/* =============================================
   M-Classes - Main Stylesheet
   ============================================= */

 :root {
   --primary: #3b82f6;
   --primary-dark: #1d4ed8;
   --secondary: #10b981;
   --accent: #f59e0b;
   --dark: #0f172a;
   --text: #334155;
   --text-light: #64748b;
   --bg-light: #f8f9ff;
   --white: #ffffff;
   --border: #e2e8f0;
   --shadow: 0 4px 24px rgba(59, 130, 246, 0.10);
   --shadow-hover: 0 8px 32px rgba(59, 130, 246, 0.18);
   --radius: 16px;
   --radius-sm: 10px;
 }

 * {
   box-sizing: border-box;
 }

 body {
   font-family: 'Poppins', sans-serif;
   color: var(--text);
   background: var(--white);
   margin: 0;
   scroll-behavior: smooth;
 }

 /* ---- TOP BAR ---- */
 .top-bar {
   background: var(--dark);
   color: #cbd5e1;
   font-size: 0.82rem;
   padding: 7px 0;
   z-index: 1100;
 }

 .top-bar-info span {
   display: inline-flex;
   align-items: center;
 }

 .top-social {
   color: #94a3b8;
   margin-left: 10px;
   font-size: 0.85rem;
   transition: color 0.2s;
 }

 .top-social:hover {
   color: var(--accent);
   text-decoration: none;
 }

 /* ---- NAVBAR ---- */
 .main-nav {
   background: var(--white);
   box-shadow: 0 2px 16px rgba(15, 23, 42, 0.08);
   padding: 0.6rem 0;
   z-index: 1050;
 }

 .logo-icon {
   width: 44px;
   height: 44px;
   background: linear-gradient(135deg, var(--primary), var(--primary-dark));
   color: white;
   font-size: 1.4rem;
   font-weight: 800;
   border-radius: 12px;
   display: flex;
   align-items: center;
   justify-content: center;
   box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
   flex-shrink: 0;
 }

 .brand-name {
   font-size: 1.2rem;
   font-weight: 700;
   color: var(--dark);
   line-height: 1.1;
 }

 .brand-sub {
   font-size: 0.72rem;
   color: var(--text-light);
   font-weight: 400;
   letter-spacing: 0.5px;
 }

 .main-nav .nav-link {
   color: var(--text) !important;
   font-weight: 500;
   font-size: 0.92rem;
   padding: 0.5rem 0.85rem !important;
   border-radius: 8px;
   transition: all 0.2s;
 }

 .main-nav .nav-link:hover {
   color: var(--primary) !important;
   background: #eff6ff;
 }

 .btn-demo {
   background: linear-gradient(135deg, var(--primary-dark), #173eeb);
   color: white !important;
   border: none;
   border-radius: 25px;
   padding: 0.45rem 1.3rem !important;
   font-weight: 600;
   font-size: 0.88rem;
   transition: all 0.25s;
   box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
 }

 .btn-demo:hover {
   transform: translateY(-2px);
   box-shadow: 0 6px 18px rgba(245, 158, 11, 0.4);
   color: white !important;
   text-decoration: none;
 }

 /* ---- HERO SECTION ---- */
 .hero-section {
   background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1d4ed8 100%);
   position: relative;
   overflow: hidden;
   padding: 80px 0 40px;
 }

 .min-vh-hero {
   min-height: calc(100vh - 110px);
 }

 .hero-bg-shapes {
   position: absolute;
   inset: 0;
   overflow: hidden;
   pointer-events: none;
 }

 .shape {
   position: absolute;
   border-radius: 50%;
   opacity: 0.07;
 }

 .shape-1 {
   width: 500px;
   height: 500px;
   background: var(--primary);
   top: -150px;
   right: -100px;
 }

 .shape-2 {
   width: 300px;
   height: 300px;
   background: var(--accent);
   bottom: -80px;
   left: -80px;
 }

