:root{
  --bg:#15141a;
  --panel:#1d1c24;
  --panel-2:#242330;
  --border:#332f3d;
  --text:#f2eee8;
  --muted:#9b96a6;
  --copper:#d97b4f;
  --copper-bright:#f0a06a;
  --amber:#e8b04b;
  --green:#5fbf83;
  --red:#e0645f;
  --radius:14px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:radial-gradient(circle at 20% 0%, #201d28 0%, var(--bg) 55%);
  color:var(--text);
  font-family:'Inter',system-ui,sans-serif;
  min-height:100vh;
}
h1,h2,h3,.brand{font-family:'Space Grotesk',sans-serif;}
a{color:var(--copper-bright);text-decoration:none;}
.wrap{max-width:480px;margin:0 auto;padding:28px 18px 60px;}
.wrap-wide{max-width:920px;margin:0 auto;padding:28px 18px 60px;}

.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;border-bottom:1px solid var(--border);
  background:rgba(29,28,36,.7);backdrop-filter:blur(6px);
  position:sticky;top:0;z-index:10;
}
.topbar .brand{font-weight:700;font-size:18px;letter-spacing:.3px;
  background:linear-gradient(90deg,var(--copper-bright),var(--amber));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.topbar nav a{color:var(--muted);margin-left:16px;font-size:14px;font-weight:500;}
.topbar nav a:hover{color:var(--text);}

.card{
  background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px;
  margin-bottom:18px;
  box-shadow:0 6px 24px rgba(0,0,0,.25);
}
.card h2{margin:0 0 4px;font-size:20px;}
.muted{color:var(--muted);font-size:13px;}

.amount-display{
  font-family:'Space Grotesk',sans-serif;
  font-size:38px;font-weight:700;
  background:linear-gradient(90deg,var(--copper-bright),var(--amber));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin:6px 0 2px;
}

.method-box{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--panel);border:1px solid var(--border);
  border-radius:10px;padding:14px 16px;margin:14px 0;
}
.method-box .num{font-size:18px;font-weight:600;letter-spacing:.5px;}
.badge{
  display:inline-block;padding:3px 10px;border-radius:20px;
  font-size:11px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;
}
.badge-bkash{background:#e2136e22;color:#ff5aa0;}
.badge-nagad{background:#f7941e22;color:#ffb15c;}
.badge-rocket{background:#5c2d9122;color:#b98aff;}
.badge-upay{background:#00a99d22;color:#3ddcce;}
.badge-mcash{background:#1e88e522;color:#6cb3f7;}
.badge-any{background:#33333322;color:var(--muted);}
.badge-paid{background:#5fbf8322;color:var(--green);}
.badge-pending{background:#e8b04b22;color:var(--amber);}
.badge-expired,.badge-cancelled{background:#e0645f22;color:var(--red);}

label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px;font-weight:500;}
input[type=text],input[type=number],input[type=password],input[type=url],select,textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  border:1px solid var(--border);background:#100f14;color:var(--text);
  font-size:15px;font-family:inherit;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--copper);}

button,.btn{
  display:inline-block;border:none;cursor:pointer;
  background:linear-gradient(90deg,var(--copper),var(--copper-bright));
  color:#1a1206;font-weight:700;font-size:15px;
  padding:13px 20px;border-radius:10px;width:100%;text-align:center;
  transition:transform .1s ease, opacity .2s;
}
button:hover,.btn:hover{opacity:.92;}
button:active{transform:scale(.98);}
.btn-secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border);}
.btn-danger{background:linear-gradient(90deg,#b6453f,#e0645f);color:#fff;}
.btn-block{width:100%;margin-top:8px;}
.btn-sm{width:auto;padding:8px 14px;font-size:13px;}

table{width:100%;border-collapse:collapse;font-size:14px;}
th,td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.4px;}
tr:hover td{background:rgba(255,255,255,.02);}

.alert{padding:12px 14px;border-radius:10px;font-size:14px;margin-bottom:16px;}
.alert-error{background:#e0645f1a;color:#ff8b86;border:1px solid #e0645f44;}
.alert-success{background:#5fbf831a;color:#7fe0a3;border:1px solid #5fbf8344;}
.alert-info{background:#3d8bfd1a;color:#8fb8ff;border:1px solid #3d8bfd44;}

.center{text-align:center;}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:18px;}
.stat-box{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;}
.stat-box .num{font-size:24px;font-weight:700;font-family:'Space Grotesk',sans-serif;}
.stat-box .lbl{font-size:12px;color:var(--muted);margin-top:2px;}

.copy-row{display:flex;gap:8px;}
.copy-row input{flex:1;}
.copy-row button{width:auto;padding:12px 16px;}

.spinner{width:16px;height:16px;border:2px solid #ffffff44;border-top-color:#fff;border-radius:50%;display:inline-block;animation:spin .7s linear infinite;vertical-align:middle;margin-right:6px;}
@keyframes spin{to{transform:rotate(360deg);}}

.footer-note{text-align:center;color:var(--muted);font-size:12px;margin-top:24px;}