:root{color-scheme:dark;--bg:#0b1221;--panel:#15213a;--panel2:#1c2b48;--border:#30405b;--text:#f4f7ff;--muted:#a7bad4;--subtle:#7e93b1;--accent:#ffdb64;--accent2:#ffc43e;--mint:#6ce7b5;--red:#ff8595;--blue:#76b7ff;--shadow:0 18px 44px rgba(2,6,18,.22);font-family:system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 50% -140px,#24365b 0,transparent 610px),var(--bg);color:var(--text)}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}h1,h2,h3,p{margin-top:0}p{line-height:1.55}small{font-size:.76rem}.shell{max-width:1120px;min-height:100vh;margin:auto;padding:0 28px 120px}.header{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.08);gap:10px}.identity{display:flex;align-items:center;gap:12px}.logomark{width:48px;height:48px;position:relative;display:grid;place-items:center;background:var(--accent);border-radius:15px;color:#101b33;font-size:33px;font-weight:900}.crosshair{position:absolute;color:var(--text);background:#293959;font-size:10px;right:-5px;top:-4px;padding:4px;border-radius:50%}.logoword{font-size:28px;letter-spacing:-1.3px;font-weight:900;line-height:1}.logoword>span{color:var(--accent)}.logoword small{display:block;font-size:9px;letter-spacing:1.4px;color:var(--muted);margin-top:8px;font-weight:800}.header-right{display:flex;align-items:center;gap:8px}.mini-stat{padding:10px 12px;border:1px solid var(--border);border-radius:12px;color:var(--text);white-space:nowrap;font-size:13px;font-weight:850}.mini-stat.xp{color:var(--accent)}main{padding:27px 0}.tabs{position:fixed;z-index:20;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:5px;padding:7px;background:rgba(20,31,52,.98);border:1px solid #41506a;border-radius:20px;box-shadow:0 12px 35px #0008;backdrop-filter:blur(16px);width:max-content;max-width:calc(100% - 20px)}.tabs a{min-width:94px;display:flex;align-items:center;flex-direction:column;gap:3px;font-size:11px;font-weight:750;color:var(--muted);padding:9px 13px;border-radius:14px}.tabs a.active{color:#101b33;background:var(--accent)}.tab-icon{font-size:24px;font-weight:900;line-height:1.1}.eyebrow{color:var(--accent);letter-spacing:1.6px;font-size:11px;font-weight:900;text-transform:uppercase;margin-bottom:8px}.hero{background:linear-gradient(127deg,#203758 0%,#15253f 57%,#203b56 100%);border:1px solid #41557a;border-radius:26px;position:relative;overflow:hidden;padding:37px;box-shadow:var(--shadow)}.hero:before{content:'Я';pointer-events:none;position:absolute;right:-12px;top:-73px;font-size:320px;font-weight:1000;line-height:1;color:#ffffff09;transform:rotate(-14deg)}.hero>div{position:relative;z-index:1}.hero h1{font-size:clamp(28px,4vw,48px);letter-spacing:-1.8px;line-height:1.12;max-width:620px;margin:0 0 14px}.hero h1 em{font-style:normal;color:var(--accent)}.hero p{color:#cfddf0;max-width:520px;margin-bottom:24px}.hero-buttons,.actions,.quiz-actions,.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 19px;border-radius:13px;font-size:14px;font-weight:850;border:1px solid transparent;transition:transform .12s,filter .12s;text-align:center}.btn:active{transform:translateY(2px)}.btn-main{background:var(--accent);color:#171b2a;border-color:#ffe88c}.btn-alt{background:#283d60;border-color:#466083;color:#fff}.btn-soft{background:transparent;border-color:#536482;color:#dce7fc}.btn-good{background:#275746;border-color:#3f9372;color:#d7ffef}.btn-red{background:#492635;border-color:#985161;color:#ffe0e4}.btn-sm{min-height:38px;padding:8px 11px;font-size:12px}.btn-full{width:100%}.section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:31px 0 15px}.section-head h2{font-size:23px;letter-spacing:-.55px;margin:0}.section-head p{font-size:13px;color:var(--muted);margin:4px 0 0}.link{color:var(--accent);font-size:13px;font-weight:800}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0}.stat{padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:18px}.stat b{font-size:25px;display:block;color:#fff}.stat small{color:var(--muted)}.cols{display:grid;grid-template-columns:1.3fr 1fr;gap:16px}.panel,.unit-tile,.mission,.stage-head,.learning-card,.quiz-box,.result-box{background:var(--panel);border:1px solid var(--border);border-radius:20px}.panel{padding:22px}.panel h3{font-size:18px;margin:0 0 