:root{
  color-scheme:dark light;
  --bg:#0f1220;
  --card:#1a1f36;
  --text:#f2f3f7;
  --muted:#9498b3;
  --accent:#4f7cff;
  --good:#2ecc71;
  --bad:#ff5c5c;
  --radius:18px;
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#f4f5fa;
    --card:#ffffff;
    --text:#1a1f36;
    --muted:#666b8a;
  }
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  display:flex;
  flex-direction:column;
  min-height:100vh;
  overscroll-behavior:none;
}
#app-title{
  text-align:center;
  font-size:13px;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--muted);
  padding:14px 18px 0;
}
#pro-badge{
  display:block;
  align-self:center;
  margin:8px auto 0;
  font-size:12px;
  font-weight:700;
  padding:4px 14px;
  border-radius:99px;
  background:var(--accent);
  color:#fff;
}
#pro-badge.hidden{display:none;}
#install-btn{
  display:block;
  align-self:center;
  margin:10px auto 0;
  font-family:inherit;
  font-size:13px;
  font-weight:700;
  padding:9px 18px;
  border-radius:99px;
  border:2px solid var(--accent);
  background:transparent;
  color:var(--accent);
  cursor:pointer;
}
#install-btn.hidden{display:none;}
#install-btn:active{transform:scale(.96);}
#ios-install-hint{
  align-self:center;
  max-width:360px;
  margin:10px auto 0;
  padding:8px 14px;
  font-size:12px;
  line-height:1.5;
  color:var(--muted);
  text-align:center;
}
#ios-install-hint.hidden{display:none;}
#ios-install-hint b{color:var(--text);}
#voice-hint{
  align-self:center;
  max-width:360px;
  margin:10px auto 0;
  padding:8px 30px 8px 14px;
  font-size:12px;
  line-height:1.5;
  color:var(--muted);
  text-align:center;
  position:relative;
}
#voice-hint.hidden{display:none;}
#voice-hint b{color:var(--text);}
#voice-hint-close{
  position:absolute;
  top:4px;
  right:6px;
  background:none;
  border:none;
  color:var(--muted);
  cursor:pointer;
  font-size:13px;
  padding:4px 6px;
  line-height:1;
}
#topbar{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:10px 18px 16px;
}
#topbar.hidden, #app-title.hidden{visibility:hidden;}
#progress-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
#progress-label{
  font-weight:600;
  font-size:12px;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.04em;
  white-space:nowrap;
}
#progress-track{
  height:8px;
  background:rgba(128,128,128,.25);
  border-radius:99px;
  overflow:hidden;
}
#progress-fill{
  height:100%;
  width:0%;
  background:var(--accent);
  border-radius:99px;
  transition:width .3s ease;
}
#score-chip{
  font-weight:600;
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
}
main#quiz-screen{
  flex:1;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
  padding-bottom:96px;
}
#card{
  width:100%;
  max-width:440px;
  background:var(--card);
  border-radius:var(--radius);
  padding:36px 26px;
  box-shadow:0 10px 30px rgba(0,0,0,.15);
  text-align:center;
  animation:cardIn .28s ease;
}
@keyframes cardIn{
  from{opacity:0; transform:translateY(10px) scale(.98);}
  to{opacity:1; transform:translateY(0) scale(1);}
}
#prompt-label{
  margin:0 0 6px;
  color:var(--muted);
  font-size:14px;
  text-transform:uppercase;
  letter-spacing:.06em;
}
#prompt-word{
  margin:0;
  font-size:clamp(28px,7vw,38px);
  font-weight:700;
}
.gender-der{color:#4f7cff;}
.gender-die{color:#e85fc0;}
.gender-das{color:#34c759;}
#prompt-fon{
  margin:6px 0 14px;
  color:var(--muted);
  font-size:14px;
  font-style:italic;
  min-height:18px;
}
#audio-btn{
  display:block;
  margin:0 auto 26px;
  width:46px;
  height:46px;
  border-radius:50%;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  font-size:19px;
  line-height:1;
  cursor:pointer;
  color:var(--text);
  transition:transform .12s ease, border-color .15s ease;
}
#audio-btn:active{transform:scale(.92);}
#audio-btn.playing{border-color:var(--accent);}
#audio-btn.locked{opacity:.32; cursor:not-allowed;}
#hint-box{
  margin-top:16px;
  padding:14px 16px;
  border-radius:14px;
  background:rgba(255,92,92,.1);
  border:1px solid rgba(255,92,92,.3);
  text-align:left;
