/* ===========================
   VARIABLES
   =========================== */
  /* Fonts */
  @import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600&family=Lato:wght@400;700&family=Bebas+Neue&family=Roboto:wght@400;500;700&display=swap');
  /* Color System - French variable names */
  :root {
   --bleu-marine: #0A2463;
   --orange-corail: #FF6B35;
   --orange-hover: #E55A2B;
   --texte-principal: #333333;
   --texte-secondaire: #6B7280;
   --fond-clair: #F8F9FA;
   --blanc: #FFFFFF;
   --radius: 0.75rem;    /* rounded corners */
   --shadow: 0 2px 8px rgba(0,0,0,0.10);
  }

  /* Legacy variable aliases (for existing markup that references old names) */
  :root {
    --primary: var(--bleu-marine);
    --offwhite: var(--fond-clair);
    --ink: var(--texte-principal);
    --muted: var(--texte-secondaire);
  }
  
  /* ===========================
     GLOBAL
     =========================== */
  html, body {
    height: 100%;
  }
  body {
    font-family: "Lato", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--texte-principal);
    background-color: #fff;
    line-height: 1.6;
    padding-top: 72px; /* space for sticky navbar */
  }
  
  /* Headings */
  h1, h2, h3, h4, h5 {
    font-family: "Playfair Display", Georgia, "Times New Roman", serif;
    font-weight: 600;
    color: var(--bleu-marine);
  }
  .section-title {
    font-weight: 700;
    margin-bottom: 1rem;
  }

  /* Logo typography helpers (use when logo is text-based) */
  .logo-wordmark {
    font-family: "Bebas Neue", "Impact", system-ui, sans-serif;
    letter-spacing: 0.5px;
  }
  .logo-text {
    font-family: "Roboto", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  }
  
  /* Links */
  a {
    color: var(--bleu-marine);
    text-decoration: none;
  }
  a:hover {
    text-decoration: underline;
  }
  
  /* Buttons */
  /* Buttons */
  .btn-primary {
    background-color: var(--orange-corail);
    color: var(--blanc);
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    transition: all 0.3s ease;
  }
  .btn-primary:hover {
    background-color: var(--orange-hover);
  }
  .btn-secondary {
    background-color: transparent;
    color: var(--bleu-marine);
    border: 1px solid var(--bleu-marine);
    padding: 12px 24px;
    border-radius: 4px;
  }
  .btn-secondary:hover {
    background-color: var(--bleu-marine);
    color: var(--blanc);
  }
  .btn-outline-primary {
    border-color: var(--orange-corail);
    color: var(--orange-corail);
  }
  .btn-outline-primary:hover {
    background-color: var(--orange-corail);
    color: var(--blanc);
  }
  
  /* ===========================
     NAVBAR
     =========================== */
  .navbar {
    background-color: rgba(10, 36, 99, 0.95) !important;
    position: fixed;
    top: 0;
    width: 100%;
    transition: all 0.3s ease;
    border-bottom: none;
  }
  .navbar.scrolled {
    transform: scaleY(0.9);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  }
  .navbar .navbar-brand {
    color: var(--blanc);
    font-weight: 700;
    letter-spacing: 0.2px;
  }
  .navbar .navbar-brand img {
    height: 48px;
    width: auto;
  }
  .navbar .nav-link {
    color: var(--blanc);
    transition: color 0.3s ease;
  }
  /* nav menu uses Bootstrap defaults for alignment */
  .navbar .nav-link:hover,
  .navbar .nav-link[aria-current="page"] {
    color: var(--orange-corail);
    font-weight: 600;
  }
  .navbar .navbar-toggler {
    border-color: rgba(255,255,255,0.4);
  }
  .navbar .navbar-toggler-icon {
    filter: invert(1); /* make hamburger white */
  }
  /* Language buttons and social icons in navbar */
  .navbar .btn-outline-primary {
    color: var(--blanc) !important;
    border-color: var(--blanc) !important;
  }
  .navbar .btn-outline-primary:hover {
    background-color: var(--blanc) !important;
    color: var(--bleu-marine) !important;
  }
  .navbar .text-decoration-none {
    color: var(--blanc) !important;
  }
  .navbar .text-decoration-none:hover {
    color: var(--orange-corail) !important;
  }
  
  /* ===========================
     HERO
     =========================== */
  .hero {
    background-color: #fff;
    border-bottom: 1px solid #eef2f7;
    padding: 4rem 0;
  }
  .hero img {
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  
  /* ===========================
     CARDS
     =========================== */
  .card {
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  .card-body {
    font-size: 0.95rem;
  }
  
  /* ===========================
     FOOTER
     =========================== */
  footer {
    background-color: var(--bleu-marine);
    color: var(--blanc);
    padding: 2rem 0;
  }
  footer .nav-link {
    color: var(--blanc);
  }
  footer .nav-link:hover {
    color: var(--orange-corail);
  }
  footer .small, footer .text-muted { color: var(--blanc) !important; }
  
  /* ===========================
     UTILITIES
     =========================== */
  .text-muted {
    color: var(--texte-secondaire) !important;
  }
  .rounded-4 {
    border-radius: 1rem;
  }
  .shadow-sm {
    box-shadow: var(--shadow) !important;
  }
  
  /* Transitions */
  a, button, .nav-link, .card {
    transition: all 0.3s ease;
  }
  
  /* ===========================
     ACCESSIBILITY
     =========================== */
  :focus-visible {
    outline: 3px solid var(--bleu-marine);
    outline-offset: 2px;
  }
  
  /* Page-specific styles */
  .hero-img { 
    max-width: 1000px; 
    width: 100%; 
    height: auto; 
  }
  .lang-fr { 
    display: none; 
  }
  
  /* Hobby-specific styling */
  .hobby-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--bleu-marine), #1e40af);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  
  .skill-badge {
    background-color: var(--fond-clair);
    color: var(--bleu-marine);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin: 0.25rem;
    display: inline-block;
  }
  
  /* Portfolio-specific styling */
  .project-card {
    transition: transform 0.2s ease-in-out;
  }
  .project-card:hover {
    transform: translateY(-2px);
  }
  .metric-badge {
    background: linear-gradient(135deg, var(--bleu-marine), #1e40af);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    font-weight: 600;
    font-size: 0.9rem;
  }
  .skill-tag {
    background-color: var(--fond-clair);
    color: var(--bleu-marine);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin: 0.25rem;
    display: inline-block;
  }
  .status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
  }
  .status-active {
    background-color: #dcfce7;
    color: #166534;
  }
  .status-personal {
    background-color: #dbeafe;
    color: #1e40af;
  }
  .status-academic {
    background-color: #fef3c7;
    color: #92400e;
  }
  
  /* Responsive tweaks */
  @media (max-width: 768px) {
    .navbar { padding: 1rem; }
    footer { padding: 3rem 0; }
  }