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/* ---------- Bluebook uslubidagi test rejimi ---------- */
.exam-body{background:#0d1420;overflow:hidden}
/* ===== Bluebook uslubidagi imtihon rejimi (yorug' mavzu) ===== */
.bb-shell{display:block}
body.exam-body{background:#fff;color:#1e1e1e;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,sans-serif}
.bb{position:fixed;inset:0;display:grid;grid-template-rows:auto 1fr auto;background:#fff;color:#1e1e1e;--line:#d8d8d8}
.bb button,.bb .button{font-family:inherit}
.bb-top{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;padding:10px 24px 8px;background:#fff;border-bottom:2px dashed #b9b9b9}
.bb-title strong{display:block;font-size:17px;font-weight:700;color:#1e1e1e;line-height:1.3}
.bb-title small{display:block;color:#4a4a4a;font-size:13px;letter-spacing:0;margin-top:2px}
.bb-directions{background:none;border:0;padding:0;min-height:24px;color:#1e1e1e;font-size:13px;font-weight:600;gap:6px}
.bb-directions:hover{color:#324dc7;filter:none}
.bb-clock{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:120px}
.bb-clock strong{font-size:26px;font-weight:600;font-variant-numeric:tabular-nums;color:#1e1e1e;line-height:1.15}
.bb-clock strong.error-text{color:#b3261e!important}
.bb-clock strong.timer-hidden{visibility:hidden}
.bb-clock .text-button{font-size:12px;color:#1e1e1e;border:1px solid #9a9a9a;border-radius:999px;padding:1px 14px;min-height:24px;background:#fff}
.bb-clock .text-button:hover{background:#f1f1f1;color:#1e1e1e}
.bb-clock #save-status{font-size:11px;color:#6b6b6b}
.bb-tools{display:flex;gap:4px;justify-content:flex-end;align-items:flex-start}
.bb-tools button,.bb-tools .button{flex-direction:column;gap:2px;min-height:44px;padding:4px 12px;font-size:11px;font-weight:600;background:none;border:0;border-radius:6px;color:#1e1e1e}
.bb-tools button:hover,.bb-tools .button:hover{background:#f0f0f0;filter:none;color:#1e1e1e}
.bb-tools button .ico,.bb-tools .button .ico{font-size:17px;line-height:1.1}
.bb-tools button[aria-pressed=true]{background:#fff;color:#1e1e1e;box-shadow:inset 0 -3px 0 #1e1e1e}
.bb-main{overflow:auto;padding:0;background:#fff}
.exam-form{max-width:none;margin:0}
.bb-q.hidden-q{display:none}
.bb-q{display:block}
.bb-q-bar{display:flex;align-items:center;gap:14px;padding:6px 24px;margin:0;background:#f1f1f1;border-bottom:1px solid #d8d8d8}
.q-number{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:3px;background:#1e1e1e;color:#fff;font-weight:700;font-size:14px}
.mark-button{background:none;border:0;color:#1e1e1e;min-height:30px;font-size:13px;font-weight:600;padding:2px 6px;gap:5px}
.mark-button:hover{background:#e3e3e3;filter:none;color:#1e1e1e}
.mark-button.marked{color:#b3261e;background:none}
.elim-toggle{margin-left:auto;font-size:12px;font-weight:700;color:#1e1e1e;border:1px solid #1e1e1e;border-radius:4px;min-height:26px;padding:0 8px;background:#fff}
.elim-toggle[aria-pressed=true]{background:#1e1e1e;color:#fff}
.bb-split{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:start;min-height:calc(100dvh - 190px)}
.bb-split.single{grid-template-columns:minmax(0,780px);justify-content:center}
.bb-passage{padding:26px 34px;border-right:2px dashed #b9b9b9;max-height:calc(100dvh - 190px);overflow:auto}
.bb-split .passage{margin:0;background:transparent;border:0;padding:0;font-size:17px;line-height:1.75;color:#1e1e1e;font-family:Georgia,"Times New Roman",serif}
.bb-ask{padding:26px 34px;max-height:calc(100dvh - 190px);overflow:auto}
.bb-ask h2{font-size:17px;line-height:1.7;font-weight:500;color:#1e1e1e;margin-bottom:22px;font-family:Georgia,"Times New Roman",serif}
.options{display:flex;flex-direction:column;gap:12px}
.option-row{display:flex;align-items:center;gap:10px}
