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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, 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: 400px;
  margin: 0 auto;
}

.auth-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  animation: slideUp 0.5s ease-out;
}

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

.auth-header {
  background: #A11F2B;
  color: white;
  padding: 30px 20px;
  text-align: center;
}

.logo h1 {
  font-size: 2rem;
  margin-bottom: 5px;
  font-weight: 700;
}

.logo p {
  font-size: 0.9rem;
  opacity: 0.9;
  font-weight: 300;
}

.auth-form {
  padding: 40px 30px;
}

.auth-form h2 {
  color: #2c3e50;
  margin-bottom: 8px;
  font-size: 1.8rem;
  font-weight: 600;
}

.auth-subtitle {
  color: #7f8c8d;
  margin-bottom: 30px;
  font-size: 0.95rem;
  line-height: 1.4;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: #2c3e50;
  font-weight: 500;
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid #ecf0f1;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #fafafa;
}

.form-group input:focus {
  outline: none;
  border-color: #A11F2B;
  background: white;
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  flex-wrap: wrap;
  gap: 10px;
}

.checkbox-container {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 0.9rem;
  color: #2c3e50;
}

.checkbox-container input {
  margin-right: 8px;
  width: auto;
}

.forgot-link {
  color: #A11F2B;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.forgot-link:hover {
  color: #c0392b;
}

.auth-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-btn.primary {
  background: #A11F2B;
  color: white;
}

.auth-btn.primary:hover {
  background: #c0392b;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(231, 76, 60, 0.3);
}

.auth-btn:disabled {
  background: #bdc3c7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.auth-links {
  margin-top: 25px;
  text-align: center;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
}

.back-link,
.resend-link {
  color: #7f8c8d;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.back-link:hover,
.resend-link:hover {
  color: #A11F2B;
}

.auth-message {
  margin-top: 20px;
  padding: 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  text-align: center;
  display: none;
}

.auth-message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.auth-message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.auth-message.info {
  background: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* Loading state */
.loading {
  position: relative;
  color: transparent;
}

.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 480px) {
  .auth-container {
    padding: 10px;
  }

  .auth-form {
    padding: 30px 20px;
  }

  .auth-header {
    padding: 25px 20px;
  }

  .logo h1 {
    font-size: 1.6rem;
  }

  .auth-form h2 {
    font-size: 1.5rem;
  }

  .form-options {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .auth-links {
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 320px) {
  .auth-form {
    padding: 25px 15px;
  }

  .form-group input {
    padding: 10px 12px;
  }

  .auth-btn {
    padding: 12px;
  }
}