/* === FIX: evitar que o conteúdo invada o menu === */
:root {
  --nav-height: 68px; /* altura reservada da navbar fixa (evita cobrir títulos) */
}

/* garante que o menu fica acima de tudo */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
}

/* reserva espaço no corpo da página para o menu fixo */
main {
  padding-top: calc(var(--nav-height) + 2px) !important;
}

@media (max-width: 900px) {
  main { padding-top: calc(var(--nav-height) + 4px) !important; }
}

/* === FIM DO FIX === */

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --text-color: #333;
  --background-color: #ffffff; /* branco de fundo global */
  --shadow: 0 2px 5px rgba(0,0,0,0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
}

.navbar {
  background-color: var(--primary-color);
  padding: .5rem 1rem;
  box-shadow: var(--shadow);
}

.nav-brand {
  color: white;
  font-size: 1.5rem;
  font-weight: bold;
  display: inline-block;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  float: right;
}

.nav-menu {
  display: flex;
  gap: 1rem;
  float: right;
}

.nav-item {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.3s;
  position: relative;
}

.nav-item:hover {
  background-color: var(--secondary-color);
}

.nav-item i {
  margin-right: 0.5rem;
}

/* Submenu dropdown */
.nav-item-dropdown {
  position: relative;
  display: inline-block;
}

.nav-item-dropdown::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 0.5rem;
}

.nav-item-dropdown > .nav-item {
  cursor: pointer;
}

.nav-submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--primary-color);
  min-width: 220px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  border-radius: 4px;
  margin-top: 0.25rem;
  z-index: 3000;
}

.nav-item-dropdown:hover .nav-submenu,
.nav-item-dropdown.active .nav-submenu {
  display: block;
}

.nav-submenu a {
  display: block;
  color: white;
  padding: 0.75rem 1rem;
  text-decoration: none;
  transition: background-color 0.3s;
  white-space: nowrap;
}

.nav-submenu-label {
  display: block;
  color: white;
  padding: 0.75rem 1rem;
  white-space: nowrap;
  opacity: 0.85;
  cursor: default;
  pointer-events: none;
}

.nav-submenu a:hover {
  background-color: var(--secondary-color);
}

.nav-submenu a:first-child {
  border-radius: 4px 4px 0 0;
}

.nav-submenu .nav-submenu-label:first-child {
  border-radius: 4px 4px 0 0;
}

.nav-submenu a:last-child {
  border-radius: 0 0 4px 4px;
}

.nav-submenu .nav-submenu-label:last-child {
  border-radius: 0 0 4px 4px;
}

.nav-submenu i {
  margin-right: 0.5rem;
  width: 1rem;
  text-align: center;
}

main {
  /* Layout global: aumenta área útil (listas/tabelas) com ~1cm de margem lateral */
  max-width: none;
  margin: 0;
  /* Não use shorthand de padding aqui para não sobrescrever o padding-top do FIX (navbar) */
  padding-left: 1cm;
  padding-right: 1cm;
  padding-bottom: 2rem;
  position: relative;
  z-index: 0;
}

.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-radius: 10px;
  margin: 80px auto 3rem auto;
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin-top: 120px;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero-text {
  font-size: 1.2rem;
  opacity: 0.9;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 2rem 0;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.feature-card h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--primary-color);
    padding: 1rem;
    box-shadow: var(--shadow);
  }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
  }

  .nav-item {
    width: 100%;
    text-align: left;
  }

  .nav-item-dropdown {
    width: 100%;
  }

  .nav-submenu {
    position: static;
    display: none;
    background-color: rgba(0,0,0,0.1);
    margin: 0.5rem 0 0.5rem 1rem;
    border-radius: 4px;
  }

  .nav-item-dropdown:hover .nav-submenu,
  .nav-item-dropdown.active .nav-submenu {
    display: block;
  }

  .features {
    grid-template-columns: 1fr;
  }

  /* Reduz o espaço entre o topo do frame e o título "Cronograma de Entrega" */
  main h1 {
    margin-top: 0.3rem;   /* era ~2rem ou mais, agora bem mais próximo do topo */
    margin-bottom: 0.5rem; /* mantém pequeno espaço abaixo do título */
    font-size: 1.8rem;     /* opcional: pode ajustar o tamanho se quiser mais compacto */
  }

}