:root{
  --paper:#F1F3F2;
  --ink:#10181A;
  --ink-soft:#3C4A4C;
  --panel:#0E211E;
  --signal:#12805F;
  --signal-bright:#1FA377;
  --danger:#A3341B;
  --line:#D3D9D7;
  --max:1080px;
}
*{box-sizing:border-box;}
html{overflow-x:hidden;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:'IBM Plex Sans',system-ui,sans-serif;font-size:16px;line-height:1.55;
  overflow-x:hidden;
}
h1,h2,h3{font-family:'Space Grotesk',system-ui,sans-serif;font-weight:600;margin:0 0 6px;letter-spacing:-0.01em;}
a{color:var(--signal);text-decoration:none;}
a:hover{text-decoration:underline;}
.mono{font-family:'IBM Plex Mono',monospace;}
table{border-collapse:collapse;width:100%;}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;}

header.topbar{background:var(--panel);color:#DCEAE5;border-bottom:1px solid rgba(255,255,255,.1);}
header.topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;position:relative;}
header.topbar a.brand{color:#fff;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.05rem;}
header.topbar nav{display:flex;gap:20px;align-items:center;}
header.topbar nav a{color:#B7CFC8;font-size:.92rem;}
header.topbar nav a.active,header.topbar nav a:hover{color:#fff;text-decoration:none;}
header.topbar .who{color:#7C9A92;font-size:.85rem;}
.nav-toggle{display:none;}

main{padding:36px 0 60px;}
.settings-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:24px;}
.settings-tabs a{padding:10px 4px;margin-right:20px;font-size:.92rem;color:var(--ink-soft);text-decoration:none;border-bottom:2px solid transparent;}
.settings-tabs a:hover{color:var(--ink);text-decoration:none;}
.settings-tabs a.active{color:var(--ink);border-bottom-color:var(--signal);font-weight:500;}

.page-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.page-head h1{font-size:1.6rem;}
.page-head p{margin:0;color:var(--ink-soft);font-size:.95rem;}

.btn{display:inline-block;background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:2px;
  border:1px solid var(--ink);font-size:.92rem;font-weight:500;cursor:pointer;text-decoration:none;}
.btn:hover{background:var(--paper);color:var(--ink);text-decoration:none;}
.btn-outline{background:transparent;color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:var(--paper);}
.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff;}
.btn-danger:hover{background:transparent;color:var(--danger);}
.btn-signal{background:var(--signal);border-color:var(--signal);color:#fff;}
.btn-signal:hover{background:transparent;color:var(--signal);}
.btn-small{padding:6px 12px;font-size:.82rem;}

.card{background:#fff;border:1px solid var(--line);border-radius:4px;padding:22px;}
.card + .card{margin-top:16px;}

.data-table{background:#fff;border:1px solid var(--line);border-radius:4px;overflow:hidden;}
.data-table th,.data-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:.92rem;}
.data-table th{background:var(--paper);font-weight:600;font-size:.8rem;color:var(--ink-soft);}
.data-table tr:last-child td{border-bottom:none;}
.data-table tr:hover td{background:#FAFBFA;}
.empty-row td{color:var(--ink-soft);text-align:center;padding:34px 16px;}

.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.78rem;font-weight:500;}
.badge-draft{background:#E7E9E8;color:var(--ink-soft);}
.badge-sent{background:#E4EEFB;color:#1B5A9C;}
.badge-accepted,.badge-paid{background:#E1F1EA;color:var(--signal);}
.badge-declined{background:#FBE7E2;color:var(--danger);}
.badge-overdue{background:#FBE7E2;color:var(--danger);}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:32px;}
.stat-grid > .stat{min-width:0;}
.stat{background:#fff;border:1px solid var(--line);border-radius:4px;padding:18px 20px;min-width:0;}
.stat .num{font-family:'IBM Plex Mono',monospace;font-size:1.7rem;font-weight:500;overflow-wrap:anywhere;line-height:1.15;}
.stat .label{color:var(--ink-soft);font-size:.85rem;margin-top:4px;}

form .field{margin-bottom:18px;}
form label{display:block;font-size:.88rem;font-weight:500;margin-bottom:6px;}
form input[type=text],form input[type=email],form input[type=tel],form input[type=date],
form input[type=number],form input[type=password],form select,form textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:3px;font-family:inherit;font-size:.95rem;background:#fff;color:var(--ink);
}
form textarea{min-height:90px;resize:vertical;}
form .hint{color:var(--ink-soft);font-size:.82rem;margin-top:4px;}
form .actions{margin-top:24px;display:flex;gap:10px;}

