/* ==========================================================================
   KQXS.PRO - Modern Web Standards CSS
   Applies: dark-mode, dark-mode-toggle, responsive-table,
            prevent-page-scroll-under-modal-dialog, light-dismiss-a-dialog, switch
   ========================================================================== */

:root {
  /* Raw Light / Dark Color Tokens */
  --bg-page-light: #f8fafc;
  --bg-page-dark: #0b1120;

  --bg-surface-light: #ffffff;
  --bg-surface-dark: #111827;

  --bg-elevated-light: #f1f5f9;
  --bg-elevated-dark: #1e293b;

  --text-primary-light: #0f172a;
  --text-primary-dark: #f8fafc;

  --text-secondary-light: #475569;
  --text-secondary-dark: #94a3b8;

  --border-subtle-light: #e2e8f0;
  --border-subtle-dark: #334155;

  --brand-primary-light: #c81e1e;
  --brand-primary-dark: #f87171;

  --brand-gold-light: #b45309;
  --brand-gold-dark: #fbbf24;

  --success-bg-light: #ecfdf5;
  --success-bg-dark: #064e3b;
  --success-text-light: #047857;
  --success-text-dark: #6ee7b7;

  --warning-bg-light: #fffbeb;
  --warning-bg-dark: #451a03;
  --warning-text-light: #b45309;
  --warning-text-dark: #fcd34d;

  --scrollbar-track-light: #e2e8f0;
  --scrollbar-track-dark: #1e293b;
  --scrollbar-thumb-light: #94a3b8;
  --scrollbar-thumb-dark: #475569;

  /* Default (Light) assignments for fallback browsers without light-dark() */
  --bg-page: var(--bg-page-light);
  --bg-surface: var(--bg-surface-light);
  --bg-elevated: var(--bg-elevated-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --border-subtle: var(--border-subtle-light);
  --color-brand: var(--brand-primary-light);
  --color-gold: var(--brand-gold-light);
  --success-bg: var(--success-bg-light);
  --success-text: var(--success-text-light);
  --warning-bg: var(--warning-bg-light);
  --warning-text: var(--warning-text-light);
  --scrollbar-track: var(--scrollbar-track-light);
  --scrollbar-thumb: var(--scrollbar-thumb-light);

  /* Typography scale (supports Senior / Large Text mode) */
  --font-scale: 1;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* MANDATORY: Automatically adapt native UI to user system preferences */
  color-scheme: light dark;

  /* Map <meta name="color-scheme"> override back to CSS property */
  &:has(> head > meta[name="color-scheme"][content="dark"]) {
    color-scheme: dark;
  }
  &:has(> head > meta[name="color-scheme"][content="light"]) {
    color-scheme: light;
  }

  /* MANDATORY: Fallback for browsers without light-dark() support */
  @media (prefers-color-scheme: dark) {
    --bg-page: var(--bg-page-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-elevated: var(--bg-elevated-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-subtle: var(--border-subtle-dark);
    --color-brand: var(--brand-primary-dark);
    --color-gold: var(--brand-gold-dark);
    --success-bg: var(--success-bg-dark);
    --success-text: var(--success-text-dark);
    --warning-bg: var(--warning-bg-dark);
    --warning-text: var(--warning-text-dark);
    --scrollbar-track: var(--scrollbar-track-dark);
    --scrollbar-thumb: var(--scrollbar-thumb-dark);
  }

  /* Modern light-dark() color adaptation */
  @supports (color: light-dark(white, black)) {
    --bg-page: light-dark(var(--bg-page-light), var(--bg-page-dark));
    --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
    --bg-elevated: light-dark(var(--bg-elevated-light), var(--bg-elevated-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
    --border-subtle: light-dark(var(--border-subtle-light), var(--border-subtle-dark));
    --color-brand: light-dark(var(--brand-primary-light), var(--brand-primary-dark));
    --color-gold: light-dark(var(--brand-gold-light), var(--brand-gold-dark));
    --success-bg: light-dark(var(--success-bg-light), var(--success-bg-dark));
    --success-text: light-dark(var(--success-text-light), var(--success-text-dark));
    --warning-bg: light-dark(var(--warning-bg-light), var(--warning-bg-dark));
    --warning-text: light-dark(var(--warning-text-light), var(--warning-text-dark));
    --scrollbar-track: light-dark(var(--scrollbar-track-light), var(--scrollbar-track-dark));
    --scrollbar-thumb: light-dark(var(--scrollbar-thumb-light), var(--scrollbar-thumb-dark));
  }

  accent-color: var(--color-brand);
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  scrollbar-width: thin;
}

