:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --bg-light: #f8fafc;
    --text-dark: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
  }
  
  body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
  }
  
  .navbar-custom {
    background-color: white;
    border-bottom: 1px solid var(--border-color);
  }
  
  .navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
  }
  
  .main-content {
    min-height: 100vh;
  }
  
  .content-area {
    padding: 0;
  }
  
  .btn-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
  }
  
  .btn-gradient:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    color: white;
  }
  
  .btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 18px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
  }
  
  .btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
  }
  
  .hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
  }
  
  .floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
  }
  
  .shape {
    position: absolute;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
  }
  
  .shape:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
  }
  
  .shape:nth-child(2) {
    top: 20%;
    right: 10%;
    animation-delay: 2s;
  }
  
  .shape:nth-child(3) {
    bottom: 20%;
    left: 15%;
    animation-delay: 4s;
  }
  
  @keyframes float {
  
    0%,
    100% {
      transform: translateY(0px) rotate(0deg);
    }
  
    50% {
      transform: translateY(-20px) rotate(180deg);
    }
  }
  
  .welcome-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    padding: 30px;
    color: white;
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
  }
  
  .module-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    cursor: pointer;
  }
  
  .module-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  }
  
  .module-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    margin-bottom: 15px;
  }
  
  .feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    border-radius: 16px;
    height: 100%;
  }
  
  .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  }
  
  .feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 1rem;
  }
  
  .section-padding {
    padding: 80px 0;
  }
  
  .stats-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
  }
  
  .notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* Mobile Menu Toggle Button */
  .mobile-menu-toggle {
    border: none;
    background: transparent;
    padding: 8px;
    cursor: pointer;
    position: relative;
    z-index: 1001;
  }

  .mobile-menu-icon {
    display: flex;
    flex-direction: column;
    width: 24px;
    height: 18px;
    justify-content: space-between;
  }

  .mobile-menu-icon span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  .mobile-menu-toggle.active .mobile-menu-icon span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }

  .mobile-menu-toggle.active .mobile-menu-icon span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active .mobile-menu-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
  }

  /* Mobile Menu Overlay */
  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 999;
    backdrop-filter: blur(2px);
    display: none;
  }

  @media (max-width: 991.98px) {
    .mobile-menu-overlay {
      display: block;
    }
  }

  .mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Mobile Menu */
  .mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: white;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: right 0.3s ease, visibility 0.3s ease;
    overflow-y: auto;
    display: none;
    flex-direction: column;
    visibility: hidden;
  }

  @media (max-width: 991.98px) {
    .mobile-menu {
      display: flex;
    }
  }

  .mobile-menu.active {
    right: 0;
    visibility: visible;
  }

  /* Mobile Menu Header */
  .mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    position: sticky;
    top: 0;
    z-index: 10;
  }

  .mobile-menu-brand {
    font-weight: 700;
    color: white !important;
    text-decoration: none;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
  }

  .mobile-menu-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease;
    font-size: 1.2rem;
  }

  .mobile-menu-close:hover {
    background: rgba(255, 255, 255, 0.3);
  }

  /* Mobile Menu Content */
  .mobile-menu-content {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
  }

  .mobile-nav-section {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .mobile-nav-section:last-child {
    border-bottom: none;
  }

  /* Mobile Nav Links */
  .mobile-nav-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
  }

  .mobile-nav-link i {
    font-size: 1.25rem;
    margin-right: 1rem;
    width: 24px;
    color: var(--primary-color);
  }

  .mobile-nav-link span {
    flex: 1;
  }

  .mobile-nav-link:hover,
  .mobile-nav-link.active {
    background-color: rgba(99, 102, 241, 0.08);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
  }

  .mobile-nav-link-danger {
    color: var(--danger-color);
  }

  .mobile-nav-link-danger i {
    color: var(--danger-color);
  }

  .mobile-nav-link-danger:hover,
  .mobile-nav-link-danger:active {
    background-color: rgba(239, 68, 68, 0.08);
    border-left-color: var(--danger-color);
    color: var(--danger-color);
  }

  /* Mobile User Section */
  .mobile-user-section {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    padding: 1.25rem 1.5rem;
    margin: 0;
  }

  .mobile-user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .mobile-user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
  }

  .mobile-user-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1rem;
    margin-bottom: 0.25rem;
  }

  .mobile-user-email {
    font-size: 0.875rem;
    color: var(--text-muted);
  }

  /* Mobile Auth Buttons */
  .mobile-auth-section {
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .mobile-btn {
    display: block;
    padding: 0.875rem 1.5rem;
    text-align: center;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.2s ease;
    font-size: 1rem;
  }

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

  .mobile-btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  }

  .mobile-btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
  }

  .mobile-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    color: white;
  }

  @media (max-width: 768px) {
    .hero-section {
      padding: 60px 0;
    }

    .stats-number {
      font-size: 2rem;
    }
  }

  @media (min-width: 992px) {
    .mobile-menu,
    .mobile-menu-overlay {
      display: none !important;
      visibility: hidden !important;
      opacity: 0 !important;
    }
    
    .mobile-menu-toggle {
      display: none !important;
    }
  }
  
  /* Pricing Cards Styles */
  .pricing-card {
    transition: all 0.3s ease;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
  }
  
  .pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
  }
  
  .popular-plan {
    position: relative;
    transform: scale(1.05);
  }
  
  .popular-plan:hover {
    transform: scale(1.05) translateY(-8px);
  }
  
  .popular-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 0 16px 0 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  
  .price-display {
    margin-bottom: 1rem;
  }
  
  .price-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
  }
  
  .price-period {
    font-size: 1.1rem;
    color: var(--text-muted);
    font-weight: 500;
  }
  
  .feature-list {
    text-align: left;
  }
  
  .feature-item {
    display: flex;
    align-items: flex-start;
    padding: 3px 0;
  }
  
  .feature-item i {
    margin-top: 2px;
    flex-shrink: 0;
  }
  
  .feature-item span {
    color: var(--text-dark);
    font-weight: 500;
  }
  
  .section-padding {
    padding: 80px 0;
  }
  
  .bg-purple {
    background-color: var(--secondary-color);
  }
  
  .upgrade-card {
    transition: all 0.3s ease;
  }
  
  .upgrade-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
  
  .billing-toggle .billing-btn {
      border: none;
      background: transparent;
      padding: 8px 20px;
      border-radius: 20px;
      transition: all 0.3s ease;
      font-weight: 500;
  }
  
  .billing-toggle .billing-btn.active {
      background: #6366f1;
      color: white;
      box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
  }
  
  .billing-toggle .billing-btn:not(.active) {
      color: #6b7280;
  }
  
  .billing-toggle .billing-btn:not(.active):hover {
      color: #374151;
      background: rgba(99, 102, 241, 0.1);
  }
  
  .price-amount, .price-period, .yearly-discount {
      transition: all 0.3s ease;
  }