:root {
  --paper: #f1ede4;
  --paper-2: #e8e2d3;
  --ink: #1a1a1a;
  --ink-rgb: 26, 26, 26;
  --ink-soft: #4a4a4a;
  --rule: #2a2a2a;
  --accent: #d63a1f;
  --accent-2: #1f4ed6;
  --grid: rgba(26, 26, 26, 0.07);
  --grid-major: rgba(26, 26, 26, 0.14);
}

html.dark {
  --paper: #141414;
  --paper-2: #242424;
  --ink: #f1ede4;
  --ink-rgb: 241, 237, 228;
  --ink-soft: #a8a298;
  --rule: #555;
  --grid: rgba(241, 237, 228, 0.04);
  --grid-major: rgba(241, 237, 228, 0.09);
}

/* keep autofilled inputs visually consistent with the rest of the form */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
  -webkit-text-fill-color: var(--ink) !important;
  -webkit-box-shadow: 0 0 0 1000px var(--paper) inset !important;
  box-shadow: 0 0 0 1000px var(--paper) inset !important;
  caret-color: var(--ink) !important;
  transition: background-color 600000s ease-in-out 0s;
}

/* slightly softer borders in dark mode so cream borders don't shout */
html.dark .field input[type="number"],
html.dark .field input[type="text"],
html.dark .field input[type="email"],
html.dark .field input[type="password"],
html.dark .field select,
html.dark .transom-row input,
html.dark .transom-row select {
  border-color: var(--ink-soft);
}
html.dark .field input::placeholder,
html.dark .transom-row input::placeholder {
  color: rgba(168, 162, 152, 0.45);
}

/* dropdown chevron — flip to light stroke in dark mode */
html.dark .field select,
html.dark .transom-row select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%23f1ede4' stroke-width='2' fill='none'/></svg>");
}

.theme-toggle {
  align-self: center;
  margin-left: auto;
  width: 36px;
  height: 36px;
  border: 1.5px solid var(--paper);
  background: transparent;
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}
.theme-toggle:hover {
  background: var(--paper);
  color: var(--ink);
}
.theme-toggle::before { content: "☾"; }
html.dark .theme-toggle::before { content: "☀"; }
@media print {
  .theme-toggle { display: none; }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  line-height: 1.45;
  min-height: 100vh;
}

body {
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px);
  background-size: 10px 10px, 10px 10px, 50px 50px, 50px 50px;
}

.wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 28px 80px;
}

/* ---------- TOP NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--ink);
  color: var(--paper);
  padding: 0 28px;
  display: flex;
  align-items: stretch;
  height: 60px;
  border-bottom: 3px solid var(--accent);
}
.nav-brand {
  font-family: 'Archivo', sans-serif;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--paper);
  text-decoration: none;
  display: flex;
  align-items: center;
  margin-right: 36px;
}
.nav-brand .slash { color: var(--accent); }
.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  align-items: stretch;
}
.nav-links li { display: flex; }
.nav-links a {
  display: flex;
  align-items: center;
  padding: 0 18px;
  color: var(--paper);
  text-decoration: none;
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  border-bottom: 3px solid transparent;
  margin-bottom: -3px;  /* sit on top of the nav's bottom border when active */
  transition: background 0.15s ease, border-color 0.15s ease;
}
.nav-links a:hover { background: rgba(255, 255, 255, 0.07); }
.nav-links a.active { border-bottom-color: var(--accent); }
.nav-links li.right { margin-left: auto; }
@media (max-width: 700px) {
  .nav { padding: 0 14px; height: auto; flex-wrap: wrap; }
  .nav-brand { margin-right: 16px; height: 60px; }
  .nav-links { width: 100%; order: 3; overflow-x: auto; }
  .nav-links a { padding: 14px 12px; font-size: 10px; letter-spacing: 0.12em; }
}
@media print {
  .nav { display: none; }
}

header.top {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 14px;
  margin-bottom: 28px;
}

.meta {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}
.meta .rev { color: var(--accent); font-weight: 700; }

.layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 28px;
}
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
}

/* ---------- INPUT PANEL ---------- */
.panel {
  background: var(--paper-2);
  border: 1.5px solid var(--ink);
  padding: 22px 22px 26px;
  position: relative;
}
.panel::before {
  content: "";
  position: absolute;
  top: -1.5px; left: -1.5px; right: -1.5px;
  height: 6px;
  background: var(--ink);
}

.panel h2 {
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.18em;
  margin-bottom: 18px;
  padding-top: 6px;
}

.field {
  margin-bottom: 16px;
}
.field label {
  display: block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  margin-bottom: 6px;
  font-weight: 500;
}
.field input[type="number"],
.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field select {
  width: 100%;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  padding: 10px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%231a1a1a' stroke-width='2' fill='none'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}
.field input:focus,
.field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.transom-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
}
.transom-list:empty { margin-bottom: 0; }
.transom-row {
  display: grid;
  grid-template-columns: 1fr 1fr 32px;
  gap: 6px;
}
.transom-row input,
.transom-row select {
  width: 100%;
  border: 1.5px solid var(--ink);
  background: var(--paper);
  padding: 8px 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--ink);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
}
.transom-row select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%231a1a1a' stroke-width='2' fill='none'/></svg>");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 26px;
  cursor: pointer;
}
.transom-row input:focus,
.transom-row select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}
.transom-remove {
  border: 1.5px solid var(--ink);
  background: var(--paper);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  font-weight: 700;
  color: var(--ink);
}
.transom-remove:hover {
  background: var(--accent);
  color: var(--paper);
  border-color: var(--accent);
}
.btn-add {
  width: 100%;
  border: 1.5px dashed var(--ink);
  background: transparent;
  padding: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
}
.btn-add:hover {
  background: var(--ink);
  color: var(--paper);
}

details.advanced {
  margin-top: 18px;
  border-top: 1px dashed var(--ink);
  padding-top: 14px;
}
details.advanced summary {
  cursor: pointer;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--ink-soft);
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
details.advanced summary::-webkit-details-marker { display: none; }
details.advanced summary::before {
  content: "+";
  font-size: 16px;
  color: var(--accent);
  font-weight: 800;
  line-height: 1;
}
details.advanced[open] summary::before { content: "−"; }

