/* OpenedMic v1.1 beta live-room interface layer.
   The layer is scoped to body.d4-app and preserves every runtime contract. */

body.d4-app {
  --d4-canvas: #f2f4f1;
  --d4-canvas-muted: #e7eae6;
  --d4-surface: #fbfcfa;
  --d4-surface-raised: #ffffff;
  --d4-surface-strong: #141814;
  --d4-text: #111511;
  --d4-text-muted: #111511;
  --d4-text-soft: #111511;
  --d4-border: #ccd2cc;
  --d4-border-strong: #aeb7af;
  --d4-signal: #d53229;
  --d4-signal-hover: #bc271f;
  --d4-signal-bright: #ff766b;
  --d4-signal-soft: #f7e4e1;
  --d4-cta: #c41616;
  --d4-cta-hover: #a91111;
  --d4-success: #14724f;
  --d4-warning: #8b5f00;
  --d4-info: #2f6f73;
  --d4-error: #b4233f;
  --d4-focus: #c62f27;
  --d4-radius-control: 10px;
  --d4-radius-surface: 16px;
  --d4-radius-round: 999px;
  --d4-shadow: 0 18px 56px rgb(28 35 29 / 0.09);
  --d4-shadow-raised: 0 28px 88px rgb(28 35 29 / 0.13);
  display: block;
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
  overflow-x: clip;
  background:
    linear-gradient(90deg, transparent 0 24px, rgb(17 21 17 / 0.025) 24px 25px, transparent 25px 100%),
    var(--d4-canvas);
  background-size: 96px 100%;
  color: var(--d4-text);
  color-scheme: light;
  font-family: var(--om-font-sans);
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

body.d4-app *,
body.d4-app *::before,
body.d4-app *::after {
  box-sizing: border-box;
}

body.d4-app button,
body.d4-app input,
body.d4-app select,
body.d4-app textarea {
  font: inherit;
}

body.d4-app :focus-visible {
  outline: 3px solid var(--d4-focus) !important;
  outline-offset: 3px !important;
}

body.d4-app .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-auto-rows: max-content;
  align-content: start;
  width: min(100% - 48px, 1520px);
  max-width: none;
  min-height: 100dvh;
  margin-inline: auto;
  padding-block: 22px 48px;
}

body.d4-app .logo {
  display: flex;
  grid-column: 1;
  align-items: center;
  min-height: 52px;
  padding: 0;
  text-align: start;
}

body.d4-app .logo h1 {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  margin: 0;
  color: var(--d4-text);
  font-family: var(--om-font-sans);
  font-size: 1rem;
  font-weight: 760;
  letter-spacing: -0.045em;
  line-height: 1;
  text-shadow: none;
}

body.d4-app .logo h1 .mic-icon,
body.d4-app .logo p,
body.d4-app .logo > div:not(.on-air-pill):not(.release-version),
body.d4-app .logo .on-air-pill {
  display: none;
}

body.d4-app .logo .release-version {
  display: inline-flex !important;
  align-items: center;
  min-height: 20px;
  margin-inline-start: 10px;
  padding: 3px 6px;
  border: 1px solid var(--d4-signal);
  border-radius: 3px;
  color: var(--d4-signal);
  font-family: var(--om-font-mono);
  font-size: 0.625rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

body.d4-app .logo h1 .word-open,
body.d4-app .logo h1 .word-ed {
  color: var(--d4-text);
  font-size: inherit;
  vertical-align: baseline;
}

body.d4-app .logo h1 .word-mic {
  color: var(--d4-signal);
  text-shadow: none;
}

body.d4-app #lang-toggle-bar {
  display: flex !important;
  grid-column: 2;
  align-items: center;
  justify-content: flex-end !important;
  min-height: 52px;
  padding: 0 !important;
}

body.d4-app #lang-select {
  min-width: 178px;
  min-height: 42px;
  padding: 0 40px 0 14px !important;
  border: 1px solid var(--d4-border-strong) !important;
  border-radius: var(--d4-radius-round) !important;
  background-color: var(--d4-surface-raised) !important;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%235e675f'/%3E%3C/svg%3E") !important;
  color: var(--d4-text) !important;
  font-family: var(--om-font-sans) !important;
  font-size: 0.875rem !important;
  font-weight: 680 !important;
  letter-spacing: 0 !important;
  box-shadow: none;
}

body.d4-app #lang-select option,
body.d4-app #lang-select optgroup {
  background: var(--d4-surface-raised);
  color: var(--d4-text);
}

body.d4-app #network-status,
body.d4-app #home-panel,
body.d4-app #broadcast-setup-panel,
body.d4-app #listener-setup-panel,
body.d4-app #mode-panel,
body.d4-app #broadcast-panel,
body.d4-app #listen-panel,
body.d4-app #reactions-overlay,
body.d4-app #broadcast-reactions,
body.d4-app #toast-container {
  grid-column: 1 / -1;
}

body.d4-app #network-status:not([hidden]) {
  display: flex;
  align-items: center;
  min-height: 44px;
  margin-block: 8px 16px;
  padding: 10px 14px;
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-control);
  background: var(--d4-surface);
  color: var(--d4-text-muted);
}

body.d4-app .card {
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
  box-shadow: var(--d4-shadow);
}

body.d4-app .sec {
  margin-block: 18px 10px;
  padding-block-end: 8px;
  border-color: var(--d4-border);
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  font-size: 0.75rem;
  font-weight: 740;
  letter-spacing: 0.08em;
  line-height: 1.25;
}

body.d4-app .sec::after {
  background: var(--d4-signal);
}

body.d4-app .field,
body.d4-app .chat-input {
  min-height: 48px;
  border: 1px solid var(--d4-border-strong);
  border-radius: var(--d4-radius-control);
  background: var(--d4-surface);
  color: var(--d4-text);
  box-shadow: none;
}

body.d4-app .field::placeholder,
body.d4-app .chat-input::placeholder {
  color: var(--d4-text-soft);
}

body.d4-app .field:focus,
body.d4-app .chat-input:focus {
  border-color: var(--d4-text);
  background: var(--d4-surface-raised);
}

body.d4-app .btn,
body.d4-app .chat-send-btn,
body.d4-app #listener-terminal-action-btn,
body.d4-app #retry-listen-btn {
  border-radius: var(--d4-radius-round) !important;
  box-shadow: none !important;
  text-transform: none;
  letter-spacing: 0;
  transition:
    background-color 180ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 180ms cubic-bezier(0.16, 1, 0.3, 1),
    color 180ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

body.d4-app .sb,
body.d4-app .rt-btn,
body.d4-app .av-btn,
body.d4-app #sound-settings-btn,
body.d4-app #btn-chat-toggle,
body.d4-app .guest-mic-panel button {
  border-radius: var(--d4-radius-control) !important;
  box-shadow: none !important;
  text-transform: none;
  letter-spacing: 0;
}

