/* ========================================
   STYLES PRINCIPAUX DU PORTFOLIO
   ======================================== */

/* Variables CSS pour la cohérence du design */
:root {
  /* Couleurs principales */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;

  /* Couleurs de texte */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;

  /* Couleurs de fond */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-dark: #0f172a;
  --bg-card: #ffffff;

  /* Couleurs d'état */
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;

  /* Nouvelles variables pour les effets visuels */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --particle-color: rgba(59, 130, 246, 0.1);

  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1),
    0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Bordures */
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-color: #e2e8f0;

  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Typographie */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Reset et styles de base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* Container principal */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================================
   HEADER ET NAVIGATION
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.navbar-brand .brand-link {
  text-decoration: none;
  color: var(--primary-color);
  font-weight: 800;
  font-size: var(--font-size-2xl);
  transition: var(--transition-fast);
  text-shadow: 0 2px 4px rgba(37, 99, 235, 0.1);
}

.navbar-brand .brand-link:hover {
  color: var(--primary-dark);
  transform: scale(1.05);
  text-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition-fast);
}

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

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.admin-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
}

.admin-link:hover {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
}

/* Menu mobile */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger-line {
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

/* ========================================
   BOUTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: var(--text-white);
  border: none;
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
  background-color: transparent;
  color: rgba(255, 255, 255, 0.9);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

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

/* ========================================
   SECTIONS GÉNÉRALES
   ======================================== */

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   SECTION HERO
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 50%,
      rgba(59, 130, 246, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(139, 92, 246, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 20%,
      rgba(37, 99, 235, 0.1) 0%,
      transparent 50%
    );
  animation: gradientShift 15s ease infinite;
  z-index: 0;
}

.hero::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: repeating-linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.01) 0px,
    rgba(255, 255, 255, 0.01) 1px,
    transparent 1px,
    transparent 50px
  );
  animation: gridMove 20s linear infinite;
  z-index: 1;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 50%, #c7d2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.5));
  animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
  0%,
  100% {
    filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.5));
  }
  50% {
    filter: drop-shadow(0 0 50px rgba(139, 92, 246, 0.7));
  }
}

.title-line {
  display: block;
}

.title-line.highlight {
  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 50%, #fff176 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.8));
}

.hero-description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container {
  position: relative;
  width: 300px;
  height: 300px;
}

.profile-image {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.6),
    0 0 100px rgba(99, 102, 241, 0.4);
  position: relative;
  z-index: 2;
  animation: profileGlow 3s ease-in-out infinite;
  border: 4px solid rgba(255, 255, 255, 0.2);
}

.profile-image:not([src]) {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  color: var(--text-white);
}

@keyframes profileGlow {
  0%,
  100% {
    box-shadow: 0 0 60px rgba(139, 92, 246, 0.6),
      0 0 100px rgba(99, 102, 241, 0.4);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 80px rgba(139, 92, 246, 0.8),
      0 0 120px rgba(99, 102, 241, 0.6);
    transform: scale(1.02);
  }
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.floating-element {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--accent-color), var(--primary-color));
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.element-1 {
  width: 60px;
  height: 60px;
  top: 20%;
  left: -10%;
  animation-delay: 0s;
}

.element-2 {
  width: 40px;
  height: 40px;
  top: 60%;
  right: -5%;
  animation-delay: 2s;
}

.element-3 {
  width: 80px;
  height: 80px;
  bottom: 10%;
  left: 10%;
  animation-delay: 4s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

/* ========================================
   SECTION COMPÉTENCES
   ======================================== */

.skills {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.skill-category {
  background-color: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

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

.category-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.category-icon {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
}

.category-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-name {
  font-weight: 500;
  color: var(--text-primary);
}

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

.skill-bar {
  height: 8px;
  background-color: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--primary-light)
  );
  border-radius: 4px;
  width: 0;
  transition: width 1s ease-in-out;
}

