:root {
  color-scheme: light;
  --bg: #FBF8F3;
  --surface: #f4fbf6;
  --panel: #ffffff;
  --panel-strong: #eef8f1;
  --panel-soft: #E8F5E9;
  --text: #1A1A2E;
  --muted: #6B6B80;
  --line: #d8e8e0;
  --line-bright: #9fd3bf;
  --accent: #0D7C5C;
  --accent-bright: #14a075;
  --brand-orange: #D4A84B;
  --brand-purple: #0D7C5C;
  --brand-cyan: #14a075;
  --brand-lavender: #cfe9df;
  --warn: #D4A84B;
  --danger: #DA251D;
  --shadow: 0 24px 80px rgb(13 124 92 / 12%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% -8%, rgb(7 193 96 / 12%) 0, transparent 32%),
    radial-gradient(circle at 78% 0%, rgb(95 210 155 / 20%) 0, transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #FBF8F3 56%, #eef5f0 100%);
  color: var(--text);
  font-family:
    "DM Sans", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.34;
  background-image:
    linear-gradient(rgb(7 193 96 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(7 193 96 / 3%) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  display: flex;
  min-height: 100vh;
  height: 100%;
  flex-direction: column;
  gap: 16px;
  padding: 26px 30px 22px;
  position: relative;
}

.topbar,
.meter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.topbar {
  min-height: 120px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.top-right-login {
  padding: 8px 14px;
  border-radius: 10px;
  background: #0D7C5C;
  color: #ffffff;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
  transition: background 0.2s ease, transform 0.2s ease;
}
.top-right-login:hover { background: #095E45; transform: translateY(-1px); }

.mode-tabs {
  display: inline-flex;
  gap: 4px;
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 82%);
  box-shadow: 0 14px 40px rgb(7 193 96 / 10%), inset 0 1px 0 #fff;
  padding: 4px;
}

.mode-tab {
  min-width: 150px;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 12px 18px;
  border-radius: 999px;
  letter-spacing: 0;
}

.mode-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-bright));
  color: #ffffff;
  box-shadow: 0 10px 26px rgb(7 193 96 / 24%);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  flex: 0 0 auto;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-bright));
  color: #ffffff;
  box-shadow: 0 16px 38px rgb(7 193 96 / 30%);
}

.brand-mark svg {
  width: 34px;
  height: 34px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-sub {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.brand-text .mode-tabs {
  margin-top: 16px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-bright);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 1180px;
  font-size: clamp(44px, 5.6vw, 88px);
  font-weight: 760;
  line-height: 0.92;
  letter-spacing: 0;
  color: var(--accent);
}

.status-pill {
  display: inline-flex;
  min-width: 170px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 84%);
  box-shadow: 0 14px 40px rgb(7 193 96 / 10%), inset 0 1px 0 #fff;
  padding: 13px 18px;
  color: var(--muted);
  font-weight: 780;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
}

.status-dot.active {
  background: var(--accent);
  box-shadow: 0 0 0 6px rgb(7 193 96 / 14%);
}

.status-dot.warn {
  background: var(--warn);
}

.status-dot.error {
  background: var(--danger);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: 1fr;
  gap: 16px;
  min-height: 0;
  height: auto;
  flex: 1 1 auto;
}

.workspace.camera-mode {
  grid-template-columns: minmax(420px, 1.32fr) minmax(280px, 0.84fr) minmax(280px, 0.84fr);
}

.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(180deg, #ffffff 0%, rgb(255 255 255 / 88%) 48%, #f6fbf8 100%);
  box-shadow: var(--shadow), inset 0 1px 0 #fff;
  backdrop-filter: blur(18px);
}

.translation-panel {
  background:
    linear-gradient(135deg, rgb(7 193 96 / 8%), transparent 36%),
    linear-gradient(180deg, #ffffff 0%, #f3fbf6 100%);
}

.camera-panel {
  min-height: 0;
}

.camera-stage {
  position: relative;
  overflow: hidden;
  height: calc(100% - 45px);
  min-height: 0;
  background:
    radial-gradient(circle at 50% 50%, rgb(0 197 255 / 14%), transparent 42%),
    #000000;
}

