/* ============================================================
   Bietto Interni Design — tokens
   ============================================================ */
:root {
  --ink: #17140f;
  --ink-soft: #241f17;
  --paper: #f2ece0;
  --paper-soft: #e9e1d0;
  --copper: #009591;
  --copper-dim: #007a77;
  --walnut: #5c4430;
  --stone: #c9c0ac;
  --white: #ffffff;

  --font-display: "Marcellus", serif;
  --font-caps: "Marcellus SC", serif;
  --font-body: "Jost", sans-serif;

  --container: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 2px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.eyebrow {
  font-family: var(--font-caps);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper-dim);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin: 0 0 0.9rem;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--copper-dim);
  display: inline-block;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 400;
  margin: 0;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.6rem);
}

h2 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0;
}

.lede {
  color: var(--walnut);
  max-width: 46ch;
}

/* grain-line: signature divider, evokes a cabinetmaker's joinery reveal */
.grain-line {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--copper-dim);
  margin: 0 auto;
  width: fit-content;
}
.grain-line::before,
.grain-line::after {
  content: "";
  width: 48px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}
.grain-line span {
  width: 6px;
  height: 6px;
  border: 1px solid currentColor;
  transform: rotate(45deg);
  display: inline-block;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1rem 1.9rem;
  font-family: var(--font-caps);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease);
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: var(--copper);
  color: var(--ink);
}
.btn-primary:hover {
  background: var(--white);
}
.btn-ghost {
  background: transparent;
  color: var(--copper);
  border-color: var(--copper);
}
.btn-ghost:hover {
  border-color: var(--copper);
  background: rgba(0, 149, 145, 0.12);
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  transition: background 0.4s var(--ease), padding 0.4s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(23, 20, 15, 0.92);
  backdrop-filter: blur(6px);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}
.site-header .logo {
  width: 118px;
}
.site-header .logo img {
  width: 100%;
  display: block;
}
.header-cta {
  padding: 0.7rem 1.3rem;
  font-size: 0.72rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.menu-toggle {
  width: 30px;
  height: 30px;
  padding: 0;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--white);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.menu-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   Nav overlay (hamburger menu)
   ============================================================ */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(0.6rem, 2vw, 1rem);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease);
}
.nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}
.nav-overlay .nav-link {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.5rem);
  color: var(--paper);
  padding: 0.4rem 0;
  transition: color 0.3s var(--ease);
}
.nav-overlay .nav-link:hover {
  color: var(--copper);
}
.nav-close {
  position: absolute;
  top: 1.3rem;
  right: 1.4rem;
  background: none;
  border: none;
  color: var(--paper);
  font-size: 2.2rem;
  line-height: 1;
  padding: 0.4rem;
}
.nav-close:hover {
  color: var(--copper);
}

/* ============================================================
   Hero — everything above the fold on mobile
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  color: var(--white);
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(17, 14, 10, 0.94) 0%,
    rgba(17, 14, 10, 0.72) 32%,
    rgba(17, 14, 10, 0.38) 62%,
    rgba(17, 14, 10, 0.35) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 6.5rem var(--gutter) 2.4rem;
}
.hero .eyebrow {
  color: var(--copper);
}
.hero .eyebrow::before {
  background: var(--copper);
}
.hero h1 {
  color: var(--white);
  max-width: 15ch;
}
.hero .lede {
  color: var(--stone);
  margin-top: 1rem;
  font-size: 1.02rem;
}
.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}
.hero-proof {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  gap: 0.5rem 1.4rem;
  font-family: var(--font-caps);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--stone);
  text-align: center;
}
.hero-proof strong {
  color: var(--copper);
  font-family: var(--font-display);
  font-size: 1rem;
  margin-right: 0.4em;
}

@media (max-width: 480px) {
  .hero-content {
    padding-top: 5.6rem;
  }
  .hero .lede {
    font-size: 0.95rem;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-proof {
    font-size: 0.68rem;
    gap: 0.4rem 1rem;
  }
}

/* ============================================================
   Section rhythm
   ============================================================ */
section {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}
.section-head .lede {
  margin: 1rem auto 0;
}

/* ============================================================
   Services
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--stone);
  border: 1px solid var(--stone);
}
.service-card {
  background: var(--paper);
  padding: 2.2rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.service-card .index {
  font-family: var(--font-caps);
  color: var(--copper-dim);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}
.service-card h3 {
  color: var(--ink);
}
.service-card .tagline {
  font-family: var(--font-caps);
  font-size: 0.92rem;
  color: var(--walnut);
}
.service-card p {
  color: var(--walnut);
  font-size: 0.95rem;
}
@media (max-width: 720px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Process (real sequence: Pré-Projeto > Execução > Pós-Entrega)
   ============================================================ */
.process {
  background: var(--paper-soft);
}
.team-photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
  max-width: 480px;
  margin: 0 auto clamp(2.6rem, 6vw, 3.6rem);
}
.team-photos img {
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}
.process-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem;
  counter-reset: step;
}
.process-step {
  position: relative;
  padding-top: 1.6rem;
  border-top: 1px solid var(--stone);
}
.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: -0.05rem;
  left: 0;
  transform: translateY(-100%);
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--copper-dim);
  background: var(--paper-soft);
  padding-bottom: 0.4rem;
}
.process-step h3 {
  margin-bottom: 0.6rem;
}
.process-step p {
  color: var(--walnut);
  font-size: 0.95rem;
}
.process-founder {
  margin-top: 2.6rem;
  text-align: center;
  font-size: 0.92rem;
  color: var(--walnut);
}
@media (max-width: 720px) {
  .process-track {
    grid-template-columns: 1fr;
    gap: 2.4rem;
  }
}

