@import url('./vendor/fonts.css');
:root{font-family:'Noto Sans Bengali',system-ui,sans-serif;color:#193a36;background:#f3f6f5;font-size:16px;line-height:1.65;--ink:#153e37;--muted:#627570;--green:#175f4d;--lime:#d4f59a;--line:#dce6e2;--white:#fff;--red:#a62c33}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;border-radius:9px;padding:.7rem 1.2rem;background:var(--green);color:white;font-weight:600;transition:background .15s}button:hover{background:#0d4638}button:disabled{opacity:.55;cursor:wait}button.secondary{background:#edf3f0;color:var(--ink);border:1px solid var(--line)}button.danger{background:#a62c33}button.link{padding:.2rem;background:transparent;color:var(--green);text-decoration:underline}a{color:var(--green);text-underline-offset:3px}input,select,textarea{width:100%;border:1px solid #c6d5cf;background:white;padding:.7rem .8rem;border-radius:8px;color:var(--ink)}input[type=checkbox],input[type=radio]{width:1.1rem;height:1.1rem;accent-color:var(--green)}input[type=file]{font-size:.875rem}textarea{min-height:110px;resize:vertical}label{font-size:.9rem;font-weight:500;display:block;margin-bottom:.35rem}h1,h2,h3,p{margin-top:0}h1{font-size:1.85rem;line-height:1.4;letter-spacing:-.5px;margin-bottom:.5rem}h2{font-size:1.25rem}h3{font-size:1.05rem}small,.small{font-size:.875rem}.muted{color:var(--muted)}.loading{max-width:600px;margin:15vh auto;text-align:center}.brand-icon{background:var(--lime);color:var(--ink);display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;font-weight:700;font-size:1.3rem}.shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}.sidebar{background:#103e36;color:#e9f2ee;padding:32px 22px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;font-size:1.35rem;font-weight:700;margin-bottom:40px}.brand-sub{font-size:.8rem;color:#b5cfc4;font-weight:400}.nav{display:grid;gap:9px}.nav button{text-align:left;background:transparent;font-size:1rem;color:#d4e4de;padding:.85rem 1rem;display:flex;gap:14px;align-items:center}.nav button.active{background:#d4f59a;color:#153e37}.nav button:hover:not(.active){background:#205247}.nav-icon{font-size:1.1rem;width:23px;text-align:center}.side-note{margin-top:auto;font-size:.875rem;color:#b6d0c5;border-top:1px solid #386056;padding-top:20px}.workspace{min-width:0}.topbar{height:82px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 40px;gap:16px}.topbar .user{display:flex;gap:14px;align-items:center}.avatar{width:36px;height:36px;background:#eaf1ed;border-radius:50%;display:grid;place-items:center;font-weight:700}.content{padding:34px 40px 60px;max-width:1440px;margin:auto}.page-head{display:flex;align-items:start;justify-content:space-between;gap:24px;margin-bottom:25px}.eyebrow{font-size:.8rem;text-transform:uppercase;letter-spacing:1.6px;color:var(--green);font-weight:600;margin-bottom:10px}.badge{display:inline-block;padding:4px 10px;border-radius:6px;background:#e7f1eb;color:#24594a;font-size:.8rem;font-weight:500}.badge.warn{background:#fff2d6;color:#835916}.badge.red{background:#fce8e9;color:#a62c33}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.panel{background:#fff;border:1px solid var(--line);border-radius:15px;padding:25px;min-width:0}.panel h2{margin-bottom:18px}.hero-panel{background:var(--ink);color:white;border:0}.hero-panel p{color:#d0e0d8}.hero-panel .badge{background:#365d50;color:#d4f59a}.stat{font-size:2rem;font-weight:700;line-height:1.4}.stat-label{font-size:.875rem;color:var(--muted);margin-top:8px}.stack{display:grid;gap:18px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.field{min-width:0}.notice{background:#f0f6ed;border:1px solid #dbe7cf;border-radius:10px;padding:13px 