/* ============================================================
   învațăcu — study hub (Psihologie & Științe Cognitive)
   Calm, focused, mobile-first. No distraction.
   ============================================================ */
:root{
  --bg:#F4F1EA; --paper:#FFFFFF; --paper-2:#FBFAF6;
  --ink:#22262E; --ink-soft:#3A4049; --muted:#717784; --faint:#9AA0AC;
  --line:#E6E1D5; --line-2:#EFEBE0;
  --primary:#4A53D6; --primary-deep:#343CB0; --primary-soft:#EEEFFB;
  --accent:#12A98B; --accent-soft:#E5F6F1;
  --wrong:#DB5247; --wrong-soft:#FBEDEB;
  --gold:#CE9A33;
  --grad:linear-gradient(135deg,#4A53D6 0%,#7A50E6 100%);
  --shadow-sm:0 1px 2px rgba(30,34,42,.05),0 1px 3px rgba(30,34,42,.06);
  --shadow:0 4px 14px rgba(30,34,42,.07),0 2px 6px rgba(30,34,42,.05);
  --shadow-lg:0 18px 50px rgba(30,34,42,.14);
  --r:14px; --r-sm:10px; --r-lg:22px;
  --wrap:1080px;
  --serif:'Lora',Georgia,'Times New Roman',serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
body{
  margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;overflow-x:clip;max-width:100%;
}
.chap,.chap-body,.lesson,.chapters,.layout>div{min-width:0}
img,video{max-width:100%;display:block}
svg.ico{width:18px;height:18px;flex:0 0 auto;vertical-align:middle}
.hero .eyebrow .ico{width:15px;height:15px}
.free-badge .ico{width:22px;height:22px}
.quicknav .qn-final .ico,.drawer .qn-final .ico{width:16px;height:16px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.18;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(2rem,5.5vw,3.1rem);letter-spacing:-.01em}
h2{font-size:clamp(1.5rem,3.6vw,2.1rem)}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- Header / nav ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(244,241,234,.86);
  backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line);
  transition:transform .32s ease}
body.head-hidden .site-head{transform:translateY(-100%)}
.site-head .bar{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-weight:600;
  font-size:1.28rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .dot{width:11px;height:11px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px var(--primary-soft)}
.brand .bmark{width:32px;height:32px;border-radius:9px;background:var(--grad);display:grid;place-items:center;
  box-shadow:0 4px 12px rgba(74,83,214,.28);flex:0 0 auto}
.brand .bmark .ico{width:19px;height:19px;color:#fff}
.brand .ai{color:var(--primary-deep);font-weight:700;letter-spacing:-.01em}
.brand b{font-weight:700}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{color:var(--ink-soft);font-weight:500;font-size:.95rem;padding:8px 14px;border-radius:999px;white-space:nowrap}
.nav a:hover{background:var(--paper);text-decoration:none}
.nav a.active{background:var(--ink);color:#fff}
.nav .short{display:none}
.head-prog{display:flex;align-items:center;gap:9px;margin-left:6px}
.head-prog .ring{--p:0}
.head-prog small{font-size:.78rem;color:var(--muted);font-weight:600;white-space:nowrap}

/* progress ring (svg) */
.ring{width:34px;height:34px;flex:0 0 auto}
.ring circle{fill:none;stroke-width:4}
.ring .bg{stroke:var(--line)}
.ring .fg{stroke:var(--accent);stroke-linecap:round;transition:stroke-dashoffset .6s ease}

/* ---------- Sticky study bar (compact, under header) ---------- */
.studybar{position:sticky;top:62px;z-index:58;background:rgba(244,241,234,.92);
  backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line);transition:top .32s ease}
body.head-hidden .studybar{top:0}
/* studybar toggle (Extinde/Restrânge tot) chevron flips when all open */
#toggleAll .tgl-ico{transition:transform .25s ease}
#toggleAll.is-open .tgl-ico{transform:rotate(180deg)}
.sb-wrap{display:flex;align-items:center;gap:16px;height:50px}
.sb-prog{display:flex;align-items:center;gap:10px;flex:1;min-width:0;max-width:540px}
.sb-label{font-size:.8rem;font-weight:600;color:var(--ink-soft);white-space:nowrap}
.sb-prog .bar{flex:1;min-width:60px}
.sb-pct{font-size:.82rem;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;white-space:nowrap}
.sb-actions{display:flex;gap:8px;margin-left:auto;flex:0 0 auto}
@media(max-width:560px){
  .studybar{top:56px}
  .sb-wrap{height:46px;gap:10px}
  .sb-label{display:none}
  .sb-actions .btn{padding:8px 11px}
  .sb-actions .btn .lbl{display:none}
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-weight:600;
  font-size:.94rem;padding:11px 18px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease,box-shadow .2s ease,background .2s ease;white-space:nowrap}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(74,83,214,.28)}
.btn-grad:hover{box-shadow:0 10px 26px rgba(74,83,214,.36)}
.btn-soft{background:var(--paper);color:var(--ink);border-color:var(--line)}
.btn-soft:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{background:transparent;color:var(--ink-soft);border-color:var(--line)}
.btn-ghost:hover{background:var(--paper)}
.btn-sm{padding:8px 14px;font-size:.86rem}
.btn .ico{width:17px;height:17px}
.btn-block{width:100%;justify-content:center}

