/* Pos Laju Shipping Calculator — "shipping ledger" aesthetic */

:root {
  --paper:        #f6f1e6;
  --paper-2:      #efe7d4;
  --paper-3:      #e7dcc2;
  --ink:          #1a1612;
  --ink-soft:     #4a4036;
  --ink-faint:    #8a7d6a;
  --rule:         #d6c9a8;
  --rule-strong:  #2c241c;
  --stamp:        #b3261e;     /* postal-stamp red */
  --stamp-deep:   #7e1a14;
  --stamp-tint:   rgba(179, 38, 30, 0.07);
  --ok:           #2f5d3a;
  --wm:           #1f6f4a;     /* WM accent — deep green */
  --wm-deep:      #144a31;
  --wm-tint:      rgba(31, 111, 74, 0.10);
  --em:           #b3261e;     /* EM accent — postal red */
  --em-deep:      #7e1a14;
  --em-tint:      rgba(179, 38, 30, 0.10);
  --shadow-1:     0 1px 0 rgba(26, 22, 18, 0.06), 0 12px 32px -16px rgba(26, 22, 18, 0.18);

  --font-sans:    ui-sans-serif, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  --font-mono:    ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font-serif:   ui-serif, "Iowan Old Style", "Apple Garamond", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background-color: var(--paper);
  /* paper grain — subtle SVG noise */
  background-image:
    radial-gradient(at 12% 0%, var(--paper-2) 0%, transparent 50%),
    radial-gradient(at 100% 8%, var(--paper-3) 0%, transparent 55%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.10  0 0 0 0 0.08  0 0 0 0 0.05  0 0 0 0.045 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-attachment: fixed;
  background-size: auto, auto, 220px 220px;
  min-height: 100vh;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 56px 32px 96px;
  position: relative;
}

main::before {
  /* faint stamped corner mark */
  content: "MY · POS LAJU";
  position: absolute;
  top: 24px;
  right: 32px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-faint);
  border: 1px dashed var(--rule);
  padding: 4px 10px;
  border-radius: 2px;
  transform: rotate(2deg);
  pointer-events: none;
  user-select: none;
}

h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--ink);
}

h1::after {
  /* small underline rule */
  content: "";
  display: block;
  width: 64px;
  height: 2px;
  margin-top: 14px;
  background: var(--rule-strong);
}

main > p:first-of-type {
  margin: 18px 0 36px;
  font-size: 1.0625rem;
  color: var(--ink-soft);
  max-width: 64ch;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--stamp);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}
a:hover { color: var(--stamp-deep); }

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 2px 6px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 2px;
}

/* ---------- Pricing rules ---------- */

#rules {
  margin: 0 0 28px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  box-shadow: var(--shadow-1);
}

#rules > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  position: relative;
  user-select: none;
}
#rules > summary::-webkit-details-marker { display: none; }
#rules > summary::before {
  content: "▸";
  display: inline-block;
  width: 1em;
  margin-right: 8px;
  color: var(--stamp);
  transition: transform 0.18s ease;
}
#rules[open] > summary::before { transform: rotate(90deg); }

.rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule);
}

#rules fieldset {
  border: none;
  border-right: 1px dashed var(--rule);
  margin: 0;
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
#rules fieldset:last-child { border-right: none; }

#rules legend {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 8px;
  width: 100%;
}

#rules label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--ink-soft);
  font-family: var(--font-sans);
}

#rules input[type="number"] {
  width: 90px;
  padding: 6px 8px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
#rules input[type="number"]:focus {
  outline: none;
  border-color: var(--stamp);
  background: var(--paper);
}

#rules #resetRules {
  margin-top: auto;
  align-self: flex-start;
  appearance: none;
  border: 1px dashed var(--rule-strong);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: 2px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}
#rules #resetRules:hover {
  color: var(--stamp-deep);
  border-color: var(--stamp);
  background: var(--stamp-tint);
}

@media (max-width: 720px) {
  #rules fieldset {
    border-right: none;
    border-bottom: 1px dashed var(--rule);
    padding: 16px 18px;
  }
  #rules fieldset:last-child { border-bottom: none; }
}

/* ---------- Quick estimate ---------- */

#quick {
  margin: 0 0 28px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  box-shadow: var(--shadow-1);
}

#quick > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  user-select: none;
}
#quick > summary::-webkit-details-marker { display: none; }
#quick > summary::before {
  content: "▸";
  display: inline-block;
  width: 1em;
  margin-right: 8px;
  color: var(--stamp);
  transition: transform 0.18s ease;
}
#quick[open] > summary::before { transform: rotate(90deg); }

.quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--rule);
}

#quick fieldset {
  border: none;
  margin: 0;
  padding: 18px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.quick-inputs { border-right: 1px dashed var(--rule); }

#quick legend {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 8px;
  width: 100%;
}

#quick label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

#quick input[type="text"],
#quick input[type="number"] {
  padding: 6px 8px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
  width: 130px;
}
#quick input[type="text"] { text-align: left; }
#quick input:focus {
  outline: none;
  border-color: var(--stamp);
  background: var(--paper);
}

