/* =============================================================================
   FileTransfer UI — global stylesheet (plain CSS, no build step)
   Layer order: 1) token fallbacks 2) base 3) shell 4) views 5) components
   Dynamic color tokens (--md-sys-color-*) are written by js/core/theme.js at
   boot; the static blocks below are only a fail-safe so the UI stays readable
   if the theme module never runs.
   ============================================================================= */

/* --- 1. Fail-safe light scheme (M3 baseline, seed #6750A4) ------------------ */
:root {
  --md-sys-color-primary: #6750a4;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #eaddff;
  --md-sys-color-on-primary-container: #21005d;
  --md-sys-color-secondary: #625b71;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #e8def8;
  --md-sys-color-on-secondary-container: #1d192b;
  --md-sys-color-tertiary: #7d5260;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-tertiary-container: #ffd8e4;
  --md-sys-color-on-tertiary-container: #31111d;
  --md-sys-color-error: #b3261e;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-error-container: #f9dedc;
  --md-sys-color-on-error-container: #410e0b;
  --md-sys-color-background: #fef7ff;
  --md-sys-color-on-background: #1d1b20;
  --md-sys-color-surface: #fef7ff;
  --md-sys-color-on-surface: #1d1b20;
  --md-sys-color-surface-variant: #e7e0ec;
  --md-sys-color-on-surface-variant: #49454e;
  --md-sys-color-outline: #79747e;
  --md-sys-color-outline-variant: #cac4d0;
  --md-sys-color-shadow: #000000;
  --md-sys-color-scrim: #000000;
  --md-sys-color-inverse-surface: #322f35;
  --md-sys-color-inverse-on-surface: #f5eff7;
  --md-sys-color-inverse-primary: #d0bcff;
  --md-sys-color-surface-dim: #ded8e1;
  --md-sys-color-surface-bright: #fef7ff;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f7f2fa;
  --md-sys-color-surface-container: #f3edf7;
  --md-sys-color-surface-container-high: #ece6f0;
  --md-sys-color-surface-container-highest: #e6e0e9;
}

html[data-theme='dark'] {
  --md-sys-color-primary: #d0bcff;
  --md-sys-color-on-primary: #381e72;
  --md-sys-color-primary-container: #4f378b;
  --md-sys-color-on-primary-container: #eaddff;
  --md-sys-color-secondary: #ccc2dc;
  --md-sys-color-on-secondary: #332d41;
  --md-sys-color-secondary-container: #4a4458;
  --md-sys-color-on-secondary-container: #e8def8;
  --md-sys-color-tertiary: #efb8c8;
  --md-sys-color-on-tertiary: #492532;
  --md-sys-color-tertiary-container: #633b48;
  --md-sys-color-on-tertiary-container: #ffd8e4;
  --md-sys-color-error: #f2b8b5;
  --md-sys-color-on-error: #601410;
  --md-sys-color-error-container: #8c1d18;
  --md-sys-color-on-error-container: #f9dedc;
  --md-sys-color-background: #141218;
  --md-sys-color-on-background: #e6e0e9;
  --md-sys-color-surface: #141218;
  --md-sys-color-on-surface: #e6e0e9;
  --md-sys-color-surface-variant: #49454e;
  --md-sys-color-on-surface-variant: #cac4d0;
  --md-sys-color-outline: #938f99;
  --md-sys-color-outline-variant: #49454e;
  --md-sys-color-shadow: #000000;
  --md-sys-color-scrim: #000000;
  --md-sys-color-inverse-surface: #e6e0e9;
  --md-sys-color-inverse-on-surface: #322f35;
  --md-sys-color-inverse-primary: #6750a4;
  --md-sys-color-surface-dim: #141218;
  --md-sys-color-surface-bright: #3b383e;
  --md-sys-color-surface-container-lowest: #0f0d13;
  --md-sys-color-surface-container-low: #1d1b20;
  --md-sys-color-surface-container: #211f26;
  --md-sys-color-surface-container-high: #2b2930;
  --md-sys-color-surface-container-highest: #36343b;
}

