/* ==========================================================================
   Camila Mansur — Arquitetura & Interiores
   CSS puro, mobile-first, sem framework.
   ========================================================================== */

:root {
  /* paleta neutra + acento terroso */
  --color-bg: #FAF8F4;
  --color-bg-alt: #F1ECE3;
  --color-surface: #FFFFFF;
  --color-ink: #292824;
  --color-ink-soft: #57544C;
  --color-line: #DCD5C7;
  --color-accent: #944F25;
  --color-accent-dark: #6E3A1A;

  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --wrap: 1180px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 2.75rem;
  --space-5: 4.5rem;
  --space-6: 7rem;

  --radius: 2px;
  --transition: 240ms ease;
}

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; height: auto; }
ul { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
}

h1 { font-size: clamp(2.2rem, 5vw + 1rem, 4.2rem); font-weight: 400; }
h2 { font-size: clamp(1.7rem, 2.6vw + 1rem, 2.6rem); }
h3 { font-size: 1.25rem; font-weight: 600; font-family: var(--font-sans); }

p { margin: 0 0 var(--space-2); color: var(--color-ink-soft); }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.sr-only {
  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: var(--space-2);
  top: -100px;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 0.75rem 1.25rem;
  z-index: 200;
  transition: top var(--transition);
  border-radius: var(--radius);
}
.skip-link:focus { top: var(--space-2); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-1);
}

.section-lead { max-width: 46ch; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.9rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-bg);
}
.btn-primary:hover { background: var(--color-accent-dark); }

.btn-ghost {
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.btn-ghost:hover { background: var(--color-ink); color: var(--color-bg); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  position: relative;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle-bar::before { transform: translateY(-7px); }
.nav-toggle-bar::after { transform: translateY(7px); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: rotate(-45deg); }

.nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
}
.nav.is-open { max-height: 400px; }
.nav a {
  padding: var(--space-2) var(--space-3);
  border-top: 1px solid var(--color-line);
  font-size: 0.95rem;
}
.nav-cta {
  color: var(--color-accent) !important;
  font-weight: 600;
}

@media (min-width: 780px) {
  .nav-toggle { display: none; }
  .nav {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
    max-height: none;
    overflow: visible;
    background: transparent;
    border: 0;
  }
  .nav a { padding: 0; border: 0; }
  .nav-cta {
    padding: 0.55rem 1.1rem !important;
    border: 1px solid var(--color-accent);
    border-radius: var(--radius);
  }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: var(--space-6) 0 var(--space-5);
  overflow: hidden;
}

.hero-line {
  position: absolute;
  right: -10%;
  top: 50%;
  transform: translateY(-50%);
  width: 620px;
  max-width: 60vw;
  opacity: 0.55;
  pointer-events: none;
}

.hero-inner { position: relative; max-width: 760px; }

.hero-title { max-width: 14ch; }

.hero-signature {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.3rem, 2vw + 0.6rem, 1.9rem);
  color: var(--color-accent);
  margin: var(--space-2) 0 var(--space-3);
}

.hero-lead {
  max-width: 42ch;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* ---------- sections ---------- */
.section { padding: var(--space-5) 0; }
.section-alt { background: var(--color-bg-alt); }

/* ---------- sobre ---------- */
.sobre-grid {
  display: grid;
  gap: var(--space-4);
}

.sobre-media img {
  border: 1px solid var(--color-line);
  width: 100%;
}

.formacao { margin-top: var(--space-2); }
.formacao li {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-top: 1px solid var(--color-line);
  color: var(--color-ink-soft);
  font-size: 0.95rem;
}
.formacao li:last-child { border-bottom: 1px solid var(--color-line); }
.formacao-ano {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  color: var(--color-accent);
  font-weight: 600;
  min-width: 3.5rem;
}

@media (min-width: 860px) {
  .sobre-grid {
    grid-template-columns: minmax(240px, 380px) 1fr;
    align-items: start;
    gap: var(--space-5);
  }
}

/* ---------- serviços ---------- */
.servicos-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  grid-template-columns: 1fr;
}

.servico-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  padding: var(--space-3);
  transition: transform var(--transition), box-shadow var(--transition);
}
.servico-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px -18px rgba(41, 40, 36, 0.25);
}

.servico-numero {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.servico-card p { margin-bottom: 0; font-size: 0.95rem; }

