:root{color-scheme:light;--bg:#f3f6f5;--card:#fff;--ink:#172b2d;--mut:#687a7b;--line:#dce5e2;--acc:#0f766e;--acc2:#dff4ef;--shadow:0 8px 24px #0b393014} @media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#101b1d;--card:#192729;--ink:#edf5f3;--mut:#9aacab;--line:#2b4040;--acc:#2dd4bf;--acc2:#183b37;--shadow:0 8px 24px #0002}}:root[data-theme=dark]{color-scheme:dark;--bg:#101b1d;--card:#192729;--ink:#edf5f3;--mut:#9aacab;--line:#2b4040;--acc:#2dd4bf;--acc2:#183b37}:root[data-theme=light]{color-scheme:light;--bg:#f3f6f5;--card:#fff;--ink:#172b2d;--mut:#687a7b;--line:#dce5e2;--acc:#0f766e;--acc2:#dff4ef}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);font-family:system-ui,'Segoe UI',sans-serif;margin:0;line-height:1.65}button{font:inherit;color:inherit;cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid var(--acc);outline-offset:3px}a{color:var(--acc)}.topbar{max-width:1200px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:20px 18px;gap:12px}.brand{text-decoration:none;font-size:1.1rem;font-weight:800;color:var(--ink)}.topbar nav{display:flex;gap:18px;flex-wrap:wrap}.topbar nav a{text-decoration:none;font-size:.9rem}main{max-width:1200px;margin:auto;padding:10px 18px 50px}.hero-card{background:linear-gradient(115deg,#0c766e,#155e75);color:#fff;padding:28px;border-radius:22px}.hero-card h1{font-size:clamp(1.6rem,3vw,2.4rem);margin:4px 0}.hero-card p{color:#e3f5f2}.eyebrow{font-size:.77rem;font-weight:800;letter-spacing:.07em;color:var(--acc)}.hero-card .eyebrow{color:#bbf7e9}.mini-stats{display:flex;flex-wrap:wrap;gap:10px}.mini-stats span{background:#ffffff22;border:1px solid #ffffff44;border-radius:99px;padding:5px 13px;font-size:.83rem}.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}.level-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:17px;display:grid;gap:3px;text-align:right;box-shadow:var(--shadow)}.level-card strong{font-size:1.4rem;color:var(--acc)}.level-card span,.level-card small{color:var(--mut)}.level-card.active{border:2px solid var(--acc)}.level-card.locked{opacity:.65}h2{font-size:1.2rem}.days{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px;margin-bottom:25px}.day{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 0}.day.active{border:2px solid var(--acc)}.day.completed{background:var(--acc2);color:var(--acc)}.day.locked{opacity:.5}.day-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.day-heading p,.day-heading span{color:var(--mut);font-size:.87rem}.learning-layout{display:grid;grid-template-columns:minmax(210px,330px) minmax(0,1fr);gap:15px;align-items:start}.verb-list{display:grid;gap:6px}.verb-item{border:1px solid var(--line);background:var(--card);border-radius:12px;display:flex;gap:12px;align-items:center;text-align:right;padding:10px 12px;min-width:0}.verb-item.selected{border:2px solid var(--acc);background:var(--acc2)}.verb-number{color:var(--mut);font-size:.85rem}.verb-item span:nth-child(2){flex:1;min-width:0}.verb-item strong,.verb-item small{display:block}.verb-item strong{font-size:1.06rem}.verb-item small{color:var(--mut);font-size:.82rem}.verb-detail{background:var(--card);border:1px solid var(--line);border-radius:17px;padding:20px;box-shadow:var(--shadow);min-width:0}.detail-head{display:flex;justify-content:space-between;gap:15px;align-items:center}.detail-head h2{font-size:2rem;margin:0;text-align:right}.detail-head p{color:var(--mut);margin:0}.speak,.detail-footer button,.tense button{border:1px solid var(--line);border-radius:10px;background:var(--card);padding:7px 11px}.tense{margin:20px 0}.tense h3{margin:0 0 9px;font-size:1.03rem}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:center}td,th{padding:10px;border-bottom:1px solid var(--line)}th{background:var(--acc2)}.notice{background:var(--acc2);border-radius:12px;padding:15px}.notice p,.hint{color:var(--mut)}.detail-footer{border-top:1px solid var(--line);padding-top:14px;display:flex;gap:15px;flex-wrap:wrap}.day-actions{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin:20px 0}.day-actions span,.footnote{color:var(--mut);font-size:.85rem}.primary{background:var(--acc);color:var(--bg);border:0;border-radius:11px;padding:12px 18px;font-weight:800}.quiz-panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:25px;max-width:800px;margin:15px auto;text-align:center}.quiz-word{font-size:2.5rem}.quiz-progress{color:var(--mut)}.progress-track{height:9px;background:var(--line);border-radius:99px;overflow:hidden;margin:14px 0}.progress-track i{display:block;background:var(--acc);height:100%}.quiz-options{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:20px 0}.quiz-options button{padding:14px;border:1px solid var(--line);background:var(--bg);border-radius:10px}.quiz-options button.right{background:#dcfce7;color:#14532d}.quiz-options button.wrong{background:#fee2e2;color:#991b1b}.feedback{padding:12px;border-radius:12px}.feedback.good{background:#dcfce7;color:#14532d}.feedback.bad{background:#fee2e2;color:#991b1b}.score{font-size:3rem;font-weight:900;color:var(--acc)}.error-list{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.error-list span{background:var(--acc2);border-radius:8px;padding:5px 10px}footer{text-align:center;color:var(--mut);padding:20px}@media(max-width:750px){.learning-layout{grid-template-columns:1fr}.verb-list{grid-template-columns:repeat(2,minmax(0,1fr))}.days{grid-template-columns:repeat(6,1fr)}.topbar{align-items:flex-start;flex-direction:column}}@media(max-width:460px){.levels{gap:5px}.level-card{padding:9px}.level-card strong{font-size:1.15rem}.level-card span,.level-card small{font-size:.7rem}.verb-list{grid-template-columns:1fr}.quiz-options{grid-template-columns:1fr}.days{grid-template-columns:repeat(5,1fr)}.hero-card{padding:20px}.detail-head{flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.quiz-pronoun{font-size:1.25rem;font-weight:700;direction:ltr}.quiz-options button:disabled{cursor:default;opacity:1}.quiz-options button:focus-visible{outline:3px solid var(--acc);outline-offset:2px}

