/* =========================================================
   BIZU EBOOKS — estilos
   ========================================================= */

:root {
  --bg: #ffffff;
  --fg: #0a0a0a;
  --muted: #6a6a6a;
  --line: #e6e6e6;
  --soft: #f4f4f4;
  --card: #ffffff;
  --inv-bg: #0a0a0a;
  --inv-fg: #fafafa;
  --scrim: rgba(0, 0, 0, .45);
  --shadow: 0 24px 60px -24px rgba(0, 0, 0, .28);
  --radius: 6px;
  --wrap: 1200px;
  --header-h: 68px;
  --display: 'Anton', Impact, 'Arial Narrow Bold', sans-serif;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0a0a0a;
  --fg: #f2f2f2;
  --muted: #9b9b9b;
  --line: #242424;
  --soft: #141414;
  --card: #101010;
  --inv-bg: #f2f2f2;
  --inv-fg: #0a0a0a;
  --scrim: rgba(0, 0, 0, .7);
  --shadow: 0 24px 60px -24px rgba(0, 0, 0, .9);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
  overflow-x: hidden;
}
body.lock { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; }
[hidden] { display: none !important; }
::selection { background: var(--fg); color: var(--bg); }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
#app:focus { outline: none; }
#app [id] { scroll-margin-top: calc(var(--header-h) + 24px); }
.cta-row { display: flex; align-items: center; justify-content: space-between; gap: 24px 48px; flex-wrap: wrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--fg); color: var(--bg); padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }

.display { font-family: var(--display); font-weight: 400; text-transform: uppercase; letter-spacing: .01em; line-height: .95; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.muted { color: var(--muted); }

/* ---------- Topbar ---------- */
.topbar { background: var(--inv-bg); color: var(--inv-fg); font-size: 13px; transition: background-color .25s, color .25s; }
.topbar__in { display: flex; justify-content: space-between; gap: 16px; padding-top: 8px; padding-bottom: 8px; }
.topbar strong { letter-spacing: .06em; }
.topbar__right { opacity: .7; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background-color .25s, border-color .25s;
}
.header__in { height: var(--header-h); display: flex; align-items: center; gap: 28px; }

.logo { display: inline-flex; align-items: center; flex: none; }
.logo img { height: 40px; width: auto; }
.logo--lg img { height: 60px; }
.logo__dark { display: none !important; }
[data-theme="dark"] .logo__light { display: none !important; }
[data-theme="dark"] .logo__dark { display: block !important; }

.nav { display: flex; gap: 4px; }
.nav a { position: relative; padding: 8px 12px; font-size: 14px; font-weight: 500; color: var(--muted); border-radius: var(--radius); transition: color .15s; }
.nav a:hover, .nav a.active { color: var(--fg); }
.nav a.active::after { content: ''; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px; background: var(--fg); }

.actions { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.icon-btn {
  position: relative; width: 40px; height: 40px; display: inline-grid; place-items: center;
  border-radius: 50%; transition: background-color .15s;
}
.icon-btn:hover { background: var(--soft); }
.badge {
  position: absolute; top: 3px; right: 1px; min-width: 18px; height: 18px; padding: 0 5px;
  display: grid; place-items: center; border-radius: 9px;
  background: var(--fg); color: var(--bg); font-size: 11px; font-weight: 700; line-height: 1;
}
.menu-btn { display: none; }

/* Botão de modo noturno */
.theme-toggle { padding: 4px; margin: 0 6px; border-radius: 999px; }
.theme-toggle__track {
  position: relative; display: flex; align-items: center; justify-content: space-between;
  width: 64px; height: 32px; padding: 0 8px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--soft); transition: background-color .25s, border-color .25s;
}
.theme-toggle__track svg { width: 15px; height: 15px; position: relative; z-index: 1; transition: color .25s; }
.theme-toggle__knob {
  position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%;
  background: var(--fg); transition: transform .3s cubic-bezier(.4, 1.4, .5, 1), background-color .25s;
}
.theme-toggle__sun { color: var(--bg); }
.theme-toggle__moon { color: var(--muted); }
[data-theme="dark"] .theme-toggle__knob { transform: translateX(32px); }
[data-theme="dark"] .theme-toggle__sun { color: var(--muted); }
[data-theme="dark"] .theme-toggle__moon { color: var(--bg); }
.theme-toggle:hover .theme-toggle__track { border-color: var(--fg); }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 22px; border-radius: var(--radius);
  background: var(--fg); color: var(--bg); border: 1px solid var(--fg);
  font-size: 15px; font-weight: 600; white-space: nowrap;
  transition: transform .15s, background-color .2s, color .2s, opacity .2s;
}
.btn:hover { opacity: .85; }
.btn:active { transform: translateY(1px); }
.btn--ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn--ghost:hover { opacity: 1; border-color: var(--fg); }
.btn--sm { height: 36px; padding: 0 14px; font-size: 14px; }
.btn--lg { height: 54px; padding: 0 28px; font-size: 16px; }
.btn--block { width: 100%; }
.btn svg { width: 18px; height: 18px; }
.btn[disabled] { opacity: .4; pointer-events: none; }

