:root,
html[data-theme="default"] {
  --bg-primary: #f4f7fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef3f8;
  --surface-elevated: #ffffff;
  --text-primary: #1f2937;
  --text-secondary: #667085;
  --text-soft: #8c98a8;
  --border-color: #d8e1eb;
  --border-strong: #c3cfdb;
  --header-bg: #243447;
  --header-text: #ffffff;
  --primary-btn: #0d6efd;
  --primary-hover: #0b5ed7;
  --success: #198754;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #0dcaf0;
  --foc-bg: #eef6ff;
  --label-color: #334155;
  --help-text: #6b7280;

  --btn-padding-y: 0.9rem;
  --btn-padding-x: 1.25rem;
  --btn-radius: 12px;
  --btn-font-size: 0.98rem;
  --btn-font-weight: 700;
  --btn-shadow: 0 8px 18px rgba(13, 110, 253, 0.16);
  --btn-shadow-hover: 0 14px 26px rgba(13, 110, 253, 0.22);
  --btn-letter-spacing: 0.01em;
  --btn-hollow-bg: transparent;
  --btn-hollow-border: rgba(13, 110, 253, 0.28);

  --input-height: 48px;
  --input-radius: 12px;
  --input-border-width: 1px;
  --input-font-size: 0.96rem;
  --input-padding-x: 0.95rem;
  --input-bg: #ffffff;
  --input-text: #1f2937;
  --input-border: #d8e1eb;
  --input-border-hover: #b7c6d8;
  --input-focus-ring: rgba(13, 110, 253, 0.16);
  --input-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.04);
  --input-shadow-focus: 0 0 0 4px rgba(13, 110, 253, 0.12);

  --card-radius: 18px;
  --surface-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --surface-shadow-soft: 0 4px 14px rgba(15, 23, 42, 0.05);

  --table-header-bg: #243447;
  --table-header-text: #ffffff;
  --badge-db-bg: #dff3e6;
  --badge-db-text: #166534;
  --badge-manual-bg: #fff4d6;
  --badge-manual-text: #8a5a00;
}

html[data-theme="dark"] {
  --bg-primary: #0f1722;
  --bg-secondary: #17212f;
  --bg-tertiary: #1e293b;
  --surface-elevated: #1b2636;
  --text-primary: #f8fafc;
  --text-secondary: #a5b4c7;
  --text-soft: #7c8ba1;
  --border-color: #314154;
  --border-strong: #425469;
  --header-bg: #020817;
  --header-text: #eff6ff;
  --primary-btn: #60a5fa;
  --primary-hover: #3b82f6;
  --success: #22c55e;
  --danger: #f87171;
  --warning: #fbbf24;
  --info: #38bdf8;
  --foc-bg: #13253d;
  --label-color: #dbe7f3;
  --help-text: #9fb1c4;

  --btn-padding-y: 0.9rem;
  --btn-padding-x: 1.25rem;
  --btn-radius: 12px;
  --btn-font-size: 0.98rem;
  --btn-font-weight: 700;
  --btn-shadow: 0 10px 20px rgba(0, 0, 0, 0.34);
  --btn-shadow-hover: 0 16px 30px rgba(0, 0, 0, 0.42);
  --btn-letter-spacing: 0.01em;
  --btn-hollow-bg: transparent;
  --btn-hollow-border: rgba(96, 165, 250, 0.38);

  --input-height: 49px;
  --input-radius: 12px;
  --input-border-width: 1px;
  --input-font-size: 0.96rem;
  --input-padding-x: 0.95rem;
  --input-bg: #0f172a;
  --input-text: #f8fafc;
  --input-border: #334155;
  --input-border-hover: #475569;
  --input-focus-ring: rgba(96, 165, 250, 0.18);
  --input-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.22);
  --input-shadow-focus: 0 0 0 4px rgba(96, 165, 250, 0.14);

  --card-radius: 18px;
  --surface-shadow: 0 14px 32px rgba(0, 0, 0, 0.28);
  --surface-shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.2);

  --table-header-bg: #020817;
  --table-header-text: #eff6ff;
  --badge-db-bg: #123222;
  --badge-db-text: #7ee2a8;
  --badge-manual-bg: #3d3006;
  --badge-manual-text: #ffd76a;
}

html[data-theme="fiori"] {
  --bg-primary: #f7f9fb;
  --bg-secondary: #ffffff;
  --bg-tertiary: #edf3f8;
  --surface-elevated: #ffffff;
  --text-primary: #223548;
  --text-secondary: #5f7388;
  --text-soft: #8294a7;
  --border-color: #d5dde5;
  --border-strong: #bfcbd8;
  --header-bg: #0a6ed1;
  --header-text: #ffffff;
  --primary-btn: #0a6ed1;
  --primary-hover: #085caf;
  --success: #107e3e;
  --danger: #bb0000;
  --warning: #e9730c;
  --info: #0a6ed1;
  --foc-bg: #edf5ff;
  --label-color: #314a60;
  --help-text: #60758b;