.option-row .option{flex:1;margin:0;display:flex;align-items:center;gap:12px;border:1px solid #6b6b6b;border-radius:9px;padding:11px 15px;background:#fff;color:#1e1e1e;font-size:15px;font-weight:400;cursor:pointer;min-height:52px}
.option-row .option:hover{border-color:#324dc7;box-shadow:inset 0 0 0 1px #324dc7}
.option-row .option input{position:absolute;opacity:0;width:0;height:0;margin:0}
.option-letter{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;flex-shrink:0;border:1px solid #1e1e1e;border-radius:50%;font-size:13px;font-weight:600}
.option-text{font-family:Georgia,"Times New Roman",serif}
.option-row .option:has(input:checked){border-color:#324dc7;box-shadow:inset 0 0 0 1px #324dc7}
.option-row .option:has(input:checked) .option-letter{background:#324dc7;border-color:#324dc7;color:#fff}
.option-row .option:has(input:focus-visible){outline:2px solid #324dc7;outline-offset:2px}
.option-row.eliminated .option{opacity:.55}
.option-row.eliminated .option-text{text-decoration:line-through}
.eliminate{min-height:26px;width:26px;padding:0;font-size:12px;font-weight:700;background:#fff;border:1px solid #1e1e1e;color:#1e1e1e;border-radius:50%;text-decoration:line-through}
.eliminate:hover{background:#eee;filter:none;color:#1e1e1e}
.option-row.eliminated .eliminate{background:#1e1e1e;color:#fff;text-decoration:none}
.desmos-tip{margin-top:22px;font-size:13px;color:#4a4a4a}
.desmos-tip summary{cursor:pointer;font-weight:600}
.bb-bottom{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;padding:10px 24px;background:#fff;border-top:2px dashed #b9b9b9}
.bb-user{font-size:15px;font-weight:700;color:#1e1e1e}
#nav-toggle{background:#1e1e1e;border:0;border-radius:6px;font-size:14px;font-weight:600;color:#fff;min-height:38px;padding:8px 18px;justify-self:center}
#nav-toggle:hover{background:#333;filter:none}
.bb-bottom .actions{justify-content:flex-end;gap:10px}
.bb-bottom .actions button{background:#324dc7;border:0;border-radius:999px;min-height:40px;padding:9px 26px;font-size:15px;font-weight:700;color:#fff}
.bb-bottom .actions button:hover{background:#2840ad;filter:none}
.bb-bottom .actions .secondary{background:#324dc7;color:#fff}
.bb-navigator{position:fixed;left:50%;bottom:74px;transform:translateX(-50%);z-index:60;width:min(620px,calc(100% - 26px));background:#fff;border:1px solid #6b6b6b;border-radius:10px;padding:20px;box-shadow:0 18px 50px #00000040;color:#1e1e1e}
.bb-navigator .toolbar{margin-bottom:12px}
.bb-navigator h2{font-size:16px;color:#1e1e1e;text-align:center;flex:1}
.bb-navigator .close-nav{color:#1e1e1e}
.nav-legend{display:flex;gap:18px;justify-content:center;font-size:12px;color:#4a4a4a;margin-bottom:16px;flex-wrap:wrap;border-bottom:1px solid #d8d8d8;padding-bottom:12px}
.legend::before{content:'';display:inline-block;width:12px;height:12px;border:1px dashed #6b6b6b;border-radius:3px;margin-right:6px;vertical-align:-2px;background:#fff}
.legend.answered::before{background:#324dc7;border:1px solid #324dc7}
.legend.marked::before{background:#fff;border:1px solid #b3261e}
.nav-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:10px;margin-bottom:18px;max-height:230px;overflow:auto}
.nav-cell{min-height:40px;padding:0;background:#fff;border:1px dashed #6b6b6b;color:#1e1e1e;font-size:14px;font-weight:600;border-radius:4px}
.nav-cell:hover{background:#eee;filter:none;color:#1e1e1e}
.nav-cell.answered{background:#324dc7;border:1px solid #324dc7;color:#fff}
.nav-cell.marked{position:relative;border-color:#b3261e;border-style:solid}
.nav-cell.marked::after{content:'⚑';position:absolute;top:-8px;right:-4px;font-size:12px;color:#b3261e}
.nav-cell.current{outline:2px solid #1e1e1e;outline-offset:2px}
#review-submit{background:#324dc7;border-radius:999px;color:#fff}
