/**
 * SoPlanning - Login Page Notion Style
 * Refonte UI suivant structure DSFR avec style visuel Notion
 *
 * Structure:
 * - Header (logo + titre + selecteur langue)
 * - Main (carte de connexion centree)
 * - Footer (version + support)
 */

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
  /* Couleurs de fond */
  --login-bg: #FBFBFA;
  --login-card-bg: #FFFFFF;

  /* Couleurs de texte */
  --login-text-primary: #37352F;
  --login-text-muted: #787774;
  --login-text-placeholder: #BDBDBD;

  /* Elements interactifs */
  --login-blue: #2383E2;
  --login-blue-hover: #1D6CBE;
  --login-blue-light: rgba(35, 131, 226, 0.1);

  /* Bordures */
  --login-border: #E0E0E0;
  --login-input-border: #D1D1D1;
  --login-input-border-hover: #BDBDBD;

  /* Etats erreur */
  --login-error-bg: #FEF2F2;
  --login-error-border: #FCA5A5;
  --login-error-text: #991B1B;

  /* Etats succes */
  --login-success-bg: #F0FDF4;
  --login-success-border: #86EFAC;
  --login-success-text: #166534;

  /* Ombres */
  --login-card-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --login-input-shadow: 0 0 0 3px rgba(35, 131, 226, 0.1);
  --login-button-shadow: 0 2px 8px rgba(35, 131, 226, 0.3);

  /* Typographie */
  --login-font: ui-sans-serif, -apple-system, BlinkMacSystemFont,
                "Segoe UI Variable Display", "Segoe UI", Helvetica,
                "Apple Color Emoji", Arial, sans-serif, "Segoe UI Emoji";

  /* Tailles de police */
  --login-title-size: 24px;
  --login-subtitle-size: 14px;
  --login-base-size: 14px;
  --login-small-size: 13px;
  --login-xs-size: 12px;

  /* Graisses */
  --login-weight-regular: 400;
  --login-weight-medium: 500;
  --login-weight-semibold: 600;

  /* Dimensions */
  --login-input-height: 40px;
  --login-button-height: 42px;
  --login-border-radius: 6px;
  --login-input-radius: 4px;

  /* Transitions */
  --login-transition-fast: 150ms ease;
  --login-transition-normal: 200ms ease;
  --login-transition-slow: 300ms ease;
}

/* ========================================
   RESET & BASE
   ======================================== */
.login-body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--login-bg);
  font-family: var(--login-font);
  font-size: var(--login-base-size);
  font-weight: var(--login-weight-medium);
  color: var(--login-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.login-body * {
  box-sizing: border-box;
}

/* ========================================
   SKIP LINK (Accessibilite)
   ======================================== */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  background: var(--login-blue);
  color: #FFFFFF;
  padding: 12px 16px;
  text-decoration: none;
  font-weight: var(--login-weight-semibold);
  z-index: 10000;
  transform: translateY(-100%);
  transition: transform var(--login-transition-normal);
  border-radius: 0 0 var(--login-border-radius) 0;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid #FFFFFF;
  outline-offset: -4px;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* ========================================
   HEADER
   ======================================== */
.login-header {
  padding: 16px 24px;
  background: var(--login-bg);
  border-bottom: 1px solid var(--login-border);
  flex-shrink: 0;
}

.login-header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.login-branding {
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-logo {
  height: 32px;
  width: auto;
  flex-shrink: 0;
}

.login-app-title {
  font-size: 16px;
  font-weight: var(--login-weight-semibold);
  color: var(--login-text-primary);
}

/* ========================================
   SELECTEUR DE LANGUE
   ======================================== */
.login-language-selector {
  position: relative;
}

.login-language-button {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--login-border);
  border-radius: var(--login-input-radius);
  cursor: pointer;
  transition: all var(--login-transition-fast);
  font-size: var(--login-small-size);
  font-weight: var(--login-weight-medium);
  color: var(--login-text-primary);
  font-family: inherit;
}

.login-language-button:hover {
  background: #F5F5F5;
  border-color: var(--login-input-border-hover);
}

