/* Student learning layer: dashboard, lessons, saved progress, and guided workflow. */

.student-hub{padding-top:42px;scroll-margin-top:78px}
.hub-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(310px,.85fr);
  gap:24px;align-items:stretch;padding:30px;border-radius:22px;color:#fff;
  background:
    radial-gradient(520px 240px at 8% 112%,rgba(75,139,190,.35),transparent 65%),
    radial-gradient(480px 260px at 98% -12%,rgba(0,168,143,.32),transparent 62%),
    linear-gradient(145deg,var(--dark),#12343a);
  border:1px solid rgba(43,212,189,.24);box-shadow:var(--shadow-lg);overflow:hidden}
.hub-intro{align-self:center}
.hub-intro .kicker{color:#7fd8cb}
.hub-intro .kicker::before{color:var(--py-yellow)}
.hub-intro h2{color:#fff;font-size:2rem}
.hub-intro .sub{color:#c5d7dc;margin-bottom:22px}
.hub-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.hub-actions .btn{border:0;cursor:pointer;font-family:inherit}
.hub-secondary{background:rgba(255,255,255,.08);color:#fff;
  border:1px solid rgba(255,255,255,.28)!important}
.hub-secondary:hover{color:#fff}

.progress-card{display:grid;grid-template-columns:146px 1fr;gap:22px;align-items:center;
  padding:22px;border-radius:18px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(8px)}
.progress-ring{position:relative;width:138px;aspect-ratio:1;border-radius:50%;
  display:grid;place-content:center;text-align:center;isolation:isolate;
  background:conic-gradient(var(--teal-glow) var(--course-progress),rgba(255,255,255,.13) 0);
  box-shadow:0 0 38px rgba(43,212,189,.17)}
.progress-ring::before{content:"";position:absolute;inset:11px;border-radius:50%;z-index:-1;
  background:#10262d;border:1px solid rgba(255,255,255,.08)}
.progress-ring strong{font-size:2rem;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums}
.progress-ring span{font-size:.75rem;color:#a9c6cc;margin-top:4px}
.progress-kicker{display:block;color:#8ce0d2;font-size:.77rem;font-weight:800;margin-bottom:3px}
.progress-card h3{color:#fff;font-size:1.15rem;margin-bottom:5px}
.progress-card p{color:#bdd0d5;font-size:.84rem;line-height:1.65;margin-bottom:8px}
.reset-progress{padding:0;border:0;background:none;color:#ffe58a;font-family:inherit;font-weight:700;font-size:.75rem;
  cursor:pointer;text-decoration:underline;text-underline-offset:3px}

.day-progress{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px;
  margin-top:14px;padding:14px 16px;background:var(--surface);border:1px solid var(--line);
  border-radius:15px;box-shadow:var(--shadow)}
.day-progress button{position:relative;border:1px solid var(--line);background:var(--bg);
  color:var(--muted);font-family:inherit;font-weight:800;font-size:.78rem;border-radius:10px;min-height:42px;cursor:pointer;
  transition:transform .18s,border-color .18s,background .18s,color .18s}
.day-progress button:hover,.day-progress button:focus-visible{transform:translateY(-2px);
  border-color:var(--teal-2);color:var(--teal-ink)}
.day-progress button.is-current{border-color:var(--amber);box-shadow:inset 0 -3px 0 var(--amber)}
.day-progress button.is-done{background:var(--green-light);border-color:var(--green);color:var(--green)}
.day-progress button.is-done::after{content:"✓";margin-inline-start:4px}

#plan .day[role="button"]{cursor:pointer}
#plan .day[role="button"]:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
#plan .day.is-current{border-color:var(--amber);box-shadow:0 0 0 2px rgba(230,119,0,.15),var(--shadow)}
#plan .day.is-done{border-color:var(--green);background:
  linear-gradient(145deg,var(--surface),var(--green-light))}
#plan .day.is-done>i{background:var(--green);color:#fff}
#plan .day.is-done .dicon{background:var(--green)}
#plan .day.is-done .dicon svg{stroke:#fff}
.day-state{display:inline-flex;align-items:center;gap:5px;margin-top:10px;padding:3px 10px;
  border-radius:99px;font-size:.7rem;font-weight:800;background:var(--codebg);color:var(--muted)}
.day.is-current .day-state{background:var(--amber-light);color:var(--amber-ink)}
.day.is-done .day-state{background:var(--green-light);color:var(--green)}