.ded-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 10px;
  align-items: center;
}
.ded-grid label {
  font-size: 11px;
  color: var(--ink-soft);
}
.ded-grid input {
  width: 80px;
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 4px 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  text-align: right;
}

/* admin page section headers + save toast */
.ded-section { margin-top: 22px; }
.ded-section:first-of-type { margin-top: 6px; }
.ded-h3 {
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--ink);
}
.admin-intro {
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.55;
  margin-bottom: 18px;
}
.save-status {
  margin-top: 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-align: right;
  opacity: 0;
  transition: opacity 0.3s ease;
  min-height: 14px;
}
.save-status.show { opacity: 1; }
.admin-wrap { max-width: 560px; margin: 0 auto; }
.add-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.add-row .btn { flex: 0 0 auto; padding: 0 16px; }

.actions {
  margin-top: 22px;
  display: flex;
  gap: 8px;
}
.btn {
  flex: 1;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 12px;
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn.secondary { background: var(--paper); color: var(--ink); }
.btn.secondary:hover { background: var(--ink); color: var(--paper); }

.btn-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.btn-group button {
  flex: 1 1 0;
  min-width: 36px;
  border: 1.5px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  padding: 10px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.12s ease;
}
.btn-group button:hover { background: var(--accent); color: var(--paper); border-color: var(--accent); }
.btn-group button.active { background: var(--ink); color: var(--paper); }

/* ---------- OUTPUT ---------- */
.output {
  display: grid;
  grid-template-rows: auto auto auto;
  gap: 24px;
}

.preview {
  background: var(--paper-2);
  border: 1.5px solid var(--ink);
  padding: 24px;
  position: relative;
}
.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--ink);
  padding-bottom: 10px;
}
.preview-head h2 {
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.18em;
}
.preview-head .scale {
  font-size: 10px;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.drawing {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
  padding: 10px;
}
.drawing svg {
  max-width: 100%;
  height: auto;
  max-height: 480px;
}

/* ---------- TABLES ---------- */
.sheet {
  background: var(--paper-2);
  border: 1.5px solid var(--ink);
  padding: 22px 24px 26px;
}
.sheet h2 {
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sheet h2 .badge {
  font-size: 10px;
  background: var(--accent);
  color: var(--paper);
  padding: 3px 8px;
  letter-spacing: 0.1em;
  font-weight: 700;
}
.sheet h2 .badge.glass { background: var(--accent-2); }
.sheet h2 .badge.reveal { background: var(--ink); color: var(--paper); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
thead th {
  text-align: left;
  font-family: 'Archivo', sans-serif;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--ink-soft);
  padding: 8px 10px;
  border-bottom: 1.5px solid var(--ink);
  white-space: nowrap;
}
tbody td {
  padding: 10px;
  border-bottom: 1px dashed rgba(26,26,26,0.25);
  vertical-align: top;
}
tbody tr:last-child td { border-bottom: none; }
tbody td.num { font-variant-numeric: tabular-nums; font-weight: 500; }
tbody td.code {
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-align: center;
  width: 40px;
  padding: 6px;
}
tbody td.qty {
  font-weight: 700;
  color: var(--accent);
}

.footer-stamp {
  margin-top: 32px;
  padding-top: 14px;
  border-top: 1px solid var(--ink);
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* Print — fit a single cut sheet onto one A4 page */
@page {
  size: A4 portrait;
  margin: 8mm;
}
@media print {
  html, body {
    background: white !important;
    background-image: none !important;
    color: black !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    font-size: 11px;
    line-height: 1.3;
  }
  .wrap { max-width: none; padding: 0; }
  .top { margin-bottom: 6px; }
  .top .meta { font-size: 10px; }
  .panel, .actions, .nav { display: none !important; }
  .layout { display: block; grid-template-columns: 1fr; gap: 0; }
  .output { display: block; }
  .preview, .sheet, .footer-stamp {
    border-color: black !important;
    background: white !important;
    page-break-inside: avoid;
    break-inside: avoid;
    margin: 0 0 6px;
  }
  .preview-head { padding: 4px 10px; }
  .preview-head h2 { font-size: 12px; }
  .drawing {
    padding: 8px;
    max-height: 110mm;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .drawing svg {
    max-height: 100mm;
    max-width: 100%;
    width: auto;
    height: auto;
  }
  .sheet { padding: 8px 10px; }
  .sheet h2 { font-size: 12px; margin-bottom: 5px; }
  .badge { font-size: 9px; padding: 1px 6px; }
  table { font-size: 11px; }
  th { font-size: 10px; padding: 3px 6px !important; }
  td { padding: 3px 6px !important; }
  .footer-stamp { padding: 5px 10px; font-size: 9px; }
  .scale { font-size: 9px; }
}

.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-soft);
  font-style: italic;
}