/* Arte Interiores — design system */
:root {
  --ink: #141311;
  --ink-soft: #2c2a26;
  --stone: #e8e4dc;
  --stone-deep: #d4cfc4;
  --paper: #f3f0ea;
  --mist: #faf8f4;
  --oak: #9a6b3c;
  --oak-deep: #7a5230;
  --line: rgba(20, 19, 17, 0.12);
  --line-strong: rgba(20, 19, 17, 0.22);
  --white: #ffffff;
  --shadow-soft: 0 24px 60px rgba(20, 19, 17, 0.08);

  --font-display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Outfit", "Segoe UI", sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;

  --header-h: 4.5rem;
  --max: 72rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 0.7s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--mist);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--oak-deep);
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, p {
  margin: 0;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  transition: background var(--duration) var(--ease),
    backdrop-filter var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
}

.site-header__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover {
  color: var(--ink);
}

.brand__logo {
  height: clamp(2.4rem, 5vw, 3rem);
  width: auto;
  max-width: min(52vw, 14rem);
  object-fit: contain;
  transition: filter 0.35s var(--ease);
}

.brand__sub-mobile {
  display: none;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 1.15rem;
  height: 1px;
  background: var(--ink);
  position: relative;
  transition: transform 0.35s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink-soft);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav__cta {
  padding: 0.65rem 1.15rem;
  border: 1px solid var(--ink);
  color: var(--ink) !important;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}

.site-nav__cta:hover {
  background: var(--ink);
  color: var(--white) !important;
}

/* Hero — full bleed, one composition */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  color: var(--white);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__media-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  transform: scale(1.02);
  animation: hero-ken 20s var(--ease) forwards;
}

.hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(20, 19, 17, 0.58) 0%, rgba(20, 19, 17, 0.22) 42%, rgba(20, 19, 17, 0.12) 100%),
    linear-gradient(180deg, rgba(20, 19, 17, 0.12) 0%, rgba(20, 19, 17, 0.42) 100%);
}

.hero__grain {
  display: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--header-h) + 2rem) clamp(1.25rem, 4vw, 2.5rem) clamp(3rem, 8vh, 5rem);
}

.hero__brand {
  margin: 0;
  opacity: 0;
  transform: translateY(1.5rem);
  animation: rise 1s var(--ease) 0.15s forwards;
}

.hero__logo {
  width: min(92vw, 34rem);
  height: auto;
  filter: brightness(0) invert(1);
}

.hero__headline {
  margin-top: 1.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.25;
  max-width: 22ch;
  opacity: 0;
  transform: translateY(1.5rem);
  animation: rise 1s var(--ease) 0.35s forwards;
}

.hero__lead {
  margin-top: 1.15rem;
  max-width: 36ch;
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.82);
  opacity: 0;
  transform: translateY(1.5rem);
  animation: rise 1s var(--ease) 0.5s forwards;
}

.hero__actions {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  opacity: 0;
  transform: translateY(1.5rem);
  animation: rise 1s var(--ease) 0.65s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease);
}

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

.btn--primary:hover {
  background: var(--stone);
  color: var(--ink);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.45);
}

.btn--ghost:hover {
  border-color: var(--white);
  color: var(--white);
}

.btn--dark {
  background: var(--ink);
  color: var(--white);
}

.btn--dark:hover {
  background: var(--ink-soft);
  color: var(--white);
}

.btn--outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.btn--outline:hover {
  background: var(--ink);
  color: var(--white);
}

/* Sections */
.section {
  padding: var(--space-2xl) clamp(1.25rem, 4vw, 2.5rem);
}

.section__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section__eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--oak-deep);
  margin-bottom: 1rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.section__text {
  margin-top: 1.25rem;
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.section--stone {
  background: var(--stone);
}

.section--ink {
  background: var(--ink);
  color: var(--white);
}

.section--ink .section__text {
  color: rgba(255, 255, 255, 0.72);
}

.section--ink .section__eyebrow {
  color: #c9a06a;
}

/* Processo — linear, sem cards */
.processo {
  display: grid;
  gap: 0;
  margin-top: var(--space-xl);
  border-top: 1px solid var(--line-strong);
}

.processo__item {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line-strong);
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.processo__item.is-visible {
  opacity: 1;
  transform: none;
}

