:root{
  --navy:#0f172a; --teal:#0f766e; --lightgreen:#f0fdf4; --gray:#64748b;
  --border:#e2e8f0; --bg:#f8fafc; --text:#1e293b; --red:#dc2626;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#eef2f7;padding:1px 5px;border-radius:4px;font-size:.88em}
code.wrap{word-break:break-all}

/* top bar */
.topbar{display:flex;align-items:center;gap:24px;background:var(--navy);color:#fff;
  padding:12px 24px}
.brand{font-weight:700;font-size:18px;letter-spacing:.5px}
.brand span{color:#5eead4;font-weight:400}
.brand.big{font-size:28px}
.topbar nav{display:flex;gap:18px;flex:1}
.topbar nav a{color:#cbd5e1;font-weight:500;padding:4px 0}
.topbar nav a.on,.topbar nav a:hover{color:#fff;text-decoration:none;border-bottom:2px solid #5eead4}
.logout{color:#94a3b8;font-size:13px}

.wrap{max-width:1040px;margin:28px auto;padding:0 20px}
.foot{text-align:center;color:var(--gray);font-size:12px;padding:24px}

h1{font-size:24px;margin:0 0 16px}
h2{font-size:17px;margin:28px 0 12px;color:var(--navy)}
.muted{color:var(--gray)}
.back{font-size:14px}

/* cards */
.cards{display:flex;flex-wrap:wrap;gap:14px;margin:18px 0}
.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px 20px;min-width:150px}
.card .num{font-size:22px;font-weight:700;color:var(--navy)}
.card .lbl{color:var(--gray);font-size:13px;margin-top:2px}
.card.hot{background:var(--lightgreen);border-color:#99f6e4}
a.card:hover{text-decoration:none;box-shadow:0 2px 8px rgba(15,118,110,.15)}

/* tables */
table.grid{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);
  border-radius:10px;overflow:hidden}
table.grid th,table.grid td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--border)}
table.grid thead th{background:#f1f5f9;font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--gray)}
table.grid tbody tr:last-child td{border-bottom:none}
table.grid .r{text-align:right}
table.grid.sub{margin:10px 0}

table.kv{border-collapse:collapse}
table.kv th{text-align:left;color:var(--gray);font-weight:500;padding:4px 16px 4px 0;vertical-align:top}
table.kv td{padding:4px 0}

.twocol{display:grid;grid-template-columns:1fr 1fr;gap:30px}
@media(max-width:720px){.twocol{grid-template-columns:1fr}}
.list{margin:0;padding-left:18px}
.list li{margin:4px 0}

/* tags */
.tag{display:inline-block;background:#e2e8f0;color:#475569;border-radius:20px;
  padding:1px 9px;font-size:12px;font-weight:600}
.tag.ok{background:var(--lightgreen);color:var(--teal)}

/* buttons */
.btn{display:inline-block;background:var(--teal);color:#fff;border:none;border-radius:8px;
  padding:9px 16px;font-size:14px;font-weight:600;cursor:pointer}
.btn:hover{background:#0d655e;text-decoration:none}
.btn.sm{padding:5px 11px;font-size:13px}

/* alerts */
.alert{padding:10px 14px;border-radius:8px;margin:14px 0;font-size:14px}
.alert.ok{background:var(--lightgreen);color:#065f46;border:1px solid #99f6e4}
.alert.err{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}

/* pay cards */
.paycard{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;margin:16px 0}
.payhead{display:flex;justify-content:space-between;align-items:center;gap:10px}
.payhead .total{font-size:20px;font-weight:700;color:var(--navy)}
.payform{margin-top:12px;padding-top:14px;border-top:1px dashed var(--border);
  display:flex;flex-direction:column;gap:6px;max-width:520px}
.payform label{font-size:13px;font-weight:600;margin-top:6px}
.payform input{padding:8px;border:1px solid var(--border);border-radius:8px;font-size:14px}
.payform .req{color:var(--red);font-weight:700;font-size:11px}
.payform button{margin-top:10px;align-self:flex-start}

/* login */
.login-card{max-width:340px;margin:8vh auto;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:30px;text-align:center}
.login-card .brand{color:var(--navy)}
.login-card form{display:flex;flex-direction:column;gap:8px;margin-top:18px;text-align:left}
.login-card label{font-size:13px;font-weight:600}
.login-card input{padding:10px;border:1px solid var(--border);border-radius:8px;font-size:15px}
.login-card button{margin-top:8px}