/* ===== Variables ===== */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #0f0f2a;
  --glass-bg: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.08);
  --neon-blue: #00d4ff;
  --neon-purple: #7b2ff7;
  --neon-pink: #ff2d95;
  --gradient: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
  --text-primary: #fff;
  --text-secondary: #a0a0c0;
  --text-muted: #6a6a8a;
  --font: 'Inter', -apple-system, sans-serif;
  --radius: 16px;
  --shadow-glow: 0 0 30px rgba(0,212,255,0.15);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --nav-h: 72px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top: var(--nav-h); }
body { font-family:var(--font); background:var(--bg-primary); color:var(--text-primary); line-height:1.6; overflow-x:hidden; }
a { text-decoration:none; color:inherit; }
ul { list-style:none; }
.container { max-width:1200px; margin:0 auto; padding:0 20px; }
.section { padding:100px 0; }
.section-alt { background:var(--bg-secondary); }
.gradient-text { background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.glass { background:var(--glass-bg); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); border:1px solid var(--glass-border); border-radius:var(--radius); }

/* ===== Loader ===== */
#page-loader { position:fixed; inset:0; background:var(--bg-primary); display:flex; align-items:center; justify-content:center; z-index:10000; transition:opacity .5s,visibility .5s; }
#page-loader.hidden { opacity:0; visibility:hidden; }
.loader-content { display:flex; flex-direction:column; align-items:center; gap:20px; }
.loader-spinner { width:50px; height:50px; border:3px solid rgba(0,212,255,0.1); border-top-color:var(--neon-blue); border-radius:50%; animation:spin .8s linear infinite; }
.loader-text { font-size:1.5rem; font-weight:800; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; letter-spacing:3px; text-transform:uppercase; }
@keyframes spin { to { transform:rotate(360deg); } }

/* ===== Navbar ===== */
#navbar { position:fixed; top:0; left:0; width:100%; height:var(--nav-h); z-index:1000; transition:var(--transition); background:transparent; }
#navbar.scrolled { background:rgba(10,10,26,0.85); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); border-bottom:1px solid var(--glass-border); box-shadow:0 4px 30px rgba(0,0,0,0.2); }
.nav-container { max-width:1200px; margin:0 auto; padding:0 20px; height:100%; display:flex; align-items:center; justify-content:space-between; }
.nav-logo { display:flex; align-items:center; gap:10px; font-size:1.4rem; font-weight:800; z-index:1001; }
.logo-icon { display:flex; align-items:center; justify-content:center; width:38px; height:38px; background:var(--gradient); border-radius:10px; font-size:1rem; }
.logo-text { background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.nav-links { display:flex; align-items:center; gap:8px; }
.nav-link { padding:8px 16px; border-radius:8px; font-size:.9rem; font-weight:500; color:var(--text-secondary); transition:var(--transition); }
.nav-link:hover, .nav-link.active { color:var(--text-primary); background:rgba(0,212,255,0.08); }
.nav-link.active { color:var(--neon-blue); }
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; z-index:1001; padding:4px; }
.nav-toggle span { width:24px; height:2px; background:var(--text-primary); border-radius:2px; transition:var(--transition); }
.nav-toggle.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity:0; }
.nav-toggle.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* ===== Buttons ===== */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:14px 32px; border-radius:12px; font-size:1rem; font-weight:600; cursor:pointer; transition:var(--transition); position:relative; overflow:hidden; border:none; font-family:var(--font); }
.btn-primary { background:var(--gradient); color:#fff; box-shadow:0 4px 20px rgba(0,212,255,0.25); }
.btn-primary:hover { box-shadow:0 6px 30px rgba(0,212,255,0.4); transform:translateY(-2px); }
.btn-outline { background:transparent; color:var(--text-primary); border:2px solid rgba(0,212,255,0.4); }
.btn-outline:hover { border-color:var(--neon-blue); background:rgba(0,212,255,0.08); transform:translateY(-2px); }
.btn-full { width:100%; }
.ripple { position:relative; overflow:hidden; }
.ripple-effect { position:absolute; border-radius:50%; background:rgba(255,255,255,0.3); transform:scale(0); animation:ripple-anim .6s ease-out; pointer-events:none; }
@keyframes ripple-anim { to { transform:scale(4); opacity:0; } }