/* Legacy fallback for WebKit/Blink browsers without scrollbar-color */
@supports not (scrollbar-color: auto) {
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
  }
  ::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
  }
}

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

html {
  font-size: calc(16px * var(--font-scale));
  scroll-behavior: smooth;
  overflow-x: clip;
  max-inline-size: 100%;
}

html[data-senior-mode="true"] {
  --font-scale: 1.18;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: clip;
  max-inline-size: 100%;
}

/* Guide: improve-text-layout-and-legibility */
h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
}

p, blockquote, li {
  text-wrap: pretty;
}

/* Native Switch Control Styling (Guide: switch) */
input[type="checkbox"][switch] {
  accent-color: var(--color-brand, #c81e1e);
  margin: 0;
  cursor: pointer;
  inline-size: 1.25rem;
  block-size: 1.25rem;
}

input[type="checkbox"][switch]:focus-visible {
  outline: 3px solid var(--color-gold, #ff8c00);
  outline-offset: 4px;
}

/* Modal Dialog Scroll Containment & Backdrop (Guides: prevent-page-scroll-under-modal-dialog, light-dismiss-a-dialog) */
dialog {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 0;
  max-inline-size: min(760px, 94vw);
  inline-size: 100%;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
}

dialog:modal {
  /* MANDATORY: Prevent scroll gestures inside the modal from chaining to the underlying page */
  overscroll-behavior: contain;
}

dialog::backdrop {
  /* MANDATORY: ::backdrop defaults to overflow: visible (not a scroll container).
     Set overflow: hidden so it becomes a non-scrollable scroll container that honors overscroll-behavior. */
  overflow: hidden;
  overscroll-behavior: contain;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(3px);
}

.dialog-inner {
  padding: 1.25rem 1.5rem;
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block-end: 0.85rem;
  border-block-end: 1px solid var(--border-subtle);
  margin-block-end: 1rem;
}

.dialog-header h2 {
  margin: 0;
  font-size: 1.2rem;
}

/* Popover styling with polyfill support (Guide: declarative-dialog-popover-control) */
[popover] {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 1rem;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  max-inline-size: 340px;
}

[popover]:is(:popover-open, .\:popover-open) {
  display: block;
}

/* Header & Navigation Bar */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 30;
  background: var(--bg-surface);
  border-block-end: 1px solid var(--border-subtle);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.header-inner {
  max-inline-size: 1280px;
  margin-inline: auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: inherit;
}

.brand-badge {
  background: linear-gradient(135deg, #dc2626, #991b1b);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  padding: 0.45rem 0.7rem;
  border-radius: 10px;
  letter-spacing: 0.5px;
}

.brand-title {
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.header-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.switch-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 0.95rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  transition: transform 0.1s ease, background-color 0.15s ease;
}

.btn:hover {
  background: var(--bg-elevated);
}

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

.btn-primary {
  background: #c81e1e;
  color: #ffffff;
  border-color: #b91c1c;
}

.btn-primary:hover {
  background: #b91c1c;
}

.btn-gold {
  background: #d97706;
  color: #ffffff;
  border-color: #b45309;
}

.btn-gold:hover {
  background: #b45309;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

/* Main Layout */
.app-container {
  max-inline-size: 1280px;
  margin-inline: auto;
  padding: 1.25rem 1rem 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

.left-column,
.right-column {
  min-inline-size: 0;
  max-inline-size: 100%;
}

@media (min-width: 1024px) {
  .app-container {
    grid-template-columns: 400px minmax(0, 1fr);
    align-items: start;
  }
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  min-inline-size: 0;
  max-inline-size: 100%;
}

.card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-block-end: 0.9rem;
}

.card-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--bg-elevated);
  color: var(--text-secondary);
}

.badge-live {
  background: #fee2e2;
  color: #b91c1c;
}

/* Zero-Miss Ticket Checker Widget */
.checker-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-row {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
  gap: 0.6rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-inline-size: 0;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.form-control {
  inline-size: 100%;
  min-inline-size: 0;
  max-inline-size: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  text-overflow: ellipsis;
}

