{border-radius:12px;font-weight:600}
.btn-primary{background:var(--mm-orange-accessible);border-color:var(--mm-orange-accessible)}
.mm-i{flex:none;display:block}
/* shell */
.mm-shell{display:flex;min-height:100vh}
.mm-side{position:sticky;top:0;align-self:flex-start;height:100vh;width:var(--mm-side-w);flex:none;background:var(--mm-ivory);border-right:1px solid #eadcc8;display:flex;flex-direction:column;padding:20px 14px 16px;overflow-y:auto;z-index:20}
.mm-side-brand{display:flex;align-items:center;gap:10px;padding:4px 8px 18px;cursor:pointer;border-radius:12px}
.mm-side-brand:focus-visible{outline:3px solid var(--mm-brand-orange);outline-offset:2px}
.mm-wordmark{display:flex;flex-direction:column;line-height:1.1}
.mm-wm{font-weight:700;font-size:21px;letter-spacing:-.4px;color:var(--mm-navy)}
.mm-wm-o{color:var(--mm-brand-orange)}
.mm-wordmark small{font-size:12px;color:var(--muted);font-weight:500;margin-top:3px}
.mm-nav-wrap{flex:1}
.mm-nav{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.mm-nav-item{display:flex;align-items:center;gap:12px;width:100%;min-height:44px;padding:10px 12px;border:0;border-radius:12px;background:transparent;color:#3a4658;font:inherit;font-size:14px;font-weight:500;text-align:left}
button.mm-nav-item:hover{background:var(--mm-soft);color:var(--mm-navy)}
.mm-nav-item[aria-current=page]{background:var(--mm-orange-tint);color:var(--mm-orange-accessible);font-weight:600}
.mm-nav-item.is-soon{color:#80858f;cursor:default;flex-wrap:wrap;row-gap:2px}
.mm-nav-item.is-soon span{flex:1}
.mm-soon{font-style:normal;font-size:10.5px;font-weight:600;color:#7e3819;background:#fdf0e3;border:1px solid #f1d7bd;border-radius:99px;padding:1px 7px;white-space:nowrap}
.mm-side-foot{border-top:1px solid #eadcc8;padding-top:10px;margin-top:10px}
.mm-side-note{font-size:11.5px;color:var(--muted);margin:10px 12px 0;line-height:1.5}
.mm-main{flex:1;min-width:0;display:flex;flex-direction:column}
.mm-top{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding:14px 32px;background:transparent}
.mm-menu,.mm-top-brand{display:none}
.mm-top-right{display:flex;align-items:center;gap:10px}
.mm-pill{font-size:12px;font-weight:600;color:var(--mm-navy);background:var(--mm-ivory);border:1px solid #eadcc8;border-radius:99px;padding:5px 12px}
.mm-user{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--mm-navy);background:var(--mm-ivory);border:1px solid #eadcc8;border-radius:99px;padding:4px 12px 4px 5px}
.mm-user .mm-i{width:26px;height:26px;padding:4px;border-radius:50%;background:var(--mm-orange-tint);color:var(--mm-orange-accessible)}
.mm-scrim{display:none}
.mm-main .page{max-width:1240px;width:100%;margin:0 auto;padding:6px 32px 56px}
@media(max-width:1023px){
 .mm-side{position:fixed;left:0;top:0;bottom:0;height:100%;transform:translateX(-105%);visibility:hidden;transition:transform .2s ease,visibility .2s;box-shadow:0 0 40px #24385240}
 .mm-shell.mm-open .mm-side{transform:none;visibility:visible}
 .mm-shell.mm-open .mm-scrim{display:block;position:fixed;inset:0;background:#1c2a3d66;border:0;z-index:15}
 .mm-top{justify-content:space-between;padding:10px 16px;background:var(--mm-ivory);border-bottom:1px solid #eadcc8}
 .mm-menu{display:inline-grid;place-items:center;width:44px;height:44px;border:1px solid #eadcc8;border-radius:12px;background:#fff;color:var(--mm-navy)}
 .mm-top-brand{display:flex;align-items:center;gap:8px;flex:1;min-width:0;cursor:pointer}
 .mm-top-brand .mm-wm{font-size:18px}
 .mm-main .page{padding:16px 16px 48px}
}
@media(prefers-reduced-motion:reduce){.mm-side{transition:none}}
@media(max-width:560px){.mm-user>span,.mm-pill{display:none}.mm-user{padding:4px}}
/* home hero: light brand card, as in the reference */
.hero.mm-hero{background:var(--mm-ivory);color:var(--ink);border:1px solid #eadcc8;box-shadow:var(--mm-shadow);padding:28px}
