/* ===== STYLES COMMUNS À TOUT LE SITE ===== */
:root {
  /* --- KEY CHANGES: Reverted to Dark Theme with Golden Accents --- */
  --logo-gold: #f59e0b; /* The vibrant orange-gold from the logo */

  --primary-color: var(--logo-gold); /* Main highlight color is now gold */
  --accent-color: var(--logo-gold);  /* Accent color is also gold for consistency */
  
  /* Original Colors */
  --white: #ffffff;
  --warm-white: #fdfcf9;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography & Spacing */
  --font-family: 'Inter', sans-serif;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Radius & Shadows */
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08);
  
  --transition-normal: 300ms ease-in-out;
  --container-max-width: 1200px;
  --container-padding: var(--spacing-lg);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  line-height: 1.7;
  color: var(--gray-700);
  background-color: var(--warm-white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: var(--container-max-width); margin: 0 auto; padding: 0 var(--container-padding); }

/* Header & Navigation (Dark Theme) */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.nav { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-md) 0; height: 70px; }
.nav__logo { display: flex; align-items: center; gap: 0.75rem; }
.nav__logo-img { width: 45px; height: 45px; border-radius: 50%; object-fit: cover; }
.nav__logo-text { 
  font-weight: 700; 
  font-size: 1.125rem; 
  color: var(--warm-white);
}
.nav__menu { display: flex; align-items: center; gap: var(--spacing-xl); }
.nav__link { 
  font-weight: 500; 
  color: var(--gray-300);
  transition: color var(--transition-normal); 
  padding: 0.5rem 0; 
}
.nav__link:hover, .nav__link--active { color: var(--primary-color); } /* Will now be gold */
.nav__language { display: flex; gap: 0.25rem; }
.language-btn { 
  background: none; 
  border: 2px solid var(--gray-700);
  color: var(--gray-300);
  padding: 0.25rem 0.5rem; 
  border-radius: var(--radius-md); 
  font-size: 0.875rem; 
  font-weight: 500; 
  cursor: pointer; 
  transition: var(--transition-normal); 
}
.language-btn:hover { border-color: var(--primary-color); }
.language-btn--active { background-color: var(--primary-color); border-color: var(--primary-color); color: var(--gray-900); }


/* Sections & Cards (Dark Theme) */
.section { 
    padding: var(--spacing-4xl) 0; 
    position: relative; 
    background: linear-gradient(180deg, #0d1a3c, #0a1428); /* Original Deep space blue gradient */
    color: var(--gray-300); 
    overflow: hidden; 
    transition: background-color 0.8s ease-in-out; 
}
.section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(1px 1px at 20% 30%, #eee, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 70% 80%, #fff, rgba(0,0,0,0)),
        radial-gradient(1.5px 1.5px at 40% 10%, #ddd, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 250px 250px;
    animation: twinkle-deep-space 150s linear infinite;
    z-index: 0;
}
.section--alt { 
    background: linear-gradient(180deg, #0a1428, #050d1a); /* Original darker gradient */
    border-top: none; 
    border-bottom: none;
}
.section .container {
    position: relative;
    z-index: 1;
}
.section__header { text-align: center; margin-bottom: var(--spacing-3xl); position: relative; }
.section__title { 
    font-size: clamp(1.8rem, 4vw, 2.5rem); 
    font-weight: 700; 
    color: var(--white); 
    margin-bottom: var(--spacing-md); 
}
.section__subtitle { 
    font-size: 1.1rem; 
    color: var(--gray-300); 
    max-width: 600px; 
    margin: 0 auto; 
}
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--spacing-2xl); }

.card {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl); 
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg); 
    text-align: center; 
    transition: all var(--transition-normal);
    border: 1px solid rgba(245, 158, 11, 0.3); /* New faint gold border */
    position: relative; 
    overflow: hidden;
    animation: float 8s ease-in-out infinite;
    color: var(--warm-white);
}

.card:hover { 
    transform: translateY(-10px); 
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.5); /* New gold glow on hover */
    animation-play-state: paused; 
}
.card__icon { font-size: 2.5rem; margin-bottom: var(--spacing-lg); color: var(--accent-color); }
.card__avatar { width: 100px; height: 100px; border-radius: 50%; object-fit: cover; margin: 0 auto var(--spacing-lg); border: 4px solid var(--gray-200); }
.card__title { font-size: 1.25rem; font-weight: 600; color: var(--white); margin-bottom: 0.5rem; }
.card__role { color: var(--primary-color); font-weight: 600; margin-bottom: var(--spacing-md); }
.card__text { color: var(--gray-300); line-height: 1.6; margin-bottom: var(--spacing-lg); }


/* Buttons & Footer (Dark Theme) */
.btn { 
    display: inline-block; padding: 0.75rem 1.5rem; border-radius: var(--radius-lg); font-weight: 600; 
    transition: transform 0.2s, box-shadow 0.2s; cursor: pointer; text-align: center; border: none; 
}
.btn--primary { 
    background: #1a3b8f; 
    color: var(--white-900); /* Dark text for better contrast on gold button */
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.footer { 
    background: #0d1a3c;
    color: var(--gray-300); 
    padding: var(--spacing-3xl) 0; 
}
.footer__content { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--spacing-xl); text-align: center; }
.footer__title { font-size: 1.1rem; font-weight: 600; margin-bottom: var(--spacing-md); color: var(--white); }
.footer__link { color: var(--primary-color); text-decoration: underline; } /* Links will now be gold */
.footer__bottom { text-align: center; padding-top: var(--spacing-2xl); border-top: 1px solid var(--gray-700); color: var(--gray-500); margin-top: var(--spacing-2xl); }

.footer__social {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.social-links { display: flex; gap: 1rem; margin-top: 0.5rem; }
.social-links img { width: 30px; height: 30px; transition: transform 0.2s ease-in-out; }
.social-links img:hover { transform: translateY(-3px) scale(1.1); }

/* Animations Keyframes */
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }
@keyframes sparkle { 0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); } 50% { opacity: 1; transform: translateX(-50%) scale(1.2); } }
@keyframes twinkle-deep-space {
  from { transform: translate(0, 0); }
  to { transform: translate(-500px, 250px); }
}

/* Ajoutez ces keyframes dans base.css, par exemple après @keyframes twinkle-deep-space */
@keyframes moveStars {
  from { background-position: 0 0; }
  to { background-position: -10000px 5000px; } /* Déplace les étoiles pour simuler un mouvement */
}
/* Responsive */
@media (max-width: 768px) {
  .nav__menu {  
    position: fixed; top: 70px; left: 0; right: 0;  
    background: #1f2937;
    flex-direction: column; padding: var(--spacing-xl);  
    box-shadow: var(--shadow-xl);
    transform: translateY(-120%); transition: transform var(--transition-normal);
    gap: var(--spacing-lg);
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
  }
  .nav__menu.active { transform: translateY(0); }
  .nav__toggle { display: flex; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; }
  .nav__toggle span { width: 25px; height: 3px; background: var(--gray-300); border-radius: 2px; transition: all var(--transition-normal); }
  .nav__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav__toggle.active span:nth-child(2) { opacity: 0; }
  .nav__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }
  .footer__content { grid-template-columns: 1fr; }
}