/* ================================================================
   QuickBooks Mobile Experience — Global responsive enhancements
   Load AFTER style.css and quickbooks-readability-fixes.css
   Desktop styles remain unchanged above 1024px.
   ================================================================ */

:root {
  --mobile-touch: 44px;
  --mobile-padding: 16px;
  --mobile-gap: 12px;
  --mobile-radius: 8px;
  --mobile-bar-height: 56px;
}

/* ── Foundation ───────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

.app-layout {
  min-height: 100dvh;
}

.main-content {
  min-width: 0;
}

.page-content {
  min-width: 0;
}

/* Accessibility */
.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;
}

/* Touch-friendly interactions */
button,
.btn,
.nav-item,
.sidebar-toggle,
.modal-close,
a.btn {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
.btn:focus-visible,
.nav-item:focus-visible,
.sidebar-toggle:focus-visible,
.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible,
.search-bar:focus-visible {
  outline: 2px solid var(--qb-accent, #0077C5);
  outline-offset: 2px;
}

/* Lazy-load hint for images site-wide */
img[loading="lazy"] {
  content-visibility: auto;
}

img {
  height: auto;
  max-width: 100%;
}

/* ── Sidebar & navigation (≤1024px) ─────────────────────────── */
@media (max-width: 1024px) {
  .sidebar {
    z-index: 110;
  }

  .sidebar-backdrop {
    z-index: 105;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }

  .nav-item {
    min-height: var(--mobile-touch);
    padding: 12px 14px;
    font-size: 1rem;
  }

  .nav-section-label {
    padding: 16px 8px 8px;
    font-size: 0.6875rem;
  }

  .sidebar-footer .logout-btn {
    min-height: var(--mobile-touch);
    padding: 12px 14px;
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 60;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  }

  .sidebar-toggle {
    border-radius: var(--mobile-radius);
    transition: background 0.15s ease, border-color 0.15s ease;
  }

  .sidebar-toggle:active {
    background: #F3F4F6;
  }

  .topbar-search .search-bar {
    min-height: var(--mobile-touch);
  }
}

/* ── Cards & spacing (≤768px) ───────────────────────────────── */
@media (max-width: 768px) {
  .page-content {
    padding: var(--mobile-padding);
    padding-bottom: max(var(--mobile-padding), env(safe-area-inset-bottom));
  }

  .card,
  .form-card,
  .stat-card,
  .table-wrapper,
  .totals-box {
    border-radius: var(--mobile-radius);
    margin-bottom: var(--mobile-gap);
  }

  .card .flex.gap-10.flex-wrap > .btn,
  .card .flex.gap-10 > .btn {
    flex: 1 1 100%;
    width: 100%;
    justify-content: center;
  }

  .stats-grid {
    gap: var(--mobile-gap);
  }

  .stat-card {
    padding: 16px;
  }

  .stat-icon {
    width: 44px;
    height: 44px;
    font-size: 1.25rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .dashboard-recent-grid {
    gap: var(--mobile-gap) !important;
  }

  .chart-panel {
    height: 220px !important;
    min-height: 180px;
  }

  /* Form layouts */
  .form-row.cols-2,
  .form-row.cols-3,
  .form-row.cols-4,
  .form-row.cols-5 {
    grid-template-columns: 1fr;
    gap: var(--mobile-gap);
  }

  .form-group label {
    margin-bottom: 6px;
    line-height: 1.4;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    width: 100%;
    min-height: var(--mobile-touch);
  }

  .form-card .form-group.flex {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: var(--mobile-gap) !important;
  }

  .form-card .form-group.flex > div {
    width: 100% !important;
    flex: none !important;
  }

  .form-card .form-group.flex .btn {
    width: 100%;
    justify-content: center;
  }

  /* Document editor — stack sidebar below content */
  .doc-editor-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--mobile-gap) !important;
  }

  .doc-editor-grid > div {
    width: 100% !important;
    min-width: 0 !important;
  }

  .totals-row {
    flex-wrap: wrap;
    gap: 8px;
  }

  .totals-row input {
    width: 100% !important;
    max-width: 100%;
    flex: 1 1 100%;
    min-height: var(--mobile-touch);
  }

  .line-items-section .section-header .btn {
    width: 100%;
    justify-content: center;
  }

  .line-items-footer .btn {
    width: 100%;
    justify-content: center;
  }

  /* Filter forms */
  .filter-form .filter-actions-row {
    flex-direction: column;
    gap: var(--mobile-gap);
  }

