:root{
  --brand:#2d6a3e;
  --brand-dark:#1f4d2c;
  --brand-light:#e8f3ea;
  --ink:#1c2620;
  --muted:#657268;
  --paper:#ffffff;
  --bg:#f5f7f5;
  --border:#e1e6e2;
  --danger:#c0392b;
  --pink:#c9256f;
  --radius:10px;
  --shadow:0 1px 3px rgba(20,40,25,0.08), 0 1px 2px rgba(20,40,25,0.06);
}

*{box-sizing:border-box;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
}
a{color:var(--brand);text-decoration:none;}
a:hover{text-decoration:underline;}

.topbar{
  background:var(--paper);
  border-bottom:1px solid var(--border);
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:60px;
  position:sticky;top:0;z-index:10;
}
.topbar .brand{font-weight:800;color:var(--brand-dark);font-size:1.1rem;letter-spacing:-0.02em;}
.topbar nav{display:flex;gap:4px;}
.topbar nav a{
  padding:8px 14px;border-radius:8px;color:var(--ink);font-weight:600;font-size:0.92rem;
}
.topbar nav a:hover{background:var(--brand-light);text-decoration:none;}
.topbar nav a.active{background:var(--brand);color:#fff;}
.topbar .logout{color:var(--muted);font-size:0.85rem;}

.wrap{max-width:1100px;margin:0 auto;padding:28px 20px 60px;}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:10px;}
.page-head h1{font-size:1.5rem;margin:0;color:var(--brand-dark);}
.page-head p{color:var(--muted);margin:4px 0 0;font-size:0.92rem;}

.btn{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand);color:#fff;border:none;
  padding:10px 16px;border-radius:8px;font-weight:600;font-size:0.9rem;
  cursor:pointer;text-decoration:none;
}
.btn:hover{background:var(--brand-dark);text-decoration:none;}
.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--border);}
.btn.secondary:hover{background:var(--bg);}
.btn.danger{background:var(--danger);}
.btn.small{padding:6px 10px;font-size:0.8rem;}
.btn.sms{background:#0a7d3b;}

.card{
  background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.card-pad{padding:20px;}

table{width:100%;border-collapse:collapse;}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:0.92rem;}
th{background:var(--brand-light);color:var(--brand-dark);font-weight:700;font-size:0.8rem;text-transform:uppercase;letter-spacing:0.02em;}
tr:last-child td{border-bottom:none;}
tr:hover td{background:#fafcfa;}

.badge{display:inline-block;padding:3px 10px;border-radius:100px;font-size:0.75rem;font-weight:700;}
.badge.paid{background:#e3f6e8;color:#1f7a3d;}
.badge.pending{background:#fdeeea;color:#c0392b;}
.badge.unpaid{background:#fdeeea;color:#c0392b;}

.grid-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.grid-form .full{grid-column:1/-1;}
label{display:block;font-size:0.82rem;font-weight:600;color:var(--muted);margin-bottom:5px;}
input[type=text],input[type=email],input[type=tel],input[type=number],input[type=date],input[type=password],textarea,select{
  width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:7px;font-size:0.92rem;font-family:inherit;background:#fff;
}
input:focus,textarea:focus,select:focus{outline:2px solid var(--brand);outline-offset:-1px;}
textarea{resize:vertical;min-height:70px;}

.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:0.9rem;font-weight:600;}
.flash.success{background:#e3f6e8;color:#1f7a3d;}
.flash.error{background:#fdeeea;color:#c0392b;}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);}
.login-card{width:100%;max-width:360px;padding:34px;}
.login-card h1{color:var(--brand-dark);font-size:1.4rem;margin:0 0 4px;}
.login-card p{color:var(--muted);margin:0 0 24px;font-size:0.9rem;}

.month-grid{overflow-x:auto;}
.month-grid table{min-width:900px;}
.cell-toggle{
  width:34px;height:34px;border-radius:8px;border:2px solid var(--border);
  cursor:pointer;display:flex;align-items:center;justify-content:center;margin:0 auto;
  background:#fff;transition:all .12s;
}
.cell-toggle.paid{background:var(--brand);border-color:var(--brand);color:#fff;}
.cell-toggle:hover{border-color:var(--brand);}
.cell-toggle.readonly{cursor:default;}
.cell-toggle.readonly:hover{border-color:var(--border);}
.cell-toggle.readonly.paid:hover{border-color:var(--brand);}

.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:22px;}
.stat{padding:16px 18px;}
.stat .label{color:var(--muted);font-size:0.78rem;text-transform:uppercase;font-weight:700;letter-spacing:0.03em;}
.stat .value{font-size:1.6rem;font-weight:800;color:var(--brand-dark);margin-top:4px;}

.line-items{width:100%;}
.line-items input{padding:7px 9px;}
.remove-row{color:var(--danger);cursor:pointer;font-weight:700;background:none;border:none;font-size:1.1rem;}

.actions-inline{display:flex;gap:6px;flex-wrap:wrap;}

@media(max-width:640px){
  .grid-form{grid-template-columns:1fr;}
  .topbar nav a{padding:8px 10px;font-size:0.82rem;}
  .wrap{padding:18px 12px 40px;}
}

.hub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;}
.hub-card{
  background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px 20px;display:block;color:var(--ink);text-decoration:none;
  transition:transform .1s, box-shadow .1s;
}
.hub-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(20,40,25,0.12);text-decoration:none;}
.hub-label{color:var(--muted);font-size:0.78rem;text-transform:uppercase;font-weight:700;letter-spacing:0.03em;}
.hub-value{font-size:1.5rem;font-weight:800;color:var(--brand-dark);margin-top:5px;}
.hub-card-soon{opacity:0.5;cursor:default;}
.hub-card-soon:hover{transform:none;box-shadow:var(--shadow);}