* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-container {
  width: 100%;
  max-width: 450px;
}

.auth-box {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.auth-box h1 {
  text-align: center;
  color: #667eea;
  margin-bottom: 30px;
  font-size: 2rem;
}

.tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
}

.tab {
  flex: 1;
  padding: 12px;
  border: none;
  background: #f5f5f5;
  color: #666;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.3s;
}

.tab.active {
  background: #667eea;
  color: white;
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.auth-form h2 {
  margin-bottom: 20px;
  color: #333;
  font-size: 1.5rem;
}

.form-group {
  margin-bottom: 20px;
}

.form-group input {
  width: 100%;
  padding: 14px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
}

.btn-primary:hover {
  background: #5568d3;
}

.btn-secondary {
  display: block;
  width: 100%;
  padding: 14px;
  background: white;
  color: #667eea;
  border: 2px solid #667eea;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-secondary:hover {
  background: #f5f5f5;
}

.message {
  margin-top: 15px;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  display: none;
}

.message.success {
  background: #d4edda;
  color: #155724;
  display: block;
}

.message.error {
  background: #f8d7da;
  color: #721c24;
  display: block;
}

.guest-access {
  margin-top: 30px;
  text-align: center;
}

.guest-access p {
  color: #999;
  margin-bottom: 15px;
}

@media (max-width: 480px) {
  .auth-box {
    padding: 30px 20px;
  }

  .auth-box h1 {
    font-size: 1.5rem;
  }
}

/* Form Row for Side-by-Side Fields */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.forgot-password-link {
  text-align: right;
  margin-top: -10px;
  margin-bottom: 15px;
}

.forgot-password-link a {
  color: #667eea;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.forgot-password-link a:hover {
  color: #5568d3;
  text-decoration: underline;
}

.auth-card {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  max-width: 450px;
  width: 100%;
}

.auth-card h1 {
  text-align: center;
  color: #667eea;
  margin-bottom: 10px;
  font-size: 2rem;
}

.auth-subtitle {
  text-align: center;
  color: #666;
  margin-bottom: 30px;
}

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

.auth-footer a {
  color: #667eea;
  text-decoration: none;
  font-size: 0.9rem;
}

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