/* ============================================
   CoreClasses Main Stylesheet
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

/* ===== HEADER & NAVIGATION (FIXED FOR MOBILE) ===== */
.site-header {
    position: sticky;
    top: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-sticky);
    transition: box-shadow var(--transition-base);
  }
  
  .navbar {
    padding: var(--spacing-md) 0;
  }
  
  .navbar-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
  }
  
  /* Logo */
  .navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    text-decoration: none;
    transition: transform var(--transition-fast);
    z-index: 1001;
  }
  
  .navbar-brand:hover {
    transform: scale(1.02);
    color: var(--color-dark);
  }
  
  .logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  
  /* .brand-name {
    color: var(--color-dark);
  } */

  .brand-name {
    font-weight: 600;
    color: #2C3E50;
  }
  
  .domain-ext {
    font-weight: 400;
    opacity: 1;
    color: #008d71;
  }
  
  
  /* Mobile Menu Toggle */
  .mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    z-index: 1001;
  }
  
  .hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--color-dark);
    border-radius: 2px;
    transition: all var(--transition-fast);
  }
  
  /* Navigation Menu */
  .nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  .nav-item {
    margin: 0;
  }
  
  .nav-link {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: block;
    text-decoration: none;
  }
  
  .nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
  }
  
  .nav-link.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    background-color: var(--color-primary-light);
  }
  
  /* Navbar Actions */
  .navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .btn-youtube-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-white);
    color: var(--color-youtube);
    border: 2px solid var(--color-youtube);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
  }
  
  .btn-youtube-header:hover {
    background-color: var(--color-youtube);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
  .btn-whatsapp-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-whatsapp);
    color: var(--color-white);
    border: 2px solid var(--color-whatsapp);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
  }
  
  .btn-whatsapp-header:hover {
    background-color: var(--color-whatsapp-hover);
    border-color: var(--color-whatsapp-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
/* ===== FOOTER ===== */
.site-footer {
  background-color: #1a202c;
  color: #a0aec0;
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  padding-bottom: var(--spacing-3xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  max-width: 350px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  text-decoration: none;
}

.footer-logo .brand-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}

.footer-logo .brand-name span {
  color: var(--color-secondary);
}

.footer-description {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: #cbd5e0;
  margin-bottom: var(--spacing-lg);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-white);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-primary);
  transform: translateY(-3px);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-links a {
  color: #cbd5e0;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--color-white);
  padding-left: var(--spacing-sm);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  font-size: var(--font-size-sm);
}

.footer-bottom-left p {
  color: #a0aec0;
  margin: 0;
}

.footer-bottom-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer-bottom-right a {
  color: #cbd5e0;
  transition: color var(--transition-fast);
}

.footer-bottom-right a:hover {
  color: var(--color-white);
}

.separator {
  color: #4a5568;
}

/* ===== HERO SECTION ===== */
.hero-section {
  background: linear-gradient(135deg, #e8eef9 0%, #f5f7fa 100%);
  padding: var(--spacing-4xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-content {
  padding-right: var(--spacing-xl);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-size: var(--font-size-5xl);
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.hero-title .highlight {
  color: var(--color-primary);
}

.hero-title .highlight-secondary {
  color: var(--color-secondary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
}

.hero-subtitle strong {
  color: var(--color-dark);
  font-weight: var(--font-weight-semibold);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.btn-youtube-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-youtube);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.btn-youtube-primary:hover {
  background-color: var(--color-youtube-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-lg);
}

.hero-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.hero-stat::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-secondary);
}

.hero-visual {
  position: relative;
}

.hero-card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.play-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.hero-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.hero-card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin: 0;
}

.hero-placeholder {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary-light) 100%);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.hero-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.student-avatars {
  display: flex;
  align-items: center;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  border: 2px solid var(--color-white);
  margin-left: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.avatar:first-child {
  margin-left: 0;
}

.students-joined {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
}

.students-joined small {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  font-weight: var(--font-weight-normal);
}

.btn-certificate-badge {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-lg);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* ===== COURSE CATEGORIES SECTION ===== */
.categories-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
  }
  
  .section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
  }
  
  .section-title {
    font-size: var(--font-size-4xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
  }
  
  .section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
  }
  
  .categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
  }
  
  .category-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
  }
  
  .category-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
  }
  
  .category-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    transition: all var(--transition-base);
  }
  
  .category-card:hover .category-icon {
    transform: scale(1.1);
  }
  
  .category-card:nth-child(1) .category-icon {
    background-color: #e3f2fd;
    color: #1976d2;
  }
  
