:root{--ink:#18342e;--forest:#173f36;--forest-2:#235b4d;--cream:#f7f1e5;--paper:#fffdf8;--coral:#ef765f;--gold:#dfa938;--line:#ded8ca;--muted:#66756f;--shadow:0 18px 50px rgba(23,63,54,.12);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--cream)}*{box-sizing:border-box}body{margin:0;min-width:320px;background:var(--cream)}button,input{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:300px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;padding:28px 22px 22px;background:var(--forest);color:#fff;display:flex;flex-direction:column;overflow:hidden}.brand{display:flex;gap:12px;align-items:center;margin-bottom:26px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:var(--coral);font:800 22px Georgia,serif}.brand b,.brand small{display:block}.brand b{letter-spacing:.08em;font-size:14px}.brand small{color:#bcd0c9;margin-top:3px;font-size:12px}.progress-card{padding:17px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.07);border-radius:16px;margin-bottom:16px}.progress-label{display:flex;justify-content:space-between;align-items:center;font-size:13px}.progress-label strong{color:#ffd775}.progress-track{height:7px;background:rgba(255,255,255,.15);border-radius:10px;margin:12px 0 9px;overflow:hidden}.progress-track span{display:block;width:0;height:100%;background:var(--coral);border-radius:inherit;transition:width .35s}.progress-card small{color:#bcd0c9}.search{height:44px;display:flex;align-items:center;gap:9px;border-radius:12px;background:rgba(255,255,255,.09);padding:0 13px;margin-bottom:14px}.search svg{width:18px;fill:none;stroke:#bcd0c9;stroke-width:2}.search input{width:100%;border:0;outline:0;background:transparent;color:#fff;font-size:14px}.search input::placeholder{color:#a9c0b8}#lesson-list{overflow:auto;padding-right:4px;flex:1;scrollbar-color:#52766c transparent}.lesson-link{width:100%;display:grid;grid-template-columns:34px 1fr 20px;align-items:center;gap:9px;border:0;background:transparent;color:#d8e5e1;text-align:left;padding:10px 9px;border-radius:11px;margin:2px 0}.lesson-link:hover{background:rgba(255,255,255,.07)}.lesson-link.active{background:#fff;color:var(--forest)}.lesson-link .num{font-weight:800;color:#f2ba50}.lesson-link.active .num{color:var(--coral)}.lesson-link .name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.lesson-link .done{opacity:0}.lesson-link.completed .done{opacity:1;color:#64c8a4}.danger{color:#ffd2ca!important;margin-top:12px;border-color:rgba(255,255,255,.2)!important}main{min-width:0}.topbar{height:98px;padding:0 clamp(22px,5vw,70px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(247,241,229,.86);backdrop-filter:blur(10px);position:sticky;top:0;z-index:10}.topbar h1{font:700 clamp(25px,3vw,36px)/1.05 Georgia,serif;margin:3px 0 0}.eyebrow,.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:11px;font-weight:800;color:var(--coral)}.top-actions{display:flex;align-items:center;gap:18px}.points{display:grid;grid-template-columns:20px auto;gap:0 4px;align-items:center}.points span{color:var(--gold);grid-row:1/3}.points b{font-size:18px}.points small{font-size:10px;color:var(--muted)}.lesson-wrap{max-width:960px;margin:auto;padding:38px clamp(20px,5vw,60px) 50px}.lesson-intro{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:26px}.lesson-intro p{margin:7px 0 0;font-size:17px}.lesson-intro .role{color:var(--muted);font-size:13px}.pill{display:inline-flex;background:#e2eee8;color:var(--forest);padding:6px 11px;border-radius:20px;font-weight:700}.complete-button{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:14px;background:var(--paper);color:var(--ink);padding:12px 16px}.complete-button .check{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;border:1px solid var(--line);color:transparent}.complete-button.completed{border-color:#77bea5;background:#e9f5ef}.complete-button.completed .check{background:var(--forest-2);border-color:var(--forest-2);color:#fff}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:24px;overflow:auto}.tabs