16px;font-size:.9rem;line-height:1.7}.notice.warn{background:#fff8e9;border-color:#ecddb8;color:#725220}.notice.error{background:#fff1f2;border-color:#f0c9cd;color:#962b35}.divider{height:1px;background:var(--line);margin:24px 0}.empty{padding:25px 18px;text-align:center;color:var(--muted);border:1px dashed #cddbd4;border-radius:10px}.empty h3{color:var(--ink)}.upload-area{border:2px dashed #a6c0b3;border-radius:12px;background:#f7faf8;padding:25px;text-align:center}.upload-area:focus-within{border-color:var(--green)}.upload-area.drag{background:#e1f1e6}.progress{height:7px;width:100%;border-radius:10px;background:#e4eee8;overflow:hidden}.progress>span{display:block;background:#6da447;height:100%}.book{border-top:1px solid var(--line);padding:19px 0}.book:first-child{border-top:0;padding-top:0}.book h3{margin-bottom:6px}.book p{margin-bottom:10px}.metrics{margin-bottom:25px}.tab-switch{display:flex;background:#e9f0ec;padding:5px;border-radius:10px;margin-bottom:24px;gap:5px}.tab-switch button{flex:1;background:transparent;color:#536f62}.tab-switch button.active{background:white;color:var(--ink);box-shadow:0 1px 4px #0000000d}.form-actions{display:flex;gap:12px;align-items:center;margin-top:20px}.check{display:flex;align-items:flex-start;gap:10px;font-weight:400}.check input{flex-shrink:0;margin-top:6px}.coverage{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.year{border:1px solid var(--line);border-radius:10px;padding:15px;background:white}.year strong{display:block;font-size:1.1rem}.year small{display:block;color:var(--muted)}.year.has{border-color:#97c4ab;background:#eff7f2}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px}.exam-aside{align-self:start;position:sticky;top:20px}.timer{font-family:system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:2.3rem;font-weight:700;margin:10px 0;color:var(--ink)}.timer.urgent{color:var(--red)}.question{padding:25px;border:1px solid var(--line);border-radius:14px;background:white;margin-bottom:20px;scroll-margin-top:20px}.question h3{font-size:1.13rem;line-height:1.8;margin:14px 0}.question-top{display:flex;gap:10px;align-items:center;justify-content:space-between}.q-number{background:#edf3ef;padding:4px 12px;border-radius:5px;font-weight:600;font-size:.875rem}.option{display:flex;gap:13px;padding:13px 16px;border:1px solid var(--line);border-radius:9px;margin-top:10px;cursor:pointer;font-weight:400;font-size:1rem;align-items:flex-start}.option:has(input:checked){background:#eef7e7;border-color:#659759}.option input{margin-top:6px;flex-shrink:0}.option-letter{font-weight:600;color:#60776a}.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin:20px 0}.palette button{padding:7px 0;border:1px solid var(--line);color:var(--ink);background:#f5f8f6;font-family:system-ui,sans-serif;font-size:.85rem}.palette button.answered{background:var(--green);color:white}.source{background:#f3f7f4;border-left:3px solid #80a475;border-radius:5px;padding:16px;margin:18px 0;font-size:.9rem}.source blockquote{margin:10px 0;color:#365d4d;white-space:pre-wrap}.explanation{white-space:pre-wrap}.result-option{padding:11px 14px;border:1px solid var(--line);border-radius:8px;margin:9px 0}.result-option.right{background:#edf8e7;border-color:#b4d5a2}.result-option.wrong{background:#fff2f2;border-color:#e4b3b9}.result-option p{margin:7px 0 0;font-size:.9rem;color:var(--muted)}details{margin-top:14px}summary{cursor:pointer;font-weight:600;color:var(--green);padding:8px 0}.chat-log{display:grid;gap:10px;margin:12px 0;max-height:380px;overflow:auto}.bubble{padding:12px 15px;background:#eef3f0;border-radius:10px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.95rem}.bubble.user{background:#e1f0d0;margin-left:30px}.bubble.model{margin-right:30px}.chat-input{display:flex;gap:10px;align-items:flex-start}.chat-input