/* ===== VARIABLES ===== */
:root {
  --bg-color: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-color: #2d3748;
  --text-secondary: #718096;
  --header-bg: #ffffff;
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.08);
  --border-color: #e2e8f0;
  --accent-color: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: #dbeafe;
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

[data-theme="dark"] {
  --bg-color: #0a0e1a;
  --bg-secondary: #151b2e;
  --text-color: #ffffff;
  --text-secondary: #e2e8f0;
  --header-bg: #0f1420;
  --card-bg: #1a2234;
  --card-shadow: rgba(0, 0, 0, 0.5);
  --border-color: #2d3748;
  --accent-color: #60a5fa;
  --accent-hover: #93c5fd;
  --accent-light: #1e3a5f;
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--header-bg);
  box-shadow: 0 2px 10px var(--card-shadow);
  transition: all 0.3s;
}

.header.scrolled {
  padding: 0.6rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-color);
  font-weight: 500;
  position: relative;
  transition: color 0.2s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.2s;
}

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

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

.header-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

#theme-toggle {
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.6rem;
  border-radius: 9999px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

#theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  border-color: var(--accent-color);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-color);
  border-radius: 3px;
  transition: all 0.2s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== 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%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
}

.profile-img {
  width: 180px;
  height: 180px;
  border-radius: 9999px;
  object-fit: cover;
  margin: 0 auto 2rem;
  border: 5px solid var(--accent-color);
  box-shadow: 0 10px 40px var(--card-shadow);
  transition: transform 0.3s;
}

.profile-img:hover {
  transform: scale(1.05);
}

.profile-img-placeholder {
  width: 180px;
  height: 180px;
  border-radius: 9999px;
  margin: 0 auto 2rem;
  border: 5px solid var(--accent-color);
  box-shadow: 0 10px 40px var(--card-shadow);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: white;
  transition: transform 0.3s;
}

.profile-img-placeholder:hover {
  transform: scale(1.05);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.role {
  font-size: 1.4rem;
  color: var(--accent-color);
  display: block;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin: 0 auto 2rem;
  max-width: 600px;
}

.buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== BOUTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  border-radius: 1rem;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

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

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

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

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

/* ===== SECTIONS ===== */
section {
  padding: 6rem 0;
}

section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 1rem;
  text-align: center;
  box-shadow: 0 4px 15px var(--card-shadow);
  transition: transform 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-card i {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
  display: block;
}

.stat-card h3 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.skill-category {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 15px var(--card-shadow);
}

.skill-category h3 {
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-item {
  margin-bottom: 1.2rem;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.skill-bar {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 9999px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  width: 0%;
  background: var(--gradient-primary);
  border-radius: 9999px;
  transition: width 1.5s ease;
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--card-bg);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 15px var(--card-shadow);
  transition: all 0.3s;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px var(--card-shadow);
}

.project-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

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

.project-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: rgba(255, 255, 255, 0.6);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(59, 130, 246, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  transition: opacity 0.3s;
}

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

.project-link {
  width: 50px;
  height: 50px;
  background: white;
  color: var(--accent-color);
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: transform 0.2s;
}

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

.project-content {
  padding: 1.5rem;
}

.project-content h3 {
  margin-bottom: 0.5rem;
  color: var(--accent-color);
}

.project-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  padding: 0.3rem 0.8rem;
  background: var(--accent-light);
  color: var(--accent-color);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Styles pour les tags de projet */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tags .tag {
  padding: 0.4rem 1rem;
  background: var(--accent-light);
  color: var(--accent-color);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
}

.project-tags .tag:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-2px);
}

/* Conteneur des liens de projet */
.project-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

/* Boutons de lien de projet dans le contenu */
.project-content .project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: auto;
  height: auto;
  padding: 0.7rem 1.5rem;
  background: var(--accent-color);
  color: white;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.project-content .project-link:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

.project-content .project-link i {
  font-size: 1rem;
}

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

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: 4rem;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