.mm-hero-top{display:flex;gap:24px;align-items:center}
.mm-hero-top .mm-logo{flex:none;border-radius:24px;box-shadow:0 10px 24px #b85a2b33}
.mm-hero .hero-badge{background:var(--mm-soft);border-color:#ecd9bf;color:#7e3819}
.mm-hero .hero-brand{color:var(--muted);margin:0 0 4px}
.mm-hero .mm-hero-wm{display:block;font-size:clamp(34px,4.6vw,52px);font-weight:700;letter-spacing:-1.2px;line-height:1.05;margin:4px 0 6px;color:var(--mm-navy)}
.mm-hero h1{color:var(--mm-navy);font-size:clamp(20px,2.4vw,26px);margin:0 0 8px;font-weight:600;letter-spacing:-.3px}
.mm-hero .hero-desc{color:#3a4658;margin:0 0 18px}
.mm-features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px;padding-top:20px;border-top:1px solid #eadcc8}
.mm-feature{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:#3a4658;line-height:1.45}
.mm-feature strong{display:block;color:var(--mm-navy);font-size:14.5px;margin-bottom:2px}
.mm-feature .mm-i{width:44px;height:44px;padding:10px;border-radius:50%;background:var(--mm-orange-tint);color:var(--mm-orange-accessible)}
@media(max-width:760px){.mm-hero-top{flex-direction:column;align-items:flex-start;gap:14px}.mm-hero-top .mm-logo{width:64px;height:64px;border-radius:18px}.mm-features{grid-template-columns:1fr}.hero.mm-hero{padding:20px 18px}}
.quick-guide{box-shadow:var(--mm-shadow)}
.guide-step{border-radius:14px}
/* steps 1-2-3 header */
.ai-steps{align-items:center;background:var(--mm-ivory);border:1px solid #eadcc8;border-radius:14px;padding:6px 8px;width:fit-content;max-width:100%}
.ai-steps li{background:transparent;border:0}
/* upload screen */
.mm-upload{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.85fr);gap:20px;align-items:start;margin-bottom:18px}
.mm-upload>.card{margin:0}
.mm-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;min-height:200px;padding:24px 16px;border:2px dashed #d9c3a6;border-radius:16px;background:var(--mm-soft);color:var(--mm-navy);cursor:pointer;transition:border-color .15s,background .15s}
.mm-drop:hover,.mm-drop.is-over{border-color:var(--mm-brand-orange);background:#fbeee0}
.mm-drop:focus-within{outline:3px solid var(--mm-brand-orange);outline-offset:2px}
.mm-drop .mm-i{width:52px;height:52px;padding:12px;border-radius:14px;background:#fff;color:var(--mm-orange-accessible);box-shadow:var(--mm-shadow)}
.mm-drop strong{font-size:15px}
.mm-drop small{color:var(--muted);font-size:12.5px}
.mm-samples{margin-top:18px}
.mm-samples h3{font-size:14px;margin:0 0 4px}
.mm-sample-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:10px}
.mm-sample{display:flex;flex-direction:column;gap:6px;padding:6px;border:1px solid #eadcc8;border-radius:12px;background:#fff;text-align:left;font:inherit;color:var(--mm-navy);min-height:44px;min-width:0}
.mm-sample:hover{border-color:var(--mm-brand-orange)}
.mm-sample[aria-pressed=true]{border-color:var(--mm-orange-accessible);box-shadow:0 0 0 2px #a34b2440}
.mm-sample img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:top;border-radius:8px;border:1px solid #eee3d3;background:#faf8f3}
.mm-sample span{font-size:12.5px;font-weight:600;padding:0 2px 2px;line-height:1.3}
.mm-sample small{display:block;font-weight:400;color:var(--muted);font-size:11.5px}
@media(max-width:1100px){.mm-upload{grid-template-columns:1fr}}
@media(max-width:480px){.mm-sample-grid{gap:8px}.mm-sample span small{display:none}.mm-drop{min-height:150px}}
/* review workstation: page | analysis | score (desktop), stacked on narrower screens */
.mm-ws{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(300px,.8fr);gap:16px;align-items:start}
.mm-ws>.card{margin:0;min-width:0}
.mm-ws-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 8px}
.mm-ws-head h2{margin:0;font-size:16px}
.mm-ws .mm-ws-score{position:sticky;top:12px}