/* ---------- Home ---------- */
.hero{padding:64px 22px 38px;position:relative}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--primary-soft);color:var(--primary-deep);
  font-weight:600;font-size:.8rem;letter-spacing:.04em;text-transform:uppercase;padding:6px 13px;border-radius:999px}
.hero h1{margin:.5em 0 .3em;max-width:14ch}
.hero .grad-t{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.12;padding-bottom:.12em;display:inline-block}
.hero .lead{font-size:1.18rem;color:var(--ink-soft);max-width:54ch}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.free-badge{display:flex;gap:13px;align-items:flex-start;margin-top:30px;background:var(--accent-soft);
  border:1px solid #CDEDE4;border-radius:var(--r);padding:15px 18px;max-width:560px}
.free-badge .ico{color:var(--accent);flex:0 0 auto;margin-top:2px}
.free-badge b{color:var(--ink)}
.free-badge p{margin:0;font-size:.94rem;color:var(--ink-soft)}

.section{padding:40px 0}
.section-h{margin-bottom:22px}
.section-h h2{margin-bottom:.2em}
.subject-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.subj-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-sm);transition:transform .16s ease,box-shadow .2s ease;display:flex;flex-direction:column;gap:10px}
.subj-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);text-decoration:none}
.subj-card .tag{font-size:.78rem;font-weight:600;color:var(--primary-deep);text-transform:uppercase;letter-spacing:.04em}
.subj-card h3{font-size:1.45rem;margin:0}
.subj-card .meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:6px}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--paper-2);border:1px solid var(--line);
  color:var(--ink-soft);font-size:.8rem;font-weight:500;padding:4px 11px;border-radius:999px}
.chip .ico{width:14px;height:14px;color:var(--muted)}
.subj-card.soon{opacity:.7;pointer-events:none;border-style:dashed}
.subj-card .go{margin-top:auto;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow-sm)}
.step .n{width:36px;height:36px;border-radius:10px;background:var(--primary-soft);color:var(--primary-deep);
  display:grid;place-items:center;font-weight:700;font-family:var(--serif);margin-bottom:12px}
.step h4{margin:0 0 .3em;font-size:1.1rem}
.step p{margin:0;font-size:.92rem;color:var(--muted)}

/* ---------- Subject one-pager ---------- */
.subject-hero{background:var(--paper);border-bottom:1px solid var(--line);padding:36px 0 30px}
.crumb{font-size:.85rem;color:var(--muted);font-weight:500;margin-bottom:10px}
.crumb b{color:var(--ink-soft)}
.subject-hero h1{margin:0 0 .25em;font-size:clamp(1.8rem,4.5vw,2.7rem)}
.subject-hero .lead{color:var(--ink-soft);max-width:60ch;margin-bottom:20px}
.bigprog{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;max-width:640px}
.bigprog .row{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px}
.bigprog .row b{font-weight:600}
.bigprog .row span{font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.bar{height:9px;background:var(--line);border-radius:999px;overflow:hidden}
.bar>i{display:block;height:100%;width:0;background:var(--grad);border-radius:999px;transition:width .6s cubic-bezier(.2,.7,.2,1)}
.bar.acc>i{background:linear-gradient(90deg,#12A98B,#36C9A6)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px;align-items:center}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.82rem;color:var(--muted);margin-top:14px}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:11px;height:11px;border-radius:50%}