  .filter-form .filter-actions {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .filter-form .filter-actions .btn,
  .filter-form .btn {
    width: 100%;
    justify-content: center;
  }

  .report-filter {
    gap: var(--mobile-gap) !important;
  }

  .report-filter .flex.gap-10 {
    flex-direction: column;
    width: 100%;
  }

  .report-filter .flex.gap-10 .btn {
    width: 100%;
    flex: none;
  }

  /* Topbar actions */
  .topbar-actions {
    width: 100%;
    order: 4;
    justify-content: stretch;
    gap: 8px;
  }

  .topbar-actions .btn {
    flex: 1 1 auto;
    justify-content: center;
    min-height: var(--mobile-touch);
  }

  /* Table header */
  .table-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--mobile-gap);
  }

  .table-header > .flex {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .table-header .search-bar {
    width: 100%;
    min-height: var(--mobile-touch);
  }

  /* Buttons — equal height, full width where stacked */
  .btn {
    min-height: var(--mobile-touch);
    justify-content: center;
  }

  .btn-sm {
    min-height: var(--mobile-touch);
  }

  .data-table .actions .btn {
    min-height: var(--mobile-touch);
    flex: 1 1 calc(50% - 4px);
    justify-content: center;
  }
}

/* ── Small phones (≤480px) ──────────────────────────────────── */
@media (max-width: 480px) {
  .topbar-title {
    font-size: 1rem;
    line-height: 1.3;
  }

  .topbar-actions .btn {
    font-size: 0.875rem;
    padding: 10px 12px;
  }

  .page-content {
    padding: 12px;
  }

  .card,
  .form-card {
    padding: 16px !important;
  }

  .table-header h2 {
    font-size: 1rem;
  }

  .empty-state {
    padding: 32px 16px;
  }

  .empty-state .icon {
    font-size: 2.5rem;
  }
}

/* ── Extra-small (≤360px) ───────────────────────────────────── */
@media (max-width: 360px) {
  .page-content {
    padding: 10px;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  .topbar {
    padding: 10px;
    gap: 8px;
  }
}

/* ── Tablet landscape (769px–1024px) ─────────────────────────── */
@media (min-width: 769px) and (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dashboard-recent-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ── Responsive table cards (≤768px) ─────────────────────────── */
@media (max-width: 768px) {
  .table-wrapper.is-mobile-cards-mode {
    overflow: visible !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
  }

  .table-wrapper.is-mobile-cards-mode .table-header {
    background: var(--qb-bg-card, #fff) !important;
    border: 1px solid var(--qb-border, #E5E7EB) !important;
    border-radius: var(--mobile-radius) !important;
    margin-bottom: var(--mobile-gap);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
  }

  .table-wrapper.is-mobile-cards-mode .data-table {
    min-width: 0 !important;
    border-collapse: separate;
    border-spacing: 0 12px;
  }

  .table-wrapper.is-mobile-cards-mode .data-table thead {
    display: none;
  }

  .table-wrapper.is-mobile-cards-mode .data-table tbody tr {
    display: block;
    background: var(--qb-bg-card, #fff);
    border: 1px solid var(--qb-border, #E5E7EB);
    border-radius: var(--mobile-radius);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: 4px 16px 12px;
    margin-bottom: 0;
  }

  .table-wrapper.is-mobile-cards-mode .data-table tbody tr.clickable-row {
    cursor: pointer;
    transition: box-shadow 0.15s ease, border-color 0.15s ease;
  }

  .table-wrapper.is-mobile-cards-mode .data-table tbody tr.clickable-row:active {
    border-color: var(--qb-accent, #0077C5);
    box-shadow: 0 2px 8px rgba(0, 119, 197, 0.12);
  }

  .table-wrapper.is-mobile-cards-mode .data-table tbody tr:hover td {
    background: transparent !important;
  }

  .table-wrapper.is-mobile-cards-mode .data-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 10px 0 !important;
    border-bottom: 1px solid var(--qb-border, #E5E7EB) !important;
    white-space: normal !important;
    word-break: normal !important;
    overflow-wrap: anywhere !important;
    font-size: 0.9375rem !important;
    min-width: 0 !important;
  }

  .table-wrapper.is-mobile-cards-mode .data-table td:last-child {
    border-bottom: none !important;
    padding-bottom: 4px !important;
  }

  .table-wrapper.is-mobile-cards-mode .data-table td::before {
    content: attr(data-label);
    font-weight: 600;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--qb-text-secondary, #4B5563);
    flex: 0 0 42%;
    min-width: 0;
    line-height: 1.4;
  }

