:root{
  --primary:#2563eb;
  --danger:#dc2626;
  --bg:#f5f6f8;
  --border:#e5e7eb;
  --text:#111827;
  --muted:#6b7280;
}

*{box-sizing:border-box;}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial;
  background:var(--bg);
  color:var(--text);
}

.wrapper{
  max-width:1000px;
  margin:40px auto;
  padding:20px;
  background:white;
  border-radius:12px;
  box-shadow:0 4px 20px rgba(0,0,0,0.05);
}

h1,h2,h3{margin:0 0 10px 0;}

.title{margin:0;}
.subtitle{color:var(--muted);font-size:13px;margin-top:6px}

hr{margin:20px 0;border:none;border-top:1px solid var(--border);}

input,select{
  width:100%;
  padding:10px 12px;
  border-radius:8px;
  border:1px solid var(--border);
  font-size:14px;
}

label{display:block;font-size:13px;color:var(--muted);margin:10px 0 6px;}

.cb{display:block;margin:6px 0;font-size:13px;color:var(--text);}
.cb input{width:auto;margin-right:8px;}

button{
  padding:9px 12px;
  border:none;
  border-radius:8px;
  background:var(--primary);
  color:white;
  font-size:13px;
  cursor:pointer;
}

button:hover{filter:brightness(0.98);}

button.danger{background:var(--danger);}
button.secondary{background:#11182710;color:var(--text);}

button.small{padding:6px 10px;font-size:12px;border-radius:7px;}

a.link{color:var(--primary);text-decoration:none;font-size:13px;}
a.link:hover{text-decoration:underline;}

.badge{font-size:13px;color:var(--muted);}

.topbar{
  display:flex;
  justify-content:space-between;
  gap:10px;
  align-items:flex-start;
  margin-bottom:18px;
}

.topbar-right{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.card{
  background:white;
  border:1px solid var(--border);
  border-radius:12px;
  padding:16px;
  margin:14px 0;
}

.small{font-size:12px;color:white(--muted);}
.hint{margin-top:12px;color:var(--muted);font-size:13px;}

.stack{display:grid;gap:10px;max-width:420px;}

.actions-bar{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0 16px;}

.event-header{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;flex-wrap:wrap;}
.event-title{margin:0}
.event-actions{display:flex;gap:8px;flex-wrap:wrap;}

.pill{
  display:inline-block;
  padding:3px 8px;
  border-radius:999px;
  font-size:12px;
  margin-left:8px;
  background:#eef2ff;
  color:#1e40af;
}
.pill.closed{background:#f3f4f6;color:#374151;}

.participants{margin:0;padding-left:18px;}
.participants li{margin:2px 0;}

.row{margin:10px 0;}

table{width:100%;border-collapse:collapse;font-size:14px;margin-top:10px;}
th,td{padding:9px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;}
th{background:#fafafa;font-weight:600;}

.actions{display:flex;gap:6px;}

.total{margin-top:12px;}

.used-by{max-width:320px;}

.flash{display:grid;gap:8px;margin:10px 0 16px;}
.flash-item{padding:10px 12px;border-radius:10px;border:1px solid var(--border);font-size:13px;}
.flash-item.success{background:#ecfdf5;border-color:#a7f3d0;color:#065f46;}
.flash-item.error{background:#fef2f2;border-color:#fecaca;color:#991b1b;}

/* Modal */
.modal{display:none;position:fixed;inset:0;z-index:999;}
.modal.show{display:block;}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,0.45);}
.modal-card{
  position:relative;
  width:min(560px, calc(100% - 28px));
  margin:60px auto;
  background:white;
  border-radius:14px;
  padding:18px;
  box-shadow:0 20px 60px rgba(0,0,0,0.25);
}
.modal-x{
  position:absolute;
  top:10px;
  right:10px;
  width:34px;
  height:34px;
  border-radius:10px;
  background:#11182710;
  color:var(--text);
  font-size:18px;
  line-height:1;
}

.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:14px;flex-wrap:wrap;}

.settlement{display:grid;gap:6px;}
.balances{margin-top:12px;}

@media(max-width:700px){
  .wrapper{margin:0;border-radius:0;box-shadow:none;min-height:100vh;}
  th:nth-child(4),td:nth-child(4){display:none;}
  .modal-card{margin:18px auto;}
  .used-by{max-width:180px;}
}