/* ============================================
   FICHIER CSS - style.css
   Portfolio Professionnel
   ============================================ */

/* ============================================
   VARIABLES CSS (Couleurs et valeurs réutilisables)
   ============================================ */
:root {
  /* Couleurs principales */
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #ec4899;
  
  /* Couleurs de fond */
  --bg-color: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #334155;
  
  /* Couleurs de texte */
  --text-color: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-dark: #1e293b;
  
  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Tailles de police */
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Largeur maximale du contenu */
  --max-width: 1200px;
}

/* ============================================
   RESET CSS
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ============================================
   STYLES GÉNÉRAUX
   ============================================ */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ============================================
   CONTENEUR PRINCIPAL
   ============================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  width: 100%;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--spacing-xl) 0;
  min-height: auto;
}

.section__title {
  font-size: var(--font-size-3xl);
  color: var(--text-color);
  text-align: center;
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 2px;
}

/* ============================================
   EN-TÊTE / NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) 0;
  transition: var(--transition-normal);
}

.header--scrolled {
  padding: var(--spacing-xs) 0;
  box-shadow: var(--shadow-lg);
}

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

.nav__logo {
  z-index: 1001;
}

.nav__title {
  font-size: var(--font-size-xl);
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

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

.nav__menu {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 6px;
}

.nav__link:hover {
  color: var(--primary-color);
  background-color: rgba(99, 102, 241, 0.1);
}

.nav__link--active {
  color: var(--primary-color);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  background: transparent;
  border: none;
  padding: 5px;
}

.nav__toggle-icon {
  width: 25px;
  height: 3px;
  background-color: var(--text-color);
  border-radius: 2px;
  transition: var(--transition-fast);
  display: block;
}

.nav__toggle--active .nav__toggle-icon:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
}

.nav__toggle--active .nav__toggle-icon:nth-child(2) {
  opacity: 0;
}

.nav__toggle--active .nav__toggle-icon:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
}

/* ============================================
   SECTION HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

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

.hero__img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid var(--primary-color);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-xl);
  animation: fadeInDown 1s ease-out;
}

.hero__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero__name {
  color: var(--primary-color);
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.6s both;
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   BOUTONS
   ============================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition-normal);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: var(--shadow-md);
}

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

.btn--secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn--secondary:hover {
  background-color: var(--primary-color);
  color: white;
}

/* ============================================
   SECTION À PROPOS
   ============================================ */
.about {
  background-color: var(--bg-secondary);
}

.about__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.about__paragraph {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  line-height: 1.8;
}

.about__info {
  background-color: var(--bg-card);
  padding: var(--spacing-md);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.about__subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.about__list {
  list-style: none;
}

.about__item {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.about__item:last-child {
  border-bottom: none;
}

/* ============================================
   SECTION COMPÉTENCES
   ============================================ */
.skills {
  background-color: var(--bg-color);
}

.skill-category {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.skill-category__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
}

.skill-category__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.skill-box {
  background-color: var(--bg-card);
  padding: var(--spacing-md);
  border-radius: 8px;
  transition: var(--transition-normal);
}

.skill-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skill-box__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.skill-list {
  list-style: none;
}

.skill-list--columns {
  column-count: 2;
  column-gap: var(--spacing-md);
}

.skill-item {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 20px;
}

.skill-item::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* ============================================
   SECTION CERTIFICATIONS
   ============================================ */
.certifications {
  background-color: var(--bg-secondary);
}

.certifications__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.cert-card {
  background-color: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.cert-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.cert-card__img-container {
  height: 200px;
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.cert-card__img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.cert-card__content {
  padding: var(--spacing-md);
}

.cert-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
}

.cert-card__info {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

.cert-card__description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   SECTION PROJETS
   ============================================ */
.projects {
  background-color: var(--bg-color);
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--bg-card);
  color: var(--text-secondary);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-fast);
  font-weight: 500;
}

.filter-btn:hover {
  background-color: var(--primary-color);
  color: white;
}

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

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

.project-card {
  background-color: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  opacity: 1;
  transform: scale(1);
}