.link { font-weight: 600; display: inline-flex; align-items: center; gap: 6px; border-bottom: 1px solid currentColor; padding-bottom: 1px; }
.link svg { width: 16px; height: 16px; transition: transform .2s; }
.link:hover svg { transform: translateX(3px); }

/* ---------- Formulários ---------- */
.field { display: grid; gap: 6px; }
.field label, .label { font-size: 13px; font-weight: 600; }
.input, .select, .textarea {
  width: 100%; height: 46px; padding: 0 14px; border-radius: var(--radius);
  background: var(--bg); border: 1px solid var(--line); outline: none;
  transition: border-color .15s, background-color .25s;
}
.textarea { height: auto; min-height: 130px; padding: 12px 14px; resize: vertical; }
.select { appearance: none; padding-right: 36px; background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
.input:focus, .select:focus, .textarea:focus { border-color: var(--fg); }
.input::placeholder, .textarea::placeholder { color: var(--muted); }
.form-grid { display: grid; gap: 16px; }
.form-grid--2 { grid-template-columns: 1fr 1fr; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--muted); }
.check input { margin-top: 4px; accent-color: var(--fg); width: 16px; height: 16px; flex: none; }

/* ---------- Seções ---------- */
.section { padding: 88px 0; }
.section--tight { padding: 56px 0; }
.section--soft { background: var(--soft); transition: background-color .25s; }
.section--inv { background: var(--inv-bg); color: var(--inv-fg); transition: background-color .25s, color .25s; }
.section__head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
.section__head h2 { font-size: clamp(34px, 5vw, 52px); }
.section__head p { color: var(--muted); max-width: 520px; margin-top: 10px; }

.page-head { padding: 64px 0 40px; border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(44px, 8vw, 88px); margin-top: 10px; }
.page-head p { color: var(--muted); max-width: 620px; margin-top: 14px; font-size: 17px; }

.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); padding: 24px 0 0; }
.crumbs a:hover { color: var(--fg); }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 88px; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(54px, 9vw, 116px); margin: 16px 0 24px; }
.hero h1 .outline { color: transparent; -webkit-text-stroke: 2px var(--fg); }
.hero__lead { font-size: 19px; color: var(--muted); max-width: 520px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 36px; margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--line); }
.hero__stats strong { display: block; font-family: var(--display); font-size: 34px; font-weight: 400; line-height: 1; }
.hero__stats span { font-size: 13px; color: var(--muted); }

.hero__books { position: relative; height: 480px; }
.hero__books .cover { position: absolute; width: 230px; box-shadow: var(--shadow); transition: transform .5s cubic-bezier(.2, .8, .2, 1); }
.hero__books .cover:nth-child(1) { left: 0; top: 70px; transform: rotate(-8deg); }
.hero__books .cover:nth-child(2) { left: 50%; top: 0; transform: translateX(-50%); z-index: 2; }
.hero__books .cover:nth-child(3) { right: 0; top: 90px; transform: rotate(7deg); }
.hero__books:hover .cover:nth-child(1) { transform: rotate(-12deg) translateX(-14px); }
.hero__books:hover .cover:nth-child(3) { transform: rotate(11deg) translateX(14px); }

