body,html{font-family:'Poppins','Noto Sans Bengali','Hind Siliguri','SolaimanLipi',sans-serif;line-height:1.75}
body{background-color:var(--bg);background-image:radial-gradient(circle at 15% 15%,rgba(56,189,248,0.08) 0%,transparent 45%),radial-gradient(circle at 85% 85%,rgba(250,204,21,0.05) 0%,transparent 40%);background-attachment:fixed}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--surface)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary),var(--secondary));border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:var(--primary)}
::selection{background:rgba(56,189,248,0.25);color:var(--text)}
.lang-bn,[lang="bn"],.bn{font-family:'Noto Sans Bengali','Hind Siliguri','SolaimanLipi','Poppins',sans-serif;line-height:1.8;letter-spacing:0.01em}
.navbar{box-shadow:0 4px 20px rgba(15,23,42,0.06);border-bottom:1px solid rgba(186,230,253,0.5)}
.navbar .nav-link{border-radius:8px;transition:color 0.3s ease,background-color 0.3s ease;padding:0.5rem 0.85rem}
.navbar .nav-link:hover,.navbar .nav-link:focus,.navbar .nav-link.active{background-color:rgba(56,189,248,0.1);color:var(--primary)}
.feature-card,.info-card,main .card,.author-card-bg{border-radius:16px;background:linear-gradient(145deg,var(--surface),rgba(255,255,255,0.95));box-shadow:0 4px 14px rgba(15,23,42,0.05),0 1px 2px rgba(15,23,42,0.03);border:1px solid var(--border);transition:transform 0.3s ease,box-shadow 0.3s ease,border-color 0.3s ease}
.hero-card{border-radius:18px;background:linear-gradient(145deg,var(--surface),rgba(224,242,254,0.6));box-shadow:0 8px 24px rgba(15,23,42,0.07);border:1px solid var(--border)}
.feature-card:hover,.info-card:hover,main .card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(30,41,59,0.1),0 4px 10px rgba(56,189,248,0.08);border-color:var(--primary)}
.btn{border-radius:10px;font-weight:600;transition:all 0.25s ease}
.btn:hover,.btn:focus{transform:scale(1.03)}
.btn-neon,.btn-primary,.site-btn.cta-register,.btn-ice{background-image:linear-gradient(135deg,var(--primary),color-mix(in srgb,var(--primary) 85%,#000));box-shadow:0 4px 12px rgba(56,189,248,0.25);border:1px solid transparent;color:#fff}
.btn-neon:hover,.btn-primary:hover,.site-btn.cta-register:hover,.btn-ice:hover{box-shadow:0 6px 18px rgba(56,189,248,0.45);transform:scale(1.04)}
.btn-outline-neon,.btn-outline-ice,.btn-outline-primary{border:1px solid var(--primary);color:var(--primary);background:rgba(56,189,248,0.05);transition:all 0.3s ease}
.btn-outline-neon:hover,.btn-outline-ice:hover,.btn-outline-primary:hover{box-shadow:0 4px 14px rgba(56,189,248,0.2);background:rgba(56,189,248,0.12);transform:scale(1.03)}
.form-control,input[type="text"],input[type="email"],input[type="password"],input[type="search"],input[type="tel"],textarea,select{border-radius:8px;border-color:var(--border);transition:border-color 0.3s ease,box-shadow 0.3s ease}
.form-control:focus,input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(56,189,248,0.15);outline:none}
.text-gold,.text-warning{color:#facc15;text-shadow:0 1px 3px rgba(250,204,21,0.35)}
footer{border-top:3px solid var(--primary);background-image:linear-gradient(180deg,var(--secondary),color-mix(in srgb,var(--secondary) 90%,#000))}
footer a{transition:color 0.3s ease,text-shadow 0.3s ease}
footer a:hover{text-shadow:0 0 8px rgba(56,189,248,0.5)}
.section-title{position:relative;padding-bottom:0.6rem;letter-spacing:-0.01em}
.section-title::after{content:'';position:absolute;bottom:0;left:0;width:64px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--primary),#facc15)}
.display-6,.h4,.h5{letter-spacing:-0.02em}
.floating-cta,[class*="floating"]{box-shadow:0 8px 24px rgba(15,23,42,0.12);border-radius:12px;transition:transform 0.3s ease,box-shadow 0.3s ease}
.floating-cta:hover,[class*="floating"]:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 12px 32px rgba(56,189,248,0.18)}