/**
 * ═══════════════════════════════════════════════════════════════════════════
 * PORTFOLIO MATTIA PARRINELLO - STYLES PERSONNALISÉS
 * ═══════════════════════════════════════════════════════════════════════════
 * 
 * Ce fichier contient les styles personnalisés qui complètent Tailwind CSS.
 * Chaque section est documentée pour faciliter la maintenance.
 * 
 * Structure :
 * 1. Variables CSS
 * 2. Styles de base
 * 3. Navigation
 * 4. Hero Section
 * 5. Composants réutilisables
 * 6. Animations & Transitions
 * 7. Responsive adjustments
 */

/* ═══════════════════════════════════════════════════════════════════════════
   1. VARIABLES CSS
   Centralise les valeurs pour faciliter les modifications
═══════════════════════════════════════════════════════════════════════════ */
:root {
  --primary: #0f172a;
  --secondary: #1e293b;
  --accent: #ec4899;
  --accent-hover: #db2777;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --transition-fast: 150ms;
  --transition-normal: 300ms;
  --transition-slow: 500ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ═══════════════════════════════════════════════════════════════════════════
   2. STYLES DE BASE
   Reset et styles fondamentaux
═══════════════════════════════════════════════════════════════════════════ */

/* Smooth scroll pour les ancres */
html {
  scroll-behavior: smooth;
}

/* Amélioration du scroll sur mobile */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Sélection de texte personnalisée */
::selection {
  background-color: var(--accent);
  color: white;
}

/* ═══════════════════════════════════════════════════════════════════════════
   3. NAVIGATION
   Styles pour la barre de navigation fixe
═══════════════════════════════════════════════════════════════════════════ */

/* Effet de blur au scroll - géré par JS */
.nav-scrolled {
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Liens de navigation avec micro-interaction */
.nav-link {
  position: relative;
  color: #94a3b8;
  font-weight: 500;
  transition: color var(--transition-normal) ease;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-normal) var(--ease-out-expo);
}

/* Hover : la ligne s'étend sous le texte */
.nav-link:hover {
  color: white;
}

.nav-link:hover::after {
  width: 100%;
}

/* Menu hamburger */
.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: white;
  transition: all var(--transition-normal) ease;
}

/* Animation du menu hamburger lors de l'ouverture */
.menu-open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.menu-open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Menu mobile */
.mobile-menu {
  max-height: 0;
  overflow: hidden;
  background-color: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: max-height var(--transition-slow) var(--ease-out-expo);
}

.mobile-menu.active {
  max-height: 400px;
}

.mobile-nav-link {
  display: block;
  color: #94a3b8;
  font-size: 1.125rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  transition: color var(--transition-normal) ease;
}

.mobile-nav-link:hover {
  color: var(--accent);
}

/* ═══════════════════════════════════════════════════════════════════════════
   4. HERO SECTION
   Styles pour la section d'accueil
═══════════════════════════════════════════════════════════════════════════ */

/* Effet de glow subtil derrière le hero */
.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(236, 72, 153, 0.15) 0%,
    transparent 70%
  );
  pointer-events: none;
  animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%,
  100% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.8;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

/* Dégradé de texte pour le nom */
.gradient-text {
  background: linear-gradient(
    135deg,
    var(--accent) 0%,
    #8b5cf6 50%,
    #ec4899 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══════════════════════════════════════════════════════════════════════════
   5. COMPOSANTS RÉUTILISABLES
   Boutons, cartes et autres éléments UI
═══════════════════════════════════════════════════════════════════════════ */

/* --- BOUTONS --- */

/* Bouton primaire avec micro-interaction */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  background-color: var(--accent);
  color: white;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all var(--transition-normal) ease;
  position: relative;
  overflow: hidden;
}

/* Effet de brillance au hover */
.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left var(--transition-slow) ease;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(236, 72, 153, 0.5);
}

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

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

/* Bouton secondaire avec bordure */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  background-color: transparent;
  color: white;
  font-weight: 600;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  transition: all var(--transition-normal) ease;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