/* --- 2. Reference tokens --------------------------------------------------- */
:root {
  --md-ref-typeface-plain: 'Roboto', 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --md-ref-typeface-brand: var(--md-ref-typeface-plain);
  --md-ref-typeface-mono: 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --md-sys-shape-corner-none: 0;
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 9999px;

  --md-sys-elevation-level0: none;
  --md-sys-elevation-level1: 0 1px 2px 0 rgba(0, 0, 0, .3), 0 1px 3px 1px rgba(0, 0, 0, .15);
  --md-sys-elevation-level2: 0 1px 2px 0 rgba(0, 0, 0, .3), 0 2px 6px 2px rgba(0, 0, 0, .15);
  --md-sys-elevation-level3: 0 1px 3px 0 rgba(0, 0, 0, .3), 0 4px 8px 3px rgba(0, 0, 0, .15);

  --md-sys-motion-easing-emphasized: cubic-bezier(.2, 0, 0, 1);
  --md-sys-motion-easing-emphasized-decelerate: cubic-bezier(.05, .7, .1, 1);
  --md-sys-motion-easing-emphasized-accelerate: cubic-bezier(.3, 0, .8, .15);
  --md-sys-motion-easing-standard: cubic-bezier(.2, 0, 0, 1);
  --md-sys-motion-duration-short4: 200ms;
  --md-sys-motion-duration-medium1: 250ms;
  --md-sys-motion-duration-medium2: 300ms;
  --md-sys-motion-duration-long2: 500ms;

  --ft-appbar-height: 64px;
  --ft-navbar-height: 80px;
  --ft-drawer-width: 280px;
  --ft-content-max: 1120px;
  --ft-gutter: 16px;
}

/* --- 3. Base --------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--md-ref-typeface-plain);
  font-size: 16px;
  line-height: 1.5;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6, p, figure {
  margin: 0;
}

a {
  color: var(--md-sys-color-primary);
}

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

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

:focus-visible {
  outline: 3px solid var(--md-sys-color-secondary);
  outline-offset: 2px;
  border-radius: var(--md-sys-shape-corner-extra-small);
}

.ft-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.ft-skip-link {
  position: absolute;
  inset-inline-start: 8px;
  top: -64px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  text-decoration: none;
  transition: top var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.ft-skip-link:focus {
  top: 8px;
}

.ft-boot {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 100vh;
  color: var(--md-sys-color-on-surface-variant);
}

.ft-boot__logo {
  width: 64px;
  height: 64px;
  animation: ft-boot-pulse 1.6s var(--md-sys-motion-easing-standard) infinite;
}

@keyframes ft-boot-pulse {
  0%, 100% { opacity: .45; transform: scale(.96); }
  50% { opacity: 1; transform: scale(1); }
}

.ft-noscript {
  max-width: 40rem;
  margin: 15vh auto;
  padding: 24px;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

/* --- 3b. App shell extras ------------------------------------------------- */
.ft-appbar__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.ft-offline-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

.ft-offline-banner md-icon {
  --md-icon-size: 20px;
}

.ft-offline-banner md-text-button {
  margin-inline-start: auto;
  --md-text-button-label-text-color: var(--md-sys-color-on-error-container);
}

/* 6-digit pairing code field: scale the internal input through the field's own
   typescale tokens (the shadow DOM input has no public part to target). */
.ft-code-field {
  width: 100%;
  max-width: 320px;
  --md-sys-color-primary: var(--md-sys-color-primary);
  --md-sys-typescale-body-large-size: 2rem;
  --md-sys-typescale-body-large-line-height: 2.5rem;
  --md-sys-typescale-body-large-weight: 500;
  --md-sys-typescale-body-large-font: var(--md-ref-typeface-mono);
}