/* layout: floating quicknav + content */
.layout{display:grid;grid-template-columns:236px 1fr;gap:30px;align-items:start;padding:30px 0 80px}
.quicknav{position:sticky;top:80px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  padding:12px;box-shadow:var(--shadow-sm);max-height:calc(100vh - 100px);overflow:auto}
.quicknav .qn-title{font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);
  font-weight:700;padding:6px 10px 8px}
.quicknav a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;color:var(--ink-soft);
  font-size:.9rem;font-weight:500;line-height:1.3}
.quicknav a:hover{background:var(--paper-2);text-decoration:none}
.quicknav a.active{background:var(--primary-soft);color:var(--primary-deep)}
.quicknav a .qdot{width:18px;height:18px;flex:0 0 auto;border-radius:50%;border:2px solid var(--line);position:relative}
.quicknav a .qdot.part{border-color:var(--gold);background:conic-gradient(var(--gold) 50%,transparent 0)}
.quicknav a .qdot.done{border-color:var(--accent);background:var(--accent)}
.quicknav a .qdot.done::after{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/11px no-repeat}
.quicknav a span{flex:1;min-width:0}
.quicknav .qn-final{margin-top:8px;border-top:1px solid var(--line);padding-top:8px}
.quicknav .qn-final a{color:var(--primary);font-weight:600}

/* ---------- Accordion chapter cards ---------- */
.chapters{display:flex;flex-direction:column;gap:16px;min-width:0}
.chap{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-sm);
  scroll-margin-top:116px;overflow:hidden}
.chap.open{box-shadow:var(--shadow)}
.chap-head{display:flex;align-items:center;gap:15px;padding:18px 20px;cursor:pointer;user-select:none}
.chap-head .num{flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:var(--primary-soft);
  color:var(--primary-deep);font-family:var(--serif);font-weight:700;font-size:1.15rem;display:grid;place-items:center}
.chap.done .chap-head .num{background:var(--accent);color:#fff}
.chap-head .ttl{flex:1;min-width:0}
.chap-head .ttl h3{margin:0;font-size:1.18rem;line-height:1.25}
.chap-head .ttl p{margin:2px 0 0;font-size:.85rem;color:var(--muted)}
.chap-head .cp{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.chap-head .cp .mini{width:64px}
.chap-head .chev{transition:transform .25s ease;color:var(--muted)}
.chap.open .chap-head .chev{transform:rotate(180deg)}
.chap-body{display:none;padding:0 20px 22px;border-top:1px solid var(--line-2)}
.chap.open .chap-body{display:block;animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

.block-label{display:flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;color:var(--faint);margin:22px 0 12px}
.block-label .ico{width:16px;height:16px;color:var(--primary)}

.videowrap{position:relative;width:100%;max-width:100%;padding-top:56.25%;border-radius:var(--r);overflow:hidden;background:#0d0f14;border:1px solid var(--line)}
.videowrap video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.videowrap.vfacade{cursor:pointer;background-size:cover;background-position:center;background-repeat:no-repeat}
.videowrap.vfacade::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,15,20,.04),rgba(13,15,20,.30));transition:background .2s ease}
.videowrap.vfacade:hover::after,.videowrap.vfacade:focus-visible::after{background:linear-gradient(180deg,rgba(13,15,20,.12),rgba(13,15,20,.42))}
.vplay{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;width:68px;height:68px;border-radius:50%;
  background:rgba(255,255,255,.95);display:grid;place-items:center;box-shadow:0 10px 34px rgba(0,0,0,.38);transition:transform .15s ease}
.videowrap.vfacade:hover .vplay{transform:translate(-50%,-50%) scale(1.07)}
.vplay svg{width:26px;height:26px;margin-left:3px;color:var(--primary-deep);fill:var(--primary-deep);stroke:var(--primary-deep)}