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

/* --- CARTES STATISTIQUES --- */
.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  background-color: rgba(30, 41, 59, 0.5);
  border-radius: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-normal) ease;
}

.stat-card:hover {
  border-color: rgba(236, 72, 153, 0.3);
  transform: translateY(-4px);
}

/* --- CARTES COMPÉTENCES (icônes) --- */
.skill-icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: rgba(30, 41, 59, 0.3);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-normal) var(--ease-out-expo);
  cursor: default;
}

/* Hover : léger lift et bordure colorée */
.skill-icon-card:hover {
  background-color: rgba(30, 41, 59, 0.6);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.3);
}

/* --- CARTES PROJETS --- */
.project-card {
  background-color: var(--secondary);
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-normal) var(--ease-out-expo);
}

/* Hover : lift et ombre */
.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.4);
  border-color: rgba(236, 72, 153, 0.2);
}

/* Overlay qui apparaît au hover sur l'image */
.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal) ease;
}

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

/* Boutons dans l'overlay */
.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: white;
  color: var(--primary);
  border-radius: 50%;
  transition: all var(--transition-fast) ease;
  transform: translateY(20px);
  opacity: 0;
}

.project-card:hover .project-link {
  transform: translateY(0);
  opacity: 1;
}

.project-card:hover .project-link:nth-child(1) {
  transition-delay: 50ms;
}

.project-card:hover .project-link:nth-child(2) {
  transition-delay: 100ms;
}

.project-link:hover {
  background-color: var(--accent);
  color: white;
  transform: scale(1.1);
}

/* Tags de technologies */
.tech-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: rgba(236, 72, 153, 0.1);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
  transition: all var(--transition-fast) ease;
}

.tech-tag:hover {
  background-color: rgba(236, 72, 153, 0.2);
}

/* --- BADGES STACK --- */
.stack-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  background-color: rgba(30, 41, 59, 0.3);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-normal) var(--ease-out-expo);
  cursor: default;
  color: var(--badge-color, #94a3b8);
}

/* Hover : couleur et effet */
.stack-badge:hover {
  background-color: rgba(30, 41, 59, 0.6);
  border-color: var(--badge-color);
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.3);
}

.stack-badge:hover svg {
  filter: drop-shadow(0 0 8px var(--badge-color));
}

/* --- CARTES CONTACT --- */
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  background-color: rgba(30, 41, 59, 0.3);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-normal) var(--ease-out-expo);
  text-align: center;
  gap: 0.5rem;
}

.contact-card:hover {
  background-color: rgba(30, 41, 59, 0.6);
  border-color: rgba(236, 72, 153, 0.3);
  transform: translateY(-6px);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  transition: all var(--transition-normal) ease;
  margin-bottom: 0.5rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   6. ANIMATIONS & TRANSITIONS
   Keyframes et classes d'animation
═══════════════════════════════════════════════════════════════════════════ */

/* Animation d'entrée fade + slide up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out-expo) forwards;
}

/* Animation pour les éléments au scroll (gérée par JS) */
.scroll-animate {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s var(--ease-out-expo);
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Animation de fade in depuis la gauche */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Animation de fade in depuis la droite */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Animation de scale */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Bounce léger pour l'indicateur de scroll */
@keyframes bounce {
  0%,
  100% {
    transform: translateY(0) translateX(-50%);
  }
  50% {
    transform: translateY(-10px) translateX(-50%);
  }
}

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

/* Animation des stats GitHub - Déploiement en cascade */
@keyframes stats-reveal {
  from {
    opacity: 0;
    transform: translateY(-15px) scaleY(0);
    transform-origin: top;
  }
  to {
    opacity: 1;
    transform: translateY(0) scaleY(1);
    transform-origin: top;
  }
}

@keyframes stats-chip-slide {
  from {
    opacity: 0;
    transform: translateX(-12px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes stats-row-fade {
  from {
    opacity: 0;
    transform: translateX(8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.stats-reveal .stats-tile {
  opacity: 0;
  animation: stats-reveal 500ms var(--ease-out-expo) forwards;
  will-change: transform, opacity;
}

