body{margin:0;font-family:'Segoe UI',sans-serif;background:linear-gradient(135deg,#0f172a,#020617);color:#e5e7eb;overflow-x:hidden;animation:backgroundShift 20s ease infinite alternate;}
@keyframes backgroundShift{0%{background:linear-gradient(135deg,#0f172a,#020617);}50%{background:linear-gradient(135deg,#1e293b,#0f172a);}100%{background:linear-gradient(135deg,#0f172a,#020617);}}

.nav{display:flex;justify-content:space-between;align-items:center;padding:20px 50px;background:rgba(15,23,42,0.85);backdrop-filter:blur(10px);position:sticky;top:0;z-index:100;}
.logo{font-size:24px;font-weight:700;background:linear-gradient(90deg,#38bdf8,#22d3ee,#f472b6);-webkit-background:text;color:transparent;}
.nav-links a{margin-left:20px;cursor:pointer;font-weight:600;color:#cbd5f5;transition:all 0.3s ease;}
.nav-links a:hover{color:#38bdf8;}
.page{display:none;padding:80px 20px;text-align:center;position:relative;}
.page.active{display:block;}
.hero{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:90vh;text-align:center;padding:20px;position:relative;overflow:hidden;}
.hero h1{font-size:3rem;font-weight:800;line-height:1.2;margin-bottom:20px;z-index:2;position:relative;}
.hero h1 span{background:linear-gradient(90deg,#38bdf8,#22d3ee,#f472b6);-webkit-background:text;color:transparent;}
.btn{padding:16px 32px;border-radius:14px;font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,#38bdf8,#22d3ee,#f472b6);color:#020617;box-shadow:0 10px 25px rgba(0,0,0,0.3);cursor:pointer;transition:all 0.3s ease;}
.btn:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 15px 30px rgba(0,0,0,0.4);}
input{padding:14px 20px;width:360px;max-width:90%;border-radius:12px;border:none;margin-right:10px;outline:none;}
.check-wrapper{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;}
#result{margin-top:30px;text-align:left;}
.result-card{margin-top:20px;padding:20px;border-radius:16px;background:rgba(255,255,255,0.05);backdrop-filter:blur(8px);box-shadow:0 10px 30px rgba(0,0,0,0.3);transition:all 0.5s ease;}
.stats{display:flex;justify-content:center;gap:40px;flex-wrap:wrap;margin-top:40px;}
.stat{background:rgba(255,255,255,0.05);backdrop-filter:blur(8px);padding:30px;border-radius:16px;width:160px;transition:all 0.3s ease;display:flex;flex-direction:column;align-items:center;}
.stat:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 15px 30px rgba(0,0,0,0.4);}
.loading{display:flex;align-items:center;justify-content:center;gap:10px;font-size:1.2rem;}

/* Floating particles + parallax */
canvas#particles{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;pointer-events:none;}
.floating-shapes .shape{position:absolute;border-radius:50%;opacity:0.3;animation:float 10s infinite;}
.floating-shapes .circle{width:100px;height:100px;background:#38bdf8;top:50px;left:50px;}
.floating-shapes .polygon{width:120px;height:120px;background:#22d3ee;clip-path:polygon(50% 0%,100% 50%,50% 100%,0% 50%);top:150px;right:100px;}
.floating-shapes .triangle{width:80px;height:80px;background:#f472b6;clip-path:polygon(50% 0%,0% 100%,100% 100%);bottom:100px;left:200px;}
@keyframes float{0%,100%{transform:translateY(0px)}50%{transform:translateY(-20px)}}

@media screen and (max-width:768px){.hero h1{font-size:2.2rem}.stats{flex-direction:column;align-items:center}}