:root {
  --ink: #0c100e;
  --ink-soft: #161c18;
  --pine: #1a3930;
  --paper: #f3eee4;
  --paper-2: #e8e0d2;
  --copper: #c9a36a;
  --copper-deep: #8d6233;
  --moss: #4a6b5a;
  --muted: #8a8378;
  --line: rgba(201, 163, 106, 0.35);
  --shadow: 0 24px 60px rgba(12, 16, 14, 0.28);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --sans: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

html[data-lang="en-US"] [lang="pt-BR"],
html[data-lang="pt-BR"] [lang="en-US"] {
  display: none !important;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

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

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--copper);
  color: var(--ink);
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

.wrap {
  width: min(1120px, calc(100% - 2.4rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(12, 16, 14, 0.72);
  color: var(--paper);
  border-bottom: 1px solid rgba(201, 163, 106, 0.18);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.brand-name {
  font-family: var(--serif);
  font-size: 1.2rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(243, 238, 228, 0.78);
}
.nav-links a:hover { color: var(--copper); }

.lang-switch {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
}

.lang-switch button {
  background: transparent;
  color: var(--paper);
  border: 0;
  padding: 0.35rem 0.7rem;
  font: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  cursor: pointer;
}
.lang-switch button[aria-pressed="true"] {
  background: var(--copper);
  color: var(--ink);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--paper);
  width: 42px;
  height: 42px;
  border-radius: 8px;
  cursor: pointer;
}

.contact-bar {
  background: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: 0.86rem;
}
.contact-bar .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
  align-items: center;
  min-height: 42px;
  padding-block: 0.45rem;
}
.contact-bar a {
  color: var(--copper);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.contact-bar a:hover { text-decoration: underline; }
.contact-bar .label {
  color: rgba(243, 238, 228, 0.62);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.68rem;
  margin-right: 0.4rem;
}

.contact-lines {
  display: grid;
  gap: 0.85rem;
  margin: 1.2rem 0 0;
}
.contact-lines .label {
  display: block;
  color: var(--copper);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.15rem;
}
.contact-lines a {
  color: var(--paper);
  text-decoration: none;
  font-size: 1.05rem;
}
.contact-lines a:hover { color: var(--copper); }

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  color: var(--paper);
  background: var(--ink) center/cover no-repeat;
  display: grid;
  align-items: end;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(12,16,14,0.25) 0%, rgba(12,16,14,0.55) 45%, rgba(12,16,14,0.92) 100%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 0 0 4.5rem;
}
.kicker {
  color: var(--copper);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.74rem;
  margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: 1.05;
  margin: 0 0 1.2rem;
  max-width: 14ch;
}
.lede {
  max-width: 42rem;
  font-size: 1.15rem;
  color: rgba(243, 238, 228, 0.86);
  margin: 0 0 2rem;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(243, 238, 228, 0.7);
}
.cta-row { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 2.2rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 0.85rem 1.25rem;
  border-radius: 2px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.75rem;
  border: 1px solid transparent;
}
.btn-primary { background: var(--copper); color: var(--ink); }
.btn-ghost { border-color: var(--line); color: var(--paper); }
.btn-dark { background: var(--ink); color: var(--paper); }
.btn-line { border-color: var(--ink); }

/* Sections */
section { padding: 5.5rem 0; }
.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 1rem;
}
.section-kicker {
  color: var(--copper-deep);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.72rem;
  margin: 0 0 0.8rem;
}
.hairline {
  width: 64px;
  height: 1px;
  background: var(--copper);
  margin: 0 0 2rem;
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: start;
}

.facts {
  background: var(--ink);
  color: var(--paper);
  padding: 2rem;
  border-radius: 2px;
}
.facts dt {
  color: var(--copper);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 1.1rem;
}
.facts dt:first-child { margin-top: 0; }
.facts dd { margin: 0.25rem 0 0; }
.facts a { color: var(--copper); text-decoration: none; }
.facts a:hover { text-decoration: underline; }