/* ============================================================
   Projects gallery
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}
.project-card {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--ink);
  padding: 0;
  border: none;
  display: block;
  width: 100%;
}
.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.project-card:hover img {
  transform: scale(1.06);
}
.project-card .caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1rem 0.9rem;
  background: linear-gradient(to top, rgba(17, 14, 10, 0.9), transparent);
  color: var(--white);
  text-align: left;
}
.project-card .caption .category {
  display: block;
  font-family: var(--font-caps);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.project-card .caption .name {
  font-family: var(--font-display);
  font-size: 0.95rem;
}
@media (max-width: 720px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   Offer / final CTA
   ============================================================ */
.offer {
  text-align: center;
}
.offer-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  max-width: 720px;
  margin: 2rem auto 2.6rem;
}
.offer-tags span {
  font-family: var(--font-caps);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.55rem 1rem;
  border: 1px solid var(--walnut);
  color: var(--walnut);
}
.offer-badge {
  margin-top: 1.4rem;
  font-family: var(--font-caps);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--copper-dim);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: var(--stone);
  padding: 3.5rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 2.4rem;
  padding-bottom: 2.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}
.footer-grid .logo {
  width: 130px;
  margin-bottom: 1rem;
}
.footer-grid p {
  font-size: 0.9rem;
  max-width: 32ch;
}
.footer-col h4 {
  font-family: var(--font-caps);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 0.9rem;
}
.footer-col a,
.footer-col p {
  display: block;
  font-size: 0.92rem;
  color: var(--stone);
  margin-bottom: 0.5rem;
}
.footer-col a:hover {
  color: var(--white);
}
.footer-bottom {
  padding-top: 1.6rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.78rem;
  color: rgba(201, 192, 172, 0.7);
}
@media (max-width: 780px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ============================================================
   Lead modal
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(17, 14, 10, 0.72);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease);
}
.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--paper);
  color: var(--ink);
  width: 100%;
  max-width: 420px;
  padding: 2.4rem 2rem;
  position: relative;
  transform: translateY(12px);
  transition: transform 0.35s var(--ease);
}
.modal-overlay.is-open .modal {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--walnut);
  padding: 0.4rem;
}
.modal h3 {
  margin-bottom: 0.5rem;
}
.modal .lede {
  font-size: 0.92rem;
  margin-bottom: 1.6rem;
}
.modal form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.modal input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--stone);
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius);
}
.modal input:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--copper-dim);
  outline-offset: 2px;
}
.modal input.is-invalid {
  border-color: #b5493a;
}
.field-error {
  color: #b5493a;
  font-size: 0.78rem;
  margin-top: -0.5rem;
  min-height: 1em;
}
.modal .btn {
  margin-top: 0.4rem;
  width: 100%;
}
.form-note {
  font-size: 0.76rem;
  color: var(--walnut);
  margin-top: 1rem;
  text-align: center;
}

/* ============================================================
   Floating WhatsApp button
   ============================================================ */
.whatsapp-float {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 60;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: none;
  background: #25d366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(17, 14, 10, 0.35);
  transition: transform 0.3s var(--ease);
}
.whatsapp-float:hover {
  transform: scale(1.07);
}
.whatsapp-float svg {
  width: 30px;
  height: 30px;
}
@media (max-width: 480px) {
  .whatsapp-float {
    right: 1rem;
    bottom: 1rem;
    width: 52px;
    height: 52px;
  }
  .whatsapp-float svg {
    width: 27px;
    height: 27px;
  }
}

/* ============================================================
   Project detail page
   ============================================================ */
.project-hero {
  padding: 8.5rem 0 3rem;
  background: var(--ink);
  color: var(--paper);
  text-align: center;
}
.project-hero .back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-caps);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 1.6rem;
}
.project-hero .back-link:hover {
  color: var(--white);
}
.project-hero .category-tag {
  font-family: var(--font-caps);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone);
  display: block;
  margin-bottom: 0.6rem;
}
.project-hero h1 {
  color: var(--white);
}
.project-hero .project-location {
  font-family: var(--font-caps);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--stone);
  margin-top: 0.9rem;
}
.project-hero .project-tagline {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  color: var(--copper);
  max-width: 46ch;
  margin: 0.8rem auto 0;
}

.detail-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  padding-top: clamp(2.5rem, 6vw, 4rem);
}
.detail-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.detail-gallery.single-photo {
  grid-template-columns: 1fr;
}
.detail-gallery.single-photo img {
  aspect-ratio: 16 / 10;
}
.detail-gallery .span-2 {
  grid-column: span 2;
}
@media (max-width: 980px) {
  .detail-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 720px) {
  .detail-gallery {
    grid-template-columns: 1fr;
  }
  .detail-gallery img {
    aspect-ratio: 4 / 3;
  }
  .detail-gallery .span-2 {
    grid-column: span 1;
  }
}

.detail-description {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  padding: clamp(3rem, 7vw, 5rem) 0 1rem;
}
.detail-description p {
  color: var(--walnut);
  font-size: 1.02rem;
  line-height: 1.7;
}
.detail-description p + p {
  margin-top: 1rem;
}

.project-meta {
  max-width: 680px;
  margin: 2.4rem auto 0;
  border-top: 1px solid var(--stone);
  padding-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  text-align: center;
}
.project-meta .label {
  display: block;
  font-family: var(--font-caps);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper-dim);
  margin-bottom: 0.35rem;
}
.project-meta .value {
  display: block;
  font-size: 0.92rem;
  color: var(--walnut);
}
@media (max-width: 640px) {
  .project-meta {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
}

.detail-cta {
  text-align: center;
  padding: clamp(3rem, 6vw, 4.5rem) 0 clamp(4rem, 8vw, 6rem);
}
.detail-cta p {
  color: var(--walnut);
  margin-bottom: 1.6rem;
}