/* lesson / summary */
.lesson{font-size:1rem;color:var(--ink-soft)}
.lesson h3{font-family:var(--serif);font-size:1.3rem;margin:1.3em 0 .5em;color:var(--ink)}
.lesson h4{font-family:var(--serif);font-size:1.08rem;margin:1.1em 0 .4em;color:var(--ink)}
.lesson p{margin:0 0 .9em}
.lesson ul,.lesson ol{margin:0 0 1em;padding-left:1.3em}
.lesson li{margin:.3em 0}
.lesson strong{color:var(--ink);font-weight:600}
.lesson .term{background:var(--primary-soft);color:var(--primary-deep);font-weight:600;padding:1px 6px;border-radius:6px;
  white-space:nowrap}
.lesson .callout{background:var(--paper-2);border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:10px;padding:14px 16px;margin:1.1em 0}
.lesson .callout.def{background:var(--primary-soft);border-color:#D9DCF7;border-left-color:var(--primary-deep)}
.lesson .callout p:last-child{margin-bottom:0}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.1em 0;border:1px solid var(--line);border-radius:10px}
.lesson .ctab{border-collapse:collapse;width:100%;font-size:.92rem;min-width:440px}
.lesson .ctab th,.lesson .ctab td{text-align:left;padding:10px 13px;border-bottom:1px solid var(--line-2);vertical-align:top}
.lesson .ctab thead th{background:var(--paper-2);font-weight:600;color:var(--ink);font-family:var(--sans);
  position:sticky;top:0}
.lesson .ctab tbody tr:last-child td{border-bottom:none}

.video-pending{display:flex;align-items:center;gap:12px;background:var(--paper-2);border:1px dashed var(--line);
  border-radius:var(--r);padding:18px 18px;color:var(--muted);font-size:.92rem;line-height:1.45}
.video-pending .ico{width:26px;height:26px;color:var(--faint);flex:0 0 auto}
.lesson-fig{margin:1.3em 0;text-align:center}
.lesson-fig img{max-width:100%;max-height:420px;border-radius:11px;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);display:inline-block}
.lesson-fig a{display:inline-block;line-height:0}
.dl-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
.lesson-done{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:20px;padding-top:18px;border-top:1px dashed var(--line)}

/* ---------- Quiz ---------- */
.quiz{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-top:6px}
.quiz-start{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.quiz-start .qi h4{margin:0 0 2px;font-size:1.12rem}
.quiz-start .qi p{margin:0;font-size:.88rem;color:var(--muted)}
.quiz-live .qz-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.qz-count{font-size:.85rem;color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums}
.qz-score{font-size:.85rem;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.qz-progress{height:6px;background:var(--line);border-radius:999px;overflow:hidden;margin-bottom:16px}
.qz-progress>i{display:block;height:100%;background:var(--grad);width:0;transition:width .4s ease;border-radius:999px}
.qz-q{font-size:1.08rem;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:14px;font-family:var(--sans)}
.qz-q .src{display:block;font-size:.76rem;font-weight:600;color:var(--primary-deep);text-transform:uppercase;
  letter-spacing:.04em;margin-bottom:6px}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{display:flex;gap:11px;align-items:flex-start;text-align:left;background:var(--paper);border:1.5px solid var(--line);
  border-radius:11px;padding:13px 15px;cursor:pointer;font-size:.97rem;line-height:1.45;color:var(--ink-soft);
  transition:border-color .15s ease,background .15s ease;width:100%;font-family:var(--sans)}
.opt:hover:not(.locked){border-color:var(--primary);background:var(--primary-soft)}
.opt .lt{flex:0 0 auto;width:25px;height:25px;border-radius:7px;background:var(--paper-2);border:1px solid var(--line);
  font-weight:700;font-size:.85rem;display:grid;place-items:center;color:var(--muted)}
.opt.locked{cursor:default}
.opt.correct{border-color:var(--accent);background:var(--accent-soft)}
.opt.correct .lt{background:var(--accent);color:#fff;border-color:var(--accent)}
.opt.chosen-wrong{border-color:var(--wrong);background:var(--wrong-soft)}
.opt.chosen-wrong .lt{background:var(--wrong);color:#fff;border-color:var(--wrong)}
.opt.dim{opacity:.55}
.qz-explain{margin-top:13px;border-radius:11px;padding:13px 15px;font-size:.93rem;line-height:1.55;display:none}
.qz-explain.show{display:block;animation:fade .25s ease}
.qz-explain.ok{background:var(--accent-soft);border:1px solid #CDEDE4}
.qz-explain.no{background:var(--wrong-soft);border:1px solid #F3D6D2}
.qz-explain b{display:block;margin-bottom:3px}
.qz-explain .corr{margin-top:9px;padding-top:9px;border-top:1px solid rgba(0,0,0,.06);color:var(--ink-soft)}
.qz-explain .corr b{color:var(--accent)}
.qz-actions{display:flex;gap:10px;justify-content:space-between;align-items:center;margin-top:16px;flex-wrap:wrap}
.qz-hint{font-size:.9rem;color:var(--gold);background:#FBF3DF;border:1px solid #EFD99A;border-radius:9px;
  padding:9px 13px;margin-top:12px;display:none}
.qz-hint.show{display:block}
.qz-result{text-align:center;padding:14px 6px}
.qz-result .big{font-family:var(--serif);font-size:3rem;font-weight:700;line-height:1}
.qz-result .big small{font-size:1.1rem;font-weight:600;color:var(--muted);font-family:var(--sans,inherit)}
.qz-result .lbl{color:var(--muted);margin:6px 0 4px;font-variant-numeric:tabular-nums}
.qz-result .verdict{font-weight:600;margin:6px auto 6px;max-width:420px}
.qz-oficiu{font-size:.78rem;color:var(--muted);margin-bottom:14px}
.qz-retrynote,.qz-wrongnote{display:inline-flex;align-items:center;gap:7px;font-size:.82rem;color:var(--primary);
  background:var(--paper-2,#f5f4fb);border:1px solid var(--line);border-radius:999px;padding:6px 13px;margin:0 auto 14px}
.qz-retrynote svg,.qz-wrongnote svg{width:15px;height:15px;flex:none}
.qz-wrongnote{margin:8px 0 0}
.qz-startrow{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.qz-resbtns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* final quiz section */
.final-sec{margin-top:30px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);padding:26px;scroll-margin-top:116px}
.final-sec .fh{display:flex;gap:14px;align-items:flex-start}
.final-sec .fh .ico{color:var(--gold);flex:0 0 auto;margin-top:3px}
.final-sec h2{margin:0 0 .25em}
.final-sec .fh p{margin:0;color:var(--ink-soft)}