/* Once a room surface owns the session, keep the entry surface out of view. */
body.d4-app:has(#broadcast-panel[data-broadcast-state="ready"]) #home-panel,
body.d4-app:has(#broadcast-panel[data-broadcast-state="starting"]) #home-panel,
body.d4-app:has(#broadcast-panel[data-broadcast-state="live"]) #home-panel,
body.d4-app:has(#broadcast-panel[data-broadcast-state="reconnecting"]) #home-panel,
body.d4-app:has(#broadcast-panel[data-broadcast-state="error"]) #home-panel,
body.d4-app:has(#listen-panel[data-room-active="true"]) #home-panel {
  display: none !important;
}

body.d4-app .btn {
  min-height: 50px;
  padding-inline: 24px;
  font-family: var(--om-font-sans);
  font-size: 0.95rem;
  font-weight: 720;
}

body.d4-app .btn-primary {
  border: 1px solid var(--d4-cta);
  background: var(--d4-cta);
  color: #ffffff;
}

body.d4-app .btn-primary:hover {
  border-color: var(--d4-cta-hover);
  background: var(--d4-cta-hover);
  filter: none;
  transform: translateY(-1px);
}

body.d4-app .btn-secondary {
  border: 1px solid var(--d4-border-strong);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
}

body.d4-app .btn-secondary:hover {
  border-color: var(--d4-text);
  background: var(--d4-surface);
}

body.d4-app .btn:active,
body.d4-app .sb:active,
body.d4-app .rt-btn:active,
body.d4-app .av-btn:active,
body.d4-app .guest-mic-panel button:active {
  transform: translateY(1px) scale(0.985);
}

body.d4-app .btn-ghost {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin: 8px 0 12px;
  padding-inline: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  font-size: 0.875rem;
  font-weight: 680;
  text-decoration: underline;
  text-decoration-color: var(--d4-border-strong);
  text-underline-offset: 4px;
}

body.d4-app .btn-ghost:hover {
  background: transparent;
  color: var(--d4-text);
  text-decoration-color: var(--d4-signal);
}

/* Entry */

body.d4-app #home-panel {
  display: grid;
  min-height: calc(100dvh - 126px);
  place-items: center;
  padding-block: 48px 80px;
}

body.d4-app #home-panel .card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  grid-template-rows: auto auto auto minmax(22px, auto);
  width: min(100%, 1080px);
  margin: 0;
  padding: clamp(36px, 5vw, 64px);
  column-gap: clamp(40px, 7vw, 96px);
  row-gap: 8px;
  box-shadow: var(--d4-shadow-raised);
}

body.d4-app #home-panel .card > .sec,
body.d4-app #home-panel .card > .field,
body.d4-app #home-panel .card > #username-helper,
body.d4-app #home-panel .card > #username-error {
  grid-column: 1;
}

body.d4-app #home-panel .card > .sec {
  margin-top: 0;
  color: var(--d4-text);
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-weight: 680;
  letter-spacing: -0.045em;
  text-transform: none;
}

body.d4-app #home-panel .card > .sec::after {
  display: none;
}

body.d4-app #home-panel #username-helper {
  color: var(--d4-text-muted) !important;
  font-size: 0.9rem !important;
}

body.d4-app #home-panel .card > .divider {
  display: none;
}

body.d4-app #home-panel .card > div:nth-last-child(1) {
  display: grid !important;
  grid-column: 2;
  grid-row: 1 / span 4;
  align-content: center;
  gap: 14px !important;
  margin: 0 !important;
  padding-inline-start: clamp(32px, 4vw, 56px);
  border-inline-start: 1px solid var(--d4-border);
}

body.d4-app #home-panel .card > div:nth-last-child(1) .btn {
  margin: 0;
}

body.d4-app #home-panel + div,
body.d4-app #home-panel > div + div {
  color: var(--d4-text-muted);
}

body.d4-app #home-panel > div[style*="text-align:center"] {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

body.d4-app #landing-link,
body.d4-app #home-panel a[href="/contact.html"],
body.d4-app #pwa-install-btn {
  min-height: 38px;
  margin: 0 !important;
  padding-inline: 14px !important;
  border-color: var(--d4-border) !important;
  border-radius: var(--d4-radius-round) !important;
  background: var(--d4-surface) !important;
  color: var(--d4-text-muted) !important;
  font-family: var(--om-font-sans) !important;
  font-size: 0.75rem !important;
  font-weight: 680 !important;
  letter-spacing: 0 !important;
  text-transform: none !important;
}

