/* --- VARIÁVEIS (Identidade Visual) --- */
:root {
  --primary-color: #0d2745; /* Azul Profundo */
  --primary-light: #183e6b;
  --secondary-color: #2b3036; /* Grafite */
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --border-color: #e5e7eb;

  --transition: all 0.3s ease;
  --radius: 8px;
  --radius-lg: 16px;
}

/* --- RESET & BASE --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.1rem;
}

section {
  padding: 80px 0;
}

/* --- BOTÕES --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(13, 39, 69, 0.2);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.125rem;
}

/* --- HEADER --- */
.header {
  background-color: var(--white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  letter-spacing: -0.5px;
}

.logo span {
  font-weight: 300;
  color: var(--secondary-color);
}

.nav {
  display: none; /* Mobile hidden by default */
}

.menu-mobile {
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--primary-color);
  cursor: pointer;
  display: block;
}

/* --- HERO --- */
.hero {
  background-color: var(--white);
  padding: 60px 0 80px;
}

.hero-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.hero-content h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--secondary-color);
}

.hero-content h1 span {
  color: var(--primary-color);
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.visual-placeholder {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, var(--bg-light) 0%, #e2e8f0 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--primary-light);
  border: 1px dashed var(--border-color);
}

/* --- PROJETOS --- */
.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
}

.btn-filter {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background-color: var(--white);
  color: var(--text-dark);
  border-radius: 30px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.btn-filter.active,
.btn-filter:hover {
  background-color: var(--primary-color);
  color: var(--white);
  border-color: var(--primary-color);
}

.projetos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.card-projeto {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.card-projeto:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.projeto-img-container {
  width: 100%;
  height: 220px;
  background-color: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.projeto-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Placeholder visual quando não tem imagem real */
.img-placeholder-text {
  position: absolute;
  color: #64748b;
  font-weight: 600;
  font-size: 0.875rem;
}

.projeto-info {
  padding: 24px;
}

.projeto-categoria {
  font-size: 0.875rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.projeto-info h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--secondary-color);
}

.projeto-info p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.projeto-links {
  display: flex;
  gap: 12px;
}

.btn-github {
  padding: 12px;
  border-radius: var(--radius);
  background-color: var(--bg-light);
  color: var(--secondary-color);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
}

.btn-github:hover {
  background-color: var(--secondary-color);
  color: var(--white);
}

/* --- SERVIÇOS & DIFERENCIAIS --- */
.servicos-grid,
.diferenciais-grid,
.processo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.card-servico,
.item-diferencial,
.card-processo {
  background-color: var(--white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.card-servico:hover {
  border-color: var(--primary-light);
}

.card-servico i,
.item-diferencial i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 16px;
}

.card-servico h3,
.item-diferencial h4,
.card-processo h4 {
  margin-bottom: 12px;
  color: var(--secondary-color);
}

.card-servico p,
.item-diferencial p,
.card-processo p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Processo específico */
.processo {
  background-color: var(--primary-color);
  color: var(--white);
}

.processo .section-header h2,
.processo .section-header p {
  color: var(--white);
}

.card-processo {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.card-processo .numero {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.3);
  margin-bottom: 16px;
}

.card-processo h4,
.card-processo p {
  color: var(--white);
}

/* --- SOBRE --- */
.sobre {
  background-color: var(--white);
}

.sobre-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.sobre-content h2 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 24px;
}

.sobre-content p {
  font-size: 1.125rem;
  color: var(--text-light);
}

/* --- CTA FINAL --- */
.cta {
  background-color: var(--bg-light);
}

.cta-container {
  text-align: center;
  background-color: var(--primary-color);
  padding: 60px 24px;
  border-radius: var(--radius-lg);
  color: var(--white);
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.cta p {
  margin-bottom: 32px;
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.8);
}

/* --- FOOTER --- */
.footer {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 60px 0 24px;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 48px;
  text-align: center;
}

.footer-brand h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.footer-brand h3 span {
  font-weight: 300;
}

.footer-brand p {
  color: #9ca3af;
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
}

.footer-links a {
  font-size: 1.5rem;
  color: var(--white);
  transition: var(--transition);
}

.footer-links a:hover {
  color: #9ca3af;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #9ca3af;
  font-size: 0.875rem;
}

/* --- RESPONSIVIDADE (Desktop / Tablets Maiores) --- */
@media (min-width: 768px) {
  /* Header & Nav */
  .menu-mobile {
    display: none;
  }

  .nav {
    display: flex;
    align-items: center;
    gap: 32px;
  }

  .nav-list {
    display: flex;
    gap: 24px;
  }

  .nav-list a {
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
  }

  .nav-list a:hover {
    color: var(--primary-color);
  }

  /* Hero */
  .hero-container {
    flex-direction: row;
    align-items: center;
  }

  .hero-content {
    flex: 1;
  }

  .hero-visual {
    flex: 1;
  }

  .hero-content h1 {
    font-size: 3.5rem;
  }

  .hero-buttons {
    flex-direction: row;
  }

  .visual-placeholder {
    height: 450px;
  }

  /* Grids */
  .projetos-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .servicos-grid,
  .diferenciais-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .processo-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .projetos-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}