:root{
  --blue:#29a9e0;--blue-light:#5bc4f0;--bg:#0b0d10;--bg-2:#101318;
  --surface:#161a20;--line:rgba(255,255,255,.08);--text:#eef2f5;--muted:#9aa6b2;
  --radius:12px;--green:#2ecc71;--red:#ff6b6b;--amber:#f1c40f;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',system-ui,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* Login */
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;
  background:radial-gradient(700px 400px at 50% 0%,rgba(41,169,224,.15),transparent 60%),var(--bg)}
.login-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:40px;width:min(400px,100%);box-shadow:0 20px 60px rgba(0,0,0,.5)}
.login-card .logo{display:flex;align-items:center;gap:12px;justify-content:center;margin-bottom:8px}
.login-card .logo img{width:48px;height:48px;border-radius:10px}
.login-card h1{font-size:1.3rem;text-align:center;margin-bottom:4px}
.login-card .sub{text-align:center;color:var(--muted);font-size:.85rem;margin-bottom:26px}
.err{background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.4);color:#ffb3b3;padding:10px 14px;border-radius:10px;font-size:.88rem;margin-bottom:16px}

/* Layout */
.shell{display:grid;grid-template-columns:248px 1fr;min-height:100vh}
.sidebar{background:var(--bg-2);border-right:1px solid var(--line);padding:22px 16px;position:sticky;top:0;height:100vh;overflow:auto}
.sidebar .brand{display:flex;align-items:center;gap:10px;margin-bottom:26px;padding:0 6px}
.sidebar .brand img{width:40px;height:40px;border-radius:9px}
.sidebar .brand b{font-family:'Oswald',sans-serif;letter-spacing:1px;font-size:1.05rem}
.sidebar .brand small{display:block;color:var(--blue);font-size:.6rem;letter-spacing:2px}
.menu a{display:flex;align-items:center;gap:11px;padding:11px 14px;border-radius:10px;color:var(--muted);font-size:.92rem;margin-bottom:3px;transition:.18s}
.menu a:hover{background:var(--surface);color:#fff}
.menu a.active{background:rgba(41,169,224,.14);color:var(--blue);font-weight:600}
.menu a .ico{width:20px;text-align:center}
.menu .badge{margin-left:auto;background:var(--blue);color:#04202e;font-size:.7rem;font-weight:700;padding:1px 8px;border-radius:20px}
.menu .sep{margin:14px 8px 8px;font-size:.7rem;letter-spacing:1.5px;text-transform:uppercase;color:#5a6570}

.main{padding:26px 30px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;gap:16px;flex-wrap:wrap}
.topbar h1{font-family:'Oswald',sans-serif;font-size:1.6rem;letter-spacing:.5px}
.topbar .who{color:var(--muted);font-size:.88rem}
.topbar .who a{color:var(--blue)}

/* Cards / stats */
.grid{display:grid;gap:18px}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.stat-card .n{font-family:'Oswald',sans-serif;font-size:2rem;color:var(--blue);line-height:1}
.stat-card .l{color:var(--muted);font-size:.85rem;margin-top:6px}

/* Panel + table */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:22px}
.panel h2{font-family:'Oswald',sans-serif;font-size:1.15rem;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--muted);font-weight:500;font-size:.78rem;text-transform:uppercase;letter-spacing:1px}
tr:hover td{background:rgba(255,255,255,.02)}
td img.thumb{width:54px;height:40px;object-fit:cover;border-radius:6px}

/* Forms */
.form-grid{display:grid;gap:14px}
label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:6px}
input,select,textarea{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:9px;
  padding:11px 13px;color:var(--text);font-family:inherit;font-size:.92rem;transition:.18s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(41,169,224,.18)}
textarea{resize:vertical;min-height:90px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--blue);color:#04202e;border:none;
  padding:10px 18px;border-radius:9px;font-weight:600;cursor:pointer;font-size:.88rem;transition:.2s;font-family:inherit}
.btn:hover{background:var(--blue-light)}
.btn-sm{padding:7px 12px;font-size:.8rem}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-danger{background:transparent;border:1px solid rgba(255,107,107,.45);color:var(--red)}
.btn-danger:hover{background:var(--red);color:#fff}

/* Badges/pills */
.pill{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.74rem;font-weight:600}
.pill.on{background:rgba(46,204,113,.15);color:var(--green)}
.pill.off{background:rgba(255,107,107,.15);color:var(--red)}
.pill.paid{background:rgba(46,204,113,.15);color:var(--green)}
.pill.pending{background:rgba(241,196,15,.15);color:var(--amber)}
.pill.failed{background:rgba(255,107,107,.15);color:var(--red)}

.flash{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:.9rem}
.flash.ok{background:rgba(46,204,113,.12);border:1px solid rgba(46,204,113,.4);color:#a7f3c8}
.flash.err{background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.4);color:#ffb3b3}
.muted{color:var(--muted)}
.tabs{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}
.tabs a{padding:8px 16px;border:1px solid var(--line);border-radius:8px;font-size:.85rem;color:var(--muted)}
.tabs a.active{background:var(--blue);color:#04202e;border-color:var(--blue);font-weight:600}
.empty{text-align:center;color:var(--muted);padding:30px}

@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  .sidebar{position:static;height:auto;display:flex;flex-direction:column}
  .cols-4{grid-template-columns:repeat(2,1fr)}
  .cols-3,.cols-2,.row2,.row3{grid-template-columns:1fr}
}