:root{color-scheme:dark;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.55;color:#eeedf5;background:#0b0a10;--accent:#a99aff;--button:#8066f5;--muted:#a09bab;--line:#2b2738;--paper:#14121d;--panel:#1c1928;--good:#7dd9bc;--bad:#ffa5b0}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 70% 0%,#19132688,transparent 48%),#0b0a10;min-height:100vh}button,input,select{font:inherit}button{font-weight:650;cursor:pointer;border:1px solid transparent;border-radius:10px;padding:12px 20px;background:var(--button);color:#fff;white-space:normal}button:hover:not(:disabled){filter:brightness(1.12)}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #b7a8ff;outline-offset:3px}a{color:var(--accent)}[hidden]{display:none!important}
header{height:78px;padding:20px 28px;background:#0f0d17;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{color:#fff;font-size:26px;font-weight:850;letter-spacing:-1px;text-decoration:none;display:flex;align-items:center}.brand>span:first-child{color:var(--accent)}.brand-name{font-size:14px;font-weight:600;letter-spacing:0;margin-left:18px;color:var(--muted)}.badge{font-size:12px;background:#231e37;color:#c4b8ff;padding:5px 12px;border-radius:7px;border:1px solid #38304f}
main{max-width:1440px;margin:auto;padding:40px 5% 60px;min-width:0}h1{font-size:clamp(28px,3vw,40px);line-height:1.2;letter-spacing:-1.1px;margin:10px 0 18px;font-weight:800;overflow-wrap:anywhere}h1 em{font-style:normal;color:var(--accent)}h2{font-size:20px;line-height:1.4;margin:0 0 16px;font-weight:700}h3{font-weight:650}.eyebrow{color:var(--muted);font-size:11px;letter-spacing:.14em;font-weight:750;text-transform:uppercase}.intro{margin:0 0 30px}.intro .eyebrow{margin-top:0}.intro>p:last-child{color:var(--muted);margin:12px 0;max-width:650px}
.app-layout{display:grid;grid-template-columns:238px minmax(0,1fr);max-width:1800px;margin:auto;min-height:calc(100vh - 78px)}.sidebar{background:#100e1a;border-right:1px solid var(--line);padding:26px 16px;min-width:0;position:sticky;top:0;align-self:start;height:100vh;max-height:1000px}.sidebar>.eyebrow{padding:0 12px;margin:5px 0 16px}.sidebar nav{display:flex;flex-direction:column;gap:6px}.side-link{text-align:left;background:transparent;color:#aaa5b9;font-size:14px;font-weight:600;padding:13px 14px;border-radius:9px}.side-link::before{display:inline-block;width:25px;color:#91899f;font-size:17px;content:'◇'}.side-link[data-view=cards]::before{content:'▤'}.side-link[data-view=profile]::before{content:'◎'}.side-link[data-view=admin]::before{content:'▥'}.side-link.active{background:#28213f;color:#c9beff;box-shadow:inset 2px 0 #9b83ff}.side-link.active::before{color:#b49fff}.sidebar-quota{margin:40px 10px 18px;padding:20px 0;border-top:1px solid var(--line)}.sidebar-quota span{display:block;color:var(--muted);font-size:10px;letter-spacing:.13em}.sidebar-quota strong{display:block;font-size:35px;line-height:1.5;color:#d4caff}.sidebar-quota small{display:block;color:var(--muted);font-size:13px}.sidebar #logout-button{padding:10px 12px;font-size:13px;color:var(--muted)}.app-layout main{width:100%;padding:44px clamp(22px,4vw,64px);margin:0;max-width:1500px}
.import-panel{background:linear-gradient(120deg,#1c1828,#211b33);border:1px solid #342b46;border-radius:16px;padding:28px 30px;box-shadow:0 12px 36px #0002;margin-bottom:22px}.import-panel h2{font-size:22px}.input-row{display:flex;gap:12px}.input-row>button{min-width:175px;box-shadow:0 6px 22px #8066f529}label{display:block;font-size:13px;font-weight:600;margin-bottom:7px;color:#c2bccf}input,select{width:100%;min-width:0;padding:12px 14px;background:#100e19;border:1px solid #40374f;border-radius:9px;color:#f1eef9}input::placeholder{color:#7e778e}.panel-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;font-size:13px;color:var(--muted)}.text-button{background:transparent;color:var(--accent);padding:4px 0}.secondary{background:#252035;color:#d1c6ff;border:1px solid #413650;font-size:14px}.notice{font-size:13px;color:var(--muted);line-height:1.6;margin:12px 0 0}#message{min-height:20px;margin:12px 0;font-size:14px;color:var(--accent)}#message.error{color:var(--bad)}