.bb-panel{position:fixed;left:26px;top:96px;z-index:45;width:min(640px,calc(100% - 32px));background:#1e1e1e;border:1px solid #1e1e1e;border-radius:10px;box-shadow:0 24px 70px #00000055;overflow:hidden;resize:both}
.bb-panel.dragging{opacity:.96}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;background:#1e1e1e;color:#fff;cursor:move;font-size:15px;font-weight:600;touch-action:none}
.panel-head .grip{margin-left:auto;margin-right:auto;color:#cfcfcf;letter-spacing:2px;font-size:15px}
.panel-head .close-panel{color:#fff;font-size:17px}
.desmos-host{width:100%;height:520px;min-height:260px;background:#fff}
.desmos-host button,.desmos-host .dcg-btn,.desmos-host input{background:none;border:0;min-height:0;padding:0;margin:0;border-radius:0;color:inherit;font-weight:inherit;box-shadow:none;transition:none}
.desmos-host button:hover{filter:none}
.desmos-host .dcg-action-clear,.desmos-host .dcg-keys button{background:inherit}
.panel-note{font-size:12px;color:#cfcfcf;margin:0;padding:8px 14px;background:#1e1e1e}
#reference-panel{left:auto;right:26px;background:#fff;border:1px solid #6b6b6b;color:#1e1e1e;padding-bottom:10px;resize:none}
#reference-panel .panel-head{background:#1e1e1e}
.reference-table{font-size:13px;color:#1e1e1e}
.reference-table th{text-transform:none;letter-spacing:0;color:#1e1e1e;font-size:13px;width:34%;padding:10px 16px;border-bottom:1px solid #d8d8d8}
.reference-table td{padding:10px 16px;font-family:Georgia,serif;font-size:15px;color:#1e1e1e;border-bottom:1px solid #eee}
#submit-dialog{width:min(430px,calc(100% - 30px));text-align:center;background:#fff;color:#1e1e1e;border:1px solid #6b6b6b;border-radius:10px}
#submit-dialog h2{font-size:20px;color:#1e1e1e}
#submit-dialog .muted{color:#4a4a4a}
#submit-dialog .actions{justify-content:center;margin-top:22px}
#submit-dialog .secondary{background:#fff;color:#324dc7;border:1px solid #324dc7}
#submit-dialog #confirm-submit{background:#324dc7;border-radius:999px}
.bb-exit-tool{color:#1e1e1e;text-decoration:none}.bb-exit-tool:hover{color:#1e1e1e}
.bb-break{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:25px;background:#fff}
.bb-break .card{max-width:520px;text-align:center;padding:40px;background:#fff;border:1px solid #d8d8d8;color:#1e1e1e;box-shadow:0 10px 40px #00000014}
.bb-break .card h1,.bb-break .card h2{color:#1e1e1e}
.bb-break .eyebrow{color:#324dc7}
.bb-break .muted{color:#4a4a4a}
.bb-break button,.bb-break .button{background:#324dc7;border-radius:999px}
.break-timer{display:block;font-size:64px;font-variant-numeric:tabular-nums;color:#1e1e1e;margin:10px 0 28px;letter-spacing:-1px;font-weight:600}
@media(max-width:900px){
 #reference-panel{left:8px;right:8px}
 .bb-top{grid-template-columns:1fr;gap:8px;padding:8px 14px;text-align:center}
 .bb-title strong{font-size:15px}
 .bb-clock{order:-1;flex-direction:row;gap:10px;min-width:0;justify-content:center}
 .bb-clock strong{font-size:22px}
 .bb-tools{justify-content:center;flex-wrap:wrap}
 .bb-split{grid-template-columns:1fr;min-height:0}
 .bb-passage{padding:16px;border-right:0;border-bottom:2px dashed #b9b9b9;max-height:40dvh}
 .bb-ask{padding:16px;max-height:none;overflow:visible}
 .bb-q-bar{padding:6px 14px;gap:8px}
 .bb-bottom{grid-template-columns:1fr;gap:8px;padding:8px 14px}
 .bb-user{display:none}
 .bb-bottom .actions{width:100%;justify-content:space-between}
 .bb-panel{left:8px;right:8px;top:auto;bottom:86px;width:auto}
 .desmos-host{height:320px}
 .bb-navigator{bottom:120px}
}
@media(min-width:1550px){.main-content{padding:40px 50px}.hero{min-height:310px}.hero h2{font-size:35px}.goal-orb{width:210px;height:210px}}