/* Setup and mode selection */

body.d4-app #broadcast-setup-panel,
body.d4-app #listener-setup-panel {
  width: min(100%, 900px);
  margin-inline: auto;
  padding-block: 64px;
}

body.d4-app #broadcast-setup-panel > div:first-child {
  border-color: color-mix(in srgb, var(--d4-info) 38%, transparent) !important;
  border-radius: var(--d4-radius-control) !important;
  background: color-mix(in srgb, var(--d4-info) 8%, transparent) !important;
}

body.d4-app #bt-tip {
  color: var(--d4-info) !important;
}

body.d4-app #broadcast-setup-panel .card,
body.d4-app #listener-setup-panel .card {
  padding: 36px;
}

body.d4-app .rt-row {
  gap: 10px;
}

body.d4-app .rt-btn,
body.d4-app .av-btn {
  min-height: 52px;
  border: 1px solid var(--d4-border-strong);
  background: var(--d4-surface);
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  font-weight: 680;
}

body.d4-app .rt-btn.active,
body.d4-app .av-btn.picked {
  border-color: var(--d4-signal);
  background: var(--d4-signal-soft);
  color: var(--d4-signal-hover);
}

body.d4-app #mode-panel {
  width: min(100%, 1280px);
  margin-inline: auto;
  padding-block: 40px 72px;
}

body.d4-app #mode-panel .card {
  padding: 36px;
}

body.d4-app .mode-intro {
  max-width: 720px;
  margin: 0;
  color: var(--d4-text-muted);
  font-size: 0.9rem;
  font-weight: 520;
  line-height: 1.55;
}

body.d4-app .mode-selector-shell {
  margin-block: 28px 0;
}

body.d4-app .mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: auto;
  align-items: start;
  gap: 30px 24px;
  margin: 0;
}

body.d4-app .mode-group {
  min-width: 0;
}

body.d4-app .mode-group-special {
  grid-column: 1 / -1;
}

body.d4-app .mode-group-title {
  margin: 0 0 10px;
  padding-block-end: 9px;
  border-block-end: 1px solid var(--d4-border-strong);
  color: var(--d4-text);
  font-family: var(--om-font-sans);
  font-size: 0.76rem;
  font-weight: 740;
  letter-spacing: 0.015em;
  line-height: 1.35;
}

body.d4-app .mode-group-list {
  display: grid;
  gap: 10px;
}

body.d4-app .mode-group-special .mode-group-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body.d4-app .mode-card {
  --mode-active-accent: var(--mode-accent);
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) auto;
  align-items: center;
  gap: 15px;
  min-height: 92px;
  padding: 13px;
  border: 1px solid var(--d4-border);
  border-radius: 13px;
  background: var(--d4-surface-raised);
  color: var(--d4-text);
  text-align: start;
  box-shadow: 0 8px 26px rgb(28 35 29 / 0.045);
  transition:
    border-color 160ms cubic-bezier(0.16, 1, 0.3, 1),
    background-color 160ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 160ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 160ms cubic-bezier(0.16, 1, 0.3, 1);
}

body.d4-app .mode-card:hover {
  border-color: color-mix(in srgb, var(--mode-active-accent) 52%, var(--d4-border));
  background: color-mix(in srgb, var(--mode-active-accent) 4%, var(--d4-surface-raised));
  box-shadow: 0 14px 34px rgb(28 35 29 / 0.09);
  transform: translateY(-1px);
}

body.d4-app .mode-card.selected {
  border-color: var(--d4-signal);
  background: color-mix(in srgb, var(--d4-signal) 6%, var(--d4-surface-raised));
  box-shadow: 0 0 0 1px var(--d4-signal), 0 14px 34px rgb(28 35 29 / 0.08);
}

body.d4-app .mode-mark {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border: 0;
  border-radius: 12px;
  background: color-mix(in srgb, var(--mode-accent) 90%, #172019);
  color: #f7f9f6;
  box-shadow:
    inset 0 0 0 1px rgb(255 255 255 / 0.2),
    0 7px 16px color-mix(in srgb, var(--mode-accent) 18%, transparent);
}

body.d4-app .mode-mark::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block-start: -18px;
  inset-inline-end: -15px;
  width: 48px;
  height: 48px;
  border: 1px solid rgb(255 255 255 / 0.22);
  border-radius: 50%;
  background: rgb(255 255 255 / 0.08);
}

body.d4-app .mode-mark::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset-inline-start: 11px;
  inset-block-end: 8px;
  width: 23px;
  height: 3px;
  border-radius: 2px;
  background: rgb(255 255 255 / 0.44);
}

body.d4-app .mode-mark-icon {
  width: 33px;
  height: 33px;
  background: currentColor;
  -webkit-mask: var(--mode-icon) center / contain no-repeat;
  mask: var(--mode-icon) center / contain no-repeat;
  transform: translateY(-2px);
}

body.d4-app #mode-lecturer {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/presentation.svg");
  --mode-accent: #9b332d;
  --mode-accent-dark: #ff9188;
}

body.d4-app #mode-outdoor {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/route.svg");
  --mode-accent: #167064;
  --mode-accent-dark: #6ed8c7;
}

body.d4-app #mode-meeting {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/briefcase-2.svg");
  --mode-accent: #295a8a;
  --mode-accent-dark: #7fb3ea;
}

body.d4-app #mode-podcast {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/microphone-2.svg");
  --mode-accent: #9a3e61;
  --mode-accent-dark: #ef92b4;
}

body.d4-app #mode-music {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/music.svg");
  --mode-accent: #59479a;
  --mode-accent-dark: #aaa0ff;
}

body.d4-app #mode-party {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/confetti.svg");
  --mode-accent: #a75d09;
  --mode-accent-dark: #ffb55d;
}

body.d4-app #mode-ceremony {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/building-community.svg");
  --mode-accent: #647034;
  --mode-accent-dark: #bdcb70;
}

body.d4-app #mode-memorial {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/candle.svg");
  --mode-accent: #765276;
  --mode-accent-dark: #d9a4da;
}

body.d4-app #mode-multizone {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/speakerphone.svg");
  --mode-accent: #33715a;
  --mode-accent-dark: #78d5ae;
}

body.d4-app #mode-custom {
  --mode-icon: url("/assets/vendor/tabler-icons/outline/adjustments-horizontal.svg");
  --mode-accent: #59616e;
  --mode-accent-dark: #adb7c6;
}

body.d4-app .mode-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 5px;
}

body.d4-app .mode-name {
  color: var(--d4-text);
  font-family: var(--om-font-sans);
  font-size: 0.94rem;
  font-weight: 740;
  letter-spacing: -0.012em;
  line-height: 1.25;
}

body.d4-app .mode-card.selected .mode-name {
  color: var(--d4-text);
}

body.d4-app .mode-desc {
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.42;
}

