/* =========================================================
   NORTE DIESEL PEÇAS — design system
   Camadas (MESTRE.md VI.1): Tokens → Foundations → Components
   → Patterns → Sections → Utilities
   Tokens definidos por escrito em DESIGN.md antes deste arquivo.
   ========================================================= */

/* ---------- 1. TOKENS ---------- */
:root {
  --color-canvas: #f4f5f5;
  --color-canvas-alt: #ecedee;
  --color-surface: #ffffff;

  --color-action: #e4571f;
  --color-action-hover: #c7440f;
  --color-action-tint: #fce8dc;

  --color-ink: #14181b;
  --color-slate: #495157;
  --color-ash: #7a8288;
  --color-mist: #dce0e2;
  --color-fog: #ecedee;
  --color-line: rgba(20, 24, 27, 0.08);

  --color-error: #b3261e;
  --color-success: #1e7d4c;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --text-caption: 0.8125rem;
  --text-body: 1rem;
  --text-body-lg: 1.125rem;
  --text-heading-sm: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --text-heading-md: clamp(1.75rem, 1.4rem + 1.2vw, 2.125rem);
  --text-heading-lg: clamp(2.125rem, 1.6rem + 2.2vw, 3rem);
  --text-display: clamp(2.5rem, 1.9rem + 3vw, 4rem);

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;

  --tracking-tight-lg: -0.03em;
  --tracking-tight-md: -0.02em;
  --tracking-wide: 0.08em;

  --radius-pill: 999px;
  --radius-md: 12px;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;

  --shadow-cart: 0 20px 40px -20px rgba(20, 24, 27, 0.35);

  --max-width: 1200px;
  --duration: 180ms;
}

/* ---------- 2. FOUNDATIONS ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul { padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-action);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -48px;
  background: var(--color-ink);
  color: #fff;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  z-index: 100;
  transition: top var(--duration) ease;
}
.skip-link:focus { top: var(--space-2); }

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

/* ---------- 3. LAYOUT PRIMITIVES ---------- */
.container { width: 100%; max-width: var(--max-width); margin-inline: auto; padding-inline: var(--space-3); }
.section { padding-block: var(--space-6); }
.section--alt { background: var(--color-canvas-alt); }
.section-head { max-width: 640px; margin-bottom: var(--space-4); }
.section-head--center { margin-inline: auto; text-align: center; }
.stack { display: flex; flex-direction: column; gap: var(--space-2); }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.grid { display: grid; gap: var(--space-3); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--products { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

/* ---------- 4. TYPOGRAPHY ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-1);
  font-size: var(--text-caption); font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--color-action);
}
.display { font-size: var(--text-display); font-weight: var(--weight-light); letter-spacing: var(--tracking-tight-lg); line-height: 1.05; }
.heading-lg { font-size: var(--text-heading-lg); font-weight: var(--weight-light); letter-spacing: var(--tracking-tight-lg); line-height: 1.1; }
.heading-md { font-size: var(--text-heading-md); font-weight: var(--weight-medium); letter-spacing: var(--tracking-tight-md); line-height: 1.2; }
.heading-sm { font-size: var(--text-heading-sm); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-tight-md); line-height: 1.3; }
.body-lg { font-size: var(--text-body-lg); color: var(--color-slate); }
.body { font-size: var(--text-body); color: var(--color-slate); }
.caption { font-size: var(--text-caption); color: var(--color-ash); }
.mono { font-family: var(--font-mono); }

