:root {
    --primary-color: #00B894;
    --secondary-color: #2d3436;
    --bg-color: #f8f9fa;
    --text-color: #2d3436;
    --border-radius: 8px;
    --font-stack: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-stack);
    margin: 0;
    padding: 0;
}

h1 {
    color: var(--primary-color);
    text-align: center;
    margin-top: 30px;
}

p {
    text-align: center;
    font-size: 1.1em;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 30px auto;
    width: 90%;
    max-width: 500px;
    background: #fff;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

input[type="text"] {
    width: 100%;
    padding: 10px;
    font-size: 1em;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    font-size: 1em;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: background 0.3s ease;
}

button:hover {
    background-color: #019875;
}

img {
    display: block;
    margin: 20px auto;
    max-width: 300px;
}

footer {
    text-align: center;
    font-size: 0.9em;
    color: #888;
    margin-top: 40px;
    margin-bottom: 20px;
}

footer a {
    color: #019875; /* Verde vibrante (igual ao usado nos botões/títulos) */
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
  }
footer a:hover {
    color: #00B4D8; /* tom vibrante de azul/turquesa, combina com tech */
    text-decoration: underline;
  }

h2 {
    color: #019875 !important;
    font-weight: 600;
    text-align: center;
  }
  /* Responsivo para telas pequenas */
@media (max-width: 600px) {
    body {
      padding: 10px;
    }
  
    header img {
      height: 60px;
    }
  
    form {
      flex-direction: column;
      align-items: stretch;
    }
  
    input[type="text"] {
      width: 100%;
      margin-bottom: 10px;
    }
  
    button {
      width: 100%;
    }
  
    img[alt="QR Code gerado"] {
      width: 90% !important;
      height: auto !important;
      display: block;
      margin: 0 auto;
    }
  }