/* Reset et base */
body {
  font-family: system-ui, sans-serif;
  color: #212529;
  background: #fff;
  line-height: 1.6;
  margin: 0;
}

/* Global horizontal padding for container */
.container {
  padding-left: 2rem;
  padding-right: 2rem;
}
section {
  margin-left: 1rem;
  margin-right: 1rem;
}

/* Navbar styles */
.navbar {
  background: #212529;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.5rem 0;
}
.brand {
  color: #fff;
  font-weight: bold;
  text-decoration: none;
  font-size: 1.5rem;
}
.toggler {
  background: none;
  border: none;
  color: #fff;
}
.toggler-icon {
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 30 30' ... %3C/svg%3E")
    center/contain no-repeat;
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1rem;
}
.nav-item {
}
.nav-link {
  color: #fff;
  text-decoration: none;
  padding: 0.5rem 1rem;
  transition: color 0.2s;
}
.nav-link:hover {
  color: #0dcaf0;
}

/* Hero section */
.home {
  background: #6c757d;
  color: #fff;
  padding: 5rem 0;
}
.flex {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.img-main {
  border-radius: 1rem;
  width: 50%;
  max-width: 400px;
  display: block;
  margin: 0 auto;
}

/* Highlights section */
.highlights {
  padding: 3rem 0;
  background: #f8f9fa;
}
.row {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.col {
  flex: 1 1 0;
  min-width: 250px;
}
.card {
  border-radius: 0.75rem;
  box-shadow: 0 2px 6px hsl(210 20% 10% / 0.1);
  background: #fff;
  margin-bottom: 2rem;
  overflow: hidden;
}
.icon-bg {
  background: #0dcaf0;
  color: #fff;
  border-radius: 0.75rem 0.75rem 0 0;
  padding: 1rem;
  text-align: center;
}
.icon {
  font-size: 2.5rem;
}
.card-body {
  padding: 1.5rem;
}
.card-title {
  font-weight: bold;
}
.card-text {
  margin-bottom: 1rem;
}

/* Buttons */
.btn-info,
.btn-main {
  background: #0dcaf0;
  color: #fff;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  border: none;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s;
  text-align: center; /* centrage sûr */
}
.btn-info:hover {
  background: #0bb2d4;
}

/* Curriculum section */
.curriculum {
  padding: 3rem 0;
  background: #f8f9fa;
}
.card-section {
  border-radius: 0.75rem;
  background: #fff;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 6px hsl(210 20% 10% / 0.1);
}
.img-section {
  width: 100%;
  border-radius: 1rem;
  max-width: 400px;
  display: block;
  margin: 0 auto;
}

/* Primary button styles */
.btn-primary {
  background: #0d6efd;
  color: #fff;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  border: none;
  text-decoration: none;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background 0.2s;
  text-align: center;
}
.btn-primary:hover {
  background: #0b5ed7;
}
.btn-block {
  width: 75%;
  display: block;
  margin: 1rem auto 0;
}

/* Block button with icon styles */
.btn-primary.btn-block,
.btn-info.btn-block,
.btn-main.btn-block {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
}
.btn-primary.btn-block i,
.btn-info.btn-block i,
.btn-main.btn-block i {
  font-size: 1rem;
  margin-left: 0.25rem;
}

/* Instructors/Teams section */
.instructors {
  padding: 3rem 0;
  text-align: center;
  background: #fff;
}
.img-instructor {
  border-radius: 50%;
  width: 50%;
  max-width: 150px;
  display: block;
  margin: 0 auto;
}
.btn-social {
  background: #212529;
  color: #fff;
  border-radius: 50%;
  padding: 0.5rem;
  margin: 0 0.25rem;
  display: inline-block;
  text-align: center;
  border: none;
  transition: background 0.2s;
  font-size: 1.2rem;
}
.btn-social:hover {
  background: #0dcaf0;
}

/* Subscribe section */
.subscribe {
  background: #0dcaf0;
  color: #fff;
  padding: 2rem 0;
  text-align: center;
}
.input-group-main {
  border-radius: 0.5rem;
  width: 75%;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 2rem;
}
.input {
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  border: none;
  width: 60%;
  font-size: 1rem;
}

/* Footer styles */
.footer {
  background: hsl(210 30% 12%);
  color: hsl(210 20% 85%);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.875rem;
}
.footer-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.footer-lead {
  font-style: italic;
  font-weight: bold;
  font-size: 1.25rem;
}
.footer-copy {
  margin-top: 2rem;
  border-top: 1px solid hsl(210 20% 85%);
  padding-top: 1rem;
}

/* FAQ section aligned with Teams grid */
section.faq {
  padding: 3rem 0;
  background: #f8f9fa;
}
section.faq .container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}
.faq h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
  color: #212529;
}
.faq .accordion-item {
  border: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px hsl(210 20% 10% / 0.08);
  margin-bottom: 1rem;
  background: #fff;
}
.faq .accordion-button {
  font-weight: 600;
  padding: 1rem 1.25rem;
  background: #fff;
}
.faq .accordion-button:not(.collapsed) {
  color: #0d6efd;
  background: #eef5ff;
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.05);
}
.faq .accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
}
.faq .accordion-body {
  padding: 1rem 1.25rem 1.25rem;
  color: #333;
}

/* Responsive adjustments for FAQ */
@media (max-width: 900px) {
  section.faq .container {
    padding: 0 1rem;
  }
}

/* Contact section */
section.contact {
  padding: 3rem 0;
  background: #f8f9fa;
  display: flex;
  gap: 2rem;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
}
.contact form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-form,
.contact-info {
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 2px 8px hsl(210 20% 10% / 0.08);
  padding: 2rem;
  min-width: 320px;
  max-width: 560px;
  flex: 1 1 420px;
}
.contact-form h2,
.contact-info h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #212529;
  font-weight: bold;
}
.contact input,
.contact textarea {
  border: 1px solid #dee2e6;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  width: 100%;
  background: #fff;
  color: #212529;
}
.contact textarea {
  min-height: 100px;
  max-height: 200px;
  resize: vertical;
}
.contact-info {
  padding-top: 1rem;
  border-top: 1px solid #eee;
}
.contact-info h2 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: #212529;
  font-weight: bold;
}
.contact-info p {
  margin: 0.2rem 0;
  color: #0d6efd;
  font-size: 1rem;
}

/* Responsive styles */
@media (max-width: 768px) {
  .home,
  .highlights,
  .curriculum,
  .instructors,
  .subscribe {
    padding: 2rem 0;
  }
  .flex {
    flex-direction: column;
  }
  .img-main,
  .img-section,
  .img-instructor {
    width: 100%;
    max-width: 100%;
  }
  .input-group-main {
    width: 100%;
    flex-direction: column;
    gap: 1rem;
  }
  .contact-form,
  .contact-info {
    padding: 1.25rem;
  }
}
@media (max-width: 900px) {
  .faq {
    max-width: 98vw;
    padding: 2rem 1rem;
    margin: 2rem auto;
  }
}
@media (min-width: 1200px) {
  .container {
    padding-left: 4rem;
    padding-right: 4rem;
  }
  section {
    margin-left: 2rem;
    margin-right: 2rem;
  }
}

/* FAQ section: wide, clean look */
.faq {
  background: #f8f9fa;
  box-shadow: none;
  border-radius: 1rem;
  max-width: 1000px;
  padding: 3rem 2rem;
  margin: 3rem auto;
  gap: 2rem;
}