.alert.alert-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-align: center;
}
.alert.alert-error i {
  font-size: 1.5em;
  color: var(--danger-color);
}

.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
}

.auth-form {
  max-width: 450px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-10);
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.auth-form::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--accent-color),
    var(--info-color),
    var(--success-color)
  );
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.auth-form h1 {
  text-align: center;
  margin-bottom: var(--space-8);
  color: var(--primary-color);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.auth-form h1::after {
  content: "";
  position: absolute;
  bottom: -var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color), var(--info-color));
  border-radius: var(--radius-full);
}

.form-group {
  margin-bottom: var(--space-6);
}

.auth-form label {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.auth-form input[type="text"],
.auth-form input[type="password"],
.auth-form input[type="email"],
.auth-form input[type="number"],
.auth-form textarea,
.auth-form select {
  width: 100%;
  padding: var(--space-4);
  margin-bottom: var(--space-2);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  background: var(--bg-input);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.auth-form input[type="text"]:focus,
.auth-form input[type="password"]:focus,
.auth-form input[type="email"]:focus,
.auth-form input[type="number"]:focus,
.auth-form textarea:focus,
.auth-form select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  outline: none;
  transform: translateY(-1px);
}

.auth-form input[type="text"]:invalid,
.auth-form input[type="password"]:invalid,
.auth-form input[type="email"]:invalid {
  border-color: var(--border-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.auth-form button[type="submit"] {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(135deg, var(--accent-color), var(--info-color));
  color: var(--text-white);
  border: none;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  overflow: hidden;
}

.auth-form button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.auth-form button[type="submit"]:active {
  transform: translateY(0);
}

.auth-form button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.auth-form p {
  text-align: center;
  margin-top: var(--space-6);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.auth-form p a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.auth-form p a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.auth-form .error,
.auth-form .success {
  text-align: center;
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.auth-form .error {
  background: linear-gradient(
    135deg,
    var(--danger-light),
    rgba(239, 68, 68, 0.1)
  );
  color: var(--danger-hover);
  border: 2px solid var(--danger-color);
}

.auth-form .error::before {
  content: "⚠️";
  font-size: var(--font-size-base);
}

.auth-form .success {
  background: linear-gradient(
    135deg,
    var(--success-light),
    rgba(16, 185, 129, 0.1)
  );
  color: var(--success-hover);
  border: 2px solid var(--success-color);
}

.auth-form .success::before {
  content: "✅";
  font-size: var(--font-size-base);
}

/* Input Icons */
.input-group {
  position: relative;
  margin-bottom: var(--space-6);
}

.input-group i {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: var(--font-size-base);
  z-index: 1;
}

.input-group input {
  padding-left: var(--space-12);
}

.input-group input:focus + i {
  color: var(--accent-color);
}

/* Alternative Layout */
.auth-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* Form Validation Styles */
.form-error {
  color: var(--danger-color);
  font-size: var(--font-size-xs);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.form-error::before {
  content: "⚠️";
  font-size: var(--font-size-xs);
}

.form-success {
  color: var(--success-color);
  font-size: var(--font-size-xs);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.form-success::before {
  content: "✅";
  font-size: var(--font-size-xs);
}

/* Loading States */
.btn-loading {
  position: relative;
  color: transparent;
}

.btn-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* Social Auth Buttons */
.social-auth {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
}

.social-auth p {
  margin-bottom: var(--space-4);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.social-buttons {
  display: flex;
  gap: var(--space-3);
}

.btn-social {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-white);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-social:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .auth-form {
    margin: var(--space-4);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
  }

  .auth-form h1 {
    font-size: var(--font-size-2xl);
  }

  .auth-split {
    grid-template-columns: 1fr;
  }

  .social-buttons {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .auth-form {
    margin: var(--space-2);
    padding: var(--space-4);
  }

  .auth-form h1 {
    font-size: var(--font-size-xl);
  }

  .auth-form input,
  .auth-form button {
    padding: var(--space-3);
  }
}