#cameraPreview {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera-subtitle {
  position: absolute;
  right: 22px;
  bottom: 22px;
  left: 22px;
  border: 1px solid rgb(255 255 255 / 18%);
  border-radius: 12px;
  background: rgb(0 24 94 / 74%);
  color: #ffffff;
  font-size: clamp(23px, 2.1vw, 38px);
  font-weight: 800;
  line-height: 1.22;
  padding: 16px 18px 17px;
  text-shadow: 0 2px 12px rgb(0 0 0 / 65%);
  backdrop-filter: blur(16px);
  display: -webkit-box;
  max-height: 3.05em;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.panel-label {
  border-bottom: 1px solid var(--line);
  padding: 15px 18px;
  color: #5e5e5e;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.live-text {
  overflow: auto;
  flex: 1 1 auto;
  min-height: 0;
  padding: 28px 30px;
  font-size: clamp(22px, 2.45vw, 44px);
  font-weight: 780;
  line-height: 1.26;
  overscroll-behavior: contain;
  scrollbar-color: var(--line-bright) transparent;
  scrollbar-width: thin;
}

.live-text::-webkit-scrollbar {
  width: 8px;
}

.live-text::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: var(--line-bright);
}

.translation-text {
  color: var(--accent);
}

.live-text.placeholder,
.camera-subtitle.placeholder {
  color: var(--muted);
  opacity: 0.72;
}

.live-text.placeholder {
  font-size: clamp(22px, 2.1vw, 36px);
  line-height: 1.3;
}

.camera-subtitle.placeholder {
  font-size: clamp(19px, 1.6vw, 28px);
}

.line {
  display: block;
  margin-bottom: 0.62em;
}

.draft {
  color: var(--brand-purple);
  opacity: 0.76;
}



.controls {
  display: grid;
  grid-template-areas: "credentials settings";
  grid-template-columns: minmax(260px, 0.86fr) minmax(640px, 2fr);
  align-items: start;
  align-content: start;
  column-gap: 14px;
  row-gap: 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgb(7 193 96 / 7%), transparent 30%),
    linear-gradient(315deg, rgb(95 210 155 / 14%), transparent 30%),
    rgb(255 255 255 / 88%);
  box-shadow: var(--shadow), inset 0 1px 0 #fff;
  padding: 14px;
  backdrop-filter: blur(18px);
}

.controls.camera-mode {
  grid-template-areas: "credentials settings";
}

.control-group {
  min-width: 0;
  align-self: start;
}

.credentials-group {
  grid-area: credentials;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-right: 14px;
  border-right: 1px solid var(--line);
}

.credentials-group .api-key-label {
  grid-column: auto;
}

.action-group {
  grid-area: actions;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-content: start;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.language-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.settings-group {
  grid-area: settings;
  display: grid;
  min-width: 0;
  gap: 9px;
  padding-inline: 0;
}

.controls.camera-mode .settings-group {
  grid-template-areas:
    "language language language language"
    "camera output output output"
    "visual visual visual frames";
  grid-template-columns: minmax(220px, 0.86fr) minmax(150px, 0.72fr) minmax(220px, 1fr) minmax(118px, 0.48fr);
  column-gap: 10px;
  row-gap: 9px;
}

.controls.camera-mode .language-group {
  grid-area: language;
}

.controls.camera-mode .output-group {
  grid-area: output;
}

.controls.camera-mode .visual-group {
  display: contents;
}

.controls.camera-mode .visual-group > label:nth-child(1) {
  grid-area: camera;
}

.controls.camera-mode .visual-group > label:nth-child(2) {
  grid-area: visual;
}

.controls.camera-mode .visual-group > label:nth-child(3) {
  grid-area: frames;
  max-width: none;
}

.output-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-self: start;
}

.output-fields {
  display: grid;
  grid-template-columns: minmax(170px, 0.74fr) minmax(0, 1.18fr) minmax(0, 1fr);
  align-items: end;
  gap: 10px;
}

.visual-group {
  grid-area: visual;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(190px, 0.62fr) 132px;
  gap: 10px;
}

label {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  color: #5e5e5e;
  font-size: 12px;
  font-weight: 860;
  text-transform: uppercase;
}

label.is-muted {
  opacity: 0.42;
}

.field-label {
  display: block;
  color: #5e5e5e;
  font-size: 12px;
  font-weight: 860;
  line-height: 1.2;
  text-transform: uppercase;
}

