/**
 * Account Linking Modal - Semi UI Design System
 * Modern, smooth animations, fully responsive
 *
 * @package Checkin_MKT192_WP
 * @since 5.3.1
 */

/* ============================================
   CSS Variables - Semi UI Color Palette
   ============================================ */
:root {
  --semi-primary: #0077fa;
  --semi-primary-hover: #0066d9;
  --semi-primary-active: #0055b8;
  --semi-primary-light: #e6f4ff;
  --semi-success: #00b42a;
  --semi-success-light: #e8ffea;
  --semi-warning: #ff7d00;
  --semi-warning-light: #fff7e6;
  --semi-danger: #f53f3f;
  --semi-danger-light: #ffece8;
  --semi-text-primary: #1c1f23;
  --semi-text-secondary: #646a73;
  --semi-text-tertiary: #8f959e;
  --semi-border: #e0e0e0;
  --semi-border-hover: #bfbfbf;
  --semi-bg-default: #ffffff;
  --semi-bg-secondary: #f5f5f5;
  --semi-bg-tertiary: #fafafa;
  --semi-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --semi-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --semi-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --semi-radius-sm: 6px;
  --semi-radius-md: 12px;
  --semi-radius-lg: 16px;
  --semi-transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --semi-transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --semi-transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Modal Overlay
   ============================================ */
.account-linking-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--semi-transition-normal),
    visibility var(--semi-transition-normal);
  padding: 16px;
}

.account-linking-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   Modal Container
   ============================================ */
.account-linking-modal {
  background: var(--semi-bg-default);
  border-radius: var(--semi-radius-lg);
  box-shadow: var(--semi-shadow-lg);
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow: hidden;
  transform: translateY(20px) scale(0.95);
  opacity: 0;
  transition:
    transform var(--semi-transition-normal),
    opacity var(--semi-transition-normal);
}

.account-linking-overlay.active .account-linking-modal {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* ============================================
   Modal Header
   ============================================ */
.account-linking-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--semi-border);
}

.account-linking-header-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.account-linking-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--semi-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.account-linking-icon.google {
  background: linear-gradient(135deg, #ea4335 0%, #fbbc04 25%, #34a853 50%, #4285f4 100%);
  color: white;
}

.account-linking-icon.facebook {
  background: #1877f2;
  color: white;
}

.account-linking-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--semi-text-primary);
}

.account-linking-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--semi-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--semi-text-tertiary);
  transition: all var(--semi-transition-fast);
}

.account-linking-close:hover {
  background: var(--semi-bg-secondary);
  color: var(--semi-text-primary);
}

.account-linking-close svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   Modal Body
   ============================================ */
.account-linking-body {
  padding: 24px;
  overflow-y: auto;
  max-height: calc(90vh - 180px);
}

/* Info Banner */
.account-linking-info {
  background: var(--semi-primary-light);
  border-radius: var(--semi-radius-md);
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  gap: 12px;
}

.account-linking-info-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--semi-primary);
}

.account-linking-info-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--semi-text-secondary);
}

.account-linking-info-text strong {
  color: var(--semi-text-primary);
  font-weight: 600;
}

/* Form Group */
.account-linking-form-group {
  margin-bottom: 20px;
}

.account-linking-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--semi-text-primary);
  margin-bottom: 8px;
}

.account-linking-label .required {
  color: var(--semi-danger);
  margin-left: 2px;
}

/* Input Styles */
.account-linking-input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--semi-border);
  border-radius: var(--semi-radius-sm);
  font-size: 14px;
  color: var(--semi-text-primary);
  background: var(--semi-bg-default);
  transition: all var(--semi-transition-fast);
  box-sizing: border-box;
}

.account-linking-input:hover {
  border-color: var(--semi-border-hover);
}

.account-linking-input:focus {
  outline: none;
  border-color: var(--semi-primary);
  box-shadow: 0 0 0 3px rgba(0, 119, 250, 0.1);
}

