/* ==========================================================================
   Livraria Revista Pleb's
   1. Tokens  2. Base  3. Layout  4. Components  5. Sections  6. Media queries
   ========================================================================== */

/* 1. Tokens
   ========================================================================== */
:root {
  /* Brand */
  --color-navy: #17264a;
  --color-navy-dark: #0d1630;
  --color-gold: #c99a1e;
  --color-gold-text: #8a6a10;
  --color-gold-light: #e3bf55;

  /* Text */
  --color-ink: #111827;
  --color-text: #1c2230;
  --color-text-body: #2d3444;
  --color-text-nav: #3a4252;
  --color-text-muted: #4a5263;
  --color-text-subtle: #5b6374;
  --color-on-navy-soft: #d4d9e4;
  --color-on-navy-muted: #b9c1d3;

  /* Surfaces & lines */
  --color-white: #ffffff;
  --color-surface: #f5f6f8;
  --color-selected: #f1f4fa;
  --color-border: #e3e6ec;
  --color-border-option: #d5d9e1;
  --color-border-input: #c7ccd6;

  /* Type */
  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;

  /* Layout */
  --container-wide: 1120px;
  --container-mid: 860px;
  --container-narrow: 800px;
  --gutter: 24px;
  --section-space: 88px;
  --header-offset: 76px;
}

/* 2. Base
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-text);
  font-family: var(--font-sans);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-navy);
}

/* :where() keeps this at element specificity, so any class colour wins on hover */
a:where(:hover) {
  color: var(--color-navy-dark);
}

input:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

section[id],
.book[id] {
  scroll-margin-top: var(--header-offset);
}

/* 3. Layout
   ========================================================================== */
.container {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.container--mid {
  max-width: var(--container-mid);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 4. Components
   ========================================================================== */

/* Typography helpers */
.eyebrow {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-gold-text);
}

.eyebrow--tight {
  letter-spacing: 0.16em;
}

.eyebrow--light {
  color: var(--color-gold-light);
}

.section-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 42px;
  line-height: 1.15;
  color: var(--color-ink);
}

.lead {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.note {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-subtle);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn--outline {
  border: 1.5px solid var(--color-navy);
  background: var(--color-white);
  color: var(--color-navy);
}

.btn--light {
  background: var(--color-white);
  color: var(--color-navy);
}

.btn--sm {
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
}

.btn--block {
  display: flex;
}

.btn:disabled {
  min-height: 56px;
  background: var(--color-border);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

/* Price block */
.price {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.price__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-text-subtle);
}

.price__value {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 600;
  color: var(--color-ink);
}

/* Selectable option card (radio) */
.option {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--color-border-option);
  background: var(--color-white);
  cursor: pointer;
}

.option--top {
  align-items: flex-start;
  gap: 14px;
}

/* Inset shadow adds the second pixel of border without shifting layout */
.option:has(input:checked) {
  border-color: var(--color-navy);
  box-shadow: inset 0 0 0 1px var(--color-navy);
  background: var(--color-selected);
}

.option__input {
  flex: none;
  width: 22px;
  height: 22px;
  margin: 0;
  accent-color: var(--color-navy);
}

.option__text {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.option__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
}

.option--top .option__title {
  font-size: 16px;
}

.option__badge {
  align-self: flex-start;
  padding: 3px 8px;
  background: var(--color-navy);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.option__sub {
  font-size: 14px;
  color: var(--color-text-subtle);
}

.option--top .option__sub {
  line-height: 1.4;
}

.option__price {
  flex: none;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
}

/* Form fields */
.fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fieldset__legend {
  padding: 0 0 12px;
}

.field-label {
  font-size: 14px;
  color: var(--color-text-nav);
}

.input {
  min-width: 0;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--color-border-input);
  font-family: var(--font-sans);
  font-size: 17px;
  color: var(--color-ink);
}

/* Panel (white card) */
.panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 32px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

/* 5. Sections
   ========================================================================== */

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-navy);
  text-decoration: none;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}

.site-nav__link {
  font-size: 15px;
  color: var(--color-text-nav);
  text-decoration: none;
}

/* Hero */
.hero__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 56px;
  padding-top: 72px;
  padding-bottom: 64px;
}

.hero__content {
  flex: 1 1 440px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.hero__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 54px;
  line-height: 1.08;
  color: var(--color-ink);
}

