/**
 * =============================================================================
 * REFADEM OPS ENTERPRISE PLATFORM — DESIGN SYSTEM SOUVERAIN (PHASE A)
 * Spécification : Sovereign Institutional Operations Shell (DESIGN.md)
 * 100% Autonome • Zéro CDN externe • Résilience réseau pour Goma (Nord-Kivu)
 * =============================================================================
 */

/* -----------------------------------------------------------------------------
 * 1. VARIABLES CSS & THEME CANONIQUE
 * ----------------------------------------------------------------------------- */
:root {
  /* Surfaces & Canvas */
  --canvas-root: #0B1117;
  --surface-base: #0E141B;
  --surface-raised: #111820;
  --surface-layer-1: #151D25;
  --surface-layer-2: #19222B;
  --surface-layer-3: #1D2731;

  /* Bordures */
  --border-subtle: #1E2730;
  --border-medium: #27323C;
  --border-strong: #303B45;

  /* Typographie & Couleurs de texte */
  --text-primary: #F2F6F4;
  --text-secondary: #A4B0B8;
  --text-muted: #6F7C85;
  --text-inverse: #0B1117;

  /* Signaux opérationnels & Marque REFADEM */
  --primary-emerald: #00C98D;
  --primary-hover: #00B981;
  --primary-active: #009E6D;
  --primary-tint: #42E6A7;
  --primary-bg: rgba(0, 201, 141, 0.12);
  --primary-border: rgba(0, 201, 141, 0.35);

  --secondary-teal: #19BFC1;
  --secondary-tint: #49DADC;
  --secondary-bg: rgba(25, 191, 193, 0.12);
  --secondary-border: rgba(25, 191, 193, 0.35);

  --state-success: #20C997;
  --state-warning: #F4B942;
  --warning-bg: rgba(244, 185, 66, 0.12);
  --warning-border: rgba(244, 185, 66, 0.35);

  --state-critical: #FF6262;
  --critical-bg: rgba(255, 98, 98, 0.15);
  --critical-border: rgba(255, 98, 98, 0.45);

  --state-info: #5DA9E9;
  --info-bg: rgba(93, 169, 233, 0.12);
  --info-border: rgba(93, 169, 233, 0.35);

  /* Polices & Échelles typographiques */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Geist', 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Dimensions structurelles */
  --sidebar-width: 260px;
  --topbar-height: 48px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-xl: 8px;
}

/* -----------------------------------------------------------------------------
 * 2. RESET & BASE
 * ----------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
  background-color: var(--canvas-root);
  color: var(--text-primary);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background-color: var(--canvas-root);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Scrollbars sobres et techniques */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--surface-base);
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* -----------------------------------------------------------------------------
 * 3. GRILLE DE MISE EN PAGE : SHELL SOUVERAIN (FIXED-FLUID HYBRID)
 * ----------------------------------------------------------------------------- */
.app-shell {
  display: flex;
  min-height: 100vh;
  background-color: var(--canvas-root);
}

/* Sidebar fixe gauche (260px) */
.app-sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  background-color: var(--surface-base);
  border-right: 1px solid var(--border-medium);
  display: flex;
  flex-direction: column;
  z-index: 40;
  overflow-y: auto;
}

/* En-tête Sidebar avec Sceau Souverain */
.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border-medium);
  background: linear-gradient(180deg, rgba(21, 29, 37, 0.5) 0%, rgba(14, 20, 27, 0) 100%);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--primary-emerald);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background-color: var(--primary-bg);
  border: 1px solid var(--primary-border);
  padding: 2px 6px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Sections de Navigation Sidebar */
.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-group-title {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0 8px;
  margin-bottom: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border-left: 2px solid transparent;
  transition: all 0.15s ease;
  cursor: pointer;
}

.nav-item:hover {
  color: var(--text-primary);
  background-color: var(--surface-layer-1);
}

.nav-item.active {
  color: var(--text-primary);
  background-color: var(--surface-layer-2);
  border-left-color: var(--primary-emerald);
}

