@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=DM+Sans:wght@300;400;500;600&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --navy:   #060c18;
  --navy2:  #0a1428;
  --navy3:  #0f1e38;
  --teal:   #00e5a0;
  --teal2:  #00b4d8;
  --gold:   #ffd166;
  --pink:   #f72585;
  --purple: #7b2ff7;
  --white:  #e8f4ff;
  --gray:   #7a9ab8;
  --dim:    #2a4060;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--navy);color:var(--white);font-family:'DM Sans',sans-serif;overflow-x:hidden;cursor:none}

/* Custom cursor */
.cursor{position:fixed;width:12px;height:12px;background:var(--teal);border-radius:50%;pointer-events:none;z-index:9999;transform:translate(-50%,-50%);transition:transform .1s,width .2s,height .2s;mix-blend-mode:difference}
.cursor-ring{position:fixed;width:36px;height:36px;border:1.5px solid var(--teal);border-radius:50%;pointer-events:none;z-index:9998;transform:translate(-50%,-50%);transition:transform .15s,width .3s,height .3s,opacity .3s;opacity:.5}

/* Nav */
nav{position:fixed;top:0;left:0;right:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:0 48px;height:68px;background:rgba(6,12,24,.85);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,229,160,.12)}
.nav-logo{font-family:'Orbitron',sans-serif;font-weight:900;font-size:15px;color:var(--teal);letter-spacing:2px;text-decoration:none}
.nav-logo span{color:var(--white)}
.nav-links{display:flex;gap:36px;list-style:none}
.nav-links a{color:var(--gray);text-decoration:none;font-size:13px;font-weight:500;letter-spacing:.5px;transition:color .2s;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:1.5px;background:var(--teal);transition:width .2s}
.nav-links a:hover{color:var(--teal)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--teal)}
.nav-links a.active::after{width:100%}
.nav-cta{background:var(--teal);color:var(--navy);font-family:'DM Sans',sans-serif;font-weight:700;font-size:13px;padding:9px 22px;border-radius:6px;text-decoration:none;letter-spacing:.5px;transition:transform .15s,box-shadow .15s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,229,160,.3)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.burger span{width:22px;height:2px;background:var(--white);border-radius:2px;transition:.2s}

/* Hero base */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:68px}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 60% 40%,rgba(0,180,216,.08) 0%,transparent 60%),radial-gradient(ellipse 50% 50% at 20% 80%,rgba(247,37,133,.06) 0%,transparent 50%)}

/* Grid overlay */
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(rgba(0,229,160,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,229,160,.03) 1px,transparent 1px);background-size:44px 44px;pointer-events:none}

/* Section base */
section{position:relative;padding:100px 0}
.container{max-width:1140px;margin:0 auto;padding:0 48px}
.section-tag{display:inline-block;font-family:'Orbitron',sans-serif;font-size:10px;letter-spacing:3px;color:var(--teal);border:1px solid rgba(0,229,160,.35);border-radius:4px;padding:4px 14px;margin-bottom:16px}
.section-title{font-family:'Orbitron',sans-serif;font-weight:700;font-size:clamp(26px,4vw,42px);line-height:1.15;margin-bottom:12px}
.section-sub{font-size:16px;color:var(--gray);line-height:1.7;max-width:560px}

/* Gradient text */
.grad-teal{background:linear-gradient(135deg,var(--teal),var(--teal2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.grad-gold{background:linear-gradient(135deg,var(--gold),#ff9f43);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.grad-pink{background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Cards */
.card{background:var(--navy3);border:1px solid rgba(255,255,255,.07);border-radius:16px;padding:28px;transition:transform .2s,border-color .2s,box-shadow .2s}
.card:hover{transform:translateY(-6px);border-color:rgba(0,229,160,.3);box-shadow:0 20px 40px rgba(0,0,0,.4)}
.card-glow{box-shadow:0 0 0 rgba(0,229,160,0)}
.card-glow:hover{box-shadow:0 0 30px rgba(0,229,160,.12)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;border-radius:8px;font-family:'DM Sans',sans-serif;font-weight:600;font-size:14px;text-decoration:none;transition:transform .15s,box-shadow .2s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,var(--teal),var(--teal2));color:var(--navy);letter-spacing:.3px}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,229,160,.35)}
.btn-outline{background:transparent;color:var(--teal);border:1.5px solid var(--teal);letter-spacing:.3px}
.btn-outline:hover{background:rgba(0,229,160,.08);transform:translateY(-2px)}
.btn-gold{background:linear-gradient(135deg,var(--gold),#ff9f43);color:var(--navy)}
.btn-gold:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(255,209,102,.3)}

/* Grad bar */
.grad-bar{height:3px;background:linear-gradient(90deg,var(--teal),var(--teal2),var(--pink));border-radius:2px;margin:16px 0}