.mm-jump{display:flex;gap:2px;flex-wrap:wrap;border-bottom:1px solid #eadcc8;margin:6px 0 14px}
.mm-jump a{font-size:12.5px;font-weight:600;color:var(--muted);text-decoration:none;padding:8px 9px;border-bottom:2px solid transparent;margin-bottom:-1px;min-height:36px;display:inline-flex;align-items:center}
.mm-jump a:hover,.mm-jump a:focus-visible{color:var(--mm-orange-accessible);border-bottom-color:var(--mm-orange-accessible)}
.mm-score-tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0 14px}
.mm-score-tile{border-radius:14px;padding:12px;min-width:0}
.mm-score-tile.is-ai{background:var(--mm-soft);border:1px solid #f1d7bd}
.mm-score-tile.is-teacher{background:#fff;border:1.5px solid var(--mm-navy)}
.mm-score-tile>span{display:block;font-size:12px;font-weight:600;color:#3a4658}
.mm-score-tile strong{display:block;font-size:22px;line-height:1.25;margin:4px 0 2px;color:var(--mm-orange-accessible);overflow-wrap:anywhere}
.mm-score-tile.is-teacher strong{color:var(--mm-navy)}
.mm-score-tile strong.is-text{font-size:15px}
.mm-score-tile small{display:block;font-size:11.5px;color:var(--muted);line-height:1.35}
.mm-ws-score .ai-bar{position:static;margin:14px 0 0;padding:12px 0 0;border-radius:0;background:transparent;flex-wrap:wrap}
.mm-ws-score .ai-approve{width:100%}
@media(min-width:1280px){
 .ai-review.mm-ws{height:calc(100vh - 200px);min-height:600px}
 .ai-review.mm-ws>.card{max-height:100%;overflow:auto;position:static}
 .ai-review.mm-ws .ai-pagecard{display:flex;flex-direction:column}
 .ai-review.mm-ws #ai-viewer{flex:1;display:flex;flex-direction:column;min-height:0}
 .ai-review.mm-ws .ai-viewport{flex:1;height:auto;min-height:320px}
}
@media(min-width:761px) and (max-width:1279px){
 .mm-ws{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}
 .mm-ws .mm-ws-score{grid-column:2;position:static}
 .mm-ws>.mm-ws-page{grid-row:span 2}
}
@media(max-width:760px){
 .ai-review.mm-ws{display:block}
 .ai-review.mm-ws>.card{margin-bottom:12px}
 .mm-ws .mm-ws-score{position:static}
 .ai-review .mm-ws-score .ai-bar{position:sticky;bottom:0;background:#fff;margin:12px -17px -17px;padding:6px 12px 8px;border-top:1px solid var(--line);border-radius:0 0 16px 16px}
 .mm-score-tile strong{font-size:18px}
}
/* synthetic case workstation (work.js) */
@media(max-width:760px){.work-grid.mm-ws{grid-template-columns:1fr}.work-grid[data-pane=original] .work-score{display:none}}
/* v2 workstation grid areas: the approve bar is its own cell so it stays reachable on every layout */
.mm-jump-btn{font:inherit;font-size:12.5px;font-weight:600;color:var(--muted);background:none;border:0;border-bottom:2px solid transparent;padding:8px 9px;margin-bottom:-1px;min-height:36px;cursor:pointer}
.mm-jump-btn:hover,.mm-jump-btn:focus-visible{color:var(--mm-orange-accessible);border-bottom-color:var(--mm-orange-accessible)}
.ai-review.mm-ws>.ai-bar{margin:0;border:1px solid #eadcc8;border-radius:14px;box-shadow:var(--mm-shadow);background:#fff;padding:12px 14px;position:static;flex-wrap:wrap}
.ai-review.mm-ws>.ai-bar .ai-approve{width:100%}
.ai-review.mm-ws>.mm-ws-page{grid-area:page}
.ai-review.mm-ws>.mm-ws-analysis{grid-area:analysis}
.ai-review.mm-ws>.mm-ws-score{grid-area:score}
.ai-review.mm-ws>.mm-ws-bar{grid-area:bar}
.ai-review.mm-ws{grid-template-areas:"page analysis score" "page analysis bar";grid-template-rows:auto 1fr}
.work-grid.mm-ws>.mm-ws-page{grid-area:page}
.work-grid.mm-ws>.mm-ws-analysis{grid-area:analysis}
.work-grid.mm-ws>.mm-ws-score{grid-area:score;position:sticky;top:12px}
.work-grid.mm-ws{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(300px,.8fr);grid-template-areas:"page analysis score"}
.work-grid.mm-ws>.mm-ws-page{position:sticky;top:12px}
@media(min-width:1280px){
 .ai-review.mm-ws{grid-template-rows:minmax(0,1fr) auto}
}
