/* ==========================================================================
   GPS MUSCAT STAFF APP
   Unified stylesheet aligned to the marketing site visual system.

   Structure
   1. Design tokens
   2. Base reset
   3. Accessibility utilities
   4. App shell
   5. Shared panels
   6. Navigation
   7. Form header
   8. Form structure
   9. Inputs
   10. Item rows
   11. Checkboxes
   12. Buttons
   13. Focus states
   14. Reports and tables
   15. Progressive enhancement fallback
   16. Responsive: desktop and mobile
   ========================================================================== */

/* ==========================================================================
   1. DESIGN TOKENS
   Update values here first when changing brand look, spacing, sizing, or layout.
   ========================================================================== */

:root {
  /* Color system */
  --color-bg: #edf3fb;
  --color-bg-strong: #dbe8fb;
  --color-bg-end: #eaf2ff;

  --color-surface: #ffffff;
  --color-surface-soft: #f4f8ff;
  --color-surface-alt: #e7f0ff;
  --color-surface-brand: #d6e5ff;
  --color-surface-brand-strong: #c1d8ff;
  --color-surface-deep: #0b3d91;

  --color-text: #102033;
  --color-text-strong: #102033;
  --color-text-muted: #52667d;
  --color-text-faint: #6f8196;
  --color-text-inverse: #f7fbff;
  --color-readonly-text: #374151;

  --color-primary: #0f52b8;
  --color-primary-hover: #1f6fff;
  --color-primary-dark: #0b3d91;
  --color-primary-ring: rgba(15, 82, 184, 0.14);
  --color-primary-soft: #e4eeff;
  --color-primary-soft-border: rgba(15, 82, 184, 0.18);

  --color-border: rgba(15, 82, 184, 0.14);
  --color-border-strong: rgba(15, 82, 184, 0.22);
  --color-border-soft: rgba(15, 82, 184, 0.1);
  --color-border-input: rgba(15, 82, 184, 0.16);
  --color-border-input-focus: rgba(15, 82, 184, 0.32);

  --color-secondary-bg: #f4f8ff;
  --color-secondary-bg-hover: #e7f0ff;

  --color-danger-bg: #fff1f2;
  --color-danger-bg-hover: #ffe4e6;
  --color-danger-border: #fecaca;
  --color-danger-border-hover: #fda4af;
  --color-danger-solid: #d94b5a;
  --color-danger-solid-hover: #eb6a77;

  --color-readonly-bg-top: rgba(247, 251, 255, 0.96);
  --color-readonly-bg-bottom: rgba(236, 244, 255, 0.96);

  --color-glass-surface: rgba(255, 255, 255, 0.72);
  --color-glass-surface-strong: rgba(255, 255, 255, 0.84);
  --color-glass-border: rgba(15, 82, 184, 0.14);

  --color-panel-top: rgba(255, 255, 255, 0.96);
  --color-panel-bottom: rgba(235, 244, 255, 0.94);
  --color-panel-solid: rgba(255, 255, 255, 0.9);
  --color-nav-solid: rgba(255, 255, 255, 0.88);

  --color-item-group-top: rgba(255, 255, 255, 0.72);
  --color-item-group-bottom: rgba(232, 241, 255, 0.62);

  --color-table-border: rgba(15, 23, 42, 0.08);
  --color-table-head: rgba(248, 250, 252, 0.95);
  --color-table-hover: rgba(15, 23, 42, 0.03);
  --color-stock-out: rgba(217, 75, 90, 0.08);
  --color-stock-out-hover: rgba(217, 75, 90, 0.14);
  --color-refunded: rgba(217, 75, 90, 0.06);

  /* Typography */
  --font-family-base: "Inter", Arial, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.95rem;
  --font-size-xs: 0.875rem;
  --font-size-table: 11px;
  --font-size-table-sub: 10px;
  --font-size-title: 2rem;
  --font-size-title-mobile: 1.5rem;
  --font-size-panel-title: 1.125rem;

  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-base: 1.5;
  --line-height-tight: 1.2;
  --line-height-compact: 1.35;

  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;

