/*
 * BarterRequestViewer — styles.css
 * Styled to match the Michelon Supplies design system
 * michelonsupplies.com
 *
 * Design tokens sourced from site:
 *   Fonts  : Archivo (headings, 700/900) · Questrial (body, 400)
 *   Colors : Navy #0e1b4d · Blue #4770db · Cyan #0ea5e9 · Lavender bg #eff0f5
 *   Shapes : 40px button radius · 18px card radius · rounded everything
 *   Buttons: Gradient #4770db→#3560cc, shadow, lift-on-hover
 */

/* ─── Tokens ────────────────────────────────────────────────────────────────── */
:root {
  /* Brand palette */
  --ms-navy:        #0e1b4d;
  --ms-blue:        #4770db;
  --ms-blue-dark:   #3560cc;
  --ms-blue-deeper: #2a4fa8;
  --ms-cyan:        #0ea5e9;
  --ms-cyan-light:  #e0f2fe;

  /* Backgrounds */
  --ms-bg:          #eff0f5;
  --ms-surface:     #ffffff;
  --ms-surface-alt: #f8f9fc;

  /* Borders */
  --ms-border:      rgba(14, 27, 77, 0.10);
  --ms-border-md:   rgba(14, 27, 77, 0.16);

  /* Text */
  --ms-text:        #111827;
  --ms-text-navy:   #0e1b4d;
  --ms-text-muted:  #6b7280;
  --ms-text-light:  #9ca3af;

  /* Semantic */
  --ms-green:       #10b981;
  --ms-green-bg:    #ecfdf5;
  --ms-red:         #ef4444;
  --ms-red-bg:      #fef2f2;
  --ms-amber:       #d97706;
  --ms-amber-bg:    #fffbeb;

  /* Button gradient */
  --ms-btn-grad: linear-gradient(135deg, var(--ms-blue) 0%, var(--ms-blue-dark) 100%);
  --ms-btn-shadow: 0 4px 14px rgba(71, 112, 219, 0.30);
  --ms-btn-shadow-hover: 0 6px 20px rgba(71, 112, 219, 0.40);

  /* Shape */
  --r-btn:   40px;
  --r-card:  18px;
  --r-input: 10px;
  --r-chip:  999px;
  --r-icon:  50%;
  --r-sm:    6px;

  /* Typography */
  --font-head: 'Archivo', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Questrial', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Roboto Mono', Menlo, Consolas, monospace;

  /* Spacing */
  --gap:  28px;
  --gap-sm: 14px;
}

/* ─── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 15px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background-color: var(--ms-bg);
  color: var(--ms-text);
  font-family: var(--font-body);
  line-height: 1.65;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  margin: 0;
  line-height: 1.25;
}

p { margin: 0; }

a {
  color: var(--ms-blue);
  text-decoration: none;
  transition: color .15s;
}
a:hover { color: var(--ms-blue-dark); text-decoration: underline; }
a:focus-visible {
  outline: 3px solid rgba(71, 112, 219, .35);
  outline-offset: 2px;
  border-radius: 3px;
}

dl, dt, dd { margin: 0; padding: 0; }
pre { margin: 0; white-space: pre-wrap; word-break: break-word; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* ─── Header ─────────────────────────────────────────────────────────────────── */
.app-header {
  background-color: var(--ms-navy);
  padding: 0 var(--gap);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(14, 27, 77, .35);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none !important;
  outline-offset: 4px;
}

.brand-logo:focus-visible {
  outline: 2px solid rgba(255,255,255,.5);
  border-radius: 4px;
}

.brand-logo-image {
  display: block;
  width: auto;
  height: 52px;
  max-width: 260px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: opacity .15s;
}

.brand-logo:hover .brand-logo-image { opacity: .85; }

.header-divider {
  width: 1px;
  height: 28px;
  background-color: rgba(255,255,255,.2);
  flex-shrink: 0;
}

