/* ==========================================================================
   PORTFOLIO JORDAN NGANGMO - CSS 
   Direction: Architecture Transmédia × Développement Full-Stack
   Philosophie: "La précision structurelle au service de l'innovation digitale"
   ========================================================================== */

/* ==========================================================================
   1. Variables CSS personnalisées
   ========================================================================== */

:root {
  /* === Palette Architecturale === */
  --primary-900: #0A0A0A;        /* Noir architectural profond */
  --primary-800: #1A1A1A;        /* Noir structure principal */
  --primary-700: #2A2A2A;        /* Gris foncé */
  --primary-600: #3A3A3A;        /* Gris moyen */
  --primary-100: #E5E5E5;        /* Gris clair */
  --primary-50: #FAFAFA;         /* Blanc architectural */
  
  /* === Couleurs d'Accent === */
  --accent-600: #00BFE6;         /* Cyan foncé */
  --accent-500: #00D9FF;         /* Cyan principal - Innovation */
  --accent-400: #1AE3FF;         /* Cyan clair */
  --accent-300: #4DEBFF;         /* Cyan très clair */
  
  /* === Couleurs Secondaires === */
  --secondary-600: #E5522B;      /* Orange foncé */
  --secondary-500: #FF6B35;      /* Orange principal - Énergie */
  --secondary-400: #FF8555;      /* Orange clair */
  
  /* === Couleurs Système === */
  --success-500: #00FF88;        /* Vert succès */
  --warning-500: #FFD23F;        /* Jaune attention */
  --error-500: #FF6B6B;          /* Rouge erreur */
  --support-400: #A8A8A8;        /* Gris support */
  --support-300: #C0C0C0;        /* Gris clair support */
  
  /* === Typographie  === */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  
  /* === Échelle Typographique === */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */
  --text-7xl: 4.5rem;     /* 72px */
  
  /* === Poids de Police === */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  
  /* === Espacement Modulaire (8px baseline) === */
  --space-1: 0.25rem;     /* 4px */
  --space-2: 0.5rem;      /* 8px */
  --space-3: 0.75rem;     /* 12px */
  --space-4: 1rem;        /* 16px */
  --space-5: 1.25rem;     /* 20px */
  --space-6: 1.5rem;      /* 24px */
  --space-8: 2rem;        /* 32px */
  --space-10: 2.5rem;     /* 40px */
  --space-12: 3rem;       /* 48px */
  --space-16: 4rem;       /* 64px */
  --space-20: 5rem;       /* 80px */
  --space-24: 6rem;       /* 96px */
  --space-32: 8rem;       /* 128px */
  
  /* === Rayons de Bordure === */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 50%;
  
  /* === Ombres  === */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  
  /* === Ombres Colorées === */
  --shadow-accent: 0 10px 30px rgba(0, 217, 255, 0.15);
  --shadow-accent-lg: 0 20px 40px rgba(0, 217, 255, 0.2);
  --shadow-secondary: 0 10px 30px rgba(255, 107, 53, 0.15);
  
  /* === Dégradés === */
  --gradient-primary: linear-gradient(135deg, var(--accent-500) 0%, var(--secondary-500) 100%);
  --gradient-background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 50%, var(--primary-900) 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(255, 107, 53, 0.1) 100%);
  
  /* === Animations et Transitions === */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* === Z-index === */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* === Breakpoints === */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1440px;
}

/* ==========================================================================
   2. Réinitialisation CSS & Styles de base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1, "liga" 1;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: 1.6;
  color: var(--primary-50);
  background: var(--gradient-background);
  min-height: 100vh;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

/* === Focus pour Accessibilité === */
*:focus {
  outline: 2px solid var(--accent-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

*:focus:not(:focus-visible) {
  outline: none;
}

/* ==========================================================================
   3. Typographie 
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-light);
  line-height: 1.1;
  margin: 0;
  color: var(--primary-50);
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-light);
}

h2 {
  font-size: var(--text-4xl);
  font-weight: var(--font-normal);
}

h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-medium);
}

h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
}

p {
  margin: 0 0 var(--space-4) 0;
  color: var(--support-400);
  line-height: 1.7;
}

strong {
  color: var(--primary-50);
  font-weight: var(--font-semibold);
}

a {
  color: var(--accent-500);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--accent-400);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(0, 217, 255, 0.1);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  color: var(--accent-500);
  border: 1px solid rgba(0, 217, 255, 0.2);
}

