/* ITELEC Theme - Palette de couleurs et styles unifiés */

/* ================================
   Variables CSS ITELEC
   ================================ */
:root {
  /* Couleurs ITELEC Corporate */
  --primary: #0078d7;
  --primary-dark: #003366;
  --primary-light: #4da6e0;
  --secondary: #ffc107;
  --secondary-dark: #e6b800;
  --accent: #ff7900;
  --accent-light: #ff9f40;
  
  /* Couleurs système */
  --dark: #0f172a;
  --dark-lighter: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  
  /* Gradients ITELEC */
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  --gradient-warm: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
  --gradient-infra: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  --gradient-full: linear-gradient(135deg, var(--primary) 0%, var(--accent) 50%, var(--secondary) 100%);
  --gradient-soft: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
  
  /* Glass effects */
  --glass: rgba(255, 255, 255, 0.05);
  --glass-strong: rgba(255, 255, 255, 0.1);
  --glass-medium: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.2);
  --border-soft: rgba(255, 255, 255, 0.05);
  
  /* Ombres */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
  
  /* Rayons de bordure */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --radius-full: 50px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Espacements */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
}

/* ================================
   Reset et base
   ================================ */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ================================
   Background animé ITELEC
   ================================ */
.itelec-bg {
  position: relative;
}

.itelec-bg::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, var(--primary) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, var(--accent) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, var(--secondary) 0%, transparent 50%);
  opacity: 0.1;
  z-index: -2;
  animation: itelecBgMove 20s ease-in-out infinite;
  pointer-events: none;
}

.itelec-bg::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.02;
  z-index: -1;
  background-image: 
    repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.02) 35px, rgba(255,255,255,.02) 70px);
  pointer-events: none;
}

@keyframes itelecBgMove {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-20px, -20px) scale(1.1); }
  66% { transform: translate(20px, -10px) scale(0.9); }
}

/* ================================
   Composants Glass ITELEC
   ================================ */
.glass-card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 
    var(--shadow-xl),
    0 0 40px rgba(0, 120, 215, 0.2);
}

.glass-header {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

/* ================================
   Boutons ITELEC
   ================================ */
.btn-itelec {
  background: var(--gradient-warm);
  color: var(--dark);
  border: none;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
}

.btn-itelec::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left var(--transition-slow);
}

.btn-itelec:hover::before {
  left: 100%;
}

.btn-itelec:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 121, 0, 0.4);
}

.btn-itelec-primary {
  background: var(--gradient);
  color: white;
}

.btn-itelec-primary:hover {
  box-shadow: 0 10px 30px rgba(0, 120, 215, 0.4);
}

.btn-itelec-secondary {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-itelec-secondary:hover {
  background: var(--glass-strong);
  border-color: var(--primary);
}

.btn-itelec-danger {
  background: var(--error);
  color: white;
}

.btn-itelec-danger:hover {
  box-shadow: 0 10px 30px rgba(239, 68, 68, 0.4);
}

/* ================================
   Formulaires ITELEC
   ================================ */
.form-itelec {
  display: grid;
  gap: var(--space-lg);
}

.form-group-itelec {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group-itelec label {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group-itelec input,
.form-group-itelec select,
.form-group-itelec textarea {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 1rem;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.form-group-itelec input:focus,
.form-group-itelec select:focus,
.form-group-itelec textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--glass-medium);
  box-shadow: 
    0 0 0 3px rgba(0, 120, 215, 0.1),
    0 10px 30px rgba(0, 120, 215, 0.2);
  transform: translateY(-2px);
}

.form-group-itelec input::placeholder,
.form-group-itelec textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

/* ================================
   Tableaux ITELEC
   ================================ */
.table-itelec {
  width: 100%;
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.table-itelec th,
.table-itelec td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-soft);
}

.table-itelec th {
  background: var(--glass-strong);
  color: var(--text);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
}

.table-itelec tbody tr:hover {
  background: var(--glass-medium);
}

/* ================================
   Alertes et notifications ITELEC
   ================================ */
.alert-itelec {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  border-left: 4px solid;
  backdrop-filter: blur(10px);
}

.alert-itelec-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--success);
  color: var(--success);
}

.alert-itelec-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--error);
  color: var(--error);
}

.alert-itelec-warning {
  background: rgba(255, 193, 7, 0.1);
  border-color: var(--secondary);
  color: var(--secondary-dark);
}

.alert-itelec-info {
  background: rgba(0, 120, 215, 0.1);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* ================================
   KPIs et statistiques
   ================================ */
.kpi-itelec {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.kpi-itelec::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient);
  border-radius: var(--radius-lg);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-normal);
}

.kpi-itelec:hover {
  transform: translateY(-5px) scale(1.02);
  border-color: transparent;
}

.kpi-itelec:hover::before {
  opacity: 1;
  animation: rotate 3s linear infinite;
}

@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.kpi-value {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.kpi-value.positive { 
  color: var(--success);
  text-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
}

.kpi-value.negative { 
  color: var(--error);
  text-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

.kpi-value.neutral { 
  color: var(--primary-light);
  text-shadow: 0 0 20px rgba(77, 166, 224, 0.5);
}

.kpi-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* ================================
   Animations communes
   ================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ================================
   Utilitaires
   ================================ */
.text-primary { color: var(--primary) !important; }
.text-secondary { color: var(--secondary) !important; }
.text-accent { color: var(--accent) !important; }
.text-success { color: var(--success) !important; }
.text-error { color: var(--error) !important; }
.text-muted { color: var(--text-muted) !important; }

.bg-glass { background: var(--glass) !important; }
.bg-glass-strong { background: var(--glass-strong) !important; }

.animate-fadeInUp { animation: fadeInUp 0.8s ease; }
.animate-slideIn { animation: slideIn 0.5s ease; }
.animate-float { animation: float 6s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }

/* ================================
   OPTIMISATIONS FINALES PERFORMANCE
   ================================ */

/* Optimisation GPU pour animations */
.glass-card,
.kpi-itelec,
.btn-itelec {
  will-change: transform;
}

/* Supprimer will-change après les animations pour libérer la mémoire */
.glass-card:not(:hover),
.kpi-itelec:not(:hover),
.btn-itelec:not(:hover) {
  will-change: auto;
}

/* Optimisation pour écrans haute densité */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .itelec-bg::before,
  .itelec-bg::after {
    transform: translateZ(0); /* Force GPU */
  }
}

/* ================================
   Responsive
   ================================ */
@media (max-width: 768px) {
  :root {
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
  }
  
  .glass-card {
    padding: var(--space-lg);
  }
  
  .kpi-value {
    font-size: 2rem;
  }
  
  .btn-itelec {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
  }
}