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

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

.auth-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
}

/* Auth Header */
.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.brand-logo {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Auth Form */
.auth-form {
  width: 100%;
}

.form-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

/* Form Group */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.form-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  background: var(--color-bg-elevated);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Password Input Wrapper */
.password-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrapper .form-input {
  padding-right: 3rem;
}

.toggle-password {
  position: absolute;
  right: var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  font-size: var(--font-size-lg);
  transition: color var(--transition-base);
}

.toggle-password:hover {
  color: var(--color-text-primary);
}

.eye-icon {
  display: block;
  line-height: 1;
}

/* Form Hint */
.form-hint {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-xs);
}

/* Form Error */
.form-error {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
  min-height: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-block {
  width: 100%;
  margin-top: var(--spacing-lg);
}

/* Alert */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-lg);
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

/* Auth Footer */
.auth-footer {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-lg);
}

.auth-link {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: color var(--transition-base);
}

.auth-link:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.auth-link-secondary {
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-normal);
  text-decoration: none;
  transition: color var(--transition-base);
}

.auth-link-secondary:hover {
  color: var(--color-text-secondary);
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 640px) {
  .auth-page {
    padding: var(--spacing-md);
  }

  .auth-card {
    padding: var(--spacing-xl);
  }

  .brand-logo {
    font-size: var(--font-size-3xl);
  }

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

/* Loading State */
.btn-primary:disabled {
  position: relative;
}

.btn-primary:disabled::after {
  content: '';
  position: absolute;
  right: var(--spacing-lg);
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Focus Visible for Accessibility */
.form-input:focus-visible,
.btn:focus-visible,
.toggle-password:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}