.project-card--hidden {
  display: none;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.project-card__img-container {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.project-card:hover .project-card__img {
  transform: scale(1.1);
}

.project-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(99, 102, 241, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  opacity: 0;
  transition: var(--transition-normal);
}

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

.project-card__link {
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: white;
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  transition: var(--transition-fast);
}

.project-card__link:hover {
  background-color: var(--accent-color);
  color: white;
}

.project-card__content {
  padding: var(--spacing-md);
}

.project-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
}

.project-card__description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.project-card__tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.tag {
  padding: 4px 12px;
  background-color: rgba(99, 102, 241, 0.2);
  color: var(--primary-color);
  border-radius: 4px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ============================================
   SECTION CONTACT
   ============================================ */
.contact {
  background-color: var(--bg-secondary);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
}

.contact__subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.contact__list {
  list-style: none;
}

.contact__item {
  padding: var(--spacing-sm) 0;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact__item:last-child {
  border-bottom: none;
}

.contact__item a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.contact__form {
  background-color: var(--bg-card);
  padding: var(--spacing-md);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
}

.form__group {
  margin-bottom: var(--spacing-md);
}

.form__label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-color);
  font-weight: 500;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  border: 2px solid transparent;
  border-radius: 8px;
  color: var(--text-color);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background-color: var(--bg-color);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
  color: var(--text-color);
}

.footer__subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.footer__description {
  color: var(--text-secondary);
}

.footer__links {
  list-style: none;
}

.footer__link {
  display: inline-block;
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer__link:hover {
  color: var(--primary-color);
  padding-left: 10px;
}

.footer__social {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  border-radius: 50%;
  background-color: transparent;
}

.footer__social-link:hover {
  color: var(--primary-color);
  background-color: rgba(99, 102, 241, 0.1);
  transform: translateY(-3px);
}

.footer__social-link svg {
  width: 24px;
  height: 24px;
  transition: var(--transition-fast);
}

.footer__social-link:hover svg {
  transform: scale(1.1);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* ============================================
   BOUTON RETOUR EN HAUT
   ============================================ */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  text-decoration: none;
  font-size: 24px;
  font-weight: bold;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
  z-index: 999;
}

.scroll-top--visible {
  opacity: 1;
  pointer-events: all;
}

.scroll-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   RESPONSIVE DESIGN - TABLETTES
   ============================================ */
@media screen and (max-width: 768px) {
  :root {
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
  }
  
  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: var(--bg-secondary);
    flex-direction: column;
    padding: 100px var(--spacing-md) var(--spacing-md);
    box-shadow: var(--shadow-xl);
    transition: var(--transition-normal);
  }
  
  .nav__menu--active {
    right: 0;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .about__content,
  .contact__content {
    grid-template-columns: 1fr;
  }
  
  .skill-list--columns {
    column-count: 1;
  }
  
  .hero__buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

/* ============================================
   RESPONSIVE DESIGN - SMARTPHONES
   ============================================ */
@media screen and (max-width: 480px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.25rem;
    --spacing-xl: 3rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero__img {
    width: 150px;
    height: 150px;
  }
  
  .nav__menu {
    width: 85%;
  }
  
  .project-filters {
    flex-direction: column;
  }
  
  .filter-btn {
    width: 100%;
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
  }
  
  .scroll-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 20px;
  }
  
  .footer__social {
    gap: 1rem;
  }
  
  .footer__social-link {
    width: 36px;
    height: 36px;
  }
  
  .footer__social-link svg {
    width: 20px;
    height: 20px;
  }
}

/* ============================================
   ANIMATIONS UTILITAIRES
   ============================================ */
.fade-in {
  animation: fadeIn 0.6s ease-in;
}

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

.slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ============================================
   CLASSES UTILITAIRES
   ============================================ */
.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ============================================
   ACCESSIBILITÉ
   ============================================ */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

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

/* ============================================
   IMPRESSION
   ============================================ */
@media print {
  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
}

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