/* AddSSH Panel Styles
   - Colors: 100% semantic M3 tokens backed by official @radix-ui/colors v3
   - Typography: 4 sizes max (>= 12px, rem units)
   - Borders: 0.5px structural/control borders; 2px high-contrast focus-visible ring
   - Motion: <= 200ms ease-out on explicit properties, prefers-reduced-motion respected */

:root {
  --font-sans: 'LXGW Bright', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'AnonymicePro Nerd Font', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Strictly 4 font sizes */
  --fs-headline: 1.25rem;  /* 20px */
  --fs-title: 0.9375rem;   /* 15px */
  --fs-body: 0.8125rem;    /* 13px */
  --fs-label: 0.75rem;     /* 12px */

  /* Concentric shape tokens */
  --radius-pill: 9999px;
  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --border-hairline: 0.5px;
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
  --dur-fast: 180ms;
}

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

[hidden] {
  display: none !important;
}

html {
  font-family: var(--font-sans);
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-height: 100dvh;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-body);
  line-height: 1.5;
}

code,
pre,
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

:focus-visible {
  outline: 2px solid var(--md-sys-color-focus-ring);
  outline-offset: 2px;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Icons & Flags */
.icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

.icon-sm {
  width: 15px;
  height: 15px;
}

.flag-icon {
  width: 20px;
  height: 15px;
  object-fit: cover;
  border-radius: 3px;
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  background-color: var(--md-sys-color-surface-container);
}

.flag-fallback {
  width: 20px;
  height: 15px;
  border-radius: 3px;
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spin {
  animation: spin 900ms linear infinite;
}

/* Login View */
.auth-shell {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background-color: var(--md-sys-color-surface);
}

.auth-panel {
  width: 100%;
  max-width: 380px;
  background-color: var(--md-sys-color-surface-container-low);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
}

.auth-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-title {
  margin: 0;
  font-size: var(--fs-headline);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.host-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 500;
}

/* App Adaptive Shell */
.app-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 100dvh;
}

.app-nav {
  background-color: var(--md-sys-color-surface-container-low);
  border-right: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: sticky;
  top: 0;
  height: 100dvh;
  z-index: 20;
}

.nav-top {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  gap: 8px;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: var(--fs-body);
  font-weight: 500;
  text-align: left;
  transition: background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.nav-item:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.nav-item[aria-current="page"] {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 600;
}

.nav-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: inherit;
  opacity: 0.85;
}

.nav-bottom {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

/* Main Workspace */
.app-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.hosts-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 100dvh;
}

.hosts-workspace.has-detail {
  grid-template-columns: minmax(0, 1fr) 400px;
}

.pane-primary {
  min-width: 0;
  padding: 20px 24px 44px;
}

.pane-detail {
  background-color: var(--md-sys-color-surface-container-low);
  border-left: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
  padding: 20px;
}

/* Page Header & Toolbars */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.page-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-title {
  margin: 0;
  font-size: var(--fs-headline);
  font-weight: 600;
  line-height: 1.35;
}

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

.mobile-topbar {
  display: none;
}

/* Toolbar: Search + Sort + Group Toggle + View Mode */
.toolbar-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.search-box {
  position: relative;
  flex: 1 1 240px;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 14px;
  color: var(--md-sys-color-on-surface-variant);
  pointer-events: none;
}

.search-input {
  width: 100%;
  min-height: 44px;
  padding: 0 42px 0 40px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-body);
  transition: border-color var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
}

.search-input:hover {
  border-color: var(--md-sys-color-outline-hover);
}

.search-input::placeholder {
  color: var(--md-sys-color-on-surface-variant);
}

.search-clear {
  position: absolute;
  right: 2px;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.search-clear:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-surface);
}

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

.toolbar-select {
  min-height: 44px;
  padding: 0 30px 0 14px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-body);
  font-weight: 500;
  cursor: pointer;
}

