:root{
  --bg-main:#0f172a;
  --bg-card:#020617;
  --bg-accent:#1e293b;
  --primary:#38bdf8;
  --primary-soft:#0ea5e9;
  --danger:#ef4444;
  --success:#22c55e;
  --warning:#facc15;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --border:#1f2937;
  --radius-lg:14px;
  --radius-md:10px;
  --shadow-soft:0 22px 40px rgba(15,23,42,0.65);
  --transition:all .18s ease-in-out;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:var(--font-sans);background:radial-gradient(circle at top,#1f2937 0,#020617 55%,#000 100%);color:var(--text);}

.layout{display:flex;min-height:100vh;}

.sidebar{
  width:250px;
  background:rgba(15,23,42,0.96);
  border-right:1px solid var(--border);
  backdrop-filter:blur(16px);
  position:sticky;
  top:0;
  height:100vh;
  box-shadow:4px 0 40px rgba(0,0,0,0.5);
  z-index:10;
}

.brand{
  display:flex;
  align-items:center;
  padding:18px 20px;
  border-bottom:1px solid var(--border);
}
.brand-logo{
  width:34px;height:34px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-right:10px;
  background:linear-gradient(135deg,#0ea5e9,#22c55e);
  color:#0b1120;
  font-size:18px;
}
.brand-text{
  font-weight:700;
  letter-spacing:.04em;
  font-size:15px;
}

.menu{
  padding:15px 12px 24px;
  overflow-y:auto;
  max-height:calc(100vh - 70px);
}
.menu ul{list-style:none;}
.menu li{margin-bottom:4px;}
.menu-label{
  padding:12px 10px 4px;
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.12em;
  color:var(--muted);
}

.menu a{
  display:flex;
  align-items:center;
  padding:9px 10px;
  border-radius:10px;
  font-size:13px;
  color:var(--muted);
  text-decoration:none;
  transition:var(--transition);
}
.menu a i{width:22px;text-align:center;margin-right:8px;font-size:14px;}
.menu a span{flex:1;}
.menu a:hover{
  background:rgba(56,189,248,.14);
  color:var(--text);
  transform:translateX(2px);
  box-shadow:0 10px 25px rgba(15,23,42,.75);
}

.main{flex:1;display:flex;flex-direction:column;}

.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 26px;
  border-bottom:1px solid var(--border);
  background:rgba(15,23,42,0.92);
  backdrop-filter:blur(18px);
  position:sticky;
  top:0;
  z-index:9;
}
.page-title{
  font-size:17px;
  letter-spacing:.04em;
  text-transform:uppercase;
  color:var(--muted);
}
.user-dropdown{
  display:flex;
  align-items:center;
  gap:10px;
  background:rgba(15,23,42,0.9);
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--border);
}
.user-avatar{
  width:30px;height:30px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:radial-gradient(circle at 20% 20%,#22c55e,#0ea5e9);
  color:#020617;
}
.user-meta strong{font-size:13px;}
.user-meta small{font-size:11px;color:var(--muted);display:block;}
.logout-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:24px;
  height:24px;
  border-radius:999px;
  color:var(--muted);
  text-decoration:none;
}
.logout-link:hover{background:rgba(248,113,113,.12);color:var(--danger);}

.content{
  padding:22px 26px 32px;
}

.footer{
  padding:12px 20px 18px;
  text-align:center;
  font-size:11px;
  color:var(--muted);
  border-top:1px solid var(--border);
  background:rgba(15,23,42,0.92);
}

/* Cards & layout utility */
.grid{
  display:grid;
  gap:16px;
}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
@media(max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(max-width:768px){
  .sidebar{display:none;}
  .topbar{padding:10px 15px;}
  .content{padding:15px;}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
}

.card{
  background:radial-gradient(circle at top left,#020617,#020617 40%,#020617 100%);
  border-radius:var(--radius-lg);
  padding:16px 18px;
  border:1px solid rgba(148,163,184,.2);
  box-shadow:var(--shadow-soft);
  position:relative;
  overflow:hidden;
}
.card::before{
  content:"";
  position:absolute;
  inset:-40%;
  opacity:.045;
  background-image:radial-gradient(circle at 0 0,#38bdf8,transparent 60%),
                    radial-gradient(circle at 100% 100%,#22c55e,transparent 55%);
  pointer-events:none;
}
.card-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:10px;
}
.card-title{
  font-size:14px;
  text-transform:uppercase;
  letter-spacing:.12em;
  color:var(--muted);
}
.card-value{
  font-size:24px;
  font-weight:700;
}
.card-sub{
  font-size:11px;
  color:var(--muted);
}