.ticket-input-large {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 2px;
  font-variant-numeric: tabular-nums;
}

.quick-demo-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  font-size: 0.76rem;
  padding: 0.25rem 0.55rem;
  border-radius: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
}

.chip:hover {
  border-color: var(--color-brand);
}

/* Evaluation Results Cards */
.eval-result-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-block-start: 1rem;
}

.eval-card {
  border-radius: var(--radius-md);
  padding: 0.9rem;
  border: 2px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.eval-card.is-winner {
  background: var(--success-bg);
  border-color: var(--success-text);
}

.eval-card.is-nearmiss {
  background: var(--warning-bg);
  border-color: var(--warning-text);
}

.eval-ticket-num {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 2px;
  font-variant-numeric: tabular-nums;
}

.prize-pill {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: #c81e1e;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  margin-block: 0.35rem;
}

.tax-breakdown {
  margin-block-start: 0.5rem;
  padding-block-start: 0.5rem;
  border-block-start: 1px dashed var(--border-subtle);
  font-size: 0.84rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.4rem;
}

/* Ticket Wallet (Ví Vé Chờ Mở Thưởng) */
.wallet-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-block-start: 0.75rem;
}

.wallet-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
}

.wallet-item.matched-live {
  border: 2px solid #dc2626;
  background: var(--success-bg);
  animation: pulseHighlight 1.2s ease-in-out infinite alternate;
}

@keyframes pulseHighlight {
  from {
    box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.35);
  }
  to {
    box-shadow: 0 0 0 6px rgba(220, 38, 38, 0);
  }
}

/* Navigation Tabs for Right Column */
.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-block-end: 1rem;
  border-block-end: 1px solid var(--border-subtle);
  padding-block-end: 0.65rem;
}

.tab-btn {
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
}

.tab-btn[aria-selected="true"] {
  background: var(--color-brand);
  color: #fff;
}

/* Responsive Data Table (Guide: responsive-table) */
.table-wrapper {
  overflow: auto;
  max-inline-size: 100%;
  max-block-size: min(640px, 82vh);
  container-type: inline-size;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

table {
  border-collapse: separate;
  border-spacing: 0;
  inline-size: 100%;
  background: var(--bg-surface);
}

caption {
  padding: 0.65rem 0.9rem;
  font-weight: 700;
  text-align: start;
  background: var(--bg-elevated);
  border-block-end: 1px solid var(--border-subtle);
}

/* Sticky column headers (desktop) */
thead {
  position: sticky;
  inset-block-start: 0;
  z-index: 1;
}

thead th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  padding: 0.65rem 0.75rem;
  font-weight: 700;
  border-block-end: 2px solid var(--border-subtle);
  border-inline-end: 1px solid var(--border-subtle);
  text-align: center;
}

/* Sticky row headers (desktop) */
tbody th {
  position: sticky;
  inset-inline-start: 0;
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-weight: 700;
  padding: 0.6rem 0.75rem;
  border-block-end: 1px solid var(--border-subtle);
  border-inline-end: 1px solid var(--border-subtle);
  white-space: nowrap;
  text-align: start;
}

tbody td {
  padding: 0.6rem 0.75rem;
  border-block-end: 1px solid var(--border-subtle);
  border-inline-end: 1px solid var(--border-subtle);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* Responsive Stacked Layout for Data Tables under 600px container width (Guide: responsive-table) */
@container (width < 600px) {
  table.stacked-responsive-table,
  table.stacked-responsive-table thead,
  table.stacked-responsive-table tbody,
  table.stacked-responsive-table tr,
  table.stacked-responsive-table th,
  table.stacked-responsive-table td {
    display: block;
  }

  table.stacked-responsive-table thead {
    /* MANDATORY: Hide column header from layout and screen readers. */
    display: none;
  }

  table.stacked-responsive-table tr {
    margin-block-end: 1rem;
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    overflow: hidden;
  }