.stats-reveal .stats-chip {
  opacity: 0;
  animation: stats-chip-slide 350ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
  will-change: transform, opacity;
}

.stats-reveal .stats-row {
  opacity: 0;
  animation: stats-row-fade 380ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
  will-change: transform, opacity;
}

/* Animation de redimensionnement de la carte */
@keyframes card-scale {
  0% {
    transform: scale(0.98);
    opacity: 0.9;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

#github-stats-content {
  transition:
    max-height 450ms cubic-bezier(0.16, 1, 0.3, 1),
    padding 450ms cubic-bezier(0.16, 1, 0.3, 1);
}

#github-stats-content.stats-toggling {
  animation: card-scale 450ms var(--ease-out-expo) forwards;
}

/* ═══════════════════════════════════════════════════════════════════════════
   7. RESPONSIVE ADJUSTMENTS
   Ajustements pour différentes tailles d'écran
═══════════════════════════════════════════════════════════════════════════ */

/* Tablette */
@media (max-width: 768px) {
  .hero-glow {
    width: 400px;
    height: 400px;
  }

  .skill-icon-card {
    padding: 1rem;
  }

  .stack-badge {
    padding: 1rem 0.75rem;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .hero-glow {
    width: 300px;
    height: 300px;
  }

  .project-overlay {
    opacity: 1;
    background: rgba(15, 23, 42, 0.7);
  }

  .project-link {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Préférence pour les animations réduites */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   8. UTILITAIRES PERSONNALISÉS
   Classes utilitaires supplémentaires
═══════════════════════════════════════════════════════════════════════════ */

/* Hide scrollbar but keep functionality */
.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

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

/* Transition par défaut pour les liens */
a {
  transition: color var(--transition-normal) ease;
}

/* Image responsive avec object-fit */
.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ═══════════════════════════════════════════════════════════════════════════
   9. TIMELINE / PARCOURS
   Styles pour la frise chronologique
═══════════════════════════════════════════════════════════════════════════ */

/* Point sur la timeline */
.timeline-dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(236, 72, 153, 0.2);
  z-index: 10;
  transition: all var(--transition-normal) ease;
}

/* Position alternée sur desktop */
@media (min-width: 768px) {
  .timeline-dot {
    left: auto;
    right: -8px;
    transform: translateX(50%);
  }
}

/* Hover sur le dot */
.timeline-item:hover .timeline-dot {
  transform: scale(1.3);
  box-shadow: 0 0 0 8px rgba(236, 72, 153, 0.3);
}

@media (min-width: 768px) {
  .timeline-item:hover .timeline-dot {
    transform: translateX(50%) scale(1.3);
  }
}

/* Carte de la timeline */
.timeline-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: all var(--transition-normal) var(--ease-out-expo);
}

.timeline-card:hover {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(236, 72, 153, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.3);
}

/* Date de la timeline */
.timeline-date {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(236, 72, 153, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}

/* Animation d'entrée pour les items de timeline */
.timeline-item {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s var(--ease-out-expo) forwards;
}

.timeline-item:nth-child(1) {
  animation-delay: 0.1s;
}
.timeline-item:nth-child(2) {
  animation-delay: 0.2s;
}
.timeline-item:nth-child(3) {
  animation-delay: 0.3s;
}
.timeline-item:nth-child(4) {
  animation-delay: 0.4s;
}

/* ═══════════════════════════════════════════════════════════════════════════
   10. EASTER EGGS STYLES
   Styles pour les easter eggs
═══════════════════════════════════════════════════════════════════════════ */

/* Animation de spin pour le logo */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Toast notification easter egg */
.easter-toast {
  font-family: "Inter", system-ui, sans-serif;
}

/* Matrix canvas fade */
#matrix-canvas {
  animation: matrixFadeIn 1s ease forwards;
}

@keyframes matrixFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 0.15;
  }
}