  --btn-padding-y: 0.82rem;
  --btn-padding-x: 1.15rem;
  --btn-radius: 10px;
  --btn-font-size: 0.94rem;
  --btn-font-weight: 700;
  --btn-shadow: 0 7px 18px rgba(10, 110, 209, 0.14);
  --btn-shadow-hover: 0 12px 22px rgba(10, 110, 209, 0.2);
  --btn-letter-spacing: 0;
  --btn-hollow-bg: transparent;
  --btn-hollow-border: rgba(10, 110, 209, 0.28);

  --input-height: 44px;
  --input-radius: 10px;
  --input-border-width: 1px;
  --input-font-size: 0.95rem;
  --input-padding-x: 0.9rem;
  --input-bg: #ffffff;
  --input-text: #223548;
  --input-border: #cfd8e3;
  --input-border-hover: #b8c5d3;
  --input-focus-ring: rgba(10, 110, 209, 0.15);
  --input-shadow: inset 0 1px 1px rgba(34, 53, 72, 0.04);
  --input-shadow-focus: 0 0 0 4px rgba(10, 110, 209, 0.11);

  --card-radius: 16px;
  --surface-shadow: 0 10px 24px rgba(34, 53, 72, 0.08);
  --surface-shadow-soft: 0 4px 14px rgba(34, 53, 72, 0.05);

  --table-header-bg: #0a6ed1;
  --table-header-text: #ffffff;
  --badge-db-bg: #e0f3e7;
  --badge-db-text: #107e3e;
  --badge-manual-bg: #fff1df;
  --badge-manual-text: #aa5b00;
}

html[data-theme="teal"] {
  --bg-primary: #f1f7f7;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e4efee;
  --surface-elevated: #ffffff;
  --text-primary: #163235;
  --text-secondary: #5f7c80;
  --text-soft: #799397;
  --border-color: #c8d9d8;
  --border-strong: #b4c9c7;
  --header-bg: #01696f;
  --header-text: #ffffff;
  --primary-btn: #02848b;
  --primary-hover: #01696f;
  --success: #2f855a;
  --danger: #d64545;
  --warning: #d69e2e;
  --info: #0ea5a8;
  --foc-bg: #def4f3;
  --label-color: #214346;
  --help-text: #658185;

  --btn-padding-y: 0.88rem;
  --btn-padding-x: 1.25rem;
  --btn-radius: 999px;
  --btn-font-size: 0.94rem;
  --btn-font-weight: 700;
  --btn-shadow: 0 8px 20px rgba(1, 105, 111, 0.16);
  --btn-shadow-hover: 0 14px 26px rgba(1, 105, 111, 0.22);
  --btn-letter-spacing: 0.01em;
  --btn-hollow-bg: transparent;
  --btn-hollow-border: rgba(2, 132, 139, 0.26);

  --input-height: 48px;
  --input-radius: 14px;
  --input-border-width: 1px;
  --input-font-size: 0.95rem;
  --input-padding-x: 1rem;
  --input-bg: #ffffff;
  --input-text: #163235;
  --input-border: #c7d8d7;
  --input-border-hover: #afc7c5;
  --input-focus-ring: rgba(2, 132, 139, 0.15);
  --input-shadow: inset 0 1px 2px rgba(1, 105, 111, 0.04);
  --input-shadow-focus: 0 0 0 4px rgba(2, 132, 139, 0.1);

  --card-radius: 20px;
  --surface-shadow: 0 12px 28px rgba(1, 105, 111, 0.1);
  --surface-shadow-soft: 0 4px 14px rgba(1, 105, 111, 0.05);

  --table-header-bg: #01696f;
  --table-header-text: #ffffff;
  --badge-db-bg: #dff5e9;
  --badge-db-text: #1f7a50;
  --badge-manual-bg: #fff5dd;
  --badge-manual-text: #916500;
}

html[data-theme="slate"] {
  --bg-primary: #f4f6f8;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8edf3;
  --surface-elevated: #ffffff;
  --text-primary: #22313f;
  --text-secondary: #66788a;
  --text-soft: #8090a1;
  --border-color: #d4dde6;
  --border-strong: #c2ccd8;
  --header-bg: #34495e;
  --header-text: #ffffff;
  --primary-btn: #3498db;
  --primary-hover: #217dbb;
  --success: #27ae60;
  --danger: #e74c3c;
  --warning: #f39c12;
  --info: #16a085;
  --foc-bg: #edf6fb;
  --label-color: #304252;
  --help-text: #6c8194;