/* ==========================================================================
   4. Layout & Container
   ========================================================================== */

.container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0;
    margin: 0;
    overflow: hidden !important;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* === Skip Link === */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--accent-500);
  color: var(--primary-900);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--font-semibold);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

/* ==========================================================================
   5. Ecrans de chargement
   ========================================================================== */

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-background);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-container {
  text-align: center;
  max-width: 400px;
  padding: var(--space-8);
}

.loading-logo {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-8);
  letter-spacing: -0.02em;
  animation: logoGlow 2s ease-in-out infinite alternate;
}

@keyframes logoGlow {
  0% {
    filter: drop-shadow(0 0 5px rgba(0, 217, 255, 0.3));
  }
  100% {
    filter: drop-shadow(0 0 20px rgba(0, 217, 255, 0.6));
  }
}

.loading-progress {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-6);
  position: relative;
}

.loading-progress::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.loading-bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  width: 0;
  transition: width var(--transition-base);
  position: relative;
  overflow: hidden;
}

.loading-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: progressGlow 1s infinite;
}

@keyframes progressGlow {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.loading-text {
  color: var(--support-400);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  font-weight: var(--font-medium);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* ==========================================================================
   6. Header & Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
  padding: var(--space-2) 0;
}

.header.scrolled {
  background: rgba(10, 10, 10, 0.95);
  box-shadow: var(--shadow-lg);
  padding: var(--space-1) 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .nav-container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .nav-container {
    padding: 0 var(--space-8);
  }
}

/* === Logo === */
.logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all var(--transition-fast);
  letter-spacing: -0.01em;
  position: relative;
}

.logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 10px rgba(0, 217, 255, 0.4));
}

.logo::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.logo:hover::after {
  transform: scaleX(1);
}

/* === Navigation Desktop === */
.nav-menu {
  display: none;
  list-style: none;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--support-400);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  letter-spacing: 0.02em;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 217, 255, 0.1);
  border-radius: var(--radius-md);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 1;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-500);
  transform: translateY(-1px);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--accent-500);
  border-radius: var(--radius-full);
}

/* === Toggle Menu Mobile === */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  z-index: var(--z-modal);
  position: relative;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(0, 217, 255, 0.1);
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--accent-500);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* === Overlay (superposition) Navigation Mobile [aidé par ChatGPT pour réussir l'overlay)  === */
.nav-overlay {
  position: fixed;
  top: 0;
  left: -100%;
  width: 85%;
  max-width: 400px;
  height: 100vh;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(30px);
  z-index: var(--z-modal);
  transition: left var(--transition-base);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .nav-overlay {
    display: none;
  }
}

.nav-overlay.active {
  left: 0;
}

.nav-mobile {
  padding: var(--space-24) var(--space-6) var(--space-8);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.nav-mobile-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.nav-mobile-link {
  color: var(--primary-50);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-mobile-link:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent-500);
  color: var(--accent-500);
  transform: translateX(var(--space-2));
}

.nav-mobile-footer h4 {
  color: var(--secondary-500);
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}

.social-links-mobile {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.social-links-mobile a {
  color: var(--support-400);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links-mobile a:hover {
  color: var(--accent-500);
  border-color: var(--accent-500);
  background: rgba(0, 217, 255, 0.1);
}

/* ==========================================================================
   7. Boutons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  user-select: none;
  letter-spacing: 0.02em;
  min-width: 120px;
  text-align: center;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-base);
}

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

.btn:focus {
  outline: 2px solid var(--accent-500);
  outline-offset: 3px;
}

/* === Variantes de Boutons === */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--primary-900);
  box-shadow: var(--shadow-md);
  font-weight: var(--font-bold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent-lg);
  color: var(--primary-900);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--primary-50);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-500);
  color: var(--accent-500);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--accent-500);
  border: 1px solid var(--accent-500);
}

.btn-outline:hover {
  background: var(--accent-500);
  color: var(--primary-900);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--accent-500);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent-500);
}