  /* Sticky row headers at the top of each block/card */
  table.stacked-responsive-table tbody th {
    position: sticky;
    inset-block-start: 0;
    z-index: 2;
    background: var(--bg-elevated);
    color: var(--text-primary);
  }

  table.stacked-responsive-table td {
    text-align: start;
  }

  /* Inject labels */
  table.stacked-responsive-table td:nth-child(2)::before {
    content: var(--label-2) ": ";
    font-weight: 700;
    color: var(--text-secondary);
  }

  table.stacked-responsive-table td:nth-child(3)::before {
    content: var(--label-3) ": ";
    font-weight: 700;
    color: var(--text-secondary);
  }

  table.stacked-responsive-table td:nth-child(4)::before {
    content: var(--label-4) ": ";
    font-weight: 700;
    color: var(--text-secondary);
  }

  table.stacked-responsive-table td:nth-child(5)::before {
    content: var(--label-5) ": ";
    font-weight: 700;
    color: var(--text-secondary);
  }
}

/* ==========================================================================
   B2B Agents & Gold Shops Directory Table (Danh sách Đại lý Vé số & Tiệm vàng)
   ========================================================================== */
.agents-table-wrapper {
  max-block-size: none;
  overflow-x: auto;
}

table.agents-directory-table {
  table-layout: fixed;
  inline-size: 100%;
}

table.agents-directory-table thead th {
  text-align: start;
  padding: 0.75rem 0.9rem;
  font-size: 0.88rem;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

table.agents-directory-table thead th:nth-child(1) {
  inline-size: 27%;
}

table.agents-directory-table thead th:nth-child(2) {
  inline-size: 26%;
}

table.agents-directory-table thead th:nth-child(3) {
  inline-size: 21%;
}

table.agents-directory-table thead th:nth-child(4) {
  inline-size: 26%;
}

table.agents-directory-table tbody th,
table.agents-directory-table tbody td {
  text-align: start;
  vertical-align: top;
  padding: 0.85rem 0.9rem;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

table.agents-directory-table tbody th {
  color: var(--text-primary);
  background: var(--bg-surface);
}

table.agents-directory-table tbody tr:hover th,
table.agents-directory-table tbody tr:hover td {
  background: var(--bg-elevated);
}

.agent-name-title {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.35;
}

.agent-tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-block-start: 0.4rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid rgba(22, 163, 74, 0.25);
}

.agent-province-line {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-block-end: 0.2rem;
}

.agent-address-line {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.agent-fee-badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.82rem;
  background: var(--warning-bg);
  color: var(--warning-text);
  margin-block-end: 0.3rem;
}

.agent-payout-line {
  font-size: 0.81rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.agent-phone-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.28rem 0.65rem;
  border-radius: 8px;
  background: rgba(200, 30, 30, 0.1);
  color: var(--color-brand);
  font-weight: 800;
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  transition: background-color 0.15s ease;
}

.agent-phone-cta:hover {
  background: var(--color-brand);
  color: #ffffff;
}

.agent-services-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-block-start: 0.4rem;
}

.agent-service-tag {
  display: inline-block;
  font-size: 0.75rem;
  line-height: 1.3;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

@container (width < 680px) {
  table.agents-directory-table,
  table.agents-directory-table thead,
  table.agents-directory-table tbody,
  table.agents-directory-table tr,
  table.agents-directory-table th,
  table.agents-directory-table td {
    display: block;
    inline-size: 100%;
  }

  table.agents-directory-table thead {
    display: none;
  }

  table.agents-directory-table tr {
    margin-block-end: 0.9rem;
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  }

  table.agents-directory-table tbody th {
    position: sticky;
    inset-block-start: 0;
    z-index: 2;
    background: var(--bg-elevated);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
  }

  table.agents-directory-table tbody th .agent-tier-badge {
    margin-block-start: 0;
  }

  table.agents-directory-table tbody td {
    padding: 0.65rem 0.9rem;
  }

  table.agents-directory-table td:nth-child(2)::before,
  table.agents-directory-table td:nth-child(3)::before,
  table.agents-directory-table td:nth-child(4)::before {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-block-end: 0.25rem;
    font-weight: 700;
    color: var(--text-secondary);
  }

  table.agents-directory-table td:nth-child(2)::before {
    content: var(--label-2);
  }

  table.agents-directory-table td:nth-child(3)::before {
    content: var(--label-3);
  }

  table.agents-directory-table td:nth-child(4)::before {
    content: var(--label-4);
  }
}

/* Lottery Number Typography */
.kq-num-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem 0.85rem;
}

