/**
 * Modern Registration Form Styles
 * Design System for Artibox Registration Forms
 */

:root {
  /* Couleurs principales */
  --form-primary: #274798;
  --form-primary-dark: #1a3270;
  --form-primary-light: #3a5cb8;
  --form-success: #17C653;
  --form-success-light: rgba(23, 198, 83, 0.1);
  --form-warning: #F6C000;
  --form-warning-light: rgba(246, 192, 0, 0.1);
  --form-danger: #F8285A;
  --form-danger-light: rgba(248, 40, 90, 0.1);
  
  /* Couleurs neutres */
  --form-bg: #ffffff;
  --form-bg-secondary: #F9FAFB;
  --form-border: #E5E7EB;
  --form-border-focus: #274798;
  --form-text: #1F2937;
  --form-text-muted: #6B7280;
  --form-text-placeholder: #9CA3AF;
  
  /* Espacements */
  --form-radius: 20px;
  --form-radius-sm: 10px;
  --form-spacing: 20px;
  --form-input-height: 48px;
  
  /* Transitions */
  --form-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Ombres */
  --form-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --form-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --form-shadow-focus: 0 0 0 4px rgba(39, 71, 152, 0.25);
}

/* Container principal avec fond bleu gradient */
.modern-form {
  background: linear-gradient(135deg, var(--form-primary) 0%, var(--form-primary-dark) 100%);
  border-radius: var(--form-radius);
  padding: 32px 24px;
  width: 100%;
  box-sizing: border-box;
  box-shadow: var(--form-shadow-lg);
  position: relative;
  overflow: hidden;
}

/* Decorative gradient overlay */
.modern-form::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 50%;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

/* Header du formulaire */
.modern-form__header {
  text-align: center;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.modern-form__title {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 6px 0;
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.modern-form__subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  font-weight: 400;
}

/* Stepper */
.form-stepper {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  gap: 0;
}

.form-stepper__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: var(--form-transition);
  flex-shrink: 0;
}

.form-stepper__indicator {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--form-transition);
  position: relative;
}

.form-stepper__number {
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--form-transition);
}

.form-stepper__check {
  position: absolute;
  opacity: 0;
  color: var(--form-primary);
  transition: var(--form-transition);
}

.form-stepper__label {
  font-size: 12px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--form-transition);
  white-space: nowrap;
}

.form-stepper__line {
  width: 60px;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  margin: 0 12px;
  margin-bottom: 18px;
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.form-stepper__line::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: var(--progress, 0%);
  background: #ffffff;
  border-radius: 2px;
  transition: width 0.4s ease;
}

/* Stepper states */
.form-stepper__step--active .form-stepper__indicator {
  background: #ffffff;
  border-color: #ffffff;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.4);
}

.form-stepper__step--active .form-stepper__number {
  color: var(--form-primary);
}

.form-stepper__step--active .form-stepper__label {
  color: #ffffff;
}

.form-stepper__step--completed .form-stepper__indicator {
  background: #ffffff;
  border-color: #ffffff;
}

.form-stepper__step--completed .form-stepper__number {
  opacity: 0;
}

.form-stepper__step--completed .form-stepper__check {
  opacity: 1;
}

.form-stepper__step--completed .form-stepper__label {
  color: rgba(255, 255, 255, 0.8);
}

/* Slider container */
.form-slider {
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.form-slider__container {
  position: relative;
  width: 100%;
}

.form-slider__step {
  display: none;
  width: 100%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.form-slider__step--active {
  display: block;
  opacity: 1;
}

/* Contenu de l'étape */
.form-step__content {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  border-radius: var(--form-radius-sm);
  padding: 24px 20px;
  margin-bottom: 16px;
}

/* Groupe de champ */
.form-field {
  position: relative;
  margin-bottom: 16px;
}

.form-field:last-child {
  margin-bottom: 0;
}

/* Ligne de champs (CP + Ville) */
.form-field-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.form-field-row .form-field {
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
}

.form-field-row .form-field:first-child {
  flex: 0 0 90px;
  min-width: 90px;
}

.form-field-row .form-field:last-child {
  flex: 1;
  min-width: 0;
}

.form-field-row .form-field__label {
  min-height: 36px;
  display: flex;
  align-items: flex-end;
}

.form-field-row .form-field__input-wrapper {
  flex: 1;
}

@media (max-width: 400px) {
  .form-field-row {
    flex-direction: column;
    gap: 16px;
  }
  
  .form-field-row .form-field:first-child {
    flex: 1;
    min-width: 100%;
  }
  
  .form-field-row .form-field__label {
    min-height: auto;
  }
}

/* Labels */
.form-field__label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--form-text);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
  transition: var(--form-transition);
}