.label-with-help {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.help-button {
  display: inline-grid;
  width: 18px;
  min-width: 18px;
  height: 18px;
  min-height: 18px;
  place-items: center;
  border: 1px solid var(--line-bright);
  border-radius: 50%;
  background: rgb(255 255 255 / 84%);
  box-shadow: inset 0 1px 0 #fff;
  color: var(--accent);
  font-size: 11px;
  font-weight: 900;
  line-height: 1;
  padding: 0;
}

.help-button:hover,
.help-button:focus-visible {
  border-color: var(--accent-bright);
  background: #e9f7ef;
  box-shadow: 0 0 0 4px rgb(7 193 96 / 12%);
}

.switch-field {
  min-width: 0;
}

.api-key-label {
  min-width: 0;
}

.api-key-field {
  position: relative;
  display: block;
}

input,
select {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(255 255 255 / 86%);
  color: var(--text);
  outline: none;
  padding: 11px 13px;
  box-shadow: inset 0 1px 0 #fff;
}

input:focus,
select:focus {
  border-color: rgb(7 193 96 / 70%);
  box-shadow: 0 0 0 4px rgb(7 193 96 / 12%);
}

.api-key-input {
  min-width: 0;
  width: 100%;
  padding-right: 46px;
}

.icon-button {
  position: absolute;
  right: 8px;
  bottom: 6px;
  display: grid;
  width: 32px;
  min-width: 32px;
  height: 32px;
  min-height: 32px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  box-shadow: none;
  color: var(--muted);
  font-size: 24px;
  line-height: 1;
  padding: 0;
}

.icon-button:hover {
  background: #e9f7ef;
  color: var(--accent);
}

input:disabled,
select:disabled {
  opacity: 0.45;
}

.toggle {
  display: flex;
  min-height: 44px;
  justify-content: space-between;
  flex-direction: row;
  align-items: center;
  align-self: end;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 76%);
  padding: 8px 10px 8px 15px;
  user-select: none;
}

.compact-toggle {
  min-height: 44px;
  width: 100%;
  min-width: 0;
  justify-content: center;
  align-self: center;
  gap: 10px;
  padding: 8px 14px;
  background: rgb(255 255 255 / 70%);
}

.output-toggle {
  margin-left: 0;
}

.toggle span {
  display: inline-flex;
  height: 22px;
  align-items: center;
  overflow: hidden;
  color: var(--text);
  font-size: 12px;
  font-weight: 860;
  line-height: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toggle input[type="checkbox"] {
  position: relative;
  width: 42px;
  min-width: 42px;
  height: 24px;
  min-height: 24px;
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: #bfe6cf;
  cursor: pointer;
  padding: 0;
  transition: background 160ms ease;
}

.toggle input[type="checkbox"]::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 8px rgb(7 193 96 / 18%);
  content: "";
  transition: transform 160ms ease;
}

.toggle input[type="checkbox"]:checked {
  background: linear-gradient(135deg, var(--accent), var(--accent-bright));
}

.toggle input[type="checkbox"]:checked::after {
  transform: translateX(18px);
}

.toggle input[type="checkbox"]:disabled {
  opacity: 1;
  background: #e3e7f5;
}

.compact-toggle input[type="checkbox"] {
  width: 38px;
  min-width: 38px;
  height: 22px;
  min-height: 22px;
}

.compact-toggle input[type="checkbox"]::after {
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
}

.compact-toggle input[type="checkbox"]:checked::after {
  transform: translateX(16px);
}

.compact-control {
  max-width: 140px;
}

button {
  min-width: 108px;
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-bright));
  color: #ffffff;
  cursor: pointer;
  font-weight: 850;
  padding: 12px 18px;
  box-shadow: 0 14px 28px rgb(7 193 96 / 22%);
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    background 140ms ease;
}

.action-group button {
  min-height: 52px;
  width: 100%;
}

.primary-action {
  order: 1;
}

.danger-action {
  order: 2;
}

.action-group .secondary-button {
  order: 3;
}

.secondary-button {
  min-height: 52px;
}

button:not(:disabled):hover {
  transform: translateY(-1px);
}

button:disabled {
  background: #d8ecdf;
  color: #7fa890;
  cursor: not-allowed;
  box-shadow: none;
}

