/* ============================================================
   🎨 Estilo Principal — João Leonardo / Projeto LOGOS
   Tema: Azul-petróleo + turquesa + cinza-claro
   Layout: Modular, responsivo, elegante
   ============================================================ */

/* ------------------------------------------------------------
   🧩 01. RESET + VARIÁVEIS
------------------------------------------------------------ */
:root {
  --color-bg: #f7f9fa;
  --color-bg-alt: #ffffff;
  --color-dark: #0b1b3b;
  --color-primary: #007782;
  --color-accent: #00d1d1;
  --color-text: #222;
  --color-muted: #666;
  --max-width: 1000px;
  --radius: 14px;
  --transition: 0.3s ease;
  --space-section: 6rem;
}

/* 🌙 Dark mode automático */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0b1b3b;
    --color-bg-alt: #111a2a;
    --color-text: #e8f6f6;
    --color-muted: #a0b0b5;
  }
  body {
    background: var(--color-bg);
    color: var(--color-text);
  }
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Inter", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* ------------------------------------------------------------
   🧭 02. NAVBAR
------------------------------------------------------------ */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  z-index: 1000;
}
@media (prefers-color-scheme: dark) {
  .navbar {
    background: rgba(20,32,48,0.75);
    backdrop-filter: blur(10px);
  }
}

.nav-container {
  max-width: var(--max-width);
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.5rem;
}

.navbar a {
  text-decoration: none;
  color: var(--color-dark);
  margin: 0 0.8rem;
  font-weight: 500;
  transition: color var(--transition);
}
.navbar a:hover {
  color: var(--color-primary);
}
@media (prefers-color-scheme: dark) {
  .navbar a { color: var(--color-text); }
}

.brand {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.lang-switch {
  margin-left: 1rem;
  font-weight: 600;
}
.lang-switch a {
  color: var(--color-primary);
}
.lang-switch .active {
  text-decoration: underline;
}

.navbar a {
  position: relative;
}

.navbar a::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.25s ease;
}

.navbar a:hover::after {
  width: 100%;
}

/* ------------------------------------------------------------
   🏞️ HERO SECTION — Fundo escuro + texto claro (com grid)
------------------------------------------------------------ */
.hero {
  padding-top: 5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #081027, #0b1b3b 70%);
  color: #f7f9fa;
}

/* estrutura do grid */
.hero-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: center;
  max-width: var(--max-width);
  width: 100%;
  padding: 2rem;
}
@media (max-width: 800px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1.5rem;
  }
}

/* foto de perfil */
.profile-photo {
  width: 240px;
  height: 240px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid #00d1d1;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
  display: block;
  margin: auto;
}

/* texto do hero */
.hero-text h1 {
  font-size: 2.4rem;
  font-weight: 600;
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  margin-bottom: 0.4rem;
}

.hero-text h2 {
  font-size: 1.2rem;
  font-weight: 400;
  color: #9be4e3; /* turquesa claro LOGOS */
  margin-bottom: 1.2rem;
}

.hero-text .tagline {
  margin: 1rem 0 2rem;
  color: #e0e6ea; /* cinza-claro suave */
  max-width: 600px;
  line-height: 1.6;
}

.btn-hero {
  background: #00d1d1;
  color: #0b1b3b;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}
.btn-hero:hover {
  background: #9be4e3;
  color: #0b1b3b;
}

.btn-hero {
  background: linear-gradient(135deg, var(--color-accent), #7ef0ee);
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}
.btn-hero:hover {
  background: linear-gradient(135deg, #7ef0ee, var(--color-accent));
}


/* ------------------------------------------------------------
   🧭 04. SEÇÕES
------------------------------------------------------------ */
.section {
  padding: var(--space-section) 1.5rem;
  max-width: var(--max-width);
  margin: auto;
  animation: fadeInUp 1s ease both;
  scroll-margin-top: 80px; /* evita sobreposição com navbar fixa */
}
.section--alt {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
}
.section h3 {
  text-align: center;
  font-size: 1.6rem;
  color: var(--color-dark);
  margin-bottom: 2rem;
}
@media (prefers-color-scheme: dark) {
  .section h3 { color: var(--color-accent); }
}

.section-content {
  max-width: 900px;
  margin: auto;
}
.section-content p {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

/* ------------------------------------------------------------
   🧱 05. CARDS
------------------------------------------------------------ */
.cards {
  display: grid;
  gap: 1.8rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: #fff;
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 1.6rem;
  box-shadow: 0 3px 8px rgba(0,0,0,0.05);
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  border-left-color: var(--color-accent);
  box-shadow: 0 6px 12px rgba(0,0,0,0.08);
}
@media (prefers-color-scheme: dark) {
  .card { background: var(--color-bg-alt); }
}

/* ------------------------------------------------------------
   📚 06. PUBLICAÇÕES ACADÊMICAS
------------------------------------------------------------ */
#publicacoes .card h4 {
  font-size: 1rem;
  color: var(--color-dark);
  margin-bottom: 0.6rem;
}
#publicacoes .card p {
  color: var(--color-muted);
  font-size: 0.95rem;
}
#publicacoes .btn {
  margin-top: 0.8rem;
}
@media (prefers-color-scheme: dark) {
  #publicacoes .card h4 { color: var(--color-accent); }
  #publicacoes .card p { color: var(--color-text); }
}

/* ------------------------------------------------------------
   🗺️ 07. PORTFÓLIO
------------------------------------------------------------ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.portfolio-grid figure {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
}
.portfolio-grid img {
  width: 100%;
  display: block;
  transition: transform var(--transition), filter var(--transition);
}
.portfolio-grid figcaption {
  position: absolute;
  bottom: 0;
  width: 100%;
  background: rgba(0,0,0,0.6);
  color: #fff;
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  opacity: 0;
  transition: var(--transition);
}
.portfolio-grid figure:hover img {
  transform: scale(1.05);
  filter: brightness(85%);
}
.portfolio-grid figure:hover figcaption {
  opacity: 1;
}

/* ------------------------------------------------------------
   💬 08. CONTATO
------------------------------------------------------------ */
.center { text-align: center; }

.contact-icons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 1.5rem 0;
}
.contact-icons a {
  color: var(--color-primary);
  font-size: 1.6rem;
  transition: color var(--transition), transform var(--transition);
}
.contact-icons a:hover {
  color: var(--color-accent);
  transform: scale(1.1);
}

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
}
.btn:hover {
  background: var(--color-accent);
}

/* ------------------------------------------------------------
   📄 09. CURRÍCULOS (CV + LATTES)
------------------------------------------------------------ */
.curriculos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 1.5rem;
}
.curriculos .btn {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  transition: var(--transition);
}
.curriculos .btn:hover {
  background: var(--color-accent);
  color: var(--color-dark);
}

/* ------------------------------------------------------------
   ⚙️ 10. FOOTER
------------------------------------------------------------ */
.footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-muted);
  padding: 2rem 1rem;
  margin-top: 4rem;
}
.footer a {
  color: var(--color-primary);
  text-decoration: none;
}

/* ------------------------------------------------------------
   ✨ 11. ANIMAÇÕES
------------------------------------------------------------ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.profile-photo {
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.profile-photo:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 16px rgba(0,0,0,0.5);
}