body {
  min-height: 100vh;
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-size: 100% 100%;
  background-position: 0 0;
  background-image: radial-gradient(
    75% 75% at 50% 50%,
    #0065FF 4%,
    #001A47 83%
  );
}

header {
  padding: 1.5rem 0;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: block;
  object-fit: contain;
}

.logo {
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  text-decoration: none;
  position: relative;
  transition: opacity 0.3s ease;
}

.logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #ffffff;
  transition: width 0.4s ease;
}

.logo:hover::after {
  width: 100%;
}

.logo:hover {
  opacity: 0.9;
}

.back-link {
  color: #ffffff;
  text-decoration: none;
  font-size: 1rem;
  position: relative;
  transition: opacity 0.3s ease;
}

.back-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: #ffffff;
  transition: width 0.4s ease;
}

.back-link:hover::after {
  width: 100%;
}

.back-link:hover {
  opacity: 0.85;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.page-title {
  text-align: center;
  margin-bottom: 2rem;
  padding: 4rem 2rem 2rem;
}

.page-title h1 {
  font-size: 3rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 1rem 0;
  line-height: 1.2;
}

.page-subtitle {
  font-size: 1.25rem;
  color: #ffffff;
  margin: 0;
  opacity: 0.9;
}

.card {
  background-color: #ffffff;
  color: #1f2937;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.card h1 {
  margin-top: 0;
  color: #1f2937;
}

.card {
  margin-top: 0;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: none;
  background-color: #2563eb;
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.2s;
}

.button:hover {
  background-color: #1d4ed8;
}

.button-secondary {
  background-color: #64748b;
}

.button-secondary:hover {
  background-color: #475569;
}

.button-danger {
  background-color: #dc2626;
}

.button-danger:hover {
  background-color: #b91c1c;
}

input,
textarea {
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  background-color: #ffffff;
  color: #1f2937;
  font-size: 1rem;
  font-family: inherit;
  box-sizing: border-box;
}

input::placeholder,
textarea::placeholder {
  color: #94a3b8;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

footer {
  text-align: center;
  padding: 3rem 2rem 2rem;
  color: #ffffff;
}

.footer-content {
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-content a {
  color: #ffffff;
  text-decoration: none;
  margin: 0;
  position: relative;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.footer-content a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: #ffffff;
  transition: width 0.4s ease;
}

.footer-content a:hover::after {
  width: 100%;
}

.footer-content a:hover {
  opacity: 0.85;
}

.copyright {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Media queries pour mobile */
@media (max-width: 768px) {
  header {
    padding: 1rem 0;
  }

  .header-content {
    padding: 0 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  .back-link {
    font-size: 0.875rem;
  }

  .container {
    padding: 1rem;
  }

  .page-title {
    padding: 2rem 1rem 1.5rem;
    margin-bottom: 1.5rem;
  }

  .page-title h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }

  .page-subtitle {
    font-size: 1rem;
  }

  .card {
    padding: 1.5rem;
  }

  footer {
    padding: 2rem 1rem 1.5rem;
  }

  .footer-content {
    gap: 0.75rem;
    flex-direction: row;
  }

  .footer-content a {
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .page-title {
    padding: 1.5rem 1rem 1rem;
  }

  .page-title h1 {
    font-size: 1.75rem;
  }

  .card {
    padding: 1rem;
  }

  footer {
    padding: 2rem 1rem 1.5rem;
  }

  .footer-content {
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-content a {
    font-size: 0.875rem;
    white-space: normal;
    text-align: center;
  }

  .copyright {
    font-size: 0.8rem;
  }
}

/* Section de maillage interne (backlinks) */
.internal-links {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.internal-links__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.internal-links__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.internal-links__item {
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
}

.internal-links__link {
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.internal-links__link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.internal-links__link[aria-current="page"] {
  opacity: 0.6;
  cursor: default;
  pointer-events: none;
}

.internal-links__desc {
  margin-left: 0.35rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: normal;
}

@media (max-width: 768px) {
  .internal-links {
    margin-top: 2rem;
    padding-top: 1.5rem;
  }

  .internal-links__title {
    font-size: 1rem;
  }

  .internal-links__item {
    font-size: 0.9rem;
  }
}