@import url(https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;700&family=Orbitron:wght@700;900&family=Share+Tech+Mono&display=swap);:root{--cyber-yellow:#fcee0a;--cyber-cyan:#00f0ff;--cyber-magenta:#ff00ff;--cyber-red:#ff003c;--cyber-blue:#0040ff;--cyber-dark:#0a0a0f;--cyber-darker:#050508;--cyber-light:#e0e0e0;--neon-glow:0 0 10px var(--cyber-cyan),0 0 20px var(--cyber-cyan),0 0 30px var(--cyber-cyan)}*{margin:0;padding:0;box-sizing:border-box}body{background:linear-gradient(135deg,#0a0a0f 0,#1a0a1f 50%,#0a0a0f 100%);color:var(--cyber-light);font-family:"Chakra Petch",sans-serif;font-size:16px;line-height:1.6;min-height:100vh;overflow-x:hidden;position:relative}.cyber-grid{position:fixed;top:0;left:0;width:100%;height:100%;background-image:linear-gradient(rgba(0,240,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,240,255,.03) 1px,transparent 1px);background-size:50px 50px;pointer-events:none;z-index:0;animation:20s linear infinite gridMove}@keyframes gridMove{0%{transform:translate(0,0)}100%{transform:translate(50px,50px)}}.scanlines{position:fixed;top:0;left:0;width:100%;height:100%;background:repeating-linear-gradient(0deg,rgba(0,0,0,.1) 0,transparent 1px,transparent 2px,rgba(0,0,0,.1) 3px);pointer-events:none;z-index:999;opacity:.3}.container{max-width:1400px;margin:0 auto;padding:40px 20px;position:relative;z-index:1}.back-link{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;margin-bottom:30px;background:rgba(0,240,255,.1);border:1px solid var(--cyber-cyan);border-radius:3px;color:var(--cyber-cyan);text-decoration:none;font-family:"Chakra Petch",sans-serif;font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:1px;transition:.3s;position:relative;overflow:hidden}.back-link::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(0,240,255,.2),transparent);transition:left .5s}.back-link:hover::before{left:100%}.back-link:hover{background:rgba(0,240,255,.2);border-color:var(--cyber-yellow);color:var(--cyber-yellow);box-shadow:0 0 20px rgba(0,240,255,.5);transform:translateX(-3px)}.back-link svg{width:20px;height:20px;transition:transform .3s}.back-link:hover svg{transform:translateX(-3px)}.cyber-header{text-align:center;margin-bottom:60px;position:relative}.glitch-wrapper{margin-bottom:20px}.cyber-title{font-family:Orbitron,sans-serif;font-size:72px;font-weight:900;color:var(--cyber-yellow);text-shadow:var(--neon-glow);letter-spacing:8px;margin:0}.glitch{position:relative;animation:3s infinite glitch-skew}.glitch::after,.glitch::before{content:attr(data-text);position:absolute;top:0;width:100%;height:100%}.glitch::before{left:2px;text-shadow:-2px 0 var(--cyber-red);clip:rect(44px,450px,56px,0);animation:5s linear infinite alternate-reverse glitch-anim}.glitch::after{left:-2px;text-shadow:-2px 0 var(--cyber-cyan);clip:rect(44px,450px,56px,0);animation:5s linear infinite alternate-reverse glitch-anim2}@keyframes glitch-anim{0%{clip:rect(31px,9999px,94px,0)}5%{clip:rect(70px,9999px,71px,0)}10%{clip:rect(60px,9999px,40px,0)}15%{clip:rect(80px,9999px,15px,0)}20%{clip:rect(25px,9999px,95px,0)}100%{clip:rect(30px,9999px,50px,0)}}@keyframes glitch-anim2{0%{clip:rect(65px,9999px,100px,0)}5%{clip:rect(10px,9999px,30px,0)}10%{clip:rect(85px,9999px,20px,0)}15%{clip:rect(40px,9999px,80px,0)}100%{clip:rect(45px,9999px,85px,0)}}@keyframes glitch-skew{0%,100%,30%{transform:skew(0)}10%{transform:skew(-1deg)}20%{transform:skew(1deg)}}.cyber-subtitle{font-size:20px;color:var(--cyber-cyan);margin-bottom:15px;letter-spacing:2px}.bracket{color:var(--cyber-magenta);font-weight:700;margin:0 5px}.system-info{font-family:"Share Tech Mono",monospace;font-size:14px;color:var(--cyber-light);opacity:.8}.status-online{color:#0f0;animation:2s infinite pulse}@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}.blink{animation:1s infinite blink}@keyframes blink{0%,50%{opacity:1}100%,51%{opacity:0}}.section-header{margin-bottom:40px}.section-title{font-family:Orbitron,sans-serif;font-size:36px;font-weight:700;color:var(--cyber-yellow);text-align:center;margin-bottom:20px}.cyber-bracket{color:var(--cyber-magenta);font-size:42px;margin:0 10px}.progress-bar{width:100%;height:4px;background:rgba(0,240,255,.1);border:1px solid var(--cyber-cyan);position:relative;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--cyber-cyan),var(--cyber-magenta),var(--cyber-yellow));box-shadow:0 0 10px var(--cyber-cyan);animation:2s infinite progressGlow}@keyframes progressGlow{0%,100%{box-shadow:0 0 10px var(--cyber-cyan)}50%{box-shadow:0 0 20px var(--cyber-cyan),0 0 30px var(--cyber-cyan)}}.lecture-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;margin-bottom:60px}.lecture-card{background:linear-gradient(135deg,rgba(10,10,15,.8),rgba(20,10,30,.8));border:2px solid