/**
 * Dashboard Stylesheet - Planning Web V2
 * 
 * Système de design complet avec:
 * - Variables CSS pour thèmes
 * - Layout responsive (mobile-first)
 * - Animations fluides
 * - Accessibilité intégrée
 * - Support light/dark mode
 */

:root {
  /* Palette de couleurs */
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #60a5fa;
  --color-secondary: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --color-info: #0ea5e9;
  
  /* Couleurs de base */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Thème par défaut (light) */
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-tertiary: var(--color-gray-100);
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-muted: var(--color-gray-500);
  --border-color: var(--color-gray-200);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  
  /* Espacements */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Tailles */
  --header-height: 64px;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: var(--color-gray-900);
    --bg-secondary: var(--color-gray-800);
    --bg-tertiary: var(--color-gray-700);
    --text-primary: var(--color-gray-50);
    --text-secondary: var(--color-gray-300);
    --text-muted: var(--color-gray-400);
    --border-color: var(--color-gray-700);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
  }
}

/* ============================================================================
   GLOBAL & RESET
   ========================================================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

body.dashboard-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Focus visible pour accessibilité */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================================================
   APP CONTAINER & LAYOUT
   ========================================================================== */

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100%;
}

.app-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  flex-shrink: 0;
  z-index: 100;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--font-size-lg);
  transition: opacity var(--transition-base);
}

.logo:hover {
  opacity: 0.8;
}

.logo-icon {
  font-size: 28px;
}

.header-nav {
  flex-grow: 1;
  display: flex;
  align-items: center;
}

.header-nav ul {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
  margin-left: var(--spacing-xl);
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-base);
  cursor: help;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.help-toggle {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-base);
}

.help-toggle:hover {
  background-color: var(--bg-tertiary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-name {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.logout-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.logout-btn:hover {
  background-color: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

.app-main {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--bg-secondary);
}

/* ============================================================================
   MAIN SECTIONS
   ========================================================================== */

.auth-section,
.dashboard-section,
.error-section {
  display: none;
}

.auth-section {
  /* display est controlé uniquement par JavaScript (style inline) */
  /* Fix: l'ancienne règle 'display: flex' ici écrasait le 'display: none'
     du sélecteur groupé ci-dessus, empêchant l'affichage du formulaire
     de connexion quand le JS était lent ou en erreur. */
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-container {
  max-width: 400px;
  text-align: center;
}

.auth-container h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

.subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.auth-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.auth-note {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--spacing-md);
}

.dashboard-section {
  display: block;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  width: 100%;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  gap: var(--spacing-lg);
}

.header-title h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.dashboard-controls {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  align-items: center;
}

.view-toggle {
  display: flex;
  gap: var(--spacing-xs);
  background-color: var(--bg-tertiary);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-md);
}

.view-btn {
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  font-size: 18px;
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.view-btn:hover {
  background-color: var(--bg-secondary);
}

.view-btn.active {
  background-color: var(--color-primary);
  color: white;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 300px;
}

.search-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-icon {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
}

/* ============================================================================
   PLANNINGS GRID/LIST
   ========================================================================== */

.plannings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.plannings-grid.list-view {
  grid-template-columns: 1fr;
}

.planning-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  container-type: inline-size;
}

.planning-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.planning-card-color {
  height: 4px;
  background-color: var(--planning-color, var(--color-primary));
}

.planning-card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.planning-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.planning-card-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
  word-break: break-word;
}

.planning-card-body {
  padding: var(--spacing-lg);
  flex-grow: 1;
}

.planning-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.meta-item {
  display: flex;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.meta-icon {
  font-size: 14px;
  min-width: 16px;
}

.planning-card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

.planning-card-footer .button {
  flex: 1;
}

@container (max-width: 380px) {
  .planning-card-footer {
    padding: var(--spacing-md);
    gap: var(--spacing-xs);
  }
  .planning-card-footer .button {
    flex: initial;
    padding: var(--spacing-sm);
  }
  .planning-card-footer .button-primary {
    flex: 1;
  }
  .planning-card-footer .button-secondary .button-text,
  .planning-card-footer .button-danger .button-text {
    display: none;
  }
}

