/**
 * Authentication Pages Styles (Login, Register)
 * Uses design system tokens from variables.css
 * Follows patterns from landing.css and error.css
 */

/* ============================================================
   AUTH PAGE CONTAINER
   ============================================================ */

/* Auth page centering and animation (container sizing from .page-container--narrow) */
.auth-page {
  text-align: center;
  animation: authFadeIn var(--duration-slow) var(--ease-out);
}

/* ============================================================
   TRUST BADGE
   ============================================================ */

.auth-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-5);
}

/* ============================================================
   ILLUSTRATION
   ============================================================ */

.auth-illustration {
  width: 120px;
  height: 100px;
  margin: 0 auto var(--space-6);
  color: var(--color-border-medium);
}

.auth-illustration svg {
  width: 100%;
  height: 100%;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

.auth-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
  line-height: var(--leading-tight);
}

.auth-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  margin: 0 0 var(--space-6) 0;
  line-height: var(--leading-relaxed);
}

/* ============================================================
   ERROR MESSAGES
   ============================================================ */

.auth-error {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-error-50);
  border: 1px solid var(--color-error-100);
  border-left: 4px solid var(--color-error-500);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  text-align: left;
  color: var(--color-error-600);
  font-size: var(--text-sm);
}

.auth-error-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-error-500);
}

/* Multiple validation errors */
.auth-errors {
  padding: var(--space-4);
  background: var(--color-error-50);
  border: 1px solid var(--color-error-100);
  border-left: 4px solid var(--color-error-500);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  text-align: left;
}

.auth-errors-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-error-600);
  margin-bottom: var(--space-2);
}

.auth-errors-list {
  margin: 0;
  padding-left: var(--space-5);
  color: var(--color-error-600);
  font-size: var(--text-sm);
}

.auth-errors-list li {
  margin-bottom: var(--space-1);
}

.auth-errors-list li:last-child {
  margin-bottom: 0;
}

/* ============================================================
   FORM CONTAINER
   ============================================================ */

.auth-form {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-width: 360px;
  box-shadow: var(--shadow-sm), var(--shadow-primary-sm);
  text-align: left;
  margin-bottom: var(--space-5);
  transition: box-shadow var(--duration-moderate) var(--ease-out),
              border-color var(--duration-moderate) var(--ease-out);
  animation: authFadeIn var(--duration-slow) var(--ease-out);
  animation-delay: 100ms;
  animation-fill-mode: both;
}

.auth-form:focus-within {
  box-shadow: var(--shadow-md), var(--shadow-primary-md);
  border-color: var(--color-primary-100);
}

/* ============================================================
   FORM GROUPS
   ============================================================ */

.auth-form-group {
  margin-bottom: var(--space-5);
}

.auth-form-group:last-of-type {
  margin-bottom: var(--space-6);
}

.auth-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

/* ============================================================
   INPUT FIELDS
   ============================================================ */

.auth-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  transition: all var(--duration-moderate) var(--ease-out);
  box-sizing: border-box;
}

.auth-input::placeholder {
  color: var(--color-text-disabled);
}

/* Hover state */
.auth-input:hover:not(:focus):not(:disabled) {
  border-color: var(--color-border-medium);
  background: var(--color-bg-secondary);
}

/* Focus state */
.auth-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  background: var(--color-bg-primary);
  box-shadow: var(--shadow-focus);
}

/* Error state */
.auth-input.has-error {
  border-color: var(--color-error-500);
  background: rgba(239, 68, 68, 0.02);
}

.auth-input.has-error:focus {
  box-shadow: var(--shadow-focus-error);
}

/* ============================================================
   FIELD HINTS
   ============================================================ */

.auth-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-2);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   CHECKBOX GROUPS
   ============================================================ */

.auth-form-group--checkbox {
  margin-top: var(--space-2);
}

.auth-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.auth-checkbox-label input[type="checkbox"] {
  margin-top: 0.2rem;
  flex-shrink: 0;
}

/* ============================================================
   ALTERNATE ACTION LINK
   ============================================================ */

.auth-alternate {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.auth-link {
  color: var(--color-primary-600);
  text-decoration: none;
  font-weight: var(--font-medium);
  margin-left: var(--space-1);
  transition: color var(--duration-fast) var(--ease-out);
}

.auth-link:hover {
  color: var(--color-primary-700);
  text-decoration: underline;
}

.auth-link:focus-visible {
  outline: none;
  text-decoration: underline;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

@keyframes authFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */

@media (max-width: 480px) {
  .auth-illustration {
    width: 100px;
    height: 84px;
  }

  .auth-title {
    font-size: 1.5rem;
  }

  .auth-form {
    padding: var(--space-4);
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .auth-page,
  .auth-form {
    animation: none;
  }

  .auth-input,
  .auth-link,
  .btn-primary.btn-large {
    transition: none;
  }
}

/* ============================================================
   AUTH SUBMIT CENTERING
   ============================================================ */

.auth-page .auth-submit {
  display: flex;
  width: fit-content;
  margin: 0 auto;
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
  .auth-page {
    padding: var(--space-4);
  }

  .auth-form {
    box-shadow: none;
    border: 1px solid #ddd;
  }

  .auth-illustration,
  .auth-badge,
  .auth-submit {
    display: none;
  }
}