.account-linking-input::placeholder {
  color: var(--semi-text-tertiary);
}

.account-linking-input.error {
  border-color: var(--semi-danger);
}

.account-linking-input.error:focus {
  box-shadow: 0 0 0 3px rgba(245, 63, 63, 0.1);
}

/* Input with Icon */
.account-linking-input-wrapper {
  position: relative;
}

.account-linking-input-wrapper .account-linking-input {
  padding-left: 42px;
}

.account-linking-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--semi-text-tertiary);
  pointer-events: none;
}

/* Divider */
.account-linking-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px 0;
}

.account-linking-divider-line {
  flex: 1;
  height: 1px;
  background: var(--semi-border);
}

.account-linking-divider-text {
  font-size: 13px;
  color: var(--semi-text-tertiary);
  white-space: nowrap;
}

/* Helper Text */
.account-linking-helper {
  font-size: 12px;
  color: var(--semi-text-tertiary);
  margin-top: 6px;
}

.account-linking-helper.error {
  color: var(--semi-danger);
}

/* ============================================
   Buttons
   ============================================ */
.account-linking-btn {
  width: 100%;
  height: 44px;
  border: none;
  border-radius: var(--semi-radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--semi-transition-fast);
  position: relative;
  overflow: hidden;
}

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

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

.account-linking-btn-primary:hover:not(:disabled) {
  background: var(--semi-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--semi-shadow-sm);
}

.account-linking-btn-primary:active:not(:disabled) {
  background: var(--semi-primary-active);
  transform: translateY(0);
}

.account-linking-btn-secondary {
  background: var(--semi-bg-secondary);
  color: var(--semi-text-primary);
}

.account-linking-btn-secondary:hover:not(:disabled) {
  background: var(--semi-border);
}

.account-linking-btn-text {
  background: transparent;
  color: var(--semi-primary);
  height: auto;
  padding: 8px;
}

.account-linking-btn-text:hover:not(:disabled) {
  background: var(--semi-primary-light);
}

/* Loading Spinner */
.account-linking-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: account-linking-spin 0.8s linear infinite;
}

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

/* ============================================
   Footer
   ============================================ */
.account-linking-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--semi-border);
  background: var(--semi-bg-tertiary);
}

.account-linking-footer-actions {
  display: flex;
  gap: 12px;
}

.account-linking-footer-actions .account-linking-btn {
  flex: 1;
}

/* ============================================
   Success State
   ============================================ */
.account-linking-success {
  text-align: center;
  padding: 32px 24px;
}

.account-linking-success-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: var(--semi-success-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--semi-success);
  animation: account-linking-success-pop 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

@keyframes account-linking-success-pop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.account-linking-success-icon svg {
  width: 36px;
  height: 36px;
}

.account-linking-success-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--semi-text-primary);
  margin: 0 0 8px;
}

.account-linking-success-message {
  font-size: 14px;
  color: var(--semi-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ============================================
   Error Alert
   ============================================ */
.account-linking-alert {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--semi-radius-sm);
  margin-bottom: 20px;
  animation: account-linking-shake 0.4s ease;
}

@keyframes account-linking-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  20%,
  60% {
    transform: translateX(-5px);
  }
  40%,
  80% {
    transform: translateX(5px);
  }
}

.account-linking-alert.error {
  background: var(--semi-danger-light);
  border: 1px solid rgba(245, 63, 63, 0.2);
}

.account-linking-alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.account-linking-alert.error .account-linking-alert-icon {
  color: var(--semi-danger);
}

.account-linking-alert-content {
  flex: 1;
}

.account-linking-alert-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--semi-text-primary);
  margin: 0 0 4px;
}

.account-linking-alert-message {
  font-size: 13px;
  color: var(--semi-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* ============================================
   Checkbox Group
   ============================================ */
.account-linking-checkbox-group {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--semi-bg-secondary);
  border-radius: var(--semi-radius-sm);
  border: 1px solid var(--semi-border);
}

.account-linking-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.account-linking-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.account-linking-checkbox-custom {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 2px solid var(--semi-border-hover);
  border-radius: 4px;
  background: var(--semi-bg-default);
  position: relative;
  transition: var(--semi-transition-fast);
  margin-top: 2px;
}