  .category-card:nth-child(2) .category-icon {
    background-color: #fce4ec;
    color: #c2185b;
  }
  
  .category-card:nth-child(3) .category-icon {
    background-color: #fff3e0;
    color: #f57c00;
  }
  
  .category-card:nth-child(4) .category-icon {
    background-color: #e8f5e9;
    color: #388e3c;
  }
  
  .category-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
  }
  
  .category-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
  }
  
  .category-subjects {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
  }
  
  .subject-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
  }
  
  .category-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: gap var(--transition-fast);
  }
  
  .category-link:hover {
    gap: var(--spacing-md);
  }
  
  /* ===== WHY CHOOSE US SECTION ===== */
  .why-choose-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-gray-100);
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }
  
  .feature-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
  }
  
  .feature-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-secondary-light);
    color: var(--color-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
  }
  
  .feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary-light) 100%);
  }
  
  .feature-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
  }
  
  .feature-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
  }
  
  /* ===== HOW IT WORKS SECTION ===== */
  .how-it-works-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
  }
  
  .steps-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    position: relative;
    margin-top: var(--spacing-3xl);
  }
  
  .steps-container::before {
    content: '';
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    z-index: 0;
  }
  
  .step-card {
    position: relative;
    z-index: 1;
    text-align: center;
  }
  
  .step-number {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background-color: var(--color-dark);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-heading);
    box-shadow: 0 0 0 8px var(--color-white);
  }
  
  .step-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
  }
  
  .step-card:nth-child(1) .step-icon-wrapper {
    background-color: #ffebee;
  }
  
  .step-card:nth-child(2) .step-icon-wrapper {
    background-color: #e8f5e9;
  }
  
  .step-card:nth-child(3) .step-icon-wrapper {
    background-color: #e3f2fd;
  }
  
  .step-card:nth-child(4) .step-icon-wrapper {
    background-color: #f3e5f5;
  }
  
  .step-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
  }
  
  .step-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
  }
  
  .steps-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
  }
  
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .btn-secondary:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
  /* ===== YOUTUBE CHANNELS SECTION ===== */
  .youtube-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, #fff5f7 0%, #fff 100%);
  }
  
  .youtube-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: #ffebee;
    color: var(--color-youtube);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin: 0 auto var(--spacing-lg);
  }
  
  .channels-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
  }
  
  .channel-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 2px solid var(--color-gray-200);
    transition: all var(--transition-base);
    text-align: center;
  }
  
  .channel-card:hover {
    border-color: var(--color-youtube);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
  }
  
  .channel-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background-color: #ffebee;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--color-youtube);
  }
  
  .channel-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
  }
  
  .channel-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
  }
  
  .channel-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
  }
  
  .channel-stat {
    text-align: center;
  }
  
  .stat-value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
  }
  
  .stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
  }
  
  .btn-youtube-subscribe {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-youtube);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
  }
  
  .btn-youtube-subscribe:hover {
    background-color: var(--color-youtube-hover);
    transform: scale(1.05);
  }
  
  .youtube-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
  }
  
  .youtube-footer-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
  }
  
  .btn-youtube-outline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-white);
    color: var(--color-youtube);
    border: 2px solid var(--color-youtube);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .btn-youtube-outline:hover {
    background-color: var(--color-youtube);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  /* ===== TESTIMONIALS SECTION ===== */
  .testimonials-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
  }
  
  .testimonials-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
  }
  
  .testimonials-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background-color: var(--color-secondary-light);
    color: var(--color-secondary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-lg);
  }
  
  .testimonials-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
  }
  
  .testimonials-title .highlight {
    color: var(--color-primary);
  }
  
  .testimonials-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
  }
  
  .video-testimonials {
    margin-bottom: var(--spacing-3xl);
  }
  
  .video-testimonials-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    margin-bottom: var(--spacing-xl);
  }
  
  .video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }
  
  .video-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-base);
  }
  
  .video-card:hover {
    transform: scale(1.03);
  }
  
  .video-thumbnail {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
  }
  
  .video-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 24px;
    transition: all var(--transition-base);
  }
  
  .video-card:hover .video-play-icon {
    transform: translate(-50%, -50%) scale(1.1);
    background-color: var(--color-white);
  }
  
  .video-info {
    position: absolute;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    color: var(--color-white);
  }
  
  .video-student-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
  }
  
  .video-course {
    font-size: var(--font-size-sm);
    opacity: 0.9;
  }
  
  .video-duration {
    position: absolute;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-sm);
  }
  
  .text-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
  }
  
  .testimonial-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
  }
  
  .testimonial-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
  }
  
  .testimonial-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
  }
  
  .video-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: #ff4444;
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }
  