.items-table input{padding:8px 10px;font-size:.9rem;}
.items-table td{vertical-align:top;}
.items-table .qty,.items-table .price{width:110px;}
.items-table .line-total{width:120px;text-align:right;font-family:'IBM Plex Mono',monospace;padding-top:16px;}
.items-table .remove-row{width:30px;}

.flash{padding:12px 18px;border-radius:3px;margin-bottom:20px;font-size:.92rem;}
.flash-success{background:#E1F1EA;color:var(--signal);}
.flash-error{background:#FBE7E2;color:var(--danger);}

.totals-box{max-width:320px;margin-left:auto;margin-top:10px;}
.totals-box .row{display:flex;justify-content:space-between;padding:8px 0;font-size:.95rem;}
.totals-box .row.grand{border-top:1px solid var(--line);font-weight:600;font-size:1.15rem;font-family:'IBM Plex Mono',monospace;}

.detail-grid{display:grid;grid-template-columns:1.3fr 0.7fr;gap:20px;align-items:start;}
.detail-grid > *{min-width:0;}
.meta-list div{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line);font-size:.9rem;}
.meta-list div:last-child{border-bottom:none;}
.meta-list span:first-child{color:var(--ink-soft);}

@media (max-width:760px){
  .detail-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat .num{font-size:1.3rem;}

  /* Hamburger toggle: a plain button drawn as three CSS bars, no image asset needed. */
  .nav-toggle{
    display:block;width:34px;height:34px;padding:0;border:none;background:none;
    position:relative;flex-shrink:0;cursor:pointer;
  }
  .nav-toggle span,.nav-toggle::before,.nav-toggle::after{
    content:'';position:absolute;left:6px;right:6px;height:2px;background:#fff;
    transition:transform .15s ease,opacity .15s ease;
  }
  .nav-toggle::before{top:11px;}
  .nav-toggle span{top:17px;}
  .nav-toggle::after{top:23px;}
  .nav-toggle.open::before{transform:translateY(6px) rotate(45deg);}
  .nav-toggle.open::after{transform:translateY(-6px) rotate(-45deg);}
  .nav-toggle.open span{opacity:0;}

  /* The nav itself becomes a dropdown panel, hidden until toggled open. */
  header.topbar nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--panel);border-top:1px solid rgba(255,255,255,.1);
    box-shadow:0 8px 16px rgba(0,0,0,.2);
  }
  header.topbar nav.open{display:flex;}
  header.topbar nav a{padding:14px 24px;border-bottom:1px solid rgba(255,255,255,.08);}
  header.topbar nav a.who{border-top:1px solid rgba(255,255,255,.15);margin-top:4px;}

  /* A wide table would otherwise force the whole page to scroll sideways —
     contain the scroll to the table itself instead. */
  table.data-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap;}
}

/* ---- print layout (quotes/invoices) ---- */
@media print{
  header.topbar,.no-print{display:none !important;}
  body{background:#fff;}
  main{padding:0;}
}
.print-sheet{background:#fff;border:1px solid var(--line);border-radius:4px;padding:48px;max-width:760px;margin:0 auto;}
.print-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:40px;}
.print-head h1{font-size:1.5rem;}
.print-head .brand{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.2rem;}
.print-head .doc-number{font-family:'IBM Plex Mono',monospace;color:var(--ink-soft);margin-top:4px;}
.bill-to{margin-bottom:32px;}
.bill-to .label{font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-soft);margin-bottom:6px;}
.print-sheet table{margin-top:10px;}
.print-sheet th{text-align:left;font-size:.8rem;color:var(--ink-soft);border-bottom:1px solid var(--line);padding:8px 0;}
.print-sheet td{padding:10px 0;border-bottom:1px solid var(--line);}
.print-sheet .amount{text-align:right;font-family:'IBM Plex Mono',monospace;}
.print-actions{max-width:760px;margin:0 auto 20px;display:flex;justify-content:flex-end;gap:10px;}