[hidden] {
  display: none !important;
}

#stopButton {
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-purple));
  color: #fff;
}

#clearButton {
  border: 1px solid var(--line-bright);
  background: #ffffff;
  color: var(--accent);
}

.meter {
  overflow: hidden;
  width: min(34vw, 460px);
  height: 10px;
  border-radius: 999px;
  background: #d4ecdd;
}

#levelBar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--brand-cyan), var(--brand-lavender));
  transition: width 80ms linear;
}

.metrics {
  max-width: 72vw;
  color: var(--muted);
  font-size: 14px;
}

.social-footer {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 84%);
  box-shadow: 0 12px 34px rgb(7 193 96 / 9%), inset 0 1px 0 #fff;
  padding: 6px;
}

.social-link {
  position: relative;
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  color: var(--text);
  font-size: 13px;
  font-weight: 850;
  line-height: 1;
  padding: 8px 12px 8px 10px;
  text-decoration: none;
}

.social-link:hover,
.social-link:focus-visible {
  background: #e9f7ef;
  color: var(--accent);
  outline: none;
}

.social-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.github-qr-popover {
  position: absolute;
  right: 0;
  bottom: calc(100% + 12px);
  display: grid;
  width: 172px;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgb(255 255 255 / 94%);
  box-shadow: 0 18px 48px rgb(7 193 96 / 18%), inset 0 1px 0 #fff;
  opacity: 0;
  padding: 12px;
  pointer-events: none;
  transform: translateY(6px);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
  z-index: 4;
}

.github-qr-popover img {
  width: 148px;
  height: 148px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 4px;
}

.github-qr-popover span {
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  font-weight: 780;
  line-height: 1.15;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.social-link:hover .github-qr-popover,
.social-link:focus-visible .github-qr-popover {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .app-shell {
    padding: 18px;
  }

  .topbar,
  .meter-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar {
    min-height: auto;
  }

  .workspace {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(300px, 38vh);
    height: auto;
  }

  .workspace.camera-mode {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(300px, 38vh);
  }

  .panel {
    min-height: 300px;
  }

  .api-key-input,
  .meter {
    width: 100%;
  }

  .metrics {
    max-width: 100%;
  }

  .social-footer {
    width: 100%;
    justify-content: center;
  }

  .github-qr-popover {
    right: 50%;
    transform: translate(50%, 6px);
  }

  .social-link:hover .github-qr-popover,
  .social-link:focus-visible .github-qr-popover {
    transform: translate(50%, 0);
  }

  .controls {
    grid-template-areas:
      "credentials"
      "settings"
      "visual"
      "actions";
    grid-template-columns: 1fr;
  }

  .controls.camera-mode {
    grid-template-areas:
      "credentials"
      "settings"
      "actions";
  }

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

  .controls.camera-mode .settings-group {
    grid-template-areas: none;
    grid-template-columns: 1fr;
  }

  .controls.camera-mode .language-group,
  .controls.camera-mode .output-group,
  .controls.camera-mode .visual-group > label {
    grid-area: auto;
  }

  .controls.camera-mode .visual-group {
    display: grid;
  }

  .output-group {
    grid-template-columns: 1fr;
  }

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

  .credentials-group {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    border-right: 0;
    padding-right: 0;
  }

  .action-group {
    grid-template-columns: 1fr 1fr 1fr;
    border-left: 0;
    padding-left: 0;
  }

  .action-group .secondary-button {
    grid-column: auto;
  }

  .mode-tabs {
    width: 100%;
  }

  .mode-tab {
    flex: 1;
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .language-group,
  .output-fields,
  .visual-group,
  .credentials-group,
  .settings-group,
  .action-group {
    grid-template-columns: 1fr;
  }

  .compact-toggle {
    width: 100%;
  }
}

@media (max-height: 820px) and (min-width: 981px) {
  .app-shell {
    gap: 12px;
    padding-block: 18px;
  }

