/* ═══════════════════════════════════════════════════════════════════════════════
   CLSU SecureID — Responsive UI enhancements
   Breakpoints: 1280 (desktop), 1100 (laptop), 900 (tablet), 768 (mobile), 480 (phone)
   Brand: CLSU Green #009639 · CLSU Yellow #FFD700
   ═══════════════════════════════════════════════════════════════════════════════ */

:root {
  --bottom-nav-height: 0px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

/* ── Topbar: expandable mobile search ───────────────────────────────────────── */
.topbar-search-wrap {
  min-width: 0;
  flex: 1;
}

.topbar-search-toggle {
  display: none;
}

.topbar.is-search-open .topbar-search-wrap {
  grid-column: 1 / -1;
  order: 10;
}

.topbar.is-search-open .search {
  width: 100%;
}

/* ── Mobile bottom navigation ───────────────────────────────────────────────── */
.mobile-bottom-nav {
  display: none;
}

/* ── Tracking stepper: horizontal scroll on narrow screens ──────────────────── */
.tracking-stepper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  padding-bottom: 4px;
}

.tracking-step {
  scroll-snap-align: center;
  min-width: 72px;
}

/* ── Laptop (≤1280px) ───────────────────────────────────────────────────────── */
@media (max-width: 1280px) {
  .admin-charts-grid {
    grid-template-columns: 1fr 1fr;
  }
  .admin-chart-card-wide {
    grid-column: 1 / -1;
  }
}

/* ── Tablet landscape / small laptop (≤1100px) ──────────────────────────────── */
@media (max-width: 1100px) {
  .admin-tracking-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .admin-status-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .application-container,
  .admin-container,
  .applications-container {
    padding: 24px 20px 32px;
  }
}

/* ── Tablet portrait (≤900px) ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .topbar {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .clsu-brand-text .brand-tagline {
    display: none;
  }

  .sidebar .clsu-brand-text .brand-tagline {
    display: none;
  }

  .admin-header-group {
    padding: 16px 18px;
  }

  .admin-header-group .admin-title {
    font-size: 1.3rem;
  }

  .admin-chart-card {
    padding: 14px;
  }

  .admin-donut-wrap {
    justify-content: center;
  }

  .admin-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .admin-table {
    min-width: 720px;
  }

  .admin-batch-table {
    min-width: 640px;
  }

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

  .admin-charts-grid {
    grid-template-columns: 1fr;
  }

  .admin-tracking-summary-head {
    flex-direction: column;
    align-items: stretch;
  }

  .tracking-stepper {
    grid-template-columns: repeat(5, minmax(88px, 1fr));
  }

  .application-status-hero {
    padding: 16px;
  }

  .application-status-batch-scroll {
    max-height: min(220px, 34vh);
    margin: 0 16px 16px;
  }

  .applications-records-card .application-status-records-scroll {
    max-height: min(320px, 42vh);
  }

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

}

/* ── Mobile (≤768px) ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --bottom-nav-height: calc(56px + var(--safe-bottom));
  }

  body.app-authenticated {
    padding-bottom: var(--bottom-nav-height);
  }

  .auth-shell {
    padding: max(12px, var(--safe-top)) max(12px, var(--safe-right)) max(12px, var(--safe-bottom)) max(12px, var(--safe-left));
  }

  .main {
    padding-bottom: calc(12px + var(--bottom-nav-height));
  }

  .topbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
  }

  .topbar-search-wrap {
    flex: 1 1 auto;
    min-width: 0;
    order: 2;
  }

  .topbar .search {
    width: 100%;
  }

  .topbar-search-toggle {
    display: inline-flex;
    order: 1;
  }

  .topbar:not(.is-search-open) .topbar-search-wrap {
    display: none;
  }

  .topbar.topbar--no-search {
    display: flex;
    flex-wrap: nowrap;
    justify-content: flex-end;
    align-items: center;
  }

  .topbar.topbar--no-search #mobileMenuBtn {
    margin-right: auto;
  }

  .topbar.topbar--no-search .topbar-search-wrap,
  .topbar.topbar--no-search .topbar-search-toggle {
    display: none !important;
  }