  --page-padding-desktop: clamp(0.75rem, 1.5vw, 1.5rem);
  --page-padding-mobile: var(--space-3);

  /* Radius */
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --radius-item-group: 20px;
  --radius-item-suggestion: 16px;
  --radius-qty-btn: 10px;

  /* Layout */
  --touch-target-min: 48px;
  --touch-target-compact: 40px;
  --field-height: 52px;
  --field-height-mobile: 50px;

  --nav-width: clamp(220px, 18vw, 280px);
  --app-max-width: min(96vw, 1600px);
  --app-gap: clamp(1.5rem, 2vw, 2.5rem);

  --items-qty-width: 120px;
  --items-price-width: 160px;
  --items-remove-width: 48px;
  --items-remove-width-mobile: 52px;

  --suggestions-max-height: 260px;
  --report-search-width: 260px;
  --report-date-width: 190px;
  --report-sales-table-min-width: 1200px;
  --report-inventory-table-min-width: 760px;

  /* Effects */
  --blur-glass: 10px;
  --blur-panel-fallback: 8px;

  --shadow-sm: 0 10px 26px rgba(11, 61, 145, 0.08);
  --shadow-md: 0 18px 44px rgba(11, 61, 145, 0.14);
  --shadow-primary: 0 12px 28px rgba(15, 82, 184, 0.24);
  --shadow-danger: 0 10px 22px rgba(217, 75, 90, 0.18);
  --shadow-input: 0 1px 2px rgba(15, 82, 184, 0.04);
  --shadow-focus: 0 10px 24px rgba(15, 82, 184, 0.08);

  /* Motion */
  --transition-fast: 0.2s ease;
  --transition-interactive:
    background var(--transition-fast), border-color var(--transition-fast),
    transform var(--transition-fast), opacity var(--transition-fast),
    color var(--transition-fast), box-shadow var(--transition-fast);

  /* Breakpoints */
  --breakpoint-mobile: 860px;
}

/* ==========================================================================
   2. BASE RESET
   ========================================================================== */

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

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

body,
h1,
h2,
p,
fieldset,
legend {
  margin: 0;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

/* ==========================================================================
   3. ACCESSIBILITY UTILITIES
   ========================================================================== */

body {
  min-height: 100vh;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background:
    radial-gradient(
      circle at 85% 18%,
      rgba(31, 111, 255, 0.22),
      transparent 24%
    ),
    radial-gradient(
      circle at 18% 12%,
      rgba(15, 82, 184, 0.08),
      transparent 30%
    ),
    linear-gradient(
      180deg,
      var(--color-bg-strong) 0%,
      var(--color-bg) 52%,
      var(--color-bg-end) 100%
    );
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
  padding: var(--page-padding-desktop);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ==========================================================================
   4. APP SHELL
   Desktop: left nav + main content.
   Mobile: stacked layout handled below.
   ========================================================================== */

.app-shell {
  display: grid;
  grid-template-columns: minmax(220px, var(--nav-width)) minmax(0, 1fr);
  gap: var(--app-gap);
  width: var(--app-max-width);
  margin: 0 auto;
  align-items: start;
}

.container,
.app-view {
  width: 100%;
  max-width: none;
  min-width: 0;
}

.app-view[hidden] {
  display: none;
}

/* ==========================================================================
   5. SHARED PANELS
   ========================================================================== */

.sales-form,
.page-panel {
  padding: 28px;
  background: linear-gradient(
    180deg,
    var(--color-panel-top) 0%,
    var(--color-panel-bottom) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.nav-panel {
  position: sticky;
  top: var(--space-4);
}

.nav-panel__inner {
  padding: 28px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   6. NAVIGATION
   ========================================================================== */

.nav-panel__title {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-panel-title);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-strong);
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  min-height: var(--touch-target-min);
  padding: 0 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-text-strong);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  line-height: 1;
  text-align: left;
  box-shadow: none;
  cursor: pointer;
  transition: var(--transition-interactive);
}

.nav-button:hover {
  background: rgba(15, 82, 184, 0.06);
  border-color: rgba(15, 82, 184, 0.28);
  color: var(--color-primary);
}

