@font-face{font-family:'Montserrat';font-style:normal;font-weight:500 800;font-display:swap;src:url(fonts/montserrat-latin.woff2) format('woff2')}
@font-face{font-family:'Inter';font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/inter-latin.woff2) format('woff2')}
:root{
  --bg:#08080A;--side:#0B0B0E;--s1:#111114;--s2:#17171B;--s3:#1E1E23;
  --line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.14);
  --tx:#F2F2F5;--tx2:#B4B4BF;--tx3:#83838F;
  --ac:#B087F7;--ac-hi:#C7ADFB;--ac-lo:#8F63E8;--ac-soft:rgba(176,135,247,.10);--ac-line:rgba(176,135,247,.38);
  --ok:#34d399;--ko:#fb7185;
  --fh:'Montserrat','Segoe UI',system-ui,sans-serif;--fb:'Inter','Segoe UI',system-ui,sans-serif;
  --sbw:260px
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--tx);font-family:var(--fb);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
::selection{background:rgba(176,135,247,.35);color:#fff}
a{color:var(--ac);text-decoration:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--ac);outline-offset:2px}
h1,h2,h3{font-family:var(--fh);letter-spacing:-.005em}
h1{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:800;letter-spacing:-.015em;margin:4px 0 8px}
h2{font-size:1.1rem;font-weight:700;margin:26px 0 10px}
.sub{color:var(--tx2);margin:0 0 22px;max-width:70ch}

/* layout com menu lateral */
.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sbw);flex:none;background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:30}
.sb-brand{padding:20px 18px 18px;border-bottom:1px solid var(--line)}
.sb-brand .plate{background:#fff;border-radius:12px;padding:8px 10px;display:block}
.sb-brand img{display:block;width:100%;height:auto;max-height:112px;object-fit:contain}
.sb-body{flex:1;overflow-y:auto;padding:14px 12px 20px}
.sb-section{color:var(--tx3);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600;padding:18px 12px 8px}
.sb-nav{position:relative;display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;color:var(--tx2);font-weight:600;font-size:.87rem}
.sb-nav:hover{background:var(--s2);color:var(--tx)}
.sb-nav.on{background:var(--ac-soft);color:#fff}
.sb-nav.on::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;background:var(--ac)}
.sb-nav .bd{margin-left:auto;border:1px solid var(--line2);border-radius:6px;font-size:.66rem;padding:1px 7px;color:var(--tx2)}
.sb-foot{border-top:1px solid var(--line);padding:14px 18px;color:var(--tx3);font-size:.78rem;word-break:break-all}
.sb-foot b{display:block;color:var(--tx2);font-weight:600;margin-bottom:2px}
.content{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:none;align-items:center;gap:12px;padding:10px 14px;background:rgba(8,8,10,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topbar .menu-btn{background:transparent;border:1px solid var(--line2);color:var(--tx);border-radius:8px;width:40px;height:40px;font-size:1.2rem}
.topbar .tl{font-family:var(--fh);font-weight:800}
.topbar .tl b{color:var(--ac)}
main{width:100%;max-width:900px;margin:0 auto;padding:28px 24px 56px;flex:1}
.scrim{display:none}

/* quadros e cartoes: cinza chapado, borda fina */
.card,.cap,.face,.livro{background:var(--s1);border:1px solid var(--line);border-radius:12px}
.card{padding:18px;margin-bottom:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:18px}
.livro{overflow:hidden;display:flex;flex-direction:column;transition:border-color .15s}
.livro:hover{border-color:var(--ac-line)}
.livro img{width:100%;aspect-ratio:3/4;object-fit:cover;background:var(--s2)}
.livro .in{padding:12px 14px}
.livro .t{font-family:var(--fh);font-weight:700;font-size:.92rem;color:var(--tx);line-height:1.3}
.livro .a{color:var(--tx3);font-size:.8rem;margin-top:2px}
.row{display:flex;gap:12px;align-items:center;justify-content:space-between}
.cap{display:flex;gap:14px;align-items:center;padding:14px 16px;margin-bottom:10px}
.cap .n{min-width:36px;height:36px;border-radius:50%;background:var(--ac-soft);border:1px solid var(--ac-line);display:grid;place-items:center;font-family:var(--fh);font-weight:700;color:var(--ac)}
.cap .tt{flex:1;font-weight:600}
.cap .tt small{display:block;color:var(--tx3);font-weight:400}
.lock{color:var(--tx3);font-size:.8rem}
.btn{background:var(--ac);color:#150d2b;border:0;border-radius:10px;padding:12px 18px;font-weight:700;font-family:var(--fb);transition:background .15s}
.btn:hover{background:var(--ac-hi)}
.btn.sec{background:transparent;color:var(--tx);border:1px solid var(--line2)}
.btn.sec:hover{border-color:var(--ac-line);color:var(--ac)}
.btn.g{background:#fff;color:#222;display:flex;gap:10px;align-items:center;justify-content:center;width:100%}
.btn.ok{background:var(--ok);color:#052e16}
.btn.err{background:var(--ko);color:#450a0a}
.btn[disabled]{opacity:.5}