/* === Tailles de Boutons === */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  gap: var(--space-1);
  min-width: 80px;
}

.btn-lg {
  padding: var(--space-5) var(--space-8);
  font-size: var(--text-base);
  gap: var(--space-3);
  min-width: 160px;
}

/* === États de Boutons === */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  pointer-events: none;
}

.btn-loading {
  pointer-events: none;
}

.btn-loading .btn-text {
  opacity: 0;
}

.btn-loading .btn-loading {
  opacity: 1;
}

/* ==========================================================================
   8. Section Hero 
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 100px;
  background: var(--gradient-background);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: center;
  min-height: calc(100vh - 100px);
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
  }
}

.hero-content {
  text-align: center;
  z-index: 1;
}

@media (min-width: 1024px) {
  .hero-content {
    text-align: left;
  }
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-light);
  margin-bottom: var(--space-8);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: var(--text-5xl);
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: var(--text-6xl);
  }
}

@media (min-width: 1280px) {
  .hero-title {
    font-size: var(--text-7xl);
  }
}

.hero-title-line {
  display: block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  opacity: 0;
  transform: translateY(30px);
  animation: titleReveal 1s ease-out forwards;
}

.hero-title-line:nth-child(2) {
  animation-delay: 0.2s;
}

@keyframes titleReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--support-400);
  margin-bottom: var(--space-10);
  max-width: 600px;
  line-height: 1.6;
}

@media (min-width: 1024px) {
  .hero-subtitle {
    font-size: var(--text-xl);
    max-width: 700px;
  }
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-16);
}

@media (min-width: 640px) {
  .hero-cta {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .hero-cta {
    justify-content: flex-start;
  }
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (max-width: 480px) {
  .hero-stats {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: var(--space-8) auto 0;
  }
}

.stat-item {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  background: var(--gradient-card);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.1), transparent);
  transition: left 1s ease;
}

.stat-item:hover::before {
  left: 100%;
}

.stat-item:hover {
  background: rgba(0, 217, 255, 0.05);
  border-color: var(--accent-500);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  color: var(--accent-500);
  font-family: var(--font-display);
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--support-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: var(--font-semibold);
}

/* === Hero - Terminal === */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 450px;
  z-index: 1;
}

.hero-terminal {
  width: 100%;
  max-width: 550px;
  background: rgba(10, 10, 10, 0.95);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-2xl);
  backdrop-filter: blur(20px);
  overflow: hidden;
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition: transform var(--transition-slow);
}

.hero-terminal:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.terminal-controls {
  display: flex;
  gap: var(--space-2);
}

.terminal-control {
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
  cursor: pointer;
}

.terminal-control:hover {
  transform: scale(1.2);
}

.terminal-control.close {
  background: linear-gradient(135deg, #ff5f57, #ff4444);
}

.terminal-control.minimize {
  background: linear-gradient(135deg, #ffbd2e, #ffaa00);
}

.terminal-control.maximize {
  background: linear-gradient(135deg, #28ca42, #20aa30);
}

.terminal-title {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--support-400);
  font-weight: var(--font-medium);
}

.terminal-content {
  padding: var(--space-8);
  min-height: 250px;
  background: rgba(0, 0, 0, 0.2);
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.terminal-prompt {
  color: var(--accent-500);
  font-family: var(--font-mono);
  font-weight: var(--font-bold);
  font-size: var(--text-base);
}

.terminal-command {
  color: var(--primary-50);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
}

.terminal-cursor {
  color: var(--accent-500);
  font-family: var(--font-mono);
  font-weight: var(--font-bold);
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.terminal-output {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  margin-top: var(--space-6);
  line-height: 1.8;
}

.terminal-output div {
  margin-bottom: var(--space-2);
  opacity: 0;
  animation: fadeInOutput 0.8s ease-out forwards;
}

.terminal-output div:nth-child(1) { animation-delay: 1s; }
.terminal-output div:nth-child(2) { animation-delay: 1.3s; }
.terminal-output div:nth-child(3) { animation-delay: 1.6s; }

@keyframes fadeInOutput {
  to {
    opacity: 1;
  }
}

/* === Indicateur De Scroll  === */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: 2;
}