  .rating-stars {
    color: #ffc107;
    font-size: var(--font-size-lg);
  }
  
  .quote-icon {
    font-size: var(--font-size-4xl);
    color: var(--color-gray-200);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
  }
  
  .testimonial-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
  }
  
  .testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
  }
  
  .author-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
    margin-bottom: 2px;
  }
  
  .author-role {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
  }
  
  .author-course {
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
  }
  
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
  }
  
  .stat-card {
    background-color: var(--color-primary-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
  }
  
  .stat-number {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
  }
  
  .stat-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
  }
  
  /* ===== CERTIFICATE SECTION ===== */
  .certificate-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-gray-100);
  }
  
  .certificate-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
  }
  
  .certificate-visual {
    position: relative;
  }
  
  .certificate-image {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, #667eea 100%);
    padding: var(--spacing-3xl);
    color: var(--color-white);
    text-align: center;
  }
  
  .certificate-mock {
    border: 8px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3xl) var(--spacing-xl);
    background-color: rgba(255, 255, 255, 0.1);
  }
  
  .cert-badge-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background-color: #F39C12;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
  }
  
  .cert-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 2px;
  }
  
  .cert-course-name {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
  }
  
  .cert-level {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
  }
  
  .cert-divider {
    width: 100px;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.5);
    margin: var(--spacing-xl) auto;
  }
  
  .cert-awarded {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
  }
  
  .cert-student-name {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xl);
  }
  
  .cert-footer {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
  }
  
  .certificate-content {
    padding-left: var(--spacing-xl);
  }
  
  .certificate-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-lg);
    background-color: #fff3e0;
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
  }
  
  .certificate-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }
  
  .cert-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .cert-feature-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--color-secondary);
    font-size: 20px;
  }
  
  .cert-feature-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
  }
  
  .certificate-cta {
    display: flex;
    gap: var(--spacing-md);
  }
  
  .btn-outline-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .btn-outline-primary:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
  }
  
  /* ===== FINAL CTA SECTION ===== */
  .final-cta-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #667eea 100%);
    color: var(--color-white);
    text-align: center;
  }
  
  .final-cta-title {
    font-size: var(--font-size-4xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
  }
  
  .final-cta-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    line-height: var(--line-height-relaxed);
  }
  
  .final-cta-description strong {
    color: var(--color-white);
  }
  
  .final-cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }
  
  .btn-white {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-white);
    color: var(--color-primary);
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-lg);
  }
  
  .btn-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
  }
  
  .btn-outline-white {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .btn-outline-white:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-3px);
  }
  
  .final-cta-help {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
  }
  
  .final-cta-help a {
    color: var(--color-white);
    text-decoration: underline;
    font-weight: var(--font-weight-semibold);
  }
  
  /* ===== RESPONSIVE DESIGN ===== */
  @media (max-width: 1024px) {
    .categories-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .channels-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-top {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 768px) {
    .mobile-menu-toggle {
      display: flex;
    }
    
    .nav-menu {
      position: fixed;
      top: 72px;
      left: -100%;
      width: 100%;
      background-color: var(--color-white);
      flex-direction: column;
      align-items: flex-start;
      padding: var(--spacing-xl);
      box-shadow: var(--shadow-lg);
      transition: left var(--transition-base);
    }
    
    .nav-menu.active {
      left: 0;
    }
    
    .navbar-actions {
      flex-direction: column;
      width: 100%;
    }
    
    .btn-youtube-header,
    .btn-whatsapp-header {
      width: 100%;
      justify-content: center;
    }
    
    .hero-container {
      grid-template-columns: 1fr;
    }
    
    .categories-grid {
      grid-template-columns: 1fr;
    }
    
    .features-grid {
      grid-template-columns: 1fr;
    }
    
    .steps-container {
      grid-template-columns: 1fr;
    }
    
    .steps-container::before {
      display: none;
    }
    
    .channels-grid {
      grid-template-columns: 1fr;
    }
    
    .video-grid {
      grid-template-columns: 1fr;
    }
    
    .text-testimonials-grid {
      grid-template-columns: 1fr;
    }
    
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .certificate-container {
      grid-template-columns: 1fr;
    }
    
    .certificate-features {
      grid-template-columns: 1fr;
    }
    
    .footer-top {
      grid-template-columns: 1fr;
    }
    
    .footer-bottom {
      flex-direction: column;
      gap: var(--spacing-md);
      text-align: center;
    }
    