@media (min-width: 620px) {
  .servicos-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1020px) {
  .servicos-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- portfólio ---------- */
.portfolio-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  grid-template-columns: 1fr;
}

.portfolio-trigger {
  display: block;
  width: 100%;
  text-align: left;
  position: relative;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  overflow: hidden;
}

.portfolio-trigger img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 420ms ease;
}
.portfolio-trigger:hover img,
.portfolio-trigger:focus-visible img { transform: scale(1.045); }

.portfolio-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2);
  border-top: 1px solid var(--color-line);
}

.portfolio-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-ink);
}
.portfolio-tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  white-space: nowrap;
}

@media (min-width: 640px) {
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1020px) {
  .portfolio-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- contato ---------- */
.contato-grid {
  display: grid;
  gap: var(--space-4);
}

.contato-links { margin-top: var(--space-3); }
.contato-links li {
  border-top: 1px solid var(--color-line);
}
.contato-links li:last-child { border-bottom: 1px solid var(--color-line); }
.contato-links a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  transition: color var(--transition);
}
.contato-links a:hover { color: var(--color-accent); }
.contato-label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.contato-value { font-family: var(--font-serif); font-size: 1.05rem; }

.contato-form {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field { display: flex; flex-direction: column; gap: 0.35rem; }
.form-field label {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.form-field input,
.form-field textarea {
  border: 1px solid var(--color-line);
  background: var(--color-bg);
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius);
  resize: vertical;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  border-color: var(--color-accent);
}

.contato-form .btn { margin-top: var(--space-1); align-self: flex-start; }
.form-note {
  font-size: 0.8rem;
  color: var(--color-ink-soft);
  margin: 0;
}

@media (min-width: 900px) {
  .contato-grid { grid-template-columns: 1fr 1fr; align-items: start; gap: var(--space-5); }
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: var(--color-bg);
  padding: var(--space-4) 0 var(--space-3);
}
.footer-inner { text-align: center; }
.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-bg);
}
.footer-tagline {
  color: #C9C2B4;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.footer-links a:hover { border-color: var(--color-accent); }
.footer-copy {
  font-size: 0.78rem;
  color: #9C9789;
  margin: 0;
}

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
}
.lightbox[hidden] { display: none; }

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 19, 16, 0.88);
}

.lightbox-dialog {
  position: relative;
  z-index: 1;
  background: var(--color-bg);
  max-width: min(900px, 92vw);
  max-height: 92vh;
  overflow: auto;
  padding: var(--space-2);
  border-radius: var(--radius);
}

.lightbox-img {
  width: 100%;
  height: auto;
  border: 1px solid var(--color-line);
}

.lightbox-caption { padding: var(--space-2) var(--space-1) 0; }
.lightbox-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-ink);
  margin-bottom: 0.2rem;
}
.lightbox-desc {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  margin: 0;
}

.lightbox-close {
  position: absolute;
  top: -0.4rem;
  right: -0.4rem;
  width: 40px;
  height: 40px;
  background: var(--color-ink);
  color: var(--color-bg);
  font-size: 1.4rem;
  line-height: 1;
  border-radius: 50%;
}

.lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: rgba(250, 248, 244, 0.9);
  color: var(--color-ink);
  font-size: 1.8rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox-prev { left: var(--space-2); }
.lightbox-next { right: var(--space-2); }

@media (max-width: 640px) {
  .lightbox-nav { display: none; }
}

/* ---------- scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms ease, transform 640ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* stagger children slightly within grids */
.servicos-grid .servico-card:nth-child(2) { transition-delay: 60ms; }
.servicos-grid .servico-card:nth-child(3) { transition-delay: 120ms; }
.servicos-grid .servico-card:nth-child(4) { transition-delay: 180ms; }

.portfolio-grid .portfolio-item:nth-child(2) { transition-delay: 60ms; }
.portfolio-grid .portfolio-item:nth-child(3) { transition-delay: 120ms; }
.portfolio-grid .portfolio-item:nth-child(5) { transition-delay: 60ms; }
.portfolio-grid .portfolio-item:nth-child(6) { transition-delay: 120ms; }

/* ---------- large screens ---------- */
@media (min-width: 1600px) {
  :root { --wrap: 1400px; }
  body { font-size: 1.08rem; }
}