:root{
  /* Executive palette (variable names kept for compatibility). */
  --saffron:#c9a24b;   /* brushed gold accent */
  --maroon:#141b2d;    /* deep navy */
  --ink:#20242e; --muted:#6b7280;
  --line:#e3e6ee; --bg:#f6f7fa; --ok:#1b8a4b; --bad:#c0392b; --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,Arial,"Noto Sans Devanagari",sans-serif;
  background:var(--bg);color:var(--ink)}
a{color:var(--saffron);text-decoration:none}
.admin-wrap{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--maroon);color:#f6e4cf;padding:20px 0;position:sticky;top:0;height:100vh}
.sidebar .logo{font-weight:800;font-size:1.2rem;padding:0 20px 16px;border-bottom:1px solid rgba(255,255,255,.15)}
.sidebar a{display:block;color:#f6e4cf;padding:12px 20px;font-weight:600}
.sidebar a:hover,.sidebar a.active{background:rgba(255,255,255,.12);text-decoration:none}
.content{flex:1;min-width:0}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;display:flex;align-items:center;gap:12px}
.topbar .spacer{margin-left:auto}
.main{padding:24px}
h1{color:var(--maroon);margin:0 0 18px;font-size:1.6rem}
.btn{display:inline-block;background:var(--saffron);color:#fff;border:0;padding:9px 16px;border-radius:8px;
  font-weight:700;cursor:pointer;font:inherit}
.btn:hover{background:#a8842f;text-decoration:none}
.btn-sm{padding:5px 10px;font-size:.85rem}
.btn-danger{background:var(--bad)}
.btn-light{background:#e7eaf1;color:#333}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.stats{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));margin-bottom:22px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat .n{font-size:1.9rem;font-weight:800;color:var(--maroon)}
.stat .l{color:var(--muted);font-size:.9rem}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
th,td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:.92rem}
th{background:#eef0f6;color:var(--maroon)}
tr:last-child td{border-bottom:0}
.badge{display:inline-block;padding:2px 10px;border-radius:20px;font-size:.78rem;font-weight:700}
.badge.paid{background:#e6f6ec;color:var(--ok)}
.badge.pending{background:#f3ead2;color:#8a6d1f}
.badge.failed,.badge.cancelled{background:#fbe9e7;color:var(--bad)}
label{display:block;font-weight:600;margin:14px 0 6px}
input,textarea,select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fffdfa}
textarea{min-height:90px}
.row2{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media(max-width:700px){.row2{grid-template-columns:1fr}}
.flash{padding:11px 14px;border-radius:8px;margin-bottom:16px;font-weight:600}
.flash.success{background:#e6f6ec;color:var(--ok)}
.flash.error{background:#fbe9e7;color:var(--bad)}
.login-box{max-width:380px;margin:8vh auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:30px;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.login-box h1{text-align:center}
.actions{display:flex;gap:8px}
.muted{color:var(--muted)}

/* ---- Mobile: collapsible sidebar + responsive tables ---- */
.hamburger{display:none;background:transparent;border:0;color:var(--maroon);
  font-size:1.5rem;line-height:1;cursor:pointer;padding:4px 10px;border-radius:8px}
.hamburger:hover{background:#eef0f6}
.sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:1000;
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}
.sidebar-overlay.show{opacity:1;visibility:visible;pointer-events:auto}

@media (max-width:860px){
  .sidebar{
    position:fixed;top:0;left:0;z-index:1100;height:100vh;width:230px;
    transform:translateX(-100%);transition:transform .25s ease;
    overflow-y:auto;
  }
  .sidebar.open{transform:translateX(0)}
  .hamburger{display:inline-block}
  .admin-name{display:none}
  .topbar strong{font-size:1rem}
  .main{padding:16px}
  body.admin-nav-open{overflow:hidden}
  /* wide tables scroll horizontally instead of breaking the layout */
  table{display:block;overflow-x:auto;white-space:nowrap}
  .stats{grid-template-columns:repeat(2,1fr)}
  .row2{grid-template-columns:1fr}
}
@media (max-width:480px){
  .stats{grid-template-columns:1fr}
}
/* on desktop the sidebar is always visible; overlay never shows */
@media (min-width:861px){
  .sidebar{transform:none !important}
  .sidebar-overlay{display:none}
}