:root {
  color-scheme: light dark;
  --bg: #f4f7f8;
  --panel: #ffffff;
  --ink: #1e2528;
  --muted: #687276;
  --line: #d5dde1;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --warn: #b45309;
  --danger: #b91c1c;
  --ok: #15803d;
  --shadow: 0 18px 50px rgba(38, 44, 48, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(244, 247, 248, 0.96), rgba(238, 242, 244, 0.98)),
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 30rem);
}

button,
input,
select {
  font: inherit;
}

button {
  min-height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.55rem 0.8rem;
  color: var(--ink);
  background: var(--panel);
  cursor: pointer;
}

button.primary {
  border-color: var(--accent);
  color: #fff;
  background: var(--accent);
}

button.primary:hover {
  background: var(--accent-strong);
}

button.danger {
  border-color: rgba(185, 28, 28, 0.35);
  color: var(--danger);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

select:disabled {
  color: var(--muted);
  background: rgba(244, 247, 248, 0.72);
  cursor: not-allowed;
}

.viewer-shell {
  position: relative;
  display: grid;
  grid-template-rows: 1fr;
  height: 100vh;
  min-height: 100vh;
  padding: 0;
  overflow: hidden;
}

.topbar {
  position: absolute;
  right: clamp(0.85rem, 2.6vw, 1.6rem);
  bottom: clamp(0.85rem, 2.6vw, 1.6rem);
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;
}

.viewer-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.55rem;
}

.brand {
  display: flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0;
}

.mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 6px;
  color: #fff;
  background: var(--accent);
}

.caption-stage {
  display: grid;
  align-content: stretch;
  min-height: 0;
  overflow: hidden;
  padding: 0;
}

.admin-shell {
  display: grid;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  gap: 1rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.panel h2 {
  margin: 0 0 0.9rem;
  font-size: 1rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field.full {
  grid-column: 1 / -1;
}

label {
  color: var(--muted);
  font-size: 0.86rem;
}

input,
select {
  width: 100%;
  min-height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  color: var(--ink);
  background: var(--panel);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.actions.compact {
  margin-top: 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.75rem;
  background: rgba(244, 247, 248, 0.76);
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.metric strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.error {
  margin-top: 0.8rem;
  color: var(--danger);
  overflow-wrap: anywhere;
}

.admin-control-room {
  display: grid;
  grid-template:
    "status" auto
    "log" auto
    "monitor" minmax(0, 1fr)
    "controls" auto / minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
}

.status-mast {
  grid-area: status;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
}

.status-mast div {
  display: grid;
  gap: 0.25rem;
  border-right: 1px solid var(--line);
  padding: 1rem 1.05rem;
}

.status-mast div:last-child {
  border-right: 0;
}

.status-mast span {
  color: var(--muted);
  font-size: 0.82rem;
}

.status-mast strong {
  font-size: 1.15rem;
  overflow-wrap: anywhere;
}

.admin-log-strip {
  grid-area: log;
  display: grid;
  align-content: center;
  gap: 0.15rem;
  min-height: 2.8rem;
  max-height: 6rem;
  overflow-y: auto;
  padding: 0.5rem 1.05rem;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 247, 248, 0.86);
}

.admin-log-strip[hidden] {
  display: none;
}

.caption-monitor {
  grid-area: monitor;
  position: relative;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  padding: 0;
  min-height: 0;
  overflow: hidden;
}

.caption-monitor::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  z-index: 1;
  height: clamp(2.6rem, 7vh, 4.25rem);
  pointer-events: none;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(244, 247, 248, 0));
}

.bottom-controls {
  grid-area: controls;
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding: 1rem 1.05rem 1.25rem;
  background: rgba(244, 247, 248, 0.86);
}

.primary-controls {
  position: relative;
  display: grid;
  grid-template-columns: minmax(16rem, 1fr) auto minmax(12rem, 16rem) auto;
  align-items: end;
  gap: 0.8rem;
  min-width: 0;
}

.session-actions {
  display: flex;
  align-items: end;
  gap: 0.8rem;
  min-width: max-content;
}