 .shape-3 {
   width: 200px;
   height: 200px;
   background: var(--secondary);
   top: 40%;
   left: 45%;
 }

 .hero-badge {
   display: inline-flex;
   align-items: center;
   background: rgba(255, 255, 255, 0.12);
   color: #e2e8f0;
   border: 1px solid rgba(255, 255, 255, 0.2);
   padding: 6px 16px;
   border-radius: 20px;
   font-size: 0.85rem;
   font-weight: 500;
   backdrop-filter: blur(6px);
 }

 .live-dot {
   color: #4ade80;
   font-size: 0.55rem;
   animation: pulse 1.5s infinite;
 }

 a {
   text-decoration: none !important;
 }

 @keyframes pulse {

   0%,
   100% {
     opacity: 1;
   }

   50% {
     opacity: 0.3;
   }
 }

 .hero-title {
   font-size: clamp(2rem, 4.5vw, 3.2rem);
   font-weight: 800;
   color: var(--white);
   line-height: 1.2;
 }

 .highlight {
   background: linear-gradient(135deg, #60a5fa, #34d399);
   -webkit-background-clip: text;
   -webkit-text-fill-color: transparent;
   background-clip: text;
 }

 .hero-desc {
   color: #cbd5e1;
   font-size: 1.05rem;
   line-height: 1.7;
   max-width: 520px;
 }

 .feature-pill {
   display: inline-flex;
   align-items: center;
   background: rgba(255, 255, 255, 0.1);
   color: #e2e8f0;
   border: 1px solid rgba(255, 255, 255, 0.15);
   border-radius: 20px;
   padding: 5px 14px;
   font-size: 0.82rem;
   margin: 4px 6px 4px 0;
 }

 .btn-primary-custom {
   background: linear-gradient(135deg, var(--primary), var(--primary-dark));
   color: white !important;
   border: none;
   border-radius: 25px;
   padding: 0.7rem 1.8rem;
   font-weight: 600;
   font-size: 0.95rem;
   box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
   transition: all 0.25s;
 }

 .btn-primary-custom:hover {
   transform: translateY(-3px);
   box-shadow: 0 8px 24px rgba(59, 130, 246, 0.5);
   text-decoration: none;
 }

 .btn-outline-custom {
   background: transparent;
   color: white !important;
   border: 2px solid rgba(255, 255, 255, 0.5);
   border-radius: 25px;
   padding: 0.7rem 1.8rem;
   font-weight: 600;
   font-size: 0.95rem;
   transition: all 0.25s;
 }

 .btn-outline-custom:hover {
   background: rgba(255, 255, 255, 0.1);
   border-color: white;
   transform: translateY(-3px);
   text-decoration: none;
 }

 .hero-stats {
   display: inline-flex;
   align-items: center;
   background: rgba(255, 255, 255, 0.08);
   border: 1px solid rgba(255, 255, 255, 0.15);
   border-radius: 16px;
   padding: 14px 24px;
   backdrop-filter: blur(8px);
   gap: 20px;
 }

 .stat-item {
   text-align: center;
 }

 .stat-num {
   display: block;
   font-size: 1.8rem;
   font-weight: 800;
   color: white;
   line-height: 1;
 }

 .stat-label {
   font-size: 0.78rem;
   color: #94a3b8;
   text-transform: uppercase;
   letter-spacing: 0.5px;
 }

 .stat-divider {
   width: 1px;
   height: 40px;
   background: rgba(255, 255, 255, 0.2);
 }

 /* Hero Illustration */
 .hero-card-wrap {
   position: relative;
   display: inline-block;
 }

 .hero-illustration {
   position: relative;
   display: inline-flex;
   align-items: center;
   justify-content: center;
   width: 280px;
   height: 280px;
   margin: 0 auto 20px;
 }

 .illus-circle {
   width: 220px;
   height: 220px;
   background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(16, 185, 129, 0.2));
   border: 2px solid rgba(255, 255, 255, 0.15);
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   backdrop-filter: blur(8px);
 }