13px}.small-note,.muted{color:var(--muted)}.small-note{font-size:13px;line-height:1.55}.progress{height:9px;overflow:hidden;background:#2a3651;border-radius:9px}.progress>div{height:100%;background:linear-gradient(90deg,#f8cc3f,#ffef94);border-radius:9px;transition:width .3s}.progress-line{display:flex;justify-content:space-between;gap:8px;margin:12px 0 8px;font-size:12px;font-weight:800}.progress-line span:last-child{color:var(--accent)}.mission-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.mission{padding:15px;display:flex;align-items:center;gap:12px}.mission .mission-icon{font-size:21px;background:#293a59;border-radius:12px;min-width:42px;height:42px;display:grid;place-items:center}.mission.done{border-color:#48886e;background:#183a35}.mission b{display:block;font-size:14px;margin-bottom:2px}.mission small{color:var(--muted)}.mission .tick{margin-left:auto;color:var(--mint);font-size:18px}.hintbar{display:flex;align-items:center;gap:10px;padding:14px 16px;border-radius:14px;background:#233658;color:#d7e6fe;margin-top:14px;font-size:13px}.unit-tile{padding:18px;display:flex;align-items:center;gap:14px;text-align:left;width:100%;color:var(--text);min-height:100px}.unit-tile:hover:not(:disabled){border-color:var(--accent)}.unit-tile.locked{opacity:.53}.unit-number{width:52px;height:52px;flex-shrink:0;display:grid;place-items:center;border-radius:16px;background:#324663;color:var(--accent);font-weight:900;font-size:22px}.unit-tile.completed .unit-number{background:#2a634e;color:#adffdf}.unit-label{flex:1;min-width:0}.unit-label b{display:block;margin-bottom:6px;font-size:16px}.unit-label small{display:block;line-height:1.4;color:var(--muted)}.unit-arrow{color:var(--accent);font-size:21px;font-weight:900}.unit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.stage-head{margin:22px 0 12px;padding:18px;display:flex;align-items:center;gap:15px;background:linear-gradient(90deg,#213652,#17243d)}.stage-icon{min-width:48px;height:48px;border-radius:14px;background:#344762;color:var(--accent);display:grid;place-items:center;font-weight:1000;font-size:21px}.stage-head h2{margin:0 0 3px;font-size:18px}.stage-head p{color:var(--muted);font-size:13px;margin:0}.page-header{margin-bottom:20px}.page-header h1{font-size:clamp(26px,4vw,39px);letter-spacing:-1.2px;margin:0 0 5px}.page-header p{color:var(--muted);margin:0}.back{background:none;border:0;color:var(--accent);font-size:13px;font-weight:850;padding:5px 0 16px}.course-info{display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center;margin:0 0 18px}.course-info .badge{font-size:12px;color:var(--accent);border:1px solid #5b583c;padding:6px 10px;border-radius:99px}.vocab-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.learning-card{padding:18px;display:flex;flex-direction:column;gap:9px;min-width:0}.learning-card.learned{border-color:#388a6b;background:#17302e}.learning-card .topline{display:flex;justify-content:space-between;align-items:center;gap:12px}.learning-card .topline small{color:var(--muted)}.russian{font-weight:900;font-size:clamp(19px,2.1vw,25px);line-height:1.3;overflow-wrap:anywhere}.russian.lg{font-size:clamp(26px,4vw,38px)}.phon{color:var(--accent);font-size:14px;font-weight:700;overflow-wrap:anywhere}.translation{font-size:14px;color:#d7e5f9;line-height:1.5}.card-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:8px}.letter-catalog{display:grid;grid-template-columns:repeat(6,1fr);gap:9px}.letter-btn{min-height:112px;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:16px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px}.letter-btn b{font-size:32px}.letter-btn small{color:var(--muted)}.letter-btn.on{border-color:#48a47c;background:#1d423d}.letter-btn:hover{border-color:var(--accent)}.