/**
 * auth-pages.css — Login & Register pages
 * Clean, minimal, centered. Enterprise Store design system.
 */

/* ── Page shell ── */
.auth-body {
  min-height: 100vh;
  background: linear-gradient(160deg, var(--color-bg-secondary) 0%, var(--color-primary-50) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5) var(--space-4);
}

.auth-page {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}

/* ── Logo ── */
.auth-page__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.auth-page__logo-name {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: var(--color-primary-700);
  letter-spacing: var(--tracking-tight);
  line-height: 1.1;
}

.auth-page__logo-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ── Card ── */
.auth-card {
  width: 100%;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8) var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.auth-card__heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-1);
}

.auth-card__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

.auth-card__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

/* ── Form ── */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.auth-form__label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

/* ── Input field — standard ── */
.auth-form__field {
  position: relative;
  display: flex;
  align-items: center;
  border: 1.5px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-primary);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.auth-form__field:focus-within {
  border-color: var(--color-primary-700);
  box-shadow: 0 0 0 3px rgba(30, 61, 143, 0.1);
}

.auth-form__field--error {
  border-color: var(--color-error-500);
}

.auth-form__field--error:focus-within {
  border-color: var(--color-error-500);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.auth-form__field--success {
  border-color: var(--color-success-500);
}

/* Phone prefix */
.auth-form__prefix {
  padding: var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  border-right: 1.5px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
  flex-shrink: 0;
  white-space: nowrap;
}

/* Input inside .auth-form__field */
.auth-form__input {
  flex: 1;
  height: 48px;
  padding: 0 var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  min-width: 0;
  width: 100%;
}

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

/* Password toggle button (show/hide) */
.auth-form__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: color 0.15s ease;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.auth-form__toggle:hover {
  color: var(--color-primary-700);
}

.auth-form__toggle svg {
  width: 18px;
  height: 18px;
  pointer-events: none;
}

/* Validation message */
.auth-form__error {
  font-size: var(--text-xs);
  color: var(--color-error-500);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: calc(-1 * var(--space-1));
}

/* The component's display:flex rule overrides the browser's [hidden] rule. */
.auth-form__error[hidden] {
  display: none;
}

/* Server errors are displayed as a page-level alert at the top center. */
#authServerMessage:not([hidden]) {
  position: fixed;
  top: var(--space-6);
  left: 50%;
  z-index: var(--z-toast);
  width: min(calc(100% - (2 * var(--space-4))), 420px);
  padding: var(--space-3) var(--space-4);
  margin: 0;
  border: 1px solid var(--color-error-500);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
  transform: translateX(-50%);
}

.auth-form__error svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

/* Submit button */
.auth-form__submit {
  width: 100%;
  justify-content: center;
  height: 50px;
  font-size: var(--text-base);
  margin-top: var(--space-2);
  border-radius: var(--radius-xl);
}

/* Footer link row */
.auth-card__footer {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border-light);
}

.auth-card__footer a {
  color: var(--color-primary-700);
  font-weight: var(--font-semibold);
  text-decoration: none;
  transition: color 0.15s ease;
}

.auth-card__footer a:hover {
  color: var(--color-primary-800);
  text-decoration: underline;
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .auth-body { padding: var(--space-4) var(--space-3); align-items: flex-start; padding-top: var(--space-8); }
  .auth-card { padding: var(--space-6) var(--space-5) var(--space-5); border-radius: var(--radius-xl); }
  .auth-card__title { font-size: var(--text-xl); }
  .auth-form__input { font-size: var(--text-sm); height: 44px; }
  .auth-form__submit { height: 46px; font-size: var(--text-sm); }
}

/* =============================================
   SPLIT LAYOUT — /auth page
============================================= */

.auth-body--split {
  padding: var(--space-8) var(--space-4);
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--color-bg-secondary) 0%, var(--color-primary-50) 100%);
  min-height: 100vh;
}

/* Centered container — max 960px, NOT full-screen */
.auth-split {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  width: 100%;
  max-width: 960px;
  border-radius: var(--radius-3xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--color-border-light);
  min-height: 600px;
}

/* ── Left branding panel ── */
.auth-split__brand {
  background: linear-gradient(160deg, var(--color-primary-900) 0%, var(--color-primary-700) 60%, var(--color-primary-600) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-10);
  position: relative;
  overflow: hidden;
}

/* Decorative radial */
.auth-split__brand::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  top: -100px; right: -100px;
  pointer-events: none;
}

.auth-split__brand-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
  max-width: 420px;
  position: relative;
  z-index: 1;
}

.auth-split__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.auth-split__brand-name {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: #fff;
  letter-spacing: var(--tracking-tight);
}

.auth-split__brand-tag {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
}

.auth-split__headline {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: var(--font-extrabold);
  color: #fff;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.auth-split__subline {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.7);
  line-height: var(--leading-relaxed);
  margin-top: var(--space-3);
}

.auth-split__perks {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.auth-split__perks li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.8);
}

.auth-split__perk-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent-500);
  box-shadow: 0 0 8px rgba(245,133,0,0.6);
  flex-shrink: 0;
}