/* Ripple tokens for the hand-rolled M3 surfaces (nav bar, dropzone, list rows). */
ft-navbar,
.ft-dropzone,
.ft-file-row {
  --md-ripple-hover-color: var(--md-sys-color-on-surface);
  --md-ripple-pressed-color: var(--md-sys-color-on-surface);
  --md-ripple-hover-opacity: 0.08;
  --md-ripple-pressed-opacity: 0.12;
}

ft-navbar .ft-navbar__indicator,
.ft-dropzone {
  position: relative;
  overflow: hidden;
}

.ft-dropzone md-ripple {
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.ft-menurow {
  border-radius: var(--md-sys-shape-corner-small);
}

.ft-search {
  max-width: 420px;
}

/* --- 4. Shell ------------------------------------------------------------- */
.ft-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.ft-appbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: var(--ft-appbar-height);
  padding: 8px var(--ft-gutter);
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.ft-appbar[data-scrolled='true'] {
  background: var(--md-sys-color-surface-container);
  box-shadow: var(--md-sys-elevation-level2);
  border-bottom-color: transparent;
}

.ft-appbar__titles {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ft-appbar__title {
  font-weight: 400;
  color: var(--md-sys-color-on-surface);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ft-appbar__subtitle {
  color: var(--md-sys-color-on-surface-variant);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ft-appbar__actions {
  display: flex;
  align-items: center;
  gap: 2px;
}

.ft-shell {
  flex: 1 1 auto;
  display: flex;
  align-items: stretch;
  width: 100%;
  margin: 0 auto;
}

.ft-drawer {
  display: none;
}

.ft-main {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.ft-view {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--ft-content-max);
  margin: 0 auto;
  padding: var(--ft-gutter) var(--ft-gutter) calc(var(--ft-navbar-height) + 24px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ft-view:focus {
  outline: none;
}

/* Bottom navigation (mobile first, MD3 navigation bar) */
ft-navbar {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 30;
  display: block;
  height: var(--ft-navbar-height);
  background: var(--md-sys-color-surface-container);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

@media (min-width: 900px) {
  ft-navbar {
    display: none;
  }

  .ft-drawer {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 0 0 var(--ft-drawer-width);
    width: var(--ft-drawer-width);
    padding: 12px;
    margin: 0 0 16px 16px;
    position: sticky;
    top: calc(var(--ft-appbar-height) + 12px);
    align-self: flex-start;
    max-height: calc(100vh - var(--ft-appbar-height) - 28px);
    overflow: auto;
    background: var(--md-sys-color-surface-container-low);
    border-radius: var(--md-sys-shape-corner-large);
  }

  .ft-view {
    padding: 16px 24px 48px;
  }
}

/* --- 5. Building blocks --------------------------------------------------- */
.ft-card {
  padding: 16px;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
}

.ft-card--filled {
  background: var(--md-sys-color-surface-container-high);
}

.ft-card--outlined {
  background: transparent;
  border: 1px solid var(--md-sys-color-outline-variant);
}

.ft-card--hero {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 24px;
}

.ft-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.ft-card__head > md-icon {
  color: var(--md-sys-color-primary);
}

.ft-card__title {
  flex: 1 1 auto;
  font-weight: 500;
}

.ft-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ft-section__title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-inline-start: 4px;
  color: var(--md-sys-color-on-surface-variant);
}

.ft-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.ft-row--end {
  justify-content: flex-end;
}

.ft-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ft-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.ft-muted {
  color: var(--md-sys-color-on-surface-variant);
}

.ft-mono {
  font-family: var(--md-ref-typeface-mono);
  letter-spacing: .08em;
}

.ft-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ft-divider {
  height: 1px;
  background: var(--md-sys-color-outline-variant);
  border: 0;
  margin: 4px 0;
}

.ft-kv {
  display: grid;
  grid-template-columns: minmax(96px, max-content) 1fr;
  gap: 6px 16px;
  align-items: baseline;
}

.ft-kv dt {
  color: var(--md-sys-color-on-surface-variant);
}

.ft-kv dd {
  margin: 0;
}

md-outlined-text-field,
md-filled-text-field,
md-outlined-select,
md-filled-select {
  width: 100%;
  max-width: 420px;
}

