/**
 * Shared responsive design system — spacing, touch targets, action groups, stacked tables.
 * Loaded after app.css on user app and admin console.
 */

:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --touch-target: 44px;
  --page-gutter-mobile: 12px;
  --page-gutter-desktop: 24px;
  --stack-gap: 10px;

  /* Fixed bottom navigation + optional action dock (mobile) */
  --bottom-nav-padding-top: 6px;
  --bottom-nav-item-height: 52px;
  --bottom-nav-content-height: calc(var(--bottom-nav-padding-top) + var(--bottom-nav-item-height));
  --bottom-nav-offset: calc(var(--bottom-nav-content-height) + env(safe-area-inset-bottom, 0px));
  --mobile-dock-gap: var(--space-2);
  --mobile-dock-bar-padding-y: 10px;
  --mobile-dock-bar-height: calc(var(--touch-target) + (var(--mobile-dock-bar-padding-y) * 2));
  /* Overridden by JS to the live sticky dock height (hints + upgrade CTAs vary). */
  --mobile-dock-content-height: var(--mobile-dock-bar-height);
  --mobile-dock-bottom: calc(var(--bottom-nav-offset) + var(--mobile-dock-gap));
  --page-bottom-with-nav: calc(var(--bottom-nav-offset) + var(--space-4));
  --page-bottom-with-dock: calc(var(--mobile-dock-bottom) + var(--mobile-dock-content-height) + var(--space-4));
  --fab-bottom: calc(var(--bottom-nav-offset) + var(--space-5));
}

html {
  overflow-x: clip;
}

body {
  overflow-x: clip;
}

/* Consistent flex/grid action groups (buttons, chips, links) */
.action-group,
.admin-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--stack-gap);
}

.action-group--stack {
  flex-direction: column;
  align-items: stretch;
}

.action-group--stack .btn,
.admin-actions.action-group--stack .btn,
.admin-actions-stacked .btn {
  width: 100%;
}

/* Prevent flex children from forcing horizontal overflow */
.page-content,
.main-content,
.admin-content,
.admin-console,
.card,
.glass,
.table-wrap {
  min-width: 0;
  max-width: 100%;
}

/* Stacked responsive data tables (requires data-label on td) */
@media (max-width: 767px) {
  .table-stack-mobile thead {
    display: none;
  }

  .table-stack-mobile,
  .table-stack-mobile tbody,
  .table-stack-mobile tr {
    display: block;
    width: 100%;
  }

  .table-stack-mobile tr {
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--border);
  }

  .table-stack-mobile tr:last-child {
    border-bottom: 0;
  }

  .table-stack-mobile td {
    display: grid;
    grid-template-columns: minmax(88px, 34%) minmax(0, 1fr);
    gap: var(--space-2) var(--space-3);
    align-items: start;
    padding: 6px 0;
    border: none;
    text-align: left;
  }

  .table-stack-mobile td::before {
    content: attr(data-label);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
  }

  .table-stack-mobile.table-stack-mobile--actions td:last-child {
    grid-template-columns: 1fr;
  }

  .table-stack-mobile.table-stack-mobile--actions td:last-child::before {
    display: none;
  }
}

@media (max-width: 767px) {
  .btn-sm {
    min-height: var(--touch-target);
    padding: 10px 16px;
    font-size: 14px;
  }

  .btn:not(.btn-icon):not(.btn-copy) {
    min-height: var(--touch-target);
  }

  .action-group,
  .admin-actions {
    gap: var(--space-3);
  }

  .action-group--stack,
  .admin-actions.action-group--stack,
  .admin-actions-stacked {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .action-group--stack .btn,
  .admin-actions.action-group--stack .btn,
  .admin-actions-stacked .btn,
  .admin-user-detail-actions .admin-actions .btn,
  .admin-user-card-actions .admin-actions .btn,
  .admin-users-row-actions .btn {
    width: 100%;
    min-height: var(--touch-target);
  }

