:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#68738a;--line:#dfe5ef;--accent:#2d6cdf;--ok:#15803d;--shadow:0 8px 28px rgba(24,38,67,.08);font-size:18px}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;line-height:1.65}
body.dark{--bg:#111827;--card:#182235;--text:#f4f7fb;--muted:#b7c0cf;--line:#344054;--accent:#7aa2ff}
a{color:inherit;text-decoration:none}.topbar{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 4vw;background:var(--card);border-bottom:1px solid var(--line)}
.badge{margin-left:8px;padding:3px 8px;border-radius:999px;background:#e7efff;color:#244d9d;font-size:.75rem}.controls{display:flex;gap:6px;flex-wrap:wrap}
button,.primary{border:1px solid var(--line);background:var(--card);color:var(--text);padding:10px 14px;border-radius:12px;cursor:pointer;font-size:.95rem}.primary{display:inline-block;background:var(--accent);color:#fff;border:none;font-weight:700;padding:13px 18px}
.wrap{max-width:1100px;margin:0 auto;padding:26px}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;background:var(--card);padding:28px;border-radius:22px;box-shadow:var(--shadow);align-items:center}.hero h1{font-size:2rem;line-height:1.2;margin-top:0}.heroimg{width:100%;max-height:280px}
.progress{height:18px;border-radius:999px;background:var(--line);overflow:hidden}.progress span{display:block;height:100%;background:var(--accent)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:18px}.card{position:relative;background:var(--card);padding:20px;border-radius:18px;box-shadow:var(--shadow);display:flex;gap:16px;align-items:flex-start}.card h3{margin:0 0 6px}.card p{margin:0;color:var(--muted)}.icon{font-size:2rem}.big{font-size:3rem}.done{position:absolute;right:14px;top:14px;color:var(--ok);font-weight:800}
.pacebox,.admin,.lessonblock,.quiz{margin-top:22px;background:var(--card);padding:22px;border-radius:18px;box-shadow:var(--shadow)}.pacebuttons{display:flex;gap:10px;flex-wrap:wrap}.pacebuttons .selected{outline:3px solid var(--accent)}
.month-section{margin-top:30px}.meta{font-size:.8rem;color:var(--muted)}.lesson{max-width:850px}.lessonhero{display:flex;gap:18px;align-items:center;background:var(--card);padding:22px;border-radius:18px}.lessonhero h1{margin:0}.example{margin-top:14px;padding:14px;border-left:5px solid var(--accent);background:rgba(45,108,223,.08);border-radius:10px}.answer{display:block;width:100%;text-align:left;margin:8px 0}.answer.correct{outline:3px solid #22c55e}.answer.wrong{outline:3px solid #ef4444}.logout{display:inline-block;margin-left:10px;color:#b42318}
.loginwrap{min-height:100vh;display:grid;place-items:center;padding:20px}.loginbox{width:min(460px,100%);background:var(--card);padding:32px;border-radius:24px;box-shadow:var(--shadow);text-align:center}.loginicon{font-size:4rem}.password{width:100%;font-size:1.3rem;padding:14px;border:1px solid var(--line);border-radius:12px;margin:12px 0}.remember{display:flex;gap:10px;align-items:center;text-align:left;margin:10px 0 18px}.remember input{width:22px;height:22px}.full{width:100%}.error{color:#b42318;margin-bottom:10px}.small{font-size:.85rem;color:var(--muted)}
pre{white-space:pre-wrap}
@media(max-width:760px){:root{font-size:17px}.hero{grid-template-columns:1fr}.heroimg{max-height:200px}.grid{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}}

.lesson-image{display:block;width:100%;margin:22px 0;border-radius:20px;box-shadow:var(--shadow);background:var(--card)}
.block-explain{border-left:6px solid #2d6cdf}
.block-example{border-left:6px solid #16a34a}
.block-mistake{border-left:6px solid #dc2626}
.block-practice{border-left:6px solid #9333ea}
.lessonblock h2{margin-top:0}


.voice-simple{
  margin-top:22px;
  background:linear-gradient(135deg, rgba(45,108,223,.08), rgba(139,92,246,.08));
  padding:20px;
  border-radius:18px;
  box-shadow:var(--shadow);
}
.voice-simple h2{margin:0 0 4px}
.voice-simple p{margin:0 0 14px;color:var(--muted)}
.voice-actions{display:flex;gap:10px;flex-wrap:wrap}
.voice-status{margin-top:10px;font-weight:700;color:var(--muted)}

.practice-work{
  margin-top:18px;
  padding:18px;
  border-radius:16px;
  background:rgba(147,51,234,.06);
  border:1px solid rgba(147,51,234,.15);
}
.practice-work textarea{
  width:100%;
  min-height:150px;
  resize:vertical;
  margin-top:8px;
  padding:14px;
  font:inherit;
  color:var(--text);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:12px;
}
.practice-upload-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  margin-top:12px;
}
.photo-button{
  display:inline-block;
  padding:10px 14px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
  cursor:pointer;
  font-weight:700;
}
.photo-button input{display:none}
.save-practice{
  background:#2d6cdf;
  color:white;
  border:none;
  font-weight:700;
}
.practice-status{margin-top:10px;font-weight:700;color:var(--muted)}
.saved-practice-photo{margin-top:16px}
.saved-practice-photo img{
  display:block;
  max-width:100%;
  max-height:520px;
  border-radius:16px;
  box-shadow:var(--shadow);
  margin:8px 0 10px;
}


.practice-media{margin-top:14px}
.media-toggle{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 16px;
  font-weight:700;
}
.media-menu{
  display:none;
  margin-top:12px;
  padding:12px;
  border-radius:16px;
  background:rgba(45,108,223,.06);
  border:1px solid rgba(45,108,223,.14);
}
.media-menu.open{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}
.media-option{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:68px;
  text-align:center;
  padding:12px;
  border-radius:14px;
  background:var(--card);
  border:1px solid var(--line);
  font-weight:700;
  cursor:pointer;
}
.media-option input{display:none}
.practice-preview{
  margin-top:14px;
  padding:14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
}
.practice-preview img{
  display:block;
  max-width:100%;
  max-height:520px;
  border-radius:14px;
  margin-top:8px;
  box-shadow:var(--shadow);
}
.practice-preview-actions{
  display:flex;
  gap:10px;
  margin-top:10px;
  flex-wrap:wrap;
}
.practice-actions-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  margin-top:14px;
}
@media(max-width:760px){
  .media-menu.open{grid-template-columns:1fr}
  .media-option{min-height:60px}
}


.ai-check-button{
  background:linear-gradient(135deg,#6d5dfc,#2d6cdf);
  color:white;
  border:none;
  font-weight:800;
}
.ai-practice-result{
  margin-top:18px;
  padding:18px;
  border-radius:18px;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.ai-score-row{
  display:grid;
  grid-template-columns:100px 1fr;
  gap:16px;
  align-items:center;
}
.ai-score-circle{
  width:92px;
  height:92px;
  display:grid;
  place-items:center;
  border-radius:50%;
  font-size:1.55rem;
  font-weight:900;
  background:linear-gradient(135deg,#dbe7ff,#eee9ff);
  color:#244d9d;
  border:5px solid #7aa2ff;
}
.ai-practice-result h3{margin:0 0 6px}
.ai-practice-result p{margin:.35rem 0}
.ai-feedback-good,.ai-feedback-missing,.ai-feedback-example,.ai-feedback-advice{
  margin-top:12px;
  padding:13px 15px;
  border-radius:14px;
}
.ai-feedback-good{background:rgba(34,197,94,.08)}
.ai-feedback-missing{background:rgba(245,158,11,.10)}
.ai-feedback-example{background:rgba(45,108,223,.08)}
.ai-feedback-advice{background:rgba(147,51,234,.07)}
.ai-practice-result ul{margin:.45rem 0 0 1.25rem;padding:0}
@media(max-width:620px){
  .ai-score-row{grid-template-columns:1fr}
  .ai-score-circle{width:82px;height:82px}
}


.lesson-image,
.example-illustration,
.practice-lesson-image{
  display:block;
  width:100%;
  height:auto;
  margin:18px 0;
  border-radius:20px;
  background:var(--card);
  box-shadow:var(--shadow);
}
.example-illustration{margin-top:14px}
.practice-lesson-image{margin-bottom:16px}


.month-cover-wrap{
  margin-top:16px;
}
.month-cover{
  display:block;
  width:100%;
  border-radius:24px;
  box-shadow:var(--shadow);
  background:var(--card);
  margin-bottom:14px;
}
.lesson-image,
.example-illustration,
.practice-lesson-image{
  display:block;
  width:100%;
  height:auto;
  margin:18px 0;
  border-radius:20px;
  background:var(--card);
  box-shadow:var(--shadow);
}
.example-illustration,
.practice-lesson-image{
  min-height:0;
}