/* login */
.login{max-width:400px;margin:7vh auto 0;padding:0 20px;text-align:center}
.login .plate{background:#fff;border-radius:16px;padding:12px 16px;display:inline-block;margin-bottom:14px}
.login .plate img{display:block;width:190px;max-width:60vw;height:auto}
.login form{display:grid;gap:10px;margin-top:14px;text-align:left}
input,select{width:100%;padding:13px 14px;border-radius:10px;border:1px solid var(--line2);background:var(--s2);color:var(--tx);font:inherit}
input:focus,select:focus{border-color:var(--ac-line);outline:0}
.ou{color:var(--tx3);margin:16px 0;font-size:.85rem}
.msg{margin-top:10px;font-size:.9rem;color:var(--ko)}
.msg.ok{color:var(--ok)}

/* estudo */
.face{padding:24px;min-height:220px}
.face .lab,.lab{font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;color:var(--ac);margin-bottom:8px;font-weight:700}
.face .q{font-family:var(--fh);font-size:1.25rem;font-weight:700;line-height:1.35}
.blk{margin-top:16px}
.blk p{margin:4px 0 0}
.quote{border-left:2px solid var(--ac);padding-left:14px;color:#dcd6f7}
.quote small{display:block;color:var(--tx3);margin-top:4px}
.prog{height:6px;background:var(--s3);border-radius:99px;overflow:hidden;margin:6px 0 16px}
.prog i{display:block;height:100%;background:var(--ac)}
.acts{display:flex;gap:10px;margin-top:16px}
.acts .btn{flex:1}
.pill{display:inline-block;background:var(--s3);color:var(--tx2);padding:3px 10px;border-radius:99px;font-size:.74rem;margin-bottom:8px}
label{display:block;margin:12px 0 6px;color:var(--tx2);font-size:.9rem}
.chk{display:flex;gap:10px;align-items:center;padding:8px 0;margin:0;color:var(--tx)}
.chk input{width:auto}
.empty{color:var(--tx3);text-align:center;padding:30px 0}
.back{display:inline-block;margin-bottom:6px;color:var(--tx3);font-size:.85rem}
.back:hover{color:var(--ac)}

@media(max-width:900px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-100%);transition:transform .22s ease;width:280px}
  body.open .sidebar{transform:none}
  .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .2s;z-index:25}
  body.open .scrim{opacity:1;pointer-events:auto}
  .topbar{display:flex}
  main{padding:20px 16px 48px}
}

/* linha do tempo no menu (trilha dos capitulos) */
.tl-box{margin:6px 0 4px;padding:12px 10px 8px;border:1px solid var(--line);border-radius:12px;background:var(--s1)}
.tl-topo{padding:0 4px 10px;display:flex;flex-direction:column;gap:2px}
.tl-topo b{font-family:var(--fh);font-size:.84rem;color:var(--tx);line-height:1.3}
.tl-topo span{font-size:.74rem;color:var(--tx3)}
.tl-list{position:relative;padding-left:22px}
.tl-list::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;border-radius:2px;background:rgba(255,255,255,.14)}
.tl-parte{font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--tx3);padding:10px 0 4px;font-weight:600}
.tl-item{position:relative;display:block;padding:6px 6px 6px 0;font-size:.8rem;color:var(--tx2);line-height:1.35;border-radius:6px}
.tl-item:hover{color:var(--tx)}
.tl-item.trav{opacity:.5}
.tl-item .tl-no{position:absolute;left:-19px;top:9px;width:14px;height:14px;box-sizing:border-box;border-radius:50%;border:2px solid rgba(var(--tl-rgb),.6);background:#0E0E12;z-index:2;transition:transform .18s,box-shadow .18s}
.tl-item .tl-no.a{background:linear-gradient(90deg,var(--tl-c) 50%,#0E0E12 50%);border-color:var(--tl-c)}
.tl-item .tl-no.f{background:var(--tl-c);border-color:var(--tl-c)}
.tl-item:hover .tl-no{transform:scale(1.15);box-shadow:0 0 0 4px rgba(var(--tl-rgb),.18),0 0 12px rgba(var(--tl-rgb),.45)}
.tl-item.aqui{color:#fff;font-weight:600}
.tl-item.aqui .tl-no{animation:tlpulso 2.4s ease-in-out infinite}
@keyframes tlpulso{0%,100%{box-shadow:0 0 0 0 rgba(var(--tl-rgb),.5)}50%{box-shadow:0 0 0 6px rgba(var(--tl-rgb),0)}}