/* ---------- AI disclaimer (info) ---------- */
.note-ai{display:flex;gap:11px;align-items:flex-start;background:#EEF1F8;border:1px solid #D9E0EE;
  border-radius:12px;padding:13px 16px;font-size:.9rem;color:#4B5263;line-height:1.5}
.note-ai .ico{color:var(--primary);flex:0 0 auto;margin-top:1px;width:20px;height:20px}
.note-ai b{color:var(--ink)}
.hero .note-ai{margin-top:18px;max-width:600px}
.subject-hero .note-ai{margin-top:18px;max-width:680px}

/* ---------- Floating: mobile nav + audio ---------- */
.audio-dock{position:fixed;right:16px;bottom:16px;z-index:70;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.audio-dock .fab-audio,.audio-dock .fab-report{position:static;right:auto;bottom:auto}
.audio-tip{background:var(--ink);color:#fff;font-size:.82rem;line-height:1.38;padding:10px 13px;border-radius:12px;
  max-width:224px;box-shadow:var(--shadow-lg);opacity:0;transform:translateY(6px);pointer-events:none;
  transition:opacity .22s ease,transform .22s ease}
.audio-tip b{color:#fff;font-weight:600}
.audio-dock:hover .audio-tip,.audio-tip.show{opacity:1;transform:none}
.fab{position:fixed;z-index:70;border:none;cursor:pointer;border-radius:999px;display:inline-flex;align-items:center;
  gap:9px;font-family:var(--sans);font-weight:600;box-shadow:var(--shadow-lg);transition:transform .15s ease}
.fab:active{transform:scale(.96)}
.fab-audio{right:18px;bottom:18px;background:var(--paper);color:var(--ink);border:1px solid var(--line);padding:12px 16px}
.fab-audio .ico{width:19px;height:19px;color:var(--primary)}
.fab-audio.playing{background:var(--grad);color:#fff}
.fab-audio.playing .ico{color:#fff}
.fab-audio .eq{display:none;gap:2px;align-items:flex-end;height:15px}
.fab-audio.playing .eq{display:inline-flex}
.fab-audio.playing .lbl-play{display:none}
.fab-audio .eq i{width:3px;background:#fff;border-radius:2px;animation:eq 1s ease-in-out infinite}
.fab-audio .eq i:nth-child(2){animation-delay:.2s}.fab-audio .eq i:nth-child(3){animation-delay:.4s}
@keyframes eq{0%,100%{height:5px}50%{height:14px}}
.fab-nav{display:none;left:18px;bottom:18px;background:var(--ink);color:#fff;padding:13px}
.fab-nav .ico{width:20px;height:20px}

