:root {
  --ink: #1f2430;
  --muted: #6b7280;
  --line: #d8dce3;
  --accent: #2f6fed;
  --accent-soft: #eaf1ff;
  --bg: #eef1f6;
  --sheet-bg: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Malgun Gothic", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--sheet-bg);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.toolbar-title {
  display: flex;
  align-items: center;
  gap: 14px;
}

.toolbar h1 {
  font-size: 18px;
  margin: 0;
}

.back-link {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

.back-link:hover { color: var(--accent); }

.toolbar-actions button {
  margin-left: 8px;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  font-size: 14px;
}

.toolbar-actions button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.toolbar-actions button:hover { filter: brightness(0.97); }

.sheet {
  max-width: 860px;
  margin: 24px auto 64px;
  background: var(--sheet-bg);
  padding: 40px 48px;
  border-radius: 10px;
  box-shadow: 0 4px 24px rgba(20, 24, 40, 0.08);
}

.sheet-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 3px solid var(--ink);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.doc-title {
  font-size: 28px;
  letter-spacing: 0.4em;
  margin: 0;
}

.doc-date label {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.party {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.party h3 {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--muted);
}

.party label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--muted);
  gap: 4px;
  margin-bottom: 10px;
}

.party label:last-child { margin-bottom: 0; }

.company-name-row {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  margin-bottom: 10px;
}

.company-name-row label.grow {
  flex: 1;
  margin-bottom: 0;
}

.stamp-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stamp-preview {
  width: 56px;
  height: 56px;
  object-fit: contain;
  border: 1px dashed var(--line);
  border-radius: 6px;
  background: #fff;
}

.stamp-upload-btn {
  display: block;
  font-size: 11px;
  color: var(--accent);
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 6px;
  background: #fff;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  margin-bottom: 0 !important;
}

.stamp-upload-btn:hover { background: var(--accent-soft); }

input, textarea {
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fff;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.total-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 14px;
}

.total-banner strong {
  font-size: 20px;
  color: var(--accent);
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

.items-table th, .items-table td {
  border: 1px solid var(--line);
  padding: 8px;
  font-size: 13px;
  text-align: center;
}

.items-table thead th {
  background: #f5f6f9;
  color: var(--muted);
  font-weight: 600;
}

.items-table input {
  width: 100%;
  border: none;
  padding: 4px;
  text-align: center;
}

.items-table .item-name, .items-table .item-desc {
  text-align: left;
}

.items-table input:focus { background: var(--accent-soft); border-radius: 4px; }

.col-no { width: 40px; }
.col-qty { width: 70px; }
.col-price { width: 110px; }
.col-amount { width: 120px; }
.col-del { width: 36px; }

.item-amount { font-variant-numeric: tabular-nums; }

.removeRowBtn {
  border: none;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
}
.removeRowBtn:hover { color: #d64545; }

.summary {
  margin-left: auto;
  width: 280px;
  margin-bottom: 24px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
  color: var(--muted);
}

.summary-row.grand {
  border-top: 2px solid var(--ink);
  margin-top: 4px;
  padding-top: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.deposit {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  margin-bottom: 20px;
}

.deposit-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.deposit-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.deposit-row input {
  width: 100px;
}

.deposit-amount {
  font-size: 14px;
  color: var(--muted);
}

.deposit-amount strong {
  color: var(--accent);
  font-size: 16px;
  margin-left: 6px;
}

.deposit > label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.deposit > label input {
  width: 100%;
}

.notes textarea {
  width: 100%;
  resize: vertical;
}

.notes label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.cta-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.cta-btn:hover { filter: brightness(0.95); }

.site-footer {
  max-width: 860px;
  margin: 0 auto 48px;
  padding: 0 48px;
  display: flex;
  gap: 16px;
  justify-content: center;
  font-size: 12px;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover { color: var(--accent); }

@media (max-width: 700px) {
  .parties { grid-template-columns: 1fr; }
  .sheet { padding: 24px; }
  .summary { width: 100%; }
  .site-footer { padding: 0 24px; }
}

@page {
  size: portrait;
  margin: 12mm;
}

@media print {
  body { background: #fff; }
  .no-print { display: none !important; }
  .sheet {
    box-shadow: none;
    margin: 0;
    max-width: none;
    padding: 0;
  }
  input, textarea {
    border: none;
    padding: 2px;
  }
}