:root{
  --bg:#f4f6fb;--surface:#fff;--surface-2:#f8f9fd;--text:#0f172a;--muted:#64748b;--line:#e5e9f2;
  --brand:#0ea5e9;--brand-2:#6366f1;--brand-ink:#fff;--ok:#10b981;--warn:#f59e0b;--bad:#ef4444;
  --shadow:0 10px 40px -12px rgba(15,23,42,.18);--radius:18px;
  --font:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
[data-theme=dark]{
  --bg:#0a0f1e;--surface:#111933;--surface-2:#0e1530;--text:#e9eefc;--muted:#8d9bbd;--line:#1f2a4d;
  --shadow:0 14px 50px -14px rgba(0,0,0,.7);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh;
  background-image:radial-gradient(900px 500px at 10% -10%,rgba(14,165,233,.16),transparent 60%),radial-gradient(800px 500px at 100% 0,rgba(99,102,241,.16),transparent 60%);
  background-attachment:fixed}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0 0 .4em;letter-spacing:-.02em}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.04em}
.hidden{display:none!important}

/* ---------- Buttons / forms ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:600;
  padding:12px 20px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 8px 20px -8px rgba(99,102,241,.7);transition:transform .15s,box-shadow .15s,opacity .15s;text-decoration:none}
.btn:hover{transform:translateY(-1px);text-decoration:none}
.btn:active{transform:translateY(0)}
.btn[disabled]{opacity:.6;cursor:not-allowed}
.btn.ghost{background:var(--surface);color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn.danger{background:linear-gradient(135deg,#f43f5e,#ef4444);box-shadow:0 8px 20px -8px rgba(239,68,68,.7)}
.btn.sm{padding:7px 12px;font-size:.85rem;border-radius:9px}
.btn.block{width:100%}
label.f{display:block;font-size:.82rem;font-weight:600;color:var(--muted);margin:0 0 6px}
.field{margin-bottom:16px}
input[type=text],input[type=password],input[type=number],input[type=date],input[type=search],select,textarea{
  width:100%;font:inherit;color:var(--text);background:var(--surface-2);border:1.5px solid var(--line);border-radius:12px;
  padding:13px 14px;outline:none;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(14,165,233,.15)}
.input-wrap{position:relative}
.input-wrap .icon-btn{position:absolute;right:8px;top:50%;transform:translateY(-50%)}
.icon-btn{background:none;border:0;cursor:pointer;color:var(--muted);padding:8px;border-radius:8px;font-size:1rem;line-height:1}
.icon-btn:hover{background:var(--line)}
.row{display:grid;gap:14px}
.row.two{grid-template-columns:1fr 1fr}
.row.three{grid-template-columns:1fr 1fr 1fr}
@media(max-width:640px){.row.two,.row.three{grid-template-columns:1fr}}

.alert{padding:12px 14px;border-radius:12px;margin-bottom:16px;font-size:.92rem;border:1px solid}
.alert.success{background:rgba(16,185,129,.1);border-color:rgba(16,185,129,.35);color:#047857}
.alert.error{background:rgba(239,68,68,.1);border-color:rgba(239,68,68,.35);color:#b91c1c}
.alert.info{background:rgba(14,165,233,.1);border-color:rgba(14,165,233,.35);color:#0369a1}
[data-theme=dark] .alert.success{color:#6ee7b7}[data-theme=dark] .alert.error{color:#fca5a5}[data-theme=dark] .alert.info{color:#7dd3fc}

.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.badge.active{background:rgba(16,185,129,.15);color:#059669}
.badge.disabled{background:rgba(239,68,68,.15);color:#dc2626}
.badge.expired{background:rgba(245,158,11,.18);color:#b45309}

/* ---------- Public page ---------- */
.public{max-width:520px;margin:0 auto;padding:22px 18px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:6px 0 26px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;letter-spacing:-.02em;color:var(--text)}
.logo:hover{text-decoration:none}
.logo i{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-style:normal;font-size:1.1rem}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.panel h1{font-size:1.5rem}
.hero-sub{color:var(--muted);margin:0 0 22px;font-size:.95rem}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
.actions .btn{flex:1}
.foot{text-align:center;color:var(--muted);font-size:.78rem;margin-top:24px}
.sec-note{display:flex;gap:8px;align-items:center;justify-content:center;color:var(--muted);font-size:.8rem;margin-top:16px}