.header-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.app-title {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--r-chip);
  background: linear-gradient(135deg, var(--ms-blue) 0%, var(--ms-cyan) 100%);
  color: #fff;
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-note {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: rgba(255,255,255,.55);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── Layout ─────────────────────────────────────────────────────────────────── */
.app-main {
  max-width: 1100px;
  margin: var(--gap) auto;
  padding: 0 var(--gap);
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* ─── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--ms-surface);
  border-radius: var(--r-card);
  border: 1px solid var(--ms-border);
  box-shadow: 0 2px 12px rgba(14, 27, 77, .07);
  overflow: hidden;
  transition: box-shadow .2s;
}

.card:hover {
  box-shadow: 0 4px 20px rgba(14, 27, 77, .10);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  background: var(--ms-surface-alt);
  border-bottom: 1px solid var(--ms-border);
}

.card-title {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--ms-text-navy);
  flex: 1;
}

.card-body {
  padding: 24px;
}

/* ─── Badges / Chips ──────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--r-chip);
  background: var(--ms-cyan-light);
  color: var(--ms-navy);
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-mono {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .3px;
  background: var(--ms-bg);
  color: var(--ms-text-muted);
  border: 1px solid var(--ms-border-md);
}

/* ─── Alerts ──────────────────────────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--r-card);
  font-size: 13px;
  line-height: 1.6;
  margin-top: var(--gap-sm);
  border-left: 4px solid;
}

.alert[hidden] { display: none; }

.alert-error {
  background: var(--ms-red-bg);
  border-color: var(--ms-red);
  color: #991b1b;
}

.alert-warning {
  background: var(--ms-amber-bg);
  border-color: var(--ms-amber);
  color: #92400e;
}

.alert-success {
  background: var(--ms-green-bg);
  border-color: var(--ms-green);
  color: #065f46;
}

/* ─── Buttons ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 24px;
  height: 46px;
  border: none;
  border-radius: var(--r-btn);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .2px;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none !important;
  transition: transform .15s, box-shadow .15s, background-color .15s, opacity .15s;
}

.btn:focus-visible {
  outline: 3px solid rgba(71, 112, 219, .4);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Primary — blue gradient (matches Michelon CTA style) */
.btn-primary {
  background: var(--ms-btn-grad);
  color: #fff;
  box-shadow: var(--ms-btn-shadow);
}
.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--ms-blue-dark) 0%, var(--ms-blue-deeper) 100%);
  box-shadow: var(--ms-btn-shadow-hover);
  transform: translateY(-2px);
}

/* Secondary */
.btn-secondary {
  background: var(--ms-surface);
  color: var(--ms-blue);
  border: 1.5px solid var(--ms-blue);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--ms-cyan-light);
  transform: translateY(-1px);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--ms-text-muted);
  border: 1.5px solid var(--ms-border-md);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--ms-bg);
  color: var(--ms-text-navy);
}

/* Accept / green */
.btn-accept {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(5, 150, 105, .30);
}
.btn-accept:hover:not(:disabled) {
  background: linear-gradient(135deg, #047857 0%, #065f46 100%);
  box-shadow: 0 6px 20px rgba(5, 150, 105, .40);
  transform: translateY(-2px);
}

/* Reject / red */
.btn-reject {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(239, 68, 68, .30);
}
.btn-reject:hover:not(:disabled) {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 0 6px 20px rgba(239, 68, 68, .40);
  transform: translateY(-2px);
}

/* Counter / blue (matches primary) */
.btn-counter {
  background: var(--ms-btn-grad);
  color: #fff;
  box-shadow: var(--ms-btn-shadow);
}
.btn-counter:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--ms-blue-dark) 0%, var(--ms-blue-deeper) 100%);
  box-shadow: var(--ms-btn-shadow-hover);
  transform: translateY(-2px);
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 12px;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ─── Forms ──────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--gap-sm); }