 .illus-icon {
   font-size: 5rem;
   color: rgba(255, 255, 255, 0.7);
 }

 .floating-badge {
   position: absolute;
   background: white;
   border-radius: 12px;
   padding: 8px 14px;
   font-size: 0.82rem;
   font-weight: 600;
   color: var(--dark);
   box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
   animation: floatBadge 3s ease-in-out infinite;
 }

 .badge-math {
   top: 10px;
   left: -10px;
   animation-delay: 0s;
 }

 .badge-sci {
   top: 10px;
   right: -10px;
   animation-delay: 0.7s;
 }

 .badge-eng {
   bottom: 20px;
   left: -10px;
   animation-delay: 1.4s;
 }

 .badge-live {
   bottom: 20px;
   right: -10px;
   animation-delay: 2.1s;
   color: #ef4444;
 }

 @keyframes floatBadge {

   0%,
   100% {
     transform: translateY(0px);
   }

   50% {
     transform: translateY(-8px);
   }
 }

 .demo-card {
   background: white;
   border-radius: var(--radius);
   box-shadow: 0 20px 48px rgba(0, 0, 0, 0.2);
   overflow: hidden;
   max-width: 280px;
   margin: 0 auto;
 }

 .demo-card-inner {
   padding: 24px;
   text-align: center;
 }

 .demo-tag {
   background: #fef3cd;
   color: #92400e;
   font-size: 0.75rem;
   font-weight: 600;
   padding: 3px 12px;
   border-radius: 20px;
   text-transform: uppercase;
   letter-spacing: 0.5px;
 }

 .demo-card h5 {
   font-weight: 700;
   color: var(--dark);
   margin: 10px 0 6px;
 }

 .demo-card p {
   color: var(--text-light);
   font-size: 0.88rem;
 }

 .demo-price {
   font-size: 1.1rem;
   font-weight: 600;
   color: var(--text);
   margin-bottom: 14px;
 }

 .demo-price span {
   font-size: 2rem;
   font-weight: 800;
   color: var(--primary);
 }

 .btn-demo-card {
   background: linear-gradient(135deg, var(--primary), var(--primary-dark));
   color: white !important;
   border: none;
   border-radius: 25px;
   padding: 0.5rem 1.6rem;
   font-weight: 600;
   font-size: 0.9rem;
   transition: all 0.25s;
   display: inline-block;
 }

 .btn-demo-card:hover {
   transform: translateY(-2px);
   box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
   text-decoration: none;
 }

 .wave-bottom {
   position: absolute;
   bottom: 0;
   left: 0;
   right: 0;
   height: 80px;
   overflow: hidden;
   line-height: 0;
 }

 .wave-bottom svg {
   width: 100%;
   height: 80px;
   display: block;
 }

 /* ---- SECTIONS ---- */
 .section-pad {
   padding: 80px 0;
 }

 .bg-light-custom {
   background: var(--bg-light);
 }

 .section-tag {
   display: inline-block;
   background: linear-gradient(135deg, #eff6ff, #dbeafe);
   color: var(--primary);
   font-size: 0.82rem;
   font-weight: 600;
   padding: 5px 16px;
   border-radius: 20px;
   letter-spacing: 0.5px;
   text-transform: uppercase;
   margin-bottom: 12px;
 }

 .section-title {
   font-size: clamp(1.6rem, 3vw, 2.2rem);
   font-weight: 800;
   color: var(--dark);
   margin-bottom: 10px;
 }

 .section-sub {
   color: var(--text-light);
   font-size: 1rem;
   max-width: 520px;
   margin: 0 auto;
 }

 /* ---- FEATURE CARDS ---- */
 .feature-card {
   background: var(--white);
   border-radius: var(--radius);
   padding: 28px 24px;
   text-align: center;
   box-shadow: var(--shadow);
   border: 1px solid var(--border);
   transition: all 0.3s ease;
   height: 100%;
 }