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}.pill{border:1px solid #4a5874;border-radius:99px;color:var(--muted);background:#1a2842;padding:9px 13px;font-size:12px;font-weight:800}.pill.active{background:var(--accent);color:#1b2030;border-color:var(--accent)}.quiz-box{max-width:760px;margin:18px auto;padding:27px}.quiz-head{display:flex;justify-content:space-between;gap:8px;font-size:13px;font-weight:800;margin-bottom:10px}.question-tag{display:inline-block;margin:20px 0 13px;color:var(--accent);font-size:12px;letter-spacing:.8px;font-weight:900}.question-text{font-size:clamp(22px,3.5vw,34px);font-weight:950;line-height:1.34;margin-bottom:22px;overflow-wrap:anywhere}.answers{display:grid;grid-template-columns:1fr 1fr;gap:10px}.option{min-height:73px;border:1px solid #425475;background:#223553;color:var(--text);border-radius:14px;padding:15px;text-align:left;font-weight:750;line-height:1.45;overflow-wrap:anywhere}.option:hover:not(:disabled){border-color:var(--accent)}.option.correct{background:#204c3b;border-color:#52ba8c;color:#dcffec}.option.wrong{background:#522935;border-color:#ec7285}.feedback{margin-top:16px;padding:16px;background:#243850;border:1px solid #526483;border-radius:14px}.feedback.good{background:#174239;border-color:#468c74}.feedback.bad{background:#4a2c3a;border-color:#af697c}.feedback b{display:block;margin-bottom:3px}.feedback p{font-size:13px;margin:4px 0}.feedback .phon{margin:6px 0}.text-answer{display:block;width:100%;background:#1b2b49;border:1px solid #526483;color:#fff;border-radius:13px;padding:14px;margin:0 0 12px;font-size:18px}.tokens{display:flex;flex-wrap:wrap;gap:9px;min-height:52px;padding:12px;margin:12px 0;border:1px dashed #647795;border-radius:13px}.token{background:#2d4166;color:#fff;border:1px solid #7182a1;padding:10px 12px;border-radius:11px;font-size:14px;font-weight:750}.tokens.target{min-height:68px;background:#1a2945}.token[disabled]{opacity:.35}.big-center{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}.big-center .big-emoji{font-size:72px}.result-box{max-width:700px;margin:30px auto;padding:36px}.result-box h2{font-size:31px;margin:0}.review-face{padding:32px 18px;border:1px solid #475a78;background:linear-gradient(160deg,#203755,#192740);border-radius:18px;text-align:center;margin:23px 0}.review-face .russian{margin:10px 0 13px}.hidden-reveal{border-top:1px solid #556686;padding-top:18px;margin-top:18px}.practice-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.practice-option{border:1px solid var(--border);background:var(--panel);padding:22px;border-radius:18px;text-align:left;color:#fff;min-height:160px}.practice-option span{font-size:27px;display:block;margin-bottom:13px}.practice-option b{display:block;margin-bottom:6px;font-size:18px}.practice-option small{color:var(--muted);line-height:1.6;display:block}.practice-option:hover{border-color:var(--accent)}.split-1-1{display:grid;grid-template-columns:1fr 1fr;gap:16px}.detail-line{display:flex;justify-content:space-between;gap:8px;padding:12px 0;border-bottom:1px solid var(--border);font-size:13px}.detail-line b{color:var(--accent)}.callout{background:#263b58;border-left:3px solid var(--accent);padding:13px 14px;border-radius:0 12px 12px 0;font-size:13px;color:#dce9ff;line-height:1.55;margin:16px 0}.save-input{display:none}.range-select{background:#243855;border:1px solid #586d8b;border-radius:10px;color:#fff;padding:10px 12px}.modal-shade{position:fixed;z-index:50;inset:0;background:#050912d9;display:flex;align-items:center;justify-content:center;padding:18px;overflow:auto}.modal{background:#1a2944;border:1px solid #536887;box-shadow:0 20px 90px #000b;border-radius:23px;padding:25px;max-height:90dvh;overflow:auto;max-width:490px;width:100%;position:relative}.modal-close{position:absolute;top:15px;right:15px;border:1px solid #536887;background:#263959;color:white;border-radius:10px;padding:7px 12px}.modal-russian{font-size:75px;font-weight:950;margin:16px 0}.toast{position:fixed;z-index:100;bottom:115px;left:50%;transform:translateX(-50%);background:var(--accent);color:#1b2231;border-radius:12px;box-shadow:0 15px 30px #0007;padding:12px 16px;font-size:13px;font-weight:850;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90%;text-align:center}.toast.show{opacity:1}.notice{border:1px solid #56637b;background:#1e2d45;border-radius:14px;padding:12px 15px;color:var(--muted);font-size:13px;line-height:1.55;margin:13px 0}.voice-result{border:1px solid #486482;border-radius:12px;padding:14px;margin-top:10px}.voice-result .ru{font-weight:900;font-size:20px}.empty{text-align:center;padding:35px 20px;border:1px dashed #50627c;border-radius:18px;color:var(--muted)}