  .card-header-row,
  .credits-panel-head,
  .credits-history-head,
  .credits-page-section-head,
  .plan-usage-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .card-header-row .btn {
    width: 100%;
  }

  .credits-history-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 14px;
    text-align: left;
  }

  .credits-history-header .card-title {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    text-align: left;
  }

  .credits-history-header .btn {
    width: auto;
    min-height: initial;
    font-size: 0.76rem;
    padding: 5px 11px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .form-group + .btn,
  .admin-user-info-card .btn + .btn {
    margin-top: var(--space-2);
  }

  .admin-user-info-card .btn,
  .admin-user-info-card textarea,
  .admin-user-info-card .form-input {
    width: 100%;
  }

  .modal-actions {
    gap: var(--space-3);
  }

  .chip-group {
    width: 100%;
  }

  .chip-group .chip {
    flex: 1 1 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--touch-target);
    text-align: center;
    line-height: 1.2;
    padding: 0 12px;
  }

  .login-container .btn,
  .login-container button[type="submit"] {
    width: 100%;
    min-height: var(--touch-target);
  }

  .login-container .btn + .btn {
    margin-top: 0;
  }

  .login-shell {
    --login-chrome: max(3.25rem, calc(env(safe-area-inset-top, 0px) + 2.75rem));
    flex-direction: column;
    align-items: center;
    justify-content: center;
    justify-content: safe center;
    padding:
      var(--login-chrome)
      max(12px, env(safe-area-inset-right, 0px))
      max(var(--login-chrome), env(safe-area-inset-bottom, 0px))
      max(12px, env(safe-area-inset-left, 0px));
  }

  .login-container {
    width: min(100%, 28rem);
    padding: 1.15rem 1rem;
    margin-block: auto;
  }

  .login-brand {
    margin-bottom: var(--login-gap-section, 1.1rem);
  }

  .login-brand h1 {
    margin: 0.65rem 0 0.45rem;
  }

  .login-subtitle {
    font-size: 0.875rem;
  }

  .login-main {
    gap: var(--login-gap-section, 1.1rem);
  }

  .login-form {
    gap: var(--login-gap-field, 0.75rem);
  }

  .login-footer {
    margin-top: 1.2rem;
  }

  .login-footnote {
    font-size: 0.8rem;
  }

  .auth-legal-footer {
    margin-top: 0.85rem;
    padding-top: 0.85rem;
    gap: 0.45rem 0.75rem;
  }

  .auth-legal-footer a {
    font-size: 12px;
    line-height: 1.4;
  }

  .login-theme-toggle {
    top: max(10px, env(safe-area-inset-top, 0px));
    right: max(10px, env(safe-area-inset-right, 0px));
    min-width: 40px;
    min-height: 40px;
    padding: 8px 10px;
  }

  .login-theme-toggle > span:not(.icon) {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  /* Sticky action bars above fixed bottom navigation */
  .mobile-dock-bar {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: var(--mobile-dock-bottom);
    z-index: 89;
    align-items: center;
    gap: var(--space-2);
    min-height: var(--mobile-dock-bar-height);
    padding:
      var(--mobile-dock-bar-padding-y)
      max(var(--page-gutter-mobile), env(safe-area-inset-right, 0px))
      var(--mobile-dock-bar-padding-y)
      max(var(--page-gutter-mobile), env(safe-area-inset-left, 0px));
    border-top: 1px solid var(--border);
    background: var(--surface-solid);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
    box-sizing: border-box;
  }

  .mobile-dock-bar .btn {
    min-height: var(--touch-target);
    flex: 1 1 0;
    justify-content: center;
  }

  .mobile-dock-bar .btn-primary {
    flex: 1.35 1 0;
  }

  body.has-bottom-nav:not(.has-mobile-dock) .page-content {
    padding-bottom: var(--page-bottom-with-nav);
  }

  body.has-mobile-dock .page-content {
    padding-bottom: var(--page-bottom-with-dock);
  }

  body.has-bottom-nav .modal {
    padding-bottom: var(--page-bottom-with-nav);
  }

  body.has-bottom-nav.has-mobile-dock .modal {
    padding-bottom: var(--page-bottom-with-dock);
  }
}