 .feature-card:hover {
   transform: translateY(-6px);
   box-shadow: var(--shadow-hover);
 }

 .feature-icon-wrap {
   width: 64px;
   height: 64px;
   border-radius: 18px;
   display: flex;
   align-items: center;
   justify-content: center;
   margin: 0 auto 16px;
   font-size: 1.6rem;
 }

 .feature-card h5 {
   font-weight: 700;
   color: var(--dark);
   margin-bottom: 8px;
 }

 .feature-card p {
   color: var(--text-light);
   font-size: 0.9rem;
   margin: 0;
 }

 /* Demo Banner */
 .demo-banner {
   background: linear-gradient(135deg, var(--primary), var(--primary-dark));
   color: white;
   border-radius: var(--radius);
   padding: 28px 36px;
   box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
 }

 .demo-banner h4 {
   font-weight: 700;
 }

 .demo-banner p {
   opacity: 0.85;
 }

 .btn-white-demo {
   background: white;
   color: var(--primary) !important;
   border: none;
   border-radius: 25px;
   padding: 0.6rem 1.6rem;
   font-weight: 700;
   font-size: 0.95rem;
   transition: all 0.25s;
 }

 .btn-white-demo:hover {
   transform: translateY(-2px);
   box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
   text-decoration: none;
 }

 /* ---- PRICING CARDS ---- */
 .price-card {
   background: var(--white);
   border-radius: var(--radius);
   box-shadow: var(--shadow);
   border: 1px solid var(--border);
   overflow: hidden;
   transition: all 0.3s ease;
   position: relative;
   height: 100%;
 }

 .price-card:hover {
   transform: translateY(-8px);
   box-shadow: var(--shadow-hover);
 }

 .price-card.popular {
   border: 2px solid var(--secondary);
   transform: translateY(-8px);
   box-shadow: 0 12px 40px rgba(16, 185, 129, 0.2);
 }

 .price-card.popular:hover {
   transform: translateY(-14px);
 }

 .popular-badge {
   position: absolute;
   top: 14px;
   right: 14px;
   background: white;
   color: var(--secondary);
   font-size: 0.72rem;
   font-weight: 700;
   padding: 4px 12px;
   border-radius: 20px;
   text-transform: uppercase;
   letter-spacing: 0.5px;
   z-index: 2;
 }

 .price-card-header {
   padding: 28px 24px 24px;
   text-align: center;
   color: white;
 }

 .price-icon {
   width: 56px;
   height: 56px;
   background: rgba(255, 255, 255, 0.2);
   border-radius: 16px;
   display: flex;
   align-items: center;
   justify-content: center;
   margin: 0 auto;
   font-size: 1.5rem;
 }

 .price-card-header h5 {
   font-weight: 700;
   margin-bottom: 4px;
 }

 .price-card-header p {
   opacity: 0.85;
   font-size: 0.9rem;
 }

 .price-card-body {
   padding: 24px;
 }

 .price-amount {
   font-size: 2.4rem;
   font-weight: 800;
   color: var(--dark);
   margin-bottom: 18px;
   text-align: center;
 }

 .price-amount span {
   font-size: 1rem;
   font-weight: 500;
   color: var(--text-light);
 }

 .price-features {
   list-style: none;
   padding: 0;
   margin-bottom: 24px;
 }

 .price-features li {
   display: flex;
   align-items: center;
   gap: 10px;
   padding: 7px 0;
   color: var(--text);
   font-size: 0.9rem;
   border-bottom: 1px solid #f1f5f9;
 }

 .price-features li:last-child {
   border-bottom: none;
 }

 .price-features li i {
   color: var(--secondary);
   font-size: 0.9rem;
   flex-shrink: 0;
 }

 .btn-plan {
   display: block;
   width: 100%;
   border: none;
   border-radius: 25px;
   padding: 0.65rem;
   font-weight: 700;
   font-size: 0.95rem;
   text-align: center;
   transition: all 0.25s;
 }