@media(max-width:1180px){.sidebar{width:218px;padding-left:10px;padding-right:10px}.sidebar>.brand{margin-left:10px}.brand{font-size:18px}.workspace{margin-left:218px}.main-content{padding:28px 25px}.topbar{padding:0 25px}.three{grid-template-columns:1fr 1fr}.stat-grid{gap:12px}.stat{padding:18px}.hero{padding:28px}.goal-orb{width:158px;height:158px;margin-right:8px}.goal-orb strong{font-size:45px}.hero h2{font-size:26px}.two{gap:18px}.card{padding:21px}.auth-marketing{padding:40px}.auth-panel{padding:40px}.auth-marketing h1{font-size:35px}}
@media(max-width:900px){.sidebar{transform:translateX(-100%);width:255px;transition:transform .2s}.workspace{margin-left:0}.menu-open .sidebar{transform:translateX(0)}.mobile-menu{display:inline-flex;position:fixed;left:14px;top:17px;z-index:20;width:38px;min-height:36px;padding:3px}.topbar{padding-left:70px;height:70px}.main-content{padding:28px}.hero{min-height:260px}.auth-shell{grid-template-columns:1fr 1fr}.auth-marketing{padding:30px}.auth-panel{padding:30px}.auth-marketing h1{font-size:31px}.orbit-art{width:240px}.orbit-label{left:-5px;font-size:7px}.orbit-ring.second{width:240px;height:240px}.reader{padding:30px}.footer{padding:20px 28px}}
@media(max-width:650px){h1{font-size:27px}.main-content{padding:25px 17px}.topbar{padding-right:17px}.topbar>div:first-child>.muted,.topbar .slash{display:none}.header-date{display:none}.topbar .actions{gap:10px}.page-heading{margin-bottom:22px}.page-heading .muted{font-size:12px}.page-heading .eyebrow{font-size:8px}.hero{padding:25px;min-height:245px}.hero h2{font-size:24px}.hero p{font-size:11px;max-width:245px}.hero .badge{font-size:8px}.goal-orb{display:none}.hero-star{font-size:40px;right:18px;top:20px;opacity:.5}.stat-grid{grid-template-columns:1fr 1fr;gap:12px}.stat{padding:18px}.stat strong{font-size:25px}.stat .muted{font-size:10px}.three,.two{grid-template-columns:1fr;gap:17px}.card{padding:21px;margin-bottom:20px}.grid>.card{margin-bottom:0}.toolbar{gap:10px}.toolbar h2{font-size:17px}.tabs{gap:4px;width:100%}.tabs a{font-size:11px;padding:8px 11px}.search{flex-wrap:wrap;gap:8px}.search select{width:auto;flex:1}.search input{min-width:160px}.search button{padding:10px 14px}.form-grid{grid-template-columns:1fr;gap:0}.footer{flex-direction:column;padding:20px 17px;gap:4px;padding-bottom:70px}.tutor-toggle{right:16px;bottom:16px;font-size:11px;min-height:38px}.exam-bar{padding:12px;gap:10px;flex-wrap:wrap}.exam-bar #save-status{font-size:10px;max-width:170px}.exam-bar strong{font-size:21px}.exam-question{padding:20px}.passage{padding:18px;font-size:16px}.option{font-size:13px;padding:13px}.chapter-link{gap:12px;flex-wrap:wrap}.chapter-link strong{font-size:13px}.chapter-link .badge{font-size:8px}.reader{padding:23px;font-size:18px}.reader-size-16{font-size:16px}.reader-size-20{font-size:20px}.reader-size-22{font-size:22px}.reader-size-24{font-size:24px}.reader-size-26{font-size:26px}.reader-size-28{font-size:28px}.reader-toolbar .muted{display:none}.pagination{flex-wrap:wrap;font-size:10px}.pagination .button{font-size:11px;padding:8px 10px}.quiz-options{grid-template-columns:1fr}.game-word{font-size:35px}.learning-card{padding:20px}.task-row{gap:10px}.task-row>.muted{font-size:9px}.pricing{padding:25px}.auth-shell{display:block}.auth-marketing{padding:27px 25px;border:0}.auth-marketing>.brand{margin:0}.auth-marketing>div,.auth-marketing>p{display:none}.auth-panel{padding:20px 25px 40px}.auth-form{max-width:440px}.auth-form>h2{font-size:29px}.auth-form>.badge{display:none}.auth-form>h2{margin-top:5px}.install{margin:25px auto;padding:27px}.install h1{font-size:27px}dialog{padding:22px}.book-cover{height:275px}.book-cover strong{max-width:100%}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.custom-book-cover{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.25}.book-cover>strong,.book-cover>.eyebrow,.book-cover>span:last-child{position:relative}