.kq-num {
  font-weight: 700;
  font-size: 1.12rem;
  padding: 0.12rem 0.35rem;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.kq-num.tier-DB {
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--color-brand);
  background: rgba(220, 38, 38, 0.08);
  padding: 0.2rem 0.6rem;
}

.kq-num.tier-G8,
.kq-num.tier-G7 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-gold);
}

.kq-num.highlighted-match {
  background: #fde047;
  color: #0f172a;
  box-shadow: 0 0 0 2px #ca8a04;
}

/* Live Draw Control Banner */
.live-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  margin-block-end: 1rem;
}

/* Batch Camera / AR Scanner Board */
.scanner-stage {
  position: relative;
  background: #0f172a;
  color: #f8fafc;
  border-radius: var(--radius-md);
  min-block-size: 300px;
  padding: 1rem;
  overflow: hidden;
  border: 2px dashed #475569;
}

.ar-ticket-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.85rem;
}

.ar-ticket-card {
  background: #fffbeb;
  color: #0f172a;
  border-radius: 10px;
  padding: 0.85rem;
  border: 2px solid #f59e0b;
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.ar-overlay-badge {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.78rem;
  margin-block-start: 0.45rem;
}

.ar-overlay-badge.win {
  background: #16a34a;
  color: #fff;
}

.ar-overlay-badge.warn {
  background: #d97706;
  color: #fff;
}

/* Vietlott Balls */
.ball-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-block: 0.6rem;
}

.lotto-ball {
  inline-size: 2.35rem;
  block-size: 2.35rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  background: linear-gradient(145deg, #ef4444, #b91c1c);
  color: #fff;
  box-shadow: inset 0 -2px 4px rgba(0, 0, 0, 0.25);
}

.lotto-ball.bonus {
  background: linear-gradient(145deg, #f59e0b, #b45309);
}

.number-picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(38px, 1fr));
  gap: 0.35rem;
  margin-block: 0.75rem;
}

.pick-num-btn {
  padding: 0.4rem 0;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 700;
  cursor: pointer;
}

.pick-num-btn.selected {
  background: #c81e1e;
  color: #fff;
  border-color: #991b1b;
}

/* Pro Mode Analytics Section (Hidden in Clean Mode unless enabled) */
.pro-only-section {
  display: none;
}

body[data-pro-mode="true"] .pro-only-section {
  display: block;
}

/* CLS-Safe Non-Intrusive Sponsor Slot */
.clean-ad-slot {
  min-block-size: 76px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-subtle);
  background: var(--bg-elevated);
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.84rem;
}

/* Form Validation After Interaction (Guides: forms, validate-input-after-interaction) */
.field-hint {
  font-size: 0.76rem;
  color: var(--text-secondary);
}

input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-brand);
  outline-offset: 2px;
}

input:user-invalid,
input.user-invalid-fallback {
  border-color: #d93025;
  background-color: rgba(217, 48, 37, 0.08);
}

.form-group:has(input:user-invalid) .field-hint,
.form-group:has(input.user-invalid-fallback) .field-hint {
  color: #d93025;
  font-weight: 600;
}

input:user-valid,
input.user-valid-fallback {
  border-color: #188038;
}

.form-group:has(input:user-valid) .field-hint {
  display: none;
}

.radio-group-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-top: 0.25rem;
}

.radio-card-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

/* ==========================================================================
   SCANNER DIALOG & MOBILE-FIRST OPTIMIZATIONS
   ========================================================================== */

.dialog-close-btn {
  flex-shrink: 0;
  white-space: nowrap;
}

.scanner-intro-text {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.scanner-actions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
  margin-block-end: 0.8rem;
}

.scanner-form-row {
  margin-block-end: 0.8rem;
}

.scanner-number-input-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.scanner-stage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  align-items: center;
}

.scanner-footer-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  margin-block-start: 0.9rem;
}

.scanner-footer-secondary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

@media (max-width: 768px) {
  .site-header {
    position: sticky;
    inset-block-start: 0;
  }

  .header-inner {
    padding: 0.5rem 0.65rem;
    gap: 0.45rem;
  }

  .brand-badge {
    font-size: 0.92rem;
    padding: 0.32rem 0.55rem;
    border-radius: 8px;
  }