/* Cartes de contact modernisées */
.contact-card {
  background: var(--card-bg);
  padding: 2rem 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 15px var(--card-shadow);
  text-align: center;
  transition: all 0.3s;
  border: 2px solid transparent;
}

.contact-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
  box-shadow: 0 8px 25px var(--card-shadow);
}

.contact-card-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  border-radius: 50%;
  transition: all 0.3s;
}

.contact-card:hover .contact-card-icon {
  background: var(--accent-color);
  transform: scale(1.1) rotate(5deg);
}

.contact-card-icon i {
  font-size: 1.8rem;
  color: var(--accent-color);
  transition: color 0.3s;
}

.contact-card:hover .contact-card-icon i {
  color: white;
}

.contact-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.contact-card p,
.contact-card a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color 0.2s;
  word-break: break-word;
}

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

/* Section réseaux sociaux dans le contact */
.contact-social {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: 1rem;
  margin-top: 1rem;
}

.contact-social h4 {
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
  color: var(--text-color);
}

.contact-socials {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-link {
  width: 55px;
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border-radius: 50%;
  color: var(--text-color);
  font-size: 1.4rem;
  transition: all 0.3s;
  box-shadow: 0 4px 10px var(--card-shadow);
}

.social-link:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-5px) scale(1.1);
}

/* Formulaire amélioré */
.contact-form-wrapper {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 20px var(--card-shadow);
}

.contact-form {
  /* Reset des styles précédents */
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.95rem;
}

.form-group label i {
  color: var(--accent-color);
  font-size: 1rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.2rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--bg-color);
  color: var(--text-color);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.form-group input.valid,
.form-group textarea.valid {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.05);
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
  animation: shake 0.3s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.btn-submit {
  width: 100%;
  justify-content: center;
  padding: 1.2rem;
  font-size: 1.05rem;
  margin-top: 0.5rem;
}

.btn-submit:hover {
  transform: translateY(-3px);
}

.form-status {
  margin-top: 1.5rem;
  padding: 1.2rem;
  border-radius: 0.75rem;
  text-align: center;
  display: none;
  font-weight: 500;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-status.success {
  background: #d1fae5;
  color: #065f46;
  border: 2px solid #10b981;
}

.form-status.error {
  background: #fee2e2;
  color: #991b1b;
  border: 2px solid #ef4444;
}

.form-status.info {
  background: var(--accent-light);
  color: var(--accent-color);
  border: 2px solid var(--accent-color);
}

/* Carte de localisation */
.location-map {
  margin-top: 4rem;
  text-align: center;
}

.location-map h3 {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-color);
}

.location-map h3 i {
  color: var(--accent-color);
  font-size: 2rem;
}

.map-container {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 8px 30px var(--card-shadow);
  transition: transform 0.3s;
}

.map-container:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px var(--card-shadow);
}

/* Améliorations mode sombre */
[data-theme="dark"] .contact-card {
  background: linear-gradient(145deg, #1a2234, #141d2e);
  border: 1px solid #2d3748;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .contact-card:hover {
  background: linear-gradient(145deg, #1e2740, #1a2234);
  border-color: #60a5fa;
  box-shadow: 0 12px 32px rgba(96, 165, 250, 0.2);
  transform: translateY(-8px);
}

[data-theme="dark"] .contact-card-icon {
  background: linear-gradient(135deg, #1e3a5f 0%, #2d4a7c 100%);
  box-shadow: 0 4px 15px rgba(96, 165, 250, 0.3);
}

[data-theme="dark"] .contact-card:hover .contact-card-icon {
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  box-shadow: 0 6px 20px rgba(96, 165, 250, 0.5);
}

[data-theme="dark"] .contact-social {
  background: linear-gradient(145deg, #151b2e, #0f1420);
  border: 1px solid #2d3748;
}

