* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #2ecc71;
  --secondary-color: #2c3e50;
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --bg-light: #f8f9fa;
  --white: #ffffff;
  --border-color: #e0e0e0;
  --hover-color: #27ae60;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
.navbar {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
}

.nav-brand .logo-img {
  height: 70px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  position: relative;
  padding: 8px 0;
  white-space: nowrap;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

.nav-menu a:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  gap: 4px;
  padding: 8px;
  z-index: 1000;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  border-radius: 2px;
  transition: 0.3s;
  display: block;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  color: var(--white);
  padding: 120px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.95;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--hover-color);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: #1a252f;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
}

/* Sections */
section {
  padding: 80px 20px;
}

section h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

.section-intro {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Formations Preview Cards */
.formations-preview {
  background-color: var(--bg-light);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.4rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.card p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* Formations Detail */
.formations-detail {
  background-color: var(--white);
}

.formation-item {
  background-color: var(--bg-light);
  padding: 2.5rem;
  margin-bottom: 2rem;
  border-radius: 10px;
  border-left: 5px solid var(--primary-color);
}

.formation-item h3 {
  font-size: 1.8rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.formation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.meta-item {
  color: var(--text-light);
}

.formation-item p {
  color: var(--text-dark);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* About Section */
.about {
  background-color: var(--bg-light);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.about-text p {
  margin-bottom: 1.5rem;
  line-height: 1.8;
  color: var(--text-dark);
}

.certification-box {
  background-color: var(--white);
  padding: 2.5rem;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.qualiopi-logo {
  max-width: 300px;
  width: 100%;
  height: auto;
  margin-bottom: 1.5rem;
}

.certification-box p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Contact Section */
.contact {
  background-color: var(--white);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-form {
  background-color: var(--bg-light);
  padding: 2.5rem;
  border-radius: 10px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--secondary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-group textarea {
  resize: vertical;
}

.contact-info {
  background-color: var(--bg-light);
  padding: 2.5rem;
  border-radius: 10px;
  height: fit-content;
}

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

.info-item {
  margin-bottom: 2rem;
}

.info-item strong {
  display: block;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.info-item p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Footer */
.footer {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 3rem 20px 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.footer-logo {
  height: 60px;
  width: auto;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-section p {
  margin-bottom: 0.5rem;
  opacity: 0.9;
  line-height: 1.6;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
  opacity: 0.9;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar .container {
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 15px;
  }

  .nav-brand .logo-img {
    height: 60px;
  }

  .nav-menu {
    display: flex;
    flex-direction: row;
    width: auto;
    justify-content: flex-end;
    gap: 1rem;
    flex-wrap: nowrap;
  }

  .nav-menu li:last-child {
    display: none;
  }

  .nav-menu a {
    font-size: 0.7rem;
  }

  .mobile-menu-toggle {
    display: none;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  section {
    padding: 60px 20px;
  }

  section h2 {
    font-size: 2rem;
  }

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

  .about-content {
    grid-template-columns: 1fr;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .formation-meta {
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 2.5rem;
  }
}