.form-group label {
  display: block;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  color: var(--ms-text-navy);
  margin-bottom: 8px;
}

textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--ms-border-md);
  border-radius: var(--r-input);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ms-text);
  background: var(--ms-surface-alt);
  resize: vertical;
  transition: border-color .15s, box-shadow .15s;
}

textarea:focus {
  outline: none;
  border-color: var(--ms-blue);
  box-shadow: 0 0 0 3px rgba(71, 112, 219, .18);
  background: var(--ms-surface);
}

textarea::placeholder { color: var(--ms-text-light); }

.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

/* File import */
.file-import-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-label { cursor: pointer; }

.file-name-display {
  font-size: 12px;
  color: var(--ms-text-muted);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Number input */
input[type="number"] {
  padding: 8px 12px;
  border: 1.5px solid var(--ms-border-md);
  border-radius: var(--r-input);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ms-text);
  background: var(--ms-surface);
  transition: border-color .15s, box-shadow .15s;
}

input[type="text"],
input[type="password"] {
  padding: 8px 12px;
  border: 1.5px solid var(--ms-border-md);
  border-radius: var(--r-input);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ms-text);
  background: var(--ms-surface);
  transition: border-color .15s, box-shadow .15s;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus {
  outline: none;
  border-color: var(--ms-blue);
  box-shadow: 0 0 0 3px rgba(71, 112, 219, .18);
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }
input[type="number"] { -moz-appearance: textfield; }

/* ─── Trust-badge row (info grid) ─────────────────────────────────────────────── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: var(--gap-sm);
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ms-surface-alt);
  border: 1px solid var(--ms-border);
  border-radius: var(--r-card);
  transition: border-color .15s;
}

.info-item:hover { border-color: var(--ms-blue); }

.info-item.span-full { grid-column: 1 / -1; }

.info-label {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--ms-blue);
}

.info-value {
  font-size: 13px;
  color: var(--ms-text);
  word-break: break-word;
  line-height: 1.5;
}

.info-value.mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

.info-value.note-text {
  font-style: italic;
  color: var(--ms-text-muted);
  white-space: pre-wrap;
}

/* ─── Item Cards ──────────────────────────────────────────────────────────────── */
#items-list {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}

.item-card {
  border: 1.5px solid var(--ms-border);
  border-radius: var(--r-card);
  padding: var(--gap-sm);
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: var(--gap-sm);
  background: var(--ms-surface-alt);
  transition: border-color .2s, box-shadow .2s;
}

.item-card:hover {
  border-color: var(--ms-blue);
  box-shadow: 0 4px 16px rgba(71, 112, 219, .12);
}

/* Image */
.item-thumb {
  width: 88px;
  height: 88px;
  border-radius: var(--r-sm);
  object-fit: cover;
  border: 1px solid var(--ms-border);
  display: block;
}

.item-thumb-placeholder {
  width: 88px;
  height: 88px;
  border-radius: var(--r-sm);
  border: 1.5px dashed var(--ms-border-md);
  background: var(--ms-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-family: var(--font-head);
  font-weight: 600;
  color: var(--ms-text-light);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* Item body */
.item-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-title-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex-wrap: wrap;
}

.item-title {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--ms-text-navy);
  margin: 0;
  word-break: break-word;
}

.item-title a { color: var(--ms-text-navy); }
.item-title a:hover { color: var(--ms-blue); text-decoration: underline; }

.item-external-link {
  font-size: 11px;
  color: var(--ms-blue);
  font-family: var(--font-head);
  font-weight: 600;
  white-space: nowrap;
}

.item-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

/* Michelon-style chips: small rounded tags */
.meta-chip {
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--r-chip);
  background: var(--ms-cyan-light);
  color: var(--ms-navy);
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .2px;
}

/* Price cells */
.item-prices {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
  margin-top: 4px;
}

.price-cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  background: var(--ms-surface);
  border: 1px solid var(--ms-border);
  border-radius: var(--r-sm);
}

.price-cell-label {
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .7px;
  color: var(--ms-text-muted);
}

.price-cell-value {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--ms-text-navy);
}

