:root{--bg:#f3f4f6;--card:#fff;--ink:#111;--gray:#6b7280;--gray-light:#9ca3af;--line:#e5e7eb;--dark:#111}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
.hidden{display:none !important}
.topbar{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1280px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:12px}
.brand-mini{display:flex;align-items:center;gap:10px}
.brand-mini-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;color:#fff;font-weight:800;font-size:20px;background:linear-gradient(135deg,#f97316,#dc2626)}
.brand-mini-text{display:grid;line-height:1.1}
.brand-mini-text strong{font-size:16px;letter-spacing:-0.01em}
.brand-mini-text small{font-size:11px;color:var(--gray);text-transform:uppercase;letter-spacing:0.12em;font-weight:600}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.save-pill{display:none;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 12px;font-size:12px;font-weight:600;color:var(--gray)}
.save-pill .dot{width:7px;height:7px;border-radius:999px;background:#22c55e}
@media (min-width:640px){.save-pill{display:inline-flex}}
.btn{font-family:inherit;font-size:13px;font-weight:700;border-radius:999px;padding:10px 16px;cursor:pointer;border:1px solid transparent}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#000}
.btn-ghost{background:#fff;color:#374151;border-color:var(--line)}
.btn-ghost:hover{border-color:var(--dark)}
.btn-full{width:100%;padding:12px 16px}
.tabs{max-width:1280px;margin:0 auto;padding:0 16px 12px;display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#fff}
@media (min-width:1024px){.tabs{display:none}}
.tab{border:none;border-radius:10px;padding:9px;font-family:inherit;font-size:13px;font-weight:700;cursor:pointer;color:var(--gray);background:transparent}
.tab-active{background:#f3f4f6;color:var(--ink)}
.layout{max-width:1280px;margin:0 auto;padding:20px 16px 24px;display:grid;gap:20px;align-items:start}
@media (min-width:1024px){.layout{grid-template-columns:420px minmax(0,1fr);padding:24px}.preview-wrap{position:sticky;top:96px}}
.editor{display:flex;flex-direction:column;gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:12px}
.card-head h2{margin:0;font-size:14px;font-weight:800;letter-spacing:-0.01em}
.card-head p{margin:3px 0 0;font-size:12px;color:var(--gray)}
.step{font-size:11px;font-weight:800;color:var(--gray-light);border:1px solid var(--line);background:#fff;border-radius:999px;padding:3px 10px}
.grid{display:grid;gap:10px}
.grid-2{display:grid;gap:10px;grid-template-columns:1fr 1fr}
@media (max-width:420px){.grid-2{grid-template-columns:1fr}}
.lbl{display:grid;gap:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.07em;color:var(--gray)}
.field{width:100%;font-family:inherit;font-size:13.5px;font-weight:500;color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:9px 11px;outline:none;text-transform:none;letter-spacing:normal}
.field:focus{border-color:#ea580c;box-shadow:0 0 0 3px rgba(234,88,12,0.12)}
.hint{font-size:11px;line-height:1.5;color:var(--gray-light);margin:6px 0 0}
.link-danger{background:none;border:none;padding:0;font-family:inherit;font-size:12px;font-weight:700;color:#dc2626;cursor:pointer;text-align:left}
.link-danger:hover{text-decoration:underline}
.logo-row{display:flex;gap:12px;margin-bottom:12px;align-items:flex-start}
.logo-box{width:72px;height:72px;flex:none;cursor:pointer;border:1.5px dashed #d1d5db;border-radius:14px;background:#fafafa;overflow:hidden;display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--gray-light)}
.logo-box img{width:100%;height:100%;object-fit:contain}
.logo-side{display:grid;gap:4px;align-content:start}
.items{display:grid;gap:8px;margin-top:10px}
.item-row{border:1.5px solid var(--line);border-radius:12px;background:#fff;padding:10px;display:grid;gap:8px}
.item-top{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:start}
.mini-lbl{display:grid;gap:4px;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:0.07em;color:var(--gray-light)}
.icon-btn{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;border:1px solid var(--line);background:#fafafa;color:var(--gray-light);font-size:14px;cursor:pointer}
.icon-btn:hover{color:#dc2626;border-color:#fecaca;background:#fef2f2}
.add-item{margin-top:10px;width:100%;font-family:inherit;font-size:13px;font-weight:800;color:#c2410c;border:1.5px dashed rgba(234,88,12,0.45);background:rgba(234,88,12,0.06);border-radius:12px;padding:10px;cursor:pointer}
.add-item:hover{background:rgba(234,88,12,0.12)}
.total-line{font-size:13px;color:var(--gray);margin:10px 0 0}
.total-line strong{color:var(--ink)}