  animation:barIn .2s ease;
}
#hint-box.hidden{display:none;}
#hint-meaning{
  margin:0 0 6px;
  font-weight:700;
  font-size:15px;
}
#hint-ex-row{
  display:flex;
  align-items:center;
  gap:8px;
}
#hint-ex-text{
  flex:1;
  min-width:0;
}
#hint-example-de{
  margin:0;
  font-size:14px;
  font-style:italic;
}
#hint-ex-fon{
  display:block;
  font-size:12px;
  color:var(--muted);
  font-style:italic;
}
#hint-audio-btn{
  flex:none;
  width:32px;
  height:32px;
  border-radius:50%;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  font-size:14px;
  line-height:1;
  cursor:pointer;
  color:var(--text);
}
#hint-audio-btn:active{transform:scale(.9);}
#hint-audio-btn.playing{border-color:var(--accent);}
#hint-example-es{
  margin:2px 0 0;
  font-size:13px;
  color:var(--muted);
}
#write-practice.hidden{display:none;}
#write-practice{
  margin-top:24px;
  text-align:left;
}
#write-practice label{
  display:block;
  margin-bottom:8px;
  font-size:13px;
  font-weight:600;
  color:var(--muted);
}
#write-practice textarea{
  width:100%;
  font-family:inherit;
  font-size:16px;
  padding:12px 14px;
  border-radius:12px;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  color:var(--text);
  resize:vertical;
  min-height:60px;
}
#write-practice textarea:focus{
  outline:none;
  border-color:var(--accent);
}
#options{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.option-btn{
  font-family:inherit;
  font-size:17px;
  font-weight:500;
  padding:16px 18px;
  border-radius:14px;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  color:var(--text);
  cursor:pointer;
  transition:transform .12s ease, border-color .15s ease, background .15s ease;
  text-align:left;
}
.option-btn:active{transform:scale(.97);}
.option-btn:disabled{cursor:default;}
.option-btn.correct{
  border-color:var(--good);
  background:rgba(46,204,113,.15);
}
.option-btn.wrong{
  border-color:var(--bad);
  background:rgba(255,92,92,.15);
}
#next-bar{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  padding:14px 16px calc(14px + env(safe-area-inset-bottom));
  background:var(--bg);
  border-top:1px solid rgba(128,128,128,.2);
  display:flex;
  justify-content:center;
  animation:barIn .22s ease;
}
#next-bar.hidden{display:none;}
@keyframes barIn{
  from{opacity:0; transform:translateY(8px);}
  to{opacity:1; transform:translateY(0);}
}
#next-btn{
  width:100%;
  max-width:440px;
  font-family:inherit;
  font-size:16px;
  font-weight:700;
  padding:16px;
  border:none;
  border-radius:14px;
  background:var(--accent);
  color:white;
  cursor:pointer;
}
#next-btn:active{transform:scale(.97);}
#result-screen{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:32px 20px;
  text-align:center;
}
#result-screen.hidden{display:none;}
#quiz-screen.hidden{display:none;}
#result-title{margin:0; font-size:26px;}
#result-score{margin:0; font-size:44px; font-weight:800; color:var(--accent);}
#weak-words{
  max-width:420px;
  width:100%;
  color:var(--muted);
  font-size:14px;
  line-height:1.6;
}
#weak-words b{color:var(--text);}
.srs-next{font-size:12.5px; color:var(--accent); font-weight:600;}
#restart-btn{
  margin-top:10px;
  font-family:inherit;
  font-size:16px;
  font-weight:700;
  padding:14px 34px;
  border:none;
  border-radius:14px;
  background:var(--accent);
  color:white;
  cursor:pointer;
}
#restart-btn:active{transform:scale(.97);}

#check-btn{
  margin-top:10px;
  width:100%;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  padding:11px;
  border:none;
  border-radius:12px;
  background:var(--accent);
  color:white;
  cursor:pointer;
}
#check-btn:active{transform:scale(.97);}
#check-btn:disabled{opacity:.6;cursor:default;}
#check-result{
  margin-top:10px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(128,128,128,.08);
  border:1px solid rgba(128,128,128,.2);
  font-size:13px;
  line-height:1.5;
}
#check-result.hidden{display:none;}
#check-result p{margin:0 0 4px;}
#check-result p:last-child{margin-bottom:0;}
#check-status.status-red{color:var(--bad); font-weight:700;}