var(--cyber-cyan);padding:25px;position:relative;overflow:hidden;transition:.3s;text-decoration:none;color:inherit;display:block;cursor:pointer}.lecture-card::before{content:"";position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;background:linear-gradient(45deg,var(--cyber-cyan),var(--cyber-magenta),var(--cyber-yellow),var(--cyber-cyan));background-size:400%;z-index:-1;opacity:0;transition:opacity .3s;animation:3s linear infinite borderAnimation}@keyframes borderAnimation{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}.lecture-card.active:hover::before{opacity:1}.lecture-card.active:hover{transform:translateY(-5px);box-shadow:0 10px 40px rgba(0,240,255,.4)}.lecture-card.locked{border-color:rgba(100,100,100,.3);opacity:.5;cursor:not-allowed}.card-number{font-family:Orbitron,sans-serif;font-size:48px;font-weight:900;color:var(--cyber-cyan);opacity:.2;position:absolute;top:10px;right:20px;line-height:1}.lecture-card.active .card-number{opacity:.4;text-shadow:0 0 20px var(--cyber-cyan)}.card-content{position:relative;z-index:1}.card-title{font-family:"Chakra Petch",sans-serif;font-size:22px;font-weight:700;color:var(--cyber-yellow);margin-bottom:10px;text-transform:uppercase}.lecture-card.active .card-title{text-shadow:0 0 10px var(--cyber-yellow)}.card-description{font-size:16px;color:var(--cyber-light);margin-bottom:20px;line-height:1.5}.card-status{display:flex;justify-content:space-between;align-items:center}.status-badge{font-family:"Share Tech Mono",monospace;font-size:12px;padding:5px 12px;border-radius:3px;font-weight:700;letter-spacing:1px}.status-badge.available{background:rgba(0,255,0,.2);color:#0f0;border:1px solid #0f0;box-shadow:0 0 10px rgba(0,255,0,.3)}.status-badge.locked-badge{background:rgba(100,100,100,.2);color:#999;border:1px solid #666}.card-arrow{font-size:24px;color:var(--cyber-cyan);transition:transform .3s}.lecture-card.active:hover .card-arrow{transform:translateX(5px)}.pdf-download-btn{position:absolute;top:15px;right:15px;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:rgba(252,238,10,.1);border:1px solid var(--cyber-yellow);border-radius:3px;color:var(--cyber-yellow);text-decoration:none;transition:.3s;cursor:pointer;z-index:10}.pdf-download-btn:hover{background:rgba(252,238,10,.2);box-shadow:0 0 10px var(--cyber-yellow);transform:scale(1.1)}.pdf-download-btn svg{width:18px;height:18px}.card-glitch{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,transparent 0,rgba(0,240,255,.1) 50%,transparent 100%);transform:translateX(-100%);pointer-events:none}.lecture-card.active:hover .card-glitch{animation:.6s glitchSwipe}@keyframes glitchSwipe{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}.cyber-footer{text-align:center;padding:30px 0;margin-top:60px}.footer-line{height:2px;background:linear-gradient(90deg,transparent 0,var(--cyber-cyan) 20%,var(--cyber-magenta) 50%,var(--cyber-cyan) 80%,transparent 100%);margin-bottom:20px;box-shadow:0 0 10px var(--cyber-cyan)}.cyber-footer p{font-family:"Share Tech Mono",monospace;font-size:14px;color:var(--cyber-light);opacity:.7}.text-cyan{color:var(--cyber-cyan);text-shadow:0 0 5px var(--cyber-cyan)}.teacher-info{padding:15px 0;text-align:center;margin:20px 0}.teacher-name{color:var(--cyber-yellow);text-shadow:0 0 10px var(--cyber-yellow)}.college-name{font-family:"Chakra Petch",sans-serif;color:var(--cyber-cyan);opacity:.8}.social-link{display:flex;align-items:center;justify-content:center;border:1px solid var(--cyber-cyan);color:var(--cyber-cyan)}.social-link:hover{border-color:var(--cyber-yellow);color:var(--cyber-yellow);box-shadow:0 0 20px var(--cyber-cyan);transform:translateY(-3px) scale(1.1);background:rgba(0,255,255,.2);box-shadow:0 0 15px var(--cyber-cyan);transform:translateY(-2px)}@media (max-width:768px){.container{padding:20px 15px}.cyber-title{font-size:48px;letter-spacing:4px}.cyber-subtitle{font-size:16px}.section-title{font-size:28px}.cyber-bracket{font-size:32px}.lecture-grid{grid-template-columns:1fr;gap:20px}.card-title{font-size:20px}.card-description{font-size:15px}}@media (max-width:480px){.cyber-title{font-size:36px;letter-spacing:2px}.cyber-subtitle{font-size:14px}.section-title{font-size:24px}.card-number{font-size:36px}.card-title{font-size:18px}.card-description{font-size:14px}}.teacher-name{font-family:Orbitron,sans-serif;font-size:16px;font-weight:700;color:var(--cyber-cyan);margin:5px 0;text-transform:uppercase}.college-name{font-size:14px;color:var(--cyber-light);margin:5px 0}.social-links{display:flex;justify-content:center;gap:20px;margin:20px 0}.social-link{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;color:var(--cyber-cyan);background:rgba(0,255,255,.1);border:1px solid var(--cyber-cyan);border-radius:3px;transition:.3s;text-decoration:none}.social-link svg{width:24px;height:24px}.footer-copyright{text-align:center;margin-top:20px}