/* ====== Yangi: login, CEFR, reyting, AI matni, animatsiya, highlight ====== */
.auth-shell{background:radial-gradient(1200px 600px at 12% 0%,#16224a 0%,transparent 55%),radial-gradient(900px 500px at 100% 100%,#2a1a4d 0%,transparent 55%),#080c16}
.auth-marketing{background:linear-gradient(160deg,#0d1730,#0a1024 60%,#120e2a);border-right:1px solid #1e2a49;display:flex;flex-direction:column;gap:18px;justify-content:center}
.auth-marketing>.brand{margin-bottom:6px;font-size:30px;letter-spacing:2px}
.auth-marketing .brand-icon{background:linear-gradient(140deg,#4f7dff,#8b5cf6);border:0;color:#fff;box-shadow:0 10px 30px #4f7dff44;font-style:normal;font-weight:800;font-size:22px}
.auth-pill{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;font-size:12px;font-weight:600;color:#b8c9ff;background:#16224a80;border:1px solid #2c3e72;border-radius:999px;padding:8px 16px;margin:0}
.auth-marketing h1{font-size:44px;line-height:1.14;letter-spacing:-1.6px;margin:0}
.auth-marketing h1 span{background:linear-gradient(100deg,#5b8cff,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.auth-lead{font-size:14px;max-width:430px;margin:0}
.auth-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:470px}
.auth-stat{background:#0f1a33aa;border:1px solid #23305a;border-radius:14px;padding:16px 18px}
.auth-stat strong{display:block;font-size:24px;letter-spacing:-.5px;line-height:1.3}
.auth-stat span{font-size:12px;color:#93a3c4}
.blue-text{color:#6c9bff}.amber-text{color:#fbbf24}.green-text{color:#34d399}
.auth-quote{background:#0f1a33aa;border:1px solid #23305a;border-radius:16px;padding:18px 20px;max-width:470px}
.auth-quote p{font-size:13px;line-height:1.7;color:#c6d3ee;margin-bottom:14px}
.auth-quote-by{display:flex;align-items:center;gap:10px}
.auth-quote-by strong{display:block;font-size:12px}
.auth-quote-by small{color:#8698bd;font-size:11px}
.auth-copy{font-size:11px;color:#6b7ba0;margin:0}
.auth-panel{display:flex;align-items:center;justify-content:center;background:#0a0f1e}
.auth-form{width:100%;max-width:430px}
.auth-form h2{font-size:32px;letter-spacing:-1px;margin-bottom:8px}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;background:#101a30;border:1px solid #223055;border-radius:14px;padding:6px;margin:20px 0 22px}
.auth-tabs a{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;border-radius:10px;font-size:13px;font-weight:600;color:#9fb0d3}
.auth-tabs a.active{background:linear-gradient(120deg,#4f7dff,#8b5cf6);color:#fff;box-shadow:0 8px 24px #4f7dff33}
.pw-wrap{position:relative;display:block}
.pw-eye{position:absolute;right:6px;top:calc(50% + 3px);transform:translateY(-50%);background:none;border:0;min-height:34px;padding:0 10px;font-size:15px;color:#8aa0c4}
.pw-eye:hover{background:none;filter:none}
button.glow{background:linear-gradient(120deg,#4f7dff,#8b5cf6);box-shadow:0 14px 34px #4f7dff33;min-height:50px;font-size:15px;border-radius:12px}
.auth-link{margin-top:18px;font-size:13px;text-align:center;color:#93a3c4}
.auth-link a{color:#7aa2ff;font-weight:600}

/* ---- Kitob o'quvchisi ---- */
.back-link{display:inline-block;margin-bottom:10px;font-size:12px}
.reader-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:14px;position:sticky;top:0;z-index:12;background:var(--bg);padding:10px 0}
.reader-tools{display:flex;gap:8px}
.cefr-bar{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.cefr-label{font-size:11px;color:var(--muted);margin-right:2px}
.cefr-chip{min-height:30px;padding:4px 12px;font-size:11px;font-weight:700;border-radius:999px;background:#151f30;border:1px solid #2b3b54;color:#9db0c9}
.cefr-chip:hover{filter:brightness(1.25)}
.cefr-chip.on{color:#08101d}
.cefr-chip.on.lv-A1,.cefr-w.lv-A1{background:#7ee787}
.cefr-chip.on.lv-A2,.cefr-w.lv-A2{background:#a5f3a0}