.toolbar-select:hover {
  border-color: var(--md-sys-color-outline-hover);
}

.toggle-pill-btn {
  appearance: none;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--fs-body);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.toggle-pill-btn:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.toggle-pill-btn[aria-pressed="true"] {
  background-color: var(--md-sys-color-primary-container);
  border-color: transparent;
  color: var(--md-sys-color-on-primary-container);
  font-weight: 600;
}

/* View Switcher (Grid / List) */
.view-switcher {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border-radius: var(--radius-pill);
  background-color: var(--md-sys-color-surface-container);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.view-switch-btn {
  appearance: none;
  min-height: 38px;
  min-width: 44px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--fs-label);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.view-switch-btn[aria-checked="true"] {
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-weight: 600;
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

/* Filter Chips */
.chip-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.chip {
  appearance: none;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  background-color: transparent;
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--fs-label);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.chip:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.chip[aria-pressed="true"] {
  background-color: var(--md-sys-color-primary-container);
  border-color: transparent;
  color: var(--md-sys-color-on-primary-container);
  font-weight: 600;
}

/* Buttons */
.btn {
  appearance: none;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid transparent;
  font-size: var(--fs-body);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--md-sys-color-primary-hover);
}

.btn-tonal {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.btn-tonal:hover:not(:disabled) {
  background-color: var(--md-sys-color-primary-container-hover);
}

.btn-secondary {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--md-sys-color-secondary-container-hover);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--md-sys-color-outline);
  color: var(--md-sys-color-on-surface);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--md-sys-color-secondary-container);
  border-color: var(--md-sys-color-outline-hover);
}

.btn-danger-tonal {
  background-color: var(--md-sys-color-error-container);
  border-color: var(--md-sys-color-error-border);
  color: var(--md-sys-color-on-error-container);
}

.btn-danger-tonal:hover:not(:disabled) {
  background-color: var(--md-sys-color-error-container-hover);
}

.btn-danger {
  background-color: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--md-sys-color-error-hover);
}

.icon-btn {
  appearance: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-pill);
  border: 0;
  background-color: transparent;
  color: var(--md-sys-color-on-surface-variant);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.icon-btn:hover:not(:disabled) {
  background-color: var(--md-sys-color-secondary-container-hover);
  color: var(--md-sys-color-on-surface);
}

.icon-btn-danger:hover:not(:disabled) {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

.icon-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-label);
  font-weight: 500;
  line-height: 1.35;
  white-space: nowrap;
  border: var(--border-hairline) solid transparent;
}

.badge-neutral {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-surface-variant);
}

.badge-primary {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.badge-success {
  background-color: var(--md-sys-color-success-container);
  border-color: var(--md-sys-color-success-border);
  color: var(--md-sys-color-on-success-container);
}

.badge-warning {
  background-color: var(--md-sys-color-warning-container);
  border-color: var(--md-sys-color-warning-border);
  color: var(--md-sys-color-on-warning-container);
}

.badge-error {
  background-color: var(--md-sys-color-error-container);
  border-color: var(--md-sys-color-error-border);
  color: var(--md-sys-color-on-error-container);
}

/* Windows Explorer Downloads-Style Date Group Sections */
.date-group {
  margin-bottom: 18px;
}

.date-group-header {
  appearance: none;
  width: 100%;
  min-height: 44px;
  padding: 4px 2px;
  border: 0;
  background: transparent;
  color: var(--md-sys-color-on-surface);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  text-align: left;
  margin-bottom: 8px;
}

.date-group-chevron {
  color: var(--md-sys-color-on-surface-variant);
  transition: transform var(--dur-fast) var(--ease-out);
}

.date-group-header[aria-expanded="false"] .date-group-chevron {
  transform: rotate(-90deg);
}

.date-group-title {
  font-size: var(--fs-body);
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
}

.date-group-count {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
}

.date-group-line {
  flex: 1;
  height: var(--border-hairline);
  background-color: var(--md-sys-color-outline-variant);
  margin-left: 4px;
}

/* Card Grid Mode (Komari-inspired Clean Connection Cards) */
.hosts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(298px, 1fr));
  gap: 12px;
}