  .brand-title {
    font-size: 0.98rem;
  }

  .brand-subtitle {
    display: none;
  }

  .header-controls {
    inline-size: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .btn-header-cta {
    flex: 1 1 calc(50% - 0.35rem);
    padding: 0.45rem 0.6rem;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  .switch-pill {
    padding: 0.25rem 0.55rem;
    font-size: 0.78rem;
    gap: 0.35rem;
  }

  .app-container {
    padding: 0.75rem 0.6rem 2.25rem;
    gap: 0.9rem;
  }

  .card {
    padding: 0.85rem;
    border-radius: 14px;
  }

  .live-banner {
    padding: 0.65rem 0.75rem;
    gap: 0.5rem;
  }

  .clean-ad-slot {
    flex-direction: column;
    align-items: stretch;
    text-align: start;
    gap: 0.55rem;
  }

  .clean-ad-slot .btn {
    inline-size: 100%;
  }

  .nav-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
  }

  .tab-btn {
    padding: 0.45rem 0.5rem;
    font-size: 0.82rem;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

@media (max-width: 640px) {
  /* Bảng KQXS 3 Đài vừa khít 100% trên màn hình điện thoại không bị cắt số */
  .table-wrapper {
    max-block-size: none;
  }

  #kqxs-main-table {
    table-layout: fixed;
    inline-size: 100%;
  }

  #kqxs-main-table caption {
    font-size: 0.84rem;
    padding: 0.5rem 0.65rem;
  }

  #kqxs-main-table thead th:first-child,
  #kqxs-main-table tbody th {
    inline-size: 64px;
    max-inline-size: 64px;
    white-space: normal;
    font-size: 0.72rem;
    line-height: 1.18;
    padding: 0.35rem 0.25rem;
    text-align: center;
  }

  #kqxs-main-table thead th:not(:first-child) {
    padding: 0.4rem 0.2rem;
    font-size: 0.82rem;
  }

  #kqxs-main-table thead th small {
    font-size: 0.66rem;
  }

  #kqxs-main-table tbody td {
    padding: 0.35rem 0.15rem;
  }

  .kq-num-grid {
    gap: 0.2rem 0.35rem;
  }

  .kq-num {
    font-size: 0.94rem;
    padding: 0.08rem 0.18rem;
    letter-spacing: 0;
  }

  .kq-num.tier-DB {
    font-size: 1.06rem;
    padding: 0.15rem 0.25rem;
  }

  .kq-num.tier-G8,
  .kq-num.tier-G7 {
    font-size: 1.04rem;
  }

  /* Tối ưu Hộp thoại Quét Camera trên màn hình Điện thoại */
  dialog {
    max-inline-size: 96vw;
    border-radius: 14px;
  }

  .dialog-inner {
    padding: 0.9rem;
  }

  .dialog-header {
    gap: 0.5rem;
    padding-block-end: 0.65rem;
    margin-block-end: 0.7rem;
  }

  .dialog-header h2 {
    font-size: 1rem;
    line-height: 1.25;
  }

  .scanner-form-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.55rem;
  }

  .scanner-stage {
    padding: 0.65rem;
    min-block-size: auto;
  }

  .scanner-stage-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.6rem;
  }

  .scanner-footer-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .scanner-footer-actions > .btn-primary {
    inline-size: 100%;
    padding: 0.65rem;
  }

  .scanner-footer-secondary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.35rem;
  }
}

/* ==========================================================================
   GLOBAL 6-TIER SEO SILO FOOTER
   ========================================================================== */

.site-seo-footer {
  background: var(--bg-surface);
  border-block-start: 1px solid var(--border-subtle);
  margin-block-start: 2rem;
  padding: 2rem 1rem 2.25rem;
}

.seo-footer-inner {
  max-inline-size: 1380px;
  margin-inline: auto;
}

.seo-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-block-end: 1.5rem;
}

.seo-footer-heading {
  margin: 0 0 0.65rem;
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-primary);
}

.seo-footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.42rem;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.seo-footer-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.seo-footer-list a:hover {
  color: var(--color-brand);
  text-decoration: underline;
}

.seo-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
  padding-block-start: 1.1rem;
  border-block-start: 1px dashed var(--border-subtle);
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.print-only-watermark {
  display: none;
}

/* ==========================================================================
   ADMIN COMMAND CENTER V2.0 (OPERATIONS, B2B REVENUE & 6-TIER SEO STUDIO)
   ========================================================================== */

