/* ===== RESET E VARIÁVEIS ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #023882;
  --primary-light: #1a5bb8;
  --secondary: #2e7d32;
  --secondary-light: #4caf50;
  --white: #ffffff;
  --light: #f8f9fa;
  --gray: #6c757d;
  --dark: #212529;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--white);
  color: var(--dark);
  line-height: 1.5;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== ACESSIBILIDADE ===== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 8px 12px;
  text-decoration: none;
  z-index: 9999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid #ffb74d;
}
a:focus, button:focus, input:focus, select:focus, textarea:focus {
  outline: 3px solid #ffb74d;
  outline-offset: 2px;
}

/* ===== HEADER ===== */
header {
  background: var(--primary);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 16px 0;
}
.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo-container img {
  height: 50px;
  width: auto;
  filter: brightness(0) invert(1);
}

/* Menu Hamburguer */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
  margin-left: auto;
}
.line {
  width: 25px;
  height: 3px;
  background: var(--white);
  margin: 5px 0;
  transition: var(--transition);
  display: block;
}

.menu-nav {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  font-weight: 500;
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
}
.nav-link:hover, .nav-link.active {
  color: var(--secondary-light);
}
.has-submenu {
  position: relative;
}
.submenu-container {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  min-width: 250px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 10;
}
.has-submenu:hover .submenu-container,
.has-submenu:focus-within .submenu-container {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.submenu {
  list-style: none;
  padding: 10px 0;
}
.submenu li a {
  color: #1e2a32;
  padding: 10px 20px;
  display: block;
  font-size: 0.9rem;
}
.submenu li a:hover {
  background: var(--light);
  padding-left: 25px;
  color: var(--primary);
}

/* Mobile */
@media (max-width: 992px) {
  .hamburger {
    display: block;
  }
  .menu-nav {
    display: none;
    position: fixed;
    top: 70px;
    right: 0;
    width: 280px;
    height: calc(100vh - 70px);
    background: var(--primary);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: -5px 0 15px rgba(0,0,0,0.2);
    border-radius: 0 0 0 10px;
  }
  .menu-nav.active {
    display: flex;
  }
  .menu-nav li {
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 8px 0;
  }
  .menu-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    font-size: 1rem;
  }
  .has-submenu > .nav-link::after {
    content: '▼';
    float: right;
    font-size: 10px;
    transition: transform 0.3s;
    margin-left: auto;
  }
  .has-submenu.active > .nav-link::after {
    transform: rotate(180deg);
  }
  .submenu-container {
    position: static;
    background: rgba(255,255,255,0.1);
    box-shadow: none;
    display: none;
    margin-top: 10px;
    margin-left: 20px;
    border-radius: 8px;
  }
  .has-submenu.active .submenu-container {
    display: block;
  }
  .submenu li a {
    color: var(--white);
    padding: 8px 15px;
    font-size: 0.9rem;
  }
  .submenu li a:hover {
    background: rgba(255,255,255,0.2);
  }
}

@media (min-width: 993px) {
  .hamburger {
    display: none !important;
  }
  #menu {
    display: flex !important;
    position: static !important;
    background: none !important;
  }
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: 3rem 1.5rem;
  text-align: center;
}
.hero-content {
  max-width: 800px;
  margin: 0 auto;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* ===== FERRAMENTA QR CODE ===== */
.qrcode-section {
  padding: 4rem 0;
  background: var(--light);
}
.qrcode-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.qrcode-form {
  background: var(--white);
  padding: 2rem;
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.form-header {
  text-align: center;
  margin-bottom: 2rem;
}
.form-header i {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1rem;
}
.form-header h2 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.form-header p {
  color: var(--gray);
}
.input-group {
  margin-bottom: 1.5rem;
}
.input-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.input-group input, .input-group select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  font-family: inherit;
  transition: var(--transition);
}
.input-group input:focus, .input-group select:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(46,125,50,0.1);
  outline: none;
}
.input-group input[type="color"] {
  height: 50px;
  padding: 5px;
  cursor: pointer;
}
.color-hint {
  display: block;
  font-size: 0.7rem;
  color: var(--gray);
  margin-top: 4px;
}
.input-group small {
  display: block;
  font-size: 0.7rem;
  color: var(--gray);
  margin-top: 4px;
}
.button-group {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.5rem;
  border-radius: 40px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
}
.btn-primary {
  background: var(--secondary);
  color: white;
}
.btn-primary:hover {
  background: #1b5e20;
  transform: translateY(-2px);
}
.btn-secondary {
  background: var(--primary);
  color: white;
}
.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-secondary:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
}
.btn-outline {
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}
.btn-outline:disabled {
  border-color: #ccc;
  color: #ccc;
  cursor: not-allowed;
  transform: none;
}

/* Preview */
.qrcode-preview {
  background: var(--white);
  border-radius: 24px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.preview-card {
  padding: 2rem;
  text-align: center;
}
.preview-card h3 {
  color: var(--primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.qrcode-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
  background: var(--light);
  border-radius: 16px;
  margin-bottom: 1.5rem;
}
.qrcode-container canvas {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.qrcode-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Info section */
.info-section {
  margin-top: 2rem;
}
.info-section h3 {
  text-align: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.tip-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  transition: var(--transition);
}
.tip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.tip-card i {
  font-size: 2rem;
  color: var(--secondary);
  margin-bottom: 1rem;
}
.tip-card h4 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.tip-card p {
  color: var(--gray);
  font-size: 0.9rem;
}

/* ===== FOOTER ===== */
footer {
  background: var(--primary);
  color: #ccc;
  padding: 60px 0 20px;
}
.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand img {
  width: 80px;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}
.footer-tagline {
  margin-bottom: 12px;
  color: var(--white);
}
.footer-column h3 {
  margin-bottom: 20px;
  font-size: 1.1rem;
  position: relative;
  display: inline-block;
  color: var(--white);
}
.footer-column h3:after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--secondary);
}
.footer-list {
  list-style: none;
}
.footer-list li {
  margin-bottom: 12px;
}
.footer-link {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.footer-link:hover {
  color: var(--secondary-light);
  transform: translateX(5px);
}
.social-icons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  color: var(--white);
  transition: var(--transition);
}
.social-link:hover {
  background: var(--secondary);
  transform: translateY(-3px);
}
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px 0;
}
.copyright {
  color: rgba(255,255,255,0.7);
}

/* Responsividade */
@media (max-width: 992px) {
  .qrcode-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  .button-group { flex-direction: column; }
  .button-group .btn { width: 100%; justify-content: center; }
  .footer-container { grid-template-columns: 1fr; text-align: center; }
  .footer-column h3:after { left: 50%; transform: translateX(-50%); }
  .social-icons { justify-content: center; }
  .tips-grid { grid-template-columns: 1fr; }
}