  --btn-padding-y: 0.84rem;
  --btn-padding-x: 1.18rem;
  --btn-radius: 10px;
  --btn-font-size: 0.94rem;
  --btn-font-weight: 700;
  --btn-shadow: 0 8px 18px rgba(52, 73, 94, 0.14);
  --btn-shadow-hover: 0 12px 24px rgba(52, 73, 94, 0.2);
  --btn-letter-spacing: 0.01em;
  --btn-hollow-bg: transparent;
  --btn-hollow-border: rgba(52, 152, 219, 0.24);

  --input-height: 45px;
  --input-radius: 10px;
  --input-border-width: 1px;
  --input-font-size: 0.95rem;
  --input-padding-x: 0.92rem;
  --input-bg: #ffffff;
  --input-text: #22313f;
  --input-border: #d4dde6;
  --input-border-hover: #becbda;
  --input-focus-ring: rgba(52, 152, 219, 0.15);
  --input-shadow: inset 0 1px 2px rgba(52, 73, 94, 0.04);
  --input-shadow-focus: 0 0 0 4px rgba(52, 152, 219, 0.1);

  --card-radius: 16px;
  --surface-shadow: 0 10px 24px rgba(52, 73, 94, 0.08);
  --surface-shadow-soft: 0 4px 14px rgba(52, 73, 94, 0.05);

  --table-header-bg: #34495e;
  --table-header-text: #ffffff;
  --badge-db-bg: #dff2e7;
  --badge-db-text: #20754b;
  --badge-manual-bg: #fff3dc;
  --badge-manual-text: #9a6900;
}

/* Base */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background 0.25s ease, color 0.25s ease;
}

/* Surfaces */
nav,
.header,
table,
.foc-section,
.modal-content,
.status-message,
.foc-input-group,
tr {
  border-radius: var(--card-radius);
}

.header,
table,
.foc-section,
.modal-content {
  box-shadow: var(--surface-shadow);
}

.foc-input-group,
.status-message {
  box-shadow: var(--surface-shadow-soft);
}

/* Header / nav color harmony */
.header,
nav {
  background: var(--header-bg);
  color: var(--header-text);
}

th {
  background: var(--table-header-bg);
  color: var(--table-header-text);
}

/* Labels and helper text */
label,
.foc-input-group label,
.field-label {
  color: var(--label-color);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 0.45rem;
  display: inline-block;
}

.help-text,
.field-help,
small {
  color: var(--help-text);
  font-size: 0.78rem;
  line-height: 1.45;
}

/* Theme selector */
.theme-toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 14px 0 0;
}

.theme-toolbar-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  opacity: 0.92;
}

.theme-selector {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.theme-chip {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  min-width: 44px;
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.theme-chip:hover,
.theme-chip:focus-visible {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.38);
}

.theme-chip.is-active {
  background: #ffffff;
  color: var(--header-bg);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.14);
}

.theme-toggle {
  min-width: 46px;
  min-height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.18);
}

/* Foundation-inspired buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  margin: 6px;
  border: 1px solid transparent;
  border-radius: var(--btn-radius);
  background: var(--primary-btn);
  color: #fff;
  cursor: pointer;
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  letter-spacing: var(--btn-letter-spacing);
  line-height: 1.1;
  text-decoration: none;
  box-shadow: var(--btn-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, filter 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--btn-shadow-hover);
  filter: saturate(1.04);
}

.btn:active {
  transform: translateY(0);
}

.btn-sm {
  min-height: 34px;
  padding: 0.5rem 0.78rem;
  font-size: 0.78rem;
  border-radius: calc(var(--btn-radius) - 3px);
  box-shadow: none;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-warning {
  background: var(--warning);
  color: #1f2937;
}

.btn-info {
  background: var(--info);
  color: #fff;
}

.btn-secondary {
  background: #64748b;
  color: #fff;
}

/* Foundation-style hollow buttons */
.btn-hollow,
.btn-outline {
  background: var(--btn-hollow-bg);
  color: var(--primary-btn);
  border-color: var(--btn-hollow-border);
  box-shadow: none;
}

.btn-hollow:hover,
.btn-outline:hover,
.btn-hollow:focus-visible,
.btn-outline:focus-visible {
  background: color-mix(in srgb, var(--primary-btn) 8%, transparent);
  color: var(--primary-btn);
  box-shadow: none;
}

/* Foundation-style clear buttons */
.btn-clear,
.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--primary-btn);
  box-shadow: none;
}