button{white-space:nowrap;border:0;background:transparent;padding:13px 16px;color:var(--muted);font-weight:700;border-bottom:3px solid transparent}.tabs button[aria-selected=true]{color:var(--forest);border-color:var(--coral)}.tabs button span{background:#e8dfcf;padding:2px 7px;border-radius:10px;margin-left:5px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:clamp(22px,4vw,38px);box-shadow:var(--shadow)}.panel h2{font:700 clamp(24px,3vw,32px)/1.15 Georgia,serif;margin:5px 0}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:25px}.ghost,.primary{border-radius:11px;padding:10px 15px;font-weight:750}.ghost{border:1px solid var(--line);background:transparent;color:var(--ink)}.primary{border:1px solid var(--forest);background:var(--forest);color:#fff}.dialogue{display:grid;gap:10px}.speech{display:grid;grid-template-columns:42px 1fr;gap:12px;padding:14px;border-radius:16px;background:#f7f4ec}.speech:nth-child(even){background:#edf4f0}.speaker{display:grid;place-items:center;width:36px;height:36px;background:var(--forest);color:#fff;border-radius:12px;font-weight:900}.speech:nth-child(even) .speaker{background:var(--coral)}.speech p{margin:0 0 5px;white-space:pre-line;font-size:17px;line-height:1.55}.speech .translation{color:var(--muted);font-size:14px}.dialogue.hide-translation .translation{display:none}.tip{display:flex;gap:13px;background:#fff4db;border:1px solid #efd79e;border-radius:14px;padding:14px 16px;margin-top:20px}.tip span{display:grid;place-items:center;flex:0 0 23px;height:23px;background:var(--gold);color:#fff;border-radius:50%;font:700 14px Georgia}.tip p{margin:1px 0;font-size:14px}.flashcard{height:290px;perspective:1000px;max-width:610px;margin:8px auto 20px}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flash-front,.flash-back{position:absolute;inset:0;backface-visibility:hidden;border-radius:22px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;text-align:center}.flash-front{background:var(--forest);color:#fff}.flash-back{background:#ffe2d8;color:var(--ink);transform:rotateY(180deg)}.flashcard span{font-size:12px;text-transform:uppercase;letter-spacing:.15em;opacity:.72}.flashcard strong{font:700 clamp(28px,5vw,46px)/1.2 Georgia,serif;margin:20px 0}.flashcard small{opacity:.7}.card-controls{display:flex;justify-content:center;gap:10px}.word-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:28px}.word-chip{padding:13px 15px;border:1px solid var(--line);border-radius:12px}.word-chip b,.word-chip span{display:block}.word-chip span{font-size:13px;color:var(--muted);margin-top:3px}.word-chip.learned{border-color:#76b99f;background:#edf7f2}.grammar-card{display:grid;grid-template-columns:90px 1fr;gap:24px;align-items:center;margin-top:25px;padding:25px;background:#edf4f0;border-radius:18px}.grammar-symbol{display:grid;place-items:center;width:80px;height:80px;border-radius:24px;background:var(--forest);color:#fff;font:700 28px Georgia}.grammar-card p{white-space:pre-line;font-size:17px;line-height:1.7;margin:0}.study-hint{margin-top:18px;border-left:4px solid var(--coral);padding:10px 16px}.study-hint p{margin:4px 0;color:var(--muted)}.score{background:#e5f1eb;padding:8px 13px;border-radius:20px;font-weight:800}.task{padding:20px 0;border-top:1px solid var(--line)}.task:first-child{border-top:0}.task-label{display:flex;align-items:flex-start;gap:12px;font-weight:650;line-height:1.5}.task-label span{display:grid;place-items:center;flex:0 0 28px;height:28px;border-radius:9px;background:var(--forest);color:#fff}.answer-row{display:flex;gap:9px;margin:14px 0 0 40px}.answer-row input{min-width:0;flex:1;border:1px solid var(--line);border-radius:11px;background:#fff;padding:12px 13px;outline:0}.answer-row input:focus{border-color:var(--forest)}.feedback{margin:9px 0 0 