.workspace{display:grid;grid-template-columns:225px minmax(0,1fr);gap:22px;align-items:start}.section-title{display:flex;justify-content:space-between;align-items:baseline}.section-title h2{font-size:17px}.section-title>span,#library-message{color:var(--muted);font-size:13px}.lesson-card{width:100%;text-align:left;display:block;background:var(--paper);color:#e5e0ee;border:1px solid var(--line);padding:18px;margin-bottom:12px;border-radius:12px}.lesson-card.active{background:#252034;border-color:#735f9c;box-shadow:inset 3px 0 #a18ae3}.lesson-card strong{display:block;overflow-wrap:anywhere;font-size:15px}.lesson-card small{display:block;margin-top:7px;font-size:12px;font-weight:400;color:var(--muted)}.lesson-card .state{font-size:12px;margin-top:14px;color:var(--accent)}.reader{background:var(--paper);border:1px solid var(--line);border-radius:16px;min-height:405px;padding:26px;min-width:0}#reader-empty{text-align:center;max-width:370px;margin:40px auto}#reader-empty p{color:var(--muted)}.empty-number{display:block;font-size:52px;font-weight:750;color:#a08acb;line-height:1.2;margin-bottom:22px}.reader-heading{display:flex;justify-content:space-between;gap:14px;align-items:start;flex-wrap:wrap}.reader-heading>div{flex:1;min-width:180px}.reader-heading h2{margin:8px 0 4px;font-size:25px;letter-spacing:-.5px;overflow-wrap:anywhere}.reader-heading button{padding:9px 12px;flex-shrink:0}#job-status:not(:empty){padding:18px;background:#211c2e;border:1px solid var(--line);border-radius:10px;margin:20px 0;color:#c5bbd7}#player iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;margin-top:20px}.segment{padding:19px 0;border-bottom:1px solid var(--line)}.segment.playing{background:#282039;border-radius:10px;padding-inline:12px}.speaker{font-size:12px;letter-spacing:.05em;font-weight:750;color:var(--accent);text-transform:uppercase}.english{font-size:18px;margin:6px 0;line-height:1.65;color:#eeebf4}.translation{color:var(--muted);font-size:16px;margin:5px 0}.reading-mode.hide-translations .translation{display:none}#transcript .exercise .translation{display:block}
.practice-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:24px 0 12px;border-bottom:1px solid var(--line);padding-bottom:14px}.mode-button{background:transparent;color:#aaa1bb;padding:8px 11px;font-size:13px}.mode-button.active{background:#3a2b58;color:#e0d3ff}.exercise{background:#17131f;border:1px solid var(--line);border-radius:12px;padding:20px;margin:16px 0}.exercise h3{font-size:18px;line-height:1.5;margin:8px 0 14px}.exercise form{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.exercise form input{flex:1;min-width:180px}.exercise button,.segment button{margin:4px 8px 4px 0}.option{display:block;width:100%;text-align:left;background:#221c2e;color:#e4ddec;border:1px solid #393042;font-weight:450}.feedback{color:#ffc59b;font-size:14px}.feedback.correct{color:var(--good)}.time-button{background:#2a203d;color:#c6b1ef;font-size:12px;padding:4px 8px}.source-quote{border-left:3px solid #6b538e;padding:8px 14px;color:#b5a8c9;background:#201829}audio{width:100%;margin:14px 0}
.auth-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:80px;align-items:center;max-width:1150px;padding-block:70px}.auth-story h1{font-size:clamp(38px,5vw,58px);line-height:1.1}.auth-story>p{color:var(--muted);max-width:430px;font-size:18px}.auth-story>.eyebrow{font-size:12px;color:var(--accent)}.sample-phrase{background:linear-gradient(120deg,#211a30,#17131f);border:1px solid #3c304c;border-left:3px solid #9170c3;padding:22px 28px;margin:28px 0;border-radius:0 14px 14px 0}.sample-phrase>span{font-size:11px;letter-spacing:.12em;color:var(--accent)}.sample-phrase p{font-size:28px;font-weight:600;margin:10px 0}.sample-phrase small{font-size:14px;color:var(--muted)}.trial-note strong{color:#c1abec;font-size:17px}.trial-note p{color:var(--muted);margin:6px 0}.auth-box{background:var(--paper);padding:34px;border:1px solid var(--line);border-radius:18px}.auth-tabs,.admin-tabs{display:flex;gap:8px;margin-bottom:24px}.auth-tabs button,.admin-tabs button{color:#aaa0ba;background:transparent}.auth-tabs button{flex:1}.auth-tabs button.active,.admin-tabs button.active{background:#2e2245;color:#dacaff}.auth-box label,.account-panel label{margin-top:15px}.auth-box form>button{width:100%;margin-top:24px}#auth-message{color:var(--bad);min-height:24px}
.account-panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px;margin:22px 0}.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.account-grid .account-panel{margin-top:0}.account-panel form>button{margin-top:18px}.account-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding:22px 0}.account-stats strong{display:block;color:var(--accent);font-size:32px}.account-stats span{font-size:13px;color:var(--muted)}.admin-control{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:14px 0}.table-wrap{overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:12px;margin:20px 0 28px}table{width:100%;border-collapse:collapse;font-size:13px}th{text-align:left;color:#c4b9d4;background:#211b2d;font-weight:600}td,th{padding:14px;vertical-align:top;border-bottom:1px solid var(--line);overflow-wrap:anywhere}td .notice{margin-top:5px}.admin-user-form{display:flex;align-items:center;flex-wrap:wrap;gap:8px;min-width:260px}.admin-user-form input[type=number]{width:75px;padding:6px}.admin-user-form input[type=checkbox]{width:auto;margin:0 8px 0 0}.admin-user-form label{display:flex;align-items:center;margin:0}.admin-user-form button{padding:7px 12px}#profile-message,#admin-message{color:var(--accent)}