@media(min-width:761px) and (max-width:1279px){
 .ai-review.mm-ws{grid-template-areas:"page analysis" "page score" "page bar";grid-template-rows:auto auto 1fr}
 .ai-review.mm-ws>.mm-ws-page{align-self:start;position:sticky;top:12px}
 .work-grid.mm-ws{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);grid-template-areas:"page analysis" "page score"}
 .work-grid.mm-ws>.mm-ws-score{position:static}
}
@media(max-width:760px){
 .ai-review.mm-ws>.ai-bar{position:sticky;bottom:0;z-index:4;border-radius:14px 14px 0 0;padding:6px 12px 8px;margin-top:4px}
 .ai-review .ai-pagecard .mm-ws-head{display:none}
 .work-grid.mm-ws{display:grid;grid-template-columns:1fr;grid-template-areas:"page" "analysis" "score"}
 .work-grid.mm-ws>.mm-ws-page,.work-grid.mm-ws>.mm-ws-score{position:static}
 .work-grid[data-pane=analysis] .work-original{display:none}
}
/* v2 polish */
:root{--mm-side-w:264px}
.mm-zone-label{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.mm-ws-head h2{white-space:nowrap}
@media(min-width:1024px){.mm-shell{background:linear-gradient(to right,var(--mm-ivory) calc(var(--mm-side-w) - 1px),#eadcc8 calc(var(--mm-side-w) - 1px),#eadcc8 var(--mm-side-w),transparent var(--mm-side-w))}}
.mm-tagline{margin:0 0 4px;color:var(--muted);font-size:14px}
.work-score .work-facts{grid-template-columns:1fr}
.work-score .work-status{font-size:13px}
/* v2 workstation polish */
.mm-jump{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin}
.mm-jump-btn{white-space:nowrap;flex:none}
.mm-ws-score .ai-points{grid-template-columns:1fr;gap:10px}
.mm-ws-score .ai-points .field label{font-size:13px}
@media(min-width:1280px){
 .ai-review.mm-ws{height:calc(100vh - 120px);min-height:620px}
 .ai-review.mm-ws>.card{align-self:stretch}
 .ai-review.mm-ws>.ai-bar{align-self:end}
}
.ai-review-root .section-head{margin-bottom:12px}
.mm-upload .ai-preview-img{max-height:340px;width:auto;max-width:100%;display:block;margin:12px auto 0;border-radius:10px;border:1px solid #eadcc8}
.mm-drop>span{font-size:13.5px;color:#3a4658}
.ai-review.mm-ws>.ai-bar{z-index:6}
/* v2.1 UX polish: mobile tap targets >=44px, teach-back card, and unresolved jump actions */
.tb-card{margin:10px 0 6px;border:1px solid #eadcc8;border-radius:12px;background:var(--mm-soft);padding:8px 12px;font-size:13px}
.tb-summary{font-weight:600;color:var(--mm-navy);cursor:pointer;line-height:1.4}
.tb-body{margin-top:6px}
.tb-list{margin:0 0 8px;padding-left:18px;line-height:1.45}
.tb-list li{margin:4px 0}
.ai-jump-open{margin-left:4px;vertical-align:middle}
@media(max-width:760px){
 .ai-linebtn{min-height:44px;padding:6px 12px;display:inline-flex;align-items:center}
 .mm-jump-btn{min-height:44px;padding:8px 12px;display:inline-flex;align-items:center}
}

/* Blueprint v1.0: Teacher Copilot Chat, Smart Review Filter, Focus Mode, Dependency Notice & 4-Part Feedback */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.is-filtered-out{display:none!important}
.ai-review.mm-ws.is-focus-mode{grid-template-columns:minmax(0,1.35fr) minmax(300px,.85fr);grid-template-areas:"analysis score" "analysis bar"}
.ai-review.mm-ws.is-focus-mode>.mm-ws-page{display:none}
@media(max-width:760px){.ai-review.mm-ws.is-focus-mode{display:block}}
.mm-ws-tools{margin:10px 0 12px;padding:10px 12px;border:1px solid #eadcc8;border-radius:12px;background:var(--mm-ivory)}
.mm-ws-tool-btns{display:flex;flex-wrap:wrap;gap:8px}
.ai-copilot{margin-top:10px;padding-top:10px;border-top:1px solid #eadcc8}
.ai-copilot-title{margin:0 0 4px;font-size:14px;color:var(--mm-navy)}
.ai-copilot-prompts{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.ai-copilot-form{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.ai-copilot-form input{flex:1 1 180px;min-width:0;padding:8px 10px;border:1px solid #d9c3a6;border-radius:8px;font:inherit;font-size:13px}