/* floating numbered chapter nav — edge tabs (quarter-CTA, hug the left margin) */
.cnav{position:fixed;left:0;top:50%;transform:translateY(-50%);z-index:66;display:none;
  flex-direction:column;align-items:flex-start;gap:5px;max-height:88vh;overflow-y:auto;padding:4px 0;scrollbar-width:none;
  opacity:.84;transition:opacity .2s ease}
.cnav:hover,.cnav.expanded{opacity:1}
.cnav::-webkit-scrollbar{display:none}
@media(max-width:880px){
  .cnav{display:flex}
  /* left gutter so the edge tabs never cover content text */
  .subject-hero>.wrap{padding-left:48px}
  .layout{padding-left:30px}
  .foot>.wrap{padding-left:48px}
}
@media(max-width:560px){
  .subject-hero>.wrap{padding-left:44px}
  .layout{padding-left:24px}
  .foot>.wrap{padding-left:44px}
}
.cnav-toggle{width:33px;height:27px;border-radius:0 14px 14px 0;border:1px solid var(--line);border-left:none;
  background:rgba(251,250,246,.74);backdrop-filter:blur(4px);color:var(--muted);display:grid;place-items:center;cursor:pointer;
  box-shadow:1px 2px 7px rgba(30,34,42,.09);padding:0;margin-bottom:2px}
.cnav-toggle svg{width:15px;height:15px;transition:transform .25s ease}         /* points down = expand */
.cnav.expanded .cnav-toggle svg{transform:rotate(180deg)}                         /* points up = collapse */
.cnav a{display:flex;align-items:center;text-decoration:none}
.cnav a:hover{text-decoration:none}
.cnav .cnum{flex:0 0 auto;min-width:32px;height:31px;border-radius:0 15px 15px 0;
  background:rgba(251,250,246,.74);backdrop-filter:blur(4px);
  border:1px solid var(--line);border-left:none;color:var(--ink-soft);font-weight:700;font-size:.82rem;
  display:grid;place-items:center;box-shadow:1px 2px 7px rgba(30,34,42,.10);padding:0 7px 0 2px;
  font-variant-numeric:tabular-nums;transition:transform .12s ease;z-index:1}
.cnav .cnum svg{width:14px;height:14px}
.cnav a:active .cnum{transform:scale(.92)}
.cnav a.part .cnum{border-color:var(--gold);color:var(--gold)}
.cnav a.done .cnum{border-color:var(--accent);background:rgba(18,169,139,.9);color:#fff}
.cnav .cfinal .cnum{border-color:var(--primary);color:var(--primary-deep)}
.cnav .clbl{max-width:0;overflow:hidden;white-space:nowrap;font-size:.83rem;font-weight:600;color:var(--ink);
  background:rgba(255,255,255,.96);border-radius:0 15px 15px 0;height:31px;line-height:31px;opacity:0;margin-left:-15px;padding:0;
  box-shadow:1px 2px 7px rgba(30,34,42,.10);transition:max-width .26s ease,opacity .2s ease,padding .26s ease}
.cnav.expanded .clbl{max-width:66vw;opacity:1;padding:0 16px 0 22px}

/* mobile drawer for quicknav (legacy) */
.drawer-back{position:fixed;inset:0;background:rgba(20,22,28,.45);z-index:80;display:none}
.drawer-back.show{display:block}
.drawer{position:fixed;z-index:81;left:0;top:0;bottom:0;width:280px;max-width:84vw;background:var(--paper);
  transform:translateX(-100%);transition:transform .26s ease;padding:18px 14px;overflow:auto;box-shadow:var(--shadow-lg)}
.drawer.show{transform:none}
.drawer .dh{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer .dh b{font-family:var(--serif);font-size:1.1rem}
.drawer .x{background:none;border:none;cursor:pointer;color:var(--muted);padding:4px}

/* ---------- Footer ---------- */
.foot{border-top:1px solid var(--line);background:var(--paper-2);padding:30px 0 36px}
.foot .fwrap{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
.foot .links{display:flex;gap:18px;flex-wrap:wrap;font-size:.9rem}
.foot .links a{color:var(--muted)}
.credit{font-size:.78rem;color:var(--faint);margin-top:14px}
.credit b{color:var(--muted);font-weight:600}

/* audio iframe hidden (legacy, unused) */
.yt-hidden{position:absolute;width:1px;height:1px;left:-9999px;top:-9999px;opacity:0;pointer-events:none}

