* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.hero {
  position: relative;
  min-height: 100vh;
  width: 100vw;
  overflow: auto;
}

.hero iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  filter: blur(4px) brightness(0.8);
  z-index: 0;
}

.hero .overlay {
  position: relative;
  z-index: 1;
  height: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #f1f5f9;
  text-align: center;
  background: rgba(15, 23, 42, 0.4);
  padding: 20px;
}

.overlay h1 {
  font-size: 48px;
  margin-bottom: 10px;
}
.overlay p {
  font-size: 20px;
  margin-bottom: 30px;
  color: #cbd5e1;
}

.overlay a.launch-btn {
  padding: 15px 30px;
  font-size: 18px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(90deg, #4f46e5, #3b82f6);
  color: white;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.7);
  transition: background 0.3s, transform 0.3s;
  margin-bottom: 30px;
}

.overlay a.launch-btn:hover {
  background: linear-gradient(90deg, #4338ca, #2563eb);
  transform: scale(1.05);
}

.login-card,
.signup-card {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(10px);
  padding: 25px;
  border-radius: 12px;
  max-width: 350px;
  width: 100%;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  display: none;
}

.login-card.active,
.signup-card.active {
  display: block;
}

.login-card h3,
.signup-card h3 {
  margin-bottom: 20px;
  font-size: 22px;
  text-align: center;
}
.login-card input,
.signup-card input {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  border: none;
  border-radius: 6px;
  background: #0f172a;
  color: #f1f5f9;
}
.login-card button,
.signup-card button {
  width: 100%;
  padding: 12px;
  background: #3b82f6;
  border: none;
  color: white;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}
.login-card button:hover,
.signup-card button:hover {
  background: #2563eb;
}
.login-card .signup,
.signup-card .signup {
  text-align: center;
  margin-top: 10px;
  font-size: 14px;
}
.login-card .signup a,
.signup-card .signup a {
  color: #60a5fa;
  text-decoration: none;
}
.login-card .signup a:hover,
.signup-card .signup a:hover {
  text-decoration: underline;
}

button.clicked {
  transform: scale(0.97);
  background: #1d4ed8 !important;
  transition: transform 0.1s ease, background 0.1s ease;
}

.feedback-trigger p,
.credits p {
  margin-bottom: 0;
  font-size: small;
}

.footer {
  margin-top: 2%;
}

.overlay {
  margin-top: 2%;
}

@media (max-width: 768px) {
  .overlay h1 {
    font-size: 32px;
  }

  .overlay p {
    font-size: 16px;
  }

  .overlay a.launch-btn {
    padding: 12px 24px;
    font-size: 16px;
    margin-bottom: 20px;
  }

  .login-card,
  .signup-card {
    padding: 20px;
    max-width: 90%;
  }

  .login-card h3,
  .signup-card h3 {
    font-size: 20px;
  }

  .login-card input,
  .signup-card input,
  .login-card button,
  .signup-card button {
    padding: 10px;
    font-size: 14px;
  }

  .login-card .signup,
  .signup-card .signup {
    font-size: 13px;
  }

  .footer {
    margin-top: 5%;
    padding: 10px;
    text-align: center;
  }

  .feedback-trigger p,
  .feedback-trigger a,
  .credits p,
  .social a {
    font-size: 13px;
  }

  .social {
    flex-direction: column;
    gap: 5px;
  }
}