/* V7: responsive error-review workspace */
.review-wrap{max-width:1100px;margin:0 auto;padding:22px 16px 65px}.review-panel{margin-top:20px}.review-controls{display:flex;gap:14px;flex-wrap:wrap;margin:20px 0}.review-controls label{display:grid;gap:7px;flex:1;min-width:200px}.review-controls input,.review-controls select{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:12px;border-radius:10px;font:inherit}.review-list{display:grid;gap:12px}.review-item{border:1px solid var(--line);border-radius:12px;padding:15px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.review-item strong{font-size:1.1rem}.review-item p{opacity:.75;margin:7px 0 0}.review-actions{display:flex;gap:8px;flex-wrap:wrap}.review-actions button,.review-actions a{font:inherit;text-decoration:none;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:10px;padding:9px 12px;cursor:pointer}@media(max-width:600px){.review-item{display:block}.review-actions{margin-top:14px}.review-actions>*{flex:1;text-align:center}.review-wrap{padding:12px 10px 45px}}

/* Release: accessible mobile controls */
@media(max-width:680px){.learning-layout{display:block}.verb-list{max-height:320px;overflow-y:auto}.verb-detail{margin-top:14px}.days{grid-template-columns:repeat(5,minmax(0,1fr))}.day{min-width:0}.levels{grid-template-columns:repeat(3,minmax(0,1fr))}.quiz-options button{min-height:44px;white-space:normal}.table-scroll{overflow-x:auto}.hero-card h1{font-size:clamp(1.4rem,6vw,2.2rem)}}
button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #0d9488;outline-offset:3px}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* Keyboard navigation and small-screen usability */
:where(a,button,input,select,textarea,summary):focus-visible{outline:3px solid #2563eb;outline-offset:3px}
@media(max-width:520px){.topbar{flex-wrap:wrap;gap:10px}.topbar nav{display:flex;flex-wrap:wrap;gap:9px}.day-actions{display:flex;flex-wrap:wrap;gap:8px}.day-actions button{min-height:42px}}

/* During Goethe mock exams, show a neutral selection, not a green "correct" answer. */
.quiz-options button.selected-answer{background:var(--acc2);border:2px solid var(--acc);font-weight:700}

/* Accounts: optional cloud profile and gentle sync notice */
.cloud-account-link{display:inline-flex;align-items:center;padding:8px 12px;border:1px solid var(--line);border-radius:12px;color:var(--ink);text-decoration:none;background:var(--card,var(--paper,#fff));font-weight:650;white-space:nowrap}
.cloud-fresh-notice{position:fixed;bottom:16px;left:16px;right:auto;max-width:min(430px,calc(100vw - 32px));z-index:1000;padding:13px 16px;background:var(--card,var(--paper,#fff));color:var(--ink);border:1px solid var(--line);border-radius:13px;box-shadow:0 8px 32px rgba(0,0,0,.15);line-height:1.7}
.cloud-fresh-notice a{color:var(--acc,var(--accent));font-weight:800;margin-inline-start:7px}