/* ---------- Cookie / storage notice ---------- */
.cookie-note{position:fixed;left:0;right:0;bottom:0;z-index:85;background:var(--ink);color:#fff;display:none;padding:12px 16px;
  box-shadow:0 -6px 24px rgba(20,22,28,.18)}
.cookie-note.show{display:block;animation:fade .3s ease}
.cookie-note .cn-wrap{max-width:var(--wrap);margin:0 auto;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.cookie-note p{margin:0;font-size:.84rem;line-height:1.45;color:#E5E6EC;flex:1;min-width:220px}
.cookie-note p b{color:#fff;font-weight:600}
.cookie-note .cn-ok{background:#fff;color:var(--ink);flex:0 0 auto}
.cookie-note .cn-ok:hover{background:#f0f0f3}
body.cookie-open .audio-dock,body.cookie-open .fab-nav{bottom:84px}
@media(max-width:560px){ .cookie-note p{font-size:.8rem} body.cookie-open .audio-dock,body.cookie-open .fab-nav{bottom:96px} }

/* ---------- Responsive ---------- */
@media(max-width:880px){
  .layout{grid-template-columns:1fr;gap:0;padding:22px 0 90px}
  .quicknav{display:none}
  .fab-nav{display:inline-flex}
  .steps{grid-template-columns:1fr}
  .nav .lbl-hide{display:none}
}
@media(max-width:640px){ .head-prog{display:none} }
@media(max-width:560px){
  body{font-size:15.5px}
  .wrap{padding:0 20px}
  .site-head .bar{height:56px;gap:8px}
  .brand{font-size:1.04rem;gap:7px}
  .brand .bmark{width:28px;height:28px;border-radius:8px}
  .brand .bmark .ico{width:16px;height:16px}
  .nav{gap:3px}
  .nav a{padding:7px 12px;font-size:.86rem}
  .nav .full{display:none}
  .nav .short{display:inline}
  .hero{padding:44px 24px 30px}
  .hero .lead{font-size:1.06rem}
  .chap-head{padding:15px 15px;gap:12px}
  .chap-head .num{width:38px;height:38px;font-size:1.05rem}
  .chap-head .ttl h3{font-size:1.06rem}
  .chap-head .cp .mini{width:46px}
  .chap-body{padding:0 15px 18px}
  .quiz{padding:14px}
  .opt{padding:12px 13px;font-size:.95rem}
  .final-sec{padding:20px 16px}
  .fab-audio .lbl-txt{display:none}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}

/* ============================================================
   v15 — figures captions, sidebar bullets, subject emblems,
   steps bg icons, nav dropdown
   ============================================================ */
.lesson-fig figcaption{margin-top:8px;font-size:.82rem;color:var(--muted);line-height:1.45;
  text-align:center;max-width:600px;margin-left:auto;margin-right:auto}

/* Desktop sidebar: numbered bullets (unified with mobile rail) */
.quicknav a{gap:11px;padding:7px 9px}
.quicknav a>.qdot{display:none}
.quicknav .qnum{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--paper-2);
  border:1.5px solid var(--line);color:var(--ink-soft);font-weight:700;font-size:.8rem;display:grid;
  place-items:center;font-variant-numeric:tabular-nums;transition:all .15s ease}
.quicknav .qnum svg{width:15px;height:15px}
.quicknav a.part .qnum{border-color:var(--gold);color:var(--gold)}
.quicknav a.done .qnum{border-color:var(--accent);background:var(--accent);color:#fff}
.quicknav .qn-final .qnum{border-color:var(--primary);color:var(--primary-deep)}
.quicknav .qlbl{flex:1;min-width:0}

/* Subject color + background emblem */
body{--subj:var(--primary)}
body.subj-psy{--subj:#7A52E6}
body.subj-info{--subj:#12A98B}
.subject-hero{position:relative;overflow:hidden}
.subject-hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 380px at 92% -40%, color-mix(in srgb,var(--subj) 13%, transparent), transparent 70%)}
.hero-emblem{position:absolute;right:-26px;top:50%;transform:translateY(-50%);width:300px;height:300px;
  color:var(--subj);opacity:.08;pointer-events:none;z-index:0}
.hero-emblem svg{width:100%;height:100%}
.subject-hero .wrap{position:relative;z-index:1}
@media(max-width:640px){ .hero-emblem{width:210px;height:210px;right:-54px} }
.subj-card{position:relative;overflow:hidden}
.subj-card .card-emblem{position:absolute;right:-16px;bottom:-16px;width:118px;height:118px;
  color:var(--subj,var(--primary));opacity:.07;pointer-events:none}
.subj-card.s-psy{--subj:#7A52E6}.subj-card.s-info{--subj:#12A98B}
.subj-card>*{position:relative;z-index:1}