.nav-item .nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: inherit;
}

.nav-item.active .nav-icon {
  color: var(--primary-emerald);
}

.nav-counter {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: var(--radius-md);
  background-color: var(--surface-layer-3);
  color: var(--text-secondary);
}

.nav-counter.critical {
  background-color: var(--critical-bg);
  color: var(--state-critical);
  border: 1px solid var(--critical-border);
  animation: pulse-border 2s infinite;
}

/* Pied de Sidebar avec Session Utilisateur */
.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border-medium);
  background-color: var(--surface-raised);
}

.user-session-card {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--surface-layer-3);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-emerald);
  font-weight: 700;
  font-size: 12px;
  font-family: var(--font-mono);
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-secondary);
  display: block;
}

/* Zone principale (Content Area) */
.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  max-width: calc(100% - var(--sidebar-width));
  min-width: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Topbar utilitaire fixe (48px) */
.app-topbar {
  height: var(--topbar-height);
  background-color: var(--surface-base);
  border-bottom: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar-territory {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.pulsing-node {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary-emerald);
  box-shadow: 0 0 8px var(--primary-emerald);
  animation: pulse-node 2s infinite;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.omni-search-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--surface-raised);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}

.omni-search-btn:hover {
  border-color: var(--border-strong);
  color: var(--text-secondary);
}

.kbd-shortcut {
  font-family: var(--font-mono);
  font-size: 10px;
  background-color: var(--surface-layer-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 1px 4px;
  color: var(--text-secondary);
}

/* Bannière d'urgence permanente (Emergency Dispatch Banner) */
.emergency-banner {
  background: linear-gradient(90deg, #5C0B0E 0%, #380709 100%);
  border-bottom: 1px solid var(--state-critical);
  padding: 8px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-primary);
  font-size: 12px;
  z-index: 25;
}

.emergency-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.emergency-tag {
  background-color: var(--state-critical);
  color: var(--text-inverse);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Espace de travail interne */
.app-content {
  flex: 1;
  padding: 24px;
  max-width: 1600px;
  width: 100%;
}

/* -----------------------------------------------------------------------------
 * 4. COMPOSANTS D'INTERFACE (ATOMIC COMPONENTS)
 * ----------------------------------------------------------------------------- */

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 34px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

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

.btn-primary {
  background-color: var(--primary-emerald);
  color: var(--text-inverse);
  border-color: var(--primary-emerald);
}
.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
}
.btn-primary:active:not(:disabled) {
  background-color: var(--primary-active);
}

.btn-secondary {
  background-color: var(--surface-layer-1);
  color: var(--text-primary);
  border-color: var(--border-medium);
}
.btn-secondary:hover:not(:disabled) {
  background-color: var(--surface-layer-2);
  border-color: var(--border-strong);
}

.btn-destructive {
  background-color: var(--critical-bg);
  color: var(--state-critical);
  border-color: var(--critical-border);
}
.btn-destructive:hover:not(:disabled) {
  background-color: var(--state-critical);
  color: var(--text-inverse);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) {
  background-color: var(--surface-layer-2);
  color: var(--text-primary);
}

.btn-sm {
  height: 28px;
  padding: 0 10px;
  font-size: 12px;
}

/* Badges & Chips de statut */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 22px;
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.badge-success {
  background-color: var(--primary-bg);
  color: var(--primary-emerald);
  border-color: var(--primary-border);
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--state-warning);
  border-color: var(--warning-border);
}

.badge-critical {
  background-color: var(--critical-bg);
  color: var(--state-critical);
  border-color: var(--critical-border);
}

.badge-info {
  background-color: var(--info-bg);
  color: var(--state-info);
  border-color: var(--info-border);
}

.badge-neutral {
  background-color: var(--surface-layer-2);
  color: var(--text-secondary);
  border-color: var(--border-medium);
}

/* Cartes KPI (Metric Cards) */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background-color: var(--surface-layer-1);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s;
}