 .btn-plan:hover {
   transform: translateY(-2px);
   text-decoration: none;
 }

 .btn-plan-blue {
   background: linear-gradient(135deg, #3b82f6, #1d4ed8);
   color: white !important;
   box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
 }

 .btn-plan-green {
   background: linear-gradient(135deg, #10b981, #065f46);
   color: white !important;
   box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
 }

 .btn-plan-orange {
   background: linear-gradient(135deg, #f59e0b, #b45309);
   color: white !important;
   box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
 }

 /* Demo Plan Card */
 .demo-plan-card {
   background: linear-gradient(135deg, #fffbeb, #fef3cd);
   border: 2px solid #fde68a;
   border-radius: var(--radius);
   padding: 24px 28px;
   box-shadow: 0 4px 20px rgba(245, 158, 11, 0.15);
 }

 .demo-plan-icon {
   width: 52px;
   height: 52px;
   background: linear-gradient(135deg, #f59e0b, #d97706);
   color: white;
   border-radius: 14px;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 1.4rem;
   margin: 0 auto;
 }

 .demo-plan-price {
   font-size: 1.8rem;
   font-weight: 800;
   color: var(--dark);
 }

 .btn-demo-sm {
   background: linear-gradient(135deg, #f59e0b, #d97706);
   color: white !important;
   border: none;
   border-radius: 20px;
   padding: 0.4rem 1.2rem;
   font-weight: 600;
   transition: all 0.2s;
 }

 .btn-demo-sm:hover {
   transform: translateY(-2px);
   text-decoration: none;
 }

 /* ---- BOARDS SECTION ---- */
 .boards-section {
   background: var(--white);
 }

 .board-card {
   background: var(--white);
   border-radius: var(--radius);
   padding: 28px 20px;
   text-align: center;
   box-shadow: var(--shadow);
   border: 1px solid var(--border);
   transition: all 0.3s;
   height: 100%;
 }

 .board-card:hover {
   transform: translateY(-6px);
   box-shadow: var(--shadow-hover);
 }

 .board-icon {
   width: 64px;
   height: 64px;
   border-radius: 18px;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 1.6rem;
   margin: 0 auto 14px;
 }

 .board-card h6 {
   font-weight: 700;
   color: var(--dark);
   margin-bottom: 8px;
 }

 .board-tag {
   background: var(--bg-light);
   color: var(--primary);
   font-size: 0.78rem;
   font-weight: 700;
   padding: 3px 14px;
   border-radius: 20px;
   letter-spacing: 0.5px;
 }

 .medium-card {
   background: linear-gradient(135deg, #eff6ff, #dbeafe);
   border-radius: var(--radius);
   padding: 28px 36px;
   text-align: center;
   border: 1px solid #bfdbfe;
 }

 .medium-card h5 {
   font-weight: 700;
   color: var(--dark);
 }

 .medium-badge {
   display: inline-flex;
   align-items: center;
   background: white;
   border-radius: 25px;
   padding: 8px 22px;
   font-size: 0.95rem;
   font-weight: 600;
   color: var(--dark);
   margin: 6px 10px;
   box-shadow: 0 2px 8px rgba(59, 130, 246, 0.12);
 }

 /* ---- CLASS GRID ---- */
 .class-grid {
   display: flex;
   justify-content: center;
   flex-wrap: wrap;
   gap: 14px;
 }

 .class-item {
   width: 90px;
   height: 90px;
   background: white;
   border-radius: 18px;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 1.35rem;
   font-weight: 800;
   color: var(--primary);
   border: 2px solid #dbeafe;
   box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
   transition: all 0.3s;
   cursor: default;
 }

 .class-item:hover {
   transform: translateY(-4px) scale(1.05);
   box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
   border-color: var(--primary);
 }

 .class-item.primary-class {
   background: linear-gradient(135deg, var(--primary), var(--primary-dark));
   color: white;
   border-color: transparent;
   box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
 }