/* landing */
.lp{min-height:100vh;background:var(--bg)}
.lp-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;max-width:1080px;margin:0 auto}
.lp-nav .plate{background:#fff;border-radius:10px;padding:5px 8px;display:block}
.lp-nav img{display:block;height:48px;width:auto}
.lp-wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.lp-hero{text-align:center;padding:40px 0 10px}
.lp-hero h1{font-size:clamp(1.9rem,5vw,3rem);line-height:1.12;margin:0 auto 14px;max-width:18ch;font-weight:800}
.lp-hero h1 em{font-style:normal;color:var(--ac)}
.lp-hero p{color:var(--tx2);font-size:1.05rem;max-width:56ch;margin:0 auto 20px}
.lp-demo{margin:24px auto 8px;max-width:620px}
.lp-demo .tag{display:inline-block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ac);border:1px solid var(--ac-line);border-radius:99px;padding:4px 12px;margin-bottom:6px}
.lp-sec{padding:44px 0}
.lp-sec h2{text-align:center;font-size:clamp(1.3rem,3vw,1.8rem);margin:0 0 6px}
.lp-sec .sub{text-align:center;margin:0 auto 26px}
.lp-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.lp-3 .card b{display:block;font-family:var(--fh);color:var(--ac);font-size:1.4rem;margin-bottom:4px}
.lp-3 .card p{margin:4px 0 0;color:var(--tx2)}
.lp-livros{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.lp-livros img{width:150px;aspect-ratio:3/4;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.lp-planos{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;max-width:720px;margin:0 auto}
.lp-planos .card.pro{border-color:var(--ac-line)}
.lp-planos .preco{font-family:var(--fh);font-size:2rem;font-weight:800}
.lp-planos .preco small{font-size:.9rem;color:var(--tx3);font-weight:500}
.lp-planos ul{padding-left:18px;color:var(--tx2);margin:10px 0 16px}
.lp-faq details{background:var(--s1);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px}
.lp-faq summary{cursor:pointer;font-weight:600}
.lp-faq p{color:var(--tx2);margin:8px 0 0}
.lp-fim{text-align:center;padding:30px 20px 60px}
.lp-foot{border-top:1px solid var(--line);padding:22px 20px;text-align:center;color:var(--tx3);font-size:.82rem}
.lp-gate{max-width:620px;margin:0 auto;text-align:center}
.lp-gate h3{font-size:1.4rem;margin:0 0 8px}
.lp-gate p{color:var(--tx2)}
.lp-gate .btn{margin-top:10px}

/* vidro, bordas e brilho do Destruindo Flashcards */
body{background:radial-gradient(1100px 560px at 100% -10%,rgba(176,135,247,.10),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(143,99,232,.08),transparent 60%),var(--bg);background-attachment:fixed}
.sidebar{background:linear-gradient(180deg,rgba(18,17,24,.96) 0%,rgba(10,10,14,.97) 55%,rgba(7,7,10,.98) 100%);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:1px 0 0 rgba(255,255,255,.04),12px 0 40px rgba(0,0,0,.55)}
.sb-nav{border:1px solid transparent}
.sb-nav:hover{background:linear-gradient(180deg,#202029,#16161d);border-color:var(--line2)}
.sb-nav.on{background:linear-gradient(180deg,rgba(176,135,247,.16),rgba(176,135,247,.05));border-color:var(--ac-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.07),0 0 18px rgba(176,135,247,.14)}
.topbar{background:linear-gradient(180deg,rgba(16,13,22,.82),rgba(8,8,11,.72));-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2);box-shadow:0 1px 0 rgba(255,255,255,.04),0 10px 30px rgba(0,0,0,.45)}
.card,.cap,.livro,.tl-box,.rk-row,.kpi,.tro{background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.012));border:1px solid rgba(255,255,255,.09);border-radius:14px;-webkit-backdrop-filter:blur(14px) saturate(1.15);backdrop-filter:blur(14px) saturate(1.15);box-shadow:inset 0 1px 0 rgba(255,255,255,.07),0 12px 34px rgba(0,0,0,.4)}
.livro:hover,.cap:hover,.tro.ok:hover{border-color:var(--ac-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 10px 26px rgba(0,0,0,.4),0 0 24px rgba(176,135,247,.16)}
.sb-brand .plate{box-shadow:0 0 0 1px rgba(255,255,255,.18),0 8px 22px rgba(0,0,0,.5)}

