:root{--bg-page:#020813;--bg-panel:#061121;--bg-input:#0b192c;--border-blue:#1e3a8a;--border-gold:#ca8a04;--border-green:#15803d;--text-gold:#facc15;--text-green:#4ade80;--text-blue:#60a5fa;--text-white:#f8fafc;--text-muted:#94a3b8}body{background-color:var(--bg-page);background-image:radial-gradient(circle at top center,#0a192f 0%,#020813 100%);color:var(--text-white);font-family:'Tiro Bangla',serif!important;margin:0;padding:0;min-height:100vh}*{box-sizing:border-box;font-family:'Tiro Bangla',serif!important}.premium-navbar{background-color:#061121;border-bottom:2px solid var(--border-gold);position:sticky;top:0;z-index:1000;box-shadow:0 4px 20px rgba(0,0,0,0.7)}.nav-container{max-width:1250px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:10px 15px;position:relative}.nav-logo{display:flex;align-items:center;gap:12px;color:var(--text-gold);text-decoration:none;font-size:24px;font-weight:bold}.nav-logo img{height:45px;border-radius:4px;border:1px solid var(--border-gold)}.nav-links{display:flex;gap:5px}.nav-links a{color:var(--text-white);text-decoration:none;font-size:17px;padding:8px 14px;border-radius:6px;transition:0.3s;border:1px solid transparent}.nav-links a:hover{background:rgba(202,138,4,0.1);color:var(--text-gold);border-color:rgba(202,138,4,0.5)}.nav-links a.active{background:var(--border-gold);color:#000;font-weight:bold;box-shadow:0 0 10px rgba(202,138,4,0.4)}.mobile-menu-btn{display:none;background:transparent;border:none;color:var(--text-gold);padding:5px;cursor:pointer}.mobile-menu-btn svg{width:32px;height:32px}.dashboard-wrapper{max-width:1250px;margin:0 auto;padding:40px 15px}.main-header{text-align:center;margin-bottom:40px}.main-header h3{color:var(--text-white);font-size:24px;margin:0;text-shadow:2px 2px 4px #000}.main-header h1{background:linear-gradient(to right,#fde047,#d97706,#fde047);-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-size:48px;margin:5px 0 15px 0;font-weight:700}.subtitle-box{display:inline-block;border:1px solid var(--border-green);padding:8px 50px;color:var(--text-green);font-size:26px;position:relative;background:rgba(21,128,61,0.1);margin-bottom:15px}.subtitle-box::before,.subtitle-box::after{content:'❖';position:absolute;top:50%;transform:translateY(-50%);color:var(--text-gold);font-size:18px}.subtitle-box::before{left:15px}.subtitle-box::after{right:15px}.main-header p{color:var(--text-muted);font-size:18px;margin:0}.grid-container{display:flex;align-items:flex-start;gap:20px}aside{flex:0 0 300px;position:sticky;top:90px}main{flex:1;min-width:0}.premium-fee-table-wrap{border:1px solid var(--border-gold);border-radius:6px;background:var(--bg-panel);overflow:hidden;margin-bottom:20px;box-shadow:0 4px 15px rgba(0,0,0,0.3)}.premium-fee-table{width:100%;border-collapse:collapse;margin:0;font-size:14.5px}.premium-fee-table th{background:linear-gradient(to right,#ca8a04,#facc15);color:#000;padding:12px;text-align:center;font-size:20px;font-weight:bold;letter-spacing:1px}.premium-fee-table td{padding:12px 10px;border-bottom:1px dashed #1e293b;color:var(--text-white);vertical-align:middle}.premium-fee-table tr:last-child td{border-bottom:none}.premium-fee-table td:first-child{width:12%;color:var(--text-gold);font-weight:bold;text-align:center;border-right:1px dashed #1e293b}.premium-fee-table td:nth-child(2){width:63%;line-height:1.6}.premium-fee-table td:last-child{width:25%;color:var(--text-green);font-weight:bold;text-align:right;border-left:1px dashed #1e293b}.table-footer-note{padding:12px;text-align:center;background:rgba(239,68,68,0.05);color:#f87171;font-size:13.5px;line-height:1.6;border-top:1px solid var(--border-gold)}.sidebar-box{border:1px solid #1e293b;border-radius:6px;background:var(--bg-panel);margin-bottom:20px;overflow:hidden}.sidebar-title{text-align:center;padding:12px;border-bottom:1px