.scroll-indicator:hover {
  transform: translateX(-50%) translateY(-6px);
}

.scroll-text {
  display: block;
  font-size: var(--text-sm);
  color: var(--support-400);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: var(--font-semibold);
}

.scroll-arrow {
  width: 2px;
  height: 40px;
  background: var(--accent-500);
  margin: 0 auto;
  position: relative;
  animation: scrollBounce 2.5s infinite;
  border-radius: var(--radius-full);
}

.scroll-arrow::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: -4px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--accent-500);
  border-bottom: 2px solid var(--accent-500);
  transform: rotate(45deg);
  border-radius: 0 2px 0 0;
}

@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-8px);
  }
  60% {
    transform: translateY(-4px);
  }
}

/* ==========================================================================
   9. Disposition des sections (Layout)
   ========================================================================== */

section {
  padding: var(--space-32) 0;
  position: relative;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-24) 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-20);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-6);
  color: var(--accent-500);
  position: relative;
  font-weight: var(--font-medium);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-5xl);
  }
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--support-400);
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto;
}

/* ==========================================================================
   10. Section projets
   ========================================================================== */

.projects {
  background: rgba(255, 255, 255, 0.02);
  position: relative;
}

.projects::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 10% 20%, rgba(0, 217, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(255, 107, 53, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-20);
  flex-wrap: wrap;
  z-index: 1;
  position: relative;
}

.filter-btn {
  background: transparent;
  color: var(--support-400);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.filter-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(0, 217, 255, 0.1);
  transition: left var(--transition-base);
}

.filter-btn:hover::before,
.filter-btn.active::before {
  left: 0;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent-500);
  color: var(--accent-500);
  transform: translateY(-2px);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  z-index: 1;
  position: relative;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background: var(--gradient-card);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  transition: all var(--transition-base);
  backdrop-filter: blur(20px);
  position: relative;
  group: project;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.05) 0%, rgba(255, 107, 53, 0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.project-card:hover::before {
  opacity: 1;
}

.project-card:hover {
  transform: translateY(-12px);
  border-color: var(--accent-500);
  box-shadow: var(--shadow-accent-lg);
}

.project-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 107, 53, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--support-400);
}

.project-image > div {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  transition: transform var(--transition-base);
}

.project-card:hover .project-image > div {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 10, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  width: 56px;
  height: 56px;
  background: var(--accent-500);
  color: var(--primary-900);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: var(--text-lg);
  border: 2px solid var(--accent-500);
}

.project-link:hover {
  background: transparent;
  color: var(--accent-500);
  transform: scale(1.15);
  box-shadow: var(--shadow-accent);
}

.project-content {
  padding: var(--space-8);
}

.project-title {
  font-size: var(--text-xl);
  color: var(--accent-500);
  margin-bottom: var(--space-4);
  font-weight: var(--font-semibold);
  letter-spacing: -0.01em;
}

.project-description {
  color: var(--support-400);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.project-description strong {
  color: var(--primary-50);
  display: block;
  margin-bottom: var(--space-2);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.tech-tag {
  background: rgba(0, 217, 255, 0.1);
  color: var(--accent-500);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border: 1px solid rgba(0, 217, 255, 0.2);
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.tech-tag:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--accent-500);
  transform: scale(1.05);
}

/* === Variantes Tech Tags === */
.tech-tag.backend {
  background: rgba(0, 255, 136, 0.1);
  color: var(--success-500);
  border-color: rgba(0, 255, 136, 0.2);
}

.tech-tag.backend:hover {
  background: rgba(0, 255, 136, 0.2);
  border-color: var(--success-500);
}

.tech-tag.frontend {
  background: rgba(255, 107, 53, 0.1);
  color: var(--secondary-500);
  border-color: rgba(255, 107, 53, 0.2);
}

.tech-tag.frontend:hover {
  background: rgba(255, 107, 53, 0.2);
  border-color: var(--secondary-500);
}

.tech-tag.database {
  background: rgba(255, 210, 63, 0.1);
  color: var(--warning-500);
  border-color: rgba(255, 210, 63, 0.2);
}

.tech-tag.database:hover {
  background: rgba(255, 210, 63, 0.2);
  border-color: var(--warning-500);
}