.btn-clear:hover,
.btn-ghost:hover,
.btn-clear:focus-visible,
.btn-ghost:focus-visible {
  background: color-mix(in srgb, var(--primary-btn) 8%, transparent);
  color: var(--primary-btn);
  box-shadow: none;
}

.btn[disabled],
.btn.disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

/* Clean form fields */
input,
select,
textarea {
  width: 100%;
  min-height: var(--input-height);
  padding: 0 var(--input-padding-x);
  border: var(--input-border-width) solid var(--input-border);
  border-radius: var(--input-radius);
  font-size: var(--input-font-size);
  font-weight: 500;
  line-height: 1.35;
  background: var(--input-bg);
  color: var(--input-text);
  box-shadow: var(--input-shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

textarea {
  min-height: 120px;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
  resize: vertical;
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--input-border-hover);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-soft);
  opacity: 1;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-btn);
  box-shadow: var(--input-shadow-focus), var(--input-shadow);
  background: var(--input-bg);
}

input[readonly],
textarea[readonly] {
  background: color-mix(in srgb, var(--input-bg) 88%, var(--bg-tertiary) 12%);
  color: var(--text-secondary);
}

input[disabled],
select[disabled],
textarea[disabled] {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Number field cleanup inspired by framework polish */
input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Foundation-inspired input groups */
.input-group,
.field-row {
  display: flex;
  align-items: stretch;
  width: 100%;
}

.input-group-field {
  flex: 1 1 auto;
  min-width: 0;
}

.input-group-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--input-height);
  padding: 0 0.95rem;
  border: 1px solid var(--input-border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
}

.input-group-button {
  display: inline-flex;
}

.input-group > .input-group-label:first-child {
  border-top-left-radius: var(--input-radius);
  border-bottom-left-radius: var(--input-radius);
  border-right: none;
}

.input-group > .input-group-field:not(:first-child),
.input-group > input:not(:first-child),
.input-group > select:not(:first-child) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.input-group > .input-group-button:last-child .btn,
.input-group > .input-group-button:last-child .button {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  margin: 0;
  min-height: var(--input-height);
}

/* Table-aligned compact form controls */
.lot-cell select {
  min-height: 36px;
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  border-radius: 10px;
}

.itemCode,
.itemDesc,
.itemQty,
.billQty,
.freeQty,
.focInput {
  font-variant-numeric: tabular-nums;
}

/* Validation surfaces */
.valid {
  border-color: var(--success) !important;
  background: color-mix(in srgb, var(--success) 8%, var(--input-bg) 92%) !important;
}

.invalid {
  border-color: var(--danger) !important;
  background: color-mix(in srgb, var(--danger) 8%, var(--input-bg) 92%) !important;
}

.optimized {
  border-color: var(--warning) !important;
  background: color-mix(in srgb, var(--warning) 14%, var(--input-bg) 86%) !important;
}

.whole-optimized {
  border-color: var(--info) !important;
  background: color-mix(in srgb, var(--info) 10%, var(--input-bg) 90%) !important;
}

/* FOC blocks */
.foc-section {
  background: var(--foc-bg);
  border-left: 4px solid var(--header-bg);
}

.foc-section h3 {
  color: var(--header-bg);
}

.foc-input-group {
  background: var(--surface-elevated);
  border: 1px solid var(--border-color);
  padding: 1rem;
}

.foc-db-badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.24rem 0.55rem;
  border-radius: 999px;
  font-weight: 700;
  margin-left: 0.45rem;
  vertical-align: middle;
}

.foc-db-badge.from-db {
  background: var(--badge-db-bg);
  color: var(--badge-db-text);
}

.foc-db-badge.manual {
  background: var(--badge-manual-bg);
  color: var(--badge-manual-text);
}

.foc-unlock-link {
  color: var(--primary-btn);
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
}

.foc-unlock-link:hover {
  opacity: 0.86;
}

/* Status / modal polish */
.status-message {
  background: var(--surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.modal-content {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Totals bar polish */
#orderTotalBar {
  border-radius: calc(var(--card-radius) - 2px);
  box-shadow: var(--surface-shadow-soft);
}

/* Mobile */
@media (max-width: 768px) {
  .theme-toolbar {
    gap: 8px;
  }

  .theme-toolbar-label {
    width: 100%;
    text-align: center;
  }

  .theme-selector {
    width: 100%;
  }

  .theme-chip {
    flex: 1 1 calc(33.33% - 8px);
    min-width: 92px;
  }

  .btn {
    width: 100%;
    margin: 0;
    min-height: 50px;
    font-size: 1rem;
  }

  .btn-sm {
    width: auto;
    min-height: 38px;
    font-size: 0.78rem;
  }

  .foc-input-group input {
    max-width: 100%;
  }

  .input-group {
    flex-wrap: nowrap;
  }
}