body.d4-app .mode-selected-label {
  display: none;
  align-items: center;
  gap: 6px;
  color: var(--d4-signal-hover);
  font-size: 0.66rem;
  font-weight: 740;
  white-space: nowrap;
}

body.d4-app .mode-selected-label::before {
  content: "✓";
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 0.7rem;
  line-height: 1;
}

body.d4-app .mode-card.selected .mode-selected-label {
  display: inline-flex;
}

body.d4-app .mode-footer {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 24px;
  margin-block-start: 22px;
}

body.d4-app #memorial-tone-note {
  flex: 1 1 560px;
  margin: 0;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--d4-warning) 34%, var(--d4-border));
  border-inline-start: 3px solid var(--d4-warning);
  border-radius: var(--d4-radius-control);
  background: color-mix(in srgb, var(--d4-warning) 7%, var(--d4-surface-raised));
  color: var(--d4-text-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

body.d4-app .mode-primary-action {
  flex: 0 0 min(100%, 260px);
  margin-inline-start: auto;
}

body.d4-app #confirm-mode-btn {
  width: 100%;
  margin: 0;
}

body.d4-app #broadcast-create-status {
  min-height: 20px;
  margin-block-start: 8px;
  color: var(--d4-text-muted);
  text-align: center;
}

body.d4-app #broadcast-create-status[data-state="error"] {
  color: var(--d4-error);
}

/* Broadcaster */

body.d4-app #broadcast-panel {
  padding-block: 16px 48px;
}

body.d4-app #broadcast-panel > .card {
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(330px, 4fr);
  grid-template-rows: auto auto minmax(0, 1fr);
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

body.d4-app #broadcast-panel .user-tag,
body.d4-app #broadcast-panel .rctag {
  display: flex;
  align-items: center;
  min-height: 64px;
  margin: 0;
  padding: 14px 24px;
  border: 0;
  border-block-end: 1px solid var(--d4-border);
  border-radius: 0;
  background: var(--d4-surface-raised);
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  font-size: 0.8rem;
  letter-spacing: 0;
}

body.d4-app #broadcast-panel .user-tag {
  grid-column: 1;
}

body.d4-app #broadcast-panel .user-tag strong {
  margin-inline-start: 6px;
  color: var(--d4-text);
  font-size: 1rem;
}

body.d4-app #broadcast-panel .rctag {
  grid-column: 2;
  justify-content: flex-end;
  border-inline-start: 1px solid var(--d4-border);
  color: var(--d4-signal);
  font-family: var(--om-font-mono);
  font-size: 0.9rem;
  font-weight: 720;
  letter-spacing: 0.12em;
}

body.d4-app #broadcast-status-bar {
  display: flex;
  grid-column: 1 / -1;
  min-height: 54px;
  margin: 0;
  padding: 12px 24px;
  border: 0;
  border-block-end: 1px solid var(--d4-border);
  border-radius: 0;
  background: var(--d4-surface);
}

body.d4-app .status-bar {
  border-color: var(--d4-border);
  background: var(--d4-surface);
}

body.d4-app .stxt {
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
}

body.d4-app .d4-broadcast-main {
  grid-column: 1;
  grid-row: 3;
  min-width: 0;
  padding: clamp(26px, 3vw, 44px);
}

body.d4-app .d4-broadcast-rail {
  display: flex;
  grid-column: 2;
  grid-row: 3;
  flex-direction: column;
  min-width: 0;
  border-inline-start: 1px solid var(--d4-border);
  background: var(--d4-surface);
}

body.d4-app .d4-broadcast-rail > * {
  margin: 0 !important;
  padding: 26px !important;
  border: 0 !important;
  border-block-end: 1px solid var(--d4-border) !important;
  border-radius: 0 !important;
  background: transparent !important;
}

body.d4-app .d4-broadcast-rail .qr-w {
  order: -1;
  text-align: start;
}

body.d4-app .d4-broadcast-rail .d4-rail-title {
  order: -2;
  padding-block-end: 0 !important;
  border-block-end: 0 !important;
  color: var(--d4-text);
  font-size: 1rem;
  font-weight: 740;
}

body.d4-app .d4-broadcast-rail .d4-rail-title + .qr-w {
  padding-block-start: 14px !important;
}

body.d4-app #qr-container {
  min-width: 164px;
  min-height: 164px;
  padding: 12px;
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-control);
  background: #ffffff;
}

body.d4-app #qr-container canvas,
body.d4-app #qr-container img {
  display: block;
  width: 140px !important;
  height: 140px !important;
}

body.d4-app #room-link {
  margin-block-start: 14px;
  color: var(--d4-text-muted);
  font-size: 0.78rem;
}

body.d4-app .d4-broadcast-rail .qr-w > div:last-child {
  justify-content: flex-start !important;
}

body.d4-app #share-btn,
body.d4-app .d4-broadcast-rail .qr-w button {
  min-height: 42px;
  margin: 0;
  border-radius: var(--d4-radius-round) !important;
  font-family: var(--om-font-sans) !important;
  font-size: 0.82rem !important;
  letter-spacing: 0 !important;
}

body.d4-app .d4-broadcast-rail .qr-w button > span:first-child {
  display: none;
}

body.d4-app .lpanel,
body.d4-app .mpanel,
body.d4-app .chat-wrap,
body.d4-app .guest-mic-panel {
  border-color: var(--d4-border);
  border-radius: var(--d4-radius-control);
  background: var(--d4-surface);
  color: var(--d4-text);
}

body.d4-app .lhdr {
  color: var(--d4-text);
  font-family: var(--om-font-sans);
  font-size: 1rem;
  letter-spacing: 0;
  text-transform: none;
}

body.d4-app .lbadge {
  border-radius: var(--d4-radius-round);
  background: var(--d4-canvas-muted);
  color: var(--d4-text);
}

body.d4-app .li {
  border-color: var(--d4-border);
  color: var(--d4-text);
}

body.d4-app #preview-wrap,
body.d4-app #listener-video-wrap {
  border-color: var(--d4-border);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface-strong);
}