.project-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .project-actions {
    flex-direction: column;
  }
}

.projects-footer {
  text-align: center;
  margin-top: var(--space-20);
  z-index: 1;
  position: relative;
}

/* ==========================================================================
   11. Section A Propos
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: start;
  margin-bottom: var(--space-20);
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr 2fr;
    gap: var(--space-20);
  }
}

.profile-card {
  background: var(--gradient-card);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  backdrop-filter: blur(20px);
  position: sticky;
  top: 120px;
  transition: all var(--transition-base);
}

.profile-card:hover {
  border-color: var(--accent-500);
  box-shadow: var(--shadow-accent);
}

.profile-image {
  width: 180px;
  height: 180px;
  margin: 0 auto var(--space-8);
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  color: var(--primary-900);
  border: 4px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.profile-image:hover {
  transform: scale(1.05);
  border-color: var(--accent-500);
}

.profile-name {
  font-size: var(--text-3xl);
  color: var(--accent-500);
  margin-bottom: var(--space-3);
  font-weight: var(--font-medium);
}

.profile-role {
  color: var(--support-400);
  margin-bottom: var(--space-10);
  line-height: 1.5;
  font-size: var(--text-base);
}

.profile-role strong {
  color: var(--primary-50);
  display: block;
  margin-top: var(--space-2);
}

.profile-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.stat {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
  text-align: center;
}

.stat:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent-500);
  transform: translateY(-2px);
}

.stat .stat-number {
  display: block;
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--accent-500);
  font-family: var(--font-display);
  margin-bottom: var(--space-1);
}

.stat .stat-label {
  font-size: var(--text-xs);
  color: var(--support-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: var(--font-semibold);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.about-text h3 {
  color: var(--accent-500);
  margin-bottom: var(--space-6);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.about-text p {
  color: var(--support-400);
  line-height: 1.7;
  font-size: var(--text-base);
}

/* === Skills Section === */
.skills-section {
  margin-top: var(--space-24);
}

.skills-title {
  text-align: center;
  font-size: var(--text-3xl);
  color: var(--accent-500);
  margin-bottom: var(--space-16);
  font-weight: var(--font-medium);
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skill-category {
  background: var(--gradient-card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.05), transparent);
  transition: left var(--transition-slow);
}

.skill-category:hover::before {
  left: 100%;
}

.skill-category:hover {
  transform: translateY(-6px);
  border-color: var(--accent-500);
  box-shadow: var(--shadow-accent);
}

.skill-category-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--accent-500);
  margin-bottom: var(--space-6);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.skill-tag {
  background: rgba(0, 217, 255, 0.1);
  color: var(--accent-500);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  border: 1px solid rgba(0, 217, 255, 0.2);
  transition: all var(--transition-fast);
  font-weight: var(--font-medium);
}

.skill-tag:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--accent-500);
  transform: scale(1.05);
}

/* ==========================================================================
   12. Section Contact 
   ========================================================================== */

.contact {
  background: rgba(255, 255, 255, 0.02);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 30% 70%, rgba(0, 217, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(255, 107, 53, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  z-index: 1;
  position: relative;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
  }
}

.contact-form-title,
.contact-info-title {
  color: var(--accent-500);
  margin-bottom: var(--space-10);
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  color: var(--support-400);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  transition: color var(--transition-fast);
}

.form-group.focused .form-label {
  color: var(--accent-500);
}

.form-input,
.form-textarea {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  color: var(--primary-50);
  font-size: var(--text-base);
  font-family: var(--font-body);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--support-400);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.form-error {
  color: var(--error-500);
  font-size: var(--text-sm);
  min-height: 20px;
  font-weight: var(--font-medium);
}

.form-input.error,
.form-textarea.error {
  border-color: var(--error-500);
  background: rgba(255, 107, 107, 0.1);
}

.form-message {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  display: none;
}

.form-message.success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--success-500);
  border: 1px solid rgba(0, 255, 136, 0.3);
}

.form-message.error {
  background: rgba(255, 107, 107, 0.1);
  color: var(--error-500);
  border: 1px solid rgba(255, 107, 107, 0.3);
}

.btn-submit {
  margin-top: var(--space-4);
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--gradient-card);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
  backdrop-filter: blur(20px);
}