/* ---------- 5. COMPONENTS ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-1);
  padding: 14px 28px; border-radius: var(--radius-pill);
  font-size: var(--text-body); font-weight: var(--weight-medium); white-space: nowrap;
  transition: background-color var(--duration) ease, color var(--duration) ease, border-color var(--duration) ease, transform var(--duration) ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--color-action); color: #fff; border: 1px solid var(--color-action); }
.btn-primary:hover { background: var(--color-action-hover); border-color: var(--color-action-hover); }
.btn-outline { background: transparent; color: var(--color-ink); border: 1px solid var(--color-mist); }
.btn-outline:hover { border-color: var(--color-action); color: var(--color-action); }
.btn-sm { padding: 10px 20px; font-size: var(--text-caption); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius-pill);
  border: 1px solid var(--color-mist); background: var(--color-surface);
}
.btn-icon:hover { border-color: var(--color-action); color: var(--color-action); }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 245, 245, 0.94); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.header__row { display: flex; align-items: center; justify-content: space-between; padding-block: var(--space-2); gap: var(--space-3); }
.brand { display: flex; align-items: center; gap: var(--space-1); font-weight: var(--weight-semibold); font-size: var(--text-body-lg); letter-spacing: var(--tracking-tight-md); }
.brand__mark {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  background: var(--color-ink); color: var(--color-action);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--weight-semibold); flex-shrink: 0;
}
.nav { display: flex; align-items: center; gap: var(--space-4); }
.nav__links { display: flex; gap: var(--space-3); }
.nav__links a {
  text-decoration: none; font-size: var(--text-body); color: var(--color-slate);
  padding-block: var(--space-1); border-bottom: 2px solid transparent;
  transition: color var(--duration) ease, border-color var(--duration) ease;
}
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--color-ink); border-color: var(--color-action); }
.nav__actions { display: flex; align-items: center; gap: var(--space-2); }
.nav__toggle { display: none; flex-direction: column; gap: 5px; padding: var(--space-1); }
.nav__toggle span { width: 22px; height: 2px; background: var(--color-ink); border-radius: 2px; }

.cart-badge { position: relative; }
.cart-badge__count {
  position: absolute; top: -6px; right: -6px;
  min-width: 18px; height: 18px; padding: 0 4px;
  border-radius: var(--radius-pill); background: var(--color-action); color: #fff;
  font-size: 11px; font-weight: var(--weight-semibold);
  display: flex; align-items: center; justify-content: center;
}

/* Filtros (catálogo) */
.filters {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  padding: var(--space-2); background: var(--color-surface);
  border: 1px solid var(--color-line); border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}
.filters__group { display: flex; flex-direction: column; gap: 6px; min-width: 160px; flex: 1; }
.filters__group label { font-size: var(--text-caption); font-weight: var(--weight-medium); color: var(--color-slate); }
.filters select, .filters input {
  padding: 10px 14px; border-radius: var(--radius-md); border: 1px solid var(--color-mist); background: var(--color-canvas);
}
.filters__result { font-size: var(--text-caption); color: var(--color-ash); align-self: center; margin-left: auto; padding-top: var(--space-2); }

/* Card de produto */
.product-card {
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius-md);
  display: flex; flex-direction: column; overflow: hidden; height: 100%;
}
.product-card__media {
  aspect-ratio: 4 / 3; background: var(--color-fog);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-ash); flex-direction: column; gap: 4px; text-align: center; padding: var(--space-2);
  border-bottom: 1px solid var(--color-line);
}
.product-card__body { padding: var(--space-2); display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product-card__badges { display: flex; gap: 6px; flex-wrap: wrap; }
.product-card__name { font-size: var(--text-body); font-weight: var(--weight-medium); color: var(--color-ink); }
.product-card__sku { font-size: var(--text-caption); color: var(--color-ash); }
.product-card__price { font-size: var(--text-heading-sm); font-weight: var(--weight-semibold); color: var(--color-ink); margin-top: auto; }
.product-card__footer { padding: var(--space-2); padding-top: 0; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: var(--radius-pill); font-size: 11px; font-weight: var(--weight-semibold); text-transform: uppercase; letter-spacing: 0.03em; }
.badge--brand { background: var(--color-fog); color: var(--color-slate); }
.badge--novo { background: var(--color-action-tint); color: var(--color-action-hover); }
.badge--usado { background: var(--color-mist); color: var(--color-slate); }