.login-language-button:focus {
  outline: none;
  border-color: var(--login-blue);
  box-shadow: var(--login-input-shadow);
}

.login-language-flag {
  width: 20px;
  height: 14px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.1);
}

.login-language-chevron {
  width: 12px;
  height: 12px;
  color: var(--login-text-muted);
  transition: transform var(--login-transition-fast);
}

.login-language-selector.is-open .login-language-chevron {
  transform: rotate(180deg);
}

.login-language-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 180px;
  max-height: 300px;
  overflow-y: auto;
  background: #FFFFFF;
  border: 1px solid var(--login-border);
  border-radius: var(--login-border-radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: 6px;
  z-index: 100;
  display: none;
}

.login-language-dropdown.is-open {
  display: block;
  animation: dropdownSlide 200ms ease;
}

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

.login-language-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--login-input-radius);
  text-decoration: none;
  color: var(--login-text-primary);
  font-size: var(--login-small-size);
  transition: background var(--login-transition-fast);
}

.login-language-option:hover {
  background: var(--login-blue-light);
  text-decoration: none;
  color: var(--login-text-primary);
}

.login-language-option.is-active {
  background: var(--login-blue-light);
  font-weight: var(--login-weight-semibold);
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.login-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

/* ========================================
   CARTE DE LOGIN
   ======================================== */
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--login-card-bg);
  border-radius: 8px;
  box-shadow: var(--login-card-shadow);
  padding: 40px;
  animation: fadeInUp 400ms ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   TITRE & SOUS-TITRE
   ======================================== */
.login-title {
  font-size: var(--login-title-size);
  font-weight: var(--login-weight-semibold);
  color: var(--login-text-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 8px 0;
  text-align: center;
}

.login-subtitle {
  font-size: var(--login-subtitle-size);
  font-weight: var(--login-weight-regular);
  color: var(--login-text-muted);
  line-height: 1.5;
  text-align: center;
  margin: 0 0 32px 0;
}

/* ========================================
   ALERTES
   ======================================== */
.login-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--login-border-radius);
  margin-bottom: 24px;
  font-size: var(--login-base-size);
  line-height: 1.5;
  animation: slideDown 300ms ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.login-alert-warning {
  background: #FFFBEB;
  border: 1px solid #FCD34D;
  color: #92400E;
}

.login-alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
}

.login-alert-content {
  flex: 1;
  font-weight: var(--login-weight-medium);
}

.login-alert-close {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.6;
  padding: 4px;
  margin: -4px -4px -4px 0;
  transition: opacity var(--login-transition-fast);
  color: inherit;
}

.login-alert-close:hover {
  opacity: 1;
}

/* ========================================
   SECTION OAUTH
   ======================================== */
.login-oauth-section {
  margin-bottom: 24px;
}

.login-oauth-button {
  width: 100%;
  height: var(--login-button-height);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #FFFFFF;
  border: 1px solid var(--login-border);
  border-radius: var(--login-border-radius);
  font-size: var(--login-base-size);
  font-weight: var(--login-weight-medium);
  color: var(--login-text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--login-transition-fast);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.login-oauth-button:hover {
  background: #FAFAFA;
  border-color: var(--login-input-border-hover);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  color: var(--login-text-primary);
}

.login-oauth-button:focus {
  outline: none;
  border-color: var(--login-blue);
  box-shadow: var(--login-input-shadow);
}

.login-oauth-button:active {
  transform: translateY(1px);
}

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

/* ========================================
   SEPARATEUR
   ======================================== */
.login-divider {
  display: flex;
  align-items: center;
  margin: 24px 0;
  text-align: center;
  color: var(--login-text-muted);
  font-size: var(--login-small-size);
  font-weight: var(--login-weight-medium);
}

.login-divider::before,
.login-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--login-border);
}

.login-divider:not(:empty)::before {
  margin-right: 16px;
}

.login-divider:not(:empty)::after {
  margin-left: 16px;
}

/* ========================================
   FORMULAIRE
   ======================================== */
.login-form {
  margin: 0;
}

.login-form-group {
  margin-bottom: 20px;
}

.login-label {
  display: block;
  font-size: var(--login-small-size);
  font-weight: var(--login-weight-medium);
  color: var(--login-text-primary);
  margin-bottom: 6px;
}