.ai-copilot-log{margin-top:8px;display:flex;flex-direction:column;gap:8px;max-height:280px;overflow-y:auto}
.ai-chat-turn{padding:8px 10px;border:1px solid #eadcc8;border-radius:10px;background:#fff;font-size:13px}
.ai-chat-q{margin:0 0 4px;color:var(--mm-navy)}
.ai-chat-a p{margin:0 0 6px;line-height:1.45}
.ai-chat-pre{white-space:pre-wrap;word-break:break-word;font-family:inherit;font-size:12.5px;margin:4px 0 6px;padding:8px;background:var(--mm-soft);border-radius:8px;border:1px solid #eadcc8}
.ai-chat-actions,.ai-fb-btns{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.ai-dep-notice{margin:6px 0;padding:6px 10px;border-left:3px solid var(--mm-brand-orange);background:var(--mm-soft);border-radius:6px;color:var(--mm-navy);font-weight:500}
.ai-math-code{display:inline-block;margin:0 4px;padding:1px 6px;border-radius:6px;background:var(--mm-soft);border:1px solid #eadcc8;font-size:12px;color:var(--mm-navy)}
.ai-precheck{margin-top:4px;color:var(--mm-navy);font-weight:500}
.ai-scenario-drawer,.ai-pedagogical-bank{margin-top:10px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 10px;background:var(--bg-soft);font-size:13px}
.ai-scenario-drawer summary,.ai-pedagogical-bank summary{cursor:pointer;font-weight:600;color:var(--mm-navy)}
.ai-scenario-grid,.ai-bank-btns{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.ai-scenario-btn{text-align:left;max-width:100%}
.ai-scenario-btn[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft);font-weight:700}

/* ===== Priority 3 & 4: Premium Product Redesign (MathMentor Next-Gen EdTech UI) ===== */
:root{
  --ink:#162336;
  --muted:#526071;
  --accent:#B85022;
  --accent-dark:#8F3B15;
  --line:#E6DDD0;
  --surface:#FFFFFF;
  --bg:#FAF7F2;
  --mm-cream:#FAF7F2;
  --mm-ivory:#FFFFFF;
  --mm-navy:#18283E;
  --mm-brand-orange:#CF6530;
  --mm-orange-accessible:#B85022;
  --mm-soft:#F5EFE6;
  --mm-orange-tint:#FBECE1;
  --mm-shadow:0 1px 3px rgba(22,35,54,0.05),0 10px 28px -6px rgba(22,35,54,0.07);
}
body{background:var(--mm-cream);color:var(--ink);-webkit-font-smoothing:antialiased}
.card{border-color:#E6DDD0;box-shadow:var(--mm-shadow);background:#FFFFFF}
.hero.mm-hero{background:radial-gradient(125% 140% at 100% 0%,#FFF5EA 0%,#FFFFFF 68%);border:1px solid #E5D9C7;box-shadow:0 2px 6px rgba(24,40,62,0.04),0 16px 36px -8px rgba(24,40,62,0.08)}
.mm-feature{background:#FAF7F2;border:1px solid #EDE4D7;border-radius:14px;padding:12px 14px}
.quick-guide{background:#FFFFFF;border:1px solid #E5D9C7;box-shadow:var(--mm-shadow)}
.guide-step{background:#FAF7F2;border:1px solid #EAE0D2;transition:border-color .15s,box-shadow .15s}
.guide-step:hover{border-color:#D8C6AE;box-shadow:0 4px 12px rgba(24,40,62,0.05)}
.guide-cta button[data-action="quick-60s-ai"]{border-color:#D9773F;background:#FFF7F0;color:#9A3E16;font-weight:650}
.guide-cta button[data-action="quick-60s-ai"]:hover{background:#FBE9DA}

/* Upload screen refinement */
.mm-drop{background:linear-gradient(180deg,#FAF7F2 0%,#F5EFE6 100%);border:2px dashed #D4C0A5;border-radius:16px}
.mm-drop:hover,.mm-drop.is-over{border-color:var(--mm-brand-orange);background:#FFF6EC}
.ai-scenario-drawer,.ai-pedagogical-bank{margin-top:12px;border:1px solid #E6DDD0;border-radius:12px;padding:10px 12px;background:#FAF7F2;font-size:13px}
.ai-scenario-btn{background:#FFFFFF;border:1px solid #E2D7C7;border-radius:9px;padding:6px 10px;font-size:12.5px}
.ai-scenario-btn:hover{border-color:var(--mm-brand-orange);background:#FFF8F2}
.ai-scenario-btn[aria-pressed="true"]{border-color:var(--mm-orange-accessible);background:var(--mm-orange-tint);color:var(--mm-orange-accessible);font-weight:700}

/* 3-Zone AI Workstation: Bento Overview & Clean Card Hierarchy */