.lesson-dialog{width:min(880px,calc(100% - 28px));max-height:min(880px,calc(100svh - 28px));
  margin:auto;padding:0;border:1px solid var(--line);border-radius:22px;color:var(--ink);
  background:var(--surface);box-shadow:0 30px 90px rgba(0,0,0,.45);overflow:hidden}
.lesson-dialog::backdrop{background:rgba(5,16,21,.72);backdrop-filter:blur(5px)}
.lesson-dialog[open]{animation:lesson-in .24s ease both}
@keyframes lesson-in{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.lesson-shell{display:flex;flex-direction:column;max-height:min(880px,calc(100svh - 28px))}
.lesson-topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:22px 24px;background:linear-gradient(120deg,var(--dark),#143941);color:#fff;
  border-bottom:4px solid var(--amber)}
.lesson-topbar h2{color:#fff;font-size:1.55rem;margin:2px 0 0}
.lesson-day{color:#8ce0d2;font-size:.78rem;font-weight:800}
.lesson-close{width:40px;height:40px;border-radius:11px;border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.08);color:#fff;font-family:inherit;font-weight:400;font-size:1.65rem;line-height:1;cursor:pointer;flex-shrink:0}
.lesson-close:hover{background:rgba(255,255,255,.16)}
.lesson-body{padding:22px 24px;overflow:auto;display:grid;grid-template-columns:1fr 1fr;gap:15px}
.lesson-block{padding:17px;border:1px solid var(--line);border-radius:14px;background:var(--bg)}
.lesson-block p{font-size:.9rem;color:var(--muted)}
.lesson-label{display:block;color:var(--teal-ink);font-size:.75rem;font-weight:800;margin-bottom:7px}
.lesson-block-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.lesson-block-head button,.lesson-resource{border:0;border-radius:8px;background:var(--teal-light);
  color:var(--teal-ink);padding:6px 12px;font-family:inherit;font-weight:800;font-size:.75rem;cursor:pointer}
.lesson-resource{display:inline-block;margin-top:12px}
.lesson-command{grid-column:1/-1}
.lesson-command pre{direction:ltr;text-align:left;white-space:pre-wrap;overflow:auto;margin-top:7px;
  padding:14px;border-radius:10px;background:#0b171d;color:#d7f4ee;
  font:400 .84rem/1.75 'JetBrains Mono',Consolas,monospace}
.command-status{min-height:1.35em;margin-top:5px;font-size:.75rem!important;color:var(--green)!important}
.lesson-quiz{grid-column:1/-1}
.lesson-quiz fieldset{border:0}
.lesson-quiz legend{font-weight:800;color:var(--dark-3);margin-bottom:10px}
#quizOptions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.quiz-option{display:flex;align-items:flex-start;gap:8px;padding:10px;border:1px solid var(--line);
  border-radius:10px;background:var(--surface);font-size:.82rem;cursor:pointer}
.quiz-option:has(input:checked){border-color:var(--teal-2);background:var(--teal-light)}
.quiz-option input{accent-color:var(--teal);margin-top:5px}
.check-answer{margin-top:12px;border:0;border-radius:9px;background:var(--blue);color:#fff;
  padding:9px 16px;font-family:inherit;font-weight:800;font-size:.8rem;cursor:pointer}
.quiz-feedback{min-height:1.6em;margin-top:7px;font-size:.82rem!important;font-weight:700}
.quiz-feedback.good{color:var(--green)!important}.quiz-feedback.bad{color:var(--red)!important}
.lesson-footer{display:grid;grid-template-columns:auto 1fr auto;gap:10px;padding:15px 24px;
  background:var(--bg);border-top:1px solid var(--line)}
.lesson-footer button{border-radius:10px;padding:10px 14px;font-family:inherit;font-weight:800;font-size:.8rem;cursor:pointer}
.lesson-nav{border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.lesson-nav:disabled{opacity:.38;cursor:not-allowed}
.complete-lesson{border:0;background:var(--green);color:#fff}
.complete-lesson:disabled{background:var(--line);color:var(--muted);cursor:not-allowed}
.complete-lesson.is-done{background:var(--green);color:#fff}