  .table-wrapper.is-mobile-cards-mode .data-table td.actions {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding-top: 12px !important;
  }

  .table-wrapper.is-mobile-cards-mode .data-table td.actions::before {
    align-self: flex-start;
    margin-bottom: 2px;
  }

  .table-wrapper.is-mobile-cards-mode .data-table td.actions .btn {
    width: 100% !important;
    flex: none;
    margin-bottom: 0;
  }

  /* Hide redundant edit on card rows — tap row to edit */
  .table-wrapper.is-mobile-cards-mode .data-table td.actions a[href*="edit="] {
    display: none !important;
  }

  /* Empty / colspan rows */
  .table-wrapper.is-mobile-cards-mode .data-table tr:has(.empty-state),
  .table-wrapper.is-mobile-cards-mode .data-table tr td[colspan] {
    display: block;
    padding: 0 !important;
    border: 1px solid var(--qb-border, #E5E7EB) !important;
    border-radius: var(--mobile-radius);
    background: var(--qb-bg-card, #fff);
  }

  .table-wrapper.is-mobile-cards-mode .data-table tr td[colspan]::before,
  .table-wrapper.is-mobile-cards-mode .data-table tr:has(.empty-state) td::before {
    display: none;
  }
}

/* ── Horizontal scroll tables with sticky header (line items) ─── */
@media (max-width: 1024px) {
  .table-wrapper:not(.is-mobile-cards-mode) {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .table-wrapper:not(.is-mobile-cards-mode) .data-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: #F9FAFB;
  }

  .line-items-section {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .line-items-section .line-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: #F9FAFB;
  }
}

/* ── Modals ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .modal-overlay {
    align-items: flex-end;
    padding: 0;
    overflow: hidden;
  }

  .modal-overlay.active {
    display: flex;
  }

  body.modal-open {
    overflow: hidden;
  }

  .modal-content {
    width: 100% !important;
    max-width: 100% !important;
    max-height: 92dvh;
    margin: 0;
    border-radius: 16px 16px 0 0 !important;
    padding: 20px 16px max(20px, env(safe-area-inset-bottom)) !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalSlideUp 0.25s ease-out forwards;
  }

  @keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(100%); }
    to { opacity: 1; transform: translateY(0); }
  }

  .modal-content > h3 {
    flex-shrink: 0;
    padding-right: 40px;
    font-size: 1.125rem;
    margin-bottom: 16px;
  }

  .modal-content > .form-group,
  .modal-content > .form-row {
    flex-shrink: 0;
  }

  .modal-scroll-body {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    min-height: 0;
    margin: 0 -4px;
    padding: 0 4px;
  }

  .modal-footer-sticky {
    flex-shrink: 0;
    padding-top: 16px;
    margin-top: auto;
    border-top: 1px solid var(--qb-border, #E5E7EB);
  }

  .modal-footer-sticky .btn {
    width: 100%;
    justify-content: center;
  }

  .modal-close {
    top: 12px;
    right: 12px;
    z-index: 2;
    background: #F3F4F6;
  }
}

/* ── Mobile sticky form action bar ───────────────────────────── */
.mobile-form-bar {
  display: none;
}

@media (max-width: 768px) {
  .mobile-form-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 55;
    background: var(--qb-bg-card, #fff);
    border-top: 1px solid var(--qb-border, #E5E7EB);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
    padding: 10px var(--mobile-padding);
    padding-bottom: max(10px, env(safe-area-inset-bottom));
    gap: 10px;
  }

  body.has-mobile-form-bar .page-content {
    padding-bottom: calc(72px + env(safe-area-inset-bottom));
  }

  .mobile-form-bar-inner {
    display: flex;
    gap: 10px;
    width: 100%;
    max-width: 100%;
  }

  .mobile-form-bar .btn {
    flex: 1;
    justify-content: center;
    min-height: var(--mobile-touch);
  }

  .mobile-form-bar .btn-secondary {
    flex: 0 0 auto;
    min-width: 88px;
  }
}

/* ── Login page ──────────────────────────────────────────────── */
@media (max-width: 480px) {
  body:has(.login-card) {
    padding: 16px;
    align-items: flex-start !important;
    min-height: 100dvh;
  }

  .login-card {
    margin-top: env(safe-area-inset-top);
    border-radius: var(--mobile-radius) !important;
  }