40px;font-size:14px}.feedback.good{color:#1d7456}.feedback.bad{color:#b44d3a}.lesson-nav{display:flex;justify-content:space-between;margin-top:24px}.muted{color:var(--muted);font-size:13px}.menu-button{display:none}.icon-button{border:0;background:transparent}.modal{position:fixed;inset:0;z-index:50;display:none;place-items:center;padding:20px}.modal.open{display:grid}.modal-backdrop{position:absolute;inset:0;background:rgba(13,38,32,.64);backdrop-filter:blur(4px)}.modal-card{position:relative;width:min(510px,100%);background:var(--paper);border-radius:24px;padding:36px;box-shadow:var(--shadow)}.modal-card h2{font:700 30px Georgia;margin:5px 0 22px}.modal-card>p{font-size:20px;margin:0 0 14px}.modal-card input{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px}.modal-close{position:absolute;right:18px;top:14px;border:0;background:transparent;font-size:28px}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:22px}#practice-feedback{min-height:25px;margin-top:10px;font-size:14px}.toast{position:fixed;left:50%;bottom:28px;z-index:70;transform:translate(-50%,120px);background:var(--ink);color:#fff;border-radius:12px;padding:12px 18px;transition:.3s;box-shadow:var(--shadow)}.toast.show{transform:translate(-50%,0)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:860px){.app-shell{display:block}.sidebar{position:fixed;z-index:40;width:min(320px,88vw);transform:translateX(-105%);transition:.3s}.sidebar.open{transform:none}.menu-button{display:grid;gap:4px;padding:8px}.menu-button span{display:block;width:22px;height:2px;background:var(--ink)}.topbar{height:82px;padding:0 18px;gap:12px}.topbar .ghost{display:none}.topbar h1{font-size:23px}.lesson-wrap{padding-top:25px}.lesson-intro{align-items:flex-start}.complete-button span:last-child{display:none}}
@media(max-width:580px){.points small{display:none}.points{grid-template-columns:18px auto}.lesson-intro{display:block}.complete-button{margin-top:16px}.section-head{align-items:flex-start}.section-head .ghost{padding:8px 10px}.panel{padding:21px 17px}.speech{grid-template-columns:34px 1fr;padding:12px 10px}.speaker{width:30px;height:30px}.speech p{font-size:16px}.word-grid{grid-template-columns:1fr}.grammar-card{grid-template-columns:1fr}.grammar-symbol{width:56px;height:56px;border-radius:17px}.answer-row{margin-left:0;flex-direction:column}.feedback{margin-left:0}.card-controls{flex-wrap:wrap}.lesson-nav button{padding:10px;font-size:13px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.admin-link{text-decoration:none}.admin-body{min-height:100vh;background:var(--cream)}.admin-header{height:82px;padding:0 clamp(20px,5vw,70px);display:flex;align-items:center;justify-content:space-between;background:var(--forest);color:#fff}.admin-header .brand{margin:0}.admin-header .ghost{color:#fff;border-color:rgba(255,255,255,.25);text-decoration:none}.admin-actions{display:flex;gap:9px}.admin-main{max-width:1180px;margin:auto;padding:48px 28px}.admin-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:30px}.admin-heading h1{font:700 clamp(34px,5vw,50px)/1 Georgia,serif;margin:7px 0 12px}.admin-heading p{color:var(--muted);margin:0}.admin-stat{min-width:130px;padding:18px 22px;border-radius:18px;background:var(--forest);color:#fff}.admin-stat strong,.admin-stat span{display:block}.admin-stat strong{font:700 34px Georgia}.admin-stat span{font-size:12px;color:#bfd1cb}.admin-panel{background:var(--paper);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.admin-toolbar{display:flex;gap:12px;padding:20px;border-bottom:1px solid var(--line)}.admin-search{flex:1}.admin-search input{width:100%;border:1px solid var(--line);border-radius:11px;padding:11px 13px;outline:0}.admin-table-wrap{overflow:auto}.admin-table{width:100%;border-collapse:collapse;min-width:780px}.admin-table th,.admin-table td{text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);font-size:14px}.admin-table th{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.08em}.student{display:flex;align-items:center;gap:10px}.student>span{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:#e8efe9;color:var(--forest);font-weight:800}.student