:root {
  --primary-color: #00ff88;
  --accent-color: #ff9900;
  --bg-gradient: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  --card-bg: rgba(255, 255, 255, 0.07);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg-gradient);
  color: #fff;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overflow: hidden;
}

.secure-card {
  background: var(--card-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 40px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  max-width: 420px;
  width: 90%;
  text-align: center;
  animation: fadeIn 0.8s ease-out;
}

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

h1 {
  font-size: 2.2rem;
  margin: 0 0 10px;
  color: var(--primary-color);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  text-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
  font-weight: 700;
}

p {
  font-size: 1.05rem;
  color: #ccc;
  line-height: 1.6;
  margin: 0 0 35px;
}

.action-btn {
  background: var(--accent-color);
  color: #000;
  padding: 18px 0;
  font-size: 1.25rem;
  font-weight: 700;
  border: none;
  border-radius: 12px;
  width: 100%;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 0 10px 20px rgba(255, 153, 0, 0.2);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.action-btn:hover {
  background: #ffcc00;
  transform: translateY(-3px);
  box-shadow: 0 15px 25px rgba(255, 153, 0, 0.4);
}

.action-btn:active { transform: translateY(-1px); }

.footer-links { margin-top: 30px; }

.privacy-link {
  color: #888;
  font-size: 0.85rem;
  text-decoration: underline;
  cursor: pointer;
  transition: color 0.3s;
}

.privacy-link:hover { color: #fff; }

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.modal-content {
  background: #1a1a2e;
  padding: 30px;
  border-radius: 15px;
  max-width: 450px;
  width: 85%;
  position: relative;
  border: 1px solid var(--primary-color);
  text-align: left;
}

.modal-content h2 {
  color: var(--accent-color);
  margin-top: 0;
  font-size: 1.5rem;
}

.modal-content p {
  color: #ddd;
  font-size: 0.95rem;
  margin-bottom: 15px;
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 1.8rem;
  color: #ff4444;
  cursor: pointer;
  font-weight: bold;
  line-height: 1;
}

@media (max-width: 480px) {
  .secure-card { padding: 28px 22px; }
  h1 { font-size: 1.85rem; }
  p { font-size: 0.98rem; margin-bottom: 28px; }
  .action-btn { font-size: 1.1rem; padding: 16px 0; }
}