.login-input {
  width: 100%;
  height: var(--login-input-height);
  padding: 0 12px;
  font-size: var(--login-base-size);
  font-weight: var(--login-weight-regular);
  font-family: inherit;
  color: var(--login-text-primary);
  background: #FFFFFF;
  border: 1px solid var(--login-input-border);
  border-radius: var(--login-input-radius);
  transition: all var(--login-transition-fast);
}

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

.login-input:hover {
  border-color: var(--login-input-border-hover);
}

.login-input:focus {
  outline: none;
  border-color: var(--login-blue);
  box-shadow: var(--login-input-shadow);
}

.login-input:disabled {
  background: #F5F5F5;
  cursor: not-allowed;
  opacity: 0.6;
}

.login-input.is-invalid {
  border-color: var(--login-error-border);
}

.login-input.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(252, 165, 165, 0.3);
}

/* ========================================
   CHECKBOX
   ======================================== */
.login-checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 20px 0;
}

.login-checkbox {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  cursor: pointer;
  accent-color: var(--login-blue);
  margin: 0;
}

.login-checkbox:focus {
  outline: 2px solid var(--login-blue);
  outline-offset: 2px;
}

.login-checkbox-label {
  font-size: var(--login-small-size);
  font-weight: var(--login-weight-regular);
  color: var(--login-text-primary);
  cursor: pointer;
  user-select: none;
}

/* ========================================
   BOUTON SUBMIT
   ======================================== */
.login-submit-button {
  width: 100%;
  height: var(--login-button-height);
  background: var(--login-blue);
  color: #FFFFFF;
  border: none;
  border-radius: var(--login-border-radius);
  font-size: var(--login-base-size);
  font-weight: var(--login-weight-semibold);
  font-family: inherit;
  cursor: pointer;
  transition: all var(--login-transition-fast);
  margin-top: 24px;
  position: relative;
}

.login-submit-button:hover {
  background: var(--login-blue-hover);
  box-shadow: var(--login-button-shadow);
}

.login-submit-button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(35, 131, 226, 0.4);
}

.login-submit-button:active {
  transform: translateY(1px);
}

.login-submit-button:disabled {
  background: #E0E0E0;
  color: #A0A0A0;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Etat chargement */
.login-submit-button.is-loading {
  color: transparent;
  pointer-events: none;
}

.login-submit-button.is-loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  top: 50%;
  left: 50%;
  margin-left: -9px;
  margin-top: -9px;
  border: 2px solid #FFFFFF;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 600ms linear infinite;
}

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

/* ========================================
   LIENS
   ======================================== */
.login-links {
  margin-top: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-link {
  font-size: var(--login-small-size);
  font-weight: var(--login-weight-medium);
  color: var(--login-blue);
  text-decoration: none;
  transition: color var(--login-transition-fast);
  display: inline-block;
  padding: 4px 0;
}

.login-link:hover {
  color: var(--login-blue-hover);
  text-decoration: underline;
}

.login-link:focus {
  outline: 2px solid var(--login-blue);
  outline-offset: 2px;
  border-radius: 2px;
}

.login-link-secondary {
  color: var(--login-text-muted);
}

.login-link-secondary:hover {
  color: var(--login-text-primary);
}

/* Liens inline avec separateur */
.login-links-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.login-links-separator {
  color: var(--login-border);
}

/* ========================================
   FOOTER
   ======================================== */
.login-footer {
  padding: 20px 24px;
  background: var(--login-bg);
  border-top: 1px solid var(--login-border);
  text-align: center;
  flex-shrink: 0;
}

.login-version {
  font-size: var(--login-xs-size);
  color: var(--login-text-muted);
  margin-bottom: 4px;
}

.login-support-link {
  font-size: var(--login-xs-size);
  color: var(--login-blue);
  text-decoration: none;
}

.login-support-link:hover {
  text-decoration: underline;
}

/* ========================================
   MODAL
   ======================================== */
.login-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: fadeIn 200ms ease;
}

