:root{
  --bg:#0b0f14;
  --panel:#101826;
  --card:#0f1724;
  --text:#e8eef6;
  --muted:#9fb0c3;
  --accent:#5f82e8;
  --accent-border:rgba(95,130,232,.42);
  --accent-soft:rgba(95,130,232,.12);
  --accent-strong:rgba(95,130,232,.22);
  --accent-track:rgba(95,130,232,.78);
  --warn:#ffcc66;
  --danger:#ff6b6b;
  --line:rgba(255,255,255,.09);
  --radius:18px;
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --maxw: 980px;
  --font: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family:var(--font);
  background: radial-gradient(1200px 600px at 30% 10%, rgba(95,130,232,.16), transparent 60%),
              radial-gradient(900px 500px at 80% 0%, rgba(41,69,138,.16), transparent 55%),
              var(--bg);
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-size: cover, cover, auto;
  background-attachment: fixed, fixed, fixed;
  color:var(--text);
}

a{color:inherit; text-decoration:none}
.container{max-width:var(--maxw); margin:0 auto; padding:24px}
.srOnly{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}
.topbar{
  position:sticky; top:0; z-index:10;
  backdrop-filter: blur(10px);
  background: rgba(11,15,20,.78);
  border-bottom:1px solid var(--line);
}
.topbar .row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 24px;
  max-width:var(--maxw);
  margin:0 auto;
}
.brand{display:flex; flex-direction:column; line-height:1.05}
.brand b{font-size:14px; letter-spacing:.2px}
.brand span{font-size:12px; color:var(--muted)}
.nav{
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:nowrap;
  overflow-x:auto;
  padding-bottom:2px;
}
.nav::-webkit-scrollbar{height:0}
.trackPicker{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
  padding:8px 10px;
  border-radius:999px;
}
.trackPicker small{color:var(--muted)}
.trackPicker select{
  appearance:none;
  -webkit-appearance:none;
  -moz-appearance:none;
  border:1px solid var(--line);
  background: var(--card);
  color:var(--text);
  outline:none;
  border-radius:10px;
  width:auto;
  padding:6px 26px 6px 10px;
  min-width:140px;
  color-scheme: dark;
}
.trackPicker::after{
  content:"▾";
  position:absolute;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  color:var(--muted);
  pointer-events:none;
  font-size:12px;
}
.trackPicker select:focus-visible{
  border-color:var(--accent-border);
  box-shadow:0 0 0 2px var(--accent-soft);
}
.trackPicker select option{
  background:var(--card);
  color:var(--text);
}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
  color:var(--text);
  font:inherit;
  padding:10px 12px; border-radius:999px;
  transition:.15s transform, .15s background;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px); background: rgba(255,255,255,.05)}
.btn.primary{border-color: var(--accent-border); background: var(--accent-soft)}
.btn.is-active{
  border-color: var(--accent-border);
  background: var(--accent-strong);
  font-weight:600;
}
.btn small{color:var(--muted)}
.btn:disabled{
  opacity:.45;
  cursor:not-allowed;
  transform:none;
}

.globalProgress{
  position:sticky;
  top:62px;
  z-index:9;
  border-bottom:1px solid var(--line);
  background: rgba(11,15,20,.9);
  backdrop-filter: blur(8px);
}
.globalProgress .inner{
  max-width:var(--maxw);
  margin:0 auto;
  padding:8px 24px 10px 24px;
}
.globalProgress .head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  margin-bottom:6px;
}
.globalProgress .head b{
  font-size:12px;
  letter-spacing:.2px;
}
.globalProgress .head span{
  font-size:12px;
  color:var(--muted);
}
.gpTrack{
  height:8px;
  width:100%;
  background:rgba(255,255,255,.08);
  border-radius:999px;
  overflow:hidden;
}
.gpTrack i{
  display:block;
  height:100%;
  width:0;
  background:var(--accent-track);
  transition:width .2s ease;
}

.hero{
  display:grid; gap:16px; padding:26px;
  border:1px solid var(--line); border-radius:var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  box-shadow: var(--shadow);
}
.hero h1{margin:0; font-size:28px}
.hero p{margin:0; color:var(--muted); line-height:1.45}
.chips{display:flex; flex-wrap:wrap; gap:8px}
.chip{
  font-size:12px; color:var(--muted);
  border:1px solid var(--line);
  padding:6px 10px; border-radius:999px;
}

.grid2{display:grid; grid-template-columns:1.2fr .8fr; gap:16px}
@media(max-width:900px){.grid2{grid-template-columns:1fr}}

.panel{
  border:1px solid var(--line); border-radius:var(--radius);
  background: rgba(255,255,255,.02);
  padding:16px;
}
.panel h3{margin:0 0 8px 0}
.panel p{margin:0; color:var(--muted); line-height:1.45}

hr.sep{border:none; border-top:1px solid var(--line); margin:18px 0}

.kpi{display:flex; gap:10px; flex-wrap:wrap}
.kpi .box{
  flex:1; min-width:160px;
  border:1px solid var(--line); border-radius:14px; padding:12px;
  background: rgba(255,255,255,.02);
}
.kpi .box b{display:block; font-size:13px}
.kpi .box span{color:var(--muted); font-size:12px}