.processo__num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  line-height: 1;
  color: var(--oak);
}

.processo__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 500;
  line-height: 1.15;
}

.processo__text {
  margin-top: 0.65rem;
  max-width: 48ch;
  color: var(--ink-soft);
}

@media (min-width: 800px) {
  .processo {
    grid-template-columns: repeat(4, 1fr);
    border-top: none;
    gap: 0;
  }

  .processo__item {
    grid-template-columns: 1fr;
    padding: 0 1.5rem 0 0;
    border-bottom: none;
    border-right: 1px solid var(--line-strong);
  }

  .processo__item:last-child {
    border-right: none;
    padding-right: 0;
  }

  .processo__item:first-child {
    padding-left: 0;
  }
}

/* Ambientes — lista tipográfica + faixa visual */
.ambientes {
  margin-top: var(--space-xl);
  display: grid;
  gap: 0;
}

.ambiente {
  display: grid;
  gap: 1rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.ambiente.is-visible {
  opacity: 1;
  transform: none;
}

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

.ambiente__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 500;
}

.ambiente__text {
  color: var(--ink-soft);
  max-width: 40ch;
}

@media (min-width: 720px) {
  .ambiente {
    grid-template-columns: minmax(12rem, 0.4fr) 1fr;
    align-items: baseline;
    gap: 2rem;
  }
}

.ambientes-band {
  display: none;
}

/* Portfolio */
.portfolio {
  margin-top: var(--space-xl);
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.portfolio__item {
  margin: 0;
  position: relative;
  overflow: hidden;
  background: transparent;
}

.portfolio__item img {
  width: 100%;
  height: clamp(16rem, 58vw, 28rem);
  object-fit: cover;
  display: block;
  transition: transform 1.1s var(--ease);
}

.portfolio__item:hover img {
  transform: scale(1.03);
}

.portfolio__caption {
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--ink-soft);
}

@media (min-width: 720px) {
  .portfolio {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .portfolio__item:first-child {
    grid-column: span 2;
  }

  .portfolio__item:first-child img {
    height: clamp(22rem, 48vw, 32rem);
  }

  .portfolio__item:nth-child(n+2) img {
    height: clamp(16rem, 32vw, 22rem);
  }
}

@media (min-width: 1100px) {
  .portfolio {
    grid-template-columns: 1.2fr 0.9fr 0.9fr;
    grid-template-rows: auto auto;
  }

  .portfolio__item:first-child {
    grid-column: 1;
    grid-row: span 2;
  }

  .portfolio__item:first-child img {
    height: 100%;
    min-height: 34rem;
  }

  .portfolio__item:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
  }

  .portfolio__item:nth-child(3) {
    grid-column: 3;
    grid-row: 1;
  }

  .portfolio__item:nth-child(4) {
    grid-column: 2 / span 2;
    grid-row: 2;
  }

  .portfolio__item:nth-child(4) img {
    height: clamp(14rem, 22vw, 18rem);
  }
}

/* Região / SEO local */
.regiao-intro {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .regiao-intro {
    grid-template-columns: 1fr 1fr;
    align-items: end;
    gap: 4rem;
  }

  .regiao-intro .section__text {
    margin-top: 0;
  }
}

.cidades {
  margin-top: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.25rem;
  max-width: 56rem;
}

.cidades li {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.78);
  position: relative;
}

.cidades li::after {
  content: "·";
  margin-left: 1.25rem;
  color: rgba(255, 255, 255, 0.35);
  position: absolute;
  right: -0.85rem;
}

.cidades li:last-child::after {
  content: none;
}

.cidades strong {
  color: var(--white);
  font-weight: 500;
}

/* CTA final */
.cta-block {
  display: grid;
  gap: 2rem;
}

@media (min-width: 800px) {
  .cta-block {
    grid-template-columns: 1.4fr 1fr;
    align-items: center;
    gap: 3rem;
  }
}

.cta-block__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Page header (internas) */
.page-hero {
  padding: calc(var(--header-h) + 3.5rem) clamp(1.25rem, 4vw, 2.5rem) var(--space-lg);
  background:
    linear-gradient(180deg, var(--stone) 0%, var(--mist) 100%);
}

.page-hero__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 5rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.02em;
  max-width: 12ch;
}

.page-hero__lead {
  margin-top: 1.25rem;
  max-width: 40ch;
  color: var(--ink-soft);
}