/* ============================================================================
   BUTTONS & FORMS
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.button-primary {
  background-color: var(--color-primary);
  color: white;
}

.button-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.button-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.button-secondary:hover:not(:disabled) {
  background-color: var(--border-color);
}

.button-danger {
  background-color: var(--color-danger);
  color: white;
}

.button-danger:hover:not(:disabled) {
  background-color: #dc2626;
}

.button-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

.button .icon {
  font-size: 18px;
}

/* ============================================================================
   MODALS
   ========================================================================== */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: none !important;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: var(--spacing-lg);
  animation: fadeIn var(--transition-base);
}

.modal.show {
  display: flex !important;
}

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

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

.modal-content {
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp var(--transition-base);
}

.modal-small {
  max-width: 400px;
}

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

.modal-header h2 {
  font-size: var(--font-size-xl);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: color var(--transition-base);
  padding: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--text-primary);
}

/* Forms */
.planning-form {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group label {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="color"],
.form-group textarea {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-help {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.color-picker {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.color-picker input[type="color"] {
  width: 50px;
  height: 50px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  border-radius: var(--border-radius-md);
}

.color-display {
  display: inline-block;
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-md);
  background-color: #3b82f6;
  border: 1px solid var(--border-color);
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

.modal-actions {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* ============================================================================
   EMPTY & LOADING STATES
   ========================================================================== */

.empty-state,
.loading-state,
.error-section {
  display: none;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.empty-state.show,
.loading-state.show,
.error-section.show {
  display: flex !important;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.empty-icon,
.error-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-lg);
}

.empty-state h2,
.error-section h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.empty-state p,
.error-section p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.loading-state .spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-lg);
}

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

/* ============================================================================
   TOASTS
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 400px;
}

.toast {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  animation: slideInRight var(--transition-base);
}

@keyframes slideInRight {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.fadeOut {
  animation: slideOutRight var(--transition-base) forwards;
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(400px);
    opacity: 0;
  }
}

.toast-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  overflow-wrap: anywhere;
}

.toast-copy-btn {
  margin-top: var(--spacing-sm);
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
}

.toast-copy-btn:hover {
  border-color: var(--color-primary);
}

.toast.success {
  border-left: 4px solid var(--color-secondary);
}

.toast.error {
  border-left: 4px solid var(--color-danger);
}

.toast.warning {
  border-left: 4px solid var(--color-warning);
}

.toast.info {
  border-left: 4px solid var(--color-info);
}

/* ============================================================================
   HELP PANEL
   ========================================================================== */

.help-panel {
  position: fixed;
  right: 0;
  top: var(--header-height);
  width: 300px;
  height: calc(100vh - var(--header-height));
  background-color: var(--bg-primary);
  border-left: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  z-index: 150;
  display: none;
  flex-direction: column;
  animation: slideInFromRight var(--transition-base);
}

.help-panel.show {
  display: flex !important;
}

@keyframes slideInFromRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

.help-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.help-header h3 {
  margin: 0;
  font-size: var(--font-size-lg);
}

.help-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.help-content {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

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

@media (max-width: 1024px) {
  .dashboard-section {
    padding: var(--spacing-lg);
  }
  
  .plannings-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .header-nav {
    display: none;
  }
  
  .dashboard-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .dashboard-header .button {
    width: 100%;
  }
  
  .dashboard-controls {
    flex-direction: column;
  }
  
  .search-box {
    max-width: 100%;
  }
  
  .plannings-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    max-width: 95vw;
  }
  
  .help-panel {
    width: 100%;
  }
  
  .toast-container {
    max-width: calc(100vw - var(--spacing-lg) * 2);
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 16px;
    --spacing-xl: 24px;
  }
  
  .header-content {
    padding: 0 var(--spacing-md);
  }
  
  .logo-text {
    display: none;
  }
  
  .dashboard-section {
    padding: var(--spacing-md);
  }
  
  .planning-card-footer .button {
    flex: 1;
    font-size: var(--font-size-xs);
  }
  
  .button-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }
  
  .modal-content {
    max-height: 95vh;
  }
}

/* ============================================================================
   UTILITY CLASSES
   ========================================================================== */

.hidden {
  display: none !important;
}

.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;
}