/* ---------- Faixa rolante ---------- */
.marquee { background: var(--inv-bg); color: var(--inv-fg); overflow: hidden; padding: 18px 0; transition: background-color .25s, color .25s; }
.marquee__track { display: flex; width: max-content; animation: marquee 40s linear infinite; }
.marquee__track span { font-family: var(--display); font-size: 28px; text-transform: uppercase; padding: 0 28px; white-space: nowrap; }
.marquee__track span::after { content: '✦'; font-size: 16px; margin-left: 56px; vertical-align: middle; opacity: .5; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Capas tipográficas ---------- */
.cover {
  container-type: inline-size;
  position: relative; aspect-ratio: 2 / 3; overflow: hidden; border-radius: 3px 6px 6px 3px;
  background: #0a0a0a; color: #fafafa;
  box-shadow: inset 4px 0 0 rgba(255, 255, 255, .06), 0 1px 0 rgba(0, 0, 0, .04);
}
.cover__in { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: space-between; padding: 9cqw 9cqw 8cqw 11cqw; }
.cover::before { /* lombada */
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4%; z-index: 1;
  background: linear-gradient(90deg, rgba(0, 0, 0, .35), transparent);
}
.cover__cat { font: 600 5cqw/1.2 var(--sans); letter-spacing: .14em; text-transform: uppercase; opacity: .7; position: relative; }
.cover__title { font: 400 12.5cqw/0.98 var(--display); text-transform: uppercase; position: relative; word-break: break-word; hyphens: auto; }
.cover__foot { display: flex; justify-content: space-between; align-items: end; font: 600 4.6cqw/1.2 var(--sans); position: relative; }
.cover__brand { font: 400 7cqw/1 var(--display); letter-spacing: .02em; }
.cover__tags { position: absolute; top: 8px; right: 8px; display: flex; flex-direction: column; align-items: end; gap: 4px; z-index: 2; }
.labels { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.label { display: inline-block; padding: 2px 8px; font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; background: var(--fg); color: var(--bg); border: 1px solid var(--fg); border-radius: 3px; }
.label--line { background: transparent; color: var(--fg); }
.tag { display: inline-block; padding: 3px 8px; font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; background: #fafafa; color: #0a0a0a; border-radius: 3px; }
.tag--inv { background: #0a0a0a; color: #fafafa; }

/* variações */
.cover--2 { background: #fafafa; color: #0a0a0a; border: 1px solid #d9d9d9; }
.cover--2::before { background: linear-gradient(90deg, rgba(0, 0, 0, .08), transparent); }
.cover--2 .tag { background: #0a0a0a; color: #fafafa; }
.cover--3 { background: repeating-linear-gradient(-45deg, #0a0a0a 0 12px, #181818 12px 24px); }
.cover--3 .cover__title { background: #fafafa; color: #0a0a0a; padding: 3cqw 4cqw; margin: 0 -2cqw; }
.cover--4 { background: #fafafa; color: #0a0a0a; border: 1px solid #d9d9d9; }
.cover--4 .cover__foot { background: #0a0a0a; color: #fafafa; margin: 0 -9cqw -8cqw -11cqw; padding: 7cqw 9cqw 7cqw 11cqw; }
.cover--4 .tag { background: #0a0a0a; color: #fafafa; }
.cover--5 { background: #0a0a0a; background-image: linear-gradient(#ffffff14 1px, transparent 1px), linear-gradient(90deg, #ffffff14 1px, transparent 1px); background-size: 10% calc(100% / 15); }
.cover--5 .cover__title { border-top: 2px solid #fafafa; padding-top: 4cqw; }
.cover--6 { background: linear-gradient(180deg, #fafafa 0 46%, #0a0a0a 46% 100%); color: #fafafa; border: 1px solid #d9d9d9; }
.cover--6 .cover__cat { color: #0a0a0a; margin-bottom: auto; }
.cover--6 .cover__title { margin-bottom: 7cqw; }
.cover--6 .tag { background: #0a0a0a; color: #fafafa; }
[data-theme="dark"] .cover--2, [data-theme="dark"] .cover--4, [data-theme="dark"] .cover--6 { border-color: transparent; }
[data-theme="dark"] .cover--1, [data-theme="dark"] .cover--3, [data-theme="dark"] .cover--5 { outline: 1px solid #2a2a2a; outline-offset: -1px; }

/* ---------- Grade de produtos ---------- */
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 40px 28px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { display: flex; flex-direction: column; gap: 14px; }
.card__media { position: relative; display: block; }
.card__media .cover { transition: transform .35s cubic-bezier(.2, .8, .2, 1), box-shadow .35s; }
.card:hover .card__media .cover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card__fav {
  position: absolute; left: 8px; top: 8px; z-index: 3; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; background: #fafafa; color: #0a0a0a; opacity: 0; transition: opacity .2s, transform .2s;
}
.card__fav svg { width: 17px; height: 17px; }
.card:hover .card__fav, .card__fav.on, .card__fav:focus-visible { opacity: 1; }
.card__fav.on svg { fill: currentColor; }
.card__cat { font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.card__title { font-size: 16px; font-weight: 600; line-height: 1.3; margin-top: 4px; }
.card__title a:hover { text-decoration: underline; text-underline-offset: 3px; }
.card__author { font-size: 13px; color: var(--muted); margin-top: 2px; }
.card__row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; }
.card__add { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; transition: background-color .15s, color .15s, border-color .15s; }
.card__add:hover { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.card__add svg { width: 18px; height: 18px; }

.price { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.price strong { font-size: 18px; font-weight: 700; }
.price s { font-size: 13px; color: var(--muted); }
.price--lg strong { font-size: 34px; letter-spacing: -.02em; }
.price--lg s { font-size: 16px; }

.stars { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.stars i { font-style: normal; color: var(--fg); letter-spacing: 1px; }

/* ---------- Categorias ---------- */
.cats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.cat {
  position: relative; display: flex; flex-direction: column; gap: 10px; min-height: 190px; padding: 28px;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: background-color .2s, color .2s;
}
.cat:hover { background: var(--fg); color: var(--bg); }
.cat:hover .cat__desc, .cat:hover .cat__count { color: inherit; opacity: .7; }
.cat__count { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.cat__name { font-family: var(--display); font-size: 30px; text-transform: uppercase; line-height: 1; }
.cat__desc { font-size: 14px; color: var(--muted); max-width: 300px; }
.cat__arrow { position: absolute; right: 24px; top: 26px; transition: transform .2s; }
.cat:hover .cat__arrow { transform: translate(3px, -3px); }

.cat-block { display: grid; grid-template-columns: 1fr 1.3fr; gap: 40px; padding: 48px 0; border-bottom: 1px solid var(--line); align-items: center; }
.cat-block h2 { font-size: clamp(36px, 5vw, 56px); margin: 8px 0 12px; }
.cat-block p { color: var(--muted); margin-bottom: 22px; }
.cat-block__covers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cat-block__covers a { transition: transform .3s; }
.cat-block__covers a:hover { transform: translateY(-6px); }

/* ---------- Passos / features ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid currentColor; }
.step { padding: 32px 32px 0 0; }
.step + .step { padding-left: 32px; border-left: 1px solid color-mix(in srgb, currentColor 20%, transparent); }
.step__n { font-family: var(--display); font-size: 64px; line-height: 1; }
.step h3 { font-size: 20px; margin: 14px 0 8px; }
.step p { opacity: .7; }

.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature { display: flex; gap: 14px; align-items: flex-start; }
.feature svg { width: 22px; height: 22px; margin-top: 2px; }
.feature strong { display: block; font-size: 15px; }
.feature span { font-size: 14px; color: var(--muted); }

/* ---------- Combos ---------- */
.combos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.combo { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 18px; background: var(--card); transition: border-color .2s, background-color .25s; }
.combo:hover { border-color: var(--fg); }
.combo__covers { display: flex; padding: 10px 0 4px; }
.combo__covers .cover { width: 92px; flex: none; box-shadow: var(--shadow); }
.combo__covers .cover + .cover { margin-left: -38px; }
.combo h3 { font-family: var(--display); font-weight: 400; font-size: 30px; text-transform: uppercase; line-height: 1; }
.combo p { color: var(--muted); font-size: 14px; }
.combo ul { list-style: none; display: grid; gap: 6px; font-size: 14px; }
.combo li { display: flex; gap: 8px; }
.combo li svg { width: 16px; height: 16px; margin-top: 3px; }
.combo__save { align-self: flex-start; }

.banner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.banner h2 { font-size: clamp(40px, 6vw, 72px); }
.banner p { opacity: .7; font-size: 17px; margin: 16px 0 28px; max-width: 460px; }
.banner .btn { background: var(--inv-fg); color: var(--inv-bg); border-color: var(--inv-fg); }
.banner .btn--ghost { background: transparent; color: var(--inv-fg); border-color: color-mix(in srgb, var(--inv-fg) 30%, transparent); }
.banner__covers { display: flex; justify-content: center; }
.banner__covers .cover { width: 150px; box-shadow: 0 20px 50px -20px rgba(0, 0, 0, .6); }
.banner__covers .cover + .cover { margin-left: -50px; }
.banner__covers .cover:nth-child(2) { transform: translateY(-18px); z-index: 1; }

/* ---------- Depoimentos ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.quote { border-top: 2px solid var(--fg); padding-top: 24px; }
.quote p { font-size: 18px; line-height: 1.5; }
.quote footer { margin-top: 18px; font-size: 14px; }
.quote footer span { color: var(--muted); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 22px 0; font-size: 17px; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 26px; font-weight: 300; line-height: 1; transition: transform .2s; flex: none; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 48px 24px 0; color: var(--muted); }
.faq__group { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); padding: 36px 0 8px; }
.faq__group:first-child { padding-top: 0; }