.nav-button:active {
  transform: scale(0.99);
}

.nav-button--active,
.nav-button[aria-pressed="true"] {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-soft-border);
  color: var(--color-primary);
}

.nav-button[aria-pressed="true"] {
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

/* ==========================================================================
   7. FORM HEADER
   ========================================================================== */

.form-header {
  margin-bottom: var(--space-6);
  text-align: center;
}

.form-header h1 {
  margin-bottom: var(--space-1);
  font-size: var(--font-size-title);
  color: var(--color-text-strong);
}

.form-header p {
  color: var(--color-text-muted);
}

/* ==========================================================================
   8. FORM STRUCTURE
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-4);
}

fieldset.form-group,
.form-group fieldset {
  min-width: 0;
  padding: 0;
  margin: 0 0 var(--space-4);
  border: 0;
}

fieldset.form-group legend,
.form-group legend {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-strong);
}

.form-group label {
  display: block;
  margin-bottom: 0.65rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-strong);
}

.form-row {
  display: flex;
  gap: var(--space-3);
}

.form-row .form-group {
  flex: 1;
  min-width: 0;
}

/* ==========================================================================
   9. INPUTS
   ========================================================================== */

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="datetime-local"],
.form-group textarea {
  width: 100%;
  min-height: var(--field-height);
  padding: 0 18px;
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-text);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.65),
    var(--shadow-input);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-group textarea {
  min-height: 120px;
  padding: 16px 18px;
  resize: vertical;
}

.form-group input[type="text"]::placeholder,
.form-group input[type="number"]::placeholder,
.form-group input[type="datetime-local"]::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-faint);
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="datetime-local"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-border-input-focus);
  background: var(--color-surface);
  box-shadow:
    0 0 0 4px rgba(15, 82, 184, 0.12),
    var(--shadow-focus);
}

.form-group input[readonly] {
  background: linear-gradient(
    180deg,
    var(--color-readonly-bg-top) 0%,
    var(--color-readonly-bg-bottom) 100%
  );
  color: var(--color-readonly-text);
  border-color: rgba(15, 82, 184, 0.12);
  cursor: default;
}

.input-with-clear {
  position: relative;
  width: 100%;
}

.item-autocomplete > .input-with-clear {
  width: 100%;
}

.input-with-clear > input[type="text"],
.input-with-clear > input[type="search"],
.item-autocomplete .input-with-clear > .item-input {
  padding-right: 2.75rem;
}

.input-clear-btn {
  position: absolute;
  top: 50%;
  right: 0.85rem;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  min-height: 28px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  box-shadow: none;
  cursor: pointer;
  transition: var(--transition-interactive);
}

.input-clear-btn:hover {
  background: rgba(15, 82, 184, 0.06);
  color: var(--color-primary);
}

.input-clear-btn[hidden] {
  display: none;
}

input[type="search"]::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
  display: none;
}

/* ==========================================================================
   10. ITEM ROWS
   Single shared bubble around all rows.
   ========================================================================== */

#itemsContainer {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 2px;
  padding: 14px;
  background: linear-gradient(
    180deg,
    var(--color-item-group-top) 0%,
    var(--color-item-group-bottom) 100%
  );
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-item-group);
}

.item-row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  padding: 12px 0;
  background: transparent;
  border: 0;
  border-radius: 0;
}

.item-row + .item-row {
  border-top: 1px solid var(--color-border-soft);
}

.item-input {
  flex: 1;
  min-width: 0;
}

.quantity-input {
  flex: 0 0 var(--items-qty-width);
  min-width: var(--items-qty-width);
}

.price-input {
  flex: 0 0 var(--items-price-width);
  min-width: var(--items-price-width);
}

.item-autocomplete {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
}

.item-autocomplete .item-input {
  width: 100%;
}

.item-suggestions {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: var(--suggestions-max-height);
  overflow-y: auto;
  padding: 8px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-item-group);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(var(--blur-glass));
}

.item-suggestions[hidden] {
  display: none;
}

.item-suggestion {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 0.9rem 1rem;
  border: 0;
  border-radius: var(--radius-item-suggestion);
  background: transparent;
  color: var(--color-text-strong);
  font-size: 0.96rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-tight);
  text-align: left;
  line-height: var(--line-height-compact);
  white-space: normal;
  cursor: pointer;
  box-shadow: none;
}