@media(max-width:700px){.shell{padding:0 14px 116px}.header{height:77px}.logomark{height:40px;width:40px;border-radius:11px;font-size:28px}.logoword{font-size:23px}.logoword small{font-size:7px;letter-spacing:1px;margin-top:5px}.mini-stat{padding:8px 7px;font-size:11px}.hero{padding:25px 21px;border-radius:20px}.hero:before{font-size:245px;top:-45px}.hero h1{font-size:34px}.stats{gap:7px}.stat{padding:12px}.stat b{font-size:23px}.stat small{font-size:11px}.cols,.split-1-1,.vocab-list{grid-template-columns:1fr}.unit-grid{grid-template-columns:1fr}.panel{padding:17px}.mission-grid{grid-template-columns:1fr 1fr}.mission{padding:10px;gap:8px}.mission .mission-icon{min-width:35px;height:35px;font-size:17px}.mission b{font-size:12px}.mission small{font-size:11px}.tabs{bottom:0;left:0;transform:none;width:100%;max-width:none;justify-content:space-around;padding:7px 3px calc(7px + env(safe-area-inset-bottom));border-radius:15px 15px 0 0;border-left:none;border-right:none;border-bottom:none}.tabs a{min-width:0;flex:1;padding:8px 0;font-size:10px}.tab-icon{font-size:23px}main{padding:19px 0}.section-head h2{font-size:21px}.letter-catalog{grid-template-columns:repeat(4,minmax(0,1fr))}.letter-btn{min-height:95px}.letter-btn b{font-size:29px}.quiz-box{padding:17px;margin:8px 0}.answers{grid-template-columns:1fr}.option{min-height:62px}.practice-options{grid-template-columns:1fr 1fr}.practice-option{padding:15px;min-height:140px}.practice-option b{font-size:14px}.practice-option small{font-size:12px}.result-box{padding:23px 18px;margin:15px 0}.hero-buttons .btn{width:100%}.course-info{grid-template-columns:1fr}.modal{padding:20px}.toast{bottom:92px}.header-right{gap:3px}}
@media(max-width:355px){.letter-catalog{grid-template-columns:repeat(3,minmax(0,1fr))}.mission-grid,.practice-options{grid-template-columns:1fr}.logoword small{display:none}.tabs a{font-size:9px}.tabs{padding-left:0;padding-right:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.progress>div,.toast,.btn{transition:none!important}}

/* Rusilingo 2.0 · saját fiókok, szervermentés */
body.locked .tabs,body.locked .header-right{display:none}
.auth-shell{min-height:calc(100dvh - 220px);display:flex;align-items:center;justify-content:center;padding:24px 0}
.auth-panel{width:min(100%,470px);padding:30px 26px;border-radius:24px;background:linear-gradient(145deg,#1b2c4b,#121d32);border:1px solid var(--border);box-shadow:var(--shadow);text-align:center}
.auth-logo{display:grid;place-items:center;margin:0 auto 13px;width:62px;height:62px;border-radius:20px;background:var(--accent);color:#122039;font-size:44px;font-weight:900}
.auth-panel h1{font-size:40px;letter-spacing:-2px;margin:3px 0 8px}.auth-gold{color:var(--accent)}.auth-panel>p{color:var(--muted);font-size:14px}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;margin:20px 0;border-radius:12px;background:#0e192c;padding:4px;gap:4px}.auth-tabs button{border:0;color:var(--muted);border-radius:9px;padding:12px;background:transparent;font-weight:750}.auth-tabs button.active{background:#344b6f;color:white}
.auth-form{display:grid;gap:14px;text-align:left}.auth-form label{display:grid;gap:7px;color:#dbe7fc;font-size:13px;font-weight:700}.auth-form input{width:100%;padding:14px 13px;border:1px solid #456081;border-radius:12px;background:#0f1a2e;color:#fff;min-height:48px;outline-offset:2px}.auth-form input:focus{border-color:var(--accent)}
.auth-form .btn{margin-top:4px}.auth-error{padding:12px;border:1px solid #b75d72;color:#ffb9c4;border-radius:12px;background:#602b3b;margin-bottom:16px;text-align:left}.auth-note{font-size:12px!important;line-height:1.5;padding-top:10px}.account-name{font-size:12px;color:var(--accent);max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-panel .auth-form{max-width:440px;margin:18px 0}.account-actions{margin-top:24px}.sync-alert{background:#4a2e22;border:1px solid #cd986d;border-radius:12px;margin-top:14px;padding:14px;color:#ffe1c6;font-size:13px}.sync-alert .actions{margin-top:13px}.sync-alert button{font-size:12px}
@media(max-width:520px){.auth-shell{padding:5px 0 20px;min-height:calc(100dvh - 140px)}.auth-panel{padding:25px 18px}.auth-panel h1{font-size:35px}.account-name{max-width:90px}}