:root{--bg:#f6f7fb;--card:#fff;--text:#1f2937;--muted:#667085;--primary:#1d4ed8;--danger:#b42318;--ok:#047857;--border:#e5e7eb}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}header{display:flex;justify-content:space-between;align-items:center;padding:14px 22px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0}a{color:var(--primary);text-decoration:none}.brand a{font-weight:700;font-size:20px;color:var(--text)}nav a{margin-left:14px}main{max-width:1100px;margin:24px auto;padding:0 16px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;margin-bottom:18px;box-shadow:0 1px 2px rgba(0,0,0,.04)}label{display:block;font-weight:600;margin:12px 0 5px}input,select,textarea{width:100%;padding:10px;border:1px solid #cfd4dc;border-radius:10px;background:#fff}button,.btn{display:inline-block;padding:10px 14px;border-radius:10px;border:0;background:var(--primary);color:white;cursor:pointer;font-weight:600}.btn.secondary{background:#475467}.btn.danger{background:var(--danger)}.btn.ok{background:var(--ok)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}.table{width:100%;border-collapse:collapse;margin-top:10px}.table th,.table td{border-bottom:1px solid var(--border);padding:10px;text-align:left}.muted{color:var(--muted)}.error{background:#fee4e2;color:#912018;padding:10px;border-radius:10px}.success{background:#dcfae6;color:#05603a;padding:10px;border-radius:10px}.right{text-align:right}.actions{display:flex;gap:8px;flex-wrap:wrap}.small{font-size:13px}.balance-pos{color:var(--ok);font-weight:700}.balance-neg{color:var(--danger);font-weight:700}.participant-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:8px}@media(max-width:700px){.table{font-size:14px}.participant-row{grid-template-columns:1fr}header{align-items:flex-start;gap:8px;flex-direction:column}nav a{margin-left:0;margin-right:10px}}
.check{display:flex;align-items:center;gap:8px;font-weight:500}.check input{width:auto}

/* Responsive tables: on small screens rows become readable cards. */
.table-wrapper{width:100%;overflow-x:auto}
.small-btn{padding:8px 10px;font-size:13px}
.row-actions{text-align:right;white-space:nowrap}
.expense-title-cell{font-weight:700}
.amount-cell{font-weight:700}

@media(max-width:760px){
  main{padding:0 10px;margin:14px auto}
  .card{padding:14px;border-radius:12px}
  .responsive-table{border-collapse:separate;border-spacing:0;width:100%;font-size:14px}
  .responsive-table thead,.responsive-table tbody{display:block}
  .responsive-table tr:first-child{display:none}
  .responsive-table tr{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;margin:10px 0;padding:10px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
  .responsive-table td{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;border-bottom:1px solid var(--border);padding:8px 0;text-align:right;word-break:break-word}
  .responsive-table td:last-child{border-bottom:0;padding-bottom:0}
  .responsive-table td::before{content:attr(data-label);font-weight:700;color:var(--muted);text-align:left;min-width:105px;max-width:45%}
  .responsive-table td.row-actions{display:block;text-align:left;padding-top:10px}
  .responsive-table td.row-actions::before{content:'';display:none}
  .responsive-table td.row-actions .btn{width:100%;text-align:center}
  .responsive-table .right{text-align:right}
  .responsive-table .total-row{display:flex;justify-content:space-between;align-items:center;background:#f9fafb}
  .responsive-table .total-row th{border:0;padding:4px 0}
  .expense-table tr{position:relative}
  .expense-table .expense-title-cell{font-size:16px;color:var(--text)}
}


/* V6: layout a schede reali per evitare scroll orizzontale nelle spese. */
.expense-card-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;margin-top:12px;width:100%;max-width:100%;overflow:hidden}
.expense-card{border:1px solid var(--border);border-radius:14px;padding:14px;background:#fff;max-width:100%;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.expense-card-main{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;min-width:0}
.expense-card-title{font-weight:700;font-size:16px;line-height:1.25;word-break:break-word;overflow-wrap:anywhere}
.expense-card-date{color:var(--muted);font-size:13px;margin-top:4px}
.expense-card-total{font-weight:800;white-space:nowrap;text-align:right}
.expense-card-meta{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px;color:var(--text);font-size:14px;min-width:0}
.expense-card-meta div{min-width:0;word-break:break-word;overflow-wrap:anywhere;background:#f9fafb;border-radius:10px;padding:8px}
.expense-card-meta span{display:block;color:var(--muted);font-weight:700;font-size:12px;margin-bottom:2px}
.expense-card-actions{margin-top:12px}.expense-card-actions .btn{width:100%;text-align:center}
.split-list{display:grid;gap:8px;margin-top:10px}.split-row{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--border);border-radius:12px;padding:10px 12px;background:#fff}.split-row span{min-width:0;word-break:break-word}.split-row strong{white-space:nowrap}.split-total{background:#f9fafb;font-weight:800}
@media(max-width:520px){.expense-card-list{grid-template-columns:1fr}.expense-card-main{display:block}.expense-card-total{text-align:left;margin-top:8px;font-size:18px}.expense-card-meta{grid-template-columns:1fr}.actions .btn,.actions button{width:100%}.actions form{width:100%}}