/* Variables CSS */
:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --light-gray: #ecf0f1;
  --dark-gray: #34495e;
  --white: #ffffff;
  --text-color: #2c3e50;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--light-gray);
}

/* Navigation */
header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-link {
    text-decoration: none;
    cursor: pointer;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.logo h1:hover {
    transform: scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  background-color: var(--primary-color);
  color: var(--white);
}

/* Burger Menu */
.burger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.burger-bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--primary-color);
    transition: var(--transition);
}

@media (max-width: 768px) {
    .burger-menu {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 100%;
        max-width: 300px;
        background: var(--white);
        flex-direction: column;
        padding: 80px 2rem;
        gap: 1.5rem;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        transform: translateX(100%);
        will-change: transform;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
        -webkit-transform: translateZ(0) translateX(100%);
        -moz-transform: translateZ(0) translateX(100%);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        touch-action: pan-y pinch-zoom;
        overscroll-behavior: contain;
        pointer-events: auto;
        visibility: visible;
        display: flex !important;
    }
    
    .nav-links.active {
        transform: translateX(0);
        -webkit-transform: translateZ(0) translateX(0);
        -moz-transform: translateZ(0) translateX(0);
    }

    .nav-links.active {
        right: 0;
    }

    .burger-menu[aria-expanded="true"] .burger-bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .burger-menu[aria-expanded="true"] .burger-bar:nth-child(2) {
        opacity: 0;
    }

    .burger-menu[aria-expanded="true"] .burger-bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* Main content */
main {
  margin-top: 80px;
  padding: 2rem 5%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Hero section */
.hero {
  text-align: center;
  padding: 4rem 0;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: var(--white);
  border-radius: var(--border-radius);
  margin-bottom: 3rem;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* Content sections */
.content {
  margin-bottom: 3rem;
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.card p {
  margin-bottom: 1.5rem;
  color: var(--dark-gray);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background-color: var(--primary-color);
  color: var(--white);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: var(--transition);
  font-weight: 500;
}

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

/* Stats section */
.stats {
  background: var(--white);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  text-align: center;
  margin: 3rem 0;
}

.stats h3 {
  color: var(--secondary-color);
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--dark-gray);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Footer */
footer {
  background: var(--secondary-color);
  color: var(--white);
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

footer p {
  margin: 0.5rem 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .burger-menu {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 100%;
        max-width: 300px;
        background: var(--white);
        flex-direction: column;
        padding: 80px 2rem;
        gap: 1.5rem;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        transform: translateX(100%);
        will-change: transform;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
        -webkit-transform: translateZ(0) translateX(100%);
        -moz-transform: translateZ(0) translateX(100%);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        touch-action: pan-y pinch-zoom;
        overscroll-behavior: contain;
        pointer-events: auto;
        visibility: visible;
        display: flex !important;
    }

    main {
        margin-top: 120px;
        padding: 1rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
    
    .stat-number {
        font-size: 2rem;
    }
}


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

.mt-1 {
  margin-top: 1rem;
}
.mt-2 {
  margin-top: 2rem;
}
.mt-3 {
  margin-top: 3rem;
}

.mb-1 {
  margin-bottom: 1rem;
}
.mb-2 {
  margin-bottom: 2rem;
}
.mb-3 {
  margin-bottom: 3rem;
}

/* Code styling */
code {
  background-color: var(--light-gray);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
}

pre {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: 1rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: 1rem 0;
}

pre code {
  background: none;
  padding: 0;
  color: var(--white);
}

/* ----- FOOTER GLOBAL ----- */
.site-footer {
  background: #1e1e1e;
  color: #f0f0f0;
  font-size: 0.95rem;
  padding: 2rem 1.5rem;
  margin-top: 3rem;
}

.site-footer a {
  color: #d0d0ff;
  text-decoration: none;
  transition: color 0.3s ease;
}

.site-footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.site-footer h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

/* ----- CONTENEUR ----- */
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
}

/* ----- LIENS ----- */
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  flex: 2;
}

.links-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.links-column li {
  margin-bottom: 0.5rem;
}

/* ----- CONTACT ----- */
.contact-col p {
  margin: 0.25rem 0;
}

.mail-link {
  font-weight: bold;
}

.btn {
  background: transparent;
  border: 1px solid #ccc;
  color: #fff;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.3s ease, color 0.3s ease;
}

.btn:hover {
  background: #ffffff;
  color: #000;
}

/* ----- STATS ----- */
.footer-stats {
  flex: 1;
  min-width: 220px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 0.5rem;
}

.stat strong {
  display: block;
  font-size: 1.2rem;
  color: #ffffff;
}

/* ----- SOCIAUX ----- */
.socials {
  margin-top: 1rem;
}

.social {
  display: inline-block;
  margin-right: 0.5rem;
  color: #fff;
}

.social svg {
  vertical-align: middle;
  fill: currentColor;
  transition: transform 0.3s ease, color 0.3s ease;
}

.social:hover svg {
  color: #d0d0ff;
  transform: scale(1.1);
}

/* ----- COPYRIGHT ----- */
.footer-copy {
  border-top: 1px solid #444;
  margin-top: 2rem;
  padding-top: 1rem;
  text-align: center;
  font-size: 0.85rem;
  color: #aaa;
}

/* ----- MODAL (design de base, inactive sans JS) ----- */
.modal {
  display: none; /* caché par défaut */
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  justify-content: center;
  align-items: center;
}

.modal-inner {
  background: #2a2a2a;
  padding: 2rem;
  border-radius: 8px;
  max-width: 400px;
  width: 90%;
}

.modal-inner h2 {
  margin-top: 0;
  color: #fff;
}

.modal-inner label {
  display: block;
  margin: 0.5rem 0;
}

.modal-inner input,
.modal-inner textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #555;
  border-radius: 4px;
  background: #1a1a1a;
  color: #fff;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1rem;
}

.btn-primary {
  background: #4a90e2;
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
}

.btn-primary:hover {
  background: #357ab7;
}

/* ----- RESPONSIVE ----- */
@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
  }

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

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.course-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.course-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.course-title {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-status {
    font-size: 0.8rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.course-content {
    padding: 1.5rem;
}

.course-description {
    color: var(--dark-gray);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.course-topics {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.course-topics li {
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.course-topics li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.course-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
    margin-top: 1rem;
}

.course-link:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.course-link.disabled {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    cursor: not-allowed;
    transform: none;
}

.course-link.disabled:hover {
    background-color: var(--light-gray);
    transform: none;
}

.status-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-left: 0.5rem;
}

.status-available {
    background-color: var(--success-color);
    color: var(--white);
}

.status-coming-soon {
    background-color: var(--warning-color);
    color: var(--white);
}

.status-in-progress {
    background-color: var(--primary-color);
    color: var(--white);
}

.progress-section {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin: 2rem 0;
    text-align: center;
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.progress-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.progress-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
}

.progress-label {
    color: var(--dark-gray);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}