/* 🌱 Variáveis e Reset */
:root {
    --lumiar-blue: #0a3871;
    --lumiar-green: #87CEFA;         /* ⬅️ Novo tom para cabeçalho e botões */
    --lumiar-yellow: #ffc107;
    --lumiar-dark: #1a1a1a;
    --lumiar-light: #f5f5f5;
    --lumiar-footer-bg: #87CEFA;     /* ⬅️ Novo tom para o rodapé */
  }
  
  html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Arial', sans-serif;
    background: var(--lumiar-light);
    overflow-x: hidden;
  }
  
  body {
    display: flex;
    flex-direction: column;
  }
  
  main {
    flex: 1 0 auto;
  }
  
  body > *:last-child {
    margin-bottom: 0 !important;
    padding-bottom: 0 !important;
  }
  
  /* 🟢 Cabeçalho */
  header {
    background: var(--lumiar-green);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
  }
  
  .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
  }
  
  .logo img {
    height: 50px;
    cursor: pointer;
  }
  
  nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    padding: 0;
    margin: 0;
  }
  
  nav ul li a {
    color: white;
    font-weight: bold;
    text-decoration: none;
    padding: 10px;
    transition: 0.3s;
  }
  
  nav ul li a:hover {
    color: var(--lumiar-yellow);
  }
  
  .btn-platform {
    background-color: white;
    color: var(--lumiar-green);
    padding: 10px 20px;
    border: none;
    border-radius: 999px;
    font-weight: bold;
    font-size: 16px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
  }
  
  .btn-platform:hover {
    background-color: var(--lumiar-green);
    color: white;
    transform: scale(1.03);
  }
  
  /* ☰ Menu Hamburguer */
  .menu-toggle {
    display: none;
    font-size: 28px;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
  }
  
  /* 🔍 Validação */
  #validar-certificado {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 140px 20px 60px;
    width: 100%;
    background: linear-gradient(135deg, #e9f5ef, #f4f9f6);
  }
  
  .validation-container {
    background: white;
    border-radius: 20px;
    padding: 50px 30px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
    max-width: 720px;
    width: 100%;
    text-align: center;
    transition: transform 0.3s ease;
  }
  
  .validation-container:hover {
    transform: scale(1.01);
  }
  
  .validation-icon {
    font-size: 40px;
    color: var(--lumiar-green);
    margin-bottom: 15px;
  }
  
  .validation-container h2 {
    font-size: 32px;
    color: var(--lumiar-blue);
    font-weight: 700;
    margin-bottom: 15px;
  }
  
  .validation-container p {
    font-size: 18px;
    color: #444;
    margin-bottom: 30px;
    line-height: 1.6;
  }
  
  /* ℹ️ Sobre Nós */
  .about {
    background: white;
    padding: 60px 20px;
    text-align: center;
  }
  
  .about-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
  }
  
  .about-text {
    flex: 1 1 400px;
    text-align: left;
  }
  
  .about h2 {
    font-size: 32px;
    color: var(--lumiar-blue);
    margin-bottom: 20px;
  }
  
  .about-content {
    font-size: 18px;
    line-height: 1.8;
    color: var(--lumiar-dark);
  }
  
  .about-image {
    flex: 1 1 300px;
  }
  
  .about-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
  }
  
  /* 📌 Rodapé */
  footer {
    background: var(--lumiar-footer-bg);
    color: white;
    padding: 20px 0;
    width: 100%;
  }
  
  .footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
    padding: 0 40px;
    box-sizing: border-box;
  }
  
  .footer-contact,
  .footer-info,
  .social-icons {
    flex: 1;
    text-align: center;
  }
  
  .social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
  }
  
  .social-icons a {
    font-size: 24px;
    color: white;
    text-decoration: none;
    transition: 0.3s;
  }
  
  .social-icons a:hover {
    color: var(--lumiar-yellow);
    transform: scale(1.2);
  }
  
  /* 📱 Responsivo */
  @media (max-width: 768px) {
    .menu-toggle {
      display: block;
      position: absolute;
      right: 20px;
      top: 15px;
      z-index: 1100;
    }
  
    nav {
      position: absolute;
      top: 100%;
      right: 0;
      width: 100%;
    }
  
    nav ul {
      flex-direction: column;
      background: var(--lumiar-green);
      width: 100%;
      max-height: 0;
      overflow: hidden;
      opacity: 0;
      visibility: hidden;
      transition: max-height 0.4s ease, opacity 0.4s ease;
    }
  
    nav ul.show {
      max-height: 500px;
      opacity: 1;
      visibility: visible;
    }
  
    nav ul li {
      width: 100%;
      text-align: center;
    }
  
    nav ul li a {
      display: block;
      padding: 15px;
      border-top: 1px solid rgba(255, 255, 255, 0.2);
    }
  
    .btn-platform {
      margin: 10px auto;
    }
  
    .about-wrapper {
      flex-direction: column;
      align-items: center;
    }
  
    .footer-container {
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding: 20px;
    }
  }
  
  /* 🔘 Botão moderno reutilizável */
  .btn-lumiar {
    background-color: var(--lumiar-green);
    color: #fff;
    font-size: 18px;
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s ease, transform 0.2s;
  }
  
  .btn-lumiar::after {
    content: "→";
    font-size: 20px;
    transition: transform 0.2s;
  }
  
  .btn-lumiar:hover::after {
    transform: translateX(5px);
  }
  
  .btn-lumiar:hover {
    background-color: #166534;
    transform: scale(1.05);
  }