.host-card {
  background-color: var(--md-sys-color-surface-container-low);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-lg);
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}

.host-card:hover {
  background-color: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-outline);
}

.host-card[aria-selected="true"] {
  background-color: var(--md-sys-color-primary-container);
  border-color: var(--md-sys-color-primary);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.card-identity {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex-wrap: wrap;
}

.host-alias {
  font-family: var(--font-mono);
  font-size: var(--fs-title);
  font-weight: 600;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.komari-subname {
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 170px;
}

.host-card[aria-selected="true"] .komari-subname,
.host-card[aria-selected="true"] .card-meta-row,
.host-row[aria-selected="true"] .komari-subname,
.host-row[aria-selected="true"] .host-meta,
.host-row[aria-selected="true"] .host-key-name {
  color: var(--md-sys-color-on-primary-container);
}

.card-endpoint-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 6px 8px 6px 10px;
  border-radius: var(--radius-sm);
  background-color: var(--md-sys-color-surface);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.host-card[aria-selected="true"] .card-endpoint-bar {
  background-color: var(--md-sys-color-surface-container-low);
}

.endpoint-text {
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.endpoint-port {
  color: var(--md-sys-color-on-surface-variant);
}

/* Compact inline action button with 44x44px touch hit expansion */
.mini-action-btn {
  position: relative;
  appearance: none;
  min-height: 28px;
  padding: 0 9px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-label);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  flex-shrink: 0;
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.mini-action-btn::after {
  content: "";
  position: absolute;
  inset: -8px -4px;
}

.mini-action-btn:hover:not(:disabled) {
  background-color: var(--md-sys-color-secondary-container-hover);
  border-color: var(--md-sys-color-outline);
}

.mini-action-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
}

.card-key-info {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 8px;
  border-top: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.report-pills {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.report-pill {
  position: relative;
  appearance: none;
  min-height: 28px;
  padding: 0 9px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  background-color: transparent;
  color: var(--md-sys-color-on-surface);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.report-pill::after {
  content: "";
  position: absolute;
  inset: -8px -2px;
}

.report-pill:hover {
  background-color: var(--md-sys-color-secondary-container);
  border-color: var(--md-sys-color-outline-hover);
}

.report-pill-ns {
  background-color: var(--md-sys-color-primary-container);
  border-color: transparent;
  color: var(--md-sys-color-on-primary-container);
}

.report-pill-ns:hover {
  background-color: var(--md-sys-color-primary-container-hover);
}

.report-pill-add {
  border-style: dashed;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--font-sans);
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

/* List Mode Rows (Komari-inspired Compact Table View) */
.list-container {
  border-top: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.host-row {
  display: grid;
  grid-template-columns: minmax(150px, 1.4fr) minmax(190px, 1.9fr) minmax(110px, 1.1fr) minmax(136px, 1.3fr) 86px minmax(106px, auto) 132px;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 5px 8px;
  border-bottom: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out);
}

.host-row:hover {
  background-color: var(--md-sys-color-surface-container-low);
}

.host-row[aria-selected="true"] {
  background-color: var(--md-sys-color-primary-container);
}

.host-alias-cell {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.host-endpoint-cell {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.host-address {
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  color: var(--md-sys-color-on-surface);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.host-meta {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
  white-space: nowrap;
}

.host-key-cell {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.host-key-name {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.host-links-cell {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-wrap: wrap;
}

.host-status-cell {
  display: flex;
  justify-content: flex-start;
}

.host-actions-cell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
}

/* Detail / Inspector Content */
.detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 14px;
}

.detail-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.detail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-headline);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.detail-section {
  padding: 14px 0;
  border-top: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.section-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.section-heading {
  margin: 0 0 10px;
  font-size: var(--fs-label);
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
}

.section-header-row .section-heading {
  margin-bottom: 0;
}

.kv-list {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  row-gap: 8px;
  column-gap: 12px;
  margin: 0;
}

