/* ==============================================
   Authentication Pages (Login & Register)
   ============================================== */

/**
 * Auth page layout uses a centered card design
 * with clean, minimal styling
 */

/* Auth Page Content (rendered inside main layout without sidebar) */
.auth-page-content {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 40px 16px;
}

/* Auth Card */
.auth-card {
  background: var(--color-background);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-xxl);
}

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

.auth-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin: 0 0 var(--spacing-sm) 0;
  line-height: var(--line-height-tight);
}

.auth-subtitle {
  font-size: var(--font-size-body);
  color: var(--color-text-muted);
  margin: 0;
}

/* Auth Form */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Form Groups */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
}

/* Form Inputs */
.form-input {
  padding: var(--spacing-md) var(--spacing-md);
  border: 1px solid var(--color-border-gray);
  border-radius: var(--radius-button);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  color: var(--color-text-dark);
  background: var(--color-background);
  transition: border-color var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-dark);
  box-shadow: 0 0 0 2px rgba(14, 58, 58, 0.1);
}

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

.form-input:disabled {
  background: var(--color-background-secondary);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

/* Form Help Text */
.form-help {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
}

/* Checkbox Styling */
.form-checkbox {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-checkbox-input {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--color-primary-dark);
}

.form-checkbox-input:focus {
  outline: var(--focus-ring);
}

.form-checkbox-label {
  font-size: var(--font-size-body);
  color: var(--color-text-dark);
  cursor: pointer;
  user-select: none;
}

/* Error Display */
.form-errors {
  background: var(--color-alert-error-bg);
  border: 1px solid var(--color-alert-error-bg);
  border-radius: var(--radius-button);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.error-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  color: var(--color-error);
}

.error-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.error-title {
  font-weight: var(--font-weight-semibold);
}

.error-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.error-list li {
  font-size: var(--font-size-body);
  color: var(--color-error);
  margin: var(--spacing-sm) 0 0 0;
  padding-left: var(--spacing-md);
  position: relative;
}

.error-list li:before {
  content: '•';
  position: absolute;
  left: 0;
}

.form-error {
  font-size: var(--font-size-small);
  color: var(--color-error);
  display: none;
  margin-top: -8px;
}

.form-input:invalid:not(:placeholder-shown) ~ .form-error,
.form-input[aria-invalid="true"] ~ .form-error {
  display: block;
}

/* Flash Messages */
.flash {
  padding: var(--spacing-lg);
  border-radius: var(--radius-button);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-body);
}

.flash-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.flash-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.flash-success {
  background: var(--color-alert-success-bg);
  border: 1px solid var(--color-alert-success-bg);
  color: var(--color-success);
}

.flash-error {
  background: var(--color-alert-error-bg);
  border: 1px solid var(--color-alert-error-bg);
  color: var(--color-error);
}

/* Button Styling */
.btn {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-button);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.btn:focus {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
  background: var(--color-primary-dark);
  color: var(--color-primary-light);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-btn-primary-hover);
}

.btn-primary:active:not(:disabled) {
  background: var(--color-btn-primary-active);
}

/* Block Button (Full Width) */
.btn-block {
  width: 100%;
}

/* Auth Footer */
.auth-footer {
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-gray);
}

.auth-link-text {
  font-size: var(--font-size-body);
  color: var(--color-text-dark);
  margin: 0;
}

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

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

.auth-link:focus {
  outline: var(--focus-ring);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Honeypot Fields (hidden from real users) */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
  z-index: -1;
}

/* Responsive Design */
@media (max-width: 640px) {
  .auth-page-content {
    padding: 24px 16px;
  }

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

  .auth-title {
    font-size: var(--font-size-h3);
  }

  .auth-form {
    gap: var(--spacing-md);
  }
}

/* Accessibility: High Contrast Mode */
@media (prefers-contrast: more) {
  .form-input:focus {
    box-shadow: 0 0 0 3px rgba(14, 58, 58, 0.3);
  }

  .btn-primary:hover:not(:disabled) {
    background: var(--color-btn-primary-active);
  }

  .auth-card {
    border: 1px solid var(--color-text-dark);
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .form-input,
  .btn,
  .auth-link {
    transition: none;
  }
}