.profile-intro { max-width: 46rem; }
.profile-link { margin: 0 0 2.2rem; }
.profile-link a { color: var(--copper-deep); }
.subhead {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 500;
  margin: 2.2rem 0 0.8rem;
}
.note { font-size: 0.92rem; color: var(--muted); margin: 0 0 1rem; }
.role-list, .course-grid {
  list-style: none;
  margin: 0;
  padding: 0;
}
.role-list li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--paper-2);
}
.role-list strong { display: block; }
.role-list .meta {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
}
.course-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--paper-2);
}
.course-grid li {
  padding: 0.85rem 1.2rem 0.85rem 0;
  border-bottom: 1px solid var(--paper-2);
  font-size: 0.95rem;
}
.course-grid li:nth-child(odd) { padding-right: 1.6rem; border-right: 1px solid var(--paper-2); }
.course-grid li:nth-child(even) { padding-left: 1.6rem; }
.course-grid code {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--copper-deep);
}
.quote {
  margin: 2.4rem 0 0;
  padding: 1.6rem 1.8rem;
  background: #fffdf8;
  border-left: 3px solid var(--copper);
}
.quote p { margin: 0 0 0.8rem; font-family: var(--serif); font-size: 1.15rem; }
.quote cite { font-style: normal; font-size: 0.82rem; letter-spacing: 0.06em; color: var(--muted); }

.services {
  background: var(--ink-soft);
  color: var(--paper);
}
.services .section-kicker { color: var(--copper); }
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
.service {
  padding: 1.8rem 1.4rem 1.8rem 0;
  border-bottom: 1px solid var(--line);
}
.service:nth-child(odd) { padding-right: 2rem; border-right: 1px solid var(--line); }
.service:nth-child(even) { padding-left: 2rem; }
.service-num {
  color: var(--copper);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
}
.service h3 {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 500;
  margin: 0.4rem 0 0.5rem;
}
.service p { margin: 0; color: rgba(243, 238, 228, 0.78); }

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.principle {
  background: #fffdf8;
  border: 1px solid var(--paper-2);
  padding: 1.6rem;
}
.principle h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin: 0 0 0.6rem;
}

.contact {
  background:
    linear-gradient(180deg, rgba(12,16,14,0.72), rgba(12,16,14,0.88)),
    center/cover no-repeat;
  color: var(--paper);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}
.contact a { color: var(--copper); }
.contact form {
  display: grid;
  gap: 0.9rem;
}
label { font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(243,238,228,0.75); }
input, textarea {
  width: 100%;
  background: rgba(243, 238, 228, 0.06);
  border: 1px solid var(--line);
  color: var(--paper);
  padding: 0.8rem 0.9rem;
  font: inherit;
  border-radius: 2px;
}
textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: 0.85rem; color: rgba(243,238,228,0.7); margin: 0; }
.form-status { min-height: 1.3em; font-size: 0.9rem; color: var(--copper); }

.legal-block {
  font-size: 0.92rem;
  color: rgba(243,238,228,0.8);
}
.legal-block p { margin: 0.4rem 0; }

footer {
  background: var(--ink);
  color: rgba(243,238,228,0.7);
  padding: 2rem 0 2.6rem;
  font-size: 0.88rem;
}
.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}
footer a { color: var(--copper); text-decoration: none; }

.page-hero {
  background: var(--ink);
  color: var(--paper);
  padding: 7rem 0 3rem;
}
.prose { max-width: 46rem; }
.prose h2 { font-family: var(--serif); font-weight: 500; }
.prose a { color: var(--copper-deep); }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 72px;
    background: rgba(12,16,14,0.96);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.2rem 1.4rem;
    gap: 1rem;
  }
  .nav-links.open { display: flex; }
  .split, .service-grid, .principles, .contact-grid, .course-grid { grid-template-columns: 1fr; }
  .service:nth-child(odd), .service:nth-child(even),
  .course-grid li:nth-child(odd), .course-grid li:nth-child(even) {
    border-right: 0;
    padding-left: 0;
    padding-right: 0;
  }
  .hero { min-height: 86vh; }
  .contact-bar .wrap { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
}