    .hero-title {
      font-size: var(--font-size-3xl);
    }
    
    .section-title {
      font-size: var(--font-size-3xl);
    }
    
    .final-cta-buttons {
      flex-direction: column;
    }
  }
  

  /* ===== RESPONSIVE NAVIGATION (MOBILE) ===== */
@media (max-width: 992px) {
    .mobile-menu-toggle {
      display: flex;
      order: 3;
    }
    
    .navbar-brand {
      order: 1;
    }
    
    .navbar-actions {
      display: none;
    }
    
    .nav-menu {
      position: fixed;
      top: 72px;
      left: -100%;
      width: 100%;
      height: calc(100vh - 72px);
      background-color: var(--color-white);
      flex-direction: column;
      align-items: flex-start;
      padding: var(--spacing-xl);
      box-shadow: var(--shadow-lg);
      transition: left var(--transition-base);
      overflow-y: auto;
      z-index: 1000;
    }
    
    .nav-menu.active {
      left: 0;
    }
    
    .nav-item {
      width: 100%;
      margin-bottom: var(--spacing-sm);
    }
    
    .nav-link {
      width: 100%;
      padding: var(--spacing-md);
      font-size: var(--font-size-lg);
    }
    
    .nav-link.active {
      background-color: var(--color-primary-light);
    }
    
    /* Show CTA buttons in mobile menu */
    .nav-menu.active ~ .navbar-actions {
      display: flex;
      flex-direction: column;
      width: calc(100% - 2rem);
      position: fixed;
      bottom: var(--spacing-xl);
      left: var(--spacing-md);
      right: var(--spacing-md);
      gap: var(--spacing-md);
      z-index: 1001;
      background-color: var(--color-white);
      padding: var(--spacing-md);
      box-shadow: var(--shadow-lg);
      border-radius: var(--radius-lg);
    }
    
    .nav-menu.active ~ .navbar-actions .btn-youtube-header,
    .nav-menu.active ~ .navbar-actions .btn-whatsapp-header {
      width: 100%;
      justify-content: center;
    }
    
    /* Hamburger animation when active */
    .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
      transform: rotate(45deg) translate(7px, 7px);
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
      opacity: 0;
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
      transform: rotate(-45deg) translate(7px, -7px);
    }
  }
  
  @media (max-width: 768px) {
    .navbar {
      padding: var(--spacing-sm) 0;
    }
    
    .navbar-brand {
      font-size: var(--font-size-lg);
    }
    
    .logo-icon svg {
      width: 28px;
      height: 28px;
    }
    
    .nav-menu {
      top: 64px;
      height: calc(100vh - 64px);
    }
  }
  
  /* ===== HERO SECTION RESPONSIVE ===== */
  @media (max-width: 992px) {
    .hero-container {
      grid-template-columns: 1fr;
      gap: var(--spacing-2xl);
    }
    
    .hero-content {
      padding-right: 0;
      text-align: center;
    }
    
    .hero-badge {
      justify-content: center;
      margin-left: auto;
      margin-right: auto;
    }
    
    .hero-cta {
      justify-content: center;
    }
    
    .hero-stats {
      justify-content: center;
    }
    
    .hero-visual {
      max-width: 500px;
      margin: 0 auto;
    }
  }
  
  @media (max-width: 768px) {
    .hero-section {
      padding: var(--spacing-3xl) 0;
    }
    
    .hero-title {
      font-size: var(--font-size-3xl);
      line-height: 1.2;
    }
    
    .hero-subtitle {
      font-size: var(--font-size-base);
    }
    
    .hero-cta {
      flex-direction: column;
      width: 100%;
    }
    
    .btn-youtube-primary,
    .btn-primary {
      width: 100%;
      justify-content: center;
    }
    
    .hero-stats {
      flex-direction: column;
      gap: var(--spacing-md);
    }
    
    .btn-certificate-badge {
      position: static;
      margin-top: var(--spacing-lg);
    }
  }
  
  /* ===== CATEGORY CARDS RESPONSIVE ===== */
  @media (max-width: 992px) {
    .categories-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-lg);
    }
  }
  
  @media (max-width: 640px) {
    .categories-grid {
      grid-template-columns: 1fr;
    }
    
    .category-card {
      padding: var(--spacing-lg);
    }
  }
  
  /* ===== FEATURES GRID RESPONSIVE ===== */
  @media (max-width: 992px) {
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 640px) {
    .features-grid {
      grid-template-columns: 1fr;
    }
  }
  
  /* ===== STEPS RESPONSIVE ===== */
  @media (max-width: 992px) {
    .steps-container {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 640px) {
    .steps-container {
      grid-template-columns: 1fr;
    }
    
