* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-size: 14px;
}

body {
  background: linear-gradient(135deg, #eef2ff 0%, #faf5ff 50%, #f0fdf4 100%);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #333;
}

.hidden-description {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

input:focus {
  outline: none;
}

.notification-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  z-index: 1000;
  pointer-events: none;
}

.notification {
  background: white;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  max-width: 500px;
  width: 90%;
  margin-top: 20px;
  transform: translateY(-100px);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
  pointer-events: auto;
}

.notification.show {
  transform: translateY(20px);
  opacity: 1;
}

.notification-icon {
  font-size: 24px;
  margin-right: 15px;
}

.notification-content {
  flex-grow: 1;
}

.notification-title {
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.notification-message {
  font-size: 16px;
  color: #666;
}

.notification-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: #999;
  margin-left: 15px;
  padding: 5px;
}

.notification-close:hover {
  color: #333;
}

.notification-success {
  border-left: 4px solid #4caf50;
}

.notification-error {
  border-left: 4px solid #f44336;
}

.notification-info {
  border-left: 4px solid #2196f3;
}

.notification-success .notification-icon {
  color: #4caf50;
}

.notification-error .notification-icon {
  color: #f44336;
}

.notification-info .notification-icon {
  color: #2196f3;
}

@media (max-width: 600px) {
  .container {
    padding: 25px;
  }

  .demo-section {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
  }
}