/* Steps background icons */
.step{position:relative;overflow:hidden}
.step .step-bg{position:absolute;right:-10px;bottom:-14px;width:104px;height:104px;color:var(--primary);
  opacity:.08;pointer-events:none}
.step>.n,.step>h4,.step>p{position:relative;z-index:1}

/* Nav dropdown */
.nav-dd{position:relative}
.nav-dd-btn{display:inline-flex;align-items:center;gap:5px;background:none;border:none;cursor:pointer;
  color:var(--ink-soft);font-weight:500;font-size:.95rem;font-family:var(--sans);padding:8px 14px;border-radius:999px;white-space:nowrap}
.nav-dd-btn:hover{background:var(--paper)}
.nav-dd-btn .chev{width:15px;height:15px;transition:transform .2s ease}
.nav-dd.open .nav-dd-btn{background:var(--paper)}
.nav-dd.open .nav-dd-btn .chev{transform:rotate(180deg)}
.nav-dd-menu{position:absolute;right:0;top:calc(100% + 6px);min-width:214px;background:var(--paper);
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);padding:6px;display:none;z-index:70}
.nav-dd.open .nav-dd-menu{display:block;animation:fade .18s ease}
.nav-dd-menu a{display:flex;align-items:center;gap:9px;padding:9px 11px;border-radius:8px;color:var(--ink-soft);
  font-size:.9rem;font-weight:600}
.nav-dd-menu a:hover{background:var(--primary-soft);color:var(--primary-deep);text-decoration:none}
.nav-dd-menu a small{display:block;font-weight:500;font-size:.74rem;color:var(--faint)}
.nav-dd-menu .dd-head{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);
  font-weight:700;padding:6px 11px 4px}
@media(max-width:560px){ .nav-dd-menu{min-width:188px} }
.exam-papers{margin:4px 0 22px;padding:16px 18px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r)}
.exam-papers .block-label{margin:0 0 12px}

/* ---------- Error report (floating, under audio) ---------- */
.fab-report{background:var(--paper);color:var(--ink-soft);border:1px solid var(--line);padding:12px}
.fab-report:hover{border-color:var(--wrong)}
.fab-report .ico{width:19px;height:19px;color:var(--wrong)}
.report-pop{position:fixed;right:16px;bottom:84px;z-index:88;width:302px;max-width:88vw;background:var(--paper);
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);padding:16px;display:none}
.report-pop.show{display:block;animation:fade .2s ease}
.report-pop .rp-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:3px}
.report-pop .rp-head b{font-size:1rem}
.report-pop .rp-head .x{background:none;border:none;cursor:pointer;color:var(--muted);font-size:1.1rem;line-height:1;padding:2px 4px}
.report-pop .rp-sub{font-size:.83rem;color:var(--muted);margin:0 0 10px;line-height:1.45}
.report-pop textarea{width:100%;min-height:88px;border:1px solid var(--line);border-radius:10px;padding:10px;
  font-family:var(--sans);font-size:.92rem;line-height:1.45;resize:vertical;margin-bottom:10px;background:var(--paper-2);color:var(--ink)}
.report-pop textarea:focus{outline:none;border-color:var(--primary)}
.report-pop .rp-done{display:none;margin-top:10px;color:var(--accent);font-weight:600;font-size:.9rem;text-align:center}
.report-pop .rp-done.show{display:block}
body.cookie-open .report-pop{bottom:150px}

/* dropdown z-index fix — menu was rendering under the sticky study bar */
.site-head{z-index:100}
.studybar{z-index:90}
.nav-dd-menu{z-index:140}

/* "Lecție parcursă" — subtle green when active */
.btn-done{background:var(--accent-soft);border-color:#BFE8DD;color:#0E7C66}
.btn-done:hover{background:#DCF2EB;border-color:var(--accent);color:#0E7C66}
.btn-done .ico{color:var(--accent)}
.exam-sec .fh .ico{width:26px;height:26px;color:var(--primary)}
.exam-sec .dl-row{margin-top:14px}
/* Neuroștiințe — subject color (rose) */
body.subj-neuro{--subj:#D14D86}
.subj-card.s-neuro{--subj:#D14D86}