    .steps-container::before {
      display: none;
    }
    
    .steps-cta {
      flex-direction: column;
    }
    
    .steps-cta .btn-youtube-primary,
    .steps-cta .btn-secondary {
      width: 100%;
    }
  }
  
  /* ===== CHANNELS GRID RESPONSIVE ===== */
  @media (max-width: 992px) {
    .channels-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 640px) {
    .channels-grid {
      grid-template-columns: 1fr;
    }
  }
  
  /* ===== VIDEO & TESTIMONIALS RESPONSIVE ===== */
  @media (max-width: 992px) {
    .video-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .text-testimonials-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 640px) {
    .video-grid {
      grid-template-columns: 1fr;
    }
    
    .text-testimonials-grid {
      grid-template-columns: 1fr;
    }
    
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-md);
    }
    
    .stat-card {
      padding: var(--spacing-lg);
    }
    
    .stat-number {
      font-size: var(--font-size-4xl);
    }
  }
  
  /* ===== CERTIFICATE SECTION RESPONSIVE ===== */
  @media (max-width: 992px) {
    .certificate-container {
      grid-template-columns: 1fr;
      gap: var(--spacing-3xl);
    }
    
    .certificate-content {
      padding-left: 0;
      text-align: center;
    }
    
    .certificate-features {
      text-align: left;
    }
    
    .certificate-cta {
      justify-content: center;
    }
  }
  
  @media (max-width: 640px) {
    .certificate-features {
      grid-template-columns: 1fr;
    }
    
    .certificate-cta {
      flex-direction: column;
    }
    
    .certificate-cta .btn-primary,
    .certificate-cta .btn-outline-primary {
      width: 100%;
    }
  }
  
  /* ===== FINAL CTA RESPONSIVE ===== */
  @media (max-width: 768px) {
    .final-cta-section {
      padding: var(--spacing-3xl) 0;
    }
    
    .final-cta-title {
      font-size: var(--font-size-3xl);
    }
    
    .final-cta-description {
      font-size: var(--font-size-base);
    }
    
    .final-cta-buttons {
      flex-direction: column;
    }
    
    .final-cta-buttons .btn-white,
    .final-cta-buttons .btn-outline-white {
      width: 100%;
    }
    
    .final-cta-help {
      flex-direction: column;
      text-align: center;
    }
  }
  
  /* ===== FOOTER RESPONSIVE ===== */
  @media (max-width: 992px) {
    .footer-top {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-2xl);
    }
    
    .footer-brand {
      grid-column: 1 / -1;
      max-width: 100%;
    }
  }
  
  @media (max-width: 640px) {
    .footer-top {
      grid-template-columns: 1fr;
    }
    
    .footer-social {
      justify-content: flex-start;
    }
    
    .footer-bottom {
      flex-direction: column;
      gap: var(--spacing-md);
      text-align: center;
    }
  }
  
  /* ===== GENERAL RESPONSIVE UTILITIES ===== */
  @media (max-width: 480px) {
    .section-title {
      font-size: var(--font-size-2xl);
    }
    
    .section-description {
      font-size: var(--font-size-sm);
    }
    
    .btn {
      padding: var(--spacing-sm) var(--spacing-lg);
      font-size: var(--font-size-sm);
    }
  }

  .footer-logo .brand-name {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
  }
  

  /* ===== BACK TO TOP BUTTON ===== */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: #1F3C88; /* Your Blue */
  color: white;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  font-size: 1.2rem;
}

#back-to-top:hover {
  background-color: #111827; /* Darker on hover */
  transform: translateY(-3px);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* =========================================
   FLOATING BUTTONS (WhatsApp & Scroll Top)
   ========================================= */

/* 1. WhatsApp Float Button */
#whatsapp-float {
  position: fixed;
  bottom: 90px; /* Sits above the Back-to-Top button */
  right: 25px;
  width: 55px;
  height: 55px;
  background-color: #25d366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  z-index: 2000; /* Ensure it's on top of everything */
  transition: transform 0.3s ease;
  font-size: 30px;
}

#whatsapp-float:hover {
  transform: scale(1.1);
  background-color: #20b858;
}

/* 2. Back to Top Button */
#back-to-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 50px;
  height: 50px;
  background-color: #1F3C88;
  color: white;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  z-index: 1999; /* Just below WhatsApp */
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  font-size: 20px;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  background-color: #111827;
  transform: translateY(-5px);
}

/* 3. Mobile Optimization */
@media (max-width: 768px) {
  #whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 85px; /* Slightly lower on mobile */
    right: 20px;
    font-size: 26px;
  }

  #back-to-top {
    width: 45px;
    height: 45px;
    bottom: 25px;
    right: 20px;
    font-size: 18px;
  }
}