body.d4-app #waveform-canvas {
  width: 100%;
  min-height: 164px;
  margin: 0;
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface);
}

body.d4-app .d4-waveform-stage {
  position: relative;
  margin-block: 8px;
}

body.d4-app .d4-waveform-empty {
  position: absolute;
  inset: 1px;
  display: grid;
  place-items: center;
  padding: 24px;
  border-radius: var(--d4-radius-surface);
  color: var(--d4-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
  text-align: center;
  pointer-events: none;
}

body.d4-app #broadcast-panel[data-broadcast-state="live"] .d4-waveform-empty,
body.d4-app #broadcast-panel[data-broadcast-state="starting"] .d4-waveform-empty,
body.d4-app #broadcast-panel[data-broadcast-state="reconnecting"] .d4-waveform-empty {
  display: none;
}

body.d4-app .cr {
  gap: 10px;
}

body.d4-app .sb {
  min-height: 48px;
  border: 1px solid var(--d4-border-strong);
  background: var(--d4-surface-raised);
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  font-size: 0.84rem;
  font-weight: 700;
}

body.d4-app .sb.off {
  border-color: var(--d4-border);
  background: var(--d4-surface);
  color: var(--d4-text-muted);
}

body.d4-app .sb.off:hover {
  border-color: var(--d4-border-strong);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
}

body.d4-app .sb.s-red {
  border-color: var(--d4-signal);
  background: var(--d4-signal-soft);
  color: var(--d4-signal-hover);
}

body.d4-app .sb.s-green,
body.d4-app .sb.s-blue,
body.d4-app .sb.s-amber,
body.d4-app .sb.s-purple {
  border-color: var(--d4-border-strong);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
}

body.d4-app #mic-btn:not(:disabled),
body.d4-app #mute-btn {
  min-height: 58px;
  font-size: 1rem;
}

body.d4-app .sl label,
body.d4-app .vu-l,
body.d4-app .param-name {
  color: var(--d4-text-muted);
  font-family: var(--om-font-sans);
  letter-spacing: 0;
  text-transform: none;
}

body.d4-app input[type="range"] {
  accent-color: var(--d4-signal);
}

body.d4-app #sound-settings-btn,
body.d4-app #btn-chat-toggle {
  min-height: 48px;
  border: 1px solid var(--d4-border) !important;
  background: var(--d4-surface) !important;
  color: var(--d4-text) !important;
  font-family: var(--om-font-sans) !important;
  font-size: 0.88rem !important;
  letter-spacing: 0 !important;
}

body.d4-app #custom-sound-panel {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  color: var(--d4-text);
}

body.d4-app .audio-signal-path {
  grid-column: 1 / -1;
  overflow: hidden;
  border: 1px solid var(--d4-border-strong);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface-strong);
  color: #ffffff;
}

body.d4-app .audio-signal-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-block-end: 1px solid rgb(255 255 255 / 0.14);
  font-size: 0.82rem;
  font-weight: 720;
}

body.d4-app .audio-signal-heading strong {
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 620;
}

body.d4-app .audio-signal-stages {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  counter-reset: audio-stage;
}

body.d4-app .audio-signal-stages span {
  position: relative;
  min-height: 64px;
  padding: 28px 12px 12px;
  border-inline-end: 1px solid rgb(255 255 255 / 0.12);
  color: rgb(255 255 255 / 0.76);
  font-size: 0.72rem;
  font-weight: 620;
  line-height: 1.3;
  counter-increment: audio-stage;
}

body.d4-app .audio-signal-stages span::before {
  content: "0" counter(audio-stage);
  position: absolute;
  inset-block-start: 10px;
  inset-inline-start: 12px;
  color: var(--d4-signal);
  font-family: var(--om-font-mono);
  font-size: 0.62rem;
  font-weight: 760;
}

body.d4-app .audio-signal-stages span:last-child {
  border-inline-end: 0;
}

body.d4-app #custom-sound-panel .custom-param {
  position: relative;
  min-width: 0;
  min-height: 128px;
  margin: 0;
  padding: 18px 16px 16px;
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface);
  color: var(--d4-text);
  box-shadow: none;
}

body.d4-app #custom-sound-panel .custom-param::before {
  content: attr(data-audio-stage);
  display: block;
  margin-block-end: 7px;
  color: var(--d4-signal);
  font-family: var(--om-font-mono);
  font-size: 0.62rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

body.d4-app #custom-sound-panel .param-header {
  align-items: flex-start;
  gap: 12px;
  margin-block-end: 14px;
}

body.d4-app #custom-sound-panel .param-name {
  color: var(--d4-text);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.35;
}

body.d4-app #custom-sound-panel .info-btn {
  width: 28px;
  height: 28px;
  border: 1px solid var(--d4-border-strong);
  background: transparent;
  color: var(--d4-text-muted);
}

body.d4-app #custom-sound-panel .info-btn:hover,
body.d4-app #custom-sound-panel .info-btn:focus-visible {
  border-color: var(--d4-text);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
}

body.d4-app #custom-sound-panel .param-tip {
  margin-block: 0 14px;
  padding: 10px 12px;
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-control);
  background: var(--d4-surface-raised);
  color: var(--d4-text-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

body.d4-app #custom-sound-panel .sl {
  display: grid;
  grid-template-columns: 42px minmax(80px, 1fr) 64px;
  gap: 10px;
  margin: 0;
}

body.d4-app #custom-sound-panel .sl label {
  min-width: 0;
  color: var(--d4-text-soft);
  font-size: 0.7rem;
  text-align: start;
}

body.d4-app #custom-sound-panel .sl > span {
  min-width: 0;
  color: var(--d4-text);
  font-family: var(--om-font-mono);
  font-size: 0.78rem;
  text-align: end;
}

body.d4-app #custom-sound-panel input[type="range"] {
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 0;
  background: linear-gradient(90deg, var(--d4-signal), var(--d4-border-strong));
}