  .btn-login {
    min-height: var(--mobile-touch);
    font-size: 1rem;
  }
}

/* ── Scroll hint for wide tables ─────────────────────────────── */
@media (max-width: 1024px) {
  .line-items-section::after,
  .table-wrapper:not(.is-mobile-cards-mode)::after {
    content: '';
    display: block;
    height: 0;
  }

  .scroll-hint {
    font-size: 0.75rem;
    color: var(--qb-text-muted, #6B7280);
    text-align: center;
    padding: 8px 0 0;
    display: none;
  }

  .table-wrapper:not(.is-mobile-cards-mode) .scroll-hint,
  .line-items-section .scroll-hint {
    display: block;
  }
}

/* ── Simple form pages (change password, settings, etc.) ─────── */
@media (max-width: 768px) {
  .form-card form > .btn,
  .form-card form > a.btn,
  .form-card form > div .btn,
  .form-card form > div a.btn {
    width: 100%;
    justify-content: center;
    margin-left: 0 !important;
  }

  .form-card form > .btn + .btn,
  .form-card form > .btn + a.btn,
  .form-card form > a.btn + .btn,
  .form-card form > a.btn + a.btn {
    margin-top: 10px;
  }

  .form-card form .flex.gap-10 {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .form-card form .flex.gap-10 .btn,
  .form-card form .flex.gap-10 a.btn {
    width: 100%;
  }
}

/* ── Document editor: hide duplicate sidebar actions on mobile ── */
@media (max-width: 768px) {
  body.has-mobile-form-bar .doc-editor-grid > div:last-child > .card:has(button[type="submit"]) {
    display: none;
  }
}

/* ── QuickBooks email review layout ───────────────────────────── */
@media (max-width: 768px) {
  .qb-layout {
    grid-template-columns: 1fr !important;
    min-height: auto;
    border-radius: var(--mobile-radius);
  }

  .qb-preview-panel {
    display: none !important;
  }

  .qb-form-panel {
    border-right: none !important;
    padding: 20px 16px !important;
    max-width: 100% !important;
  }

  .qb-field {
    grid-template-columns: 1fr !important;
    gap: 6px;
    margin-bottom: 16px;
  }

  .qb-field label {
    white-space: normal;
  }

  .qb-field input,
  .qb-field textarea {
    min-height: var(--mobile-touch);
    font-size: 16px;
  }

  .qb-copy-row,
  .qb-pdf-note {
    margin-left: 0 !important;
    flex-wrap: wrap !important;
  }

  .qb-bottom-bar {
    flex-direction: column-reverse;
    align-items: stretch;
    gap: 10px;
    padding: 14px 16px;
    padding-bottom: max(14px, env(safe-area-inset-bottom));
  }

  .qb-bottom-bar .btn,
  .btn-send-est {
    width: 100%;
    justify-content: center;
    min-height: var(--mobile-touch);
  }
}

/* ── Charts ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .chart-panel {
    position: relative;
    width: 100%;
    min-width: 0;
  }

  .chart-panel canvas {
    max-width: 100%;
  }
}

/* ── Phase 1: Touch Ergonomics (Audit Remediation) ────────────── */
@media (max-width: 768px) {
  .btn-sm, 
  .table-wrapper .actions .btn {
    min-height: 44px;
    min-width: 44px;
    padding: 10px 16px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9rem;
  }
  .table-wrapper .actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }
}

/* ── Phase 4: Responsive Data Tables (Card Stacking) ──────────── */
@media (max-width: 768px) {
  .data-table { border: 0 !important; }
  .data-table thead { display: none; }
  .data-table tbody, .data-table tr, .data-table td {
    display: block;
    width: 100%;
  }
  .data-table tr {
    margin-bottom: 15px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    background: var(--bg-card);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  }
  .data-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: none;
    padding: 8px 0;
    text-align: right;
  }
  .data-table td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--text-muted);
    text-align: left;
    margin-right: 15px;
  }
  .data-table td.actions {
    justify-content: flex-end;
    margin-top: 10px;
    border-top: 1px dashed var(--border-light);
    padding-top: 14px;
  }
}

/* ── Phase 5: Sticky Action Bars ──────────────────────────────── */
@media (max-width: 768px) {
  .form-actions-bar {
    position: sticky;
    bottom: 0;
    background: var(--bg-card, #ffffff);
    padding: 16px;
    margin: 0 -16px -16px -16px; /* Negate card padding */
    box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
    z-index: 100;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    border-top: 1px solid var(--border);
  }
  .form-actions-bar .btn {
    flex: 1 1 auto;
    min-width: 120px;
  }
}