/* learn.css — styles for the interactive Learn-to-Type page */
.learn-hero{padding:36px 0 20px;border-bottom:1px solid var(--line)}
.learn-hero h1{font-size:clamp(26px,4vw,40px);font-weight:800;max-width:20ch}
.learn-hero h1 em{font-style:normal;color:var(--green);position:relative}
.learn-hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:3px;height:7px;background:rgba(217,138,43,.32);z-index:-1}
.learn-hero p{font-size:17px;color:var(--muted);max-width:60ch;margin-top:12px}
.learn-progress{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;color:var(--green-d);background:rgba(31,107,79,.1);padding:6px 14px;border-radius:20px}
.learn-course-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.course-lang{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:8px 14px;border:1px solid var(--line);border-radius:8px;background:var(--card);font-weight:800;color:var(--ink);box-shadow:0 1px 0 rgba(16,38,31,.04)}
.course-lang:hover,.course-lang.on{background:var(--green);border-color:var(--green);color:#fff;text-decoration:none}
.learn-mode-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.learn-mode-tab{min-height:40px;padding:8px 16px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);font-weight:800;cursor:pointer}
.learn-mode-tab:hover,.learn-mode-tab.on{background:var(--ink);border-color:var(--ink);color:#fff}

.learn-grid{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start;padding:28px 0}
@media(max-width:860px){.learn-grid{grid-template-columns:1fr}}

/* lesson list */
.lesson-list{display:flex;flex-direction:column;gap:4px;position:sticky;top:80px}
@media(max-width:860px){.lesson-list{position:static}}
.lesson-course-title{font-size:13px;font-weight:800;color:var(--green-d);background:rgba(31,107,79,.09);border:1px solid rgba(31,107,79,.18);border-radius:8px;padding:10px 12px;margin-bottom:6px}
.lesson-group{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--amber);margin:12px 0 4px 4px}
.lesson-item{display:flex;align-items:center;gap:10px;text-align:left;padding:10px 12px;border-radius:9px;border:1px solid transparent;background:transparent;width:100%;transition:.12s}
.lesson-item:hover{background:var(--card);border-color:var(--line)}
.lesson-item.active{background:var(--card);border-color:var(--green)}
.lesson-item.done .li-num{background:var(--green);color:#fff}
.li-num{width:24px;height:24px;border-radius:50%;background:var(--paper-2);color:var(--muted);display:grid;place-items:center;font-size:12px;font-weight:700;flex-shrink:0}
.lesson-item.active .li-num{background:var(--green);color:#fff}
.li-title{font-size:13px;font-weight:600;color:var(--ink);flex:1;line-height:1.3}
.li-stat{font-size:11px;font-weight:700;color:var(--green);font-family:'JetBrains Mono'}

/* lesson panel */
.lesson-panel{display:flex;flex-direction:column;gap:16px}
.lesson-badge{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--green);background:rgba(31,107,79,.1);padding:4px 10px;border-radius:6px;align-self:flex-start}
.lesson-panel h2{font-size:22px;font-weight:700}
.lesson-intro{font-size:15px;color:var(--muted);background:var(--card);border:1px solid var(--line);border-left:3px solid var(--green);border-radius:0 10px 10px 0;padding:14px 16px}
.drill-tabs{display:flex;gap:6px;flex-wrap:wrap}
.drill-tab{font-size:13px;font-weight:600;padding:6px 12px;border:1.5px solid var(--line);border-radius:8px;color:var(--muted);background:var(--paper)}
.drill-tab.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* drill text */
.drill-text{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px;font-family:'JetBrains Mono';font-size:24px;line-height:1.8;letter-spacing:1px;min-height:80px;word-break:break-word}
.lesson-helper{font-size:13px;font-weight:700;color:var(--green-d);background:rgba(31,107,79,.08);border:1px solid rgba(31,107,79,.18);border-radius:8px;padding:9px 12px;margin-bottom:8px}
.drill-text .ch{color:var(--muted);border-radius:3px;padding:1px 0}
.drill-text .ch.ok{color:var(--green)}
.drill-text .ch.cur{background:var(--amber);color:#3a2400;box-shadow:0 0 0 2px var(--amber)}
.drill-text .ch.space.ok{background:rgba(31,107,79,.15)}