/* ===== FEED (vertical snap) ===== */
.feedWrap{
  height: calc(100vh - 58px);
  overflow-y:auto;
  scroll-snap-type: y mandatory;
}
.cardSnap{
  scroll-snap-align:start;
  min-height: calc(100vh - 58px);
  padding:22px 18px;
  display:flex; align-items:center; justify-content:center;
}
.lessonCard{
  width:min(860px, 100%);
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.02);
  box-shadow: var(--shadow);
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  overflow:hidden;
}
@media(max-width:900px){.lessonCard{grid-template-columns:1fr}}

.lessonMain{padding:18px 18px 18px 18px}
.lessonSide{
  padding:18px;
  border-left:1px solid var(--line);
  background: rgba(16,24,38,.35);
}
@media(max-width:900px){.lessonSide{border-left:none; border-top:1px solid var(--line)}}

.badge{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12px; color:var(--muted);
  border:1px solid var(--line);
  padding:6px 10px; border-radius:999px;
}
.titleRow{display:flex; align-items:flex-start; justify-content:space-between; gap:12px}
.lessonMain h2{margin:10px 0 6px 0; font-size:22px}
.lessonMain p{margin:0; color:var(--muted); line-height:1.45}

.callout{
  margin-top:12px;
  border:1px solid var(--accent-border);
  background: var(--accent-soft);
  border-radius:14px; padding:10px 12px;
}
.callout b{display:block; font-size:13px}
.callout span{color:var(--muted); font-size:12px}

.sideBlock{border:1px solid var(--line); border-radius:14px; padding:12px; background: rgba(255,255,255,.02); margin-bottom:10px}
.sideBlock h4{margin:0 0 6px 0; font-size:13px}
.sideBlock ul{margin:0; padding-left:18px; color:var(--muted); line-height:1.45}
.sideBlock li{margin:4px 0}

.actions{display:flex; gap:8px; flex-wrap:wrap; margin-top:10px}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid var(--line); background: rgba(255,255,255,.02);
  padding:8px 10px; border-radius:999px; font-size:12px; color:var(--muted);
}
.pill strong{color:var(--text); font-weight:600}

/* ===== PISTA (horizontal) ===== */
.pistaWrap{
  height: calc(100vh - 58px);
  overflow-x:auto;
  overflow-y:hidden;
  scroll-snap-type: x mandatory;
  display:flex;
}
.pista{
  scroll-snap-align:start;
  min-width: 100%;
  padding:22px;
  display:flex; align-items:center; justify-content:center;
}
.pistaCard{
  width:min(920px, 100%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background: rgba(255,255,255,.02);
  box-shadow: var(--shadow);
  padding:18px;
}
.progress{
  height:6px; border-radius:999px;
  background: rgba(255,255,255,.08);
  overflow:hidden; margin:10px 0 16px 0;
}
.progress > i{display:block; height:100%; width:0%; background: var(--accent-track);}

.formRow{display:grid; grid-template-columns:1fr 1fr; gap:12px}
@media(max-width:900px){.formRow{grid-template-columns:1fr}}
.formGrid{display:grid; grid-template-columns:1fr 1fr; gap:12px}
@media(max-width:900px){.formGrid{grid-template-columns:1fr}}
label{font-size:12px; color:var(--muted); display:block; margin-bottom:6px}
input, textarea, select{
  width:100%;
  background: rgba(255,255,255,.02);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--text);
  padding:10px 12px;
}
textarea{min-height:90px; resize:vertical}
#mdOut{min-height:280px}

.footerHint{color:var(--muted); font-size:12px; margin-top:10px}
.inlineHint{
  margin-top:8px;
  font-size:12px;
  border:1px solid var(--line);
  border-radius:10px;
  padding:8px 10px;
  color:var(--muted);
}
.inlineHint.ok{
  border-color:var(--accent-border);
  background:var(--accent-soft);
  color:var(--text);
}
.inlineHint.warn{
  border-color:rgba(255,204,102,.35);
  background:rgba(255,204,102,.08);
  color:#ffdca1;
}
.saveStatus{
  margin-top:10px;
  font-size:12px;
  color:var(--muted);
}

.modalOverlay{
  position:fixed;
  inset:0;
  background:rgba(6,10,18,.72);
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
  z-index:100;
}
.modalOverlay.open{display:flex}
.modalCard{
  width:min(680px, 100%);
  border:1px solid var(--line);
  border-radius:16px;
  background:var(--panel);
  padding:18px;
  box-shadow:var(--shadow);
}
.modalCard h3{
  margin:0 0 8px 0;
}
.modalCard p{
  margin:0 0 12px 0;
  color:var(--muted);
}

.qaList{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:8px;
}
.qaItem{
  border:1px solid var(--line);
  border-radius:10px;
  padding:10px 12px;
  font-size:13px;
}
.qaItem.ok{
  border-color: var(--accent-border);
  background: var(--accent-soft);
}
.qaItem.warn{
  border-color: rgba(255,204,102,.35);
  background: rgba(255,204,102,.08);
}

.pistaControls{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
}
.pistaStep{
  min-width:140px;
  text-align:center;
  font-size:13px;
  color:var(--muted);
}

@media (max-width:900px){
  .topbar .row{
    align-items:flex-start;
    gap:10px;
    padding:10px 14px;
  }
  .brand span{
    display:none;
  }
  .nav{
    width:100%;
  }
  .globalProgress{
    top:58px;
  }
  .globalProgress .inner{
    padding:8px 14px 10px 14px;
  }
}