:root,
[data-bs-theme="light"] {
  --app-bg: #f4f6fb;
  --app-bg-soft: rgba(255, 255, 255, .55);
  --app-card-bg: rgba(255, 255, 255, .94);
  --app-border: rgba(15, 23, 42, .12);
  --app-border-strong: rgba(15, 23, 42, .18);
  --app-shadow: 0 .75rem 2rem rgba(15, 23, 42, .08);
  --app-nav-bg: rgba(255, 255, 255, .86);
  --app-code-bg: rgba(15, 23, 42, .05);
  --app-radius: 18px;
}

[data-bs-theme="dark"] {
  --bs-body-bg: #18202b;
  --bs-body-color: #eef3f8;
  --bs-secondary-color: #b7c3d0;
  --bs-tertiary-color: #94a3b8;
  --bs-heading-color: #f8fafc;
  --bs-border-color: rgba(203, 213, 225, .20);
  --bs-link-color: #8ab4ff;
  --bs-link-hover-color: #b3ccff;
  --app-bg: #18202b;
  --app-bg-soft: rgba(30, 41, 59, .72);
  --app-card-bg: rgba(34, 45, 61, .96);
  --app-border: rgba(203, 213, 225, .18);
  --app-border-strong: rgba(226, 232, 240, .28);
  --app-shadow: 0 .85rem 2.2rem rgba(0, 0, 0, .24);
  --app-nav-bg: rgba(24, 32, 43, .90);
  --app-code-bg: rgba(226, 232, 240, .08);
}

html,
body {
  min-height: 100vh;
}

body {
  background: radial-gradient(circle at top left, rgba(13, 110, 253, .10), transparent 28rem), var(--app-bg);
  color: var(--bs-body-color);
}

.navbar-blur {
  background: var(--app-nav-bg);
  backdrop-filter: blur(12px);
}

.navbar-brand,
.navbar .nav-link {
  color: var(--bs-body-color);
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--bs-link-color);
}

.app-card {
  border: 1px solid var(--app-border);
  border-radius: var(--app-radius);
  background: var(--app-card-bg);
  box-shadow: none;
}

.device-card {
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}

.device-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--app-shadow);
  border-color: var(--app-border-strong);
}

.stat-card .display-6 {
  line-height: 1;
}

.auth-wrap {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  width: 100%;
  max-width: 430px;
}

.app-logo {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: white;
  font-size: 1.5rem;
  background: linear-gradient(135deg, #0d6efd, #4f46e5);
}

.status-dot {
  width: .65rem;
  height: .65rem;
  border-radius: 999px;
  display: inline-block;
  flex: 0 0 auto;
  margin-top: .2rem;
}

.star-btn {
  color: #f59f00;
  padding: 0;
  line-height: 1;
  font-size: 1.2rem;
  text-decoration: none;
}

.star-btn:hover {
  color: #e67700;
}

.empty-state {
  border: 1px dashed var(--app-border-strong);
  border-radius: var(--app-radius);
  padding: 3rem 1rem;
  text-align: center;
  color: var(--bs-secondary-color);
  background: var(--app-bg-soft);
}

.clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.codebox {
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--app-border);
  background: var(--app-code-bg);
  color: var(--bs-body-color);
  white-space: pre-wrap;
}

.toast-stack {
  max-width: 720px;
}

.table > :not(caption) > * > * {
  padding: 1rem;
}

.min-w-0 {
  min-width: 0;
}

.group-icon-preview {
  min-width: 2.75rem;
  justify-content: center;
  font-size: 1.05rem;
}

.form-text,
.text-secondary {
  color: var(--bs-secondary-color) !important;
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select,
[data-bs-theme="dark"] .input-group-text {
  background-color: #263244;
  border-color: rgba(226, 232, 240, .22);
  color: #f1f5f9;
}

[data-bs-theme="dark"] .form-control::placeholder {
  color: #9fb0c3;
}

[data-bs-theme="dark"] .dropdown-menu,
[data-bs-theme="dark"] .modal-content,
[data-bs-theme="dark"] .list-group-item {
  background-color: #222d3d;
  color: #eef3f8;
  border-color: var(--app-border);
}

[data-bs-theme="dark"] .btn-outline-secondary {
  --bs-btn-color: #d8e1eb;
  --bs-btn-border-color: rgba(216, 225, 235, .42);
  --bs-btn-hover-bg: rgba(216, 225, 235, .16);
  --bs-btn-hover-color: #ffffff;
}