.ai-overview{background:#FFFFFF;border:1px solid #E2D9CC;border-top:3px solid var(--mm-navy);border-radius:14px;padding:14px 16px;margin:4px 0 14px;box-shadow:0 2px 8px rgba(24,40,62,0.04)}
.ai-ov-title{font-size:15.5px;font-weight:700;color:var(--mm-navy);margin:0 0 6px}
.ai-ov-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}
.ai-ov-grid>div{background:#FAF8F5;border:1px solid #EAE2D6;border-left:3px solid #64748B;border-radius:10px;padding:10px 12px;min-width:0;overflow-wrap:anywhere}
.ai-ov-grid>div[data-testid="ai-ov-steps"]{border-left-color:#2563EB;background:#F8FAFC}
.ai-ov-grid>div[data-testid="ai-ov-errors"]{border-left-color:#D97706;background:#FFFBF5}
.ai-ov-grid>div[data-testid="ai-ov-misconceptions"]{border-left-color:#7C3AED;background:#FAF8FF}
.ai-ov-grid>div[data-testid="ai-ov-remedies"]{border-left-color:#0D9488;background:#F5FBF9}
.ai-ov-grid>div[data-testid="ai-ov-strengths"]{border-left-color:#10B981;background:#F4FDF8}
.ai-ov-grid h4{font-size:12.5px;font-weight:700;letter-spacing:-.1px;color:var(--mm-navy);margin:0 0 6px}
.ai-ov-grid ul,.ai-ov-grid ol{margin:0;padding-left:18px;font-size:13px;line-height:1.5}
.ai-ov-grid li{margin:3px 0}
@media(max-width:760px){.ai-ov-grid{grid-template-columns:1fr}}

/* Workstation toolbar & Copilot assistant drawer */
.mm-ws-tools{margin:10px 0 14px;padding:10px 12px;border:1px solid #E2D9CC;border-radius:12px;background:#FAF7F2;box-shadow:inset 0 1px 0 #FFFFFF}
.mm-ws-tool-btns{display:flex;flex-wrap:wrap;gap:8px}
.ai-copilot{margin-top:10px;padding:12px;border:1px solid #E2D9CC;border-radius:10px;background:#FFFFFF}
.ai-chat-turn{padding:10px 12px;border:1px solid #E6DDD0;border-left:3px solid var(--mm-brand-orange);border-radius:10px;background:#FAF8F5}

/* Checkpoint & Finding cards */
.claim{border:1px solid #E5DDD0;border-left:4px solid #CBD5E1;border-radius:12px;padding:12px 14px;margin:10px 0;background:#FFFFFF;box-shadow:0 1px 2px rgba(22,35,54,0.03);transition:border-color .15s,box-shadow .15s}
.claim:hover{border-color:#D4C5B0}
.claim.is-resolved{border-left-color:#0D9488;background:#FCFDFD}
.claim.is-active{border-color:#D97706;border-left-color:#D97706;box-shadow:0 0 0 3px rgba(245,158,11,0.22)}
.ai-finding[data-kind="suspected_error"]{border-left-color:#D97706}
.ai-finding[data-kind="strength"]{border-left-color:#10B981}
.ai-sugg-box{background:#F8FAFC;border:1px solid #E2E8F0;border-radius:10px;padding:9px 12px;margin:7px 0}
.mm-score-tile.is-ai{background:#FAF6F0;border:1px solid #EBD6BE}
.mm-score-tile.is-teacher{background:#FFFFFF;border:1.5px solid var(--mm-navy);box-shadow:0 2px 8px rgba(24,40,62,0.06)}

/* ===== MathMentor V3: 3-Tier Teacher Intelligence Workspace ===== */
.ai-ov-grid>div:first-child{grid-column:auto}
.ai-ov-grid>div[data-testid="ai-ov-steps"]{grid-column:1/-1;border-left-color:#2563EB;background:#F8FAFC}
.v3-tier1-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-bottom:8px;border-bottom:1px solid #EAE2D6}
.v3-tier1-cta{flex:none;display:flex;align-items:center}
.v3-tier-badge{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;padding:2px 8px;border-radius:99px;background:#EEF2FF;color:#1E3A8A;border:1px solid #C7D2FE;margin-bottom:4px}
.v3-tier-badge.is-tier2{background:#FFF7ED;color:#9A3412;border-color:#FDBA74}
.v3-tier2-head{margin:10px 0 8px}
.v3-tier2-head .ai-legend{margin:4px 0 0}
.v3-generic-steps{margin:12px 0;padding:12px 14px;border:1px solid #E2D9CC;border-radius:12px;background:#FAF8F5}
.v3-subhead{margin:0 0 8px;font-size:14px;color:var(--mm-navy)}
.v3-gen-list{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:8px}
.v3-gen-step{padding:8px 10px;border:1px solid #E5DDD0;border-left:4px solid #10B981;border-radius:10px;background:#FFFFFF}
.v3-gen-step.v3-step-sus{border-left-color:#D97706;background:#FFFBF5}
.v3-gen-step.v3-step-warn{border-left-color:#64748B}
