/* ============================================================
   Core by Uncles&Co — Responsive & PWA Styles
   responsive.css — Mobile-first media queries
   ============================================================ */

/* ============================================================
   1. SIDEBAR OVERLAY (for off-canvas on mobile/tablet)
   ============================================================ */

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .45);
  backdrop-filter: blur(2px);
  z-index: 899;
  opacity: 0;
  transition: opacity var(--duration) var(--ease-default);
}

.sidebar-overlay.is-visible {
  display: block;
  opacity: 1;
}

/* ============================================================
   2. HAMBURGER BUTTON (hidden on desktop)
   ============================================================ */

.topnav__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--fs-xl);
  transition: all var(--duration) var(--ease-default);
  padding: 0;
  flex-shrink: 0;
}

.topnav__hamburger:hover {
  background: var(--brand-muted);
  color: var(--brand);
}

/* ============================================================
   3. TABLET — max-width: 1024px
   Already partially handled in base.css. We extend here.
   ============================================================ */

@media (max-width: 1024px) {

  /* Show hamburger */
  .topnav__hamburger {
    display: inline-flex;
  }

  /* Sidebar: off-canvas */
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
    z-index: 900;
  }

  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }

  /* Main: remove sidebar margin */
  .app-main {
    margin-left: 0;
    padding: var(--space-6);
  }

  /* Footer: remove sidebar offset */
  .app-footer {
    margin-left: 0;
  }

  /* Section headers: wrap on narrow screens */
  .section-header {
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  /* Table toolbar: stack */
  .table-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .table-toolbar__search {
    max-width: 100%;
  }

  .table-toolbar__filters {
    flex-wrap: wrap;
  }

  /* Wizard steps: compact */
  .wizard__steps {
    gap: 0;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: var(--space-2);
  }

  .wizard__step + .wizard__step::before {
    width: 24px;
    margin: 0 var(--space-1);
  }

  .wizard__step-label {
    font-size: var(--fs-xs);
  }
}

/* ============================================================
   4. MOBILE — max-width: 768px
   ============================================================ */

@media (max-width: 768px) {

  /* ---- Topnav: compact ---- */
  .topnav {
    padding: 0 var(--space-3);
    gap: var(--space-2);
  }

  .topnav__breadcrumb {
    display: none;
  }

  .topnav__right {
    gap: var(--space-2);
  }

  .topnav__icon-btn {
    width: 32px;
    height: 32px;
    font-size: var(--fs-md);
  }

  .topnav__avatar {
    width: 28px;
    height: 28px;
    font-size: var(--fs-xs);
  }

  /* ---- Main content: tighter padding ---- */
  .app-main {
    padding: var(--space-4) var(--space-3);
  }

  /* ---- KPI grid: single column ---- */
  .kpi-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  /* ---- KPI cards: smaller on mobile ---- */
  .kpi-card {
    padding: var(--space-4);
  }

  .kpi-card__value {
    font-size: var(--fs-2xl);
  }

  /* ---- Cards: full width stack ---- */
  .card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
  }

  .card__actions {
    width: 100%;
    justify-content: flex-end;
  }

  .card__body {
    padding: var(--space-4);
  }

  .card__footer {
    padding: var(--space-3) var(--space-4);
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  /* ---- Section headers: stack title & buttons ---- */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  /* ---- Tables: horizontal scroll ---- */
  .data-table-wrapper {
    border-radius: var(--radius-md);
    -webkit-overflow-scrolling: touch;
  }

  .data-table {
    font-size: var(--fs-xs);
    min-width: 600px;
  }

  .data-table th,
  .data-table td {
    padding: var(--space-2) var(--space-3);
  }

  /* Show row actions on mobile (no hover) */
  .table-row-actions {
    opacity: 1;
  }

  /* Table footer: stack */
  .table-footer {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }

  /* ---- Pagination: simplified ---- */
  .pagination {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-1);
  }

  .pagination__btn {
    min-width: 28px;
    height: 28px;
    font-size: var(--fs-xs);
    padding: 0 var(--space-1);
  }

  .pagination__ellipsis {
    display: none;
  }

  /* ---- Forms: single column ---- */
  .form-group {
    margin-bottom: var(--space-4);
  }

  .input-group {
    flex-direction: column;
  }

  .input-group__prepend,
  .input-group__append {
    border-radius: var(--radius-md);
    border: 1px solid var(--border-default);
  }

  .input-group__prepend {
    border-bottom: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }

  .input-group__prepend + .form-control {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .input-group__append {
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  /* ---- Modals: full-screen on mobile ---- */
  .modal-backdrop {
    align-items: flex-end;
  }

  .modal {
    margin: 0;
    max-width: 100%;
    max-height: 95vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    animation: modal-enter-mobile 0.25s var(--ease-default);
  }