/* Formulário orçamento */
.form-wrap {
  max-width: 40rem;
}

.form {
  display: grid;
  gap: 1.25rem;
}

.form__row {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .form__row--2 {
    grid-template-columns: 1fr 1fr;
  }
}

.field label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
  color: var(--ink-soft);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-strong);
  background: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  transition: border-color 0.25s var(--ease);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--oak);
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

.form__note {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* WhatsApp FAB */
.whatsapp-fab {
  position: fixed;
  right: clamp(1rem, 3vw, 1.5rem);
  bottom: clamp(1rem, 3vw, 1.5rem);
  z-index: 90;
  width: 3.5rem;
  height: 3.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #1f6b45;
  color: var(--white);
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(20, 19, 17, 0.22);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease);
}

.whatsapp-fab:hover {
  background: #185536;
  color: var(--white);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-fab {
    transition: none;
  }
}

.alert {
  padding: 1rem 1.15rem;
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--oak);
  background: var(--stone);
}

.alert--error {
  border-left-color: #8b3a2a;
  background: #f3e8e4;
}

/* Sobre */
.prose {
  max-width: 42rem;
  display: grid;
  gap: 1.25rem;
  color: var(--ink-soft);
}

.prose strong {
  color: var(--ink);
  font-weight: 500;
}

/* Footer */
.site-footer {
  background: #0f0e0c;
  color: rgba(255, 255, 255, 0.72);
  padding: var(--space-xl) clamp(1.25rem, 4vw, 2.5rem) var(--space-lg);
}

.site-footer a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer a:hover {
  color: var(--white);
}

.site-footer__grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 800px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 3rem;
  }
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--white);
  font-weight: 500;
}

.site-footer__tag {
  margin-top: 0.85rem;
  max-width: 32ch;
  font-size: 0.95rem;
}

.site-footer__label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 1rem;
}

.site-footer__col ul {
  display: grid;
  gap: 0.55rem;
}

.site-footer__bottom {
  max-width: var(--max);
  margin: var(--space-lg) auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
}

/* Reveal utility */
[data-reveal] {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes hero-ken {
  to {
    transform: scale(1);
  }
}

/* Mobile nav */
@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    background: rgba(250, 248, 244, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    padding: 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.45s var(--ease), opacity 0.45s var(--ease);
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.15rem;
  }

  .site-nav__cta {
    width: 100%;
    text-align: center;
  }

  body.nav-open {
    overflow: hidden;
  }

  .site-header {
    background: rgba(250, 248, 244, 0.94);
  }

  .hero .site-header,
  body:has(.hero) .site-header:not(.is-scrolled) {
    background: transparent;
  }

  body:has(.hero) .site-header:not(.is-scrolled) .brand__logo {
    filter: brightness(0) invert(1);
  }

  body:has(.hero) .site-header:not(.is-scrolled) .nav-toggle {
    border-color: rgba(255, 255, 255, 0.4);
  }

  body:has(.hero) .site-header:not(.is-scrolled) .nav-toggle__bars,
  body:has(.hero) .site-header:not(.is-scrolled) .nav-toggle__bars::before,
  body:has(.hero) .site-header:not(.is-scrolled) .nav-toggle__bars::after {
    background: var(--white);
  }
}

@media (min-width: 861px) {
  body:has(.hero) .site-header:not(.is-scrolled) {
    background: transparent;
  }

  body:has(.hero) .site-header:not(.is-scrolled) .brand__logo {
    filter: brightness(0) invert(1);
  }

  body:has(.hero) .site-header:not(.is-scrolled) .site-nav a {
    color: rgba(255, 255, 255, 0.85);
  }

  body:has(.hero) .site-header:not(.is-scrolled) .site-nav a:hover {
    color: var(--white);
  }

  body:has(.hero) .site-header:not(.is-scrolled) .site-nav__cta {
    border-color: rgba(255, 255, 255, 0.7);
    color: var(--white) !important;
  }

  body:has(.hero) .site-header:not(.is-scrolled) .site-nav__cta:hover {
    background: var(--white);
    color: var(--ink) !important;
  }
}

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

  .hero__media-bg {
    transform: none;
  }

  [data-reveal],
  .processo__item,
  .ambiente {
    opacity: 1;
    transform: none;
  }
}