.hero__title em {
  font-weight: 400;
}

.hero__lead {
  font-size: 20px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 6px;
}

.hero__byline {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
}

.hero__covers {
  flex: 1 1 420px;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.hero__cover {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--color-text-muted);
  text-decoration: none;
}

.hero__cover img {
  width: 100%;
}

.hero__cover-caption {
  font-size: 14px;
  text-align: center;
}

/* Quotes carousel */
.quotes {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.quotes__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: 40px;
  padding-bottom: 28px;
  text-align: center;
}

.quotes__stage {
  width: 100%;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  touch-action: pan-y;
  user-select: none;
}

.quotes__slide {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 1;
  transform: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
  will-change: opacity, transform;
}

.quotes__slide[data-phase="out"] {
  opacity: 0;
  transform: translateX(calc(-40px * var(--dir, 1)));
  transition: opacity 0.38s ease, transform 0.38s ease;
}

.quotes__slide[data-phase="pre"] {
  opacity: 0;
  transform: translateX(calc(40px * var(--dir, 1)));
  transition: none;
}

.quotes__text {
  margin: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 26px;
  line-height: 1.45;
  color: var(--color-text);
}

.quotes__text[data-size="md"] {
  font-size: 22px;
}

.quotes__text[data-size="sm"] {
  font-size: 18px;
}

.quotes__source {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-decoration: none;
}

.quotes__dots {
  display: flex;
  align-items: center;
}

.quotes__dot {
  width: 28px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.quotes__dot span {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border-input);
}

.quotes__dot[aria-current="true"] span {
  background: var(--color-navy);
}

/* Books */
.books-intro {
  padding-top: var(--section-space);
  padding-bottom: 40px;
}

.books-intro .lead {
  max-width: 680px;
}

.book {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 56px;
  padding-top: 40px;
  padding-bottom: 40px;
}

.book--reverse {
  flex-wrap: wrap-reverse;
  padding-bottom: 96px;
}

.book__cover {
  flex: 1 1 340px;
  min-width: 0;
  max-width: 460px;
}

.book__cover img {
  width: 100%;
}

.book__body {
  flex: 1 1 460px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.book__meta {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-text-subtle);
}

.book__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 40px;
  line-height: 1.1;
  color: var(--color-ink);
}

.book__subtitle {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 21px;
  color: var(--color-gold-text);
}

.book__quote {
  margin: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 24px;
  line-height: 1.4;
  color: var(--color-ink);
}

.book__desc,
.book__synopsis p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.65;
  color: var(--color-text-body);
}

.book__more {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.book__toggle {
  align-self: flex-start;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-navy);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  cursor: pointer;
}

.book__synopsis {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px 0 4px;
  border-top: 1px solid var(--color-border);
}

.book__synopsis p {
  font-size: 17px;
}

.book__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 16px;
  color: var(--color-text-body);
}

.book__points li {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.book__bullet {
  color: var(--color-gold);
}

.book__buy {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 20px;
  padding-top: 8px;
}

/* Offer */
.offer {
  background: var(--color-navy);
  color: var(--color-white);
}

.offer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 48px;
  padding-top: 80px;
  padding-bottom: 80px;
}

.offer__content {
  flex: 1 1 460px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.offer__title {
  line-height: 1.12;
  color: inherit;
}

.offer__lead {
  color: var(--color-on-navy-soft);
}

.offer__pricing {
  flex: 1 1 340px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.offer__old {
  font-size: 18px;
  color: var(--color-on-navy-muted);
  text-decoration: line-through;
}

.offer__price {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 600;
  line-height: 1;
}

.offer__saving {
  font-size: 15px;
  color: var(--color-gold-light);
}

.offer__cta {
  min-height: 56px;
  margin-top: 8px;
  font-size: 17px;
}

/* Central questions */
.questions__inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.questions__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.questions__group {
  display: flex;
  flex-direction: column;
}

.questions__title {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 26px;
  color: var(--color-ink);
}

.questions__item {
  margin: 0;
  padding: 18px 0;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.45;
  color: var(--color-text-body);
}

.questions__item:last-child {
  border-bottom: 1px solid var(--color-border);
}

/* Author */
.author {
  border-top: 1px solid var(--color-border);
}

.author__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.author__photo {
  width: 100%;
}