body.d4-app #custom-sound-panel input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 4px solid var(--d4-surface);
  border-radius: 50%;
  background: var(--d4-signal);
  box-shadow: 0 0 0 1px var(--d4-signal);
}

body.d4-app #custom-sound-panel input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 3px solid var(--d4-surface);
  border-radius: 50%;
  background: var(--d4-signal);
  box-shadow: 0 0 0 1px var(--d4-signal);
}

body.d4-app #custom-sound-panel > div:last-child {
  grid-column: 1 / -1;
  margin-block-start: 2px !important;
}

body.d4-app #custom-sound-panel > div:last-child button {
  min-height: 42px;
  border-color: var(--d4-border-strong) !important;
  border-radius: var(--d4-radius-control) !important;
  color: var(--d4-text-muted) !important;
  font-family: var(--om-font-sans) !important;
}

body.d4-app .guest-mic-panel {
  color: var(--d4-text);
}

body.d4-app .guest-mic-panel button {
  min-height: 42px;
  font-family: var(--om-font-sans) !important;
}

/* Listener and recovery */

body.d4-app #listen-panel {
  width: min(100%, 920px);
  margin-inline: auto;
  padding-block: 40px 72px;
}

body.d4-app #listen-panel > .card {
  margin: 0;
  padding: clamp(28px, 5vw, 52px);
  box-shadow: var(--d4-shadow-raised);
}

body.d4-app #listen-panel .user-tag {
  color: var(--d4-text-muted);
  font-size: 0.85rem;
}

body.d4-app #listen-panel .user-tag strong,
body.d4-app .sl > span {
  color: var(--d4-text);
}

body.d4-app #listen-panel .status-bar {
  min-height: 48px;
  margin-block: 18px;
  padding: 10px 14px;
  border-radius: var(--d4-radius-round);
}

body.d4-app .cbanner,
body.d4-app .wbanner,
body.d4-app #listener-terminal-panel,
body.d4-app #gm-l-panel {
  border-radius: var(--d4-radius-control) !important;
  box-shadow: none;
}

body.d4-app .cbanner {
  border-color: color-mix(in srgb, var(--d4-success) 40%, transparent);
  background: color-mix(in srgb, var(--d4-success) 8%, transparent);
  color: var(--d4-success);
}

body.d4-app .guest-mic-approved .guest-mic-status,
body.d4-app .guest-mic-live .guest-mic-status {
  color: var(--d4-success) !important;
}

body.d4-app .guest-mic-pending .guest-mic-status,
body.d4-app .guest-mic-connecting .guest-mic-status {
  color: var(--d4-warning) !important;
}

body.d4-app .wbanner {
  border-color: color-mix(in srgb, var(--d4-warning) 40%, transparent);
  background: color-mix(in srgb, var(--d4-warning) 8%, transparent);
  color: var(--d4-warning);
}

body.d4-app #listener-terminal-panel {
  padding: 24px !important;
  border-color: color-mix(in srgb, var(--d4-error) 42%, transparent) !important;
  background: color-mix(in srgb, var(--d4-error) 7%, var(--d4-surface-raised)) !important;
  color: var(--d4-text);
}

body.d4-app #join-entry {
  display: grid;
  gap: 12px;
  margin-block-start: 22px;
}

body.d4-app #join-entry .btn {
  margin: 0 !important;
}

body.d4-app .reaction-bar {
  gap: 10px;
}

body.d4-app .r-btn {
  min-width: 48px;
  min-height: 48px;
  border: 1px solid var(--d4-border);
  border-radius: var(--d4-radius-round);
  background: var(--d4-surface);
}

body.d4-app .chat-wrap {
  overflow: hidden;
  border-color: var(--d4-border);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface-raised);
}

body.d4-app .chat-messages {
  min-height: 220px;
  height: auto;
  padding: 16px;
  gap: 10px;
  background: var(--d4-surface);
  color: var(--d4-text);
}

body.d4-app .chat-disabled {
  display: grid;
  min-height: 120px;
  place-items: center;
  color: var(--d4-text-muted);
  font-size: 0.88rem;
  text-align: center;
}

body.d4-app .chat-msg {
  width: fit-content;
  max-width: min(84%, 56ch);
  padding: 10px 12px;
  border: 1px solid var(--d4-border);
  border-radius: 12px 12px 12px 4px;
  background: var(--d4-surface-raised);
  color: var(--d4-text);
  font-family: var(--om-font-sans);
  font-size: 0.92rem;
  line-height: 1.5;
  box-shadow: none;
}

body.d4-app .chat-msg.mine {
  border-color: color-mix(in srgb, var(--d4-signal) 38%, var(--d4-border));
  border-radius: 12px 12px 4px 12px;
  background: var(--d4-signal-soft);
}

body.d4-app .chat-msg.broadcaster-msg {
  border-color: var(--d4-border-strong);
  border-inline-start: 3px solid var(--d4-signal);
  background: var(--d4-surface-raised);
}

body.d4-app .chat-msg .cm-who {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-block-end: 4px;
  color: var(--d4-text-muted);
  font-size: 0.75rem;
  font-weight: 650;
}

body.d4-app .chat-msg .cm-author {
  overflow: hidden;
  color: var(--d4-text);
  text-overflow: ellipsis;
  white-space: nowrap;
}

body.d4-app .chat-msg .cm-role {
  padding: 2px 6px;
  border: 1px solid color-mix(in srgb, var(--d4-signal) 34%, var(--d4-border));
  border-radius: 4px;
  color: var(--d4-signal-hover);
  font-size: 0.65rem;
  font-weight: 760;
}

body.d4-app .chat-msg .cm-time {
  margin-inline-start: auto;
  color: var(--d4-text-soft);
  font-family: var(--om-font-mono);
  font-size: 0.67rem;
  font-weight: 500;
}

body.d4-app .chat-msg .cm-text {
  color: var(--d4-text);
  font-size: 0.92rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

body.d4-app .chat-input-row {
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-color: var(--d4-border);
  background: var(--d4-surface-raised);
}

body.d4-app .chat-send-btn {
  display: grid;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--d4-cta);
  background: var(--d4-cta);
  color: #ffffff;
  font-size: 1.05rem;
}