 .class-item sup {
   font-size: 0.65rem;
 }

 /* ---- CONTACT SECTION ---- */
 .contact-info-wrap {
   background: linear-gradient(135deg, var(--dark), #1e3a5f);
   color: white;
   border-radius: var(--radius);
   padding: 36px 32px;
   height: 100%;
 }

 .contact-info-wrap h4 {
   font-weight: 700;
 }

 .contact-item {
   display: flex;
   gap: 16px;
   margin-bottom: 22px;
   align-items: flex-start;
 }

 .contact-icon-wrap {
   width: 44px;
   height: 44px;
   background: rgba(255, 255, 255, 0.1);
   border-radius: 12px;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 1rem;
   color: #60a5fa;
   flex-shrink: 0;
 }

 .contact-item strong {
   display: block;
   font-weight: 600;
   margin-bottom: 4px;
   font-size: 0.85rem;
   color: #94a3b8;
   letter-spacing: 0.5px;
   text-transform: uppercase;
 }

 .contact-item p,
 .contact-item a {
   color: #e2e8f0;
   font-size: 0.92rem;
   text-decoration: none;
 }

 .contact-item a:hover {
   color: #60a5fa;
 }

 .social-links {
   display: flex;
   gap: 10px;
 }

 .social-btn {
   width: 40px;
   height: 40px;
   border-radius: 10px;
   display: flex;
   align-items: center;
   justify-content: center;
   color: white;
   font-size: 0.95rem;
   transition: all 0.25s;
   text-decoration: none;
 }

 .social-btn.facebook {
   background: #1877f2;
 }

 .social-btn.youtube {
   background: #ff0000;
 }

 .social-btn.whatsapp {
   background: #25d366;
 }

 .social-btn.instagram {
   background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
 }

 .social-btn:hover {
   transform: translateY(-3px);
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
 }

 .contact-form-wrap {
   background: white;
   border-radius: var(--radius);
   padding: 36px 32px;
   box-shadow: var(--shadow);
   border: 1px solid var(--border);
 }

 .contact-form-wrap h4 {
   font-weight: 700;
   color: var(--dark);
 }

 label {
   font-size: 0.85rem;
   font-weight: 600;
   color: var(--text);
   margin-bottom: 6px;
 }

 .custom-input {
   border: 1.5px solid var(--border) !important;
   border-radius: var(--radius-sm) !important;
   padding: 0.65rem 1rem !important;
   font-family: 'Poppins', sans-serif !important;
   font-size: 0.9rem !important;
   color: var(--text) !important;
   transition: border-color 0.2s, box-shadow 0.2s !important;
 }

 .custom-input:focus {
   border-color: var(--primary) !important;
   box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12) !important;
   outline: none !important;
 }

 .btn-submit-form {
   background: linear-gradient(135deg, var(--primary), var(--primary-dark));
   color: white !important;
   border: none;
   border-radius: 25px;
   padding: 0.75rem;
   font-weight: 700;
   font-size: 1rem;
   box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
   transition: all 0.25s;
 }

 .btn-submit-form:hover {
   transform: translateY(-2px);
   box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
 }

 /* ---- FOOTER ---- */
 .main-footer {
   background: var(--dark);
   color: #94a3b8;
   padding: 56px 0 28px;
 }

 .footer-desc {
   font-size: 0.88rem;
   line-height: 1.7;
   color: #64748b;
 }

 .footer-heading {
   color: white;
   font-weight: 700;
   font-size: 0.95rem;
   text-transform: uppercase;
   letter-spacing: 0.5px;
   margin-bottom: 16px;
 }

 .footer-links {
   list-style: none;
   padding: 0;
 }

 .footer-links li {
   margin-bottom: 8px;
 }

 .footer-links a {
   color: #64748b;
   font-size: 0.88rem;
   text-decoration: none;
   transition: color 0.2s;
 }