.author__links {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.author__links .btn {
  display: flex;
  padding: 0 20px;
}

/* Checkout */
.checkout {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.checkout__inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.checkout__layout {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 28px;
}

.checkout__form {
  flex: 999 1 560px;
  gap: 28px;
}

.checkout__summary {
  flex: 1 1 320px;
  gap: 16px;
}

.checkout__step {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checkout__payments {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.cep {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cep__input {
  flex: 1 1 200px;
}

.cep__button {
  flex: 0 0 auto;
  padding: 0 24px;
}

.cep__button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.note[data-state="erro"] {
  color: #9b1c1c;
}

.frete-endereco {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 16px;
  border-left: 3px solid var(--color-gold);
  background: var(--color-surface);
}

.frete-endereco[hidden] {
  display: none;
}

.frete-endereco__rua {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
}

.frete-endereco__cidade {
  font-size: 14px;
  color: var(--color-text-subtle);
}

.frete-opcoes {
  gap: 10px;
}

.frete-opcoes .option {
  padding: 14px 18px;
}

.frete-opcoes .option__price {
  font-size: 16px;
}

/* Dados do cliente */
.dados__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.campo {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.campo--full {
  grid-column: 1 / -1;
}

.campo[hidden] {
  display: none;
}

.campo__opcional {
  color: var(--color-text-subtle);
}

.campo__erro {
  margin: 0;
  font-size: 13px;
  color: #9b1c1c;
}

.campo__erro:empty {
  display: none;
}

.input[aria-invalid="true"] {
  border-color: #9b1c1c;
  box-shadow: inset 0 0 0 1px #9b1c1c;
}

@media (max-width: 520px) {
  .dados__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.option--disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

[data-finalizar]:disabled {
  opacity: 0.6;
  cursor: progress;
}

.summary__note[data-state="erro"] {
  color: #9b1c1c;
}

.panel[hidden] {
  display: none;
}

/* Tela do PIX */
.pix {
  flex: 1 1 100%;
  gap: 16px;
}

.pix:focus {
  outline: none;
}

.pix__titulo {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--color-ink);
}

.pix__pedido {
  margin: 0;
  color: var(--color-text-body);
}

.pix__conteudo {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  align-items: flex-start;
}

.pix__qr {
  flex: none;
  width: 240px;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

.pix__copia {
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.pix__codigo {
  min-height: 0;
  padding: 12px 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.4;
  word-break: break-all;
  resize: none;
}

.pix__status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0 0;
  font-weight: 600;
  color: var(--color-navy);
}

.pix__spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border-option);
  border-top-color: var(--color-navy);
  border-radius: 50%;
  animation: pix-giro 0.9s linear infinite;
}

@keyframes pix-giro {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .pix__spinner { animation: none; }
}

.pix__final {
  padding: 20px 24px;
  border-left: 3px solid var(--color-gold);
  background: var(--color-surface);
}

.pix__final[hidden] {
  display: none;
}

.pix__final-texto {
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
  color: var(--color-ink);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.summary__row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 16px;
  color: var(--color-text-body);
}

.summary__divider {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--color-border);
}

.summary__total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.summary__total-label {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
}

.summary__total-value {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--color-ink);
}

.summary__note {
  line-height: 1.5;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 32px;
  padding-bottom: 32px;
}

.site-footer__copy {
  font-size: 14px;
  color: var(--color-text-muted);
}

.site-footer__links {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

/* 6. Media queries
   ========================================================================== */
@media (max-width: 640px) {
  :root {
    --gutter: 20px;
    --section-space: 64px;
  }

  .hero__inner {
    gap: 40px;
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .hero__title {
    font-size: clamp(34px, 9vw, 44px);
  }

  .section-title {
    font-size: clamp(30px, 7.5vw, 36px);
  }

  .book__title {
    font-size: 32px;
  }

  .offer__inner {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .offer__price {
    font-size: 52px;
  }

  .panel {
    padding: 24px 20px;
  }

  .author__links {
    grid-template-columns: 1fr;
  }
}

/* Header nav wraps to a second line below ~440px */
@media (max-width: 460px) {
  :root {
    --header-offset: 124px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .quotes__slide,
  .quotes__slide[data-phase] {
    transition: none;
  }
}