body.d4-app #btn-chat-toggle #chat-toggle-label {
  min-width: 48px;
  border: 1px solid var(--d4-border);
  background: var(--d4-surface-raised) !important;
  color: var(--d4-text-muted);
  text-align: center;
}

body.d4-app #btn-chat-toggle.is-enabled {
  border-color: color-mix(in srgb, var(--d4-success) 45%, var(--d4-border)) !important;
}

body.d4-app #btn-chat-toggle.is-enabled #chat-toggle-label {
  border-color: color-mix(in srgb, var(--d4-success) 45%, var(--d4-border));
  color: var(--d4-success);
}

body.d4-app .err {
  color: var(--d4-error);
}

body.d4-app #network-status[data-kind="offline"] {
  border-color: color-mix(in srgb, var(--d4-warning) 42%, var(--d4-border));
  background: color-mix(in srgb, var(--d4-warning) 8%, var(--d4-surface-raised));
  color: var(--d4-warning);
}

body.d4-app #network-status[data-kind="restored"] {
  border-color: color-mix(in srgb, var(--d4-success) 42%, var(--d4-border));
  background: color-mix(in srgb, var(--d4-success) 8%, var(--d4-surface-raised));
  color: var(--d4-success);
}

body.d4-app .guest-mic-panel {
  border: 1px solid var(--d4-border) !important;
  background: var(--d4-surface) !important;
}

body.d4-app #toast-container .toast {
  padding: 13px 16px;
  border: 1px solid var(--d4-border-strong);
  border-inline-start-width: 4px;
  border-radius: var(--d4-radius-control);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
  font-size: 0.85rem;
  font-weight: 650;
  line-height: 1.45;
  box-shadow: var(--d4-shadow-raised);
}

body.d4-app #toast-container .toast.t-success {
  border-color: color-mix(in srgb, var(--d4-success) 46%, var(--d4-border));
  border-inline-start-color: var(--d4-success);
  background: color-mix(in srgb, var(--d4-success) 8%, var(--d4-surface-raised));
  color: var(--d4-success);
}

body.d4-app #toast-container .toast.t-info {
  border-color: color-mix(in srgb, var(--d4-info) 46%, var(--d4-border));
  border-inline-start-color: var(--d4-info);
  background: color-mix(in srgb, var(--d4-info) 8%, var(--d4-surface-raised));
  color: var(--d4-info);
}

body.d4-app #toast-container .toast.t-error {
  border-color: color-mix(in srgb, var(--d4-error) 46%, var(--d4-border));
  border-inline-start-color: var(--d4-error);
  background: color-mix(in srgb, var(--d4-error) 8%, var(--d4-surface-raised));
  color: var(--d4-error);
}

body.d4-app .om-confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgb(17 21 17 / 0.62);
}

body.d4-app .om-confirm-dialog {
  position: relative;
  width: min(100%, 430px);
  overflow: hidden;
  padding: 30px;
  border: 1px solid var(--d4-border-strong);
  border-radius: var(--d4-radius-surface);
  background: var(--d4-surface-raised);
  color: var(--d4-text);
  box-shadow: var(--d4-shadow-raised);
  cursor: default;
  pointer-events: all;
  animation: omConfirmIn 160ms cubic-bezier(0.16, 1, 0.3, 1);
}

body.d4-app .om-confirm-dialog::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 4px;
  background: var(--d4-signal);
}

body.d4-app .om-confirm-message {
  margin: 0 0 24px;
  color: var(--d4-text);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

body.d4-app .om-confirm-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

body.d4-app .om-confirm-button {
  min-height: 46px;
  padding: 10px 18px;
  border-radius: var(--d4-radius-control);
  font-family: var(--om-font-sans);
  font-size: 0.9rem;
  font-weight: 720;
  cursor: pointer;
}

body.d4-app .om-confirm-cancel {
  border: 1px solid var(--d4-border-strong);
  background: var(--d4-surface);
  color: var(--d4-text);
}

body.d4-app .om-confirm-cancel:hover {
  border-color: var(--d4-text-muted);
  background: var(--d4-canvas-muted);
}

body.d4-app .om-confirm-primary {
  border: 1px solid var(--red-cta);
  background: var(--red-cta);
  color: #ffffff;
}

body.d4-app .om-confirm-primary:hover {
  border-color: #a91111;
  background: #a91111;
}

@keyframes omConfirmIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.985);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

body.d4-app .om-shortcut-hint {
  inset-block-start: 84px;
  inset-block-end: auto;
  inset-inline-end: 24px;
  background: var(--d4-surface-strong);
  color: #ffffff;
}

html[dir="rtl"] body.d4-app #lang-select {
  padding: 0 14px 0 40px !important;
  background-position: left 14px center !important;
  text-align: right;
}

html[dir="rtl"] body.d4-app #broadcast-panel .rctag {
  border-inline-start: 1px solid var(--d4-border);
}

@media (max-width: 1100px) {
  body.d4-app .container {
    width: min(100% - 32px, 980px);
  }

  body.d4-app #broadcast-panel > .card {
    grid-template-columns: minmax(0, 1.65fr) minmax(300px, 1fr);
  }

}

@media (max-width: 820px) {
  body.d4-app {
    background-size: 72px 100%;
  }

  body.d4-app .container {
    width: min(100% - 24px, 720px);
    padding-block-start: 12px;
  }

  body.d4-app #home-panel {
    min-height: auto;
    padding-block: 32px 56px;
  }

  body.d4-app #home-panel .card {
    grid-template-columns: 1fr;
    padding: 32px;
  }

  body.d4-app #home-panel .card > div:nth-last-child(1) {
    grid-column: 1;
    grid-row: auto;
    margin-block-start: 18px !important;
    padding-block-start: 24px;
    padding-inline-start: 0;
    border-block-start: 1px solid var(--d4-border);
    border-inline-start: 0;
  }

  body.d4-app #broadcast-panel > .card {
    display: block;
  }

  body.d4-app #broadcast-panel .user-tag,
  body.d4-app #broadcast-panel .rctag {
    justify-content: flex-start;
    border-inline-start: 0;
  }

  body.d4-app .d4-broadcast-rail {
    border-block-start: 1px solid var(--d4-border);
    border-inline-start: 0;
  }

  body.d4-app .mode-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  body.d4-app .mode-group-special {
    grid-column: auto;
  }

  body.d4-app #custom-sound-panel {
    grid-template-columns: 1fr;
  }

  body.d4-app .audio-signal-path,
  body.d4-app #custom-sound-panel > div:last-child {
    grid-column: auto;
  }
}