[data-theme="dark"] .social-link {
  background: linear-gradient(145deg, #1a2234, #141d2e);
  border: 1px solid #2d3748;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .social-link:hover {
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  border-color: #60a5fa;
  box-shadow: 0 6px 20px rgba(96, 165, 250, 0.4);
}

[data-theme="dark"] .contact-form-wrapper {
  background: linear-gradient(145deg, #1a2234, #141d2e);
  border: 1px solid #2d3748;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
  background: #0f1420;
  border-color: #2d3748;
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus {
  background: #141d2e;
  border-color: #60a5fa;
  box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.15);
}

[data-theme="dark"] .form-group input.valid,
[data-theme="dark"] .form-group textarea.valid {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

[data-theme="dark"] .form-group input.invalid,
[data-theme="dark"] .form-group textarea.invalid {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

[data-theme="dark"] .map-container {
  border: 1px solid #2d3748;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .map-container:hover {
  box-shadow: 0 12px 48px rgba(96, 165, 250, 0.2);
}

[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  box-shadow: 0 8px 25px rgba(96, 165, 250, 0.4);
}

/* Amélioration des autres cartes en mode sombre */
[data-theme="dark"] .stat-card {
  background: linear-gradient(145deg, #1a2234, #141d2e);
  border: 1px solid #2d3748;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .stat-card:hover {
  background: linear-gradient(145deg, #1e2740, #1a2234);
  box-shadow: 0 12px 32px rgba(96, 165, 250, 0.2);
}

[data-theme="dark"] .skill-category {
  background: linear-gradient(145deg, #1a2234, #141d2e);
  border: 1px solid #2d3748;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .project-card {
  background: linear-gradient(145deg, #1a2234, #141d2e);
  border: 1px solid #2d3748;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .project-card:hover {
  box-shadow: 0 12px 32px rgba(96, 165, 250, 0.2);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-color);
  padding: 4rem 0 1.5rem;
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-about h3 {
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-about p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.footer-links h4,
.footer-social h4 {
  margin-bottom: 1rem;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.socials {
  display: flex;
  gap: 0.75rem;
}

.socials a {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 1rem;
  color: var(--text-color);
  font-size: 1.3rem;
  transition: all 0.2s;
}

.socials a:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.copyright {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== BOUTON RETOUR EN HAUT ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 9999px;
  font-size: 1.3rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links ul {
    align-items: center;
  }

  .socials {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--header-bg);
    transition: left 0.3s;
    padding: 2rem;
  }

  .nav.active {
    left: 0;
  }

  .nav-links {
    flex-direction: column;
    gap: 1.5rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .buttons {
    flex-direction: column;
  }

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

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

  .contact-form-wrapper {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .projects-grid,
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .contact-card {
    padding: 1.5rem 1rem;
  }

  .contact-card-icon {
    width: 60px;
    height: 60px;
  }

  .contact-card-icon i {
    font-size: 1.5rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 0.9rem;
  }
}

/* ===== ACCESSIBILITÉ ===== */
/* Focus visible pour la navigation au clavier */
.keyboard-nav *:focus {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

/* Masquer le focus par défaut pour la souris */
*:focus {
  outline: none;
}

/* Skip to content link */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--accent-color);
  color: white;
  padding: 1rem 2rem;
  text-decoration: none;
  z-index: 10000;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

/* Messages d'erreur dans les formulaires */
.error-message {
  display: none;
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.form-group input.invalid ~ .error-message,
.form-group textarea.invalid ~ .error-message {
  display: block;
}

/* Required indicator */
.required {
  color: #ef4444;
  font-weight: bold;
}

/* Amélioration du bouton de téléchargement CV */
.btn-download {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
  color: white;
  border: none;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

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

/* Préchargement des fonts pour les performances */
@font-face {
  font-family: 'Segoe UI';
  font-display: swap;
}

/* Amélioration du contraste pour les liens */
a {
  transition: color 0.2s ease;
}

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

/* Media queries pour l'impression */
@media print {
  .header,
  .footer,
  .back-to-top,
  .contact-form-wrapper {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}