/* segmented WM/EM toggle */
.seg {
  display: inline-flex;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  overflow: hidden;
}
.seg-opt {
  position: relative;
  padding: 0;
  margin: 0;
  cursor: pointer;
}
.seg-opt input { position: absolute; opacity: 0; pointer-events: none; }
.seg-opt span {
  display: inline-block;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  background: var(--paper-2);
  color: var(--ink-soft);
  border-right: 1px solid var(--rule);
  transition: background-color 0.12s ease, color 0.12s ease;
}
.seg-opt:last-child span { border-right: none; }
.seg-opt:has(input[value="WM"]:checked) span { background: var(--wm); color: var(--paper); border-color: var(--wm); }
.seg-opt:has(input[value="EM"]:checked) span { background: var(--em); color: var(--paper); border-color: var(--em); }
.seg-opt:hover span { color: var(--ink); }
.seg-opt:has(input:checked):hover span { color: var(--paper); }

/* output dl */
.quick-output dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 16px;
  align-items: baseline;
}
.quick-output dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.quick-output dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.quick-output dd.qTotalRow {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--stamp-deep);
  padding-top: 6px;
  border-top: 2px double var(--rule-strong);
  margin-top: 4px;
}
.quick-output dl > dt:has(+ .qTotalRow) {
  padding-top: 6px;
  border-top: 2px double var(--rule-strong);
  margin-top: 4px;
}
#qError {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--stamp-deep);
  min-height: 1em;
}

@media (max-width: 720px) {
  .quick-grid { grid-template-columns: 1fr; }
  .quick-inputs {
    border-right: none;
    border-bottom: 1px dashed var(--rule);
  }
}

/* ---------- Dropzone ---------- */

#dropzone {
  position: relative;
  border: 2px dashed var(--rule-strong);
  border-radius: 4px;
  padding: 56px 24px;
  text-align: center;
  background:
    repeating-linear-gradient(
      45deg,
      transparent 0 18px,
      var(--paper-2) 18px 19px
    ),
    var(--paper);
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
  cursor: pointer;
  outline: none;
}

#dropzone p { margin: 0; }
#dropzone p:first-child {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: -0.005em;
  margin-bottom: 8px;
  color: var(--ink);
}
#dropzone p:last-child {
  font-size: 0.95rem;
  color: var(--ink-soft);
}

#dropzone::before,
#dropzone::after {
  /* stamped "DROP HERE" tickmarks at top-left and bottom-right corners */
  content: "✕";
  position: absolute;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-faint);
}
#dropzone::before { top: 8px; left: 12px; }
#dropzone::after  { bottom: 8px; right: 12px; }

#dropzone:hover,
#dropzone:focus-visible {
  border-color: var(--stamp);
  background:
    repeating-linear-gradient(
      45deg,
      transparent 0 18px,
      var(--stamp-tint) 18px 19px
    ),
    var(--paper);
}

#dropzone.drag {
  border-color: var(--stamp);
  background-color: var(--stamp-tint);
  background-image: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.link {
  cursor: pointer;
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.link:hover { color: var(--stamp-deep); border-color: var(--stamp); }

/* ---------- Results ---------- */

#results {
  margin-top: 48px;
  animation: fadeUp 0.36s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

#summary {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 18px;
}

#summary::before {
  content: "▸ ";
  color: var(--stamp);
}

/* table wrap — keeps the table within main's width, scrolls horizontally if content is wider */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border-radius: 4px;
  box-shadow: var(--shadow-1);
}

/* table */
#resultsTable {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
}

#resultsTable thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 12px 10px;
  text-align: left;
  border-bottom: 1px solid var(--rule-strong);
  white-space: nowrap;
}

#resultsTable tbody td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  font-size: 0.9375rem;
}

/* numeric columns: 6..9 right-aligned, monospaced */
#resultsTable tbody td:nth-child(n+6),
#resultsTable thead th:nth-child(n+6) {
  text-align: right;
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
}

/* qty + weight columns also tabular */
#resultsTable tbody td:nth-child(3),
#resultsTable tbody td:nth-child(4) {
  font-family: var(--font-mono);
  text-align: right;
  color: var(--ink-soft);
}

#resultsTable tbody tr:nth-child(odd) td {
  background: var(--paper-2);
}

#resultsTable tbody tr:hover td {
  background: var(--stamp-tint);
}

/* address column: collapsed by default, expandable on click */
#resultsTable thead th:first-child,
#resultsTable tbody td:first-child {
  min-width: 180px;
  max-width: 220px;
}
#resultsTable tbody td:first-child {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--ink);
}
#resultsTable tbody td.cell-truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  position: relative;
}
#resultsTable tbody td.cell-truncate:hover {
  text-decoration: underline;
  text-decoration-color: var(--rule-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
#resultsTable tbody td.cell-truncate.expanded {
  white-space: normal;
  overflow: visible;
  overflow-wrap: anywhere;
  text-decoration: none;
}