/* ---------- Loja ---------- */
.shop { display: grid; grid-template-columns: 240px 1fr; gap: 48px; padding-top: 40px; padding-bottom: 96px; }
.filters { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
.filters summary { display: none; }
.filters__body { display: grid; gap: 28px; }
.filters fieldset { border: 0; display: grid; gap: 4px; }
.filters legend { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.opt { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 6px 10px; margin: 0 -10px; border-radius: var(--radius); font-size: 14px; cursor: pointer; }
.opt:hover { background: var(--soft); }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt span { color: var(--muted); font-size: 12px; }
.opt:has(input:checked) { background: var(--fg); color: var(--bg); }
.opt:has(input:checked) span { color: inherit; opacity: .7; }
.opt:has(input:focus-visible) { outline: 2px solid var(--fg); outline-offset: 2px; }
.shop__bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.shop__bar .select { width: auto; height: 40px; font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; font-size: 13px; }
.chip:hover { border-color: var(--fg); }
.chip svg { width: 14px; height: 14px; }

.empty { text-align: center; padding: 80px 24px; display: grid; justify-items: center; gap: 14px; }
.empty__icon { width: 72px; height: 72px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; }
.empty__icon svg { width: 28px; height: 28px; }
.empty h2 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 36px; }
.empty p { color: var(--muted); max-width: 420px; }

/* ---------- Produto ---------- */
.product { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; padding: 32px 0 80px; align-items: start; }
.product__media { position: sticky; top: calc(var(--header-h) + 32px); display: grid; gap: 16px; justify-items: center; padding: 48px; background: var(--soft); border-radius: var(--radius); transition: background-color .25s; }
.product__media .cover { width: min(340px, 100%); box-shadow: var(--shadow); }
.product h1 { font-size: clamp(40px, 5.4vw, 64px); margin: 12px 0 14px; }
.product__sub { font-size: 19px; color: var(--muted); }
.product__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin: 20px 0 28px; font-size: 14px; }
.product__buy { padding: 28px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; gap: 18px; }
.product__btns { display: flex; gap: 10px; flex-wrap: wrap; }
.product__btns .btn:first-child { flex: 1; min-width: 200px; }
.fav-btn { width: 54px; height: 54px; padding: 0; }
.fav-btn.on svg { fill: currentColor; }
.specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 28px 0; }
.specs div { border-left: 1px solid var(--line); padding-left: 14px; }
.specs dt { font-size: 12px; color: var(--muted); }
.specs dd { font-weight: 600; font-size: 15px; }
.guarantee { display: flex; gap: 14px; align-items: center; padding: 16px 18px; border: 1px dashed var(--line); border-radius: var(--radius); font-size: 14px; }
.guarantee svg { width: 26px; height: 26px; }
.guarantee span { color: var(--muted); }

.tabs { margin-top: 40px; }
.tabs__list { display: flex; gap: 28px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs__list button { padding: 14px 0; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs__list button[aria-selected="true"] { color: var(--fg); border-color: var(--fg); }
.tabs__panel { padding: 28px 0; }
.tabs__panel > p { color: var(--muted); font-size: 17px; }
.learn { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin-top: 24px; }
.learn li { display: flex; gap: 10px; }
.learn svg { width: 18px; height: 18px; margin-top: 3px; }
.toc { list-style: none; counter-reset: toc; }
.toc li { counter-increment: toc; display: flex; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.toc li::before { content: counter(toc, decimal-leading-zero); font-family: var(--display); color: var(--muted); }
.review { padding: 20px 0; border-bottom: 1px solid var(--line); }
.review header { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 6px; font-weight: 600; }
.review p { color: var(--muted); }
.rating-sum { display: flex; align-items: center; gap: 20px; margin-bottom: 8px; }
.rating-sum strong { font-family: var(--display); font-size: 56px; font-weight: 400; line-height: 1; }