#learnInput{width:100%;font-family:'JetBrains Mono';font-size:18px;padding:14px 16px;border:1.5px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);margin-top:4px}
#learnInput:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(31,107,79,.12)}
#learnInput:disabled{background:var(--paper-2)}

/* finger label + stats */
.learn-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
#fingerLabel{font-weight:700;font-size:15px}
.lstats{display:flex;gap:10px;margin-left:auto}
.lstat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 14px;text-align:center;min-width:74px}
.lstat .v{font-family:'JetBrains Mono';font-size:20px;font-weight:700;color:var(--green-d)}
.lstat .k{font-size:10px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600}

/* keyboard */
.keyboard{display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;user-select:none;overflow-x:auto}
.kb-row{display:flex;gap:6px;justify-content:center}
.kb-key{position:relative;min-width:38px;height:42px;border-radius:8px;border:1px solid var(--line);background:var(--paper);
  display:grid;place-items:center;font-family:'JetBrains Mono';font-size:14px;font-weight:600;color:var(--ink);
  border-bottom-width:3px;transition:.08s}
.kb-key.space{min-width:240px}
.kb-key span{pointer-events:none}
/* finger color shown as a bottom accent */
.kb-key::after{content:"";position:absolute;left:6px;right:6px;bottom:3px;height:3px;border-radius:2px;background:var(--fc,transparent);opacity:.5}
.kb-key.fhint{background:color-mix(in srgb, var(--fc) 12%, var(--paper))}
.kb-key.next{background:var(--fc,var(--green));color:#fff;border-color:var(--fc,var(--green));transform:translateY(1px);box-shadow:0 0 0 3px rgba(0,0,0,.06)}
.kb-key.next::after{opacity:0}

/* finger legend */
.finger-legend{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:6px}
.fl-item{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);font-weight:600}
.fl-dot{width:11px;height:11px;border-radius:50%}

/* drill done */
.drill-done{background:linear-gradient(135deg,#15503b,#1f6b4f);color:#fff;border-radius:14px;padding:20px 22px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.drill-done h3{color:#fff;font-size:18px;margin-bottom:2px}
.drill-done .dd-stats{display:flex;gap:18px}
.dd-stat .v{font-family:'JetBrains Mono';font-size:24px;font-weight:800}
.dd-stat .k{font-size:11px;color:#cfe3da}
.drill-done .dd-acts{margin-left:auto;display:flex;gap:8px}

/* homepage teaser */
.learn-teaser{background:linear-gradient(135deg,#1f6b4f,#15503b);color:#fff;border-radius:20px;padding:30px;display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:center}
.learn-teaser h2{color:#fff;font-size:26px;margin-bottom:10px}
.learn-teaser p{color:#d6e7df;font-size:15px;margin-bottom:8px}
.learn-teaser .steps{display:flex;flex-direction:column;gap:7px;margin:14px 0}
.learn-teaser .steps div{font-size:14px;color:#eaf3ef}
.learn-teaser .steps b{color:#ffd9a8;font-family:'JetBrains Mono';margin-right:8px}
.learn-teaser .mini-kb{background:rgba(255,255,255,.1);border-radius:12px;padding:16px;text-align:center}
.learn-teaser .mini-kb .row{display:flex;gap:4px;justify-content:center;margin-bottom:4px}
.learn-teaser .mini-kb .k{width:26px;height:26px;border-radius:5px;background:rgba(255,255,255,.15);display:grid;place-items:center;font-size:11px;font-family:'JetBrains Mono';color:#fff}
.learn-teaser .mini-kb .k.hl{background:#ffd9a8;color:#3a2400;font-weight:700}
@media(max-width:680px){.learn-teaser{grid-template-columns:1fr;padding:24px}.learn-teaser .mini-kb{display:none}}