.sign-row{display:flex;align-items:center;gap:12px}
.sign-row img{width:140px;height:70px;object-fit:contain;border:1px solid var(--line);border-radius:10px;background:#fff}
.preview-wrap{min-width:0}
.preview-label{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:0.16em;color:var(--gray);margin:0 0 10px}
.paper{background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:12px;box-shadow:0 24px 60px -40px rgba(0,0,0,0.35);padding:40px 44px;width:100%;max-width:820px;margin:0 auto;aspect-ratio:210/297;min-height:480px;display:flex;flex-direction:column}
@media (max-width:640px){.paper{padding:26px 20px;min-height:420px}}
.inv-top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}
.inv-brand{display:flex;align-items:center}
.pv-logo{height:46px;max-width:190px;object-fit:contain}
.logo-text{font-size:30px;font-weight:800;letter-spacing:-0.03em;background:linear-gradient(90deg,#f97316,#ef4444 55%,#dc2626);-webkit-background-clip:text;background-clip:text;color:transparent}
.inv-title-block{text-align:right}
.inv-title-block h1{margin:0;font-size:30px;font-weight:800;letter-spacing:0.02em;color:#000}
.inv-dates{margin-top:6px;display:grid;grid-template-columns:auto auto auto;justify-content:end;column-gap:6px;row-gap:4px;font-size:13px;color:var(--gray)}
.inv-dlabel{text-align:left}
.inv-dcolon{text-align:center}
.inv-dval{text-align:left}
.divider{border:none;border-top:1px solid var(--line);margin:20px 0}
.inv-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:560px){.inv-cols{grid-template-columns:1fr}}
.sender-name{margin:0;font-size:14px;font-weight:700;color:#000}
.sender-line{margin:3px 0 0;font-size:13px;color:#222}
.bill-label{margin:0;font-size:11px;font-weight:600;letter-spacing:0.06em;color:var(--gray)}
.bill-name{margin:5px 0 0;font-size:14px;font-weight:700;color:#000}
.inv-table{margin-top:22px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.tbl-head{background:#111;color:#fff;font-size:13px;font-weight:600;padding:12px 16px;border-radius:9px 9px 0 0}
.tbl-body{background:#fff}
.tbl-item{padding:13px 16px}
.tbl-item+.tbl-item{border-top:1px solid var(--line)}
.tbl-title{margin:0;font-size:13.5px;font-weight:700;color:#000}
.tbl-sub{margin:3px 0 0;font-size:12.5px;color:var(--gray)}
.tbl-total{margin:12px 0 0;text-align:right;font-size:14px;font-weight:700;color:#000}
.tbl-total span{font-weight:800}
.inv-bottom{margin-top:auto;padding-top:30px;display:flex;justify-content:space-between;align-items:flex-start;gap:24px}
@media (max-width:560px){.inv-bottom{flex-direction:column}}
.ket-box{border:1px solid var(--line);border-radius:8px;padding:14px 16px;min-width:250px;max-width:340px}
.ket-title{margin:0 0 8px;font-size:11px;font-weight:700;letter-spacing:0.08em;color:var(--gray)}
.ket-line{margin:4px 0 0;font-size:13px;color:#111}
.sign-block{width:230px;text-align:center;margin-left:auto}
.sign-date{margin:0;font-size:13px;color:#111}
.sign-img{width:100%;height:95px;object-fit:contain;margin:4px auto;display:block}
.sign-empty{height:95px;color:#fff;user-select:none}
.sign-name{margin:0;font-size:14px;font-weight:700;color:#000}
.preview-actions{margin-top:12px;display:flex;gap:8px}
.preview-hint{font-size:11px;color:var(--gray-light);text-align:center}
.footer{max-width:1280px;margin:0 auto;padding:0 16px 28px;font-size:11px;color:var(--gray-light);text-align:center}
@media print{@page{size:A4;margin:10mm}html,body{margin:0;padding:0}body{background:#fff}.no-print{display:none !important}#editorPane{display:none !important}.layout{display:block !important;max-width:none;margin:0;padding:0}#previewPane,.preview-wrap{display:block !important;position:static !important}body[data-tab="editor"] #previewPane,body[data-tab="preview"] #previewPane{display:block !important;position:static !important}.preview-label{display:none !important}.paper{display:flex !important;flex-direction:column;visibility:visible !important;border:none;border-radius:0;box-shadow:none;width:100%;max-width:none;margin:0;padding:0;min-height:270mm}.inv-top{display:flex !important;visibility:visible !important}.inv-cols{display:grid !important;visibility:visible !important}.inv-table,.tbl-body,.ket-box,.sign-block{display:block !important;visibility:visible !important}.inv-bottom{display:flex !important;visibility:visible !important;margin-top:auto;padding-top:24px}.paper,.tbl-head,.logo-text,.brand-mini-mark{-webkit-print-color-adjust:exact;print-color-adjust:exact}}
@media (max-width:1023px){body[data-tab="preview"] #editorPane{display:none}body[data-tab="editor"] #previewPane{display:none}}