/* telas de progresso */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:8px}
.kpi{--ac:#B087F7;padding:14px 12px;text-align:center;background:linear-gradient(145deg,color-mix(in srgb,var(--ac) 14%,transparent),rgba(255,255,255,.025) 60%);border-color:color-mix(in srgb,var(--ac) 36%,rgba(255,255,255,.06))}
.kpi:nth-child(2){--ac:#f5c26b}.kpi:nth-child(3){--ac:#f472b6}.kpi:nth-child(4){--ac:#7cc4ff}
.kpi b{display:block;font-family:var(--fh);font-size:1.7rem;line-height:1.1;color:color-mix(in srgb,var(--ac) 55%,#fff);font-variant-numeric:tabular-nums}
.kpi span{font-size:.74rem;color:#b9b5c8;letter-spacing:.02em}
.barra{height:10px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;margin:6px 0 4px}
.barra i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--ac-lo),var(--ac))}
.dias{display:flex;align-items:flex-end;gap:6px;height:110px;margin-top:10px}
.dias div{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:4px;font-size:.62rem;color:var(--tx3)}
.dias i{display:block;width:100%;max-width:22px;border-radius:5px 5px 2px 2px;background:linear-gradient(180deg,var(--ac),var(--ac-lo));min-height:3px}
.tros{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.tro{padding:16px;text-align:center;opacity:.5;filter:grayscale(.7)}
.tro.ok{opacity:1;filter:none;border-color:var(--ac-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 12px 34px rgba(0,0,0,.4),0 0 24px rgba(176,135,247,.14)}
.tro .medal{width:54px;height:54px;border-radius:50%;margin:0 auto 10px;display:grid;place-items:center;font-family:var(--fh);font-weight:800;font-size:1.1rem;color:#150d2b;background:linear-gradient(145deg,var(--ac-hi),var(--ac-lo))}
.tro b{display:block;font-family:var(--fh)}
.tro small{color:var(--tx3)}
.rk{display:grid;gap:8px}
.rk-row{display:flex;align-items:center;gap:14px;padding:12px 16px}
.rk-row.eu{border-color:var(--ac-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 22px rgba(176,135,247,.18)}
.rk-pos{min-width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-family:var(--fh);font-weight:800;background:var(--s3);color:var(--tx2)}
.rk-row:nth-child(1) .rk-pos{background:linear-gradient(145deg,#ffe29a,#e0a93a);color:#2a1c00}
.rk-row:nth-child(2) .rk-pos{background:linear-gradient(145deg,#f1f1f5,#a9a9b6);color:#1b1b20}
.rk-row:nth-child(3) .rk-pos{background:linear-gradient(145deg,#f0b48a,#b4713c);color:#2a1400}
.rk-nome{flex:1;font-weight:600}
.rk-pts{font-family:var(--fh);font-weight:700;color:var(--ac);font-variant-numeric:tabular-nums}
.sw{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0}
.sw input{display:none}
.sw .tg{width:46px;height:26px;border-radius:99px;background:var(--s3);border:1px solid var(--line2);position:relative;transition:background .2s;flex:none;cursor:pointer}
.sw .tg::after{content:"";position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .2s}
.sw input:checked+.tg{background:var(--ac-lo)}
.sw input:checked+.tg::after{transform:translateX(20px)}