  .topbar.topbar--no-search .topbar-actions {
    order: 3;
    margin-left: 0;
  }

  .topbar-actions {
    order: 3;
    margin-left: auto;
  }

  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 250;
    background: var(--panel);
    border-top: 1px solid var(--border);
    padding: 6px max(8px, var(--safe-right)) calc(6px + var(--safe-bottom)) max(8px, var(--safe-left));
    box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.08);
    justify-content: space-around;
    gap: 4px;
  }

  .mobile-bottom-nav.hidden {
    display: none !important;
  }

  .bottom-nav-item {
    flex: 1;
    max-width: 88px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 48px;
    padding: 6px 4px;
    border: none;
    background: transparent;
    color: var(--muted);
    border-radius: 10px;
    cursor: pointer;
    font-size: 10px;
    font-weight: 600;
    line-height: 1.2;
  }

  .bottom-nav-item svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
  }

  .bottom-nav-item.active {
    color: var(--accent);
    background: var(--accent-light);
  }

  .bottom-nav-item:focus-visible {
    outline: 3px solid var(--accent-600);
    outline-offset: 2px;
  }

  .admin-container,
  .applications-container {
    padding: 16px 12px calc(24px + var(--bottom-nav-height));
  }

  .application-container {
    padding: 16px 12px calc(24px + var(--bottom-nav-height));
  }

  .admin-tracking-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding: 12px 16px 16px;
  }

  .admin-tracking-card {
    padding: 12px 8px;
  }

  .admin-tracking-value {
    font-size: 1.15rem;
  }

  .admin-status-grid,
  .admin-status-grid-7 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .admin-users-summary {
    margin-bottom: 12px;
  }

  /* Card-style stacked admin tables on mobile */
  .admin-table.admin-users-table,
  .admin-table.admin-batch-table {
    min-width: 0;
  }

  .admin-users-table-wrap .admin-table thead {
    display: none;
  }

  .admin-users-table-wrap .admin-table tbody {
    display: grid;
    gap: 10px;
    padding: 8px;
  }

  .admin-users-table-wrap .admin-table-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-sm);
  }

  .admin-users-table-wrap .admin-table-row td {
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .admin-users-table-wrap .admin-table-row td::before {
    content: attr(data-label);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--clsu-green-cobra);
  }

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

  .admin-user-action-group .primary-btn,
  .admin-user-action-group .secondary-btn,
  .admin-user-action-group .danger-btn {
    width: 100%;
    justify-content: center;
  }

  .admin-batch-actions:not(.admin-batch-actions--stacked) {
    flex-direction: column;
    align-items: stretch;
  }

  .application-status-batch-table .admin-batch-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .application-status-batch-table .admin-decision-action-btn,
  .application-status-batch-table .admin-batch-actions-tools .secondary-btn {
    width: 100%;
    justify-content: center;
  }

  .admin-batch-actions .primary-btn,
  .admin-batch-actions .secondary-btn,
  .admin-batch-actions .danger-btn {
    width: 100%;
    justify-content: center;
  }

  .admin-status-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .admin-status-remarks {
    width: 100%;
    min-width: 0;
  }

  .admin-tracking-scroll {
    max-height: min(160px, 22vh);
  }

  .admin-charts-scroll {
    max-height: min(260px, 34vh);
  }

  .admin-users-head {
    flex-direction: column;
    align-items: stretch;
  }

  .admin-users-count {
    align-self: flex-start;
  }

  .admin-header-group {
    padding: 16px;
  }

  .admin-title {
    font-size: 1.25rem;
  }

  .tracking-stepper {
    grid-template-columns: repeat(5, minmax(76px, 1fr));
    gap: 6px;
    margin-top: 14px;
  }

  .tracking-step-label {
    font-size: 10px;
    line-height: 1.25;
  }

  .application-metrics {
    grid-template-columns: 1fr;
  }

  .activity-log-modal {
    width: calc(100vw - 16px);
    max-height: calc(100vh - var(--bottom-nav-height) - 24px);
  }

  .modal .modal-content:not(.preview-wide) {
    max-height: calc(92vh - var(--bottom-nav-height));
    overflow-y: auto;
  }