@media (min-width: 768px) {
  .action-group--inline-desktop,
  .admin-actions.action-group--inline-desktop,
  .admin-actions-stacked.action-group--inline-desktop {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
  }

  .action-group--inline-desktop .btn,
  .admin-actions.action-group--inline-desktop .btn,
  .admin-actions-stacked.action-group--inline-desktop .btn {
    width: auto;
    min-height: 38px;
  }
}

/*
 * Responsive data views: hide table on mobile, show companion card list.
 * Markup: .responsive-data > .responsive-data__table-wrap + .responsive-data__cards
 */
@media (max-width: 767px) {
  .responsive-data__table-wrap {
    display: none !important;
  }

  .responsive-data__cards {
    display: flex !important;
    flex-direction: column;
    min-width: 0;
    overflow-x: clip;
  }
}

@media (min-width: 768px) {
  .responsive-data__cards {
    display: none !important;
  }
}

/* Responsive page intro banner */
@media (max-width: 640px) {
  .page-intro-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
  }

  .page-intro-content {
    width: 100%;
  }

  .page-intro-note {
    font-size: 0.8125rem;
    line-height: 1.35;
  }

  .page-intro-doc-link {
    align-self: flex-start;
    font-size: 0.75rem;
    padding: 4px 10px;
  }
}

/* ── Mobile Plan UI Responsive Adaptations (Req #111 - #122) ──────────────── */
@media (max-width: 767px) {
  .plan-usage-header,
  .dashboard-welcome-row {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0.75rem;
  }

  .dashboard-welcome-row > div:first-child {
    flex: 0 0 auto;
    width: 100%;
  }

  .dashboard-plan-badge-wrap {
    width: 100%;
    justify-content: space-between;
  }

  body.page-dashboard {
    overflow-x: clip;
  }

  body.page-dashboard .page-content {
    padding-left: 12px;
    padding-right: 12px;
  }

  .quick-actions-next-step {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .quick-actions-next-step-cta {
    grid-column: 1 / -1;
    width: 100%;
    min-height: 44px;
    justify-content: center;
  }

  .plan-meters {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .plan-meter-count,
  .plan-meter-label strong {
    word-break: break-word;
  }

  .admin-sidebar,
  .admin-main,
  .admin-console,
  .page-content,
  .billing-page {
    max-width: 100%;
    overflow-x: clip;
  }

  .billing-summary-credits-sub {
    word-break: break-word;
  }

  .billing-usage-count,
  .billing-usage-remain {
    font-size: 0.75rem;
  }

  .plan-compare-table {
    font-size: 0.8rem;
  }

  .plan-compare-table th,
  .plan-compare-table td {
    padding: 0.5rem 0.4rem;
  }

  .admin-plan-change-form .admin-form-grid,
  .admin-custom-limits-form .admin-form-grid {
    grid-template-columns: 1fr !important;
  }

  .match-preview-grid {
    grid-template-columns: 1fr !important;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .billing-summary {
    gap: 0.85rem 1rem;
  }

  .billing-summary-credits {
    min-width: 6.5rem;
  }

  .billing-plan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .billing-topup-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr));
  }

  .login-container {
    width: min(100%, 26rem);
  }
}

@media (max-width: 380px) {
  .login-shell {
    padding-left: max(10px, env(safe-area-inset-left, 0px));
    padding-right: max(10px, env(safe-area-inset-right, 0px));
  }

  .login-hint {
    font-size: 0.78rem;
  }
}

/* Phones (up to 430px, e.g. iPhone Pro Max): give the page title room. The plan name and
   the theme switch stay available on the plan page and in the sidebar menu; credits stay visible. */
@media (max-width: 430px) {
  .topbar .nav-plan-label,
  .topbar .nav-credit-sep,
  #themeToggleMobile {
    display: none;
  }
}