/* ===== Section Header ===== */
.section-header { text-align:center; margin-bottom:60px; }
.section-tag { display:inline-block; padding:6px 18px; background:rgba(0,212,255,0.1); border:1px solid rgba(0,212,255,0.2); border-radius:50px; font-size:.8rem; font-weight:600; color:var(--neon-blue); text-transform:uppercase; letter-spacing:1.5px; margin-bottom:16px; }
.section-title { font-size:clamp(2rem,4vw,2.8rem); font-weight:800; line-height:1.2; margin-bottom:16px; }
.section-desc { font-size:1.05rem; color:var(--text-secondary); max-width:540px; margin:0 auto; }

/* ===== Hero ===== */
#hero { position:relative; min-height:100vh; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.hero-bg { position:absolute; inset:0; background:radial-gradient(ellipse at 20% 50%,rgba(123,47,247,0.15) 0%,transparent 50%),radial-gradient(ellipse at 80% 50%,rgba(0,212,255,0.12) 0%,transparent 50%),radial-gradient(ellipse at 50% 0%,rgba(255,45,149,0.08) 0%,transparent 50%),var(--bg-primary); z-index:0; }
.hero-particles { position:absolute; inset:0; z-index:1; pointer-events:none; }
.hero-particle { position:absolute; width:3px; height:3px; background:var(--neon-blue); border-radius:50%; opacity:0; animation:float-p 6s infinite; }
@keyframes float-p { 0%{opacity:0;transform:translateY(0) scale(0)} 20%{opacity:.6;transform:translateY(-30px) scale(1)} 100%{opacity:0;transform:translateY(-200px) scale(0)} }
.hero-content { position:relative; z-index:2; text-align:center; padding:0 20px; max-width:800px; }
.hero-title { font-size:clamp(2.2rem,6vw,4rem); font-weight:900; line-height:1.15; margin-bottom:20px; letter-spacing:-0.02em; }
.hero-subtitle { font-size:clamp(1rem,2vw,1.2rem); color:var(--text-secondary); margin-bottom:36px; max-width:600px; margin-left:auto; margin-right:auto; line-height:1.7; }
.hero-buttons { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin-bottom:60px; }
.hero-stats { display:flex; justify-content:center; gap:40px; flex-wrap:wrap; }
.stat { text-align:center; }
.stat-number { font-size:2.2rem; font-weight:800; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-plus { font-size:1.4rem; font-weight:700; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { display:block; font-size:.85rem; color:var(--text-muted); margin-top:4px; }
.scroll-indicator { position:absolute; bottom:30px; left:50%; transform:translateX(-50%); z-index:2; animation:bounce-d 2s infinite; }
.mouse { width:26px; height:40px; border:2px solid rgba(255,255,255,0.3); border-radius:13px; display:flex; justify-content:center; padding-top:8px; }
.mouse-wheel { width:3px; height:8px; background:var(--neon-blue); border-radius:2px; animation:scroll-w 1.5s infinite; }
@keyframes scroll-w { 0%{opacity:1;transform:translateY(0)} 100%{opacity:0;transform:translateY(10px)} }
@keyframes bounce-d { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(10px)} }

/* ===== Courses ===== */
.courses-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(320px,1fr)); gap:24px; }
.course-card { padding:32px 28px; position:relative; transition:var(--transition); overflow:hidden; }
.course-card::before { content:''; position:absolute; inset:0; border-radius:var(--radius); padding:1px; background:var(--gradient); -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0); -webkit-mask-composite:xor; mask-composite:exclude; opacity:0; transition:var(--transition); }
.course-card:hover::before { opacity:1; }
.course-card:hover { transform:translateY(-8px) scale(1.02); box-shadow:var(--shadow-glow); }
.course-card.featured { border:1px solid rgba(0,212,255,0.2); }
.card-badge { position:absolute; top:16px; right:16px; padding:4px 14px; border-radius:50px; font-size:.72rem; font-weight:700; text-transform:uppercase; letter-spacing:1px; background:rgba(0,212,255,0.1); color:var(--neon-blue); border:1px solid rgba(0,212,255,0.2); }
.featured-badge { background:var(--gradient); color:#fff; border:none; }
.card-icon { width:56px; height:56px; display:flex; align-items:center; justify-content:center; background:rgba(0,212,255,0.1); border-radius:14px; font-size:1.4rem; color:var(--neon-blue); margin-bottom:20px; }
.card-title { font-size:1.3rem; font-weight:700; margin-bottom:16px; }
.card-features { margin-bottom:20px; }
.card-features li { display:flex; align-items:center; gap:10px; padding:6px 0; font-size:.9rem; color:var(--text-secondary); }
.card-features li i { color:var(--neon-blue); font-size:.75rem; }
.card-meta { display:flex; justify-content:space-between; align-items:center; padding:16px 0; margin-bottom:16px; border-top:1px solid var(--glass-border); border-bottom:1px solid var(--glass-border); }
.card-meta span { display:flex; align-items:center; gap:6px; font-size:.9rem; color:var(--text-secondary); }
.card-price { font-size:1.3rem!important; font-weight:800!important; color:var(--neon-blue)!important; }

