:root{--blue:#2563eb;--blue-d:#1d4ed8;--blue-l:#eff6ff;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f6f8fc;--white:#fff;--ok:#16a34a;--err:#dc2626;--r:12px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Bengali",Arial,sans-serif;color:var(--ink);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:1.6rem;margin:.2rem 0 1rem}h2{font-size:1.15rem;margin:0 0 .8rem}
.muted{color:var(--muted)}.center{text-align:center}.small{font-size:.85rem}
/* Header (white) */
.topbar{position:sticky;top:0;z-index:30;height:60px;background:var(--white);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:0 16px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.2rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.logo{background:var(--blue);color:#fff;border-radius:8px;padding:2px 8px;font-weight:800}
.brand-text{color:var(--blue)}
.topnav{margin-left:auto;display:none;gap:18px}
.topnav a{color:var(--ink);font-weight:500}
.menu-btn{background:var(--white);border:1px solid var(--line);border-radius:10px;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
/* Drawer (white) */
.backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);opacity:0;visibility:hidden;transition:.2s;z-index:40}
.drawer{position:fixed;top:0;left:0;bottom:0;width:280px;max-width:84vw;background:var(--white);border-right:1px solid var(--line);z-index:50;transform:translateX(-100%);transition:transform .22s;display:flex;flex-direction:column;overflow-y:auto}
.nav-open .drawer{transform:none}.nav-open .backdrop{opacity:1;visibility:visible}
.drawer-head{height:60px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line)}
.drawer-nav{display:flex;flex-direction:column;padding:12px}
.drawer-nav a,.drawer-logout{padding:11px 14px;border-radius:10px;color:var(--ink);font-weight:500;text-align:left;background:none;border:0;font:inherit;cursor:pointer;display:block;width:100%}
.drawer-nav a:hover,.drawer-logout:hover{background:var(--blue-l);text-decoration:none}
.drawer-nav a.active{background:var(--blue-l);color:var(--blue-d);font-weight:700}
.drawer-logout{color:var(--err);margin-top:8px;border-top:1px solid var(--line);border-radius:0 0 10px 10px;padding-top:14px}
.logout-form{margin:0}
/* Footer (white) */
.footer{background:var(--white);border-top:1px solid var(--line);margin-top:auto}
.footer-in{max-width:1100px;margin:0 auto;padding:16px;display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:space-between;font-size:.9rem}
/* Layout */
.container{width:100%;max-width:1100px;margin:0 auto;padding:20px 16px 40px;flex:1}
.is-public .menu-btn.close{display:inline-flex}
@media(min-width:900px){
 .is-public .menu-btn,.is-public .backdrop,.is-public .drawer{display:none}
 .is-public .topnav{display:flex}
 .is-admin .menu-btn:not(.close){display:none}
 .is-admin .drawer{transform:none;top:60px;width:250px;z-index:20}
 .is-admin .drawer-head,.is-admin .backdrop{display:none}
 .is-admin .container{margin-left:250px;width:calc(100% - 250px);max-width:none;padding:24px 32px 40px}
 .is-admin .footer{margin-left:250px}
 .is-admin .topnav{display:flex}
}
/* Components */
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:18px}
.narrow{max-width:460px;margin:30px auto}.wide{max-width:640px;margin:20px auto}
.grid{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media(min-width:700px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1000px){.grid.g4{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.stat b{display:block;font-size:1.6rem;color:var(--blue-d)}.stat span{color:var(--muted);font-size:.88rem}
.btn{display:inline-block;background:var(--blue);color:#fff;border:1px solid var(--blue);border-radius:10px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer;text-align:center}
.btn:hover{background:var(--blue-d);text-decoration:none}
.btn:disabled{background:#cbd5e1;border-color:#cbd5e1;cursor:not-allowed}
.btn-outline{background:var(--white);color:var(--blue-d)}.btn-outline:hover{background:var(--blue-l)}
.btn-danger{background:var(--white);color:var(--err);border-color:#fecaca}.btn-danger:hover{background:#fef2f2}
.btn-sm{padding:5px 11px;font-size:.85rem;border-radius:8px}
.btn-block{display:block;width:100%}
label{display:block;font-weight:600;margin:14px 0 5px}
