:root {
  --primary: #009688;
  --secondary: #4CAF50;
  --dark: #333;
  --light: #f9f9f9;
  --error: #e53935;
  --white: #ffffff;
}

body {
  margin: 0;
  padding: 0;
  background: linear-gradient(to right, #e0f2f1, #ffffff);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.auth-container {
  max-width: 500px;
  margin: 100px auto;
  background: var(--white);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  animation: slideFadeIn 0.7s ease;
}

.auth-container h1 {
  margin-bottom: 20px;
  font-size: 28px;
  color: var(--primary);
  text-align: center;
}

.auth-container input {
  width: 100%;
  padding: 12px;
  margin: 10px 0 20px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

.auth-container button {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 25px;
  font-size: 18px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.auth-container button:hover {
  background: var(--secondary);
}

.auth-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
}

.auth-footer a {
  color: var(--primary);
  text-decoration: none;
}

.auth-footer a:hover {
  text-decoration: underline;
}

.auth-error {
  color: var(--error);
  margin-bottom: 20px;
  font-weight: bold;
}

@keyframes slideFadeIn {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}