[data-bs-theme="dark"] .btn-outline-primary {
  --bs-btn-color: #9ec5fe;
  --bs-btn-border-color: #78a9ff;
  --bs-btn-hover-bg: #0d6efd;
  --bs-btn-hover-border-color: #0d6efd;
  --bs-btn-hover-color: #ffffff;
}

[data-bs-theme="dark"] .alert-info {
  --bs-alert-color: #d9f2ff;
  --bs-alert-bg: #19384a;
  --bs-alert-border-color: #315f78;
}

[data-bs-theme="dark"] .alert-warning {
  --bs-alert-color: #fff2c8;
  --bs-alert-bg: #4b3a12;
  --bs-alert-border-color: #80611e;
}

[data-bs-theme="dark"] .alert-danger {
  --bs-alert-color: #ffd7df;
  --bs-alert-bg: #4a1d28;
  --bs-alert-border-color: #8a3448;
}

[data-bs-theme="dark"] .alert-success {
  --bs-alert-color: #d9ffe9;
  --bs-alert-bg: #183d2b;
  --bs-alert-border-color: #2e704c;
}

.totp-qr {
  width: 180px;
  max-width: 100%;
  border-radius: 14px;
  border: 1px solid var(--app-border);
  background: #fff;
  padding: .5rem;
}

.backup-password-input {
  width: 190px;
  min-width: 160px;
}

.status-inline {
  max-width: min(48rem, 100%);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 991.98px) {
  .status-inline {
    white-space: normal;
  }
}


/* Settings layout */
.settings-sidebar { overflow: hidden; }
@media (min-width: 992px) {
  .settings-sidebar.sticky-lg-top { top: 5.25rem; }
}
.settings-nav .list-group-item {
  border-left: 0;
  border-right: 0;
  display: flex;
  align-items: center;
  gap: .25rem;
}
.settings-nav .list-group-item:first-child { border-top: 0; }
.settings-nav .list-group-item:last-child { border-bottom: 0; }
.settings-nav .list-group-item.active {
  font-weight: 600;
}
.tab-pane > .card, .tab-pane > .row > [class*="col-"] > .card {
  scroll-margin-top: 6rem;
}

/* Import layout */
.import-sidebar { overflow: hidden; }
@media (min-width: 992px) {
  .import-sidebar.sticky-lg-top { top: 5.25rem; }
}
.settings-nav-label { display: inline-flex; flex-direction: column; line-height: 1.12; }
.settings-nav-label span:last-child { font-size: .92em; opacity: .9; }

/* Device view modes */
.device-list-table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--bs-secondary-color); }
.device-list-table td, .device-list-table th { vertical-align: middle; }
.device-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(116px, 1fr));
  gap: .75rem;
}
.device-icon-tile {
  position: relative;
  border: 1px solid var(--app-border);
  border-radius: 16px;
  background: var(--app-card-bg);
  box-shadow: var(--app-shadow);
  padding: .8rem .6rem .65rem;
  min-height: 112px;
}
.device-icon-main {
  color: var(--bs-body-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  text-align: center;
  min-width: 0;
}
.device-icon-main i {
  font-size: 1.75rem;
  color: var(--bs-primary);
}
.device-icon-main span {
  width: 100%;
  font-size: .86rem;
  line-height: 1.15;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.device-icon-status {
  position: absolute;
  width: .68rem;
  height: .68rem;
  border-radius: 999px;
  top: .55rem;
  left: .55rem;
}
.device-icon-edit {
  position: absolute;
  top: .35rem;
  right: .45rem;
  color: var(--bs-secondary-color);
}
.device-icon-edit:hover { color: var(--bs-primary); }

/* Security log: keep the page compact while still allowing access to older rows. */
.security-log-scroll {
  max-height: 31rem;
  overflow: auto;
}
.security-log-scroll thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--app-card-bg);
}


/* Compact group list */
.group-list-card .group-list-row:last-of-type { border-bottom: 0 !important; }
.group-list-header,
.group-list-row {
  display: grid;
  grid-template-columns: minmax(180px, 1.35fr) minmax(110px, .75fr) minmax(180px, 1.15fr) minmax(110px, .7fr) minmax(120px, auto);
  gap: .65rem;
  align-items: center;
}
.group-list-row .form-control,
.group-list-row .form-select,
.group-list-row .input-group-text {
  min-height: 2rem;
}
.group-list-row .group-icon-preview {
  min-width: 2.25rem;
  padding-left: .45rem;
  padding-right: .45rem;
}
.group-list-row .group-actions { white-space: nowrap; }
@media (max-width: 991.98px) {
  .group-list-row {
    grid-template-columns: 1fr;
    gap: .45rem;
  }
  .group-list-row .group-actions {
    justify-content: flex-start;
  }
}