input[type=text],input[type=url],input[type=password],input[type=number],input[type=date],textarea,select{width:100%;padding:10px 12px;border:1px solid #cbd5e1;border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:2px solid #bfdbfe;border-color:var(--blue)}
.check{display:flex;gap:8px;align-items:center;font-weight:500}.check input{width:auto}
.hint{font-size:.85rem;color:var(--muted);margin-top:4px}
.alert{padding:11px 14px;border-radius:10px;margin-bottom:14px;border:1px solid}
.alert-success{background:#f0fdf4;border-color:#bbf7d0;color:#166534}
.alert-error{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.alert-info{background:var(--blue-l);border-color:#bfdbfe;color:var(--blue-d)}
.badge{padding:2px 10px;border-radius:99px;font-size:.78rem;font-weight:700}
.badge-on{background:#dcfce7;color:#166534}.badge-off{background:#f1f5f9;color:#475569}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.filters input,.filters select{width:auto;flex:1 1 140px}
.actions{display:flex;flex-wrap:wrap;gap:6px}.actions form{margin:0}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:var(--white)}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle;font-size:.93rem}
th{background:#f8fafc;color:var(--muted);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.03em}
.nowrap{white-space:nowrap}.mono{font-family:ui-monospace,Menlo,Consolas,monospace;word-break:break-all}
@media(max-width:699px){
 table.stack thead{display:none}
 table.stack tr{display:block;border:1px solid var(--line);border-radius:10px;margin-bottom:12px;padding:6px 4px}
 table.stack td{display:flex;justify-content:space-between;gap:12px;border:0;padding:6px 10px;text-align:right}
 table.stack td::before{content:attr(data-label);color:var(--muted);font-weight:600;text-align:left}
 table.stack td.actions-td{display:block;text-align:left}table.stack td.actions-td::before{display:none}
}
.pager{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.pager a{padding:5px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}
.pager a.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.two-col{display:grid;gap:18px}@media(min-width:900px){.two-col{grid-template-columns:1.2fr 1fr}}
.chart{display:flex;align-items:flex-end;gap:4px;height:170px;padding-top:18px;overflow-x:auto}
.bar-col{flex:1;min-width:26px;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center}
.bar{width:100%;max-width:34px;background:var(--blue);border-radius:5px 5px 0 0}
.bar-val{font-size:.7rem;color:var(--muted)}.bar-lbl{font-size:.65rem;color:var(--muted);margin-top:3px;white-space:nowrap}
/* Hero & preview */
.hero{text-align:center;padding:36px 12px 10px}.hero h1{font-size:2rem}
.steps{display:grid;gap:14px;margin-top:18px}@media(min-width:700px){.steps{grid-template-columns:repeat(3,1fr)}}
.link-preview{display:flex;gap:14px;align-items:center;border:1px solid var(--line);border-radius:var(--r);padding:12px;background:#fff;text-align:left}
.link-preview img{width:110px;height:70px;object-fit:cover;border-radius:8px;background:var(--blue-l);flex:none}
.link-preview .t{font-weight:700;overflow-wrap:anywhere}.link-preview .d{color:var(--muted);font-size:.9rem;overflow-wrap:anywhere}
.landing{max-width:620px;margin:10px auto;text-align:center}
.ad-box{border:1px dashed #93c5fd;background:var(--blue-l);border-radius:var(--r);padding:16px;margin:18px 0}
.tag{display:inline-block;background:#fff;border:1px solid #bfdbfe;color:var(--blue-d);font-size:.75rem;font-weight:700;border-radius:99px;padding:1px 10px;margin-bottom:8px;text-transform:uppercase;letter-spacing:.04em}
.count-num{font-size:2.6rem;font-weight:800;color:var(--blue-d);line-height:1}
.progress{height:10px;background:#e2e8f0;border-radius:99px;overflow:hidden;margin:12px 0}
.progress>div{height:100%;width:0;background:var(--blue);transition:width .4s linear}

.logo-img{height:34px;width:auto;max-width:140px;object-fit:contain;border-radius:6px}
.lock-badge{font-size:.8rem}

.nav-sep{margin:14px 14px 4px;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.banner{max-width:100%;border-radius:10px;display:block;margin:0 auto 12px}
.code{background:#f1f5f9;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.85rem;overflow-x:auto;white-space:pre-wrap;word-break:break-all}
.otp{letter-spacing:.5em;text-align:center;font-size:1.4rem}