  .modal--sm,
  .modal--md,
  .modal--lg,
  .modal--xl {
    max-width: 100%;
  }

  .modal__header {
    padding: var(--space-4);
  }

  .modal__body {
    padding: var(--space-4);
  }

  .modal__footer {
    padding: var(--space-3) var(--space-4);
    flex-wrap: wrap;
  }

  .modal__footer .btn {
    flex: 1;
    min-width: 0;
  }

  @keyframes modal-enter-mobile {
    from { opacity: 0; transform: translateY(100%); }
    to   { opacity: 1; transform: translateY(0); }
  }

  /* ---- Font sizes: slightly smaller ---- */
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
  h3 { font-size: var(--fs-lg); }
  h4 { font-size: var(--fs-md); }

  /* ---- Alerts: tighter ---- */
  .alert {
    padding: var(--space-3) var(--space-4);
    font-size: var(--fs-xs);
  }

  /* ---- Flash messages ---- */
  .flash-messages {
    padding: 0;
  }

  /* ---- Wizard: vertical on mobile ---- */
  .wizard__steps {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .wizard__step {
    width: 100%;
  }

  .wizard__step + .wizard__step::before {
    display: none;
  }

  .wizard__footer {
    flex-direction: column;
    gap: var(--space-3);
  }

  .wizard__footer .btn {
    width: 100%;
  }

  /* ---- Obligation items: compact ---- */
  .obligation-item {
    flex-wrap: wrap;
    gap: var(--space-3);
    padding: var(--space-3);
  }

  /* ---- Quick actions grid ---- */
  .quick-actions {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: var(--space-3);
  }

  /* ---- Toast: full width ---- */
  .toast-container {
    left: var(--space-3);
    right: var(--space-3);
  }

  .toast {
    min-width: auto;
    max-width: 100%;
  }

  /* ---- Footer: compact ---- */
  .app-footer {
    padding: var(--space-4);
    font-size: 10px;
  }

  /* ---- Dropdown menu ---- */
  .topnav__dropdown {
    right: -8px;
    min-width: 180px;
  }

  /* ---- Buttons: full-width stacking ---- */
  .btn-group-mobile {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    width: 100%;
  }

  .btn-group-mobile .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================================
   5. SMALL MOBILE — max-width: 480px
   ============================================================ */

@media (max-width: 480px) {

  /* Even tighter spacing */
  .app-main {
    padding: var(--space-3) var(--space-2);
  }

  /* KPI card values smaller */
  .kpi-card__value {
    font-size: var(--fs-xl);
  }

  .kpi-card__label {
    font-size: var(--fs-xs);
  }

  /* Logo: shorter */
  .topnav__logo {
    font-size: var(--fs-md);
  }

  /* Tables: even more compact */
  .data-table {
    min-width: 480px;
  }

  .data-table th,
  .data-table td {
    padding: var(--space-1) var(--space-2);
    font-size: 11px;
  }

  /* Quick actions: single column */
  .quick-actions {
    grid-template-columns: 1fr !important;
  }

  /* Pagination: minimal */
  .pagination__btn {
    min-width: 24px;
    height: 24px;
    font-size: 10px;
  }
}

/* ============================================================
   6. GRID LAYOUT UTILITIES — responsive columns
   ============================================================ */

.grid {
  display: grid;
  gap: var(--space-4);
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   7. TOUCH ENHANCEMENTS
   ============================================================ */

@media (hover: none) and (pointer: coarse) {
  /* Larger tap targets */
  .sidebar__link {
    padding: var(--space-3);
    min-height: 44px;
  }

  .topnav__icon-btn {
    min-width: 44px;
    min-height: 44px;
  }

  .pagination__btn {
    min-width: 36px;
    height: 36px;
  }

  .btn--sm {
    padding: var(--space-2) var(--space-3);
    min-height: 36px;
  }

  /* Disable hover effects that feel wrong on touch */
  .kpi-card:hover {
    transform: none;
  }

  .card--interactive:hover {
    transform: none;
  }
}

/* ============================================================
   8. PWA STANDALONE MODE
   ============================================================ */

@media (display-mode: standalone) {
  /* Remove padding for safe area on notch devices */
  .topnav {
    padding-top: env(safe-area-inset-top);
    height: calc(var(--topnav-h) + env(safe-area-inset-top));
  }

  .sidebar {
    top: calc(var(--topnav-h) + env(safe-area-inset-top));
    height: calc(100vh - var(--topnav-h) - env(safe-area-inset-top));
    padding-bottom: env(safe-area-inset-bottom);
  }

  .app-main {
    margin-top: calc(var(--topnav-h) + env(safe-area-inset-top));
    padding-bottom: calc(var(--space-8) + env(safe-area-inset-bottom));
  }

  .app-footer {
    padding-bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
  }

  .modal-backdrop {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* ============================================================
   9. PRINT — hide mobile-only elements
   ============================================================ */

@media print {
  .topnav__hamburger,
  .sidebar-overlay {
    display: none !important;
  }
}