.kv-list dt {
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
}

.kv-list dd {
  margin: 0;
  font-size: var(--fs-body);
  word-break: break-all;
}

.link-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ext-link-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background-color: var(--md-sys-color-surface-container);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-body);
  transition: background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}

.ext-link-row:hover {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-outline);
}

.ext-link-url {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code-block {
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background-color: var(--md-sys-color-surface-container);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre;
}

.pubkey-box {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background-color: var(--md-sys-color-surface-container);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  line-height: 1.45;
  word-break: break-all;
}

/* Alerts / Callouts */
.callout {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: var(--border-hairline) solid transparent;
  font-size: var(--fs-body);
  margin-bottom: 14px;
}

.callout-error {
  background-color: var(--md-sys-color-error-container);
  border-color: var(--md-sys-color-error-border);
  color: var(--md-sys-color-on-error-container);
}

.callout-warning {
  background-color: var(--md-sys-color-warning-container);
  border-color: var(--md-sys-color-warning-border);
  color: var(--md-sys-color-on-warning-container);
}

.callout-success {
  background-color: var(--md-sys-color-success-container);
  border-color: var(--md-sys-color-success-border);
  color: var(--md-sys-color-on-success-container);
}

.callout-body {
  flex: 1;
  min-width: 0;
}

/* Forms */
.form-container {
  max-width: 620px;
}

.form-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: var(--fs-body);
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
}

.field-input,
.field-select,
.field-textarea {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-body);
  transition: border-color var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
}

.field-textarea {
  padding: 10px 12px;
  min-height: 76px;
  resize: vertical;
  line-height: 1.45;
}

.field-input:hover,
.field-select:hover,
.field-textarea:hover {
  border-color: var(--md-sys-color-outline-hover);
}

.field-input[aria-invalid="true"] {
  border-color: var(--md-sys-color-error);
}

.input-with-action {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-action .field-input {
  padding-right: 46px;
}

.input-action-btn {
  position: absolute;
  right: 2px;
}

.field-hint {
  margin: 0;
  font-size: var(--fs-label);
  color: var(--md-sys-color-on-surface-variant);
}

.field-error {
  margin: 0;
  font-size: var(--fs-label);
  color: var(--md-sys-color-error);
  display: flex;
  align-items: center;
  gap: 4px;
}

.segmented-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 4px;
  padding: 4px;
  border-radius: var(--radius-md);
  background-color: var(--md-sys-color-surface-container);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.segmented-btn {
  appearance: none;
  min-height: 40px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--fs-body);
  font-weight: 500;
  cursor: pointer;
  padding: 0 10px;
  transition: background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.segmented-btn[aria-checked="true"] {
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-weight: 600;
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  cursor: pointer;
  font-size: var(--fs-body);
}

.checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--md-sys-color-primary);
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 6px;
}

/* Keys Library List */
.key-row {
  display: grid;
  grid-template-columns: minmax(150px, 1.3fr) minmax(180px, 2fr) minmax(140px, 1.5fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 8px 10px;
  border-bottom: var(--border-hairline) solid var(--md-sys-color-outline-variant);
}

.key-hosts-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.host-jump-chip {
  appearance: none;
  min-height: 36px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  cursor: pointer;
}

.host-jump-chip:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.empty-state {
  padding: 40px 16px;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--fs-body);
}

/* Native <dialog> Modals & Sheets */
.modal-dialog {
  width: min(480px, calc(100vw - 24px));
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 22px;
  border-radius: var(--radius-xl);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  overflow-y: auto;
}

.modal-dialog::backdrop {
  background-color: var(--md-sys-color-scrim);
}

.sheet-dialog {
  width: min(500px, calc(100vw - 16px));
  max-height: calc(100dvh - 24px);
  margin: auto;
  padding: 20px;
  border-radius: var(--radius-xl);
  border: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  overflow-y: auto;
}