.account-linking-checkbox-custom::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 6px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: var(--semi-transition-fast);
}

.account-linking-checkbox:checked + .account-linking-checkbox-custom {
  background: var(--semi-primary);
  border-color: var(--semi-primary);
}

.account-linking-checkbox:checked + .account-linking-checkbox-custom::after {
  transform: rotate(45deg) scale(1);
}

.account-linking-checkbox:focus + .account-linking-checkbox-custom {
  box-shadow: 0 0 0 3px var(--semi-primary-light);
}

.account-linking-checkbox-label:hover .account-linking-checkbox-custom {
  border-color: var(--semi-primary);
}

.account-linking-checkbox-text {
  font-size: 14px;
  color: var(--semi-text-primary);
  line-height: 1.5;
}

.account-linking-checkbox-hint {
  display: block;
  font-size: 12px;
  color: var(--semi-success);
  font-weight: 500;
  margin-top: 2px;
}

/* ============================================
   Skip/Create New Account Link
   ============================================ */
.account-linking-skip {
  text-align: center;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--semi-border);
}

.account-linking-skip-text {
  font-size: 13px;
  color: var(--semi-text-tertiary);
}

.account-linking-skip-link {
  color: var(--semi-primary);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--semi-transition-fast);
}

.account-linking-skip-link:hover {
  color: var(--semi-primary-hover);
  text-decoration: underline;
}

/* ============================================
   Steps Indicator
   ============================================ */
.account-linking-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}

.account-linking-step {
  display: flex;
  align-items: center;
  gap: 8px;
}

.account-linking-step-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  background: var(--semi-bg-secondary);
  color: var(--semi-text-tertiary);
  transition: all var(--semi-transition-fast);
}

.account-linking-step.active .account-linking-step-number {
  background: var(--semi-primary);
  color: white;
}

.account-linking-step.completed .account-linking-step-number {
  background: var(--semi-success);
  color: white;
}

.account-linking-step-label {
  font-size: 13px;
  color: var(--semi-text-tertiary);
  display: none;
}

.account-linking-step.active .account-linking-step-label {
  color: var(--semi-text-primary);
  font-weight: 500;
}

.account-linking-step-connector {
  width: 40px;
  height: 2px;
  background: var(--semi-border);
  border-radius: 1px;
}

.account-linking-step-connector.completed {
  background: var(--semi-success);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (min-width: 480px) {
  .account-linking-step-label {
    display: block;
  }
}

@media (max-width: 480px) {
  .account-linking-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .account-linking-modal {
    max-width: 100%;
    max-height: 95vh;
    border-radius: var(--semi-radius-lg) var(--semi-radius-lg) 0 0;
    transform: translateY(100%);
  }

  .account-linking-overlay.active .account-linking-modal {
    transform: translateY(0);
  }

  .account-linking-header {
    padding: 16px 20px;
  }

  .account-linking-body {
    padding: 20px;
  }

  .account-linking-footer {
    padding: 16px 20px;
    padding-bottom: calc(16px + env(safe-area-inset-bottom, 0));
  }

  .account-linking-title {
    font-size: 16px;
  }

  .account-linking-info {
    padding: 14px;
  }

  .account-linking-info-text {
    font-size: 13px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .account-linking-modal {
    --semi-bg-default: #1f1f1f;
    --semi-bg-secondary: #2d2d2d;
    --semi-bg-tertiary: #262626;
    --semi-text-primary: #ffffff;
    --semi-text-secondary: #a3a3a3;
    --semi-text-tertiary: #737373;
    --semi-border: #404040;
    --semi-border-hover: #525252;
  }

  .account-linking-input {
    background: var(--semi-bg-secondary);
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  .account-linking-overlay,
  .account-linking-modal,
  .account-linking-btn,
  .account-linking-input {
    transition: none;
  }

  .account-linking-spinner {
    animation: none;
  }

  .account-linking-success-icon {
    animation: none;
  }

  @keyframes account-linking-shake {
    0%,
    100% {
      transform: none;
    }
  }
}