.form-field__label.error {
  color: var(--form-danger);
}

.form-field__label--required::after {
  content: '*';
  color: var(--form-danger);
  margin-left: 3px;
}

/* Input moderne */
.form-field__input {
  width: 100%;
  height: var(--form-input-height);
  padding: 0 18px;
  font-size: 16px;
  color: var(--form-text);
  background: var(--form-bg);
  border: 2px solid var(--form-border);
  border-radius: var(--form-radius-sm);
  transition: var(--form-transition);
  outline: none;
}

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

.form-field__input:hover {
  border-color: #D1D5DB;
}

.form-field__input:focus {
  border-color: var(--form-border-focus);
  box-shadow: var(--form-shadow-focus);
}

/* États de validation */
.form-field--success .form-field__input,
.form-field__input.success {
  border-color: var(--form-success);
  background: var(--form-success-light);
}

.form-field--error .form-field__input,
.form-field__input.error {
  border-color: var(--form-danger);
  background: var(--form-danger-light);
}

/* Wrapper pour input avec icône */
.form-field__input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.form-field__input-wrapper .form-field__input {
  padding-right: 52px;
}

/* Icône de validation */
.form-field__icon {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  opacity: 0;
  transition: var(--form-transition);
  pointer-events: none;
}

.form-field--success .form-field__icon--success,
.form-field--error .form-field__icon--error {
  opacity: 1;
}

.form-field__icon--success {
  color: var(--form-success);
}

.form-field__icon--error {
  color: var(--form-danger);
}

/* Spinner de champ */
.form-field__spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--form-border);
  border-top-color: var(--form-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Message d'erreur */
.form-field__error {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--form-danger);
  transition: var(--form-transition);
}

/* Utility classes */
.d-none {
  display: none !important;
}

.form-field--error .form-field__error {
  display: flex;
}

/* Container mot de passe */
.password-field {
  position: relative;
}

.password-field__input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-field__input-wrapper input {
  padding-right: 52px;
}

.password-field__toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--form-text-muted);
  padding: 6px;
  transition: var(--form-transition);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.password-field__toggle:hover {
  color: var(--form-text);
  background: var(--form-bg-secondary);
}

/* Indicateur de force du mot de passe */
.password-strength {
  margin-top: 12px;
  padding: 14px;
  background: var(--form-bg-secondary);
  border-radius: var(--form-radius-sm);
}

.password-strength.d-none {
  display: none !important;
}

/* Barre de progression */
.password-strength__bar {
  height: 6px;
  background: #E5E7EB;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 14px;
}

.password-strength__fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease, background-color 0.3s ease;
  width: 0;
}

/* Classes utilisées par form-handler.js */
.password-strength__fill.strength-weak { 
  width: 20%; 
  background: linear-gradient(90deg, #F8285A, #FF6B6B); 
}
.password-strength__fill.strength-fair { 
  width: 40%; 
  background: linear-gradient(90deg, #F6C000, #FFD93D); 
}
.password-strength__fill.strength-good { 
  width: 80%; 
  background: linear-gradient(90deg, #6BCB77, #17C653); 
}
.password-strength__fill.strength-strong { 
  width: 100%; 
  background: linear-gradient(90deg, #17C653, #0FA958); 
}

/* Label de force */
.password-strength__label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--form-text-muted);
}

/* Classes utilisées par form-handler.js */
.password-strength__label.strength-weak-text { color: #F8285A; }
.password-strength__label.strength-fair-text { color: #F6C000; }
.password-strength__label.strength-good-text { color: #17C653; }
.password-strength__label.strength-strong-text { color: #0FA958; }

/* Critères */
.password-criteria {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.password-criteria__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--form-text-muted);
  transition: var(--form-transition);
}

/* Classes utilisées par form-handler.js */
.password-criteria__item.valid {
  color: var(--form-success);
}

.password-criteria__icon,
.criteria-icon {
  width: 18px;
  height: 18px;
  min-width: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: bold;
  background: #E5E7EB;
  color: #9CA3AF;
  transition: var(--form-transition);
  flex-shrink: 0;
}

.password-criteria__item.valid .password-criteria__icon,
.password-criteria__item.valid .criteria-icon {
  background: var(--form-success);
  color: white;
}

/* Avertissement caractères non autorisés */
.password-invalid-chars {
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--form-danger-light);
  border: 1px solid var(--form-danger);
  border-radius: 6px;
  font-size: 12px;
  color: var(--form-danger);
}

.password-invalid-chars.d-none {
  display: none !important;
}

/* Navigation entre étapes */
.form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.form-nav__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--form-radius-sm);
  cursor: pointer;
  transition: var(--form-transition);
  border: none;
}

.form-nav__btn--prev {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  backdrop-filter: blur(10px);
}