.item-suggestion:hover {
  background: rgba(15, 82, 184, 0.06);
  color: var(--color-primary-dark);
}

.item-suggestion--active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.item-suggestions::-webkit-scrollbar {
  width: 8px;
}

.item-suggestions::-webkit-scrollbar-thumb {
  background: rgba(156, 163, 175, 0.55);
  border-radius: var(--radius-pill);
}

.item-suggestions::-webkit-scrollbar-track {
  background: transparent;
}

/* ==========================================================================
   11. CHECKBOXES
   ========================================================================== */

.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-4) 0 var(--space-6);
}

.checkbox-group {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-strong);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  height: auto;
}

/* ==========================================================================
   12. BUTTONS
   ========================================================================== */

button {
  min-height: var(--touch-target-min);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  line-height: 1;
  font-family: var(--font-family-base);
  cursor: pointer;
  transition: var(--transition-interactive);
}

.primary-btn,
.secondary-btn {
  width: 100%;
  min-height: var(--touch-target-min);
  padding: 0 20px;
}

.primary-btn {
  border: 1px solid transparent;
  color: #ffffff;
  background: linear-gradient(
    180deg,
    var(--color-primary-hover) 0%,
    var(--color-primary) 100%
  );
  box-shadow: var(--shadow-primary);
}

.primary-btn:hover {
  background: linear-gradient(
    180deg,
    #2b79ff 0%,
    var(--color-primary-dark) 100%
  );
}

.secondary-btn {
  margin-top: var(--space-3);
  border: 1px solid var(--color-border-strong);
  background: rgba(255, 255, 255, 0.78);
  color: var(--color-primary-dark);
  backdrop-filter: blur(8px);
}

.secondary-btn:hover {
  background: rgba(15, 82, 184, 0.06);
  border-color: rgba(15, 82, 184, 0.28);
  color: var(--color-primary);
}

.clear-btn {
  flex: 0 0 auto;
  width: auto;
  min-width: fit-content;
  min-height: var(--touch-target-min);
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--color-danger-solid);
  color: #ffffff;
  box-shadow: var(--shadow-danger);
}

.clear-btn:hover {
  background: var(--color-danger-solid-hover);
}

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

.remove-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--items-remove-width);
  min-width: var(--items-remove-width);
  height: var(--items-remove-width);
  min-height: var(--items-remove-width);
  padding: 0;
  border: 1px solid var(--color-danger-border);
  border-radius: var(--radius-pill);
  background: var(--color-danger-bg);
  box-shadow: none;
}

.remove-btn:hover {
  background: var(--color-danger-bg-hover);
  border-color: var(--color-danger-border-hover);
}

.remove-btn:active {
  transform: scale(0.97);
}

.form-actions {
  display: flex;
  align-items: stretch;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.form-actions .primary-btn {
  flex: 1;
  width: auto;
  margin: 0;
}

.primary-btn:disabled,
.secondary-btn:disabled,
.clear-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

.primary-btn:disabled {
  background: var(--color-border-strong);
  color: #ffffff;
}

.secondary-btn:disabled {
  background: var(--color-secondary-bg);
  border-color: var(--color-border);
  color: var(--color-text-muted);
}

.clear-btn:disabled {
  background: var(--color-danger-border-hover);
  color: #ffffff;
}

.primary-btn:disabled:hover,
.secondary-btn:disabled:hover,
.clear-btn:disabled:hover {
  background: inherit;
}

.remove-btn:disabled {
  background: var(--color-secondary-bg);
  border-color: var(--color-border);
  cursor: not-allowed;
  opacity: 0.6;
}

.remove-btn:disabled:hover {
  background: var(--color-secondary-bg);
  border-color: var(--color-border);
}

.trash-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
  pointer-events: none;
}

/* ==========================================================================
   13. FOCUS STATES
   ========================================================================== */

button:focus-visible,
.form-group input[type="text"]:focus-visible,
.form-group input[type="number"]:focus-visible,
.form-group input[type="datetime-local"]:focus-visible,
.form-group textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==========================================================================
   14. REPORTS AND TABLES
   ========================================================================== */