/* Responsive layout and mobile usability */
html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

.app-footer-auth {
  text-align: center;
}

body,
.app-main,
.app-footer,
.card,
.card-body,
.tab-content,
.tab-pane {
  min-width: 0;
}

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

code,
pre,
.file-name-wrap,
.rab-file-label,
#updateCheckResult {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.codebox,
pre.bg-body-tertiary {
  max-width: 100%;
  overflow-x: auto;
}

.page-header > :first-child,
.page-actions,
.app-navbar-actions {
  min-width: 0;
}

.page-actions .status-inline {
  flex: 1 1 18rem;
}

.rab-file-label {
  min-width: 0;
  white-space: normal;
}

.diagnostic-table-scroll {
  max-width: 100%;
}

.diagnostic-sample-table td,
.diagnostic-sample-table th {
  max-width: 22rem;
  white-space: normal;
  overflow-wrap: anywhere;
}

.help-toc {
  position: sticky;
  top: 5rem;
  overflow: hidden;
}

@media (max-width: 1199.98px) {
  .help-toc {
    position: static;
  }

  .help-toc .list-group {
    display: flex;
    flex-direction: row;
    gap: .35rem;
    padding: .5rem;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
  }

  .help-toc .list-group-item {
    flex: 0 0 auto;
    width: auto;
    border: 1px solid var(--app-border) !important;
    border-radius: .65rem !important;
    white-space: nowrap;
  }
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    max-height: calc(100vh - 4.5rem);
    overflow-y: auto;
    padding-top: .75rem;
    padding-bottom: .5rem;
  }

  .navbar-nav .nav-link {
    padding: .65rem .25rem;
  }

  .app-navbar-actions {
    align-items: stretch !important;
    flex-direction: column;
    width: 100%;
    padding-top: .75rem;
    border-top: 1px solid var(--app-border);
  }

  .app-navbar-actions > *,
  .app-navbar-actions form,
  .app-navbar-actions form .btn {
    width: 100%;
  }

  .settings-sidebar,
  .import-sidebar {
    position: static !important;
  }

  .settings-sidebar .settings-nav,
  .import-sidebar .settings-nav {
    display: flex;
    flex-direction: row;
    gap: .35rem;
    padding: .5rem;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
  }

  .settings-sidebar .settings-nav .list-group-item,
  .import-sidebar .settings-nav .list-group-item {
    flex: 0 0 auto;
    width: auto;
    border: 1px solid var(--app-border) !important;
    border-radius: .65rem !important;
    white-space: nowrap;
  }

  .settings-nav-label {
    display: inline-flex;
    flex-direction: row;
    gap: .25rem;
    align-items: baseline;
  }

  .group-list-card .card-body {
    padding: .75rem !important;
  }

  .group-list-row {
    padding: .9rem !important;
    margin-bottom: .75rem;
    border: 1px solid var(--app-border) !important;
    border-radius: .8rem;
    background: var(--app-bg-soft);
  }

  .group-list-row:last-of-type {
    margin-bottom: 0;
  }

  .group-field::before {
    content: attr(data-label);
    display: block;
    margin-bottom: .3rem;
    color: var(--bs-secondary-color);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .03em;
    text-transform: uppercase;
  }

  .group-list-row .group-actions {
    width: 100%;
  }

  .group-list-row .group-actions .btn {
    flex: 1 1 0;
  }

  .status-inline {
    max-width: 100%;
    overflow: visible;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 767.98px) {
  .app-main {
    padding-top: 1.25rem !important;
    padding-bottom: 1.5rem !important;
  }

  .app-footer {
    padding-bottom: 1rem !important;
  }

  .app-card,
  .auth-card {
    border-radius: 14px;
  }

  .card-body {
    padding: 1rem;
  }

  .table-responsive:has(.mobile-stack-table) {
    overflow: visible;
  }

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

  .mobile-stack-table thead {
    display: none;
  }

  .mobile-stack-table tbody {
    padding: .75rem;
  }

  .mobile-stack-table tbody tr {
    margin-bottom: .75rem;
    padding: .7rem .85rem;
    border: 1px solid var(--app-border);
    border-radius: .8rem;
    background: var(--app-bg-soft);
  }

