* {
  box-sizing: border-box;
}

body { 
  font-family: Inter, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
  max-width: 800px; 
  margin: 50px auto; 
  padding: 20px; 
  text-align: center;
  background-image: url(https://wallpaperaccess.com/full/2746064.jpg);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  min-height: 100vh;
  color: #333;
}

.container { 
  background: rgba(255, 255, 255, 0.95); 
  padding: 40px; 
  border-radius: 20px; 
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
}

h1 {
  color: #00314d;
  margin-bottom: 20px;
  font-weight: 300;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
}

#auth-section, .button-group {
  margin: 30px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.btn, button.btn { 
  display: inline-block;
  padding: 8px 24px; 
  background: #00314d;
  color: white; 
  text-decoration: none; 
  border-radius: 8px; 
  margin: 0;
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  font-family: inherit;
  flex: 0 1 auto;
  min-width: 140px;
}

.btn:hover, button.btn:hover { 
  background: #052f4a;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-success, button.btn-success {
  background: #0d542b;
}

.btn-success:hover, button.btn-success:hover {
  background: #032e15;
}

.btn-danger, button.btn-danger {
  background: #9f0712;
}

.btn-danger:hover, button.btn-danger:hover {
  background: #82181a;
}

.user-info { 
  text-align: center;
  background-color: #e1e2e7;
  border: 1px solid #c3e6cb;
  color: #0d542b;
  padding: 25px; 
  border-radius: 15px; 
  margin: 25px 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.user-info img {
  max-width: 80px;
  height: auto;
}

.success { 
  background-color: #d1ecf1;
  border: 1px solid #b8daff;
  color: #0c5460; 
  padding: 15px; 
  border-radius: 10px; 
  margin: 15px 0;
  font-weight: 500;
}

/* Responsive Design */
/* Tablet and smaller screens */
@media screen and (max-width: 768px) {
  body {
    margin: 20px auto;
    padding: 15px;
  }
  
  .container {
    padding: 30px 20px;
    border-radius: 15px;
  }
  
  h1 {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 15px;
  }
  
  .btn, button.btn {
    padding: 8px 20px;
    font-size: 15px;
    min-width: 120px;
  }
  
  .user-info, .success {
    padding: 20px;
    margin: 20px 0;
  }
}

/* Mobile phones */
@media screen and (max-width: 480px) {
  body {
    margin: 10px auto;
    padding: 10px;
    background-attachment: scroll;
  }
  
  .container {
    padding: 20px 15px;
    border-radius: 12px;
  }
  
  h1 {
    font-size: clamp(1.25rem, 7vw, 1.75rem);
    margin-bottom: 12px;
  }
  
  p {
    font-size: 0.95rem;
  }
  
  #auth-section, .button-group {
    margin: 20px 0;
    gap: 8px;
  }
  
  .btn, button.btn {
    padding: 8px 16px;
    font-size: 14px;
    min-width: 100px;
    width: 100%;
    max-width: 280px;
  }
  
  .user-info, .success {
    padding: 15px;
    margin: 15px 0;
    font-size: 0.9rem;
  }
  
  .user-info img {
    max-width: 60px;
  }
}

/* Very small screens */
@media screen and (max-width: 360px) {
  .container {
    padding: 15px 10px;
  }
  
  h1 {
    font-size: 1.25rem;
  }
  
  .btn, button.btn {
    font-size: 13px;
    padding: 6px 12px;
  }
}