/* ===== upgraded learn page: intro screen, options, reminder ===== */
.intro-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px;margin-bottom:10px}
.intro-card h2{font-size:24px;font-weight:800;margin-bottom:10px}
.intro-lead{font-size:16px;color:var(--muted);max-width:70ch;margin-bottom:22px}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start;margin-bottom:24px}
.intro-grid h3{font-size:17px;font-weight:700;margin-bottom:12px;color:var(--green-d)}
.intro-steps{margin:0 0 0 18px;display:flex;flex-direction:column;gap:10px}
.intro-steps li{font-size:15px;line-height:1.5}
.kbd{display:inline-grid;place-items:center;min-width:24px;height:24px;padding:0 5px;background:var(--ink);color:var(--paper);border-radius:5px;font-family:'JetBrains Mono';font-size:12px;font-weight:700;vertical-align:middle}
.intro-kb-wrap{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px}
.intro-note{font-size:12px;color:var(--muted);margin-top:10px;text-align:center}
.kb-key.home{border-color:var(--green);border-bottom-color:var(--green);box-shadow:0 0 0 2px rgba(31,107,79,.25)}
@media(max-width:760px){.intro-grid{grid-template-columns:1fr}}
.hand-position-visual{border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,#fff,var(--paper-2));padding:16px;margin-bottom:14px;min-height:190px;display:grid;gap:16px;place-items:center;overflow:hidden}
.screen-card{width:min(260px,80%);height:66px;border:3px solid #9db7c2;border-radius:12px;background:linear-gradient(135deg,#bce9f8,#eaf8fc);display:grid;place-items:center;color:#315161;font-weight:900;box-shadow:0 12px 24px rgba(16,38,31,.08)}
.hand-keyboard{position:relative;width:min(360px,100%);height:92px;border:1px solid var(--line);border-bottom-width:4px;border-radius:14px;background:repeating-linear-gradient(90deg,#fff 0 34px,#eef3ef 35px 36px);display:flex;justify-content:space-between;align-items:flex-end;padding:0 40px 10px}
.hand{display:flex;gap:5px;align-items:flex-end;opacity:.62}
.hand i{display:block;width:24px;height:70px;border-radius:18px 18px 8px 8px;background:#d9a7a0;border:1px solid rgba(102,65,59,.18)}
.hand i:nth-child(2){height:82px}.hand i:nth-child(3){height:76px}.hand i:nth-child(4){height:60px}
.left-hand{transform:rotate(8deg)}.right-hand{transform:rotate(-8deg)}
.home-row-strip{position:absolute;left:50%;bottom:20px;transform:translateX(-50%);background:var(--green);color:#fff;border-radius:999px;padding:6px 14px;font-family:'JetBrains Mono';font-size:13px;font-weight:900;white-space:nowrap}

/* finger reminder bar */
.finger-reminder{background:rgba(217,138,43,.1);border:1px solid rgba(217,138,43,.3);border-radius:10px;padding:10px 14px;font-size:13px;color:var(--ink)}
.finger-reminder b{color:var(--green-d)}
.link-btn{background:none;border:none;color:var(--green);font-weight:700;font-size:13px;cursor:pointer;text-decoration:underline;padding:0;margin-left:4px}

/* practice options */
.practice-opts{display:flex;flex-wrap:wrap;gap:18px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px}
.opt-group{display:flex;align-items:center;gap:7px}
.opt-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-right:2px}
.opt-toggle,.opt{font-size:13px;font-weight:600;padding:6px 12px;border:1.5px solid var(--line);border-radius:8px;color:var(--muted);background:var(--paper);cursor:pointer}
.opt-toggle.on,.opt.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* difficulty selector note */
.diff-note{font-size:12px;color:var(--muted);margin:-6px 0 16px;padding-left:2px}
.pro-controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:-4px 0 12px}
.pro-controls label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--ink)}
.pro-controls input{accent-color:var(--green)}
.pro-controls select{min-height:34px;border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);font-weight:700;padding:4px 9px}