 .footer-links a:hover {
   color: #60a5fa;
 }

 .footer-contact-item {
   display: flex;
   gap: 12px;
   align-items: flex-start;
   margin-bottom: 12px;
   font-size: 0.88rem;
   color: #64748b;
 }

 .footer-contact-item i {
   color: #3b82f6;
   margin-top: 3px;
   flex-shrink: 0;
 }

 .footer-divider {
   border-color: #1e293b;
   margin: 28px 0 20px;
 }

 .footer-copy {
   color: #475569;
   font-size: 0.85rem;
 }

 .footer-social {
   width: 34px;
   height: 34px;
   background: #1e293b;
   color: #64748b;
   border-radius: 8px;
   display: inline-flex;
   align-items: center;
   justify-content: center;
   font-size: 0.85rem;
   margin-left: 8px;
   text-decoration: none;
   transition: all 0.2s;
 }

 .footer-social:hover {
   background: var(--primary);
   color: white;
   transform: translateY(-2px);
 }

 /* ---- BACK TO TOP ---- */
 .back-to-top {
   position: fixed;
   bottom: 90px;
   right: 24px;
   width: 44px;
   height: 44px;
   background: var(--primary);
   color: white;
   border: none;
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   cursor: pointer;
   box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
   transition: all 0.3s;
   opacity: 0;
   visibility: hidden;
   z-index: 999;
   font-size: 1rem;
 }

 .back-to-top.show {
   opacity: 1;
   visibility: visible;
 }

 .back-to-top:hover {
   transform: translateY(-3px);
   box-shadow: 0 8px 24px rgba(59, 130, 246, 0.5);
 }

 /* ---- WHATSAPP FLOAT ---- */
 .whatsapp-float {
   position: fixed;
   bottom: 24px;
   right: 24px;
   width: 54px;
   height: 54px;
   background: #25d366;
   color: white;
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   font-size: 1.6rem;
   text-decoration: none;
   box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
   transition: all 0.3s;
   z-index: 999;
   animation: whatsappPop 2s ease-in-out infinite;
 }

 @keyframes whatsappPop {

   0%,
   100% {
     transform: scale(1);
   }

   50% {
     transform: scale(1.08);
   }
 }

 .whatsapp-float:hover {
   transform: scale(1.12) translateY(-3px);
   box-shadow: 0 10px 32px rgba(37, 211, 102, 0.55);
   color: white;
   animation: none;
 }

 /* ---- FORM SUCCESS ---- */
 .form-success {
   background: #d1fae5;
   border: 1px solid #6ee7b7;
   color: #065f46;
   border-radius: var(--radius-sm);
   padding: 14px 20px;
   text-align: center;
   font-weight: 500;
   margin-top: 16px;
   display: none;
 }

 /* ---- RESPONSIVE ---- */
 @media (max-width: 991px) {
   .hero-section {
     padding: 60px 0 60px;
   }

   .min-vh-hero {
     min-height: auto;
   }

   .hero-stats {
     flex-wrap: wrap;
     gap: 16px;
   }

   .hero-illustration {
     width: 220px;
     height: 220px;
   }

   .illus-circle {
     width: 170px;
     height: 170px;
   }

   .illus-icon {
     font-size: 3.8rem;
   }

   .floating-badge {
     font-size: 0.75rem;
     padding: 6px 10px;
   }

   .price-card.popular {
     transform: none;
   }
 }

 @media (max-width: 767px) {
   .section-pad {
     padding: 56px 0;
   }

   .hero-title {
     font-size: 1.9rem;
   }

   .demo-banner {
     padding: 22px 20px;
   }

   .contact-info-wrap,
   .contact-form-wrap {
     padding: 24px 20px;
   }

   .class-item {
     width: 76px;
     height: 76px;
     font-size: 1.1rem;
   }
 }

 @media (max-width: 575px) {
   .hero-stats .stat-divider {
     display: none;
   }

   .hero-stats {
     gap: 10px;
   }
 }