:root {
  --bg: #14110c;
  --bg-2: #1b1711;
  --panel: #221c14;
  --panel-2: #2a2319;
  --line: #3e3426;
  --line-2: #53452f;
  --brass: #d4a44a;
  --brass-2: #f0d089;
  --copper: #c47a42;
  --ink: #f4efe4;
  --mute: #a8987c;
  --dim: #7a6d58;
  --ok: #c5d4a3;
  --danger: #d47a62;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --font: "Sarabun", "Segoe UI", sans-serif;
  --display: "Chakra Petch", "Sarabun", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #2a2114 0%, var(--bg) 55%);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.45;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

header, main, section, footer { position: relative; z-index: 1; }

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  padding: 28px 32px 12px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; gap: 16px; align-items: center; }
.mark { width: 48px; height: 48px; color: var(--brass); flex: none; }
h1 {
  font-family: var(--display);
  font-size: 1.55rem;
  margin: 0;
  letter-spacing: 0.02em;
  font-weight: 700;
}
.brand p { margin: 2px 0 0; color: var(--mute); font-size: 0.92rem; }
.app-nav { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.app-nav a {
  color: var(--mute);
  text-decoration: none;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.88rem;
}
.app-nav a.active, .app-nav a:hover {
  border-color: var(--brass);
  color: var(--brass-2);
  background: rgba(212, 164, 74, 0.08);
}
.top-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.unit-switch {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--mute);
}
select, input, button {
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
}
select, input[type="text"], input[type="search"], input[type="number"], input[type="password"] {
  background: var(--bg);
  border: 1px solid var(--line-2);
  border-radius: 8px;
  padding: 8px 10px;
  outline: none;
}
select:focus, input:focus { border-color: var(--brass); box-shadow: 0 0 0 3px rgba(212, 164, 74, 0.18); }

.parse-bar { padding: 18px 32px 8px; }
.parse-bar > label { display: block; color: var(--mute); font-size: 0.85rem; margin-bottom: 6px; }
.parse-row { display: flex; gap: 10px; }
.parse-row input { flex: 1; font-family: var(--mono); font-size: 0.95rem; }
.hint { color: var(--dim); font-size: 0.82rem; margin: 6px 0 0; }
.hint.ok { color: var(--ok); }
.hint.err { color: var(--danger); }

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 18px;
  padding: 16px 32px;
}

.panel {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.inputs { padding: 8px 18px 18px; }
.result { padding: 22px 24px 20px; display: flex; flex-direction: column; }
.table-wrap { margin: 0 32px 24px; padding: 16px 18px 8px; }

.block { padding: 12px 0 8px; border-bottom: 1px dashed var(--line); }
.block:last-child { border-bottom: 0; }
.block-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
h2 {
  font-family: var(--display);
  font-size: 1.05rem;
  margin: 0;
  font-weight: 600;
}
.badge {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--brass-2);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 3px 10px;
}

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.chip {
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 5px 11px;
  color: var(--mute);
  cursor: pointer;
  font-size: 0.85rem;
}
.chip.active, .chip:hover { border-color: var(--brass); color: var(--brass-2); background: rgba(212, 164, 74, 0.08); }

#matSearch { width: 100%; margin-bottom: 8px; }
.mat-list {
  max-height: 168px;
  overflow: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding-right: 4px;
}
.mat-item {
  text-align: left;
  background: var(--panel-2);
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 7px 9px;
  cursor: pointer;
  color: var(--ink);
}
.mat-item small { display: block; color: var(--dim); font-size: 0.75rem; }
.mat-item.active { border-color: var(--brass); background: rgba(212, 164, 74, 0.12); }
.custom-density { display: flex; flex-direction: column; gap: 4px; margin-top: 10px; font-size: 0.85rem; color: var(--mute); }

.shape-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}
.shape-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--panel-2);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 8px 4px 7px;
  cursor: pointer;
  color: var(--mute);
  min-height: 74px;
}
.shape-btn svg { width: 34px; height: 34px; }
.shape-btn span { font-size: 0.72rem; text-align: center; line-height: 1.2; }
.shape-btn.active { border-color: var(--brass); color: var(--brass-2); background: rgba(212, 164, 74, 0.12); }

.shape-preview {
  margin-top: 10px;
  height: 92px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #100e0a;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--brass);
}
.shape-preview svg { width: 86px; height: 72px; }

.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.field { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--mute); }
.field input { font-family: var(--mono); }
.qty-row { margin-top: 12px; }
.qty-row label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--mute); max-width: 220px; }

.result-kicker { margin: 0; color: var(--mute); font-size: 0.92rem; }
.scale {
  text-align: center;
  padding: 18px 8px 8px;
  border-bottom: 1px solid var(--line);
}
.scale-label { color: var(--dim); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; }
.scale-num {
  font-family: var(--mono);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 600;
  color: var(--brass-2);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.scale-unit { color: var(--mute); }