.job-search {
  background-color: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.search-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.search-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.search-tags {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.tag {
  background-color: var(--primary-color);
  color: var(--text-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ========================================
   SECTION PROJETS
   ======================================== */

.projects {
  padding: var(--spacing-3xl) 0;
}

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

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--border-color);
  background-color: transparent;
  color: var(--text-secondary);
  border-radius: 25px;
  cursor: pointer;
  transition: var(--transition-fast);
  font-weight: 500;
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

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

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

.project-image {
  position: relative;
  height: 200px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--border-color));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.project-thumbnail:hover {
  transform: scale(1.05);
}

/* Image de profil */
.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  transition: transform 0.3s ease;
}

/* ========================================
   EFFETS VISUELS ET PARTICULES
   ======================================== */

/* Conteneur des particules */
.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

/* Particules individuelles */
.particle {
  position: absolute;
  background: var(--particle-color);
  border-radius: 50%;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
}

.particle:nth-child(odd) {
  animation-duration: 8s;
  animation-delay: -2s;
}

.particle:nth-child(even) {
  animation-duration: 10s;
  animation-delay: -4s;
}

/* Animation des particules */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.1;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 0.3;
  }
}

/* Effet de parallaxe pour les particules */
.particle:nth-child(1) {
  animation-delay: 0s;
}
.particle:nth-child(2) {
  animation-delay: 1s;
}
.particle:nth-child(3) {
  animation-delay: 2s;
}
.particle:nth-child(4) {
  animation-delay: 3s;
}
.particle:nth-child(5) {
  animation-delay: 4s;
}
.particle:nth-child(6) {
  animation-delay: 5s;
}

/* Dégradés de fond pour les sections */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
  animation: grain 20s linear infinite;
}

@keyframes grain {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(-100px, -100px);
  }
}

/* Effets de survol améliorés */
.project-card {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.project-card::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 0.5s;
}

.project-card:hover::before {
  left: 100%;
}

.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Animation d'apparition des éléments */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in-delay-1 {
  animation-delay: 0.2s;
}
.fade-in-delay-2 {
  animation-delay: 0.4s;
}
.fade-in-delay-3 {
  animation-delay: 0.6s;
}
.fade-in-delay-4 {
  animation-delay: 0.8s;
}

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

/* Effet de typing pour le titre */
.typing-effect {
  overflow: hidden;
  border-right: 2px solid var(--primary-color);
  white-space: nowrap;
  animation: typing 3s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink-caret {
  from,
  to {
    border-color: transparent;
  }
  50% {
    border-color: var(--primary-color);
  }
}

/* Effet de pulsation pour les boutons */
.btn-pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

/* Effet de brillance pour les cartes */
.shine-effect {
  position: relative;
  overflow: hidden;
}

.shine-effect::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  transition: left 0.6s;
}

.shine-effect:hover::after {
  left: 100%;
}

/* Effet de flottement pour les icônes */
.floating-icon {
  animation: floatIcon 3s ease-in-out infinite;
}

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

/* Dégradé animé pour le texte */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 50%, #e0f2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 3s ease infinite;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Style spécifique pour le titre du hero */
.hero-title.gradient-text {
  background: linear-gradient(
    135deg,
    #ffffff 0%,
    #f8fafc 30%,
    #e2e8f0 70%,
    #cbd5e1 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Fallback pour les navigateurs qui ne supportent pas background-clip */
@supports not (-webkit-background-clip: text) {
  .gradient-text {
    color: #ffffff !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    background: none !important;
  }

  .hero-title.gradient-text {
    color: #ffffff !important;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.6);
    background: none !important;
  }
}

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

.image-placeholder {
  font-size: 48px;
  color: var(--text-light);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(37, 99, 235, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

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

.overlay-buttons {
  display: flex;
  gap: var(--spacing-md);
}

.overlay-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--text-white);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition-fast);
}