.badge{
  display:inline-flex;
  align-items:center;
  padding:2px 7px;
  border-radius:999px;
  font-size:11px;
  border:1px solid rgba(148,163,184,.4);
  color:var(--muted);
  gap:4px;
}
.badge-dot{
  width:7px;height:7px;border-radius:999px;background:var(--muted);
}
.badge-success{color:var(--success);border-color:rgba(34,197,94,.45);}
.badge-success .badge-dot{background:var(--success);}
.badge-danger{color:var(--danger);border-color:rgba(248,113,113,.45);}
.badge-warning{color:var(--warning);border-color:rgba(251,191,36,.45);}

/* Tables & forms */
.table-wrapper{overflow-x:auto;margin-top:8px;}
table{width:100%;border-collapse:collapse;font-size:13px;margin-top:4px;}
th,td{padding:7px 8px;border-bottom:1px solid rgba(31,41,55,.75);}
th{text-align:left;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.08em;}
tbody tr:hover{background:rgba(15,23,42,.7);}

.form-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px 18px;
}
@media(max-width:768px){
  .form-grid{grid-template-columns:1fr;}
}
.form-group{display:flex;flex-direction:column;gap:5px;margin-bottom:8px;}
.form-group label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;}
.form-control,select,textarea{
  background:rgba(15,23,42,.9);
  border-radius:10px;
  border:1px solid rgba(55,65,81,.9);
  padding:7px 10px;
  color:var(--text);
  font-size:13px;
}
textarea{min-height:80px;resize:vertical;}
.form-control:focus,select:focus,textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 1px rgba(56,189,248,.65);
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border-radius:999px;
  border:1px solid transparent;
  padding:7px 13px;
  font-size:12px;
  cursor:pointer;
  background:linear-gradient(135deg,#0ea5e9,#22c55e);
  color:#020617;
  text-decoration:none;
  font-weight:500;
  transition:var(--transition);
}
.btn:hover{transform:translateY(-1px) scale(1.01);box-shadow:0 16px 38px rgba(8,47,73,.75);}
.btn-outline{
  background:transparent;
  border-color:rgba(148,163,184,.4);
  color:var(--text);
}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn-danger{
  background:linear-gradient(135deg,#f97373,#ef4444);
  color:#020617;
}
.btn-sm{padding:4px 9px;font-size:11px;}

/* Login */
.auth-wrapper{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:20px;
}
.auth-card{
  max-width:360px;width:100%;
  background:radial-gradient(circle at top,#020617,#020617 40%,#000 110%);
  border-radius:20px;
  padding:22px 22px 24px;
  border:1px solid rgba(148,163,184,.3);
  box-shadow:0 26px 60px rgba(15,23,42,.9);
  position:relative;
  overflow:hidden;
}
.auth-card::before{
  content:"";
  position:absolute;
  inset:-40%;
  opacity:.1;
  background-image:radial-gradient(circle at 0 0,#38bdf8,transparent 60%),
                    radial-gradient(circle at 100% 120%,#22c55e,transparent 55%);
  pointer-events:none;
}
.auth-title{
  font-size:18px;
  font-weight:700;
  margin-bottom:4px;
}
.auth-sub{font-size:12px;color:var(--muted);margin-bottom:18px;}
.auth-footer{margin-top:10px;font-size:11px;color:var(--muted);}

/* Pills etc */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 8px;
  border-radius:999px;
  background:rgba(15,23,42,.95);
  border:1px solid rgba(55,65,81,1);
  font-size:11px;
  color:var(--muted);
}

/* Status tags */
.status-pill{
  display:inline-flex;
  align-items:center;
  padding:3px 8px;
  border-radius:999px;
  font-size:11px;
  gap:4px;
}
.status-pill span{
  width:7px;height:7px;border-radius:50%;
}
.status-active{background:rgba(34,197,94,.12);color:var(--success);}
.status-active span{background:var(--success);}
.status-inactive{background:rgba(148,163,184,.12);color:var(--muted);}
.status-unpaid{background:rgba(234,179,8,.16);color:var(--warning);}
.status-paid{background:rgba(34,197,94,.15);color:var(--success);}