/* ---------- Checkout ---------- */
.checkout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; padding: 40px 0 96px; align-items: start; }
.box { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: var(--card); transition: background-color .25s, border-color .25s; }
.box + .box { margin-top: 20px; }
.box h2 { font-size: 18px; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.box h2 b { width: 26px; height: 26px; border-radius: 50%; background: var(--fg); color: var(--bg); font-size: 13px; display: grid; place-items: center; }
.pay-opts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pay-opt { position: relative; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; cursor: pointer; display: grid; gap: 4px; transition: border-color .15s; }
.pay-opt input { position: absolute; opacity: 0; }
.pay-opt strong { font-size: 15px; }
.pay-opt span { font-size: 12px; color: var(--muted); }
.pay-opt:has(input:checked) { border-color: var(--fg); box-shadow: inset 0 0 0 1px var(--fg); }
.pay-opt:has(input:focus-visible) { outline: 2px solid var(--fg); outline-offset: 2px; }
.summary { position: sticky; top: calc(var(--header-h) + 24px); }
.line-item { display: grid; grid-template-columns: 48px 1fr auto; gap: 14px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.line-item .cover { width: 48px; }
.line-item .cover__in, .lib-item .cover__in { padding: 10cqw; }
.line-item .cover .cover__cat, .line-item .cover .cover__foot { display: none; }
.line-item .cover .cover__title { font-size: 15cqw; }
.line-item h4 { font-size: 14px; font-weight: 600; line-height: 1.3; }
.line-item small { font-size: 12px; color: var(--muted); }
.line-item__price { text-align: right; font-weight: 600; font-size: 14px; }
.line-item__remove { font-size: 12px; color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.line-item__remove:hover { color: var(--fg); }
.totals { display: grid; gap: 8px; padding: 18px 0; font-size: 14px; }
.totals div { display: flex; justify-content: space-between; }
.totals .total { font-size: 20px; font-weight: 700; padding-top: 12px; border-top: 1px solid var(--line); margin-top: 6px; }
.coupon { display: flex; gap: 8px; margin-top: 16px; }
.coupon .input { height: 42px; text-transform: uppercase; }
.coupon .btn { height: 42px; }
.coupon-on { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; padding: 10px 14px; background: var(--soft); border-radius: var(--radius); font-size: 13px; }
.secure { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 12px; color: var(--muted); margin-top: 14px; }
.secure svg { width: 14px; height: 14px; }

.success { text-align: center; padding: 96px 0; display: grid; justify-items: center; gap: 16px; }
.success__icon { width: 88px; height: 88px; border-radius: 50%; background: var(--fg); color: var(--bg); display: grid; place-items: center; }
.success__icon svg { width: 40px; height: 40px; stroke-width: 2.4; }
.success h1 { font-size: clamp(44px, 7vw, 72px); }
.success p { color: var(--muted); max-width: 520px; }
.order-code { font-family: ui-monospace, 'Cascadia Code', Consolas, monospace; padding: 8px 14px; border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---------- Biblioteca ---------- */
.lib { display: grid; gap: 16px; }
.lib-item { display: grid; grid-template-columns: 72px 1fr auto; gap: 20px; align-items: center; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); }
.lib-item .cover { width: 72px; }
.lib-item .cover .cover__cat, .lib-item .cover .cover__foot { display: none; }
.lib-item .cover .cover__title { font-size: 14cqw; }
.lib-item h3 { font-size: 16px; }
.lib-item p { font-size: 13px; color: var(--muted); }
.lib-item__btns { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding: 12px; border-bottom: 1px solid var(--line); }
.table td { padding: 16px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--fg); color: var(--bg); }
.seg { display: inline-flex; padding: 4px; border: 1px solid var(--line); border-radius: 999px; margin-bottom: 28px; }
.seg button { padding: 8px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--muted); }
.seg button[aria-selected="true"] { background: var(--fg); color: var(--bg); }

/* ---------- Suporte ---------- */
.help-search { position: relative; max-width: 620px; margin-top: 28px; }
.help-search svg { position: absolute; left: 18px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.help-search .input { height: 58px; padding-left: 50px; font-size: 17px; }
.help-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.help-card { text-align: left; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: grid; gap: 10px; align-content: start; transition: border-color .2s, transform .2s; }
.help-card:hover { border-color: var(--fg); transform: translateY(-3px); }
.help-card svg { width: 26px; height: 26px; }
.help-card strong { font-size: 16px; }
.help-card span { font-size: 14px; color: var(--muted); }
.support-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start; }
.channels { display: grid; gap: 12px; }
.channel { display: flex; gap: 16px; align-items: center; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s; }
a.channel:hover { border-color: var(--fg); }
.channel__ic { width: 44px; height: 44px; border-radius: 50%; background: var(--fg); color: var(--bg); display: grid; place-items: center; flex: none; }
.channel strong { display: block; font-size: 15px; }
.channel span { font-size: 14px; color: var(--muted); }
.lookup { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.lookup .input { flex: 1; min-width: 200px; text-transform: uppercase; }
.lookup-result { margin-top: 16px; }