.report-card {
  margin-top: 20px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-table-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.report-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.report-card__header h2 {
  margin: 0;
  font-size: var(--font-size-base);
}

.report-card__controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.report-card__controls .input-with-clear {
  width: var(--report-search-width);
  flex: 0 0 var(--report-search-width);
}

.sales-report-date-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  min-width: 0;
  flex: 0 1 auto;
}

.date-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-target-compact);
  min-width: var(--touch-target-compact);
  min-height: var(--touch-target-compact);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-strong);
  font-size: var(--font-size-base);
  line-height: 1;
}

.date-nav-btn:hover {
  background: var(--color-secondary-bg);
  border-color: var(--color-border-strong);
}

.sales-report-date-picker-wrap {
  min-width: 0;
  flex: 0 1 var(--report-date-width);
}

.sales-report-date-input,
.inventory-report-search {
  width: 100%;
  min-width: 0;
  min-height: var(--field-height);
  padding: 0 var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.sales-report-date-input {
  min-height: var(--touch-target-compact);
  padding: 0 0.85rem;
  font-size: var(--font-size-sm);
}

.inventory-report-search::placeholder {
  color: var(--color-text-muted);
}

.sales-report-date-input:focus,
.inventory-report-search:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.inventory-report-status {
  margin-bottom: 12px;
  color: #5b6475;
  font-size: 0.92rem;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.78);
}

.table-wrap--loading {
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.sales-report-table {
  min-width: var(--report-sales-table-min-width);
}

.inventory-report-table {
  width: 100%;
  min-width: var(--report-inventory-table-min-width);
  border-collapse: collapse;
}

.inventory-report-table th,
.inventory-report-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-table-border);
  font-size: var(--font-size-table);
}

.inventory-report-table th {
  background: var(--color-table-head);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.inventory-report-table tbody tr:hover {
  background: var(--color-table-hover);
}

.inventory-report-table tbody tr.inventory-report-row--out {
  background: var(--color-stock-out);
}

.inventory-report-table tbody tr.inventory-report-row--out:hover {
  background: var(--color-stock-out-hover);
}

.sales-report-cell-main {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-strong);
}

.sales-report-cell-sub {
  margin-top: 2px;
  font-size: var(--font-size-table-sub);
  color: var(--color-text-muted);
}

.sales-report-paid-btn,
.sales-report-refund-btn {
  min-height: 36px;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-strong);
  font-size: var(--font-size-table);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.sales-report-paid-btn:hover,
.sales-report-refund-btn:hover {
  background: var(--color-secondary-bg);
  border-color: var(--color-border-strong);
}

.sales-report-paid-btn--active {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-soft-border);
  color: var(--color-primary);
}

.sales-report-row--refunded {
  opacity: 0.72;
  background: var(--color-refunded);
}

.sales-report-refund-btn:disabled,
.sales-report-paid-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.sales-qty-control {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.sales-qty-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  min-width: 32px;
  height: 32px;
  min-height: 32px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-qty-btn);
  background: var(--color-surface);
  color: var(--color-text-strong);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  white-space: nowrap;
  transition: var(--transition-interactive);
}

.sales-qty-btn:hover {
  background: var(--color-secondary-bg);
  border-color: var(--color-border-strong);
  color: var(--color-text-strong);
}

.sales-qty-btn:active {
  transform: scale(0.97);
}

.sales-qty-btn:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.sales-qty-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--color-secondary-bg);
  border-color: var(--color-border);
  color: var(--color-text-muted);
  transform: none;
}

.sales-qty-value {
  min-width: 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-strong);
  text-align: left;
}

.inventory-refresh-btn {
  width: auto;
  min-width: 120px;
  flex: 0 0 auto;
  margin: 0;
  padding: 0 var(--space-5);
}

.inventory-refresh-btn:disabled {
  opacity: 0.8;
  cursor: wait;
}

/* ==========================================================================
   15. PROGRESSIVE ENHANCEMENT FALLBACK
   ========================================================================== */

