/* ============================================================
   EDITORA NIGREDO — Design System
   Paleta: tinta quase-negra + dourado sol niger + pergaminho
   Tipografia: Fraunces (display) / Newsreader (corpo) / IBM Plex Mono (ficha técnica)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,400&family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;1,6..72,400&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg: #0b0d14;
  --surface: #12141d;
  --surface-2: #191c28;
  --line: rgba(201,160,54,.16);
  --line-strong: rgba(201,160,54,.32);
  --gold: #c9a036;
  --gold-bright: #e7c968;
  --parchment: #ece4d3;
  --parchment-dim: #b9b2a0;
  --muted: #837c6c;
  --wine: #7a2632;
  --wine-bright: #9c3140;

  --display: 'Fraunces', serif;
  --body: 'Newsreader', serif;
  --mono: 'IBM Plex Mono', monospace;

  --container: 1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--parchment);
  font-family:var(--body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}

::selection{background:var(--gold);color:#0b0d14;}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--gold-bright);
  outline-offset:3px;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important; transition-duration:.001ms !important;}
}

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}

/* ---------- sol niger mark ---------- */
.sol{
  width:14px;height:14px;border-radius:50%;
  background:var(--gold);
  display:inline-block;
  flex:none;
}
.sol.ring{
  background:transparent;
  border:1.5px solid var(--gold);
}
.sol.wine{ background:var(--wine-bright); }

/* ---------- header ---------- */
header.site{
  border-bottom:1px solid var(--line);
  position:sticky;top:0;
  background:rgba(11,13,20,.88);
  backdrop-filter:blur(8px);
  z-index:50;
}
header.site .bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:22px 0;
}
.brand{
  display:flex;align-items:center;gap:12px;
  font-family:var(--display);
  font-size:22px;
  letter-spacing:.02em;
  font-weight:500;
}
.brand-logo{
  height:38px;width:auto;flex:none;
}
.brand small{
  display:block;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  margin-top:2px;
}
nav.main{display:flex;gap:32px;align-items:center;}
nav.main a{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--parchment-dim);
  transition:color .2s;
}
nav.main a:hover, nav.main a.active{color:var(--gold-bright);}
.cart-link{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--line-strong);
  padding:8px 14px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
}
.cart-link:hover{border-color:var(--gold);}
#cart-count{color:var(--gold-bright);}

.mobile-toggle{display:none;background:none;border:none;color:var(--parchment);font-size:22px;cursor:pointer;}

@media (max-width:760px){
  nav.main{
    position:fixed;inset:0 0 0 auto;width:78%;height:100vh;
    background:var(--surface);
    flex-direction:column;align-items:flex-start;
    padding:100px 28px 28px;gap:26px;
    transform:translateX(100%);
    transition:transform .3s ease;
    border-left:1px solid var(--line);
  }
  nav.main.open{transform:translateX(0);}
  .mobile-toggle{display:block;}
}

/* ---------- footer ---------- */
footer.site{
  border-top:1px solid var(--line);
  margin-top:120px;
  padding:56px 0 40px;
}
footer.site .cols{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;
}
footer.site h4{
  font-family:var(--mono);font-size:11px;letter-spacing:.15em;
  text-transform:uppercase;color:var(--muted);margin:0 0 14px;
}
footer.site p, footer.site a{color:var(--parchment-dim);font-size:14px;}
footer.site a:hover{color:var(--gold-bright);}
footer.site .legal{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:11px;color:var(--muted);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
}
@media (max-width:700px){
  footer.site .cols{grid-template-columns:1fr;gap:32px;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  padding:14px 26px;
  border:1px solid var(--gold);
  background:transparent;color:var(--gold-bright);
  cursor:pointer;transition:all .2s;
}
.btn:hover{background:var(--gold);color:#0b0d14;}
.btn.solid{background:var(--gold);color:#0b0d14;}
.btn.solid:hover{background:var(--gold-bright);border-color:var(--gold-bright);}
.btn.wine{border-color:var(--wine-bright);color:var(--wine-bright);}
.btn.wine:hover{background:var(--wine-bright);color:#0b0d14;}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.btn:disabled:hover{background:transparent;color:var(--gold-bright);}