/* Phase 1A: standalone Learn Typing landing pages */
.learn-shell{background:#f7f9fb}
.learn-phase-hero{padding:46px 0 28px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#eef5fb 0%,#f7f9fb 100%)}
.learn-phase-hero .eyebrow{color:#225d91;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px}
.learn-phase-hero h1{font-size:clamp(30px,5vw,54px);line-height:1.08;font-weight:900;letter-spacing:0;max-width:820px;color:#10261f}
.learn-phase-hero p{font-size:18px;line-height:1.75;color:var(--muted);max-width:860px;margin-top:16px;text-align:justify}
.learn-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.learn-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;padding:30px 0}
.learn-choice-card,.learn-level-card,.learn-info-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:22px;box-shadow:0 8px 22px rgba(16,38,31,.05)}
.learn-choice-card h2,.learn-level-card h2,.learn-info-card h2{font-size:22px;font-weight:900;color:var(--ink);margin-bottom:10px}
.learn-choice-card p,.learn-level-card p,.learn-info-card p{font-size:15px;line-height:1.7;color:var(--muted);text-align:justify}
.learn-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.learn-card-mark{width:48px;height:48px;border-radius:8px;display:grid;place-items:center;background:#e7f0f8;color:#225d91;font-size:24px;font-weight:900}
.learn-status{display:inline-flex;align-items:center;min-height:28px;border-radius:999px;padding:4px 10px;background:rgba(31,107,79,.1);color:var(--green);font-size:12px;font-weight:900}
.learn-status.soon{background:#fff4df;color:#9a6500}
.feature-list{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.feature-list li{font-size:14px;color:var(--ink);line-height:1.55;position:relative;padding-left:20px}
.feature-list li::before{content:"";position:absolute;left:0;top:.58em;width:8px;height:8px;border-radius:2px;background:#225d91}
.learn-card-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.learn-compare{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;padding:8px 0 30px}
.learn-compare .learn-info-card:first-child{border-top:4px solid #225d91}
.learn-compare .learn-info-card:last-child{border-top:4px solid var(--green)}
.learn-breadcrumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.learn-breadcrumb a{font-weight:800;color:#225d91}
.level-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;padding:30px 0}
.learn-level-card{display:flex;flex-direction:column;min-height:100%}
.learn-level-card .learn-card-actions{margin-top:auto;padding-top:18px}
.coming-panel{background:#fff;border:1px solid var(--line);border-radius:8px;padding:28px;margin:30px 0;display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:center}
.coming-panel h2{font-size:28px;font-weight:900;margin-bottom:10px}
.coming-panel p{font-size:16px;line-height:1.75;color:var(--muted);text-align:justify}
.coming-visual{min-height:210px;border-radius:8px;border:1px dashed #9db7c2;background:linear-gradient(135deg,#eef5fb,#fff);display:grid;place-items:center;text-align:center;color:#225d91;font-weight:900;padding:20px}
.coming-visual span{display:block;font-size:42px;margin-bottom:10px}
.phase-note{font-size:13px;line-height:1.65;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px;margin:0 0 28px}
.learn-simple-nav{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.learn-simple-nav a{font-size:14px;font-weight:800;color:#eef6ff;padding:8px 10px;border-radius:8px}
.learn-simple-nav a:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none}