.form-nav__btn--prev:hover {
  background: rgba(255, 255, 255, 0.25);
}

.form-nav__btn--next {
  background: #ffffff;
  color: var(--form-primary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
  margin-left: auto;
}

.form-nav__btn--next:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Bouton de soumission */
.modern-form .form-submit,
.modern-form .form-submit.btn,
.modern-form .form-submit.cta-ar--custom {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  padding: 12px 24px !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  color: var(--form-primary) !important;
  background: #ffffff !important;
  border: none !important;
  border-radius: var(--form-radius-sm) !important;
  cursor: pointer !important;
  transition: var(--form-transition) !important;
  position: relative !important;
  overflow: hidden !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1) !important;
  width: auto !important;
  height: auto !important;
}

.modern-form .form-submit:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

.modern-form .form-submit.d-none {
  display: none !important;
}

.form-submit__spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid rgba(39, 71, 152, 0.2);
  border-top-color: var(--form-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  opacity: 0;
  pointer-events: none;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Loading button */
.modern-form .loading-btn,
.modern-form .loading-btn.btn,
.modern-form .loading-btn.cta-ar--custom {
  display: none !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  padding: 12px 24px !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  color: var(--form-primary) !important;
  background: rgba(255, 255, 255, 0.8) !important;
  border: none !important;
  border-radius: var(--form-radius-sm) !important;
  cursor: not-allowed !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1) !important;
  width: auto !important;
  height: auto !important;
}

.modern-form .loading-btn:not(.d-none) {
  display: inline-flex !important;
}

.modern-form .loading-btn .form-submit__spinner {
  position: static;
  transform: none;
  opacity: 1;
  width: 18px;
  height: 18px;
  border-width: 2px;
  animation: spin-loading 0.8s linear infinite;
}

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

/* Checkbox moderne */
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}

.form-checkbox__input {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--form-border);
  border-radius: 5px;
  cursor: pointer;
  transition: var(--form-transition);
  flex-shrink: 0;
  margin-top: 2px;
  background: var(--form-bg);
  position: relative;
}

.form-checkbox__input:checked {
  background: var(--form-primary);
  border-color: var(--form-primary);
}

.form-checkbox__input:checked::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.form-checkbox__label {
  font-size: 14px;
  color: var(--form-text);
  line-height: 1.6;
}

.form-checkbox__label a {
  color: var(--form-primary);
  text-decoration: underline;
  font-weight: 500;
}

.form-checkbox__label a:hover {
  color: var(--form-primary-dark);
}

/* Erreur checkbox */
.form-field .checkboxError {
  display: none;
  margin-top: 10px;
  font-size: 13px;
  color: var(--form-danger);
}

/* Alerte d'erreur API */
.form-alert {
  padding: 14px 18px;
  border-radius: var(--form-radius-sm);
  margin-bottom: 20px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.form-alert--error {
  background: var(--form-danger-light);
  color: #991B1B;
  border: 1px solid rgba(248, 40, 90, 0.2);
}

.form-alert--success {
  background: var(--form-success-light);
  color: #166534;
  border: 1px solid rgba(23, 198, 83, 0.2);
}

.form-alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

/* Autocomplete list */
.autocomplete-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--form-bg);
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius-sm);
  box-shadow: var(--form-shadow-lg);
  z-index: 100;
  max-height: 180px;
  overflow-y: auto;
  display: none;
}

.autocomplete-list-item {
  padding: 10px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: var(--form-transition);
  border-bottom: 1px solid var(--form-border);
}

.autocomplete-list-item:last-child {
  border-bottom: none;
}

.autocomplete-list-item:hover {
  background: var(--form-bg-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .modern-form {
    padding: 28px 20px;
    border-radius: 20px;
    max-width: 100%;
  }
  
  .modern-form__title {
    font-size: 24px;
  }

  .modern-form__subtitle {
    font-size: 14px;
  }
  
  .form-stepper {
    margin-bottom: 24px;
  }

  .form-stepper__indicator {
    width: 38px;
    height: 38px;
  }

  .form-stepper__number {
    font-size: 14px;
  }

  .form-stepper__label {
    font-size: 12px;
  }

  .form-stepper__line {
    width: 50px;
    margin: 0 12px;
    margin-bottom: 16px;
  }

  .form-step__content {
    padding: 20px;
  }
  
  .form-field__input {
    height: 52px;
    font-size: 16px;
  }
  
  .form-nav__btn {
    padding: 12px 20px;
    font-size: 14px;
  }

  .form-submit {
    padding: 12px 24px;
    font-size: 14px;
  }
}

@media (max-width: 400px) {
  .modern-form {
    padding: 24px 16px;
  }

  .form-stepper__label {
    display: none;
  }

  .form-stepper__line {
    width: 40px;
    margin-bottom: 0;
  }
}