/* ---------- hero ---------- */
.hero{
  padding:96px 0 80px;
  position:relative;
  overflow:hidden;
}
.hero .eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);display:flex;align-items:center;gap:10px;margin-bottom:26px;
}
.hero h1{
  font-family:var(--display);
  font-weight:400;
  font-size:clamp(38px,6vw,64px);
  line-height:1.06;
  margin:0 0 26px;
  max-width:15ch;
}
.hero h1 em{font-style:italic;color:var(--gold-bright);}
.hero p.lede{
  font-size:19px;color:var(--parchment-dim);max-width:52ch;margin:0 0 36px;
}
.hero .actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-mark{
  position:absolute;right:-60px;top:-40px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, var(--gold) 0%, rgba(201,160,54,.08) 55%, transparent 70%);
  opacity:.5;pointer-events:none;
}

/* ---------- section scaffolding ---------- */
section{padding:80px 0;}
.section-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  border-bottom:1px solid var(--line);
  padding-bottom:22px;margin-bottom:44px;flex-wrap:wrap;gap:16px;
}
.section-head h2{
  font-family:var(--display);font-weight:400;font-size:clamp(26px,3.4vw,36px);margin:0;
}
.section-head .tag{
  font-family:var(--mono);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--muted);
}

/* ---------- book grid ---------- */
.book-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.book-grid.compact{grid-template-columns:repeat(4,1fr);}
@media (max-width:900px){ .book-grid, .book-grid.compact{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .book-grid, .book-grid.compact{grid-template-columns:1fr;} }

.book-card{
  background:var(--bg);
  padding:28px 24px 26px;
  display:flex;flex-direction:column;
  transition:background .25s;
}
.book-card:hover{background:var(--surface);}
.book-card .folio{
  font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.1em;
  margin-bottom:16px;
}
.book-cover{
  aspect-ratio:2/3;width:100%;
  background:linear-gradient(155deg,var(--surface-2),var(--surface));
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;position:relative;overflow:hidden;
}
.book-cover .sol{width:34px;height:34px;}
.book-cover img{width:100%;height:100%;object-fit:cover;}
.book-card h3{
  font-family:var(--display);font-weight:500;font-size:19px;margin:0 0 6px;line-height:1.25;
}
.book-card .author{
  font-size:13px;color:var(--muted);margin-bottom:10px;font-style:italic;
}
.book-card .excerpt{
  font-size:14px;color:var(--parchment-dim);flex:1;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.book-card .row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.price{font-family:var(--mono);font-size:16px;color:var(--gold-bright);}
.price .was{
  text-decoration:line-through;color:var(--muted);font-size:12px;margin-right:8px;
}
.add-btn{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--line-strong);background:none;color:var(--parchment);
  padding:9px 14px;cursor:pointer;transition:all .2s;white-space:nowrap;
}
.add-btn:hover{border-color:var(--gold);color:var(--gold-bright);}
.add-btn.added{border-color:var(--gold);color:var(--gold-bright);}

/* ---------- product page ---------- */
.product{
  display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;
  padding:64px 0 100px;
}
@media (max-width:800px){ .product{grid-template-columns:1fr;gap:40px;} }
.product-cover{
  aspect-ratio:2/3;
  background:linear-gradient(155deg,var(--surface-2),var(--surface));
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  position:sticky;top:110px;align-self:start;
}
.product-cover img{width:100%;height:100%;object-fit:cover;}
.product-cover .sol{width:56px;height:56px;}
.product-info .eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
  margin-bottom:16px;
}
.product-info h1{
  font-family:var(--display);font-weight:400;font-size:clamp(30px,4vw,42px);margin:0 0 8px;line-height:1.1;
}
.product-info .author{color:var(--parchment-dim);font-style:italic;margin-bottom:28px;}
.product-info .desc{font-size:17px;color:var(--parchment-dim);margin-bottom:32px;max-width:60ch;}
.spec-table{
  width:100%;border-collapse:collapse;margin-bottom:36px;font-family:var(--mono);font-size:13px;
}
.spec-table tr{border-bottom:1px solid var(--line);}
.spec-table td{padding:11px 0;color:var(--parchment-dim);}
.spec-table td:first-child{color:var(--muted);width:40%;text-transform:uppercase;letter-spacing:.08em;font-size:11px;}
.buy-box{
  border:1px solid var(--line-strong);padding:28px;display:flex;flex-direction:column;gap:18px;
}
.buy-box .price-row{display:flex;align-items:baseline;justify-content:space-between;}
.buy-box .price{font-size:28px;}
.qty-row{display:flex;align-items:center;gap:14px;}
.qty-row .stepper{display:flex;border:1px solid var(--line-strong);}
.qty-row .stepper button{
  background:none;border:none;color:var(--parchment);width:36px;height:36px;cursor:pointer;font-family:var(--mono);
}
.qty-row .stepper button:hover{color:var(--gold-bright);}
.qty-row .stepper span{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-family:var(--mono);border-left:1px solid var(--line-strong);border-right:1px solid var(--line-strong);}

