HTML CSS Barra de Navegação Moderna

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Modern Navbar</title>
  <style>
    :root {
      --primary-color: #4a6cf7;
      --secondary-color: #6c757d;
      --dark-color: #212529;
      --white-color: #ffffff;
      --transition: all 0.3s ease-in-out;
    }

* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    }

body {
      background-color: #f8f9fa;
      color: var(--dark-color);
      line-height: 1.6;
    }

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

ul {
      list-style: none;
    }

.container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

/* Navbar Styles */
    .navbar {
      background-color: var(--white-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      height: 70px;
    }

.navbar-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }

.navbar-logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

.navbar-logo svg {
      width: 28px;
      height: 28px;
    }

.navbar-menu {
      display: flex;
      align-items: center;
      gap: 30px;
    }

.nav-item {
      position: relative;
    }

.nav-link {
      color: var(--dark-color);
      font-weight: 500;
      padding: 8px 0;
      position: relative;
      transition: var(--transition);
    }

.nav-link:hover, .nav-link.active {
      color: var(--primary-color);
    }

.nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary-color);
      transition: var(--transition);
    }

.nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

/* Dropdown Styles */
    .dropdown {
      position: relative;
    }

.dropdown-toggle {
      display: flex;
      align-items: center;
      gap: 5px;
      cursor: pointer;
    }

.dropdown-toggle svg {
      transition: var(--transition);
    }

.dropdown.active .dropdown-toggle svg {
      transform: rotate(180deg);
    }

.dropdown-menu {
      position: absolute;
      top: 100%;
      left: 0;
      background-color: var(--white-color);
      min-width: 200px;
      border-radius: 8px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
      padding: 10px 0;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: var(--transition);
      z-index: 100;
    }

.dropdown.active .dropdown-menu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

.dropdown-item {
      padding: 8px 20px;
      display: block;
      font-weight: 500;
      transition: var(--transition);
    }

.dropdown-item:hover {
      background-color: rgba(74, 108, 247, 0.1);
      color: var(--primary-color);
    }

/* Action Buttons */
    .navbar-actions {
      display: flex;
      align-items: center;
      gap: 15px;
    }

.action-btn {
      padding: 8px 20px;
      border-radius: 5px;
      font-weight: 500;
      transition: var(--transition);
      cursor: pointer;
    }

.btn-outline {
      border: 1.5px solid var(--primary-color);
      color: var(--primary-color);
      background-color: transparent;
    }

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

.btn-filled {
      background-color: var(--primary-color);
      color: var(--white-color);
      border: 1.5px solid var(--primary-color);
    }

.btn-filled:hover {
      background-color: transparent;
      color: var(--primary-color);
    }

/* Mobile Menu Toggle */
    .menu-toggle {
      display: none;
      cursor: pointer;
      width: 24px;
      height: 24px;
      position: relative;
      z-index: 101;
    }

.menu-toggle span {
      display: block;
      width: 100%;
      height: 2px;
      background-color: var(--dark-color);
      border-radius: 4px;
      position: absolute;
      transition: var(--transition);
    }

.menu-toggle span:nth-child(1) {
      top: 5px;
    }

.menu-toggle span:nth-child(2) {
      top: 50%;
      transform: translateY(-50%);
    }

.menu-toggle span:nth-child(3) {
      bottom: 5px;
    }

.menu-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

.menu-toggle.active span:nth-child(2) {
      opacity: 0;
    }

.menu-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

/* Main Content (for demo purposes) */
    .main-content {
      margin-top: 100px;
      padding: 20px;
      text-align: center;
    }

.main-content h1 {
      font-size: 2.5rem;
      margin-bottom: 20px;
      color: var(--primary-color);
    }

.main-content p {
      font-size: 1.1rem;
      max-width: 700px;
      margin: 0 auto;
    }

/* Responsive Styles */
    @media (max-width: 991px) {
      .menu-toggle {
        display: block;
      }

.navbar-menu {
        position: fixed;
        top: 0;
        right: -100%;
        background-color: var(--white-color);
        height: 100vh;
        width: 280px;
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 30px 30px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        gap: 15px;
        overflow-y: auto;
      }

.navbar-menu.active {
        right: 0;
      }

.nav-item {
        width: 100%;
      }

.nav-link {
        display: block;
        padding: 10px 0;
      }

.dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 15px;
        display: none;
        min-width: 100%;
        background-color: #f8f9fa;
        border-radius: 4px;
      }