/* ── Right form side ── */
.auth-split__form-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-10) var(--space-8);
  background-color: var(--color-bg-secondary);
  overflow-y: auto;
}

/* ── Back to home link — top of form side ── */
.auth-back-home {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: var(--space-4);
  align-self: flex-start;
  padding: var(--space-1) 0;
  transition: color 0.15s ease;
}

.auth-back-home svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.auth-back-home:hover {
  color: var(--color-primary-700);
}

.auth-back-home:hover svg {
  transform: translateX(-3px);
}

/* Mobile logo — only on small screens */
.auth-page__logo--mobile {
  display: none;
  margin-bottom: var(--space-4);
}

/* Card inside split layout */
.auth-split .auth-card {
  width: 100%;
  max-width: 400px;
  box-shadow: none;
  border: none;
  border-radius: 0;
}

/* =============================================
   TAB SWITCHER
============================================= */

.auth-tabs {
  display: flex;
  align-items: center;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  padding: 4px;
  position: relative;
  gap: 0;
  margin-bottom: var(--space-1);
}

.auth-tab {
  flex: 1;
  position: relative;
  z-index: 1;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: inherit;
  transition: color 0.25s ease;
  white-space: nowrap;
  text-align: center;
}

.auth-tab.active {
  color: var(--color-primary-700);
}

/* Animated sliding pill */
.auth-tabs__pill {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
  transition: left 0.28s var(--ease-in-out), width 0.28s var(--ease-in-out);
  pointer-events: none;
  z-index: 0;
}

/* =============================================
   AUTH PANELS — fade transition
============================================= */

.auth-panel {
  display: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.auth-panel.active {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  animation: authPanelIn 0.28s var(--ease-out) both;
}

@keyframes authPanelIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Switch links inside footer (button styled as link) */
.auth-link-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  font-weight: var(--font-semibold);
  color: var(--color-primary-700);
  padding: 0;
  text-decoration: none;
  transition: color 0.15s ease;
}

.auth-link-btn:hover {
  color: var(--color-primary-800);
  text-decoration: underline;
}

/* Error message — hidden by default, fade in only when shown */
.auth-form__error {
  /* No animation by default — only when actively shown */
}

.auth-form__error:not([hidden]) {
  animation: errorFadeIn 0.2s ease both;
}

@keyframes errorFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Loading state on submit button */
.auth-form__submit:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* =============================================
   RESPONSIVE — split layout
============================================= */

@media (max-width: 1024px) {
  .auth-split { grid-template-columns: 1fr 1.2fr; max-width: 860px; }
  .auth-split__brand { padding: var(--space-10) var(--space-8); }
  .auth-split__brand-content .auth-split__perks { display: none; }
}

@media (max-width: 768px) {
  .auth-body--split { padding: var(--space-5) var(--space-4); align-items: flex-start; padding-top: var(--space-8); }
  .auth-split { grid-template-columns: 1fr; max-width: 480px; min-height: auto; border-radius: var(--radius-2xl); }
  .auth-split__brand { display: none; }
  .auth-split__form-side {
    padding: var(--space-6) var(--space-6);
    justify-content: flex-start;
  }
  .auth-page__logo--mobile { display: flex; }
  .auth-split .auth-card { max-width: 100%; }
  .auth-back-home { display: inline-flex; }
}

@media (max-width: 480px) {
  .auth-split__form-side { padding: var(--space-6) var(--space-4); padding-top: var(--space-8); }
  .auth-split .auth-card { padding: var(--space-5) var(--space-4); border-radius: var(--radius-xl); }
  .auth-tab { font-size: var(--text-xs); padding: var(--space-2) var(--space-3); }
}

@media (max-width: 360px) {
  .auth-split__form-side { padding: var(--space-5) var(--space-3); }
  .auth-split .auth-card { padding: var(--space-4) var(--space-3); }
  .auth-form__input { font-size: var(--text-sm); height: 42px; }
  .auth-form__submit { height: 44px; font-size: var(--text-sm); }
}

/* Keep the sign-in experience as one readable column on phones and tablets.
   The previous 768px breakpoint left 769–900px screens with two narrow halves. */
@media (max-width: 900px) {
  .auth-body--split {
    align-items: flex-start;
    padding: var(--space-6) var(--space-4);
  }

  .auth-split {
    grid-template-columns: minmax(0, 1fr);
    width: min(100%, 520px);
    min-height: auto;
    border-radius: var(--radius-2xl);
  }

  .auth-split__brand { display: none; }

  .auth-split__form-side {
    min-width: 0;
    padding: var(--space-6);
    overflow: visible;
  }

  .auth-page__logo--mobile { display: flex; }
  .auth-split .auth-card { min-width: 0; max-width: 100%; }
  .auth-tabs,
  .auth-panel,
  .auth-form,
  .auth-form__field { min-width: 0; max-width: 100%; }
}

@media (max-width: 480px) {
  .auth-body--split { padding: var(--space-4) var(--space-3); }
  .auth-split__form-side { padding: var(--space-5) var(--space-3); }
}