@media (max-width: 520px) {
  body.d4-app .container {
    grid-template-columns: minmax(0, 1fr) auto;
    width: min(100% - 20px, 480px);
    padding-block-end: 28px;
  }

  body.d4-app .logo {
    min-height: 48px;
  }

  body.d4-app .logo h1 {
    font-size: 0.9rem;
  }

  body.d4-app #lang-toggle-bar {
    min-height: 48px;
  }

  body.d4-app #lang-select {
    min-width: 132px;
    max-width: 148px;
    min-height: 38px;
    font-size: 0.78rem !important;
  }

  body.d4-app #home-panel {
    padding-block: 22px 42px;
  }

  body.d4-app #home-panel .card,
  body.d4-app #broadcast-setup-panel .card,
  body.d4-app #listener-setup-panel .card,
  body.d4-app #mode-panel .card,
  body.d4-app #listen-panel > .card {
    padding: 22px;
    border-radius: 14px;
  }

  body.d4-app #home-panel .card > .sec {
    font-size: 2rem;
  }

  body.d4-app #broadcast-setup-panel,
  body.d4-app #listener-setup-panel,
  body.d4-app #mode-panel,
  body.d4-app #listen-panel {
    padding-block: 18px 42px;
  }

  body.d4-app .mode-grid {
    grid-template-columns: 1fr;
  }

  body.d4-app .mode-group-special .mode-group-list {
    grid-template-columns: 1fr;
  }

  body.d4-app .mode-card {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 12px;
    min-height: 86px;
    padding: 11px;
  }

  body.d4-app .mode-mark {
    width: 54px;
    height: 54px;
    border-radius: 10px;
  }

  body.d4-app .mode-mark-icon {
    width: 26px;
    height: 26px;
  }

  body.d4-app .mode-card.selected .mode-copy {
    padding-inline-end: 30px;
  }

  body.d4-app .mode-selected-label {
    position: absolute;
    inset-block-start: 10px;
    inset-inline-end: 10px;
    font-size: 0;
  }

  body.d4-app .mode-selected-label::before {
    width: 20px;
    height: 20px;
    font-size: 0.72rem;
  }

  body.d4-app .mode-footer {
    flex-direction: column;
  }

  body.d4-app .mode-primary-action {
    flex: 1 1 auto;
    width: 100%;
  }

  body.d4-app .om-confirm-dialog {
    padding: 26px 22px 22px;
  }

  body.d4-app .audio-signal-stages {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body.d4-app .audio-signal-stages span {
    border-block-end: 1px solid rgb(255 255 255 / 0.12);
  }

  body.d4-app .audio-signal-stages span:nth-child(even),
  body.d4-app .audio-signal-stages span:last-child {
    border-inline-end: 0;
  }

  body.d4-app .audio-signal-stages span:last-child {
    grid-column: 1 / -1;
    border-block-end: 0;
  }

  body.d4-app .d4-broadcast-main,
  body.d4-app .d4-broadcast-rail > * {
    padding: 20px !important;
  }

  body.d4-app .cr,
  body.d4-app .guest-mic-actions,
  body.d4-app #gm-l-approved > div:last-child {
    flex-direction: column;
  }

  body.d4-app .sb,
  body.d4-app .btn,
  body.d4-app .guest-mic-panel button {
    width: 100%;
  }

  body.d4-app #qr-container {
    min-width: 152px;
    min-height: 152px;
  }

  body.d4-app #qr-container canvas,
  body.d4-app #qr-container img {
    width: 128px !important;
    height: 128px !important;
  }

  body.d4-app .om-shortcut-hint {
    display: none;
  }
}

@media (prefers-color-scheme: dark) {
  body.d4-app {
    --d4-canvas: #101310;
    --d4-canvas-muted: #1a1e1a;
    --d4-surface: #181c18;
    --d4-surface-raised: #1d221d;
    --d4-surface-strong: #070907;
    --d4-text: #f1f4ef;
    --d4-text-muted: #f1f4ef;
    --d4-text-soft: #f1f4ef;
    --d4-border: #343b35;
    --d4-border-strong: #59635b;
    --d4-signal: #ff6758;
    --d4-signal-hover: #ff7b6c;
    --d4-signal-bright: #ff8b80;
    --d4-signal-soft: #3a211e;
    --d4-success: #72d7a9;
    --d4-warning: #f4c76a;
    --d4-info: #88b8b9;
    --d4-error: #ff6f86;
    --d4-focus: #ff6758;
    --d4-shadow: 0 18px 56px rgb(0 0 0 / 0.24);
    --d4-shadow-raised: 0 28px 88px rgb(0 0 0 / 0.34);
    color-scheme: dark;
  }

  body.d4-app #lang-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23abb4ac'/%3E%3C/svg%3E") !important;
  }

  body.d4-app .mode-card {
    --mode-active-accent: var(--mode-accent-dark);
  }
}

@media (prefers-reduced-motion: reduce) {
  body.d4-app *,
  body.d4-app *::before,
  body.d4-app *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (forced-colors: active) {
  body.d4-app .card,
  body.d4-app .field,
  body.d4-app .btn,
  body.d4-app .sb,
  body.d4-app .rt-btn,
  body.d4-app .av-btn,
  body.d4-app .mode-card,
  body.d4-app .status-bar,
  body.d4-app .d4-broadcast-rail {
    border: 1px solid CanvasText !important;
  }

  body.d4-app .btn-primary {
    background: Highlight !important;
    color: HighlightText !important;
  }
}