* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #111;
  color: #fff;
  margin: 0;
  padding: 0;
}

.open-btn {
  display: inline-block;
  background-color: #1a1a1a00;
  color: #111;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  margin: 30px;
  transition: background 0.3s;
}

.open-btn:hover {
  background-color: #00cc88;
}

.popup-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.popup-content {
  background-color: #1a1a1a00;
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  padding: 30px;
  position: relative;
  animation: popup 0.4s ease;
}

@keyframes popup {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: transparent;
  border: none;
  font-size: 22px;
  color: #fff;
  cursor: pointer;
}

h2 {
  margin-top: 0;
  color: #00ffab;
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
}

input, select, textarea {
  margin: 10px 0;
  padding: 12px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  background-color: rgba(4, 120, 87, var(--tw-bg-opacity));
  color: #fff;
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid #00ffab;
}

button[type="submit"] {
  background-color: #00ffab;
  color: #111;
  font-weight: bold;
  padding: 12px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s;
  margin-top: 10px;
}

button[type="submit"]:hover {
  background-color: #00cc88;
}

.footer-note {
  margin-top: 20px;
  font-size: 14px;
  color: #010e0d;
  text-align: center;
}

@media (max-width: 500px) {
  .popup-content {
    padding: 20px;
  }
}