textarea{min-height:65px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left}th,td{padding:14px 10px;border-bottom:1px solid var(--line);font-size:.9rem}th{color:var(--muted);font-weight:500;white-space:nowrap}.auth{display:grid;grid-template-columns:1fr 1fr;min-height:100vh}.auth-intro{padding:8vh 8vw;background:var(--ink);color:white;display:flex;flex-direction:column;justify-content:center}.auth-intro h1{font-size:2.5rem;max-width:440px}.auth-intro p{color:#c1d7cc;font-size:1.1rem;max-width:420px}.auth-intro .brand{margin-bottom:60px}.auth-form{padding:8vh 6vw;display:flex;flex-direction:column;justify-content:center}.auth-form>div{max-width:460px;width:100%;margin:auto}.auth-feature{padding:18px 0;border-top:1px solid #3c6257;display:flex;gap:18px;align-items:center;max-width:420px}.auth-feature span{color:var(--lime);font-family:system-ui;font-size:.85rem}.auth-feature p{margin:0;font-size:1rem;color:#e2ece6}#toast{position:fixed;right:24px;bottom:24px;max-width:440px;padding:14px 20px;background:#153e37;color:white;border-radius:10px;z-index:100;box-shadow:0 8px 30px #0002;display:none}#toast.show{display:block}#toast.error{background:#942d38}dialog{width:min(850px,94vw);max-height:90vh;border:1px solid var(--line);border-radius:16px;padding:28px;color:var(--ink)}dialog::backdrop{background:#0d302bbb;backdrop-filter:blur(3px)}dialog textarea.json{font-family:ui-monospace,monospace;font-size:.875rem;min-height:40vh;line-height:1.6}dialog #close-modal{margin-top:18px}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #84aaf4;outline-offset:3px}.line-list{font-size:.95rem;padding-left:45px;white-space:pre-wrap;overflow-wrap:anywhere}.line-list li{padding:5px 8px;border-bottom:1px solid var(--line)}.footer-note{margin:25px 0 0;font-size:.8rem;color:var(--muted)}[hidden]{display:none!important}
@media(max-width:1100px){.shell{grid-template-columns:200px 1fr}.sidebar{padding:25px 14px}.content{padding:28px 24px}.topbar{padding:0 24px}.coverage{grid-template-columns:repeat(4,1fr)}.exam-layout{grid-template-columns:minmax(0,1fr) 210px}.grid.four{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.shell{display:block}.sidebar{height:auto;position:static;padding:14px 16px}.brand{margin-bottom:15px;font-size:1.2rem}.brand-sub,.side-note{display:none}.nav{display:flex;overflow-x:auto;gap:5px}.nav button{white-space:nowrap;padding:9px 12px;font-size:.875rem;gap:6px}.nav-icon{width:auto}.topbar{height:auto;min-height:65px;padding:12px 18px}.topbar .crumb{font-size:.875rem}.content{padding:24px 16px 45px}.grid,.grid.three{grid-template-columns:1fr}.page-head{display:block}.page-head>.badge{margin-top:10px}.panel{padding:20px}.coverage{grid-template-columns:repeat(3,1fr)}.exam-layout{display:flex;flex-direction:column-reverse}.exam-aside{position:static;width:100%;padding:16px}.exam-aside .palette{display:none}.timer{font-size:1.7rem;margin:0}.exam-aside .row{justify-content:space-between}.question{padding:18px}.auth{display:block}.auth-intro{padding:30px 24px}.auth-intro .brand{margin-bottom:20px}.auth-intro h1{font-size:1.8rem}.auth-feature{display:none}.auth-form{padding:30px 24px}.bubble.user{margin-left:12px}.bubble.model{margin-right:12px}.chat-input{flex-wrap:wrap}.chat-input button{width:100%}h1{font-size:1.6rem}.year{padding:11px}.stat{font-size:1.7rem}#toast{left:16px;right:16px;bottom:16px}.form-actions{flex-wrap:wrap}}
@media print{.sidebar,.topbar,.exam-aside,button,details,.footer-note{display:none!important}.shell{display:block}.content{padding:0}.question{break-inside:avoid}.panel{border:1px solid #ccc}.grid.four{display:flex;gap:20px}}