  .topbar {
    min-height: 92px;
  }

  h1 {
    font-size: clamp(42px, 5vw, 72px);
  }

  .mode-tabs {
    margin-top: 14px;
  }

  .workspace {
    min-height: 300px;
  }

  .camera-panel {
    min-height: 300px;
  }

  .camera-stage {
    min-height: 254px;
  }

  .live-text {
    padding: 24px 26px;
  }

  .controls {
    padding: 14px;
  }
}

/* === Iframe embed (hero): stack controls vertically so 开始/停止/清空 fit === */
@media (max-width: 1100px) {
  .controls {
    grid-template-areas:
      "credentials"
      "settings"
      "actions";
    grid-template-columns: minmax(0, 1fr);
    align-content: start;
  }
  .action-group {
    justify-content: stretch;
    gap: 10px;
  }
  .action-group button {
    flex: 1 1 0;
    min-width: 0;
  }
  .settings-group {
    grid-template-columns: 1fr;
  }
  .settings-group .control-group {
    flex-wrap: wrap;
  }
  .output-fields {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   横屏布局：原文/译文左右并排 + 控件横向 + 紧凑尺寸
   仅在大屏（宽 ≥ 769px，含桌面 iframe 与横屏手机）生效；
   窄屏（手机竖屏）交给下方 max-width 媒体查询做单列竖排。
   ============================================================ */
@media (min-width: 769px) {
.app-shell {
  display: flex !important;
  flex-direction: column !important;
  gap: 10px !important;
  padding: 14px 18px !important;
  height: 100% !important;
  min-height: 100% !important;
}

/* 顶部品牌区紧凑 */
.topbar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 10px !important;
  flex-shrink: 0 !important;
  min-height: auto !important;
}
.brand-block {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
}
.brand-mark {
  width: 32px !important;
  height: 32px !important;
  border-radius: 10px !important;
  flex-shrink: 0 !important;
}
.brand-mark svg {
  width: 16px !important;
  height: 16px !important;
}
.brand-text {
  min-width: 0 !important;
}
h1 {
  font-size: 14px !important;
  line-height: 1.1 !important;
  margin: 0 !important;
}
.brand-sub {
  margin-top: 1px !important;
  font-size: 10px !important;
}
.brand-text .mode-tabs {
  margin-top: 4px !important;
}
.mode-tab {
  padding: 4px 10px !important;
  font-size: 11px !important;
  min-width: 80px !important;
}
.status-pill {
  min-width: 0 !important;
  padding: 4px 8px !important;
  font-size: 10px !important;
  gap: 4px !important;
  flex-shrink: 0 !important;
}

/* 工作区：原文 / 译文 永远左右并排，自动填充剩余空间 */
.workspace {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) !important;
  grid-template-rows: 1fr !important;
  gap: 8px !important;
  flex: 1 1 auto !important;
  min-height: 0 !important;
  height: auto !important;
}
.workspace.camera-mode {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1fr) !important;
}
.panel:not([hidden]) {
  min-height: 0 !important;
  border-radius: 8px !important;
  display: flex !important;
  flex-direction: column !important;
}
.panel[hidden] {
  display: none !important;
}
.panel-label {
  padding: 10px 16px !important;
  font-size: 11px !important;
  flex-shrink: 0 !important;
}
.live-text {
  padding: 20px 24px !important;
  font-size: clamp(20px, 2.2vw, 36px) !important;
  line-height: 1.35 !important;
  flex: 1 1 auto !important;
  min-height: 0 !important;
}