#check-status.status-yellow{color:#e0a300; font-weight:700;}
#check-status.status-green{color:var(--good); font-weight:700;}
#check-status.status-green-strong{color:#19b361; font-weight:800;}
#check-corrected{font-style:italic;}
#check-native-block{margin:2px 0;}
#check-native{font-style:italic; margin:0;}
#check-native-fon{display:block; font-size:12px; color:var(--muted); font-style:italic;}
#check-native-es{color:var(--muted); font-size:12.5px; margin:2px 0 0;}
#check-explanation{color:var(--muted);}

#examples-box{margin-top:16px;}
#examples-box.hidden{display:none;}
#examples-toggle{
  width:100%;
  text-align:left;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  padding:12px 14px;
  border-radius:12px;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  color:var(--text);
  cursor:pointer;
}
#examples-panel{
  margin-top:8px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(128,128,128,.08);
  border:1px solid rgba(128,128,128,.2);
  font-size:13px;
}
#examples-panel.hidden{display:none;}
#examples-loading{padding:6px 0; color:var(--muted); font-size:13px;}
#examples-loading.hidden{display:none;}
.ex-item{margin-bottom:12px; text-align:left;}
.ex-item:last-child{margin-bottom:0;}
.ex-item-row{display:flex; align-items:center; gap:8px;}
.ex-item-de{margin:0; font-size:14px; font-style:italic; font-weight:600; flex:1; min-width:0;}
.ex-item-fon{display:block; font-size:12px; color:var(--muted); font-style:italic;}
.ex-item-es{margin:2px 0 0; font-size:13px; color:var(--muted);}
.ex-audio-btn{
  flex:none;
  width:30px;
  height:30px;
  border-radius:50%;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  font-size:13px;
  line-height:1;
  cursor:pointer;
  color:var(--text);
}
.ex-audio-btn:active{transform:scale(.9);}
.ex-audio-btn.playing{border-color:var(--accent);}

#pronounce-box{margin-top:16px;}
#pronounce-box.hidden{display:none;}
#pronounce-target-word{margin:0 0 8px; font-size:14px; color:var(--muted); text-align:center;}
#pronounce-target-word b{color:var(--text); font-size:16px;}
#pronounce-record-btn{
  width:100%;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  padding:12px 14px;
  border-radius:12px;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  color:var(--text);
  cursor:pointer;
  transition:border-color .15s ease, background .15s ease;
}
#pronounce-record-btn.recording{
  border-color:var(--bad);
  background:rgba(255,92,92,.1);
  color:var(--bad);
  animation:recPulse 1.2s ease-in-out infinite;
}
@keyframes recPulse{0%,100%{opacity:1;}50%{opacity:.6;}}
#pronounce-loading{padding:8px 0 0; color:var(--muted); font-size:13px;}
#pronounce-loading.hidden{display:none;}
#pronounce-result{
  margin-top:8px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(128,128,128,.08);
  border:1px solid rgba(128,128,128,.2);
  font-size:13px;
  text-align:left;
}
#pronounce-result.hidden{display:none;}
#pronounce-result p{margin:0 0 4px;}
#pronounce-result p:last-child{margin-bottom:0;}
.pronounce-tier{font-weight:700; font-size:14px;}
.pronounce-tier.status-red{color:var(--bad);}
.pronounce-tier.status-green{color:var(--good);}
.pronounce-target{color:var(--muted); font-size:12.5px;}

#conjugate-box{margin-top:16px;}
#conjugate-box.hidden{display:none;}
#decline-box{margin-top:16px;}
#decline-box.hidden{display:none;}
#conjugate-toggle{
  width:100%;
  text-align:left;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  padding:12px 14px;
  border-radius:12px;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  color:var(--text);
  cursor:pointer;
}
#conjugate-panel{
  margin-top:8px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(128,128,128,.08);
  border:1px solid rgba(128,128,128,.2);
  font-size:13px;
}
#conjugate-panel.hidden{display:none;}
#conjugate-loading{padding:6px 0; color:var(--muted); font-size:13px;}
#conjugate-loading.hidden{display:none;}
#decline-toggle{
  width:100%;
  text-align:left;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  padding:12px 14px;