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

  .mobile-stack-table tbody td {
    display: grid;
    grid-template-columns: minmax(6.75rem, 38%) minmax(0, 1fr);
    gap: .65rem;
    align-items: start;
    padding: .45rem 0;
    border: 0;
    text-align: left !important;
    white-space: normal !important;
    overflow-wrap: anywhere;
  }

  .mobile-stack-table tbody td::before {
    content: attr(data-label);
    color: var(--bs-secondary-color);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .02em;
    text-transform: uppercase;
  }

  .mobile-stack-table tbody td[colspan] {
    display: block;
    text-align: center !important;
  }

  .mobile-stack-table tbody td[colspan]::before {
    content: none;
  }

  .mobile-stack-table .mobile-actions-cell > * {
    min-width: 0;
  }

  .mobile-stack-table .btn-group,
  .mobile-stack-table .backup-actions {
    width: 100%;
    justify-content: flex-start !important;
  }

  .device-list-table .text-truncate {
    white-space: normal;
  }

  .security-log-scroll {
    max-height: 70vh;
  }

  .security-events-table tbody {
    padding: .5rem;
  }

  .backup-actions,
  .backup-restore-form {
    align-items: stretch !important;
  }

  .backup-actions > *,
  .backup-actions > form,
  .backup-actions .btn,
  .backup-password-input {
    width: 100%;
    min-width: 0;
  }

  .key-value-table,
  .key-value-table tbody,
  .key-value-table tr,
  .key-value-table th,
  .key-value-table td {
    display: block;
    width: 100% !important;
  }

  .key-value-table tr {
    padding: .65rem 0;
    border-bottom: 1px solid var(--app-border);
  }

  .key-value-table tr:last-child {
    border-bottom: 0;
  }

  .key-value-table th,
  .key-value-table td {
    padding: .2rem 0 !important;
    border: 0;
    overflow-wrap: anywhere;
  }

  .device-icon-grid {
    grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    gap: .6rem;
  }
}


.security-status-row > div {
  min-width: 0;
}

.security-status-row .small,
.security-code-block,
.security-code-block code {
  max-width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 575.98px) {
  .settings-section-header {
    flex-direction: column;
    align-items: stretch !important;
  }

  .settings-section-header > .btn,
  .settings-section-header > .badge {
    align-self: flex-start;
  }

  .security-status-row {
    flex-direction: column;
    align-items: stretch !important;
  }

  .security-status-row .badge {
    align-self: flex-start;
  }

  .navbar .container-fluid,
  .app-main,
  .app-footer {
    padding-left: .85rem !important;
    padding-right: .85rem !important;
  }

  .navbar-brand {
    display: flex;
    align-items: center;
    min-width: 0;
    max-width: calc(100% - 4rem);
    margin-right: .5rem;
    font-size: 1rem;
  }

  .navbar-brand .brand-text {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .page-header h1 {
    font-size: 1.45rem;
  }

  .page-actions {
    width: 100%;
  }

  .page-actions > a.btn,
  .page-actions > form,
  .page-actions > form .btn,
  form.page-actions,
  form.page-actions .btn,
  .page-actions > .status-inline {
    width: 100%;
  }

  .page-actions > .btn-group {
    width: 100%;
  }

  .page-actions > .btn-group .btn {
    flex: 1 1 0;
  }

  .page-actions .status-inline {
    flex-basis: 100%;
  }

  .rab-file-picker {
    display: flex;
    flex-direction: column;
  }

  .rab-file-picker > .btn,
  .rab-file-picker > .form-control {
    width: 100%;
    min-height: 2.5rem;
    border-radius: .375rem !important;
  }

  .rab-file-picker > .form-control {
    display: flex;
    align-items: center;
    margin-top: .4rem;
  }

  .auth-wrap {
    min-height: calc(100vh - 95px);
    align-items: flex-start;
    padding-top: 1rem;
  }

  .auth-card .card-body {
    padding: 1.15rem !important;
  }

  .empty-state {
    padding: 2rem .85rem;
  }

  .mobile-stack-table tbody td {
    grid-template-columns: 1fr;
    gap: .2rem;
  }

  .mobile-stack-table tbody td::before {
    margin-bottom: .1rem;
  }

  .table > :not(caption) > * > * {
    padding: .75rem;
  }

  .totp-qr {
    width: min(180px, 100%);
  }
}

.device-icon-password { position:absolute; left:.35rem; bottom:.35rem; border:0; background:transparent; color:var(--bs-primary); padding:.2rem .35rem; border-radius:.35rem; }
.device-icon-password:hover { background:var(--bs-tertiary-bg); }