@supports not (
  (-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))
) {
  .sales-form,
  .page-panel {
    background: var(--color-panel-solid);
  }

  .nav-panel__inner {
    background: var(--color-nav-solid);
  }
}

/* ==========================================================================
   16. RESPONSIVE: DESKTOP AND MOBILE
   Desktop: above 860px
   Mobile: 860px and below
   ========================================================================== */

@media (hover: hover) and (pointer: fine) {
  body.is-submitting,
  body.is-submitting * {
    cursor: wait !important;
  }
}

@media (min-width: 861px) {
  .sales-form,
  .page-panel,
  .nav-panel__inner {
    padding: 28px;
  }
}

@media (max-width: 860px) {
  body {
    padding: var(--page-padding-mobile);
    line-height: 1.58;
  }

  .app-shell {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    width: 100%;
  }

  .nav-panel {
    position: static;
  }

  .sales-form,
  .page-panel,
  .nav-panel__inner {
    padding: var(--space-4);
  }

  .app-shell,
  .container,
  .app-view,
  .page-panel,
  .report-card,
  .report-card__header,
  .report-card__controls,
  .form-header {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .nav-panel__title {
    margin-bottom: var(--space-3);
    text-align: center;
  }

  .nav-menu {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
  }

  .nav-button {
    justify-content: center;
    text-align: center;
    padding: 0.85rem 0.75rem;
    font-size: var(--font-size-sm);
  }

  .form-header {
    margin-bottom: var(--space-5);
    overflow: hidden;
  }

  .form-header h1 {
    font-size: var(--font-size-title-mobile);
    line-height: var(--line-height-tight);
    word-break: break-word;
  }

  .form-header p {
    font-size: var(--font-size-sm);
    line-height: 1.4;
    word-break: break-word;
  }

  .form-row {
    flex-direction: column;
    align-items: stretch;
  }

  #itemsContainer {
    padding: 12px;
  }

  .item-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(92px, 0.7fr) var(
        --items-remove-width-mobile
      );
    gap: 12px;
    align-items: end;
    padding: 12px 0;
  }

  .item-autocomplete {
    grid-column: 1 / -1;
    width: 100%;
  }

  .item-input,
  .quantity-input,
  .price-input {
    width: 100%;
    min-width: 0;
  }

  .remove-btn {
    width: var(--items-remove-width-mobile);
    min-width: var(--items-remove-width-mobile);
    height: var(--items-remove-width-mobile);
    min-height: var(--items-remove-width-mobile);
  }

  .checkbox-row {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .primary-btn,
  .form-actions .clear-btn {
    width: 100%;
  }

  .primary-btn,
  .secondary-btn,
  .clear-btn {
    padding: 0 16px;
  }

  .report-card {
    margin-top: var(--space-4);
    padding: var(--space-4);
    overflow: hidden;
  }

  .report-card__header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
  }

  .report-card__header h2 {
    font-size: var(--font-size-base);
    line-height: var(--line-height-compact);
    word-break: break-word;
  }

  .report-card__controls {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-2);
  }

  .report-card__controls .input-with-clear,
  .inventory-report-search,
  .inventory-refresh-btn {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    flex: 0 0 auto;
    margin: 0;
  }

  .inventory-refresh-btn {
    padding: 0 1rem;
    align-self: stretch;
  }

  .sales-report-date-nav {
    width: 100%;
    flex-wrap: nowrap;
    justify-content: space-between;
  }

  .sales-report-date-picker-wrap {
    flex: 1 1 auto;
    min-width: 0;
  }

  .date-nav-btn {
    width: 44px;
    min-width: 44px;
  }

  .sales-report-date-input {
    width: 100%;
    min-width: 0;
  }

  .table-wrap {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
  }

  .sales-report-table {
    width: max-content;
    min-width: var(--report-sales-table-min-width);
  }

  .inventory-report-table {
    width: max-content;
    min-width: var(--report-inventory-table-min-width);
  }

  .form-group input[type="text"],
  .form-group input[type="number"],
  .form-group input[type="datetime-local"],
  .remove-btn,
  .primary-btn,
  .secondary-btn,
  .nav-button {
    min-height: var(--field-height-mobile);
  }
}