:root{
  --bg:#f4f6f9; --panel:#fff; --line:#e2e6ee; --ink:#1f2933; --muted:#6b7280;
  --brand:#2f5bea; --brand2:#1d3fb3; --ok:#1a8f5c; --warn:#c47a12; --bad:#c0392b;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
.topbar{display:flex;align-items:center;gap:20px;background:var(--brand);color:#fff;padding:12px 20px}
.brand{font-size:20px;font-weight:800;letter-spacing:.5px}
.brand span{color:#ffd75e}
nav{display:flex;gap:6px}
.nav-btn{background:transparent;border:none;color:#e6ecff;font-size:14px;padding:8px 16px;border-radius:8px;cursor:pointer}
.nav-btn.active{background:rgba(255,255,255,.18);color:#fff;font-weight:600}
.status{margin-left:auto;font-size:13px;color:#dfe7ff}
main{padding:24px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:20px}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.spread{justify-content:space-between}
h2{margin:0 0 14px;font-size:18px}
.btn{background:var(--brand);color:#fff;border:none;border-radius:8px;padding:8px 16px;cursor:pointer;font-size:14px}
.btn:hover{background:var(--brand2)}
.btn.ghost{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn.ok{background:var(--ok)}
.btn.danger{background:var(--bad)}
.btn.sm{padding:4px 10px;font-size:13px}
input,select,textarea{font:inherit;padding:7px 9px;border:1px solid var(--line);border-radius:8px;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid #bcd0ff}
label{font-size:12px;color:var(--muted);display:block;margin-bottom:3px}
.field{margin-bottom:12px}
.field-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:10px;overflow:hidden}
th,td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
th{background:#fafbfd;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.3px}
tr.clickable{cursor:pointer}
tr.clickable:hover{background:#f5f8ff}
.tag{display:inline-block;padding:2px 8px;border-radius:20px;font-size:12px}
.tag.draft{background:#fdebd0;color:#8a5b0f}
.tag.posted{background:#d9f2e5;color:#12633c}
.tag.cancel{background:#f8d7da;color:#8f2b22}
.tag.not_paid{background:#e9ecf2;color:#4a5568}
.tag.partial{background:#fdecd9;color:#a15c07}
.tag.paid{background:#d9f2e5;color:#12633c}
.right{text-align:right}
.muted{color:var(--muted)}
.empty{color:var(--muted);padding:30px;text-align:center}
.modal{position:fixed;inset:0;background:rgba(20,30,50,.45);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50}
.modal.hidden{display:none}
.modal-box{background:#fff;border-radius:12px;width:100%;max-width:680px;max-height:85vh;overflow:auto;padding:20px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-size:18px;font-weight:700}
.icon-btn{background:none;border:none;font-size:26px;cursor:pointer;color:var(--muted)}
.lines-grid{margin-top:10px}
.line-row{display:grid;grid-template-columns:2fr 60px 90px 60px 120px 30px;gap:8px;margin-bottom:8px;align-items:end}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.cal-head{text-align:center;font-weight:600;color:var(--muted);padding:6px 0}
.cal-cell{min-height:86px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:4px;cursor:pointer}
.cal-cell.other{background:#fbfcfe;color:#b8c0cc}
.cal-cell .d{font-size:12px;color:var(--muted)}
.cal-evt{background:var(--brand);color:#fff;border-radius:4px;font-size:11px;padding:2px 4px;margin-top:3px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}

/* hide visible scrollbars (scrolling stays functional) */
::-webkit-scrollbar{width:0;height:0;display:none}
*{scrollbar-width:none;-ms-overflow-style:none}

/* autocomplete */
.ac{position:relative}
.ac-results{position:absolute;left:0;right:0;top:calc(100% + 4px);background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.12);max-height:260px;overflow:auto;z-index:60;display:none}
.ac-item{padding:9px 12px;cursor:pointer;font-size:14px;border-bottom:1px solid var(--line)}
.ac-item:last-child{border-bottom:none}
.ac-item:hover{background:#f5f8ff}
.ac-empty{padding:12px;color:var(--muted);font-size:13px}

/* customer notes */
.modal-sm{max-width:460px}
.notes-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.plus{width:26px;height:26px;border:none;border-radius:50%;background:#1a8f5c;color:#fff;font-size:18px;line-height:1;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.plus:hover{background:#157447}
.note-item{background:#fafbfd;border:1px solid var(--line);border-radius:8px;padding:8px 10px;margin-bottom:8px}
.note-body{font-size:14px;white-space:pre-wrap}
.note-time{font-size:11px;color:var(--muted);margin-top:4px}

/* calendar week view + drag-drop */
.week-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.week-col{min-height:240px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:6px;cursor:pointer}
.cal-cell.drop,.week-col.drop{outline:2px dashed var(--brand);background:#eef3ff}
.btn.ghost.on{background:var(--brand);color:#fff}
.cal-evt{cursor:grab}
.cal-evt:active{cursor:grabbing}