.admin-command-bar {
  position: sticky;
  inset-block-start: 62px;
  z-index: 40;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.admin-quick-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.admin-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(195px, 1fr));
  gap: 0.85rem;
}

.admin-kpi-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.admin-kpi-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.admin-kpi-value {
  font-size: 1.45rem;
  font-weight: 900;
  line-height: 1.2;
}

.admin-kpi-sub {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.serp-preview-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  max-inline-size: 680px;
}

.serp-site-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-block-end: 0.35rem;
}

.serp-favicon {
  inline-size: 26px;
  block-size: 26px;
  border-radius: 50%;
  background: #c81e1e;
  color: #fff;
  font-weight: 900;
  font-size: 0.72rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.serp-title-link {
  color: #1a0dab;
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.35;
  margin-block-end: 0.3rem;
  text-decoration: none;
  display: block;
}

@media (prefers-color-scheme: dark) {
  .serp-title-link {
    color: #8ab4f8;
  }
}

.serp-desc-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.admin-disclosure-item {
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  background: var(--bg-elevated);
  padding: 0.7rem 0.95rem;
}

.admin-disclosure-item summary {
  font-weight: 800;
  cursor: pointer;
  font-size: 0.92rem;
}

.until-found-card-inner {
  margin-block-start: 0.65rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

/* =========================================================================
   DEFER RENDERING HEAVY OFF-SCREEN CONTENT (defer-rendering-heavy-content)
   ========================================================================= */
.site-seo-footer,
.below-fold-deferred {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 320px;
}

/* =========================================================================
   VIRAL SHARE BAR & B2B PRICING CARDS & MOBILE STICKY DOCK
   ========================================================================= */
.viral-share-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-start: 0.85rem;
  padding: 0.75rem 0.95rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.viral-share-info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.viral-share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.b2b-pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem;
}

.b2b-pricing-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.b2b-pricing-card.b2b-pricing-featured {
  border: 2px solid var(--color-brand);
  box-shadow: 0 6px 18px rgba(185, 28, 28, 0.12);
}

.b2b-pricing-badge {
  align-self: flex-start;
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  background: var(--color-brand-soft);
  color: var(--color-brand);
}

.b2b-pricing-card h4 {
  margin: 0;
  font-size: 1rem;
}

.b2b-pricing-amount {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--color-brand);
}

.b2b-pricing-amount small {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.b2b-pricing-features {
  margin: 0.25rem 0 0;
  padding-inline-start: 0;
  list-style: none;
  font-size: 0.83rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.mobile-bottom-dock {
  display: none;
}

@media (max-width: 768px) {
  body {
    padding-block-end: 74px;
  }

  .mobile-bottom-dock {
    position: fixed;
    inset-block-end: 0;
    inset-inline: 0;
    z-index: 950;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.35rem;
    padding: 0.45rem 0.6rem calc(0.45rem + env(safe-area-inset-bottom, 0px));
    background: var(--bg-surface);
    border-block-start: 1px solid var(--border-subtle);
    box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.12);
  }

  .mobile-dock-item {
    appearance: none;
    border: 1px solid transparent;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.38rem 0.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    text-decoration: none;
    font-family: inherit;
    cursor: pointer;
  }

  .mobile-dock-item.mobile-dock-primary {
    background: var(--color-brand);
    color: #ffffff;
    font-weight: 800;
  }

  .mobile-dock-icon {
    font-size: 1.05rem;
    line-height: 1;
  }

  .mobile-dock-label {
    font-size: 0.72rem;
    font-weight: 700;
    white-space: nowrap;
  }
}

/* Print Stylesheet for Agent 4/1 & 58mm Thermal POS */
@media print {
  .site-header,
  .left-column,
  .nav-tabs,
  .live-banner,
  .clean-ad-slot,
  .viral-share-bar,
  .mobile-bottom-dock,
  .ssr-monetization-funnel,
  .site-seo-footer,
  .no-print {
    display: none !important;
  }
  .print-only-watermark {
    display: block !important;
    margin-block-start: 0.65rem;
    padding-block-start: 0.45rem;
    border-block-start: 1px dashed #64748b;
    text-align: center;
    font-size: 0.85rem;
    color: #0f172a;
  }
  .app-container {
    display: block;
    padding: 0;
  }
  .card {
    border: none;
    padding: 0;
    box-shadow: none;
  }
}