.journey-lab{margin-top:22px;padding:22px;border:1px solid var(--line);border-radius:17px;
  background:linear-gradient(145deg,var(--surface),var(--blue-light));box-shadow:var(--shadow)}
.journey-lab-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.journey-eyebrow{display:block;color:var(--py-blue-ink);font-size:.75rem;font-weight:800;margin-bottom:3px}
.journey-lab h3{color:var(--dark-3);font-size:1.15rem}
.journey-lab>p{color:var(--muted);font-size:.9rem;margin-top:7px;max-width:52rem}
.journey-controls{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.journey-controls button,.journey-open{border:1px solid var(--line);background:var(--surface);
  color:var(--ink);border-radius:9px;padding:7px 11px;font-family:inherit;font-weight:800;font-size:.75rem;cursor:pointer}
.journey-controls .journey-play{background:var(--teal);border-color:var(--teal);color:#fff}
.journey-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.journey-facts div{padding:12px;border-radius:11px;background:var(--surface);border:1px solid var(--line)}
.journey-facts span{display:block;color:var(--muted);font-size:.7rem;margin-bottom:3px}
.journey-facts b{display:block;color:var(--dark-3);font-size:.8rem}
.journey-status{margin-top:11px;color:var(--teal-ink);font-size:.75rem;font-weight:800}
.journey-open{display:block;margin:9px auto 0;padding:5px 10px;color:var(--teal-ink)}
.jcell.is-active .jbadge{background:var(--teal);border-color:var(--teal-glow);
  box-shadow:0 0 0 7px rgba(0,168,143,.13),var(--shadow-lg)}
.jcell.is-active .jbadge svg{stroke:#fff}
.jcell.is-active .jcard h3{color:var(--teal-ink)}
.journey-token{position:absolute;top:0;left:0;width:15px;height:15px;border-radius:50%;z-index:4;
  pointer-events:none;background:var(--py-yellow);border:3px solid var(--surface);
  box-shadow:0 0 0 5px rgba(255,212,59,.2),0 0 18px rgba(255,212,59,.7);
  transition:transform .65s cubic-bezier(.2,.75,.25,1)}

@media(max-width:850px){
  .hub-grid{grid-template-columns:1fr;padding:24px}
  .progress-card{grid-template-columns:120px 1fr}
  .progress-ring{width:116px}
  .day-progress{grid-template-columns:repeat(5,1fr)}
  .lesson-body{grid-template-columns:1fr}
  .lesson-command,.lesson-quiz{grid-column:auto}
  #quizOptions{grid-template-columns:1fr}
  .journey-lab-head{display:block}
  .journey-controls{justify-content:flex-start;margin-top:12px}
}

@media(max-width:520px){
  .hub-grid{padding:20px;border-radius:17px}
  .hub-intro h2{font-size:1.6rem}
  .progress-card{grid-template-columns:1fr;text-align:center}
  .progress-ring{margin:auto}
  .day-progress{grid-template-columns:repeat(2,1fr)}
  .lesson-dialog{width:calc(100% - 14px);max-height:calc(100svh - 14px);border-radius:16px}
  .lesson-shell{max-height:calc(100svh - 14px)}
  .lesson-topbar,.lesson-body,.lesson-footer{padding-inline:15px}
  .lesson-footer{grid-template-columns:1fr 1fr}
  .complete-lesson{grid-column:1/-1;grid-row:1}
  .journey-facts{grid-template-columns:1fr}
}

@media(prefers-reduced-motion:reduce){
  .lesson-dialog[open]{animation:none}
  .journey-token,.day-progress button{transition:none}
}

@media print{
  .student-hub,.journey-lab,.journey-open,.lesson-dialog{display:none!important}
}