.overlay-btn:hover {
  background-color: var(--bg-secondary);
  transform: scale(1.05);
}

.project-content {
  padding: var(--spacing-lg);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

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

.project-technologies {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.tech-tag {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 15px;
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* ========================================
   SECTION À PROPOS
   ======================================== */

.about {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-image {
  display: flex;
  justify-content: center;
}

.profile-container {
  position: relative;
  width: 250px;
  height: 250px;
}

.profile-photo {
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-light)
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 100px;
  color: var(--text-white);
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 2;
}

.profile-decoration {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  border: 3px solid var(--accent-color);
  border-radius: 50%;
  opacity: 0.3;
}

.about-text {
  max-width: 600px;
}

.about-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.about-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.about-buttons {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--text-white);
  border-radius: 50%;
  text-decoration: none;
  transition: var(--transition-fast);
  font-size: var(--font-size-lg);
}

.social-link:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ========================================
   SECTION TIMELINE
   ======================================== */

.timeline {
  padding: var(--spacing-3xl) 0;
}

.timeline-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline-container::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--border-color);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-2xl);
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-marker {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  background-color: var(--primary-color);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  z-index: 2;
  box-shadow: var(--shadow-md);
}

.timeline-content {
  background-color: var(--bg-card);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  width: 45%;
  position: relative;
}

.timeline-date {
  font-size: var(--font-size-sm);
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.timeline-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.timeline-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

/* ========================================
   SECTION CONTACT
   ======================================== */

.contact {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-form-container {
  background-color: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

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

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

.form-label {
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
  background-color: var(--bg-primary);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact-info-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  transition: var(--transition-normal);
}

.contact-item:hover {
  background-color: var(--bg-secondary);
  transform: translateY(-2px);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.contact-details {
  flex: 1;
}

.contact-label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.contact-value {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  display: inline-block;
  word-break: break-word;
  hyphens: auto;
  font-size: var(--font-size-sm);
}

.contact-value:hover {
  color: var(--primary-color);
  transform: translateY(-1px);
}

.contact-social {
  margin-top: var(--spacing-lg);
}

.social-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background-color: var(--bg-dark);
  color: var(--text-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.footer-subtitle {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-description {
  color: var(--text-light);
  line-height: 1.6;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-light);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-white);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

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

.copyright {
  color: var(--text-light);
  font-size: var(--font-size-sm);
}

/* ========================================
   ALERTES ET MESSAGES
   ======================================== */

.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--warning-color);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--info-color);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ========================================
   ANIMATIONS ET TRANSITIONS
   ======================================== */

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: var(--transition-slow);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: var(--transition-slow);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================
   UTILITAIRES
   ======================================== */

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

.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: var(--spacing-xs);
}
.mb-2 {
  margin-bottom: var(--spacing-sm);
}
.mb-3 {
  margin-bottom: var(--spacing-md);
}
.mb-4 {
  margin-bottom: var(--spacing-lg);
}
.mb-5 {
  margin-bottom: var(--spacing-xl);
}

.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: var(--spacing-xs);
}
.mt-2 {
  margin-top: var(--spacing-sm);
}
.mt-3 {
  margin-top: var(--spacing-md);
}
.mt-4 {
  margin-top: var(--spacing-lg);
}
.mt-5 {
  margin-top: var(--spacing-xl);
}

.hidden {
  display: none;
}
.visible {
  display: block;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablettes */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }

  .navbar-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .timeline-container::before {
    left: 30px;
  }

  .timeline-item {
    flex-direction: row !important;
    padding-left: 60px;
  }

  .timeline-marker {
    left: 30px;
    transform: translateX(-50%);
  }

  .timeline-content {
    width: 100%;
  }
}

/* Mobiles */
@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .about-buttons {
    flex-direction: column;
  }

  .project-filters {
    flex-direction: column;
    align-items: center;
  }

  .filter-btn {
    width: 200px;
  }
}