/* ---------- Páginas de texto ---------- */
.prose { max-width: 720px; padding: 48px 0 96px; }
.prose h2 { font-size: 22px; margin: 36px 0 10px; }
.prose p, .prose li { color: var(--muted); margin-bottom: 12px; }
.prose ul { padding-left: 20px; }
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.values div { padding: 32px 32px 0 0; }
.values div + div { padding-left: 32px; border-left: 1px solid var(--line); }
.values h3 { font-family: var(--display); font-weight: 400; font-size: 28px; text-transform: uppercase; margin-bottom: 10px; }
.values p { color: var(--muted); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 72px 0 32px; margin-top: 0; }
.footer__top { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; }
.footer__brand p { color: var(--muted); margin: 20px 0 28px; max-width: 360px; }
.newsletter label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 10px; }
.newsletter__row { display: flex; gap: 8px; max-width: 420px; }
.newsletter .input { flex: 1; }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer__cols h4 { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; font-weight: 600; }
.footer__cols a { display: block; padding: 5px 0; font-size: 14px; }
.footer__cols a:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

/* ---------- Carrinho (drawer) ---------- */
.scrim { position: fixed; inset: 0; background: var(--scrim); z-index: 60; animation: fade .2s; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 61; width: min(420px, 100%);
  background: var(--bg); border-left: 1px solid var(--line);
  display: flex; flex-direction: column; transform: translateX(100%); visibility: hidden;
  transition: transform .35s cubic-bezier(.2, .8, .2, 1), visibility 0s .35s;
}
.drawer.open { transform: none; visibility: visible; transition: transform .35s cubic-bezier(.2, .8, .2, 1); }
.drawer__head { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; border-bottom: 1px solid var(--line); }
.drawer__head h2 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 28px; }
.drawer__body { flex: 1; overflow-y: auto; padding: 8px 24px; }
.drawer__foot { padding: 20px 24px 24px; border-top: 1px solid var(--line); }
.drawer__foot .totals { padding-top: 0; }
.drawer .empty { padding: 64px 0; }

/* ---------- Busca ---------- */
.search { position: fixed; inset: 0; z-index: 70; background: var(--scrim); animation: fade .15s; }
.search__panel { background: var(--bg); border-bottom: 1px solid var(--line); padding: 24px 0; max-height: 85vh; overflow-y: auto; animation: drop .25s cubic-bezier(.2, .8, .2, 1); }
.search__form { display: flex; align-items: center; gap: 14px; border-bottom: 2px solid var(--fg); padding-bottom: 12px; }
.search__form svg { width: 24px; height: 24px; }
.search__form input { flex: 1; background: none; border: 0; outline: none; font-size: 24px; font-weight: 500; min-width: 0; }
.search__form input::-webkit-search-cancel-button { display: none; }
.kbd { font-size: 12px; font-weight: 600; padding: 4px 8px; border: 1px solid var(--line); border-radius: 4px; color: var(--muted); }
.search__results { display: grid; gap: 4px; padding-top: 16px; }
.search__hint { color: var(--muted); font-size: 14px; padding: 8px 0; }
.search__hint .chips { margin-top: 12px; }
.s-item { display: grid; grid-template-columns: 40px 1fr auto; gap: 14px; align-items: center; padding: 10px; margin: 0 -10px; border-radius: var(--radius); }
.s-item:hover, .s-item:focus-visible { background: var(--soft); }
.s-item .cover { width: 40px; }
.s-item .cover > * { display: none; }
.s-item strong { display: block; font-size: 15px; }
.s-item span { font-size: 13px; color: var(--muted); }
.s-item mark { background: var(--fg); color: var(--bg); padding: 0 2px; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 80; background: var(--scrim); display: grid; place-items: center; padding: 16px; animation: fade .15s; }
.modal__box { position: relative; width: min(640px, 100%); max-height: 88vh; overflow-y: auto; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px; animation: pop .25s cubic-bezier(.2, .8, .2, 1); }
.modal__close { position: absolute; right: 12px; top: 12px; }
.modal h2 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 36px; line-height: 1; margin: 8px 0 14px; }
.modal .sample p { color: var(--muted); margin-bottom: 14px; font-family: Georgia, 'Times New Roman', serif; font-size: 17px; line-height: 1.75; }
.modal .sample h3 { font-size: 18px; margin: 24px 0 10px; }
.fade-out { position: relative; }
.fade-out::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 90px; background: linear-gradient(transparent, var(--bg)); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 90; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--fg); color: var(--bg); padding: 14px 20px; border-radius: var(--radius); font-size: 14px; font-weight: 500;
  display: flex; align-items: center; gap: 10px; max-width: calc(100% - 32px); box-shadow: var(--shadow);
  transition: opacity .25s, transform .25s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast svg { width: 18px; height: 18px; }