.price-cell-value.is-original {
  font-size: 13px;
  font-weight: 500;
  color: var(--ms-text-muted);
  text-decoration: line-through;
}

.price-cell-value.is-suggested {
  color: var(--ms-green);
}

.price-cell-value.is-missing {
  font-size: 12px;
  font-weight: 400;
  color: var(--ms-text-light);
}

/* ─── Totals Grid ─────────────────────────────────────────────────────────────── */
.totals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  gap: var(--gap-sm);
}

/* Each total: icon-bubble aesthetic (like Michelon's trust badges) */
.total-cell {
  padding: 16px 18px;
  background: var(--ms-surface-alt);
  border: 1.5px solid var(--ms-border);
  border-radius: var(--r-card);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color .15s;
}

.total-cell:hover { border-color: var(--ms-blue); }

.total-cell-label {
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--ms-text-muted);
}

.total-cell-value {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 900;
  color: var(--ms-text-navy);
  word-break: break-all;
  line-height: 1.15;
}

.total-cell-value.is-offer    { color: var(--ms-green); }
.total-cell-value.is-discount { color: var(--ms-red); }
.total-cell-value.is-mono     { font-size: 16px; font-family: var(--font-mono); font-weight: 700; }

/* ─── Action Section ──────────────────────────────────────────────────────────── */
.action-trigger-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
  margin-bottom: var(--gap);
}

.action-trigger-row .btn {
  padding: 0 32px;
  height: 52px;
  font-size: 14px;
}

/* Action Panel */
.action-panel {
  border-top: 1px solid var(--ms-border);
  padding-top: var(--gap);
}

.action-panel[hidden] { display: none; }

/* Panel title row with left-accent bar */
.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--ms-text-navy);
  margin-bottom: 8px;
}

.panel-title-icon {
  width: 26px;
  height: 26px;
  border-radius: var(--r-icon);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
  flex-shrink: 0;
}

.accept-icon  { background: var(--ms-green-bg);   color: var(--ms-green); }
.reject-icon  { background: var(--ms-red-bg);     color: var(--ms-red); }
.counter-icon { background: var(--ms-cyan-light); color: var(--ms-blue); }

.panel-description {
  font-size: 13px;
  color: var(--ms-text-muted);
  margin-bottom: var(--gap-sm);
  line-height: 1.6;
}

/* Instructions block */
.instructions-block {
  background: var(--ms-surface-alt);
  border: 1.5px solid var(--ms-border-md);
  border-radius: var(--r-card);
  padding: 20px 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  color: var(--ms-text);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  margin-bottom: var(--gap-sm);
  tab-size: 2;
}

.instructions-block:focus {
  outline: 3px solid rgba(71, 112, 219, .3);
  outline-offset: 2px;
}

.instructions-block--dark {
  background: #0d1117;
  border-color: #30363d;
  color: #c9d1d9;
}

/* Panel divider */
.panel-divider {
  height: 1px;
  background: var(--ms-border);
  margin: var(--gap) 0;
}

/* ─── Counter Items ────────────────────────────────────────────────────────────── */
#counter-items-list { margin-bottom: var(--gap-sm); }

.counter-item-row {
  display: grid;
  /* info | qty-group | price-group | keep-btn */
  grid-template-columns: 1fr auto auto auto;
  gap: var(--gap-sm);
  /* Align to bottom so labels above inputs don't mis-align with the info column */
  align-items: end;
  padding: 14px 0;
  border-bottom: 1px solid var(--ms-border);
}

.counter-item-row:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

/* Info column */
.counter-item-info { min-width: 0; align-self: center; }

.counter-item-name {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  color: var(--ms-text-navy);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.counter-item-hint {
  font-size: 11px;
  color: var(--ms-text-muted);
  margin-top: 2px;
}

/* Input groups — label stacked above input */
.counter-input-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* Compact label above each counter input */
.counter-field-label {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--ms-text-muted);
  white-space: nowrap;
  /* Labels are for display only — pointer-events are on the input */
}

/* Quantity: narrow, integers only */
.counter-qty-input {
  width: 72px;
  text-align: center;
}

/* Unit price: slightly wider */
.counter-price-input {
  width: 110px;
  text-align: right;
}

.counter-generate-row {
  padding-top: var(--gap-sm);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Shopify writeback config */
.writeback-block {
  margin-bottom: var(--gap);
  padding: 18px;
  border: 1px solid var(--ms-border);
  border-radius: var(--r-card);
  background: var(--ms-surface-alt);
}

.write-config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.writeback-block .form-group {
  margin-bottom: 0;
}

.writeback-block input[type="text"],
.writeback-block input[type="password"] {
  width: 100%;
}

.config-help-text {
  margin-top: 10px;
  font-size: 12px;
  color: var(--ms-text-muted);
}

/* JSON Details */
.json-details { margin-top: var(--gap-sm); }

.json-details-summary {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  color: var(--ms-text-muted);
  cursor: pointer;
  padding: 5px 0;
  user-select: none;
  list-style: none;
}

.json-details-summary::-webkit-details-marker { display: none; }
.json-details-summary::before {
  content: '▶';
  font-size: 9px;
  transition: transform .15s;
  display: inline-block;
  color: var(--ms-blue);
}

details[open] .json-details-summary::before { transform: rotate(90deg); }
.json-details-summary:hover { color: var(--ms-text-navy); }
.json-details-summary:focus-visible {
  outline: 3px solid rgba(71, 112, 219, .3);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ─── Footer ──────────────────────────────────────────────────────────────────── */
.app-footer {
  background: var(--ms-navy);
  margin-top: var(--gap);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px var(--gap);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.footer-logo-image {
  flex-shrink: 0;
  display: block;
  width: auto;
  height: 30px;
  max-width: 120px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: .7;
}

.footer-inner p {
  font-family: var(--font-head);
  font-size: 12px;
  color: rgba(255,255,255,.40);
  text-align: center;
  margin: 0;
}

.app-footer code {
  font-family: var(--font-mono);
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.7);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ─── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --gap: 16px; --gap-sm: 10px; }

  .header-inner { height: auto; padding: 14px 0; flex-wrap: wrap; }
  .header-note  { display: none; }
  .header-divider { display: none; }
  .app-title    { font-size: 13px; }
  .brand-logo-image { height: 42px; max-width: 200px; }

  .card-body  { padding: var(--gap); }
  .card-header { padding: 14px var(--gap); }

  .form-row { flex-direction: column; align-items: flex-start; }
  .file-import-group { flex-wrap: wrap; }

  .item-card { grid-template-columns: 1fr; }
  .item-thumb, .item-thumb-placeholder { width: 100%; height: 160px; border-radius: var(--r-card); }

  .totals-grid { grid-template-columns: repeat(2, 1fr); }
  .total-cell-value { font-size: 18px; }

  .action-trigger-row { flex-direction: column; }
  .action-trigger-row .btn { width: 100%; }

  /* Counter row: info full-width on row 1; qty + price + keep-btn on row 2 */
  .counter-item-row {
    grid-template-columns: auto auto auto;
    grid-template-rows: auto auto;
    row-gap: 8px;
    align-items: end;
  }
  .counter-item-info                 { grid-column: 1 / -1; grid-row: 1; }
  .counter-input-group:first-of-type { grid-column: 1; grid-row: 2; }
  .counter-input-group:last-of-type  { grid-column: 2; grid-row: 2; }
  .counter-item-row .btn-sm          { grid-column: 3; grid-row: 2; align-self: end; }
  .counter-qty-input                 { width: 64px; }
  .counter-price-input               { width: 90px; text-align: left; }
}

@media (max-width: 480px) {
  .totals-grid { grid-template-columns: 1fr; }
  .item-prices { grid-template-columns: repeat(2, 1fr); }
  .info-grid   { grid-template-columns: 1fr; }
}