/* titulos: mesma regra do Destruindo Flashcards, ultima palavra em destaque e leve sombra */
h1,h1.title{text-shadow:0 2px 14px rgba(176,135,247,.35)}
h2{text-shadow:0 2px 12px rgba(176,135,247,.22)}
h1.title .mg{background:linear-gradient(90deg,#EADCFF,#C7ADFB 35%,#B087F7 70%,#8F63E8);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none;filter:drop-shadow(0 2px 10px rgba(176,135,247,.5))}
.lp-hero h1 em{text-shadow:none}

/* marca no menu: sem quadro branco, menor e alinhada a esquerda, como no Destruindo Flashcards */
.sb-brand{padding:14px 18px 12px}
.sb-brand .plate,.lp-nav .plate,.login .plate{background:none;border-radius:0;padding:0;box-shadow:none;display:block}
.sb-brand img{width:124px;max-height:none;height:auto;object-fit:contain;margin:0;filter:drop-shadow(0 4px 14px rgba(176,135,247,.28))}
.lp-nav img{height:52px;width:auto;filter:drop-shadow(0 4px 14px rgba(176,135,247,.28))}
.login .plate{display:inline-block;margin-bottom:14px}
.login .plate img{width:200px;max-width:62vw;height:auto;filter:drop-shadow(0 6px 18px rgba(176,135,247,.3))}

/* submenus (linha do tempo): mais a direita e fonte menor, como no Destruindo Flashcards */
.tl-box{margin:4px 0 6px 22px;padding:6px 0 4px;border:0;background:none;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
.tl-topo{padding:0 4px 8px 6px}
.tl-topo b{font-size:.78rem}
.tl-topo span{font-size:.7rem}
.tl-list{padding-left:24px}
.tl-item{font-size:.74rem;padding:5px 6px 5px 0}
.tl-item .tl-no{left:-21px;top:8px;width:13px;height:13px}
.tl-parte{font-size:.58rem}

/* submenus recolhiveis: abrir um fecha o outro */
.sb-sec-h{display:flex;align-items:center;justify-content:space-between;width:100%;background:none;border:0;color:var(--tx3);font-family:var(--fb);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600;padding:16px 12px 8px;cursor:pointer;text-align:left}
.sb-sec-h:hover{color:var(--tx2)}
.sb-sec.open>.sb-sec-h{color:var(--ac)}
.sb-chev{width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);transition:transform .2s;margin-right:4px}
.sb-sec.open>.sb-sec-h .sb-chev{transform:rotate(45deg)}
.sb-sec-b{display:none}
.sb-sec.open>.sb-sec-b{display:block;animation:sbAbre .18s ease}
@keyframes sbAbre{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* botoes padronizados: mesma altura, fonte e acabamento em todas as telas */
.btn,.btn-padrao{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:12px;font-family:var(--fb);font-size:.9rem;font-weight:700;letter-spacing:.01em;line-height:1;white-space:nowrap;text-align:center;border:1px solid transparent;transition:transform .12s,box-shadow .2s,background .2s,border-color .2s}
.btn:not(.sec):not(.g):not(.ok):not(.err){background:linear-gradient(180deg,#C7ADFB,#B087F7 60%,#9C72EE);color:#150d2b;box-shadow:inset 0 1px 0 rgba(255,255,255,.35),0 8px 20px rgba(176,135,247,.28)}
.btn:not(.sec):not(.g):not(.ok):not(.err):hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 12px 26px rgba(176,135,247,.4)}
.btn:active{transform:translateY(1px)}
.btn.sec{background:rgba(255,255,255,.04);color:var(--tx);border-color:var(--line2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.btn.sec:hover{border-color:var(--ac-line);color:var(--ac);background:rgba(176,135,247,.08)}
.btn.g{min-height:48px}
.livro{display:flex;flex-direction:column;height:100%}
.livro>a{display:flex;flex-direction:column;flex:1;color:inherit}
.livro .in{padding:14px 16px 10px}
.livro .t{min-height:2.7em;font-size:.95rem}
.livro .in.act{padding:6px 16px 16px}
.livro .in.act .btn{width:100%}
.livro img{border-bottom:1px solid var(--line)}
.grid{align-items:stretch;gap:20px;grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}
.cap .btn,.row .btn{min-height:40px;padding:0 18px;font-size:.84rem}
.acts{gap:12px}