.v3-gen-step-head{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:4px}
.v3-gen-badge{font-size:11.5px;font-weight:600;padding:1px 8px;border-radius:99px;background:#F1F5F9;color:#334155}
.v3-step-sus .v3-gen-badge{background:#FEF3C7;color:#92400E}
.v3-step-ok .v3-gen-badge{background:#DCFCE7;color:#166534}
.v3-gen-text{margin:2px 0 4px;font-size:13.5px}
.v3-deep-drawer{margin:14px 0;border:1px solid #D8C8B4;border-top:3px solid var(--mm-brand-orange);border-radius:12px;background:#FFFDF9;padding:10px 14px}
.v3-deep-summary{cursor:pointer;font-weight:700;font-size:14px;color:var(--mm-navy);line-height:1.4}
.v3-deep-body{margin-top:10px;display:flex;flex-direction:column;gap:12px}
.v3-deep-block{padding:10px 12px;border:1px solid #EAE0D2;border-radius:10px;background:#FFFFFF;font-size:13px;line-height:1.5}
.v3-deep-block h4{margin:0 0 6px;font-size:13.5px;color:var(--mm-navy)}
.v3-deep-block ul,.v3-deep-block ol{margin:4px 0;padding-left:18px}
.v3-deep-block li{margin:4px 0}
.v3-math-table-wrap{overflow-x:auto;margin-top:8px}
.v3-math-table{width:100%;border-collapse:collapse;font-size:12.5px}
.v3-math-table th,.v3-math-table td{border:1px solid #E5DDD0;padding:6px 8px;text-align:left;vertical-align:top}
.v3-math-table th{background:#FAF6F0;color:var(--mm-navy);font-weight:700}
.v3-audit-trail{margin:10px 0;padding:8px 10px;border:1px dashed #CBD5E1;border-radius:8px;background:#F8FAFC}
.v3-audit-trail p{margin:0}
@media(max-width:760px){
 .ai-pagecard{height:31vh;min-height:170px}
 .ai-row,.ai-finding{scroll-margin-top:calc(31vh + 16px);scroll-margin-bottom:72px}
 .ai-review.mm-ws>.ai-bar{padding:4px 10px;gap:8px;flex-wrap:nowrap;align-items:center}
 .ai-review.mm-ws>.ai-bar .ai-bar-state{flex:1 1 auto;font-size:11px;line-height:1.25}
 .ai-review.mm-ws>.ai-bar .ai-approve{flex:0 0 auto;width:auto;min-width:112px;min-height:48px;padding:6px 12px;font-size:13.5px}
 .ai-review.mm-ws>.ai-bar .ai-confirm{flex:1 1 100%}
 .v3-tier1-cta,.v3-tier1-cta .btn{width:100%}
}

.v3-compact-steps {
  max-height: 118px;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.25rem 0.75rem;
  margin: 0.25rem 0 0;
  padding-left: 1.15rem;
  font-size: 0.82rem;
}
.v3-missing-prompt-notice {
  margin: 0.35rem 0 0;
  padding: 0.35rem 0.6rem;
  background: #fffbeb;
  border-left: 3px solid #d97706;
  border-radius: 6px;
  color: #78350f;
}

.ai-overview.v3-tier1 {
  padding: 10px 14px;
  margin: 2px 0 10px;
}
.v3-tier1 .ai-ov-grid {
  gap: 6px;
  margin-top: 6px;
}
.v3-tier1 .ai-ov-grid > div {
  padding: 6px 10px;
}
.v3-tier1 .ai-ov-grid h4 {
  font-size: 12px;
  margin: 0 0 3px;
}
.v3-tier1 .ai-ov-grid ul, .v3-tier1 .ai-ov-grid ol {
  font-size: 12px;
  line-height: 1.35;
}
.v3-tier1 .ai-ov-grid li {
  margin: 2px 0;
}
.v3-compact-steps {
  max-height: 64px !important;
  overflow-y: auto;
  font-size: 11.5px !important;
  line-height: 1.3 !important;
}

/* ===== MathMentor V4 Rebuild: ChatGPT-Reference-First Pedagogical Assessment Sheet ===== */
.ai-review.mm-ws.mm-ws-2col {
  grid-template-columns: minmax(340px, 0.82fr) minmax(0, 1.38fr);
  grid-template-areas:
    "page analysis"
    "page bar";
}
.ai-review.mm-ws.mm-ws-2col.is-focus-mode {
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "analysis"
    "bar";
}
@media (max-width: 760px) {
  .ai-review.mm-ws.mm-ws-2col {
    display: block;
  }
}

.mentor-sheet {
  background: #FFFFFF;
  border: 1px solid #E2D9CC;
  border-top: 4px solid var(--mm-navy);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 2px 10px rgba(24, 40, 62, 0.04);
}
.mentor-sheet-header {
  border-bottom: 2px solid #EAE0D2;
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.mentor-sheet-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.mentor-status-pill {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 99px;