/* Phase 1B: English beginner course data preview and finger keyboard */
.learn-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:18px}
.learn-section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.15;font-weight:900;margin-top:8px;color:var(--ink)}
.learn-section-head p{max-width:430px;font-size:14px;line-height:1.65;color:var(--muted);text-align:right}
.beginner-course{padding-top:34px}
.beginner-course-layout{display:grid;grid-template-columns:minmax(230px,290px) 1fr;gap:18px;align-items:start}
.beginner-sidebar,.beginner-panel,.beginner-keyboard-shell{background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 22px rgba(16,38,31,.04)}
.beginner-sidebar{position:sticky;top:82px;padding:14px;max-height:calc(100vh - 110px);overflow:auto}
.beginner-lesson-list{display:grid;gap:6px}
.beginner-lesson-row{width:100%;display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:10px;text-align:left;border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:10px;color:var(--ink);transition:background .12s,border-color .12s,box-shadow .12s}
.beginner-lesson-row span:first-child{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:#e7f0f8;color:#225d91;font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:900}
.beginner-lesson-row b{font-size:13px;line-height:1.25}
.beginner-lesson-row small{font-size:11px;font-weight:800;color:var(--muted);white-space:nowrap}
.beginner-lesson-row:hover,.beginner-lesson-row.on{background:#f1f7fb;border-color:#225d91;box-shadow:0 0 0 2px rgba(34,93,145,.08)}
.beginner-lesson-row.on span:first-child{background:#225d91;color:#fff}
.beginner-panel{padding:24px;min-height:520px}
.beginner-panel h2{font-size:28px;line-height:1.2;font-weight:900;margin:12px 0 10px;color:var(--ink)}
.beginner-panel h3{font-size:16px;font-weight:900;margin:22px 0 8px;color:#225d91}
.beginner-panel p,.beginner-panel li{font-size:15px;line-height:1.75;color:var(--muted);text-align:justify}
.beginner-panel ul{margin:0 0 0 20px;display:grid;gap:6px}
.beginner-meta-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0}
.beginner-meta-grid div{border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:12px}
.beginner-meta-grid b{display:block;font-size:11px;line-height:1.2;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}
.beginner-meta-grid span{font-weight:900;color:var(--ink);font-size:14px}
.beginner-exercise-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.beginner-exercise-list li{border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:12px}
.beginner-exercise-list b{display:block;color:var(--ink);margin-bottom:8px}
.beginner-exercise-list code{display:block;background:#10261f;color:#f6f4ec;border-radius:8px;padding:12px;white-space:normal;font-family:'JetBrains Mono',monospace;font-size:14px;line-height:1.7}
.beginner-exercise-list small{display:block;margin-top:8px;font-size:12px;font-weight:800;color:#225d91}
.beginner-keyboard-section{padding-top:10px}
.beginner-keyboard-shell{padding:18px;margin-bottom:30px}
.beginner-keyboard-shell .hand-position-visual{max-width:760px;margin:0 auto 18px}
.learn-qwerty{display:grid;gap:7px;overflow-x:auto;padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--paper);user-select:none}
.learn-qwerty-row{display:flex;gap:7px;justify-content:center;min-width:max-content}
.learn-qwerty-key{position:relative;min-width:48px;height:52px;border:1px solid var(--line);border-bottom-width:4px;border-radius:8px;background:#fff;display:grid;place-items:center;color:var(--ink);font-family:'JetBrains Mono',monospace;font-weight:900;transition:transform .12s,box-shadow .12s,border-color .12s,background .12s}
.learn-qwerty-key::after{content:"";position:absolute;left:7px;right:7px;bottom:5px;height:4px;border-radius:999px;background:var(--finger-color);opacity:.75}
.learn-qwerty-key.is-home{box-shadow:inset 0 0 0 2px rgba(31,107,79,.18)}
.learn-qwerty-key.is-space{min-width:310px}
.learn-qwerty-key.is-active{background:color-mix(in srgb,var(--finger-color) 18%,#fff);border-color:var(--finger-color);transform:translateY(1px);box-shadow:0 0 0 3px rgba(16,38,31,.08)}
.learn-qwerty-key.is-correct{background:#e8f6ee;border-color:#1f6b4f}
.learn-qwerty-key.is-wrong{background:#fdebea;border-color:#c0392b}
.key-label{font-size:17px;line-height:1}
.key-shift{position:absolute;top:6px;left:8px;font-size:10px;color:var(--muted)}
.key-finger{position:absolute;right:6px;bottom:7px;font-size:9px;letter-spacing:.04em;color:var(--muted);z-index:1}
