/* ==========================================================================
   Main Layout — Marmoraria Rei da Vila
   Mobile-first. Breakpoints: 809px, 1199px, 1439px
   ========================================================================== */

/* ---------- Base ---------- */
body {
  font-family: var(--font-base);
  font-size: 18px;
  font-weight: 400;
  letter-spacing: -0.1px;
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-bg-light);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: var(--space-7);
}

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.section--soft {
  background-color: var(--color-bg-soft);
}

.section__header {
  max-width: 720px;
  margin-bottom: var(--space-6);
}

.section__header--center {
  margin-inline: auto;
  text-align: center;
}

/* ---------- Tipografia ---------- */
h1,
h2,
h3 {
  font-weight: 500;
}

.h1 {
  font-size: clamp(44px, 5vw, 58px);
  letter-spacing: -1px;
  line-height: 1.2;
}

.h2 {
  font-size: clamp(36px, 4vw, 50px);
  letter-spacing: -0.8px;
  line-height: 1.1;
}

.h3 {
  font-size: clamp(24px, 3vw, 38px);
  letter-spacing: -0.4px;
  line-height: 1.15;
}

.lead {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

.section--dark .lead {
  color: rgba(255, 255, 255, 0.72);
}

.text-accent {
  color: var(--color-accent);
}

/* ---------- Header / Nav ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  transition: background-color var(--duration-base) var(--ease-premium),
    box-shadow var(--duration-base) var(--ease-premium),
    padding var(--duration-base) var(--ease-premium);
  padding-block: var(--space-3);
}

.header.is-scrolled {
  background-color: rgba(16, 16, 20, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding-block: var(--space-2);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.header__logo img {
  height: 40px;
  width: auto;
}

.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav__link {
  color: var(--color-text-inverse);
  font-size: 16px;
  font-weight: 500;
  position: relative;
  transition: color var(--duration-fast) var(--ease-premium);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--duration-base) var(--ease-premium);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-accent);
}

.nav__link.is-active::after,
.nav__link:hover::after {
  width: 100%;
}

.header__cta {
  display: none;
}

/* Hamburger */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-inverse);
  transition: transform var(--duration-base) var(--ease-premium),
    opacity var(--duration-base) var(--ease-premium);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-bg-dark);
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--container-padding);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-premium);
  visibility: hidden;
}

.mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-menu__close {
  position: absolute;
  top: var(--space-3);
  right: var(--container-padding);
  width: 44px;
  height: 44px;
  color: var(--color-text-inverse);
  font-size: 32px;
  line-height: 1;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.mobile-menu__link {
  color: var(--color-text-inverse);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.4px;
}

.mobile-menu__link:hover {
  color: var(--color-accent);
}

.mobile-menu__cta {
  margin-top: var(--space-5);
}

/* ---------- Hero ---------- */
.hero {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding-top: 140px;
  padding-bottom: var(--space-7);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  gap: var(--space-6);
}

.hero__title {
  margin-bottom: var(--space-3);
}

.hero__subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 52ch;
  margin-bottom: var(--space-5);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow-lg);
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Sobre ---------- */
.about__grid {
  display: grid;
  gap: var(--space-5);
}

.features-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.about__gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.about__gallery img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ---------- Estatísticas ---------- */
.stats {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5) var(--space-3);
}

.stat {
  text-align: center;
}

.stat__value {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 300;
  letter-spacing: -0.8px;
  line-height: 1;
  color: var(--color-accent);
}

.stat__label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--space-1);
}

/* ---------- Materiais ---------- */
.materials-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ---------- Portfólio ---------- */
.portfolio-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ---------- Depoimentos ---------- */
.testimonials-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ---------- Accordion wrapper ---------- */
.accordion {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-5);
}

/* ---------- Contato ---------- */
.contact__grid {
  display: grid;
  gap: var(--space-6);
}

.contact-info__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.contact-info__item {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
}

.contact-info__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background-color: rgba(201, 169, 97, 0.15);
  color: var(--color-accent);
}

.contact-info__icon svg {
  width: 20px;
  height: 20px;
}

.contact-info__label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.contact-info__value {
  font-size: 17px;
  color: var(--color-text-inverse);
}

.contact-info__value a:hover {
  color: var(--color-accent);
}

.contact__form-wrap {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

/* ---------- Footer ---------- */
.footer {
  background-color: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.72);
  padding-block: var(--space-6) var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__grid {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.footer__logo img {
  height: 44px;
  width: auto;
  margin-bottom: var(--space-2);
}

.footer__desc {
  font-size: 15px;
  max-width: 40ch;
}

.footer__title {
  color: var(--color-text-inverse);
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: var(--space-2);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer__list a:hover,
.footer__list li:hover {
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-3);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

/* ---------- Utilidades de animação ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-premium),
    transform var(--duration-slow) var(--ease-premium);
  will-change: opacity, transform;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: var(--z-overlay);
  background: var(--color-accent);
  color: var(--color-bg-dark);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: var(--container-padding);
  top: var(--space-2);
}

/* Foco por teclado visível */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Breakpoint: Tablet (810px+)
   ========================================================================== */
@media (min-width: 810px) {
  .section {
    padding-block: 110px;
  }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .materials-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about__gallery {
    grid-template-columns: repeat(4, 1fr);
  }

  .hero__actions {
    flex-wrap: nowrap;
  }
}

/* ==========================================================================
   Breakpoint: Desktop intermediário (1200px+)
   ========================================================================== */
@media (min-width: 1200px) {
  .section {
    padding-block: var(--space-section);
  }

  .nav {
    display: block;
  }

  .header__cta {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }

  .hero {
    padding-top: 180px;
  }

  .hero__grid {
    grid-template-columns: 1.1fr 1fr;
    align-items: center;
  }

  .about__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: var(--space-7);
  }

  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact__grid {
    grid-template-columns: 1fr 1.1fr;
    align-items: start;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
  }
}

/* ==========================================================================
   Breakpoint: Desktop amplo (1440px+)
   ========================================================================== */
@media (min-width: 1440px) {
  :root {
    --container-padding: 40px;
  }

  .hero__grid {
    gap: var(--space-7);
  }
}