.report-toolbar{display:flex;align-items:end;gap:20px;flex-wrap:wrap;margin:24px 0 12px}.report-toolbar label{margin:0}.report-toolbar select{display:block;margin-top:6px;min-width:140px}.report-toolbar .check-label{display:flex;align-items:center;gap:9px;min-height:46px;font-weight:450}.check-label input{width:17px;height:17px;accent-color:var(--button)}.report-toolbar>button{margin-left:auto}.report-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:24px 0}.kpi-card{background:linear-gradient(130deg,#211a31,#15111e);border:1px solid #33293f;border-radius:14px;padding:22px}.kpi-card>span{font-size:13px;color:#b5a9c6}.kpi-card>strong{display:block;font-size:36px;letter-spacing:-1px;line-height:1.3;margin:12px 0;color:#f6efff}.kpi-card>small{display:block;color:var(--muted);font-size:11px;line-height:1.5}.report-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:20px}.report-panel{border:1px solid var(--line);background:var(--paper);padding:24px;border-radius:14px;min-width:0;margin-bottom:20px}.report-grid .report-panel{margin-bottom:0}.report-grid+ .report-panel{margin-top:20px}.report-panel h2{font-size:17px;margin-bottom:8px}.report-panel>svg{width:100%;height:auto;display:block;margin:16px 0}.chart-grid{stroke:#312738;stroke-width:1}.chart-label{fill:#a99cb8;font-size:11px}.chart-users{fill:#ae91ff}.chart-imports{fill:#6bd6bf}.chart-legend{display:flex;gap:20px;margin-top:18px;font-size:12px}.legend-users{color:#bba0ff}.legend-imports{color:#7bdfc9}.metric-row{margin-top:20px}.metric-row-heading{display:flex;justify-content:space-between;gap:12px;font-size:13px}.metric-row-heading>span{color:#bcb0ca}.meter{height:7px;background:#292131;border-radius:5px;margin-top:8px;overflow:hidden}.meter-fill{height:100%;background:#a585e7;border-radius:5px}.meter-fill.good{background:#70cdb2}.meter-fill.bad{background:#e68fa1}.meter-fill.neutral{background:#80718e}.report-empty{padding:20px 0;color:var(--muted);font-size:14px}.report-panel summary,.report-method summary{font-size:13px;color:#beacd9;cursor:pointer}.report-panel details{margin-top:14px}.report-panel .table-wrap{margin-bottom:0}.report-method{border-top:1px solid var(--line);padding:20px 0}.report-method p{max-width:880px}footer{max-width:1600px;margin:0 auto;padding:20px 28px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}
@media(min-width:1700px){.app-layout main{padding-inline:70px}.workspace{grid-template-columns:270px minmax(0,1fr)}}
@media(max-width:1200px){.workspace{grid-template-columns:1fr}.library #lessons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.lesson-card{margin:0 0 8px}.account-grid{grid-template-columns:1fr}.report-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}.report-grid{grid-template-columns:1fr}.auth-layout{gap:35px}}
@media(max-width:800px){header{height:68px;padding:18px 20px}.brand-name{display:none}.app-layout{display:block}.sidebar{position:static;height:auto;max-height:none;padding:12px 14px;border-right:0;border-bottom:1px solid var(--line)}.sidebar>.eyebrow,.sidebar-quota{display:none}.sidebar nav{flex-direction:row;flex-wrap:wrap;gap:4px}.side-link{padding:9px 10px;font-size:13px}.side-link::before{width:20px}.sidebar #logout-button{padding:8px 10px}.app-layout main{padding:28px 18px}.intro{margin-bottom:24px}.input-row{flex-direction:column}.import-panel{padding:22px 20px}.panel-footer{align-items:start;flex-direction:column}.reader{padding:20px}.reader-heading{flex-direction:column}.reader-heading>div{min-width:0}.reader-heading button{align-self:start}.exercise{padding:16px}.exercise form input{min-width:0;flex-basis:100%}.account-stats{grid-template-columns:repeat(2,1fr)}.library #lessons{grid-template-columns:1fr}.auth-layout{grid-template-columns:1fr;padding:32px 6%;gap:25px}.auth-story .sample-phrase{display:none}.auth-story h1{font-size:36px}.auth-box{padding:24px}.auth-page .badge{display:none}.account-panel,.report-panel{padding:20px}.report-toolbar{gap:12px}.report-toolbar>button{margin-left:0}.kpi-card{padding:16px}.kpi-card>strong{font-size:30px}footer span{display:none}}
@media(prefers-reduced-motion:no-preference){button{transition:background-color .15s,border-color .15s}}