.dropdown.active .dropdown-menu {
        display: block;
      }

.navbar-actions {
        flex-direction: column;
        width: 100%;
        margin-top: 15px;
        gap: 10px;
      }

.action-btn {
        width: 100%;
        text-align: center;
      }
    }
  </style>
</head>
<body>
  
  <nav class="navbar">
    <div class="container navbar-container">
      <a href="#" class="navbar-logo">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
          <path d="M12 5l0 14M5 12l14 0"></path>
        </svg>
        ModernNav
      </a>

<ul class="navbar-menu">
        <li class="nav-item">
          <a href="#" class="nav-link active">Home</a>
        </li>
        <li class="nav-item dropdown">
          <div class="dropdown-toggle nav-link">
            Features
            <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
              <path d="m6 9 6 6 6-6"/>
            </svg>
          </div>
          <ul class="dropdown-menu">
            <li><a href="#" class="dropdown-item">Feature One</a></li>
            <li><a href="#" class="dropdown-item">Feature Two</a></li>
            <li><a href="#" class="dropdown-item">Feature Three</a></li>
            <li><a href="#" class="dropdown-item">Feature Four</a></li>
          </ul>
        </li>
        <li class="nav-item dropdown">
          <div class="dropdown-toggle nav-link">
            Products
            <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
              <path d="m6 9 6 6 6-6"/>
            </svg>
          </div>
          <ul class="dropdown-menu">
            <li><a href="#" class="dropdown-item">Product One</a></li>
            <li><a href="#" class="dropdown-item">Product Two</a></li>
            <li><a href="#" class="dropdown-item">Product Three</a></li>
          </ul>
        </li>
        <li class="nav-item">
          <a href="#" class="nav-link">About</a>
        </li>
        <li class="nav-item">
          <a href="#" class="nav-link">Contact</a>
        </li>
        
        <div class="navbar-actions">
          <a href="#" class="action-btn btn-outline">Login</a>
          <a href="#" class="action-btn btn-filled">Sign Up</a>
        </div>
      </ul>
    </div>
  </nav>

<div class="main-content container">
    <h1>Modern Responsive Navbar</h1>
    <p>This is a fully responsive modern navbar with dropdown menus, mobile hamburger toggle, and smooth animations. Resize the browser to see how it adapts to different screen sizes.</p>
  </div>

// Toggle Mobile Menu
    menuToggle.addEventListener('click', () => {
      menuToggle.classList.toggle('active');
      navbarMenu.classList.toggle('active');
    });

// Handle Dropdowns
    dropdowns.forEach(dropdown => {
      const toggle = dropdown.querySelector('.dropdown-toggle');
      
      toggle.addEventListener('click', (e) => {
        e.preventDefault();
        
        // Close other dropdowns when opening a new one
        dropdowns.forEach(otherDropdown => {
          if (otherDropdown !== dropdown && otherDropdown.classList.contains('active')) {
            otherDropdown.classList.remove('active');
          }
        });
        
        dropdown.classList.toggle('active');
      });
    });

// Close dropdowns when clicking outside
    document.addEventListener('click', (e) => {
      if (!e.target.closest('.dropdown')) {
        dropdowns.forEach(dropdown => {
          dropdown.classList.remove('active');
        });
      }
    });

// Active Link State (for demo purposes)
    navLinks.forEach(link => {
      if (!link.parentElement.classList.contains('dropdown')) {
        link.addEventListener('click', () => {
          navLinks.forEach(otherLink => {
            otherLink.classList.remove('active');
          });
          link.classList.add('active');
        });
      }
    });

// Close mobile menu when a link is clicked
    document.querySelectorAll('.navbar-menu a').forEach(link => {
      link.addEventListener('click', () => {
        if (window.innerWidth <= 991) {
          menuToggle.classList.remove('active');
          navbarMenu.classList.remove('active');
        }
      });
    });

// Handle resize events to reset mobile menu state when switching to desktop
    window.addEventListener('resize', () => {
      if (window.innerWidth > 991) {
        if (menuToggle.classList.contains('active')) {
          menuToggle.classList.remove('active');
          navbarMenu.classList.remove('active');
        }
      }
    });
  </script>
</body>
</html>

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