/* ============================================================
   FORMA STUDIO — versão reformulada
   Minimalismo suíço: muito branco, hairlines, tipografia grande.
   Tokens + dark mode + componentes. Sem estilos inline.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,400;9..144,500&display=swap');

:root {
  --bg: #f4f3f0;
  --surface: #ffffff;
  --ink: #16150f;
  --ink-soft: #6a685e;
  --line: rgba(22, 21, 15, 0.16);
  --accent: #1a1a1a;
  --maxw: 1280px;
  --transition: 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-serif: 'Fraunces', Georgia, serif;
}
[data-theme='dark'] {
  --bg: #100f0c;
  --surface: #16150f;
  --ink: #f1efe8;
  --ink-soft: #a3a094;
  --line: rgba(241, 239, 232, 0.16);
  --accent: #f1efe8;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition:
    background var(--transition),
    color var(--transition);
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.section {
  padding: 120px 0;
}
.line {
  height: 1px;
  background: var(--line);
  width: 100%;
}
.label {
  font-size: 11px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
}
.display {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.01em;
}
.h-xl {
  font-size: clamp(2.8rem, 8vw, 7rem);
}
.h-lg {
  font-size: clamp(2.2rem, 5vw, 4rem);
}
.lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 560px;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: var(--transition);
}
header.scrolled {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1.8rem;
}
.nav-links {
  display: flex;
  gap: 40px;
}
.nav-links a {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  position: relative;
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--ink);
}
.controls {
  display: flex;
  align-items: center;
  gap: 20px;
}
.theme-toggle {
  background: none;
  border: 1px solid var(--line);
  color: var(--ink);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
}
.icon-sun {
  display: none;
}
[data-theme='dark'] .icon-moon {
  display: none;
}
[data-theme='dark'] .icon-sun {
  display: inline;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.hamburger span {
  width: 24px;
  height: 1.5px;
  background: var(--ink);
}
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  transform: translateX(100%);
  transition: transform var(--transition);
}
.mobile-menu.active {
  transform: translateX(0);
}
.mobile-menu a {
  font-family: var(--font-serif);
  font-size: 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 30px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
}
.btn:hover {
  background: var(--ink);
  color: var(--bg);
}
.btn-solid {
  background: var(--ink);
  color: var(--bg);
}
.btn-solid:hover {
  opacity: 0.85;
}

/* Hero carousel */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
}
.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.slide.active {
  opacity: 1;
}
.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.slide .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 8, 0.55), transparent 50%);
}
.slide .info {
  position: absolute;
  left: 0;
  bottom: 60px;
  width: 100%;
  color: #fff;
}
.slide .info .container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.slide .pname {
  font-family: var(--font-serif);
  font-size: 2.2rem;
}
.slide .pmeta {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.85;
}
.carousel-dots {
  position: absolute;
  bottom: 30px;
  right: 32px;
  display: flex;
  gap: 10px;
  z-index: 5;
}
.carousel-dots button {
  width: 28px;
  height: 2px;
  background: rgba(255, 255, 255, 0.4);
  border: none;
  cursor: pointer;
  padding: 0;
}
.carousel-dots button.on {
  background: #fff;
}

/* Intro split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.split img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

/* Project list (index) */
.proj-row {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 30px;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  transition: var(--transition);
}
.proj-row:last-child {
  border-bottom: 1px solid var(--line);
}
.proj-row:hover {
  padding-left: 12px;
}
.proj-row .num {
  font-family: var(--font-serif);
  color: var(--ink-soft);
}
.proj-row .name {
  font-family: var(--font-serif);
  font-size: 1.8rem;
}
.proj-row .meta {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Portfolio gallery */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 50px;
}
.filter-btn {
  padding: 8px 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover {
  color: var(--ink);
}
.filter-btn.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.g-item {
  cursor: pointer;
}
.g-item.hide {
  display: none;
}
.g-media {
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--surface);
}
.g-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.g-item:hover .g-media img {
  transform: scale(1.04);
}
.g-item h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-top: 16px;
}
.g-item .meta {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 4px;
}

/* Services */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.svc-card {
  background: var(--bg);
  padding: 48px;
}
.svc-card .num {
  font-family: var(--font-serif);
  color: var(--ink-soft);
  margin-bottom: 18px;
  display: block;
}
.svc-card h3 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  margin-bottom: 12px;
}
.svc-card p {
  color: var(--ink-soft);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(8, 8, 6, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.lightbox.active {
  display: flex;
}
.lightbox img {
  max-width: 90vw;
  max-height: 86vh;
}
.lightbox .close {
  position: absolute;
  top: 24px;
  right: 30px;
  font-size: 36px;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
}

/* Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
}
.field label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.field input,
.field textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  font: inherit;
  color: var(--ink);
  outline: none;
  transition: border-color var(--transition);
}
.field input:focus,
.field textarea:focus {
  border-color: var(--ink);
}
.field textarea {
  resize: vertical;
  min-height: 90px;
}
.field.error input,
.field.error textarea {
  border-color: #b4472c;
}
.err {
  color: #b4472c;
  font-size: 12px;
  min-height: 1em;
}
.form-status {
  font-weight: 600;
  margin-top: 8px;
}
.form-status.ok {
  color: var(--ink);
}
.info-row {
  margin-bottom: 30px;
}
.info-row h4 {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.info-row a,
.info-row p {
  font-family: var(--font-serif);
  font-size: 1.3rem;
}
.map-frame {
  width: 100%;
  height: 280px;
  border: 1px solid var(--line);
  margin-top: 30px;
}

/* Footer */
footer {
  padding: 70px 0 40px;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 50px;
}
.footer-grid .logo {
  font-size: 2.4rem;
}
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 13px;
  color: var(--ink-soft);
}
.footer-nav a:hover {
  color: var(--ink);
}
.copy {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.copy a {
  color: var(--ink);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* Responsivo */
@media (max-width: 1024px) {
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
}
@media (max-width: 760px) {
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .section {
    padding: 80px 0;
  }
  .gallery,
  .svc-grid {
    grid-template-columns: 1fr;
  }
  .proj-row {
    grid-template-columns: 40px 1fr;
  }
  .proj-row .meta {
    display: none;
  }
  .container {
    padding: 0 22px;
  }
}
@media (max-width: 420px) {
  .slide .pname {
    font-size: 1.6rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .slide {
    transition: none;
  }
}