.learn-finger-legend{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:14px}
.learn-finger-item{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:7px 10px;font-size:12px;font-weight:800;color:var(--ink)}
.learn-finger-item i{width:12px;height:12px;border-radius:50%;background:var(--finger-color);box-shadow:0 0 0 3px color-mix(in srgb,var(--finger-color) 18%,transparent)}
.learn-finger-item small{font-size:10px;font-weight:900;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.beginner-exercise-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.beginner-exercise-tabs button{width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:var(--paper);font-weight:900;color:var(--ink)}
.beginner-exercise-tabs button.on{background:#225d91;border-color:#225d91;color:#fff}
.beginner-practice-card,.learn-practice-panel{border:1px solid var(--line);border-radius:8px;background:#fff;padding:18px;box-shadow:0 8px 22px rgba(16,38,31,.04)}
.learn-practice-panel{display:grid;grid-template-rows:auto auto minmax(150px,220px) auto auto;gap:0;max-height:calc(100vh - 128px);overflow:hidden}
.beginner-target,.learn-target-box{min-height:120px;border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:18px;font-family:'JetBrains Mono',monospace;font-size:22px;line-height:1.9;color:var(--ink);word-break:break-word}
.learn-target-box{max-height:220px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#225d91 transparent}
.learn-target-box::-webkit-scrollbar{width:8px}
.learn-target-box::-webkit-scrollbar-thumb{background:rgba(34,93,145,.45);border-radius:999px}
.beginner-target .ch,.learn-target-box .ch{border-radius:3px}
.beginner-target .ch.ok,.learn-target-box .ch.ok{color:var(--green)}
.beginner-target .ch.bad,.learn-target-box .ch.bad{background:#fdebea;color:#a3261d}
.beginner-target .ch.cur,.learn-target-box .ch.cur{background:#fff0cf;box-shadow:0 0 0 2px #e2aa4f}
#beginnerInput,#learnPracticeInput{width:100%;min-height:132px;margin-top:14px;border:1.5px solid var(--line);border-radius:8px;background:#fff;padding:16px;font-family:'JetBrains Mono',monospace;font-size:18px;line-height:1.8;color:var(--ink);resize:vertical}
#learnPracticeInput{min-height:112px;max-height:142px;resize:none}
#beginnerInput:focus,#learnPracticeInput:focus{outline:none;border-color:#225d91;box-shadow:0 0 0 3px rgba(34,93,145,.14)}
#beginnerInput:disabled,#learnPracticeInput:disabled{background:#f2f5f4;color:var(--muted)}
.beginner-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}
.beginner-stats div{border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:12px;text-align:center}
.beginner-stats b{display:block;font-family:'JetBrains Mono',monospace;font-size:24px;color:var(--green-d);line-height:1.2}
.beginner-stats span{display:block;margin-top:4px;font-size:11px;text-transform:uppercase;letter-spacing:.06em;font-weight:900;color:var(--muted)}
.beginner-actions{display:flex;gap:10px;flex-wrap:wrap}
.learn-practice-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:18px}
.learn-practice-head h2{font-size:clamp(24px,3vw,34px);font-weight:900;margin-top:8px}
.learn-practice-head p{font-size:15px;line-height:1.7;color:var(--muted);text-align:justify;max-width:680px}
.learn-practice-grid{display:grid;grid-template-columns:260px 1fr;gap:18px;align-items:start}
.learn-exercise-list{display:grid;gap:8px;position:sticky;top:82px}
.learn-exercise-list button{display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:center;text-align:left;border:1px solid var(--line);border-radius:8px;background:#fff;padding:10px;color:var(--ink)}
.learn-exercise-list span{width:28px;height:28px;border-radius:8px;background:#e7f0f8;color:#225d91;display:grid;place-items:center;font-family:'JetBrains Mono',monospace;font-weight:900}
.learn-exercise-list b{font-size:14px;line-height:1.25}
.learn-exercise-list button.on{border-color:#225d91;background:#f1f7fb;box-shadow:0 0 0 2px rgba(34,93,145,.08)}
.learn-exercise-list button.on span{background:#225d91;color:#fff}
.learn-controls{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px;border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:12px}
.learn-controls label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:900;color:var(--ink)}
.learn-controls input{accent-color:var(--green)}
.learn-controls select{min-height:34px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-weight:800;padding:4px 8px}
.learn-target-meta{font-size:13px;font-weight:900;color:#225d91;margin:0 0 8px;text-transform:uppercase;letter-spacing:.04em}