b,.student small{display:block}.student small{color:var(--muted);margin-top:2px}.status{display:inline-flex;padding:6px 10px;border-radius:20px;font-size:12px;font-weight:800}.status.active{background:#dff1e8;color:#1d6b50}.status.pending{background:#f1e9dc;color:#7e6741}.admin-empty{padding:40px;text-align:center;color:var(--muted)}@media(max-width:650px){.admin-header .brand small,.admin-header .brand b{display:none}.admin-main{padding:30px 14px}.admin-heading{align-items:flex-start}.admin-stat{min-width:100px}.admin-toolbar{padding:14px}.admin-actions a{display:none}}
.access-body{min-height:100vh;background:var(--forest);display:grid;place-items:center;padding:28px}.access-shell{width:min(980px,100%);display:grid;grid-template-columns:1.05fr .95fr;background:var(--paper);border-radius:30px;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.28)}.access-brand{min-height:650px;background:var(--forest);color:#fff;padding:48px;display:flex;flex-direction:column;align-items:flex-start}.access-brand .brand-mark{margin-bottom:80px}.access-brand h1{font:700 clamp(48px,7vw,76px)/.88 Georgia,serif;letter-spacing:-.04em;margin:10px 0 24px}.access-brand p{color:#c4d5cf;max-width:390px;font-size:17px;line-height:1.6}.access-badge{margin-top:auto;border:1px solid rgba(255,255,255,.22);padding:9px 14px;border-radius:30px;color:#f1d287}.access-card{padding:clamp(32px,6vw,65px);display:flex;flex-direction:column;justify-content:center}.access-card h2{font:700 34px Georgia,serif;margin:8px 0 22px}.access-card form{display:grid;gap:14px}.access-card form label{display:grid;gap:6px;font-size:13px;font-weight:750}.access-card input{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 13px;outline:0}.access-card input:focus{border-color:var(--forest)}.payment-icon{display:grid;place-items:center;width:58px;height:58px;margin-bottom:22px;border-radius:18px;background:#fff0c9;color:#9b6d0c;font:700 25px Georgia}.access-card .logout-button{margin-top:10px}.access-card [hidden]{display:none!important}@media(max-width:760px){.access-body{padding:0;background:var(--paper)}.access-shell{display:block;border-radius:0;min-height:100vh}.access-brand{min-height:auto;padding:28px}.access-brand .brand-mark{margin-bottom:28px}.access-brand h1{font-size:42px}.access-brand p,.access-badge{display:none}.access-card{padding:36px 24px}}
.account-button{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:6px 11px 6px 6px;border-radius:24px;font-weight:750}.account-avatar{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--coral);color:#fff;font-size:12px}.auth-copy{color:var(--muted);margin:-12px 0 20px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:#eee8dc;padding:4px;border-radius:12px;margin-bottom:20px}.auth-tabs button{border:0;background:transparent;padding:9px;border-radius:9px;color:var(--muted);font-weight:750}.auth-tabs button.active{background:#fff;color:var(--forest);box-shadow:0 2px 10px rgba(23,63,54,.08)}#auth-form{display:grid;gap:14px}#auth-form label{display:grid;gap:6px;font-size:13px;font-weight:750}#auth-form input{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 13px;outline:0}#auth-form input:focus{border-color:var(--forest)}.auth-submit{width:100%;padding:12px}.auth-error{min-height:20px;color:#b44d3a;font-size:13px}.cloud-status{display:flex;gap:12px;align-items:center;background:#edf7f2;border-radius:14px;padding:16px;margin:20px 0}.cloud-status>span{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--forest-2);color:#fff}.cloud-status b,.cloud-status small{display:block}.cloud-status small{color:var(--muted);margin-top:3px}.logout-button{width:100%}@media(max-width:860px){.account-button{padding:6px}.account-button #account-label{display:none}}@media(max-width:580px){.top-actions{gap:7px}.account-button{order:-1}.points{display:none}}