/* Página de produto */
.product-detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 420px); gap: var(--space-5); align-items: start; }
.product-detail__media {
  aspect-ratio: 1 / 1; background: var(--color-fog); border: 1px solid var(--color-line); border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center; color: var(--color-ash); text-align: center; padding: var(--space-4);
}
.spec-table { width: 100%; border-collapse: collapse; margin-top: var(--space-2); }
.spec-table th, .spec-table td { text-align: left; padding: 10px 0; border-bottom: 1px solid var(--color-line); font-size: var(--text-body); }
.spec-table th { color: var(--color-ash); font-weight: var(--weight-regular); width: 40%; }
.spec-table td { color: var(--color-ink); }

.qty-input { display: inline-flex; align-items: center; border: 1px solid var(--color-mist); border-radius: var(--radius-pill); overflow: hidden; }
.qty-input button { width: 40px; height: 40px; font-size: 1.1rem; }
.qty-input button:hover { background: var(--color-fog); }
.qty-input input { width: 48px; text-align: center; border: none; background: none; font-family: var(--font-mono); }

/* Carrinho */
.cart-line { display: grid; grid-template-columns: 72px 1fr auto; gap: var(--space-2); align-items: center; padding-block: var(--space-2); border-bottom: 1px solid var(--color-line); }
.cart-line__media { width: 72px; height: 72px; border-radius: var(--radius-md); background: var(--color-fog); display: flex; align-items: center; justify-content: center; color: var(--color-ash); font-size: 11px; text-align: center; }
.cart-line__remove { font-size: var(--text-caption); color: var(--color-error); text-decoration: underline; }
.cart-summary { background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius-md); padding: var(--space-3); position: sticky; top: 96px; }
.cart-summary__row { display: flex; justify-content: space-between; padding-block: 6px; font-size: var(--text-body); }
.cart-summary__row--total { font-weight: var(--weight-semibold); font-size: var(--text-heading-sm); border-top: 1px solid var(--color-line); margin-top: var(--space-1); padding-top: var(--space-2); }
.cart-empty { text-align: center; padding: var(--space-6) var(--space-3); color: var(--color-ash); }

/* Serviço / info list */
.info-list { display: flex; flex-direction: column; gap: var(--space-3); }
.info-list__item { display: flex; gap: var(--space-2); }
.info-list__icon, .service-item__icon {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: var(--radius-md);
  background: var(--color-action-tint); color: var(--color-action-hover);
  display: flex; align-items: center; justify-content: center;
}
.service-item { display: flex; gap: var(--space-2); padding-block: var(--space-2); border-bottom: 1px solid var(--color-line); }
.service-item:last-child { border-bottom: none; }

.card { background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--radius-md); padding: var(--space-3); }
.card--featured { background: var(--color-ink); color: #fff; border: none; }
.card--featured .heading-lg, .card--featured .body-lg, .card--featured .body { color: #fff; }
.card--featured .btn-outline { border-color: rgba(255,255,255,0.4); color: #fff; }
.card--featured .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

.media-placeholder {
  border-radius: var(--radius-md); border: 1px dashed var(--color-mist); background: var(--color-canvas-alt);
  color: var(--color-ash); display: flex; align-items: center; justify-content: center; text-align: center;
  padding: var(--space-4); min-height: 260px; font-size: var(--text-caption);
}

/* Toast (feedback de "adicionado ao carrinho") */
.toast {
  position: fixed; bottom: var(--space-3); left: 50%; transform: translate(-50%, 16px);
  background: var(--color-ink); color: #fff; padding: 12px 24px; border-radius: var(--radius-pill);
  font-size: var(--text-caption); box-shadow: var(--shadow-cart); z-index: 70;
  opacity: 0; pointer-events: none; transition: opacity var(--duration) ease, transform var(--duration) ease;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