solid #1e293b;font-size:18px;color:var(--text-white);background:#0f172a}.calc-panel{border:1px solid var(--border-blue);border-radius:8px;background:var(--bg-panel);margin-bottom:25px;overflow:hidden}.panel-heading{background:#0d1e36;color:var(--text-white);padding:12px 20px;font-size:20px;border-bottom:1px solid var(--border-blue)}.panel-body{padding:25px}.input-wrap{margin-bottom:25px}.input-wrap label{display:block;color:var(--text-muted);font-size:16px;margin-bottom:8px}.input-wrap input{width:100%;background:var(--bg-input);border:1px solid #334155;color:var(--text-white);padding:15px;font-size:22px;border-radius:4px;outline:none;transition:0.3s;text-align:center;font-weight:bold;letter-spacing:1px}.input-wrap input:focus{border-color:var(--border-blue);box-shadow:0 0 8px rgba(96,165,250,0.3)}.btn-row{display:flex;gap:15px;justify-content:center;margin-top:20px}.action-btn{background:transparent;color:var(--text-white);border:1px solid #334155;padding:12px 24px;font-size:18px;border-radius:4px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:0.3s}.btn-calc{border-color:var(--border-blue);background:rgba(30,58,138,0.2)}.btn-calc:hover{background:var(--border-blue)}.btn-reset{border-color:var(--border-green);background:rgba(21,128,61,0.1)}.btn-reset:hover{background:var(--border-green)}.res-area{display:none;animation:fadeIn 0.4s ease}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.kabin-table{width:100%;border-collapse:collapse;margin-bottom:10px}.kabin-table th,.kabin-table td{padding:12px 15px;border:1px solid #1e293b;font-size:18px}.kabin-table th{background:#0f172a;color:var(--text-gold);font-weight:bold;text-align:center}.kabin-table td.item-name{color:var(--text-white);text-align:left}.kabin-table td.item-val{color:var(--text-blue);font-weight:bold;text-align:center}.total-row{background:rgba(21,128,61,0.15)}.total-row td.item-name{color:var(--text-green);font-weight:bold;font-size:20px}.total-val{color:var(--text-gold)!important;font-size:24px!important}.explanation-box{padding:20px;background:rgba(59,130,246,0.05);border:1px solid var(--border-blue);border-radius:8px}.explanation-box h4{color:var(--text-blue);font-size:20px;margin-top:0;margin-bottom:15px;border-bottom:1px dashed var(--border-blue);padding-bottom:10px}.explanation-box div{color:var(--text-white);font-size:16px;line-height:1.8}.rules-list{list-style:none;padding:0 20px 15px 20px;margin:0}.rules-list li{position:relative;padding-left:25px;margin-bottom:12px;font-size:16px;color:var(--text-muted)}.rules-list li::before{content:'✅';position:absolute;left:0;font-size:14px;top:2px}.badge-seal{background:linear-gradient(45deg,#ca8a04,#facc15);color:#000;margin:15px;padding:15px;border-radius:6px;display:flex;align-items:center;gap:15px}.badge-seal .seal-icon{background:#fff;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px}.badge-seal div strong{display:block;font-size:18px;margin-bottom:3px}.badge-seal div span{font-size:14px;opacity:0.8}@media (max-width:1024px){.grid-container{flex-direction:column}aside{position:static;flex:none;width:100%}main{order:-1;width:100%}}@media (max-width:768px){.nav-container{padding:10px}.mobile-menu-btn{display:block}.nav-links{display:none;position:absolute;top:100%;left:0;width:100%;background:#061121;flex-direction:column;z-index:999}.nav-links.active{display:flex}.nav-links a{text-align:center;padding:15px;border-bottom:1px dashed #1e293b}.dashboard-wrapper{padding:25px 10px}.main-header h1{font-size:30px}.subtitle-box{font-size:20px;padding:6px 30px}.panel-body{padding:15px}.kabin-table th,.kabin-table td{font-size:16px;padding:10px}}@media (max-width:480px){.btn-row{flex-direction:column}}