/* ---------- cart / checkout ---------- */
.checkout-steps{
  display:flex;gap:0;margin-bottom:56px;border:1px solid var(--line);
}
.checkout-steps .step{
  flex:1;padding:20px 22px;border-right:1px solid var(--line);
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
}
.checkout-steps .step:last-child{border-right:none;}
.checkout-steps .step .num{
  display:flex;align-items:center;gap:10px;text-transform:uppercase;color:var(--muted);margin-bottom:6px;
}
.checkout-steps .step.active{background:var(--surface);}
.checkout-steps .step.active .num{color:var(--gold-bright);}
.checkout-steps .step .phase{color:var(--parchment-dim);font-style:italic;font-family:var(--body);font-size:14px;}

.cart-table{width:100%;border-collapse:collapse;margin-bottom:40px;}
.cart-table th{
  font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);
  text-align:left;padding-bottom:14px;border-bottom:1px solid var(--line-strong);
}
.cart-table td{padding:20px 0;border-bottom:1px solid var(--line);vertical-align:middle;}
.cart-item-name{font-family:var(--display);font-size:17px;}
.cart-item-author{font-size:13px;color:var(--muted);font-style:italic;}
.remove-link{font-family:var(--mono);font-size:11px;color:var(--muted);cursor:pointer;background:none;border:none;text-decoration:underline;padding:0;}
.remove-link:hover{color:var(--wine-bright);}
.cart-summary{
  margin-left:auto;max-width:340px;display:flex;flex-direction:column;gap:12px;
}
.cart-summary .line{display:flex;justify-content:space-between;font-family:var(--mono);font-size:14px;color:var(--parchment-dim);}
.cart-summary .line.total{
  font-size:20px;color:var(--parchment);border-top:1px solid var(--line-strong);padding-top:14px;margin-top:6px;
}
.cart-summary .line.total .price{font-size:20px;}
.empty-state{
  text-align:center;padding:100px 20px;border:1px dashed var(--line-strong);
}
.empty-state p{color:var(--parchment-dim);margin-bottom:28px;}

form.checkout-form{display:flex;flex-direction:column;gap:20px;max-width:520px;}
form.checkout-form label{
  display:flex;flex-direction:column;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);
}
form.checkout-form input, form.checkout-form textarea{
  background:var(--surface);border:1px solid var(--line-strong);color:var(--parchment);
  padding:13px 14px;font-family:var(--body);font-size:15px;
}
form.checkout-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
@media (max-width:560px){form.checkout-form .row2{grid-template-columns:1fr;}}

.note-box{
  border-left:2px solid var(--gold);background:var(--surface);padding:18px 20px;font-size:14px;color:var(--parchment-dim);margin-top:8px;
}

/* ---------- generic page header (sobre/contato) ---------- */
.page-hero{padding:72px 0 40px;border-bottom:1px solid var(--line);}
.page-hero h1{font-family:var(--display);font-weight:400;font-size:clamp(32px,5vw,48px);margin:0 0 18px;}
.page-hero p{color:var(--parchment-dim);max-width:60ch;font-size:18px;}

.prose{max-width:68ch;}
.prose p{color:var(--parchment-dim);font-size:17px;margin-bottom:22px;}
.prose h2{font-family:var(--display);font-weight:400;font-size:26px;margin:44px 0 18px;}

.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:56px 0;}
@media (max-width:760px){.values-grid{grid-template-columns:1fr;}}
.values-grid .cell{background:var(--bg);padding:32px 28px;}
.values-grid .cell .sol{margin-bottom:18px;}
.values-grid .cell h3{font-family:var(--display);font-size:18px;font-weight:500;margin:0 0 10px;}
.values-grid .cell p{color:var(--parchment-dim);font-size:14px;margin:0;}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding:64px 0 100px;}
@media (max-width:800px){.contact-grid{grid-template-columns:1fr;gap:40px;}}
.contact-info .item{border-top:1px solid var(--line);padding:20px 0;}
.contact-info .item h4{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 8px;}
.contact-info .item a, .contact-info .item p{font-family:var(--display);font-size:18px;margin:0;}

.toast{
  position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--gold);color:#0b0d14;font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  padding:14px 22px;opacity:0;pointer-events:none;transition:all .3s;z-index:200;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}