/* ===== About ===== */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.about-image { position:relative; }
.about-img-wrapper { width:100%; aspect-ratio:4/3; border-radius:var(--radius); overflow:hidden; display:flex; align-items:center; justify-content:center; }
.about-img-placeholder { display:flex; flex-direction:column; align-items:center; gap:12px; color:var(--text-muted); }
.about-img-placeholder i { font-size:3rem; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.about-img-placeholder span { font-size:.9rem; }
.about-experience { position:absolute; bottom:-20px; right:-20px; padding:20px 28px; text-align:center; border:1px solid rgba(0,212,255,0.2); }
.exp-number { display:block; font-size:2rem; font-weight:900; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.exp-text { font-size:.8rem; color:var(--text-secondary); }
.about-content .section-tag { margin-bottom:12px; }
.about-content .section-title { text-align:left; }
.about-text { color:var(--text-secondary); font-size:1.05rem; line-height:1.8; margin-bottom:32px; }
.about-features { display:flex; flex-direction:column; gap:20px; }
.about-feature { display:flex; gap:16px; align-items:flex-start; }
.feature-icon { width:48px; height:48px; min-width:48px; display:flex; align-items:center; justify-content:center; background:rgba(0,212,255,0.1); border-radius:12px; font-size:1.1rem; color:var(--neon-blue); }
.about-feature h4 { font-size:1rem; font-weight:700; margin-bottom:4px; }
.about-feature p { font-size:.88rem; color:var(--text-muted); line-height:1.5; }

/* ===== Results / Carousel ===== */
.carousel-wrapper { position:relative; overflow:hidden; padding:0 0 60px; }
.carousel-track { display:flex; transition:transform .5s cubic-bezier(0.4,0,0.2,1); }
.testimonial-card { min-width:100%; padding:36px 32px; margin:0 12px; box-sizing:border-box; flex-shrink:0; }
@media(min-width:768px) { .testimonial-card { min-width:calc(50% - 24px); } }
@media(min-width:1024px) { .testimonial-card { min-width:calc(33.333% - 32px); } }
.testimonial-stars { display:flex; gap:4px; margin-bottom:16px; color:#ffc107; font-size:.9rem; }
.testimonial-text { font-size:1rem; line-height:1.7; color:var(--text-secondary); margin-bottom:24px; font-style:italic; }
.testimonial-author { display:flex; align-items:center; gap:14px; }
.author-avatar { width:48px; height:48px; border-radius:50%; background:var(--gradient); display:flex; align-items:center; justify-content:center; font-size:1.1rem; }
.testimonial-author h5 { font-size:.95rem; font-weight:700; }
.testimonial-author span { font-size:.8rem; color:var(--text-muted); }
.carousel-controls { display:flex; align-items:center; justify-content:center; gap:16px; margin-top:32px; }
.carousel-btn { width:44px; height:44px; border-radius:50%; background:var(--glass-bg); border:1px solid var(--glass-border); color:var(--text-primary); cursor:pointer; transition:var(--transition); display:flex; align-items:center; justify-content:center; font-size:.9rem; }
.carousel-btn:hover { background:rgba(0,212,255,0.1); border-color:rgba(0,212,255,0.3); color:var(--neon-blue); }
.carousel-dots { display:flex; gap:8px; }
.carousel-dot { width:10px; height:10px; border-radius:50%; background:var(--glass-border); cursor:pointer; transition:var(--transition); border:none; }
.carousel-dot.active { background:var(--neon-blue); box-shadow:0 0 10px rgba(0,212,255,0.4); }

