:root {
  --accent: #8ac5ff;
  --bg: #0a0a0a;
  --card-bg: #111;
  --text: #fff;
  --grey: #aaa;
  --shadow: rgba(0, 0, 0, 0.5);
}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;scroll-behavior:smooth;}
a{text-decoration:none;color:var(--grey);transition:color .3s;}a:hover{color:var(--text);}

.topbar{width:100%;background:var(--card-bg);display:flex;justify-content:space-between;padding:.5rem 2rem;position:fixed;top:0;z-index:10;backdrop-filter:blur(8px);}
.topbar .left{color:var(--accent);font-weight:600;}.topbar .right a{margin-left:1rem;font-size:.9rem;}

.container{position:relative;z-index:2;max-width:1200px;margin:6rem auto 2rem;padding:1rem;}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;}
.logo{font-size:1.75rem;font-weight:700;color:var(--accent);}nav a{margin:0 1rem;font-weight:500;}nav a.active,nav a:hover{color:var(--accent);} .social i{margin-left:1rem;font-size:1.3rem;cursor:pointer;color:var(--grey);}

.hero{text-align:center;padding:4rem 2rem;background:linear-gradient(135deg,rgba(30,144,255,0.3),transparent);border-radius:1rem;box-shadow:0 8px 24px var(--shadow);}
.hero h1{font-size:2.75rem;margin-bottom:1rem;font-weight:700;}.hero p{color:var(--grey);margin-bottom:2rem;font-weight:400;max-width:600px;margin:0 auto;}
.hero button{background:var(--accent);color:#000;margin-top:9px;padding:1rem 2rem;border:none;border-radius:2rem;font-size:1.1rem;cursor:pointer;transition:background .3s,transform .2s;font-weight:600;box-shadow:0 4px 12px var(--shadow);}
.hero button:hover{background:#187bcd;transform:translateY(-2px);}

.stats{display:flex;justify-content:center;gap:3rem;margin-top:3rem;}.stats div{text-align:center;}
.stats span{font-size:1.75rem;display:block;color:var(--accent);font-weight:700;}.stats small{color:var(--grey);display:block;margin-top:.25rem;}

.features{display:grid;grid-template-columns:1fr;gap:1rem;margin:3rem 0;}
.features div{background:var(--card-bg);padding:1.5rem;border-radius:1rem;text-align:center;box-shadow:0 6px 18px var(--shadow);transition:transform .3s,box-shadow .3s;}
.features div:hover{transform:translateY(-6px);box-shadow:0 12px 32px var(--shadow);}
.features i{font-size:2.5rem;margin-bottom:.75rem;color:var(--accent);} .features h3{margin-bottom:.5rem;font-weight:600;} .features p{color:var(--grey);}

.delivery-banner{background:rgba(30,144,255,0.15);padding:1rem;border-radius:1rem;text-align:center;color:var(--accent);font-weight:500;box-shadow:0 4px 12px var(--shadow);}

.tabs{display:flex;gap:1rem;margin:2.5rem 0;flex-wrap:wrap;}
.tab{background:var(--card-bg);padding:.75rem 1.5rem;border:none;border-radius:2rem;cursor:pointer;display:flex;align-items:center;gap:.75rem;color:var(--grey);font-weight:500;transition:background .3s,color .3s,transform .2s,box-shadow .3s;box-shadow:0 4px 16px var(--shadow);}
.tab.active,.tab:hover{background:var(--accent);color:#000;transform:translateY(-2px);box-shadow:0 6px 20px var(--shadow);}

.search-box{text-align:center;margin-bottom:2.5rem;}
.search-box input{width:100%;max-width:450px;padding:.75rem 1.5rem;border:none;border-radius:2rem;background:var(--card-bg);color:var(--text);outline:none;font-size:1rem;font-family:'Inter';box-shadow:0 4px 16px var(--shadow);}

.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;}
.product-card{background:var(--card-bg);border-radius:1rem;overflow:hidden;cursor:pointer;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s;box-shadow:0 6px 18px var(--shadow);}
.product-card:hover{transform:translateY(-8px);box-shadow:0 12px 24px var(--shadow);}
.product-card img{width:100%;height:180px;object-fit:cover;}
.product-card .info{padding:1.5rem;flex:1;display:flex;flex-direction:column;justify-content:center;}
.product-card h3{font-size:1.2rem;margin-bottom:.75rem;text-align:center;font-weight:700;}
.product-card p{color:var(--accent);font-weight:700;text-align:center;font-size:1.1rem;}

.hidden{display:none;}
.back{background:none;border:none;color:var(--accent);font-size:1rem;cursor:pointer;margin-bottom:1.5rem;font-weight:500;transition:color .3s;}
.back:hover{color:#fff;}

.product-detail{display:flex;flex-direction:column;gap:2.5rem;}
.info-box,.preview-box{background:var(--card-bg);padding:1.5rem;border-radius:1rem;box-shadow:0 6px 18px var(--shadow);}

#detail-info ul{list-style:none;padding:0;margin:0;margin-top: 0.5rem;}
#detail-info li{position:relative;padding-left:1.5rem;margin-bottom:0.75rem;color:var(--grey);font-size:0.95rem;}
#detail-info li:before{content:'\2022';position:absolute;left:0;color:var(--accent);font-size:1.2rem;line-height:1;}

#purchase-btn{background:var(--accent);color:#000;border:none;border-radius:2rem;padding:.75rem 1.5rem;font-size:1rem;cursor:pointer;font-weight:600;box-shadow:0 4px 12px var(--shadow);transition:background .3s,transform .2s;}
#purchase-btn:hover{background:#187bcd;transform:translateY(-2px);}

.preview-box{background:var(--card-bg);border-radius:1rem;padding:2rem;box-shadow:0 6px 18px var(--shadow);display:flex;flex-direction:column;align-items:center;gap:1.25rem;transition:transform .3s,box-shadow .3s}
.preview-box img{width:100%;max-width:320px;border-radius:.75rem;object-fit:cover}
.preview-box:hover{transform:translateY(-4px);box-shadow:0 12px 24px var(--shadow)}
.preview-box h2{font-size:1.5rem;font-weight:700;color:var(--text);text-align:center;margin:0}
.preview-box p{font-size:1rem;color:var(--grey);margin:0;text-align:center}
.preview-box p strong{color:var(--accent)}
.preview-box a{display:flex;width:100%;justify-content:center;text-decoration:none}
.preview-box #purchase-btn{align-self:center;width:100%;max-width:280px;background:var(--accent);color:#000;border:none;border-radius:2rem;padding:.75rem 0;font-size:1.05rem;font-weight:600;cursor:pointer;box-shadow:0 4px 12px var(--shadow);transition:background .3s,transform .2s;text-align:center;margin:0}
.preview-box #purchase-btn:hover{background:#187bcd;transform:translateY(-2px)}
.preview-box>p:nth-of-type(2){font-size:.85rem;color:var(--grey);margin-top:-.5rem;margin-bottom:.75rem}

@media(min-width:768px){
  .features{grid-template-columns:repeat(3,1fr);}
  .product-detail{flex-direction:row;}
  .info-box,.preview-box{flex:1;}
}

#particles{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1;overflow:hidden;}
.bubble{position:absolute;bottom:-50px;background:rgba(30,144,255,0.4);border-radius:50%;animation:rise 10s infinite ease-in-out;}
@keyframes rise{0%{transform:translateY(0) scale(0.4);opacity:1;}50%{opacity:0.6;}100%{transform:translateY(-120vh) scale(1.2);opacity:0;}}