@media(max-width:680px){
  .learn-hero{padding:26px 0 16px}
  .learn-hero h1{max-width:100%}
  .learn-course-actions,.learn-mode-tabs{display:grid;grid-template-columns:1fr 1fr}
  .course-lang,.learn-mode-tab{width:100%;padding-left:10px;padding-right:10px}
  .intro-card{padding:20px}
  .practice-opts{gap:10px}
  .opt-group{width:100%;align-items:flex-start;flex-wrap:wrap}
  .drill-text{font-size:18px;line-height:1.7;padding:16px;min-height:72px}
  #learnInput{font-size:16px}
  .learn-meta{display:block}
  .lstats{margin:12px 0 0;display:grid;grid-template-columns:repeat(3,1fr)}
  .lstat{min-width:0;padding:7px 6px}
  .kb-key{min-width:32px;height:38px;font-size:12px}
  .kb-key.space{min-width:170px}
  .hand-keyboard{padding-left:20px;padding-right:20px}
  .hand i{width:19px}
  .learn-phase-hero{padding:34px 0 20px}
  .learn-phase-hero p{font-size:16px;text-align:left}
  .learn-simple-nav{margin-left:0;width:100%;gap:4px;padding-bottom:8px}
  .learn-simple-nav a{font-size:12px;padding:6px 8px;border:1px solid rgba(255,255,255,.18)}
  .learn-cards,.level-grid,.learn-compare{grid-template-columns:1fr;padding:20px 0}
  .coming-panel{grid-template-columns:1fr;padding:20px}
  .learn-choice-card,.learn-level-card,.learn-info-card{padding:18px}
  .learn-section-head{display:block}
  .learn-section-head p{text-align:left;margin-top:8px}
  .beginner-course-layout{grid-template-columns:1fr}
  .beginner-sidebar{position:static;max-height:360px}
  .beginner-panel{padding:18px;min-height:0}
  .beginner-panel h2{font-size:23px}
  .beginner-meta-grid{grid-template-columns:1fr 1fr}
  .beginner-lesson-row{grid-template-columns:32px 1fr}
  .beginner-lesson-row small{grid-column:2}
  .learn-qwerty{padding:10px}
  .learn-qwerty-key{min-width:39px;height:46px}
  .learn-qwerty-key.is-space{min-width:220px}
  .key-label{font-size:15px}
  .beginner-stats{grid-template-columns:1fr 1fr}
  .beginner-target,.learn-target-box{font-size:18px;line-height:1.7;padding:14px}
  .learn-practice-panel{max-height:none;overflow:visible}
  .learn-target-box{max-height:220px}
  #beginnerInput,#learnPracticeInput{font-size:16px;min-height:116px}
  .learn-practice-head{display:block}
  .learn-practice-head .btn{margin-top:12px}
  .learn-practice-grid{grid-template-columns:1fr}
  .learn-exercise-list{position:static}
}