/* ===== Gallery ===== */
.gallery-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:20px; }
.gallery-item { aspect-ratio:4/3; overflow:hidden; position:relative; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:var(--transition); }
.gallery-item::after { content:''; position:absolute; inset:0; background:var(--gradient); opacity:0; transition:var(--transition); z-index:1; }
.gallery-item:hover::after { opacity:.15; }
.gallery-item:hover { transform:scale(1.03); box-shadow:var(--shadow-glow); }
.gallery-placeholder { display:flex; flex-direction:column; align-items:center; gap:10px; color:var(--text-muted); z-index:2; }
.gallery-placeholder i { font-size:2.5rem; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.gallery-placeholder span { font-size:.85rem; }

/* ===== Contact ===== */
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start; }
.contact-form-wrapper { padding:36px; position:relative; }
.contact-form { display:flex; flex-direction:column; gap:20px; }
.form-group { display:flex; flex-direction:column; gap:6px; }
.form-group label { font-size:.85rem; font-weight:600; color:var(--text-secondary); }
.form-group input { padding:14px 18px; background:rgba(255,255,255,0.04); border:1px solid var(--glass-border); border-radius:12px; color:var(--text-primary); font-size:1rem; font-family:var(--font); transition:var(--transition); outline:none; }
.form-group input:focus { border-color:var(--neon-blue); box-shadow:0 0 0 3px rgba(0,212,255,0.1); }
.form-group input::placeholder { color:var(--text-muted); }
.form-success { display:none; text-align:center; padding:40px 20px; }
.form-success.show { display:block; }
.form-success i { font-size:3rem; color:var(--neon-blue); margin-bottom:12px; }
.form-success p { color:var(--text-secondary); font-size:1.1rem; }
.contact-info { display:flex; flex-direction:column; gap:16px; }
.contact-map { overflow:hidden; }
.contact-details { display:flex; flex-direction:column; gap:12px; }
.contact-detail { display:flex; align-items:center; gap:14px; padding:16px 20px; transition:var(--transition); }
.contact-detail i { font-size:1.1rem; color:var(--neon-blue); }
.contact-detail span { font-size:.95rem; color:var(--text-secondary); }
.contact-detail:hover { border-color:rgba(0,212,255,0.3); background:rgba(0,212,255,0.05); }

/* ===== Footer ===== */
#footer { background:var(--bg-secondary); border-top:1px solid var(--glass-border); padding:60px 0 0; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr; gap:40px; margin-bottom:40px; }
.footer-brand p { color:var(--text-muted); margin-top:14px; font-size:.9rem; line-height:1.7; max-width:300px; }
.footer-links { display:flex; flex-direction:column; gap:10px; }
.footer-links h4, .footer-social h4 { font-size:1rem; font-weight:700; margin-bottom:14px; }
.footer-links a { color:var(--text-muted); font-size:.9rem; transition:var(--transition); }
.footer-links a:hover { color:var(--neon-blue); }
.social-icons { display:flex; gap:12px; }
.social-icons a { width:40px; height:40px; display:flex; align-items:center; justify-content:center; border-radius:10px; background:var(--glass-bg); border:1px solid var(--glass-border); color:var(--text-secondary); transition:var(--transition); font-size:.95rem; }
.social-icons a:hover { background:rgba(0,212,255,0.1); border-color:rgba(0,212,255,0.3); color:var(--neon-blue); }
.footer-bottom { border-top:1px solid var(--glass-border); padding:20px 0; text-align:center; }
.footer-bottom p { font-size:.85rem; color:var(--text-muted); }

/* ===== WhatsApp Float ===== */
.whatsapp-float { position:fixed; bottom:24px; right:24px; width:60px; height:60px; background:#25d366; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1.8rem; color:#fff; z-index:999; box-shadow:0 4px 20px rgba(37,211,102,0.4); transition:var(--transition); }
.whatsapp-float:hover { transform:scale(1.1); box-shadow:0 6px 30px rgba(37,211,102,0.5); }
.whatsapp-tooltip { position:absolute; right:70px; background:var(--bg-secondary); color:var(--text-primary); padding:8px 16px; border-radius:8px; font-size:.8rem; font-weight:600; white-space:nowrap; opacity:0; visibility:hidden; transition:var(--transition); border:1px solid var(--glass-border); }
.whatsapp-float:hover .whatsapp-tooltip { opacity:1; visibility:visible; }