/* Stat badge */
.stat-badge{text-align:center}
.stat-num{font-family:'Orbitron',sans-serif;font-size:36px;font-weight:900;color:var(--teal);display:block}
.stat-lbl{font-size:12px;color:var(--gray);letter-spacing:1px;margin-top:4px}

/* Tag chips */
.chip{display:inline-block;font-size:11px;font-family:'JetBrains Mono',monospace;color:var(--teal);background:rgba(0,229,160,.1);border:1px solid rgba(0,229,160,.2);border-radius:20px;padding:3px 12px;margin:3px}

/* Video embed */
.video-wrap{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:14px;border:1px solid rgba(0,229,160,.15)}
.video-wrap iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}

/* Footer */
footer{background:var(--navy2);border-top:1px solid rgba(0,229,160,.1);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand{font-family:'Orbitron',sans-serif;font-size:14px;font-weight:900;color:var(--teal);margin-bottom:12px}
.footer-desc{font-size:13px;color:var(--gray);line-height:1.7}
.footer-col h4{font-size:11px;letter-spacing:2px;color:var(--gray);margin-bottom:16px;font-family:'Orbitron',sans-serif}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13px;color:var(--gray);text-decoration:none;transition:color .15s}
.footer-col a:hover{color:var(--teal)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--dim)}

/* Animations */
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes pulse-ring{0%{transform:scale(1);opacity:.6}100%{transform:scale(1.6);opacity:0}}
@keyframes fadeUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideIn{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}
@keyframes dna-scroll{0%{transform:translateY(0)}100%{transform:translateY(-50%)}}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
@keyframes bounce-x{0%,100%{transform:translateX(0)}50%{transform:translateX(5px)}}

.anim-float{animation:floatY 4s ease-in-out infinite}
.anim-fade-up{opacity:0;animation:fadeUp .7s ease forwards}
.delay-1{animation-delay:.15s}
.delay-2{animation-delay:.3s}
.delay-3{animation-delay:.45s}
.delay-4{animation-delay:.6s}

/* Scrollbar */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--navy)}
::-webkit-scrollbar-thumb{background:var(--dim);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--teal)}

/* Topic badge colors */
.badge-teal{background:rgba(0,229,160,.12);color:var(--teal);border:1px solid rgba(0,229,160,.25)}
.badge-blue{background:rgba(0,180,216,.12);color:var(--teal2);border:1px solid rgba(0,180,216,.25)}
.badge-gold{background:rgba(255,209,102,.12);color:var(--gold);border:1px solid rgba(255,209,102,.25)}
.badge-pink{background:rgba(247,37,133,.12);color:var(--pink);border:1px solid rgba(247,37,133,.25)}
.badge-purple{background:rgba(123,47,247,.12);color:#a67dff;border:1px solid rgba(123,47,247,.25)}

/* Pill badge */
.pill{display:inline-block;font-size:10px;font-weight:700;letter-spacing:1px;padding:3px 12px;border-radius:20px;font-family:'Orbitron',sans-serif}

/* Code snippet style */
.code-snip{background:rgba(0,0,0,.5);border:1px solid rgba(0,229,160,.15);border-radius:8px;padding:14px 18px;font-family:'JetBrains Mono',monospace;font-size:12px;color:#88ddbb;line-height:1.8;overflow-x:auto}

/* Molecule icon card */
.mol-card{background:var(--navy3);border:1px solid rgba(255,255,255,.07);border-radius:14px;padding:20px;text-align:center;transition:all .2s;cursor:pointer}
.mol-card:hover{border-color:var(--teal);transform:translateY(-4px);background:rgba(0,229,160,.05)}
.mol-card svg{margin-bottom:12px}
.mol-card h4{font-size:13px;font-weight:600;color:var(--white);margin-bottom:4px}
.mol-card p{font-size:11px;color:var(--gray)}

/* Progress bar */
.progress-bar{height:4px;background:var(--dim);border-radius:2px;overflow:hidden;margin-top:8px}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--teal),var(--teal2));border-radius:2px;transition:width 1s ease}

/* Timeline */
.timeline{position:relative;padding-left:32px}
.timeline::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:2px;background:linear-gradient(var(--teal),var(--purple))}
.timeline-item{position:relative;margin-bottom:32px}
.timeline-dot{position:absolute;left:-28px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(0,229,160,.2)}
.timeline-week{font-family:'Orbitron',sans-serif;font-size:9px;letter-spacing:2px;color:var(--teal);margin-bottom:4px}
.timeline-title{font-size:15px;font-weight:600;color:var(--white);margin-bottom:4px}
.timeline-desc{font-size:13px;color:var(--gray);line-height:1.6}

/* Glowing divider */
.glow-divider{height:1px;background:linear-gradient(90deg,transparent,var(--teal),var(--teal2),transparent);margin:60px 0;opacity:.4}

/* Responsive */
@media(max-width:768px){
  nav{padding:0 20px}
  .nav-links,.nav-cta{display:none}
  .burger{display:flex}
  .container{padding:0 20px}
  section{padding:70px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
}