.login-modal-overlay.is-open {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.login-modal {
  width: 100%;
  max-width: 420px;
  background: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  animation: modalSlideUp 250ms ease;
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--login-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.login-modal-title {
  font-size: 18px;
  font-weight: var(--login-weight-semibold);
  color: var(--login-text-primary);
  margin: 0;
}

.login-modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--login-input-radius);
  transition: background var(--login-transition-fast);
  color: var(--login-text-muted);
  font-size: 20px;
  line-height: 1;
}

.login-modal-close:hover {
  background: #F5F5F5;
  color: var(--login-text-primary);
}

.login-modal-close:focus {
  outline: 2px solid var(--login-blue);
  outline-offset: -2px;
}

.login-modal-body {
  padding: 24px;
}

.login-modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--login-border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.login-modal-button {
  height: 36px;
  padding: 0 16px;
  border-radius: var(--login-border-radius);
  font-size: var(--login-base-size);
  font-weight: var(--login-weight-medium);
  font-family: inherit;
  cursor: pointer;
  transition: all var(--login-transition-fast);
  border: none;
}

.login-modal-button-primary {
  background: var(--login-blue);
  color: #FFFFFF;
}

.login-modal-button-primary:hover {
  background: var(--login-blue-hover);
}

.login-modal-button-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(35, 131, 226, 0.4);
}

.login-modal-button-secondary {
  background: #F5F5F5;
  color: var(--login-text-primary);
}

.login-modal-button-secondary:hover {
  background: #E8E8E8;
}

.login-modal-button-secondary:focus {
  outline: 2px solid var(--login-blue);
  outline-offset: -2px;
}

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

/* Tablette */
@media (max-width: 768px) {
  .login-card {
    padding: 32px 28px;
  }

  .login-header-content {
    padding: 0 16px;
  }

  .login-title {
    font-size: 22px;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .login-header {
    padding: 12px 16px;
  }

  .login-header-content {
    flex-wrap: wrap;
    gap: 12px;
  }

  .login-branding {
    gap: 8px;
  }

  .login-logo {
    height: 28px;
  }

  .login-app-title {
    font-size: 14px;
  }

  .login-main {
    padding: 24px 16px;
  }

  .login-card {
    padding: 28px 20px;
    box-shadow: none;
    border: 1px solid var(--login-border);
  }

  .login-title {
    font-size: 20px;
  }

  .login-subtitle {
    font-size: 13px;
    margin-bottom: 24px;
  }

  .login-form-group {
    margin-bottom: 16px;
  }

  .login-input {
    font-size: 16px; /* Empeche zoom iOS */
  }

  .login-modal {
    margin: 16px;
    max-width: none;
  }

  .login-modal-header,
  .login-modal-body,
  .login-modal-footer {
    padding: 16px 20px;
  }

  .login-footer {
    padding: 16px;
  }

  /* Selecteur langue simplifie */
  .login-language-button span:not(.login-language-flag) {
    display: none;
  }

  .login-language-button {
    padding: 8px;
  }
}

/* Mode paysage mobile */
@media (max-height: 600px) and (orientation: landscape) {
  .login-main {
    padding: 16px;
  }

  .login-card {
    padding: 24px;
  }

  .login-title {
    margin-bottom: 4px;
  }

  .login-subtitle {
    margin-bottom: 16px;
  }

  .login-form-group {
    margin-bottom: 12px;
  }

  .login-submit-button {
    margin-top: 16px;
  }
}

/* ========================================
   ACCESSIBILITE
   ======================================== */

/* Focus visible pour navigation clavier */
*:focus-visible {
  outline: 2px solid var(--login-blue);
  outline-offset: 2px;
}

/* Supprime outline par defaut sur clic souris */
*:focus:not(:focus-visible) {
  outline: none;
}

/* Support mouvement reduit */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Support contraste eleve */
@media (prefers-contrast: high) {
  .login-input,
  .login-submit-button,
  .login-oauth-button,
  .login-modal-button {
    border-width: 2px;
  }

  .login-card {
    border: 2px solid var(--login-border);
  }
}

/* ========================================
   UTILITAIRES
   ======================================== */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--login-text-muted);
}

.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }