:root {
  --bg: #fffdf6;
  --text: #1f1a0a;
  --hint: #7d7458;
  --tile-bg: #ffffff;
  --accent: #f5b800;          /* yellow: buttons, active chips */
  --accent-text: #2a1d00;     /* dark text on yellow */
  --accent-ink: #8a5d00;      /* darker amber for text links on white */
  --border: rgba(90, 65, 0, 0.14);
  --shadow: 0 1px 2px rgba(60, 45, 0, 0.05), 0 1px 3px rgba(60, 45, 0, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

html, body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding: 18px 16px 40px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

h1 {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 4px 0 20px;
}

label {
  font-size: 13px;
  font-weight: 600;
  color: var(--hint);
  display: block;
  margin: 14px 0 6px;
  text-transform: none;
}

/* ---- Home / menu tiles ---- */

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

.tile-grid.single-col {
  grid-template-columns: 1fr;
}

.tile {
  background: var(--tile-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 22px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.tile:hover {
  box-shadow: 0 2px 4px rgba(16, 24, 40, 0.06), 0 4px 10px rgba(16, 24, 40, 0.08);
}

.tile:active {
  transform: scale(0.97);
  opacity: 0.85;
}

/* ---- Navigation ---- */

.back-btn {
  background: none;
  border: none;
  color: var(--accent-ink);
  font-size: 15px;
  font-weight: 600;
  padding: 6px 0 18px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}

.placeholder {
  color: var(--hint);
  font-size: 14px;
  padding: 32px 16px;
  text-align: center;
  background: var(--tile-bg);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

/* ---- Form elements, shared by Bill/Return/Transaction/Truck screens ---- */

.field {
  margin-bottom: 4px;
}

.field label {
  margin: 14px 0 6px;
}

.field input[type="text"],
.field input[type="number"],
.field input[type="date"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--tile-bg);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

.field input:focus,
input[type="text"]:focus,
input[type="number"]:focus,
input[type="date"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.toggle-row {
  display: flex;
  gap: 10px;
  margin: 6px 0 18px;
}

.toggle-btn {
  flex: 1;
  padding: 13px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--tile-bg);
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.12s ease;
}

.toggle-btn.active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  box-shadow: 0 2px 6px color-mix(in srgb, var(--accent) 35%, transparent);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.chip {
  padding: 9px 16px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--tile-bg);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.12s ease;
}

.chip:active {
  transform: scale(0.96);
}

.chip.active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
}

.chip.new-customer {
  border-style: dashed;
  color: var(--accent-ink);
  font-weight: 600;
}

.search-results {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: 6px;
  border: 1px solid var(--border);
}

.search-result-row {
  padding: 13px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  background: var(--tile-bg);
  transition: background 0.1s ease;
}

.search-result-row:active {
  background: color-mix(in srgb, var(--accent) 8%, var(--tile-bg));
}

.search-result-row:last-child {
  border-bottom: none;
}

.search-result-row .name {
  font-weight: 600;
  font-size: 15px;
}

.search-result-row .detail {
  font-size: 13px;
  color: var(--hint);
  margin-top: 2px;
}

.search-result-row.new-customer {
  color: var(--accent-ink);
  font-weight: 600;
}

.selected-customer {
  padding: 14px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent) 8%, var(--tile-bg));
  border: 1.5px solid var(--accent);
  margin-bottom: 8px;
}

.selected-customer > div:first-child {
  font-weight: 700;
  font-size: 15px;
}

.selected-customer .change-link {
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.item-row {
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  background: var(--tile-bg);
  border: 1px solid var(--border);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

.item-row .remove-item {
  color: #e5484d;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  margin-left: 12px;
}

.primary-btn {
  width: 100%;
  padding: 15px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 12px;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform 0.1s ease, opacity 0.1s ease;
}

.primary-btn:active {
  transform: scale(0.98);
  opacity: 0.92;
}

.secondary-btn {
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--tile-bg);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  transition: transform 0.1s ease;
}

.secondary-btn:active {
  transform: scale(0.98);
}

.error-box {
  background: color-mix(in srgb, #e5484d 12%, var(--bg));
  color: #e5484d;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 14px;
  border: 1px solid color-mix(in srgb, #e5484d 25%, transparent);
}

.summary-box {
  background: var(--tile-bg);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: var(--radius);
  white-space: pre-wrap;
  font-size: 14.5px;
  line-height: 1.6;
  margin-bottom: 14px;
  box-shadow: var(--shadow);
}

.section-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 22px 0 10px;
}

/* ---- shop app additions ---- */
.hint { color: var(--hint); font-size: 13px; }
.who-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; color: var(--hint); font-size: 13px; }