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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: #fff;
  color: #111;
  line-height: 1.6;
}

/* NAVIGATION */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 30px 60px;
  background: #fff;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav .logo {
  font-weight: bold;
  font-size: 26px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 30px;
}

nav ul li a {
  text-decoration: none;
  color: #111;
  font-size: 16px;
  position: relative;
}

nav ul li a.active::after,
nav ul li a:hover::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: #111;
  bottom: -5px;
  left: 0;
}

.btn-primary,
.btn-outline {
  display: inline-block;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 15px;
  transition: all 0.2s ease;
}

.btn-primary {
  background: #000;
  color: #fff;
}

.btn-primary:hover {
  background: #333;
}

.btn-outline {
  border: 1px solid #000;
  color: #000;
}

.btn-outline:hover {
  background: #000;
  color: #fff;
}

/* HERO / BANNER */
.banner {
  text-align: center;
  padding: 140px 20px 100px;
}

.banner h1 {
  font-size: 50px;
  max-width: 800px;
  margin: 0 auto 30px;
  font-weight: 600;
}

.banner p {
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 18px;
  color: #555;
}

.banner .btn-primary {
  font-size: 18px;
}

.banner {
  position: relative;
  text-align: center;
  padding: 140px 20px 100px;
  overflow: hidden;
}

.banner-bg-blur {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 100px;
  font-weight: 800;
  color: #000;
  opacity: 0.05;
  filter: blur(2px);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.banner h1,
.banner p,
.banner .btn-primary {
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .banner-bg-blur {
    font-size: 40px;
  }
}


/* Hamburger base style */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  height: 3px;
  width: 25px;
  background: #111;
  margin: 4px 0;
  transition: all 0.3s ease;
}

/* Mobile nav hidden by default */
@media (max-width: 768px) {
  nav ul.nav-links {
    position: absolute;
    right: 0;
    top: 80px;
    background: #fff;
    width: 100%;
    flex-direction: column;
    align-items: center;
    display: none; /* Hidden by default */
  }

  nav ul.nav-links.active {
    display: flex; /* Shown when active */
  }

  .hamburger {
    display: flex; /* Show burger on mobile */
  }
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.lang-segment {
  display: inline-flex;
  border: 1px solid #111;
  border-radius: 30px;
  overflow: hidden;
  margin-left: 20px;
}

.lang-btn {
  border: none;
  padding: 8px 16px;
  background: none;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s ease;
  color: #111;
}

.lang-btn.active {
  background: #111; 
  color: #fff;
}

.lang-segment .lang-btn:not(.active):hover {
  background: #f0f0f0;
}

@media (max-width: 768px) {
  .lang-segment {
    margin-top: 20px;
  }
}


/* SUBJECTS GRID */
.subjects {
  text-align: center;
  padding: 80px 20px;
}

.subjects h1 {
  font-size: 40px;
  margin-bottom: 50px;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 15px;
  padding: 50px 20px;
  text-align: center;
  font-size: 18px;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.card i {
  font-size: 40px;
  margin-bottom: 20px;
  color: #111;
}

/* QUIZ GAME */
.quiz-game {
  max-width: 700px;
  margin: 80px auto;
  text-align: center;
  padding: 0 20px;
}

.quiz-game h1 {
  font-size: 32px;
  margin-bottom: 20px;
}

#timer {
  font-size: 18px;
  color: #e74c3c;
  margin-bottom: 20px;
}

#question {
  font-size: 24px;
  margin-bottom: 30px;
}

#options {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.option {
  padding: 15px 20px;
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}

.option:hover {
  background: #f1f1f1;
}

#result {
  font-size: 18px;
  font-weight: bold;
  margin: 30px 0;
}

#next-btn {
  background: #111;
  color: #fff;
  border: none;
  padding: 14px 28px;
  border-radius: 30px;
  font-size: 16px;
  cursor: pointer;
}

#next-btn:hover {
  background: #333;
}

/* ABOUT & CONTACT */
.about,
.contact {
  max-width: 800px;
  margin: 80px auto;
  padding: 0 20px;
}

.about h1,
.contact h1 {
  font-size: 36px;
  margin-bottom: 20px;
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact form input,
.contact form textarea {
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 16px;
}

.contact form button {
  background: #111;
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 30px;
  cursor: pointer;
}

.contact form button:hover {
  background: #333;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 60px 20px;
  background: #111;
  color: #fff;
}

.socials {
  margin-bottom: 20px;
}

.socials a {
  color: #fff;
  margin: 0 15px;
  font-size: 24px;
  transition: color 0.2s;
}

.socials a:hover {
  color: #ddd;
}

footer p {
  font-size: 14px;
  color: #aaa;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 15px;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
  }

  .banner h1 {
    font-size: 32px;
  }

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

/* OBJECTIVES SECTION */
.objectives {
  background: #f9f9f9;
  padding: 80px 20px;
  text-align: center;
}

.objectives h2 {
  font-size: 36px;
  margin-bottom: 50px;
}

.objective-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.objective-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 15px;
  padding: 40px 20px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.objective-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.objective-card i {
  font-size: 40px;
  color: #111;
  margin-bottom: 20px;
}

.objective-card h3 {
  font-size: 22px;
  margin-bottom: 15px;
}

.objective-card p {
  font-size: 16px;
  color: #555;
}

/* Mobile responsive handled with grid auto-fit already */
#result .share-link-text {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: #111;
  font-size: 16px;
  word-break: break-all;
}
#result .copy-btn,
#result .return-btn {
  margin: 10px 0;
  display: inline-block;
}

/* LEVEL SELECTION PAGE */

/* Container centré avec du padding */
.container {
  max-width: 800px;
  margin: 80px auto;
  padding: 0 20px;
  text-align: center;
}

.container h1 {
  font-size: 36px;
  margin-bottom: 50px;
}

/* Grille responsive des niveaux */
.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

/* Boutons niveau */
.level-btn {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 30px;
  padding: 20px;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.level-btn:hover {
  background: #111;
  color: #fff;
}