.ft-field-narrow {
  max-width: 220px;
}

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

.ft-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

.ft-banner--warning {
  background: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
}

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

.ft-banner md-icon {
  flex: 0 0 auto;
}

.ft-banner__text {
  flex: 1 1 auto;
  min-width: 0;
}

/* State blocks (loading / empty / error) */
.ft-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 40px 16px;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-surface-container-low);
}

.ft-state md-icon {
  --md-icon-size: 48px;
  font-size: 48px;
  width: 48px;
  height: 48px;
  color: var(--md-sys-color-outline);
}

.ft-state__title {
  color: var(--md-sys-color-on-surface);
}

/* File list */
.ft-list {
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-surface-container-low);
  overflow: hidden;
  --md-list-container-color: transparent;
}

.ft-file-row {
  cursor: pointer;
}

.ft-file-row md-checkbox {
  margin-inline-end: 4px;
}

.ft-thumb {
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-small);
  object-fit: cover;
  background: var(--md-sys-color-surface-container-highest);
  display: block;
}

.ft-file-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.ft-chipbar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 0 6px;
  scrollbar-width: thin;
}

.ft-toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.ft-toolbar md-outlined-text-field {
  flex: 1 1 260px;
  max-width: 420px;
}

.ft-selectionbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  position: sticky;
  top: calc(var(--ft-appbar-height) + 8px);
  z-index: 10;
  box-shadow: var(--md-sys-elevation-level2);
  flex-wrap: wrap;
}

.ft-selectionbar__count {
  flex: 1 1 auto;
}

/* Upload */
.ft-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 24px;
  text-align: center;
  border: 2px dashed var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-extra-large);
  background: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface-variant);
  transition: background var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard),
    border-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.ft-dropzone[data-active='true'] {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-color: var(--md-sys-color-primary);
}

.ft-dropzone md-icon {
  --md-icon-size: 56px;
  font-size: 56px;
  width: 56px;
  height: 56px;
}

.ft-upload-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 16px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface-container-low);
}

.ft-upload-row__top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ft-upload-row__name {
  flex: 1 1 auto;
  min-width: 0;
}

.ft-upload-row__status {
  color: var(--md-sys-color-on-surface-variant);
  white-space: nowrap;
}

.ft-upload-row[data-status='done'] .ft-upload-row__status {
  color: var(--md-sys-color-primary);
}

.ft-upload-row[data-status='error'] .ft-upload-row__status {
  color: var(--md-sys-color-error);
}

/* Pairing / QR / code */
.ft-code {
  font-family: var(--md-ref-typeface-mono);
  font-size: clamp(2.75rem, 12vw, 4rem);
  line-height: 1.1;
  letter-spacing: .22em;
  font-weight: 500;
  text-indent: .22em;
  color: var(--md-sys-color-on-surface);
}

.ft-qr {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: #ffffff;
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: var(--md-sys-elevation-level1);
  max-width: 320px;
}

.ft-qr svg {
  display: block;
  width: 100%;
  height: auto;
}

.ft-qr--inline {
  max-width: 240px;
}

.ft-codes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
  font-family: var(--md-ref-typeface-mono);
}

.ft-codes span {
  padding: 8px 10px;
  border-radius: var(--md-sys-shape-corner-small);
  background: var(--md-sys-color-surface-container-highest);
  text-align: center;
  letter-spacing: .05em;
}

.ft-swatch {
  width: 20px;
  height: 20px;
  border-radius: var(--md-sys-shape-corner-full);
  border: 1px solid var(--md-sys-color-outline-variant);
}

/* Capability matrix */
.ft-matrix {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: var(--md-sys-shape-corner-medium);
}

.ft-matrix th,
.ft-matrix td {
  padding: 10px 12px;
  text-align: center;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.ft-matrix th:first-child,
.ft-matrix td:first-child {
  text-align: start;
}

.ft-matrix thead th {
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 500;
}