.sheet-dialog::backdrop {
  background-color: var(--md-sys-color-scrim);
}

.dialog-title {
  margin: 0;
  font-size: var(--fs-title);
  font-weight: 600;
}

/* Toast Live Region */
.toast-region {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: min(380px, calc(100vw - 32px));
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background-color: var(--md-sys-color-surface-container-highest);
  border: var(--border-hairline) solid var(--md-sys-color-outline);
  color: var(--md-sys-color-on-surface);
  font-size: var(--fs-body);
}

.toast-success {
  background-color: var(--md-sys-color-success-container);
  border-color: var(--md-sys-color-success-border);
  color: var(--md-sys-color-on-success-container);
}

.toast-error {
  background-color: var(--md-sys-color-error-container);
  border-color: var(--md-sys-color-error-border);
  color: var(--md-sys-color-on-error-container);
}

/* Medium Window (600px - 840px): Navigation Rail + Dialog Sheet */
@media (max-width: 1120px) {
  .host-row {
    grid-template-columns: minmax(130px, 1.2fr) minmax(170px, 1.7fr) minmax(110px, 1.1fr) auto 132px;
  }

  .host-key-cell,
  .host-date-cell {
    display: none;
  }
}

@media (max-width: 840px) {
  .app-shell {
    grid-template-columns: 76px minmax(0, 1fr);
  }

  .app-nav {
    padding: 12px 6px;
    align-items: center;
  }

  .nav-brand .brand-title,
  .nav-brand .host-pill,
  .nav-count {
    display: none;
  }

  .nav-brand {
    justify-content: center;
    padding: 4px 0;
  }

  .nav-item {
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 6px 4px;
    min-height: 52px;
    width: 64px;
    border-radius: var(--radius-md);
    font-size: var(--fs-label);
    text-align: center;
  }

  .hosts-workspace.has-detail {
    grid-template-columns: minmax(0, 1fr);
  }

  .pane-detail {
    display: none !important;
  }

  .key-row {
    grid-template-columns: minmax(130px, 1fr) minmax(140px, 1.5fr) auto;
  }

  .key-fp-cell {
    display: none;
  }
}

/* Compact Window (< 600px) */
@media (max-width: 599px) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    padding-bottom: 72px;
  }

  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background-color: var(--md-sys-color-surface-container-low);
    border-bottom: var(--border-hairline) solid var(--md-sys-color-outline-variant);
  }

  .app-nav {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    flex-direction: row;
    padding: 4px 8px;
    border-right: 0;
    border-top: var(--border-hairline) solid var(--md-sys-color-outline-variant);
    justify-content: space-around;
  }

  .nav-top {
    flex-direction: row;
    width: 100%;
    justify-content: space-around;
    gap: 4px;
  }

  .nav-brand,
  .nav-bottom {
    display: none;
  }

  .nav-list {
    flex-direction: row;
    width: 100%;
    justify-content: space-around;
  }

  .nav-item {
    flex: 1;
    max-width: 120px;
    width: auto;
    min-height: 52px;
    border-radius: var(--radius-pill);
  }

  .pane-primary {
    padding: 16px 14px 32px;
  }

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

  .btn,
  .field-input,
  .field-select,
  .search-input,
  .toolbar-select,
  .toggle-pill-btn,
  .icon-btn,
  .chip {
    min-height: 48px;
  }

  .icon-btn {
    width: 48px;
    height: 48px;
  }

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

  .host-row {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 6px;
    padding: 10px 6px;
  }

  .host-endpoint-cell {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
  }

  .host-links-cell {
    grid-column: 1 / 2;
    grid-row: 3 / 4;
  }

  .host-status-cell {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
    justify-content: flex-end;
  }

  .host-actions-cell {
    grid-column: 2 / 3;
    grid-row: 2 / 4;
  }

  .key-row {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 6px;
  }

  .key-hosts-wrap {
    grid-column: 1 / -1;
  }

  .sheet-dialog {
    width: 100vw;
    max-width: 100vw;
    margin: auto 0 0 0;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  .toast-region {
    bottom: 76px;
    left: 16px;
    right: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}