:root{--bg:#f6f3ef;--card:#fff;--text:#1f1f1f;--muted:#6f6f6f;--border:#ddd6ce;--accent:#9b6b43;--danger:#b00020;--success:#1f7a3f;--warning:#b26a00}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}
.header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--border);padding:12px}
.header-inner{max-width:1100px;margin:auto;display:flex;justify-content:space-between;gap:10px}
.wrap{max-width:1100px;margin:auto;padding:12px}
.card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:14px;margin-bottom:14px}
h1{font-size:21px;margin:0}h2{font-size:18px;margin:0 0 12px}h3{font-size:16px;margin:18px 0 8px}
label{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px;font-weight:bold}
input,select,textarea{width:100%;border:1px solid var(--border);border-radius:12px;padding:12px;font-size:16px;background:#fff}
textarea{min-height:75px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{display:inline-block;border:0;background:var(--accent);color:#fff;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:bold;text-decoration:none;cursor:pointer;margin-top:10px}
.btn.secondary{background:#eee7df;color:#1f1f1f;border:1px solid var(--border)}
.btn.danger{background:var(--danger)}
.btn.success{background:var(--success)}
.btn.small{padding:7px 9px;font-size:12px;margin:2px}
.nav a{margin-left:8px;color:var(--accent);font-weight:bold;text-decoration:none}
.total{background:#fff8ef;border:1px solid #e6c7a7;padding:14px;border-radius:14px;font-size:18px;font-weight:bold;margin:12px 0}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;min-width:650px}
th,td{border-bottom:1px solid var(--border);text-align:left;padding:10px;font-size:14px;vertical-align:top}
th{font-size:12px;color:var(--muted);text-transform:uppercase}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:bold}
.unpaid{background:#fff1d6;color:var(--warning)}
.paid{background:#dff4e5;color:var(--success)}
.alert{padding:12px;border-radius:12px;margin:10px 0;font-weight:bold}
.alert.success{background:#dff4e5;color:var(--success)}
.alert.danger{background:#ffe1e6;color:var(--danger)}
.photo{width:68px;height:68px;border-radius:10px;object-fit:cover;border:1px solid var(--border)}
.muted{color:var(--muted);font-size:13px}
.invoice-lines{display:flex;flex-direction:column;gap:8px}
.line-row{display:grid;grid-template-columns:2fr .7fr 1fr 1fr 42px;gap:7px;align-items:end;background:#faf8f5;border:1px solid var(--border);border-radius:12px;padding:8px}
.line-row input,.line-row select{padding:10px;font-size:15px;border-radius:10px}
.line-total{font-weight:bold;background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px;min-height:42px}
.remove-line{background:var(--danger);color:#fff;border:0;border-radius:10px;height:42px;font-weight:bold;cursor:pointer}
.table-head{display:grid;grid-template-columns:2fr .7fr 1fr 1fr 42px;gap:7px;color:var(--muted);font-size:12px;font-weight:bold;padding:0 8px}
.invoice-card{border:1px solid var(--border);border-radius:14px;padding:12px;margin-bottom:10px;background:#fff}
.invoice-head{display:grid;grid-template-columns:36px 1fr auto auto;gap:10px;align-items:center}
.plus{width:32px;height:32px;border-radius:50%;border:1px solid var(--border);background:#eee7df;font-weight:bold;cursor:pointer}
.details{display:none;margin-top:10px}
.details.open{display:block}
.linkbox{background:#faf8f5;border:1px solid var(--border);border-radius:12px;padding:10px;word-break:break-all;margin:8px 0}
.edit-row{display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:end;margin-bottom:8px}
@media(max-width:700px){.grid{grid-template-columns:1fr}.header-inner{display:block}.invoice-head{grid-template-columns:34px 1fr}.invoice-head .right{grid-column:2}.table-head{display:none}.line-row{grid-template-columns:1fr 1fr}.product-cell{grid-column:1/3}.total-cell{grid-column:1}.remove-line{grid-column:2}table{min-width:620px}}