/* region cell rendered as a rubber-stamp badge — WM green, EM red */
#resultsTable tbody td:nth-child(5) {
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}
#resultsTable tbody td[data-region="WM"] { color: var(--wm); }
#resultsTable tbody td[data-region="EM"] { color: var(--em); }

#resultsTable tbody td:nth-child(5)::before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  margin-right: 6px;
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
  opacity: 0.85;
}

/* error rows (parse failure) */
#resultsTable tbody tr.err td {
  background: var(--stamp-tint);
  color: var(--stamp-deep);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* tfoot — grand total */
#resultsTable tfoot tr th {
  padding: 18px 14px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  background: var(--paper-3);
  border-top: 3px double var(--rule-strong);
  border-bottom: none;
}

#resultsTable tfoot tr th:last-child {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  text-align: right;
  color: var(--stamp-deep);
  letter-spacing: 0.01em;
}

/* download button */
#downloadBtn {
  margin-top: 28px;
  appearance: none;
  border: 1.5px solid var(--rule-strong);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 14px 24px;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 3px 3px 0 var(--rule-strong);
}

#downloadBtn:hover {
  background: var(--stamp);
  border-color: var(--stamp);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 var(--rule-strong);
}

#downloadBtn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--rule-strong);
}

#downloadBtn::before {
  content: "↓ ";
  letter-spacing: normal;
}

/* error message under main flow */
#error {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--stamp-deep);
}
#error:not(:empty) {
  padding: 12px 16px;
  border: 1px dashed var(--stamp);
  background: var(--stamp-tint);
  border-radius: 2px;
}

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
  main { padding: 40px 20px 72px; }
  main::before { display: none; }
  #dropzone { padding: 40px 16px; }
  #dropzone p:first-child { font-size: 1.05rem; }

  /* Card layout: each tbody row becomes a 2-col label/value grid */
  .table-wrap {
    overflow: visible;
    box-shadow: none;
  }
  #resultsTable {
    border: none;
    box-shadow: none;
    background: transparent;
    border-radius: 0;
  }
  #resultsTable thead { display: none; }
  #resultsTable tbody { display: block; }

  #resultsTable tbody tr {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 6px 16px;
    padding: 16px 18px;
    margin: 0 0 12px;
    background: var(--paper-2);
    border: 1px solid var(--rule);
    border-radius: 4px;
    box-shadow: var(--shadow-1);
  }
  #resultsTable tbody tr:nth-child(odd) { background: var(--paper); }

  #resultsTable tbody td {
    display: contents;
    border: none;
    background: transparent !important;
    padding: 0;
  }
  #resultsTable tbody td::before {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-faint);
    align-self: center;
  }
  #resultsTable tbody td:nth-child(1)::before { content: "Address"; }
  #resultsTable tbody td:nth-child(2)::before { content: "Size"; }
  #resultsTable tbody td:nth-child(3)::before { content: "Weight"; }
  #resultsTable tbody td:nth-child(4)::before { content: "Qty"; }
  #resultsTable tbody td:nth-child(5)::before { content: "Region"; }
  #resultsTable tbody td:nth-child(6)::before { content: "Vol Wt"; }
  #resultsTable tbody td:nth-child(7)::before { content: "Chargeable"; }
  #resultsTable tbody td:nth-child(8)::before { content: "Cost / Carton"; }
  #resultsTable tbody td:nth-child(9)::before { content: "Row Total (RM)"; color: var(--stamp); }

  /* values aligned left (against the labels) */
  #resultsTable tbody td:first-child {
    max-width: none;
    word-break: break-word;
  }
  /* disable desktop-only truncation in card layout */
  #resultsTable tbody td.cell-truncate {
    white-space: normal;
    overflow: visible;
    cursor: default;
    text-decoration: none !important;
  }
  #resultsTable tbody td:nth-child(n+6),
  #resultsTable tbody td:nth-child(3),
  #resultsTable tbody td:nth-child(4) {
    text-align: left;
  }
  #resultsTable tbody td:nth-child(5)::before {
    /* Override the desktop dot pseudo with the label */
    display: inline;
    width: auto;
    height: auto;
    background: transparent;
    border-radius: 0;
    opacity: 1;
    margin-right: 0;
    content: "Region";
  }
  #resultsTable tbody td:nth-child(9) {
    font-family: var(--font-mono);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--stamp-deep);
  }

  /* Error rows in card mode: full-width single block */
  #resultsTable tbody tr.err {
    display: block;
    color: var(--stamp-deep);
  }

  /* Grand-total tfoot stacks */
  #resultsTable tfoot { display: block; }
  #resultsTable tfoot tr {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 18px 18px;
    background: var(--paper-3);
    border: 1px solid var(--rule);
    border-top: 3px double var(--rule-strong);
    border-radius: 4px;
    margin-top: 4px;
  }
  #resultsTable tfoot tr th {
    border: none;
    background: transparent;
    padding: 0;
    text-align: left !important;
  }
  #resultsTable tfoot tr th:last-child { font-size: 1.25rem; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.65rem; }
}

/* respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}