* {
  font-family: 'Poppins', sans-serif;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #0f172a, #1e3a8a);
  color: white;
  overflow: hidden;
}

#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  padding: 30px;
  border-radius: 16px;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 0 25px rgba(0,0,0,0.3);
  animation: fadeIn 1.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

h2 {
  margin-top: 0;
  text-align: center;
  font-weight: 600;
}

.icon-header {
  text-align: center;
  font-size: 40px;
  margin-bottom: 10px;
}

input, textarea, button {
  width: 100%;
  margin-top: 12px;
  padding: 12px;
  border-radius: 10px;
  border: none;
  font-size: 16px;
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
}

textarea {
  resize: vertical;
}

button {
  background-color: #2563eb;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background-color: #1d4ed8;
}

.footer-note {
  margin-top: 20px;
  text-align: center;
  font-size: 12px;
  opacity: 0.7;
}