  #toast-container {
    bottom: calc(12px + var(--bottom-nav-height));
    top: auto;
    right: 12px;
    left: 12px;
  }

  .breadcrumb {
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
    padding-bottom: 2px;
  }
}

/* ── Small phone (≤480px) ───────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .topbar:not(.is-search-open) .topbar-search-wrap {
    display: none;
  }

  /* Override legacy rule that hid search entirely */
  .topbar .search {
    display: inline-flex !important;
  }

  .admin-tracking-grid {
    grid-template-columns: 1fr 1fr;
  }

  .admin-status-grid {
    grid-template-columns: 1fr 1fr;
  }

  .tracking-stepper {
    grid-template-columns: repeat(5, minmax(68px, 1fr));
  }

  .application-title {
    font-size: 1.25rem;
  }

  .system-activity-table thead {
    display: none;
  }

  .system-activity-table tbody {
    display: grid;
    gap: 10px;
  }

  .system-activity-table tr {
    display: block;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    background: #fff;
  }

  .system-activity-table td {
    display: block;
    padding: 4px 0;
    border: none;
  }

  .system-activity-table td::before {
    content: attr(data-label);
    display: block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 2px;
  }
}

/* ── Large desktop (≥1281px) ────────────────────────────────────────────────── */
@media (min-width: 1281px) {
  .main,
  .application-container,
  .admin-container,
  .applications-container {
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════════
   RESPONSIVE HARDENING — desktop → tablet → phone
   Breakpoints: 1024, 768, 480, 425, 375, 320
   Goal: no page-level horizontal scroll; tables scroll inside wrappers only.
   ═══════════════════════════════════════════════════════════════════════════════ */

/* Global containment (all viewports) */
.content,
.admin-container,
.applications-container,
.application-container,
.activity-logs-container,
.export-history-container,
.table,
.admin-table-wrapper,
.admin-batch-scroll,
.application-status-records-scroll,
.application-status-batch-scroll,
.export-history-table-wrap,
.activity-logs-records-scroll,
.activity-logs-table-shell,
.pff-wrap,
.pff-scroll-body,
.pff-form-header,
.pff-doc-uploads,
.modal .modal-content {
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.admin-table-wrapper,
.admin-batch-scroll,
.application-status-records-scroll,
.application-status-batch-scroll,
.export-history-table-wrap,
.activity-logs-records-scroll,
.admin-batch-applicants-panel,
.table {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

img,
svg,
video,
canvas,
iframe {
  max-width: 100%;
}

.form-row input,
.form-row select,
.form-row textarea,
.meta-row input,
.pff-applicant-org-unit-input,
.pff-applicant-consent-name-field input,
.admin-status-remarks,
.search input {
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

/* ── Tablet / small laptop (≤1024px) ───────────────────────────────────────── */
@media (max-width: 1024px) {
  .admin-container,
  .applications-container,
  .application-container,
  .activity-logs-container,
  .export-history-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .export-history-header {
    flex-direction: column;
    align-items: stretch;
  }

  .export-history-header-stats {
    width: 100%;
    flex-wrap: wrap;
  }

  .export-history-stat-card {
    flex: 1 1 100px;
    min-width: 0;
  }

  .admin-reports-head,
  .application-card-head,
  .applications-export-actions-bar {
    flex-wrap: wrap;
  }

  .pff-actions {
    flex-wrap: wrap;
  }

  .pff-actions .primary-btn,
  .pff-actions .secondary-btn,
  .pff-actions .pff-save-btn,
  .pff-actions .pff-submit-btn {
    max-width: 100%;
  }

  .profile-modal,
  .modal .modal-content:not(.preview-wide) {
    width: min(560px, calc(100% - 24px)) !important;
    max-width: calc(100vw - 24px);
  }
}

/* ── Mobile shell (≤768px) ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    left: 0;
    transform: translateX(-105%);
    width: min(280px, calc(100vw - 48px));
    max-width: 86vw;
    height: 100%;
    height: 100dvh;
    padding: max(12px, var(--safe-top)) 12px max(12px, var(--safe-bottom));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transition: transform 0.28s ease;
  }