@keyframes fade { from { opacity: 0; } }
@keyframes drop { from { transform: translateY(-16px); opacity: 0; } }
@keyframes pop { from { transform: scale(.97); opacity: 0; } }

/* animação de entrada das páginas */
#app > * { animation: enter .4s cubic-bezier(.2, .8, .2, 1); }
@keyframes enter { from { opacity: 0; transform: translateY(8px); } }

/* =========================================================
   Responsivo
   ========================================================= */
@media (max-width: 1080px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .help-cards { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .nav a { padding: 8px 9px; }
}

@media (max-width: 920px) {
  .menu-btn { display: inline-grid; margin-left: -8px; }
  .header__in { gap: 12px; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%; z-index: 39; max-height: calc(100vh - var(--header-h)); overflow-y: auto;
    flex-direction: column; gap: 0; padding: 8px 16px 20px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: all .2s;
  }
  .nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 14px 8px; font-size: 18px; color: var(--fg); border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav a.active::after { display: none; }
  .nav a.active { font-weight: 700; }
  .topbar__right { display: none; }

  .hero__grid, .banner, .product, .checkout, .support-grid, .cat-block, .footer__top { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 64px; }
  .hero__books { height: 360px; max-width: 460px; width: 100%; margin: 0 auto; }
  .hero__books .cover { width: 170px; }
  .product { gap: 32px; }
  .product__media { position: static; padding: 32px; }
  .product__media .cover { width: 220px; }
  .summary, .filters { position: static; }
  .shop { grid-template-columns: 1fr; gap: 24px; }
  .filters { border: 1px solid var(--line); border-radius: var(--radius); }
  .filters summary { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; font-weight: 600; cursor: pointer; list-style: none; }
  .filters summary::-webkit-details-marker { display: none; }
  .filters summary::after { content: '+'; font-size: 22px; font-weight: 300; }
  .filters[open] summary::after { content: '−'; }
  .filters__body { padding: 4px 16px 20px; grid-template-columns: 1fr 1fr; }
  .filters__body > :first-child { grid-column: 1 / -1; }
  .cats { grid-template-columns: repeat(2, 1fr); }
  .combos, .quotes { grid-template-columns: 1fr; }
  .steps, .values { grid-template-columns: 1fr; }
  .step, .values div { padding: 28px 0 0 !important; border-left: 0 !important; }
  .step + .step, .values div + div { border-top: 1px solid color-mix(in srgb, currentColor 20%, transparent); margin-top: 28px; }
  .banner__covers { display: none; }
  .section { padding: 64px 0; }
  .section__head { flex-direction: column; align-items: start; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .hide-sm { display: none; }
  .actions { gap: 0; }
  .theme-toggle { margin: 0 2px; }
  .topbar { font-size: 12px; }
  .topbar__in { justify-content: center; text-align: center; }
  .grid, .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 16px; }
  .card__title { font-size: 15px; }
  .card__fav { opacity: 1; }
  .cats { grid-template-columns: 1fr; }
  .cat { min-height: 0; padding: 22px; }
  .cat__name { font-size: 26px; }
  .hero__books { height: 290px; }
  .hero__books .cover { width: 136px; }
  .hero__stats { gap: 24px; }
  .hero__lead { font-size: 17px; }
  .hero__cta .btn { flex: 1; }
  .specs { grid-template-columns: 1fr 1fr; }
  .learn { grid-template-columns: 1fr; }
  .form-grid--2 { grid-template-columns: 1fr; }
  .pay-opts { grid-template-columns: 1fr; }
  .help-cards { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .lib-item { grid-template-columns: 56px 1fr; }
  .lib-item .cover { width: 56px; }
  .lib-item__btns { grid-column: 1 / -1; justify-content: stretch; }
  .lib-item__btns .btn { flex: 1; }
  .modal__box { padding: 32px 20px 24px; }
  .box { padding: 20px; }
  .faq details p { padding-right: 0; }
  .filters__body { grid-template-columns: 1fr; }
  .search__form input { font-size: 19px; }
  .product__btns .btn:first-child { min-width: 0; }
  .newsletter__row { flex-direction: column; }
  .page-head { padding: 44px 0 32px; }
  .combo { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}