/* V50: writable-conjugation exercises and accessible mode toggle. */
.quiz-mode-wrap{display:flex;align-items:center;flex-wrap:wrap;gap:9px;max-width:100%}
.quiz-mode-wrap button{border:1px solid var(--line);background:var(--card);color:var(--ink);padding:10px 14px;border-radius:10px;min-height:44px}
.quiz-mode-wrap button.chosen-mode{background:var(--acc2);border:2px solid var(--acc);font-weight:800}
.typed-form{display:grid;gap:12px;margin:20px auto;max-width:500px;text-align:right}
.typed-form input{width:100%;min-width:0;border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--bg);color:var(--ink);font:inherit;text-align:left}
.typed-form button{justify-self:start}
@media(max-width:520px){.quiz-panel{padding:16px}.quiz-word{font-size:1.9rem}.quiz-mode-wrap{width:100%}.quiz-mode-wrap>span{width:100%}}

.german-chars{display:flex;gap:9px;flex-wrap:wrap;justify-content:flex-end}
.german-chars button{border:1px solid var(--line);border-radius:10px;min-width:44px;min-height:44px;background:var(--card);color:var(--ink);font-size:1.12rem;cursor:pointer}
.german-chars button:focus-visible{outline:3px solid var(--acc);outline-offset:2px}


/* V54: calm, readable academy navigation across desktop and mobile. */
.topbar{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;gap:18px;padding:18px 20px;
  border-bottom:1px solid var(--line);min-width:0
}
.topbar .brand{display:inline-flex;align-items:center;gap:9px;flex-shrink:0;
  font-weight:800;font-size:1.14rem;line-height:1.5;color:var(--ink);
  text-decoration:none;letter-spacing:0}
.topbar nav{display:flex;align-items:center;justify-content:flex-end;gap:8px;
  flex-wrap:wrap;min-width:0;margin:0}
.topbar nav a{
  display:inline-flex;justify-content:center;align-items:center;gap:5px;
  min-height:41px;padding:7px 13px;border:1px solid var(--line);
  border-radius:13px;background:var(--card);color:var(--ink);
  font:inherit;font-size:.86rem;font-weight:650;line-height:1.4;
  text-align:center;white-space:nowrap;text-decoration:none;
  transition:background-color .18s,border-color .18s,transform .18s
}
.topbar nav a:hover,.topbar nav a:focus-visible{
  background:var(--acc2);border-color:var(--acc);color:var(--ink)
}
.topbar nav a:active{transform:scale(.98)}
.topbar nav a[aria-current="page"]{
  background:var(--acc2);border-color:var(--acc);color:var(--acc);font-weight:800
}
@media(max-width:820px){
  .topbar{display:flex;flex-direction:column;align-items:stretch;gap:11px;
    padding:15px 14px 12px;margin:0 auto;max-width:100%;overflow:hidden}
  .topbar .brand{font-size:1.22rem;padding:0 2px 4px;align-self:flex-start}
  .topbar nav{
    direction:rtl;display:grid;grid-template-rows:repeat(2,minmax(42px,auto));
    grid-auto-flow:column;grid-auto-columns:max-content;justify-content:start;
    gap:8px;max-width:100%;overflow-x:auto;overflow-y:hidden;
    padding:2px 2px 12px;scroll-snap-type:x proximity;
    scrollbar-width:thin;scrollbar-color:var(--line) transparent;
    overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch
  }
  .topbar nav a{scroll-snap-align:start;min-height:43px;padding:8px 13px;
    border-radius:12px;font-size:.85rem;background:var(--card)}
}
@media(prefers-reduced-motion:reduce){.topbar nav a{transition:none}}

/* V79: friendly, accessible past-tense micro-exercises. */
.past-drill{margin:20px 0;padding:17px;border:1px solid var(--line);border-radius:14px;background:var(--acc2)}
.past-drill h3{margin:0 0 8px;font-size:1.1rem}
.past-drill .hint{margin:0 0 12px}
.past-drill-form{display:flex;gap:9px;flex-wrap:wrap;align-items:end;margin-top:14px}
.past-drill-form label{display:flex;flex:1 1 240px;min-width:0;flex-direction:column;gap:6px;font-weight:700}
.past-drill-form input{width:100%;min-height:44px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:inherit;text-align:left}
.past-drill-form button{min-height:44px;padding:9px 14px;border-radius:10px;border:1px solid var(--acc);color:var(--acc);background:var(--card);font-weight:700}
.past-result{width:100%;margin:0;font-weight:700}
.past-result.good{color:var(--acc)}
.past-result.bad{color:var(--ink)}
.past-drill-form input:focus-visible,.past-drill-form button:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
@media(max-width:520px){.past-drill{padding:12px}.past-drill-form button{width:100%}}