  .sidebar.mobile-show {
    left: 0;
    transform: translateX(0);
  }

  .sidebar-backdrop {
    z-index: 190;
  }

  .sidebar {
    z-index: 200;
  }

  .collapseSidebarBtn,
  #collapseSidebarBtn {
    display: none !important;
  }

  .topbar {
    width: 100%;
    max-width: 100%;
  }

  .topbar-actions {
    flex: 0 1 auto;
    min-width: 0;
    max-width: 100%;
    gap: 4px;
  }

  /* Prefer icons-only upload controls; hide folder upload on narrow bars */
  .topbar-actions #uploadFolderBtn {
    display: none;
  }

  .breadcrumb {
    max-width: 100%;
  }

  .content {
    overflow-x: hidden;
    overflow-y: auto;
  }

  /* Tables: keep scroll inside wrappers; never expand the page */
  .admin-table-wrapper,
  .admin-batch-scroll,
  .application-status-records-scroll,
  .application-status-batch-scroll,
  .export-history-table-wrap,
  .activity-logs-records-scroll {
    width: 100%;
    max-width: 100%;
    overflow-x: auto !important;
  }

  .application-status-records-scroll .application-status-table,
  .admin-batch-scroll .admin-batch-table,
  .application-status-batch-table,
  .export-history-table {
    /* Allow intrinsic wide tables, but only inside the scroll container */
    width: max-content;
    max-width: none;
  }

  /* Card-stacked tables drop fixed min-widths */
  .admin-users-table-wrap .admin-table,
  .activity-logs-table {
    min-width: 0 !important;
    width: 100% !important;
  }

  .pff-toolbar {
    width: 100%;
  }

  .pff-actions {
    width: 100%;
    justify-content: stretch;
  }

  .pff-actions > * {
    flex: 1 1 auto;
    justify-content: center;
    min-width: 0;
  }

  .pff-pnpki-pdf-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
  }

  .pff-pnpki-pdf-actions .pff-file-choose-btn,
  .pff-pnpki-pdf-actions .secondary-btn {
    flex: 1 1 140px;
    justify-content: center;
    text-align: center;
  }

  .pff-applicant-privacy-notice {
    padding: 12px;
  }

  .pff-applicant-privacy-notice-title {
    font-size: 0.875rem;
  }

  .pff-applicant-privacy-notice-body {
    font-size: 0.8125rem;
  }

  .pff-doc-upload-row {
    min-width: 0;
  }

  .application-form-hub-actions,
  .applications-doc-actions,
  .export-history-actions,
  .admin-batch-applicant-actions {
    width: 100%;
  }

  .application-form-hub-actions > *,
  .export-history-actions > * {
    flex: 1 1 auto;
    min-width: 0;
    justify-content: center;
  }

  .export-history-header-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .export-history-stat-card {
    min-width: 0;
  }

  .meta-row {
    grid-template-columns: 1fr;
  }

  .user-dropdown {
    right: 0;
    left: auto;
    max-width: calc(100vw - 24px);
  }

  .modal {
    padding: 12px;
    overflow: auto;
  }

  .modal .modal-content:not(.preview-wide) {
    width: min(560px, calc(100% - 8px)) !important;
    max-width: calc(100vw - 24px) !important;
    max-height: calc(100dvh - var(--bottom-nav-height, 0px) - 24px);
    overflow: auto;
  }

  /* Avoid 100vw overflow from scrollbar gutters */
  .modal .modal-content.preview-wide,
  #previewModal .modal-content.preview-wide,
  #pnpkiDocumentModal .modal-content.preview-wide {
    width: 100% !important;
    max-width: 100% !important;
  }

  #aboutModal .about-modal,
  .export-details-modal,
  .activity-log-modal,
  .profile-modal {
    width: calc(100% - 8px) !important;
    max-width: calc(100vw - 24px) !important;
  }

  .pnpki-document-meta-grid {
    grid-template-columns: 1fr !important;
  }

  .applications-status-grid,
  .admin-status-grid,
  .admin-status-grid-7 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .admin-header-group .admin-title,
  .application-title,
  .export-history-title {
    overflow-wrap: anywhere;
  }
}

/* ── Small phone (≤480px) ──────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .main {
    padding: 6px;
    gap: 6px;
  }