/* ===== Back to Top ===== */
.back-to-top { position:fixed; bottom:96px; right:28px; width:44px; height:44px; border-radius:50%; background:var(--glass-bg); border:1px solid var(--glass-border); color:var(--text-primary); cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:.9rem; z-index:998; opacity:0; visibility:hidden; transition:var(--transition); backdrop-filter:blur(10px); }
.back-to-top.show { opacity:1; visibility:visible; }
.back-to-top:hover { background:rgba(0,212,255,0.1); border-color:rgba(0,212,255,0.3); color:var(--neon-blue); }

/* ===== Responsive ===== */
@media(max-width:992px) {
  .about-grid { grid-template-columns:1fr; gap:40px; }
  .about-experience { right:20px; bottom:-10px; }
  .contact-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
}

@media(max-width:768px) {
  .nav-links { position:fixed; top:0; right:-100%; width:280px; height:100vh; background:rgba(10,10,26,0.98); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px); flex-direction:column; padding:100px 30px 30px; gap:8px; transition:var(--transition); border-left:1px solid var(--glass-border); }
  .nav-links.open { right:0; }
  .nav-toggle { display:flex; }
  .hero-stats { gap:24px; }
  .stat-number { font-size:1.6rem; }
  .courses-grid { grid-template-columns:1fr; }
  .gallery-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr; gap:30px; }
  .section { padding:70px 0; }
}

@media(max-width:480px) {
  .hero-buttons { flex-direction:column; align-items:center; }
  .hero-buttons .btn { width:100%; max-width:280px; }
  .gallery-grid { grid-template-columns:1fr; }
  .hero-stats { gap:16px; }
  .stat { min-width:80px; }
}

/* ===== Gallery Loader ===== */
.gallery-loader { display:flex; flex-direction:column; align-items:center; justify-content:center; gap:16px; padding:60px 20px; }
.gallery-loader .loader-spinner { width:40px; height:40px; }
.gallery-loader p { color:var(--text-muted); font-size:.9rem; }
.gallery-loader.hidden { display:none; }

/* Dynamic Gallery Images */
.gallery-item img { width:100%; height:100%; object-fit:cover; border-radius:var(--radius); }

/* ===== Lightbox ===== */
.lightbox { position:fixed; inset:0; background:rgba(0,0,0,0.95); z-index:2000; display:none; align-items:center; justify-content:center; opacity:0; transition:opacity .3s; }
.lightbox.active { display:flex; opacity:1; }
.lightbox-content { max-width:90vw; max-height:90vh; display:flex; align-items:center; justify-content:center; }
.lightbox-content img { max-width:100%; max-height:90vh; object-fit:contain; border-radius:8px; box-shadow:0 20px 60px rgba(0,0,0,0.5); }
.lightbox-close { position:absolute; top:20px; right:20px; width:44px; height:44px; background:rgba(255,255,255,0.1); border:1px solid rgba(255,255,255,0.2); border-radius:50%; color:#fff; cursor:pointer; transition:var(--transition); display:flex; align-items:center; justify-content:center; font-size:1.2rem; backdrop-filter:blur(10px); }
.lightbox-close:hover { background:rgba(255,255,255,0.2); transform:rotate(90deg); }
.lightbox-prev, .lightbox-next { position:absolute; top:50%; transform:translateY(-50%); width:50px; height:50px; background:rgba(255,255,255,0.1); border:1px solid rgba(255,255,255,0.2); border-radius:50%; color:#fff; cursor:pointer; transition:var(--transition); display:flex; align-items:center; justify-content:center; font-size:1.2rem; backdrop-filter:blur(10px); }
.lightbox-prev { left:20px; }
.lightbox-next { right:20px; }
.lightbox-prev:hover, .lightbox-next:hover { background:rgba(255,255,255,0.2); }
.lightbox-counter { position:absolute; bottom:20px; left:50%; transform:translateX(-50%); background:rgba(0,0,0,0.5); padding:8px 20px; border-radius:50px; color:var(--text-secondary); font-size:.9rem; backdrop-filter:blur(10px); border:1px solid rgba(255,255,255,0.1); }
@media(max-width:768px) {
  .lightbox-content img { max-height:80vh; }
  .lightbox-prev { left:10px; width:40px; height:40px; }
  .lightbox-next { right:10px; width:40px; height:40px; }
  .lightbox-close { top:10px; right:10px; width:36px; height:36px; }
}