.ft-matrix tbody tr[data-current='true'] {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.ft-matrix md-icon[data-yes] {
  color: var(--md-sys-color-primary);
}

.ft-matrix md-icon[data-no] {
  color: var(--md-sys-color-outline);
}

.ft-matrix-wrap {
  overflow-x: auto;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface-container-low);
}

/* Tabs */
md-tabs {
  width: 100%;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

/* --- 6. ft-snackbar (host component implemented in js/components/snackbar.js) */
ft-snackbar {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 0 16px calc(16px + env(safe-area-inset-bottom, 0));
  pointer-events: none;
}

ft-snackbar .ft-snackbar {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  max-width: 344px;
  padding: 4px 8px 4px 16px;
  border-radius: var(--md-sys-shape-corner-extra-small);
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  box-shadow: var(--md-sys-elevation-level3);
  opacity: 0;
  transform: translateY(16px) scale(.96);
  transition: opacity var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decelerate),
    transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decelerate);
}

ft-snackbar .ft-snackbar[data-open='true'] {
  opacity: 1;
  transform: translateY(0) scale(1);
}

ft-snackbar .ft-snackbar[data-leaving='true'] {
  opacity: 0;
  transform: translateY(8px) scale(.98);
  transition-duration: var(--md-sys-motion-duration-medium1);
  transition-timing-function: var(--md-sys-motion-easing-emphasized-accelerate);
}

ft-snackbar .ft-snackbar__text {
  flex: 1 1 auto;
  padding: 8px 0;
}

ft-snackbar .ft-snackbar__action {
  flex: 0 0 auto;
  --md-text-button-label-text-color: var(--md-sys-color-inverse-primary);
}

@media (max-width: 899px) {
  ft-snackbar {
    padding-bottom: calc(var(--ft-navbar-height) + 16px);
  }

  ft-snackbar .ft-snackbar {
    max-width: none;
    width: 100%;
  }
}

/* --- 7. Navigation bar (ft-navbar) ---------------------------------------- */
ft-navbar .ft-navbar__inner {
  display: flex;
  height: 100%;
  align-items: stretch;
  justify-content: space-around;
  max-width: 640px;
  margin: 0 auto;
}

ft-navbar .ft-navbar__item {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 64px;
  padding: 8px 4px 12px;
  border: 0;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
}

ft-navbar .ft-navbar__indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 32px;
  border-radius: var(--md-sys-shape-corner-full);
  transition: background var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
}

ft-navbar .ft-navbar__item[aria-current='page'] .ft-navbar__indicator {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

ft-navbar .ft-navbar__label {
  font-size: .75rem;
  line-height: 1rem;
  font-weight: 500;
}

ft-navbar .ft-navbar__item[aria-current='page'] .ft-navbar__label {
  color: var(--md-sys-color-on-surface);
}

/* --- 8. Nested screens (scanner overlay, dialogs) ------------------------- */
.ft-scanner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.ft-scanner__video-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 3 / 4;
  border-radius: var(--md-sys-shape-corner-large);
  overflow: hidden;
  background: #000;
}

.ft-scanner__video,
.ft-scanner__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ft-scanner__canvas {
  display: none;
}

.ft-scanner__frame {
  position: absolute;
  inset: 14% 12%;
  border: 3px solid rgba(255, 255, 255, .9);
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, .35);
  pointer-events: none;
}

md-dialog {
  --md-dialog-container-color: var(--md-sys-color-surface-container-high);
  max-width: min(560px, calc(100vw - 32px));
}

md-dialog .ft-dialog-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: min(420px, 78vw);
}

md-dialog .ft-dialog-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

/* --- 9. Responsive / motion / print --------------------------------------- */
@media (max-width: 599px) {
  :root {
    --ft-gutter: 12px;
  }

  .ft-appbar__subtitle {
    display: none;
  }

  md-dialog .ft-dialog-body {
    min-width: min(320px, 80vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

@media (display-mode: standalone) {
  .ft-appbar {
    padding-top: max(8px, env(safe-area-inset-top, 0));
  }
}