/* estado Adicionado: verde limpo, com marca de confirmacao desenhada em CSS */
.btn.add-ok{background:linear-gradient(180deg,rgba(52,211,153,.16),rgba(52,211,153,.07));color:#5eead4;color:#4ade9f;border-color:rgba(52,211,153,.5);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 0 18px rgba(52,211,153,.14)}
.btn.add-ok::before{content:"";width:5px;height:10px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translate(-1px,-1px);margin-right:4px}
.btn.add-ok:hover{background:linear-gradient(180deg,rgba(52,211,153,.24),rgba(52,211,153,.1));border-color:rgba(52,211,153,.75);color:#6ee7b7}

/* capas: mesmo tamanho, moldura branca */
.livro img{width:100%;aspect-ratio:600/860;object-fit:contain;background:#fff;border-bottom:1px solid var(--line)}
.lp-livros img{aspect-ratio:600/860;object-fit:contain;background:#fff;width:160px}

/* botoes do flashcard: finos, limpos e delicados (sem a base 3D grossa) */
.fc-stage .botoes-container .btn-certo,.fc-stage .botoes-container .btn-errado{
  flex:1;min-height:46px;padding:0 18px;border-radius:12px;font-family:var(--fb);font-size:.82rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;line-height:1;
  border:1px solid rgba(var(--tema-rgb),.55);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 6px 18px rgba(var(--tema-rgb),.18);
  transition:transform .14s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;position:relative;overflow:hidden}
.fc-stage .botoes-container .btn-certo{background:linear-gradient(180deg,rgba(var(--tema-rgb),.95),rgba(var(--tema-rgb),.78));color:#120a22}
.fc-stage .botoes-container .btn-errado{background:rgba(255,255,255,.04);color:var(--tema);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.fc-stage .botoes-container .btn-certo:hover,.fc-stage .botoes-container .btn-errado:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 10px 26px rgba(var(--tema-rgb),.34);border-color:rgba(var(--tema-rgb),.85)}
.fc-stage .botoes-container .btn-errado:hover{background:rgba(var(--tema-rgb),.12)}
.fc-stage .botoes-container .btn-certo:active,.fc-stage .botoes-container .btn-errado:active{transform:translateY(1px) scale(.99);box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 3px 10px rgba(var(--tema-rgb),.25)!important}
.fc-stage .botoes-container .btn-certo::after,.fc-stage .botoes-container .btn-errado::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at var(--rx,50%) var(--ry,50%),rgba(255,255,255,.35),transparent 55%);opacity:0;transition:opacity .35s}
.fc-stage .botoes-container .btn-certo:active::after,.fc-stage .botoes-container .btn-errado:active::after{opacity:1;transition:opacity 0s}
.fc-stage .botoes-container{gap:12px;margin-top:20px}
.fc-stage .card-container{border-right-width:3px;border-bottom-width:5px;border-top-width:2px;border-left-width:2px;border-radius:24px}

/* verso organizado: blocos com a paleta de cada livro, palavras-chave sublinhadas */
.vs-wrap{display:grid;gap:12px;margin:18px 0 4px;position:relative;z-index:10}
.vs{position:relative;border-radius:14px;padding:14px 16px 14px 18px;background:linear-gradient(160deg,color-mix(in srgb,var(--vc) 9%,transparent),rgba(255,255,255,.02) 70%);border:1px solid color-mix(in srgb,var(--vc) 26%,rgba(255,255,255,.06));box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
.vs::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--vc);box-shadow:0 0 10px color-mix(in srgb,var(--vc) 60%,transparent)}
.vs-h{display:flex;align-items:center;gap:8px;font-family:var(--fb);font-size:.68rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--vc);margin-bottom:6px}
.vs-h i{width:6px;height:6px;border-radius:50%;background:var(--vc);box-shadow:0 0 8px var(--vc)}
.vs-t{font-size:.95rem;line-height:1.55;color:#E9E7F2}
.vs-resp{padding:16px 18px 16px 20px}
.vs-resp .vs-t{font-size:1.02rem;color:#fff}
.vs-livro .vs-t{font-style:italic;color:#D8E3FF}
.vs-ref{margin-top:8px;font-size:.72rem;letter-spacing:.06em;color:color-mix(in srgb,var(--vc) 70%,#9a9aa8);font-weight:600}
mark.kw{background:none;color:color-mix(in srgb,var(--kw) 60%,#fff);font-weight:700;text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--kw) 65%,transparent);text-decoration-thickness:2px;text-underline-offset:3px}
@media(max-width:600px){.vs{padding:12px 13px 12px 16px}.vs-t{font-size:.9rem}.vs-resp .vs-t{font-size:.95rem}}