/* 控件区：Grid 4 列 × 2 行；credentials / region / action 跨两行垂直居中 */
.controls {
  display: grid !important;
  grid-template-columns: auto auto 1fr auto;
  grid-template-rows: auto auto;
  grid-template-areas:
    "credentials region settings actions"
    "credentials region settings actions";
  align-items: center;
  column-gap: 8px !important;
  row-gap: 6px !important;
  padding: 8px 10px !important;
  border-radius: 8px !important;
  flex-shrink: 0 !important;
}
.credentials-group {
  grid-area: credentials;
  grid-row: span 2;
  display: flex !important;
  align-items: center !important;
  gap: 6px;
  padding-right: 0 !important;
  border-right: none !important;
}
.credentials-group #accountEmail {
  flex: 1;
  min-width: 0;
  font-size: 10px !important;
}
.credentials-group #loginBtn {
  padding: 5px 10px !important;
  font-size: 10px !important;
}
.region-group {
  grid-area: region;
  grid-row: span 2;
}
.settings-group {
  grid-area: settings;
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "language language"
    "output output";
  align-items: center;
  column-gap: 6px !important;
  row-gap: 5px !important;
}
.settings-group .language-group {
  grid-area: language;
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.settings-group .output-group {
  grid-area: output;
  display: grid !important;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}
.settings-group .visual-group {
  display: none !important;
}
.output-fields {
  display: contents !important;
}
.action-group {
  grid-area: actions;
  grid-row: span 2;
  display: flex !important;
  flex-direction: row !important;
  align-items: stretch;
  gap: 4px !important;
  padding-left: 0 !important;
  border-left: none !important;
}
.action-group button {
  flex: 1 1 0;
  min-width: 0;
  padding: 6px 8px !important;
  font-size: 11px !important;
  min-height: 36px !important;
}

/* 页脚紧凑 */
.meter-row {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 6px !important;
  padding: 5px 8px !important;
  font-size: 10px !important;
  flex-shrink: 0 !important;
}
.meter {
  width: min(26vw, 300px) !important;
  height: 6px !important;
}
} /* end @media (min-width: 769px) 横屏布局 */

/* =============================================
   第一屏容器：桌面透明不影响布局；移动端撑满 100vh
   ============================================= */
.first-screen { display: contents; }

/* 操作按钮栏（开始/停止/清空） */
.action-bar {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  flex-shrink: 0;
}
.action-bar button {
  flex: 1 1 0;
  min-width: 0;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 14px;
  border-radius: 10px;
}

/* 设置标题：桌面隐藏，移动端显示 */
.settings-heading { display: none; }

/* =============================================
   Demo 移动端：第一屏 = 工作台(原文/译文)，第二屏 = 设置
   ============================================= */
@media (max-width: 768px) {
  /* 第一屏容器撑满 100vh（顶栏+工作台+开始按钮），设置区落到第一屏外 */
  .app-shell { gap: 10px; padding: 12px 14px 14px; }
  .first-screen { min-height: 100vh; display: flex; flex-direction: column; }
  .action-bar { margin-top: 10px; }
  .topbar { min-height: 0; flex-wrap: wrap; align-items: center; gap: 6px; }
  .topbar h1 { font-size: clamp(15px, 4vw, 19px); line-height: 1.2; }
  .mode-tabs { margin-top: 6px; }
  .mode-tab { min-width: 0; padding: 7px 12px; font-size: 13px; }

  /* 工作台：第一屏，只显示原文/译文；不 flex 撑满，让开始按钮紧贴下方 */
  .workspace {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(160px, auto);
    min-height: 0;
    flex: none;
  }
  .workspace.camera-mode { grid-template-columns: 1fr; }
  .panel { min-height: 240px; border-radius: 10px; }
  .panel-label { display: none; }
  .live-text { padding: 18px 20px; font-size: clamp(18px, 4.8vw, 26px); line-height: 1.5; }
  .live-text.placeholder { font-size: clamp(15px, 4vw, 20px); }

  /* 设置区：第二屏，标题 + 分隔线 */
  .settings-heading {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #0D7C5C;
    margin: 22px 0 8px;
    padding-top: 14px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    letter-spacing: 0.5px;
  }
  .controls { padding: 10px; }
  .credentials-group { flex-direction: column !important; align-items: stretch !important; }
  .action-group { flex-wrap: wrap; }
  .meter-row { flex-wrap: wrap; gap: 8px; font-size: 11px; }
}

@media (max-width: 480px) {
  .app-shell { padding: 10px 8px 8px; gap: 8px; }
  .topbar h1 { font-size: clamp(22px, 6vw, 28px); }
  .mode-tab { padding: 8px 10px; font-size: 12px; }
  .live-text { padding: 16px 16px; font-size: clamp(16px, 4.5vw, 22px); }
  .live-text.placeholder { font-size: clamp(14px, 4vw, 18px); }
  .panel { min-height: 240px; }
  .controls { padding: 8px; }
  .meter-row { flex-direction: column; gap: 6px; font-size: 11px; }
}