:root {
  --color-bg: #faf8f4;
  --color-bg-alt: #eef2ee;
  --color-text: #2b2b28;
  --color-text-light: #55564f;
  --color-primary: #33534a;
  --color-primary-dark: #223b32;
  --color-accent: #c17f4e;
  --color-accent-dark: #a3673c;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', Arial, sans-serif;
  --max-text: 760px;
  --max-wide: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--color-primary-dark); color: #fff; padding: 12px 20px; z-index: 2000; border-radius: 0 0 8px 0; font-weight: 600; text-decoration: none; }
.skip-link:focus { left: 0; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 17px;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-heading); color: var(--color-primary-dark); line-height: 1.25; margin: 0 0 20px; }
h1 { font-size: 2.6rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.35rem; }
p { margin: 0 0 18px; }
em { font-style: normal; color: var(--color-accent-dark); font-weight: 600; }
.container { max-width: var(--max-text); margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: var(--max-wide); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 244, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.header-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { font-family: var(--font-heading); font-size: 1.3rem; font-weight: 700; color: var(--color-primary-dark); text-decoration: none; }
.logo span { display: block; font-family: var(--font-body); font-size: 0.7rem; font-weight: 400; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-accent-dark); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; color: var(--color-text); font-weight: 500; font-size: 0.95rem; padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav-links a:hover, .nav-links a.active { color: var(--color-primary); border-bottom-color: var(--color-accent); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; cursor: pointer; color: var(--color-primary-dark); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links { position: absolute; top: 100%; left: 0; right: 0; background: var(--color-bg); flex-direction: column; align-items: flex-start; padding: 20px 24px; gap: 16px; border-bottom: 1px solid rgba(0,0,0,0.08); display: none; }
  .nav-links.open { display: flex; }
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #f7f4ee;
  padding: 110px 24px 90px;
  text-align: center;
}
.hero .eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.8rem; color: var(--color-accent); font-weight: 600; margin-bottom: 18px; }
.hero h1 { color: #fdfbf7; max-width: 780px; margin-left: auto; margin-right: auto; }
.hero p.lead { max-width: 620px; margin: 0 auto; color: #e4e2d9; font-size: 1.1rem; }
.hero-page { padding: 90px 24px 70px; }

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-title { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-title p { color: var(--color-text-light); }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--color-accent);
color: #fff;
  padding: 15px 34px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.2s ease, transform 0.2s ease;
  border: none;
  cursor: pointer;
}
.btn:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn-block {
  display: block;
  width: 100%;
  text-align: center;
  border-radius: 0;
  padding: 26px;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.btn-center-wrap { text-align: center; margin: 40px 0; }
.text-center { text-align: center; }

/* About block */
.about-block { display: flex; gap: 56px; align-items: flex-start; flex-wrap: wrap; }
.about-photo { flex: 1 1 300px; max-width: 360px; aspect-ratio: 7 / 10; border-radius: 16px; overflow: hidden; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); position: relative; }
.about-text { flex: 2 1 420px; }
.about-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }

.about-block--pub { align-items: center; }
.pub-intro-lead { font-size: 24px; line-height: 1.5; color: var(--color-primary-dark); font-weight: 500; }
.pub-intro-credentials { margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(0,0,0,0.1); font-size: 14px; letter-spacing: 0.03em; color: var(--color-text-light); text-transform: uppercase; }
.pub-intro-note { margin-top: 16px; font-size: 14px; color: var(--color-text-light); font-style: normal; }

/* Topics (temas de trabalho) */
.topics-list { display: flex; flex-direction: column; margin-top: 40px; }
.topic-block { display: flex; gap: 28px; padding: 36px 0; border-bottom: 1px solid rgba(0,0,0,0.08); }
.topic-block:first-child { padding-top: 0; }
.topic-block:last-child { border-bottom: none; padding-bottom: 0; }
.topic-block .icon { width: 54px; height: 54px; border-radius: 50%; background: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; flex-shrink: 0; box-shadow: 0 8px 22px rgba(34,59,50,0.1); }
.topic-text h3 { margin-bottom: 14px; }
.topic-text p { color: var(--color-text-light); margin-bottom: 14px; }
.topic-text p:last-child { margin-bottom: 0; }

/* Info grid */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; margin-top: 40px; text-align: center; }
.info-item { background: #fff; padding: 30px 24px; border-radius: 14px; }
.info-item h3 { color: var(--color-accent-dark); }
.info-item p { color: var(--color-text-light); }

/* FAQ */
.faq-item { border-bottom: 1px solid rgba(0,0,0,0.08); padding: 6px 0; }
.faq-item summary { cursor: pointer; font-family: var(--font-heading); font-weight: 600; font-size: 1.25rem; padding: 18px 4px; list-style: none; display: flex; justify-content: space-between; align-items: center; color: var(--color-primary-dark); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.4rem; color: var(--color-accent); margin-left: 20px; }
.faq-item[open] summary::after { content: '\2212'; }
.faq-item p { padding: 0 4px 20px; color: var(--color-text-light); }

/* Timeline (Sobre) */
.timeline-item { border-left: 3px solid var(--color-accent); padding: 4px 0 28px 24px; margin-left: 6px; }
.timeline-item .year { font-weight: 700; color: var(--color-accent-dark); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.06em; }

/* Publications */
.pub-group { margin-bottom: 44px; }
.pub-item { background: #fff; border-radius: 12px; padding: 24px 28px; margin-bottom: 16px; box-shadow: 0 6px 18px rgba(34,59,50,0.06); }
.pub-item .pub-title { font-weight: 600; margin-bottom: 6px; }
.pub-item .pub-title a { color: var(--color-primary-dark); text-decoration: underline; text-decoration-color: var(--color-accent); text-underline-offset: 3px; }
.pub-item .pub-title a:hover { color: var(--color-accent-dark); }
.pub-item .pub-meta { color: var(--color-text-light); font-size: 0.92rem; }

/* Contact form */
.contact-form { max-width: 560px; margin: 40px auto 0; display: grid; gap: 18px; }
.contact-form label { font-weight: 600; margin-bottom: 6px; display: block; }
.contact-form input, .contact-form textarea { width: 100%; padding: 14px 16px; border-radius: 8px; border: 1px solid rgba(0,0,0,0.15); font-family: var(--font-body); font-size: 1rem; background: #fff; }
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-note { text-align: center; color: var(--color-text-light); font-size: 0.9rem; margin-top: 14px; }

/* Footer */
.site-footer { background: var(--color-primary-dark); color: #e7e5db; padding: 56px 24px 30px; text-align: center; }
.footer-social { display: flex; justify-content: center; gap: 20px; margin-bottom: 24px; }
.footer-social a { width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; text-decoration: none; transition: background 0.2s; }
.footer-social a:hover { background: var(--color-accent); }
.footer-social svg { width: 20px; height: 20px; fill: #f7f4ee; }
.site-footer .copy { font-size: 0.85rem; color: #b9b8ae; }

@media (max-width: 700px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.55rem; }
  .section { padding: 48px 0; }
  .about-block { gap: 32px; }
  .topic-block { flex-direction: column; gap: 14px; }
}