.metric-card:hover {
  border-color: var(--border-strong);
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.metric-title {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-icon {
  width: 20px;
  height: 20px;
  color: var(--primary-emerald);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.metric-footer {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-secondary);
}

/* Tableaux de données (Dense Institutional Workstation) */
.table-container {
  background-color: var(--surface-layer-1);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: 24px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table thead {
  background-color: var(--surface-base);
  border-bottom: 1px solid var(--border-medium);
}

.data-table th {
  height: 36px;
  padding: 0 16px;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.data-table tbody tr {
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.1s;
}

.data-table tbody tr:last-child {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background-color: var(--surface-layer-2);
}

.data-table td {
  height: 44px;
  padding: 0 16px;
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table td.mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

.data-table th.col-sticky-right,
.data-table td.col-sticky-right {
  position: sticky;
  right: 0;
  z-index: 2;
  background-color: var(--surface-layer-1);
  box-shadow: -2px 0 6px rgba(0, 0, 0, 0.25);
}

.data-table thead th.col-sticky-right {
  background-color: var(--surface-base);
  z-index: 3;
}

.data-table tbody tr:hover td.col-sticky-right {
  background-color: var(--surface-layer-2);
}

/* Formulaires & Champs de saisie */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea, select, input, textarea {
  width: 100%;
  height: 36px;
  background-color: var(--surface-raised);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0 12px;
  color: var(--text-primary);
  font-size: 13px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

select option, .form-select option, option {
  background-color: #151D25;
  color: #F2F6F4;
  padding: 6px 10px;
}

.form-textarea, textarea {
  height: auto;
  min-height: 80px;
  padding: 8px 12px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus, select:focus, input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-emerald);
  box-shadow: 0 0 0 1px var(--primary-emerald);
}

.form-input::placeholder, .form-textarea::placeholder, input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

/* Modales & Boîtes de dialogue */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(11, 17, 23, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background-color: var(--surface-layer-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-body {
  padding: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-medium);
  background-color: var(--surface-layer-1);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* Skeletons de chargement asynchrone */
.skeleton {
  background: linear-gradient(90deg, #151D25 25%, #1D2731 50%, #151D25 75%);
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
  width: 100%;
}

.skeleton-card {
  height: 110px;
  border-radius: var(--radius-lg);
}

.skeleton-table-row {
  height: 40px;
  border-radius: var(--radius-sm);
}

/* États vides (Zero-Data State) */
.empty-state {
  padding: 48px 24px;
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background-color: var(--surface-layer-1);
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--text-muted);
}

.empty-state-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.empty-state-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 420px;
  margin: 0 auto 20px;
}

/* -----------------------------------------------------------------------------
 * 5. ANIMATIONS TECHNIQUES
 * ----------------------------------------------------------------------------- */
@keyframes pulse-node {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.9); }
}

@keyframes pulse-border {
  0%, 100% { border-color: rgba(255, 98, 98, 0.4); }
  50% { border-color: rgba(255, 98, 98, 0.8); }
}

@keyframes skeleton-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* -----------------------------------------------------------------------------
 * 6. RESPONSIVE BREAKPOINTS (DESKTOP / TABLETTE / MOBILE)
 * ----------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .app-sidebar {
    width: 64px;
    min-width: 64px;
  }
  .app-sidebar .brand-title,
  .app-sidebar .brand-subtitle,
  .app-sidebar .nav-group-title,
  .app-sidebar .nav-item span,
  .app-sidebar .nav-counter,
  .app-sidebar .user-details {
    display: none;
  }
  .app-sidebar .sidebar-header {
    padding: 12px 8px;
    text-align: center;
  }
  .app-sidebar .nav-item {
    justify-content: center;
    padding: 10px 0;
  }
  .app-main {
    margin-left: 64px;
  }
}

@media (max-width: 768px) {
  .app-sidebar {
    display: none;
  }
  .app-main {
    margin-left: 0;
  }
  .app-content {
    padding: 16px;
  }
  .topbar-territory span.subtext {
    display: none;
  }
}