.cefr-chip.on.lv-B1,.cefr-w.lv-B1{background:#7dd3fc}
.cefr-chip.on.lv-B2,.cefr-w.lv-B2{background:#a5b4fc}
.cefr-chip.on.lv-C1,.cefr-w.lv-C1{background:#f0abfc}
.cefr-chip.on.lv-C2,.cefr-w.lv-C2{background:#fca5a5}
.cefr-chip.on{border-color:transparent}
.cefr-chip.cefr-all.on{background:#e2e8f0}
.cefr-w{color:#08101d;border-radius:4px;padding:0 2px;cursor:pointer}
.cefr-badge{font-size:10px;color:#08101d!important;border:0}
.cefr-badge.lv-A1{background:#7ee787}.cefr-badge.lv-A2{background:#a5f3a0}.cefr-badge.lv-B1{background:#7dd3fc}.cefr-badge.lv-B2{background:#a5b4fc}.cefr-badge.lv-C1{background:#f0abfc}.cefr-badge.lv-C2{background:#fca5a5}
.reader-progress{display:block;width:100%;height:4px;border:0;border-radius:999px;background:#182234;margin-bottom:14px;position:sticky;top:56px;z-index:11;appearance:none;-webkit-appearance:none;overflow:hidden}
.reader-progress::-webkit-progress-bar{background:#182234}
.reader-progress::-webkit-progress-value{background:linear-gradient(90deg,#4f7dff,#46dddc)}
.reader-progress::-moz-progress-bar{background:#4f7dff}
.reader-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.word-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
body.focus-mode .sidebar,body.focus-mode .topbar,body.focus-mode .footer,body.focus-mode .tutor-toggle,body.focus-mode .page-heading{display:none}
body.focus-mode .workspace{margin-left:0}
body.focus-mode .main-content{max-width:820px;padding-top:20px}

/* ---- Reyting ---- */
.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px;align-items:end}
.podium-card{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;padding:22px 16px;border:1px solid var(--border);border-radius:18px;background:linear-gradient(160deg,#141f33,#111927)}
.podium-card.place-1{padding:30px 16px;border-color:#c99a2e;background:linear-gradient(160deg,#2a2412,#15192a);box-shadow:0 14px 40px #c99a2e1f}
.podium-card.place-2{border-color:#8b97ab}
.podium-card.place-3{border-color:#a4713f}
.podium-card.mine{outline:2px solid var(--cyan);outline-offset:2px}
.podium-medal{font-size:26px}
.podium-card strong{font-size:14px}
.podium-points{font-size:19px;font-weight:800;color:var(--cyan)}
.my-rank{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;border-color:#2c5a6b;background:linear-gradient(120deg,#12283a,#14202f)}
.my-rank h2{margin:4px 0}
.rank-gap{text-align:right}
.rank-gap strong{display:block;font-size:26px;color:var(--cyan);line-height:1.2}
.rank-table td{vertical-align:middle}
.rank-user{display:flex;align-items:center;gap:10px}
.rank-bar{display:block;width:90px;height:5px;border:0;border-radius:999px;background:#1d2940;margin-bottom:5px;appearance:none;-webkit-appearance:none;overflow:hidden}
.rank-bar::-webkit-progress-bar{background:#1d2940}
.rank-bar::-webkit-progress-value{background:linear-gradient(90deg,#4f7dff,#46dddc)}
.rank-bar::-moz-progress-bar{background:#4f7dff}
.rank{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:#18233a;font-weight:700;font-size:12px}
.rank.top-rank{background:linear-gradient(140deg,#c99a2e,#8a6a1c);color:#1a1405}
tr.my-row{background:#132434}

/* ---- AI javobi ---- */
.ai-output{max-height:min(52dvh,460px);overflow:auto}
.ai-output.rich{white-space:normal;font-size:13.5px;line-height:1.75}
.ai-output.rich h2,.ai-output.rich h3,.ai-output.rich h4{margin:18px 0 8px;font-size:15px;color:#cfe3ff;letter-spacing:0}
.ai-output.rich h2:first-child,.ai-output.rich h3:first-child{margin-top:0}
.ai-output.rich p{margin-bottom:10px}
.ai-output.rich ul,.ai-output.rich ol{margin:0 0 12px;padding-left:22px}
.ai-output.rich li{margin-bottom:6px}
.ai-output.rich hr{border:0;border-top:1px solid #253149;margin:14px 0}
.ai-output.rich code{background:#0f1a2b;border:1px solid #23314a;border-radius:5px;padding:1px 6px;font-size:12.5px}
.ai-output.rich .code-block{background:#0d1523;border:1px solid #23314a;border-radius:10px;padding:12px 14px;overflow:auto;margin-bottom:12px}
.ai-output.rich blockquote{margin:0 0 12px;padding:8px 14px;border-left:3px solid #3a5a8c;background:#101a2b;border-radius:0 8px 8px 0;color:#bacbe4}
.ai-output.rich .math-block{margin:12px 0;padding:16px;line-height:1.35;background:#0f1a2b;border:1px solid #24344f;border-radius:12px;text-align:center;font-family:Georgia,"Times New Roman",serif;font-size:17px;color:#e7f0ff}
.ai-output.rich .math-inline{font-family:Georgia,"Times New Roman",serif;color:#dbe8ff;white-space:nowrap}
.frac{display:inline-block;vertical-align:middle;text-align:center;margin:0 .22em;line-height:1.18;font-size:.96em}
.frac .num{display:block;border-bottom:1.5px solid currentColor;padding:0 .3em}
.frac .den{display:block;padding:0 .3em}
.math-block .frac{font-size:1em}
.sqrt{border-top:1.5px solid currentColor;padding:0 .2em}
.ai-loading{color:var(--cyan)}

/* ---- Toastlar ---- */
#toast-box{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:90;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{background:#16243a;border:1px solid #2f4260;border-radius:12px;padding:11px 18px;font-size:12.5px;color:#dceaff;box-shadow:0 16px 40px #0007;animation:toast-in .22s ease-out}
.toast.out{opacity:0;transition:opacity .3s}
@keyframes toast-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
button.armed{background:linear-gradient(120deg,#c2453f,#96322d)}

/* ---- Sahifa animatsiyasi ---- */
@media(prefers-reduced-motion:no-preference){
 body.page-in .main-content{animation:page-enter .34s cubic-bezier(.22,.7,.3,1) both}
 body.page-in .main-content>*{animation:page-enter .4s cubic-bezier(.22,.7,.3,1) both}
 body.page-in .main-content>*:nth-child(2){animation-delay:.04s}
 body.page-in .main-content>*:nth-child(3){animation-delay:.08s}
 body.page-in .main-content>*:nth-child(4){animation-delay:.12s}
 body.page-in .main-content>*:nth-child(n+5){animation-delay:.16s}
 body.page-out .workspace,body.page-out .auth-shell{opacity:0;transform:translateY(-6px);transition:opacity .14s ease,transform .14s ease}
 body.page-in .auth-shell{animation:page-enter .4s cubic-bezier(.22,.7,.3,1) both}
 .nav-item,.card,.button,button{transition:background .15s,transform .15s,border-color .15s,box-shadow .15s}
 .card:hover{border-color:#2c3b54}
 .quick-link:hover{transform:translateX(3px)}
}
@keyframes page-enter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---- Imtihonda matn belgilash ---- */
.hl-toolbar{position:fixed;left:0;top:0;z-index:70;display:flex;align-items:center;gap:8px;background:#1e1e1e;border-radius:999px;padding:7px 12px;box-shadow:0 12px 30px #00000055}
.hl-pick{width:22px;height:22px;min-height:22px;padding:0;border-radius:50%;border:2px solid #fff3}
.hl-pick[data-color=yellow]{background:#ffe066}
.hl-pick[data-color=green]{background:#86efac}
.hl-pick[data-color=blue]{background:#93c5fd}
.hl-clear{background:none;border:0;color:#fff;min-height:22px;padding:0 4px;font-size:13px}
.hl-clear:hover{background:none;filter:none}
mark.hl{border-radius:3px;padding:0 1px;color:#1e1e1e}
mark.hl-yellow{background:#ffe066}
mark.hl-green{background:#86efac}
mark.hl-blue{background:#93c5fd}

@media(max-width:900px){
 .auth-stats{grid-template-columns:1fr 1fr}
 .auth-marketing h1{font-size:34px}
 .podium{grid-template-columns:1fr;align-items:stretch}
 .my-rank{flex-direction:column;align-items:flex-start}
 .rank-gap{text-align:left}
 .reader-toolbar{position:static}
 .reader-progress{position:static}
}

/* ---- Formulalar (MathML): $...$ ichidagi TeX ---- */
math{font-family:"Latin Modern Math","STIX Two Math","Cambria Math","Noto Sans Math","Asana Math",math,serif}
.mx math{font-size:1.16em;math-style:normal}
.mx math[display="block"]{margin:.5em 0;text-align:center}
.mx-ovl{border-top:.07em solid currentColor;padding-top:.07em}
.mx-und{border-bottom:.07em solid currentColor;padding-bottom:.07em}
.mx-b{font-weight:700}
.mx-unk,code.mx-err{color:#d64545}
/* ---- Admin: formula paneli, jonli ko'rinish, rasm yuklash ---- */
.math-bar{position:sticky;top:0;z-index:6;display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:10px;margin:0 0 18px;background:#0f1a2b;border:1px solid #24344f;border-radius:12px;box-shadow:0 8px 24px #0006}
.math-bar .mb-group{display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding-right:8px;border-right:1px solid #24344f}
.math-bar .mb-group:last-of-type{border-right:0}
.math-bar button{min-width:38px;height:36px;padding:0 10px;border-radius:8px;background:#152238;border:1px solid #2b3b58;color:#e7f0ff;font:16px/1 "Cambria Math","STIX Two Math",Georgia,serif;cursor:pointer;box-shadow:none}
.math-bar button:hover{background:#1d3151;border-color:var(--cyan)}
.math-bar .mb-hint{flex-basis:100%;margin:2px 2px 0;font-size:12px;color:var(--muted)}
.math-preview{margin-top:8px;padding:10px 13px;border:1px dashed #2f4262;border-radius:8px;background:#0b1424;color:#e7f0ff;font-family:Georgia,"Times New Roman",serif;font-size:16px;line-height:1.75}
.math-preview:empty{display:none}
.math-preview::before{content:"Ko‘rinishi";display:block;margin-bottom:4px;font:600 10px/1 Inter,sans-serif;letter-spacing:1px;text-transform:uppercase;color:#60718c}
.img-field{margin:0 0 17px;padding:14px;border:1px dashed #2f4262;border-radius:12px;background:#0d1523;outline:none}
.img-field.drag,.img-field:focus-visible{border-color:var(--cyan);background:#0f2233}
.img-label{display:block;margin-bottom:10px;font-size:12px;font-weight:600;color:#b8c5d9}
.img-current{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-start;margin-bottom:12px}
.img-current img,.img-new img{max-width:260px;max-height:180px;border:1px solid #2b374e;border-radius:8px;background:#fff;object-fit:contain}
.img-controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.img-controls input[type=text]{flex:1;min-width:220px;margin:0}
.img-drop{margin-top:10px}
.img-new{display:flex;gap:10px;align-items:center;margin-top:8px;font-size:12px;color:var(--green)}
.check{display:inline-flex;gap:8px;align-items:center;margin:0}
kbd{padding:1px 6px;border:1px solid #2b3b58;border-radius:5px;background:#152238;font:11px/1.6 ui-monospace,Menlo,monospace}
/* ---- Yozma javobli savol (test rejimi) ---- */
.text-answer{margin-top:8px}
.text-answer-label{display:block;margin:0 0 8px;font-size:14px;font-weight:600;color:#1e1e1e}
.bb-ask .answer-input{width:min(100%,260px);height:56px;padding:0 16px;border:1px solid #6b6b6b;border-radius:9px;background:#fff;color:#1e1e1e;font:500 22px/1 Georgia,"Times New Roman",serif;letter-spacing:.5px}
.bb-ask .answer-input:focus{outline:none;border-color:#324dc7;box-shadow:inset 0 0 0 1px #324dc7}
.text-answer-hint{margin:10px 0 0;font-size:13px;color:#4a4a4a}
@media(max-width:650px){.math-bar{position:static}.math-bar button{min-width:34px;height:34px}.img-current img,.img-new img{max-width:100%}}

/* Telegram orqali kirish: ochiq rozilik, kod va sessiyani uzish. */
.tg-consent{display:flex;align-items:flex-start;gap:12px;margin:4px 0 19px;padding:13px 14px;border-radius:11px;background:#132237;border:1px solid #29405e;font-size:12px;line-height:1.6;color:#c8d7e8;font-weight:500}
.tg-consent input[type=checkbox]{flex:none;width:19px;height:19px;margin:1px 0 0}
.tg-disclaimer{margin-top:15px;line-height:1.65}
.tg-cancel{margin-top:11px}
.tg-check{margin:16px 0 0}
.tg-disconnect{margin:15px 0}
.tg-disconnect .danger{border-color:#713b4b;color:#ffabb8}