/* Footer */
.footer { background: var(--color-ink); color: var(--color-canvas); padding-block: var(--space-6) var(--space-4); }
.footer a { text-decoration: none; color: var(--color-canvas); opacity: 0.85; }
.footer a:hover { opacity: 1; text-decoration: underline; }
.footer__grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); padding-bottom: var(--space-4); border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-2); padding-top: var(--space-3); font-size: var(--text-caption); opacity: 0.7; }
.footer__heading { font-size: var(--text-caption); text-transform: uppercase; letter-spacing: var(--tracking-wide); opacity: 0.6; margin-bottom: var(--space-2); }
.footer__links { display: flex; flex-direction: column; gap: var(--space-1); }

.whatsapp-fab {
  position: fixed; right: var(--space-3); bottom: var(--space-3); z-index: 60;
  width: 56px; height: 56px; border-radius: 50%; background: var(--color-action); color: #fff;
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-cart);
  transition: background-color var(--duration) ease;
}
.whatsapp-fab:hover { background: var(--color-action-hover); }

/* ---------- 6. RESPONSIVE ---------- */
@media (max-width: 900px) {
  .product-detail { grid-template-columns: 1fr; }
  .cart-summary { position: static; }
}

@media (max-width: 860px) {
  .nav__links {
    position: fixed; inset: 64px var(--space-3) auto var(--space-3);
    flex-direction: column; background: var(--color-surface);
    border: 1px solid var(--color-line); border-radius: var(--radius-md); padding: var(--space-2);
    gap: 0; box-shadow: var(--shadow-cart); transform-origin: top; transform: scaleY(0); opacity: 0;
    pointer-events: none; transition: transform var(--duration) ease, opacity var(--duration) ease;
  }
  .nav__links a { padding: var(--space-2); width: 100%; border-bottom: 1px solid var(--color-line); }
  .nav__links a:last-child { border-bottom: none; }
  .nav.is-open .nav__links { transform: scaleY(1); opacity: 1; pointer-events: auto; }
  .nav__cta-text { display: none; }
  .nav__toggle { display: flex; }
  .filters__result { margin-left: 0; }
}

/* ---------- Fotos (imagens genéricas CC0 em images/, ilustrativas) ---------- */
.media-figure {
  margin: 0; border-radius: var(--radius-md); overflow: hidden;
  background: var(--color-fog); aspect-ratio: 4 / 3;
}
.media-figure img { display: block; width: 100%; height: 100%; object-fit: cover; }
.media-figure--wide { aspect-ratio: 3 / 2; }

.card--photo { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.card--photo .card__photo { display: block; width: 100%; height: auto; flex: none; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 500ms ease; }
.card--photo .card__text { padding: var(--space-2) var(--space-3) var(--space-3); }
@media (hover: hover) { .card--photo:hover .card__photo { transform: scale(1.04); } }

.product-card__media--photo { padding: 0; overflow: hidden; }
.product-card__media--photo img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 500ms ease; }
@media (hover: hover) { .product-card:hover .product-card__media--photo img { transform: scale(1.04); } }

.product-detail__media--photo { margin: 0; padding: 0; overflow: hidden; flex-direction: column; position: relative; }
.product-detail__media--photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.product-detail__media--photo figcaption {
  position: absolute; left: 12px; bottom: 12px; padding: 4px 10px; border-radius: var(--radius-pill);
  background: rgba(20, 24, 27, 0.72); color: #fff;
}

.cart-line__media { overflow: hidden; }
.cart-line__media img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ---------- Animação de entrada (js/reveal.js) ---------- */
/* transition-duration com !important: vence o bloco global de
   prefers-reduced-motion acima (seletor mais específico que o *), porque a
   animação de entrada roda mesmo com "reduzir movimento" (decisão do cliente). */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(40px);
  transition-property: opacity, transform;
  transition-duration: 800ms !important;
  transition-timing-function: cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
}
.js-reveal [data-reveal].is-visible { opacity: 1; transform: none; }