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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #6b73ff 0%, #0009cc 50%, #000dff 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  color: #333;
}

form {
  background: #fff;
  padding: 2.5rem 3rem;
  border-radius: 12px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  transition: box-shadow 0.3s ease;
}

form:hover {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-weight: 700;
  color: #222;
  letter-spacing: 1px;
}

label {
  display: block;
  margin-top: 1.25rem;
  font-weight: 900;
  color: #444;
  font-size: 1rem;
}

input[type="text"],
input[type="email"],
input[type="file"],
input[type="tel"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  margin-top: 0.5rem;
  border-radius: 6px;
  border: 1.5px solid #ccc;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="file"]:focus,
input[type="tel"]:focus {
  outline: none;
  border-color: #000dff;
  box-shadow: 0 0 6px rgba(0, 13, 255, 0.4);
}

button {
  width: 100%;
  padding: 0.75rem;
  margin-top: 2rem;
  border-radius: 8px;
  border: none;
  background: #000dff;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 13, 255, 0.4);
}

button:hover {
  background: #6b73ff;
  box-shadow: 0 6px 16px rgba(107, 115, 255, 0.6);
}

button:active {
  background: #0009cc;
  box-shadow: 0 2px 8px rgba(0, 9, 204, 0.8);
}

#whatsappBtn {
  background: rgb(6, 240, 6);
  margin-top: 1rem;
  box-shadow: 0 4px 12px rgba(3, 246, 92, 0.5);
}

#whatsappBtn:hover {
  background: #1ebe57;
  box-shadow: 0 6px 16px rgba(30, 190, 87, 0.7);
}

.message {
  margin-top: 1.5rem;
  font-weight: 700;
  color: #000dff;
  text-align: center;
  font-size: 1rem;
  min-height: 1.2em;
}

/* Responsive */
@media (max-width: 480px) {
  form {
    padding: 2rem 1.5rem;
  }
}