  .topbar {
    padding: 6px;
    gap: 6px;
    border-radius: 10px;
  }

  .topbar-actions #newFolderBtn {
    display: none;
  }

  .auth-card {
    width: 100%;
    max-width: 100%;
    padding: 14px 12px;
  }

  #otpCode,
  #resetOtp {
    letter-spacing: 4px !important;
    font-size: 20px !important;
  }

  .admin-tracking-grid,
  .admin-status-grid,
  .admin-status-grid-7,
  .applications-status-grid,
  .application-metrics {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .export-history-header-stats {
    grid-template-columns: 1fr 1fr;
  }

  .application-container,
  .admin-container,
  .applications-container,
  .activity-logs-container,
  .export-history-container {
    padding: 12px 8px calc(20px + var(--bottom-nav-height, 0px));
  }

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

  .pff-actions > * {
    width: 100%;
  }

  .pff-zoom-controls {
    order: 5;
    width: 100%;
    justify-content: center;
  }

  .bottom-nav-item {
    max-width: none;
    font-size: 9px;
    padding: 4px 2px;
  }

  .bottom-nav-item span {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .modal {
    padding: 0;
  }

  .modal .modal-content:not(.preview-wide) {
    width: 100% !important;
    max-width: 100% !important;
    border-radius: 16px 16px 0 0;
  }

  .activity-logs-table tbody td {
    grid-template-columns: 1fr !important;
  }

  .activity-logs-pagination {
    flex-direction: column;
    align-items: stretch;
  }

  .activity-logs-pagination-actions {
    width: 100%;
  }

  .activity-logs-pagination-actions .secondary-btn {
    flex: 1;
    justify-content: center;
  }

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

/* ── Compact phone (≤425px) ────────────────────────────────────────────────── */
@media (max-width: 425px) {
  .admin-tracking-value {
    font-size: 1.05rem;
  }

  .admin-title,
  .application-title,
  .export-history-title {
    font-size: 1.15rem;
  }

  .application-status-hero {
    padding: 12px;
  }

  .pff-applicant-consent-body,
  .pff-applicant-privacy-notice-body {
    font-size: 0.78rem;
    line-height: 1.5;
  }

  .file-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .toolbar .right,
  .sort-group {
    width: 100%;
  }

  .sort-group select {
    width: 100%;
    min-width: 0;
  }
}

/* ── iPhone SE / small (≤375px) ────────────────────────────────────────────── */
@media (max-width: 375px) {
  .admin-tracking-grid,
  .admin-status-grid,
  .applications-status-grid,
  .application-metrics,
  .export-history-header-stats {
    grid-template-columns: 1fr;
  }

  .grid-view .grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .card .card-title {
    font-size: 12px;
  }

  .primary-btn,
  .danger-btn,
  .secondary-btn,
  .icon-left-btn {
    padding: 0 12px;
    font-size: 13px;
  }

  .pff-file-choose-btn {
    width: 100%;
  }

  .mobile-bottom-nav {
    padding-inline: 4px;
  }
}

/* ── Ultra-narrow (≤320px) ─────────────────────────────────────────────────── */
@media (max-width: 320px) {
  .main {
    padding: 4px;
    gap: 4px;
  }

  .topbar {
    padding: 4px;
  }

  .topbar-actions {
    gap: 2px;
  }

  .icon-btn,
  .topbar-actions .icon-left-btn,
  .topbar-actions #uploadBtn,
  .topbar-actions #newFolderBtn {
    width: 40px;
    height: 40px;
  }

  .avatar {
    width: 28px;
    height: 28px;
  }

  .sidebar {
    width: min(260px, calc(100vw - 28px));
  }

  .auth-card {
    padding: 12px 10px;
    border-radius: 12px;
  }

  .auth-brand .brand-name {
    font-size: 16px;
  }

  .bottom-nav-item {
    min-height: 44px;
    font-size: 8px;
  }

  .admin-header-group,
  .application-status-hero {
    padding: 10px;
  }

  .pff-applicant-privacy-notice,
  .pff-applicant-field-group {
    padding-left: 0;
    padding-right: 0;
  }
}