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FDE68A;
}
.mentor-sheet-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.mentor-sheet-title {
  margin: 0 0 4px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.2px;
  color: var(--mm-navy);
}
.mentor-sheet-subtitle {
  margin: 0;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--mm-orange-accessible);
}
.mentor-sec {
  padding: 14px 0;
  border-bottom: 1px solid #EDE4D7;
}
.mentor-sec:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}
.mentor-sec-title {
  margin: 0 0 10px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--mm-navy);
}
.mentor-subhead {
  margin: 12px 0 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--mm-navy);
}
.mentor-tier-pill {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
  white-space: nowrap;
}
.mentor-tier-pill.is-verified {
  background: #DCFCE7;
  color: #166534;
  border: 1px solid #BBF7D0;
}
.mentor-tier-pill.is-review {
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FDE68A;
}
.mentor-tier-pill.is-uncertain {
  background: #F1F5F9;
  color: #334155;
  border: 1px solid #E2E8F0;
}
.mentor-inline-score {
  position: static !important;
  margin-top: 12px;
  padding: 12px 14px;
  border: 1px solid #E2D9CC;
  border-radius: 12px;
  background: #FAF7F2;
}
.mentor-score-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.mentor-score-top .mentor-subhead {
  margin: 0;
}
.mentor-inline-score .ai-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 8px;
}
.mentor-verdict-callout {
  background: #FFFDF9;
  border: 1px solid #E6D5B8;
  border-left: 4px solid var(--mm-brand-orange);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 12px 0;
}
.mentor-verdict-headline {
  margin: 0 0 6px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--mm-navy);
  line-height: 1.45;
}
.mentor-verdict-body {
  margin: 0 0 6px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink);
}
.mentor-parts-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.mentor-part-card {
  border: 1px solid #E5DDD0;
  border-left: 4px solid #10B981;
  border-radius: 12px;
  padding: 12px 14px;
  background: #FFFFFF;
}
.mentor-part-card.is-review {
  border-left-color: #D97706;
  background: #FFFDF9;
}
.mentor-part-card.is-uncertain {
  border-left-color: #64748B;
}
.mentor-part-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.mentor-part-head h4 {
  margin: 0;
  font-size: 14px;
  color: var(--mm-navy);
}
.mentor-student-work {
  margin: 4px 0 6px;
  font-size: 13px;
}
.mentor-math-explain {
  margin: 0 0 8px;
  font-size: 13.5px;
  line-height: 1.55;
}
.mentor-table-caption {
  margin: 6px 0 4px;
  font-size: 12.5px;
  color: var(--mm-navy);
}
.mentor-evidence-notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.mentor-evidence-notes > div {
  padding: 10px 12px;
  border: 1px solid #EAE2D6;
  border-radius: 10px;
  background: #FAF8F5;
  font-size: 13px;
}
.mentor-evidence-notes h4 {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--mm-navy);
}
.mentor-evidence-notes ul {
  margin: 0;
  padding-left: 18px;
}
.mentor-practice-card {
  margin-top: 10px;
  padding: 12px 14px;
  border: 1px solid #CCFBF1;
  border-left: 4px solid #0D9488;
  border-radius: 10px;
  background: #F0FDFA;
  font-size: 13.5px;
}
.mentor-practice-card h4 {
  margin: 0 0 4px;
  font-size: 13.5px;
  color: #115E59;
}
.mentor-practice-card p {
  margin: 0;
  line-height: 1.5;
}
.mentor-teacher-guide {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
  margin: 12px 0;
}
@media (max-width: 760px) {
  .mentor-sheet {
    padding: 12px 12px;
  }
  .mentor-sheet-title {
    font-size: 16.5px;
  }
  .mentor-tier-pill {
    white-space: normal;
  }
  .mentor-inline-score .ai-points {
    grid-template-columns: 1fr;
  }
  .mentor-primary-cta, .mentor-primary-cta .btn {
    width: 100%;
  }
}