.contact-item:hover {
  background: rgba(0, 217, 255, 0.05);
  border-color: var(--accent-500);
  transform: translateY(-2px);
}

.contact-icon {
  width: 28px;
  height: 28px;
  color: var(--secondary-500);
  flex-shrink: 0;
  margin-top: 2px;
  font-size: var(--text-lg);
}

.contact-details h4 {
  color: var(--secondary-500);
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}

.contact-details a,
.contact-details span {
  color: var(--support-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.contact-details a:hover {
  color: var(--accent-500);
}

.availability-status {
  color: var(--success-500);
  font-weight: var(--font-semibold);
}

.social-section {
  margin-top: var(--space-10);
}

.social-title {
  color: var(--accent-500);
  margin-bottom: var(--space-6);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--support-400);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: all var(--transition-base);
  flex: 1;
  justify-content: center;
  min-width: 120px;
  font-weight: var(--font-medium);
  backdrop-filter: blur(20px);
}

.social-link:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent-500);
  color: var(--accent-500);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

/* ==========================================================================
   13. Footer
   ========================================================================== */

.footer {
  background: var(--primary-900);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-20) 0 var(--space-10);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-16);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr repeat(3, 1fr);
  }
}

.footer-brand {
  max-width: 500px;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
  letter-spacing: -0.01em;
}

.footer-description {
  color: var(--support-400);
  line-height: 1.6;
  font-size: var(--text-base);
}

.footer-description strong {
  color: var(--primary-50);
  display: block;
  margin-bottom: var(--space-2);
}

.footer-links h4 {
  color: var(--accent-500);
  margin-bottom: var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-links a {
  color: var(--support-400);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  padding: var(--space-1) 0;
  position: relative;
}

.footer-links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-500);
  transition: width var(--transition-base);
}

.footer-links a:hover::before {
  width: 100%;
}

.footer-links a:hover {
  color: var(--accent-500);
  transform: translateX(var(--space-2));
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  padding-top: var(--space-10);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  color: var(--support-400);
  font-size: var(--text-sm);
  margin: 0;
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  width: 48px;
  height: 48px;
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--support-400);
  transition: all var(--transition-base);
  font-size: var(--text-lg);
  backdrop-filter: blur(20px);
}

.footer-social a:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--accent-500);
  color: var(--accent-500);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

/* ==========================================================================
   14. Composants utilitaires
   ========================================================================== */

/* === Bouton Back to Top === */
.back-to-top {
  position: fixed;
  bottom: var(--space-10);
  right: var(--space-10);
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  color: var(--primary-900);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-accent-lg);
  scale: 1.1;
}

/* === Curseur personnalisé === */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: var(--z-tooltip);
  mix-blend-mode: difference;
  transition: all var(--transition-fast);
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-500);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.cursor-outline {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent-500);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  opacity: 0.3;
}

.cursor.hover .cursor-dot {
  transform: scale(2);
  background: var(--secondary-500);
}

.cursor.hover .cursor-outline {
  transform: translate(-50%, -50%) scale(1.5);
  border-color: var(--secondary-500);
  opacity: 0.6;
}

@media (hover: none) {
  .cursor {
    display: none;
  }
}

/* ==========================================================================
   15. Animations & Keyframes
   ========================================================================== */

/* === AOS Base === */
[data-aos] {
  opacity: 0;
  transition-property: opacity, transform;
  transition-duration: 0.8s;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: none;
}

[data-aos="fade-up"] {
  transform: translateY(40px);
}

[data-aos="fade-down"] {
  transform: translateY(-40px);
}

[data-aos="fade-left"] {
  transform: translateX(40px);
}

[data-aos="fade-right"] {
  transform: translateX(-40px);
}

[data-aos="zoom-in"] {
  transform: scale(0.9);
}

[data-aos="zoom-out"] {
  transform: scale(1.1);
}

/* === Custom Keyframes === */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(0, 217, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.6);
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

/* === Animation utilitaires === */
.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite alternate;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ======================================================================================
   16. Responsive Design (j'ai demandé les bonnes tailles pour les Breakpoints à ChatGPT)
   ====================================================================================== */