  border-radius:12px;
  border:2px solid rgba(128,128,128,.25);
  background:transparent;
  color:var(--text);
  cursor:pointer;
}
#decline-panel{
  margin-top:8px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(128,128,128,.08);
  border:1px solid rgba(128,128,128,.2);
  font-size:13px;
}
#decline-panel.hidden{display:none;}
#decline-loading{padding:6px 0; color:var(--muted); font-size:13px;}
#decline-loading.hidden{display:none;}
.conj-tense{margin-bottom:10px;}
.conj-tense:last-child{margin-bottom:0;}
.conj-tense-name{font-weight:700; margin-bottom:4px; text-transform:capitalize;}
.conj-row{display:flex; justify-content:space-between; gap:8px; padding:2px 0; color:var(--muted);}
.conj-row b{color:var(--text); font-weight:600;}
.conj-example{margin-bottom:8px; text-align:left;}
.conj-example:last-child{margin-bottom:0;}
.conj-example-de{margin:0; font-size:13px; font-style:italic; color:var(--text);}
.conj-example-fon{display:block; font-size:11.5px; color:var(--muted); font-style:italic;}
.conj-example-es{margin:1px 0 0; font-size:12px; color:var(--muted);}

.info-modal{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.55);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:20px;
  z-index:100;
}
.info-modal.hidden{display:none;}
.info-modal-box{
  width:100%;
  max-width:360px;
  background:var(--card);
  border-radius:var(--radius);
  padding:26px 24px;
  text-align:center;
  box-shadow:0 20px 50px rgba(0,0,0,.35);
}
.info-modal-title{margin:0 0 10px; font-size:18px; font-weight:800;}
.info-modal-text{margin:0 0 14px; font-size:14px; color:var(--text);}
.info-modal-list{
  list-style:none;
  margin:0 0 20px;
  padding:0;
  text-align:left;
  font-size:13.5px;
  color:var(--text);
  display:flex;
  flex-direction:column;
  gap:8px;
}
.info-modal-list li{padding-left:18px; position:relative;}
.info-modal-list li::before{content:"\2022"; position:absolute; left:2px; color:var(--accent);}
.info-modal-close{
  width:100%;
  font-family:inherit;
  font-size:15px;
  font-weight:700;
  padding:14px;
  border-radius:12px;
  border:none;
  background:var(--accent);
  color:#fff;
  cursor:pointer;
}
.info-modal-close:active{transform:scale(.97);}
#upgrade-modal{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.55);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:20px;
  z-index:100;
}
#upgrade-modal.hidden{display:none;}
#upgrade-modal-box{
  width:100%;
  max-width:360px;
  background:var(--card);
  border-radius:var(--radius);
  padding:26px 24px;
  text-align:center;
  box-shadow:0 20px 50px rgba(0,0,0,.35);
}
#upgrade-modal-title{margin:0 0 8px; font-size:18px; font-weight:800;}
#upgrade-modal-text{margin:0 0 6px; font-size:14px; color:var(--text);}
#upgrade-modal-sub{margin:0 0 16px; font-size:13px; color:var(--muted);}
#upgrade-modal-cta{
  display:block;
  font-family:inherit;
  font-size:15px;
  font-weight:700;
  padding:14px;
  border-radius:12px;
  background:var(--accent);
  color:white;
  text-decoration:none;
  margin-bottom:10px;
}
#upgrade-modal-cta:active{transform:scale(.97);}
#restore-pro-link{
  display:block;
  margin-top:14px;
  font-size:12px;
  color:var(--muted);
  text-decoration:underline;
}
#restore-pro-form{margin-top:12px;}
#restore-pro-form.hidden{display:none;}
#restore-pro-email{
  width:100%;
  font-family:inherit;
  font-size:13px;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border, rgba(255,255,255,.15));
  background:transparent;
  color:var(--text);
  margin-bottom:8px;
  box-sizing:border-box;
}
#restore-pro-submit{
  width:100%;
  font-family:inherit;
  font-size:13px;
  font-weight:700;
  padding:10px;
  border-radius:10px;
  border:none;
  background:var(--accent);
  color:#fff;
  cursor:pointer;
}
#restore-pro-status{margin:8px 0 0; font-size:12px; color:var(--muted);}
#upgrade-modal-close{
  width:100%;
  font-family:inherit;
  font-size:13px;
  font-weight:600;
  padding:10px;
  border:none;
  background:transparent;
  color:var(--muted);
  cursor:pointer;
}