/* Reward card */
.gcard{position:relative;overflow:hidden;border-radius:22px;padding:24px;color:#fff;min-height:210px;
  background:linear-gradient(135deg,#0ea5e9 0%,#6366f1 60%,#7c3aed 100%);box-shadow:0 24px 50px -20px rgba(99,102,241,.8);
  animation:pop .5s cubic-bezier(.2,.9,.3,1.2)}
.gcard:before,.gcard:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.12)}
.gcard:before{width:220px;height:220px;right:-70px;top:-80px}
.gcard:after{width:160px;height:160px;left:-50px;bottom:-70px}
.gcard>*{position:relative;z-index:1}
.gcard .g-top{display:flex;justify-content:space-between;align-items:flex-start;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;opacity:.9}
.gcard .g-label{margin-top:26px;font-size:.85rem;opacity:.85}
.gcard .g-balance{font-size:2.6rem;font-weight:800;letter-spacing:-.03em;line-height:1.1;display:flex;align-items:center;gap:10px}
.gcard .g-bottom{display:flex;justify-content:space-between;align-items:flex-end;margin-top:22px;font-size:.82rem;gap:10px;flex-wrap:wrap}
.gcard .chip{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.18);padding:4px 10px;border-radius:99px;font-weight:600}
.gcard .dot{width:8px;height:8px;border-radius:50%;background:#34d399}
.gcard .dot.off{background:#fca5a5}
.gcard .eye{background:rgba(255,255,255,.2);color:#fff;border:0;border-radius:10px;cursor:pointer;padding:6px 9px;font-size:1rem}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0}
.stat{background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.stat small{display:block;color:var(--muted);font-size:.75rem}
.stat b{font-size:1rem}
@keyframes pop{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:none}}

.tx-list{list-style:none;margin:0;padding:0}
.tx-list li{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.tx-list li:last-child{border:0}
.tx-ico{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-weight:800;flex:none}
.tx-ico.in{background:rgba(16,185,129,.15);color:#059669}
.tx-ico.out{background:rgba(239,68,68,.14);color:#dc2626}
.tx-body{flex:1;min-width:0}
.tx-body b{display:block;font-size:.93rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tx-body small{color:var(--muted)}
.tx-amt{font-weight:700;white-space:nowrap}
.tx-amt.in{color:#059669}.tx-amt.out{color:#dc2626}

/* ---------- Admin ---------- */
.auth{min-height:100vh;display:grid;place-items:center;padding:20px}
.auth .panel{width:100%;max-width:420px}
.shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.side{background:var(--surface);border-right:1px solid var(--line);padding:22px 16px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:6px}
.side .logo{padding:4px 8px 18px}
.side nav a{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;color:var(--muted);font-weight:600;font-size:.94rem}
.side nav a:hover{background:var(--surface-2);text-decoration:none;color:var(--text)}
.side nav a.on{background:linear-gradient(135deg,rgba(14,165,233,.16),rgba(99,102,241,.16));color:var(--text)}
.side .spacer{flex:1}
.main{padding:28px;max-width:1200px;width:100%}
.page-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.page-head h1{font-size:1.6rem;margin:0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.kpi small{color:var(--muted);font-weight:600}
.kpi b{display:block;font-size:1.7rem;letter-spacing:-.02em;margin-top:4px}
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:22px}
.box h2{font-size:1.1rem}
.table-wrap{overflow-x:auto;margin:0 -6px}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th{text-align:left;color:var(--muted);font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;padding:10px 8px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.toolbar input,.toolbar select{width:auto;flex:1;min-width:140px}
.pager{display:flex;gap:8px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.menu-btn{display:none}
@media(max-width:860px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;left:0;top:0;width:260px;z-index:30;transform:translateX(-100%);transition:transform .2s}
  .side.open{transform:none}
  .menu-btn{display:inline-flex}
  .main{padding:18px}
}
.result-grid td.mono{font-size:.95rem}
.copy-ok{color:var(--ok)}
@media print{.side,.page-head .btn,.no-print{display:none!important}.shell{display:block}body{background:#fff;color:#000}}