/* === Mobile First === */
@media (max-width: 480px) {
  :root {
    --text-7xl: 3.5rem;
    --text-6xl: 3rem;
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
    --text-3xl: 1.75rem;
    --space-32: 6rem;
    --space-24: 4rem;
    --space-20: 3rem;
    --space-16: 2.5rem;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .hero-cta {
    gap: var(--space-3);
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .project-filters {
    gap: var(--space-2);
  }

  .filter-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
  }

  .social-links {
    flex-direction: column;
  }

  .back-to-top {
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
  }
}

/* === Tablette === */
@media (min-width: 768px) and (max-width: 1023px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .profile-card {
    position: static;
    max-width: 500px;
    margin: 0 auto;
  }
}

/* === Desktop === */
@media (min-width: 1024px) {
  .hero-visual {
    min-height: 500px;
  }

  .hero-terminal {
    max-width: 600px;
  }
}

/* === Desktop Large === */
@media (min-width: 1440px) {
  .container {
    padding: 0 var(--space-16);
  }

  section {
    padding: var(--space-32) 0;
  }
}

/* ==========================================================================
   17. Styles d'impression
   ========================================================================== */

@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    background: white !important;
  }

  .header,
  .nav-overlay,
  .back-to-top,
  .cursor,
  .loading-screen,
  .scroll-indicator {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding-top: 0;
  }

  .btn {
    border: 1px solid black !important;
  }

  a {
    color: black !important;
    text-decoration: underline;
  }

  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 10pt;
  }
}

/* ==========================================================================
   18. Accessibilité et contraste élevé
   ========================================================================== */

@media (prefers-contrast: high) {
  :root {
    --primary-900: #000000;
    --primary-50: #ffffff;
    --accent-500: #0099cc;
    --secondary-500: #ff4400;
    --support-400: #666666;
  }

  .btn,
  .project-card,
  .skill-category,
  .contact-item {
    border-width: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .cursor {
    display: none;
  }

  [data-aos] {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* === Focus Visible === */
.btn:focus-visible,
.nav-link:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible {
  outline: 2px solid var(--accent-500);
  outline-offset: 3px;
}

/* === Pour lecteurs d'écran uniquement === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   19. Performance Optimisations
   ========================================================================== */

/* === Acceleration === */
.project-card,
.btn,
.nav-link,
.hero-terminal,
.skill-category,
.contact-item {
  will-change: transform;
  transform: translateZ(0);
}

/* === Contenin les Layout === */
.project-card,
.skill-category,
.contact-item,
.stat-item {
  contain: layout paint;
}

/* ==========================================================================
   20. Dark Mode & Theme Variants
   ========================================================================== */

@media (prefers-color-scheme: light) {
  /* Conserver le thème sombre comme design principal */
}

/* === Utilitaire De Theme == */
.theme-transition {
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ==========================================================================
   21. Etat des Composants & Utilitaires
   ========================================================================== */

/* === Etat au chargement === */
.loading {
  pointer-events: none;
  opacity: 0.6;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border: 2px solid var(--accent-500);
  border-top-color: transparent;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

/* === Etat erreur === */
.error {
  border-color: var(--error-500) !important;
  background: rgba(255, 107, 107, 0.1) !important;
}

/* === Etat Succès  === */
.success {
  border-color: var(--success-500) !important;
  background: rgba(0, 255, 136, 0.1) !important;
}

/* === Etat Disactivé === */
.disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

/* === Etat Actif === */
.active {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--accent-500);
  color: var(--accent-500);
}

/* === Elements Masqués === */
.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* === Système De Notification === */
.notification {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-6);
  z-index: var(--z-tooltip);
  max-width: 400px;
  backdrop-filter: blur(20px);
  animation: slideInRight 0.4s ease-out;
  box-shadow: var(--shadow-xl);
}

.notification.success {
  border-color: var(--success-500);
  background: rgba(0, 255, 136, 0.1);
}

.notification.error {
  border-color: var(--error-500);
  background: rgba(255, 107, 107, 0.1);
}

.notification.info {
  border-color: var(--accent-500);
  background: rgba(0, 217, 255, 0.1);
}

/* ==========================================================================
   FIN DU CSS 
   ========================================================================== */