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin: 16px 0 0;
}
.stats div {
  background: var(--panel-2);
  border-radius: 10px;
  padding: 10px 12px;
}
.stats dt { color: var(--dim); font-size: 0.75rem; }
.stats dd { margin: 2px 0 0; font-family: var(--mono); font-size: 0.98rem; }

.total-box {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 14px;
  border: 1px solid var(--brass);
  border-radius: 10px;
  background: rgba(212, 164, 74, 0.08);
}
.total-box strong { font-family: var(--mono); font-size: 1.25rem; color: var(--brass-2); }

.formula {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
  margin: 12px 0 0;
  word-break: break-word;
}

.result-actions, .table-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.result-actions { margin-top: auto; padding-top: 16px; }

.btn {
  border: 0;
  border-radius: 9px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
}
.btn.brass { background: var(--brass); color: #1a140c; }
.btn.brass:hover { background: var(--brass-2); }
.btn.ghost {
  background: transparent;
  border: 1px solid var(--line-2);
  color: var(--ink);
}
.btn.ghost:hover { border-color: var(--brass); }
.btn.danger { color: var(--danger); }

.table-scroll { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 8px 8px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--mute); font-weight: 600; font-size: 0.78rem; }
td:nth-child(7), td:nth-child(8), td:nth-child(9), #grandTotal { font-family: var(--mono); }
tfoot td { font-weight: 700; }
.empty td { color: var(--dim); text-align: center; padding: 22px; }
.del {
  background: none;
  border: 0;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.85rem;
}

.std-hint { margin: 0 0 12px; }
.std-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 8px 10px;
  margin-bottom: 14px;
}
.std-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--mute);
}
.std-form .wide { grid-column: span 2; }
.std-form-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
#stdSearch { min-width: 220px; }
.badge.bad { color: var(--danger); border-color: var(--danger); }

table.sheet { border-collapse: collapse; font-size: 0.82rem; background: #fff; color: #111; }
table.sheet th {
  background: #ffe34d;
  color: #111;
  font-weight: 700;
  border: 1px solid #c9b227;
  padding: 7px 8px;
  font-size: 0.78rem;
}
table.sheet td {
  background: #fff;
  color: #111;
  border: 1px solid #d4c36a;
  padding: 6px 8px;
  vertical-align: middle;
}
table.sheet td.computed {
  font-family: var(--mono);
  font-weight: 700;
  background: #fffbe6;
}
table.sheet tbody tr:hover td { background: #fff6c2; }
table.sheet tbody tr:hover td.computed { background: #ffef8a; }
table.sheet td[contenteditable] { outline: none; min-width: 64px; }
table.sheet td[contenteditable]:focus { box-shadow: inset 0 0 0 2px #d4a44a; }
.ghost-mini {
  background: transparent;
  border: 1px solid #c9b227;
  border-radius: 6px;
  padding: 2px 8px;
  cursor: pointer;
  font-size: 0.78rem;
  color: #111;
}

@media (max-width: 960px) {
  .std-form { grid-template-columns: 1fr 1fr; }
  .std-form .wide { grid-column: span 2; }
}

@media (max-width: 960px) {
  .layout, .top, .parse-bar, .table-wrap, .foot { padding-left: 16px; padding-right: 16px; }
  .table-wrap { margin-left: 16px; margin-right: 16px; }
  .layout { grid-template-columns: 1fr; }
  .shape-grid { grid-template-columns: repeat(3, 1fr); }
  .mat-list { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
}

.nav-user {
  color: var(--brass-2);
  font-size: 0.86rem;
  padding: 6px 4px;
}
.nav-logout {
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--mute);
  cursor: pointer;
}
.nav-logout:hover { border-color: var(--danger); color: var(--danger); }
.idle-warn {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  background: #5a2e22;
  color: #f4efe4;
  text-align: center;
  padding: 8px 16px;
  font-size: 0.92rem;
}
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card {
  width: min(440px, calc(100% - 32px));
  padding: 28px 26px;
}
.login-card form { display: grid; gap: 12px; margin-top: 16px; }
.login-card label { display: grid; gap: 6px; color: var(--mute); font-size: 0.88rem; }
.login-card .btn { width: 100%; margin-top: 4px; }
.admin-page { margin-top: 18px; }
.admin-page .std-form { margin-bottom: 16px; }

@media print {
  .grain, .parse-bar, .inputs, .result-actions, .table-actions, .top-actions, .foot, .del { display: none !important; }
  body { background: #fff; color: #111; }
  .panel { box-shadow: none; border-color: #ccc; background: #fff; }
  .layout { grid-template-columns: 1fr; }
  .scale-num { color: #111; }
}