.admin-actions {
  display: flex;
  align-items: end;
  gap: 0.8rem;
  align-self: start;
  padding-top: 1.42rem;
  padding-left: 1rem;
  border-left: 1px solid var(--line);
}

.control-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  place-content: center;
  gap: 0.25rem;
  padding: 1rem;
  text-align: center;
  color: var(--ink);
  background: rgba(244, 247, 248, 0.92);
  backdrop-filter: blur(4px);
}

.control-overlay[hidden] {
  display: none;
}

.control-overlay strong {
  font-size: 1rem;
}

.control-overlay span {
  color: var(--muted);
  font-size: 0.86rem;
}

.control-field {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
}

.control-field select {
  min-width: 0;
}

.device-picker {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.45rem;
  min-width: 0;
}

.device-picker select {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.device-permission {
  min-width: 5.8rem;
  padding-inline: 0.75rem;
  white-space: nowrap;
}

.device-permission[hidden] {
  display: none;
}

.audio-settings {
  position: static;
  align-self: end;
  min-width: 0;
}

.audio-settings summary {
  min-width: 7rem;
  min-height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.55rem 0.8rem;
  color: var(--ink);
  background: var(--panel);
  cursor: pointer;
  white-space: nowrap;
}

.audio-settings summary:hover {
  border-color: rgba(15, 118, 110, 0.34);
}

.audio-settings:not([open]) .audio-settings-panel {
  display: none;
}

.audio-settings-panel {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.75rem);
  left: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(10rem, 0.85fr) repeat(3, minmax(10rem, 1fr));
  gap: 0.65rem;
  align-items: end;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 14px 34px rgba(38, 44, 48, 0.14);
}

.audio-settings-panel > select {
  min-width: 0;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  min-height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  color: var(--ink);
  background: var(--panel);
}

.checkbox-field input {
  width: 1rem;
  min-height: auto;
  margin: 0;
  accent-color: var(--accent);
}

.checkbox-field span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.control-error {
  margin: 0;
  min-height: 1.12rem;
  color: var(--danger);
  font-size: 0.86rem;
  line-height: 1.3;
}

.broadcast-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: 7.4rem;
}

.clear-captions {
  min-width: 6.4rem;
  border-color: rgba(180, 83, 9, 0.42);
  color: var(--warn);
  white-space: nowrap;
}

.force-stop {
  min-width: 7rem;
  border-color: rgba(185, 28, 28, 0.34);
  color: var(--danger);
  white-space: nowrap;
}

.danger-fill {
  border-color: var(--danger);
  color: #fff;
  background: var(--danger);
}

.confirm-dialog {
  width: min(24rem, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  color: var(--ink);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.confirm-dialog::backdrop {
  background: rgba(30, 37, 40, 0.34);
}

.confirm-dialog-content {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}

.confirm-dialog-content strong {
  font-size: 1.05rem;
}

.confirm-dialog-content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.confirm-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.broadcast-toggle.danger {
  border-color: var(--danger);
  color: #fff;
  background: var(--danger);
}

.toggle-dot {
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  background: currentColor;
}

.broadcast-toggle.primary .toggle-dot,
.broadcast-toggle.danger .toggle-dot {
  background: #fff;
}

.caption-display {
  position: relative;
  display: grid;
  min-height: 0;
  height: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.9)),
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 2.65rem,
      rgba(213, 221, 225, 0.38) 2.65rem,
      rgba(213, 221, 225, 0.38) 2.7rem
    );
}

.caption-stage .caption-display {
  min-height: 0;
}

.viewer-shell .caption-display {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.caption-monitor .caption-display {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.caption-scroll {
  min-height: 0;
  overflow-y: auto;
  padding: clamp(0.85rem, 2vw, 1.2rem);
  scrollbar-color: rgba(104, 114, 118, 0.68) rgba(104, 114, 118, 0.12);
  scrollbar-width: auto;
}

.caption-scroll::-webkit-scrollbar {
  width: 0.8rem;
}

.caption-scroll::-webkit-scrollbar-track {
  background: rgba(104, 114, 118, 0.1);
}

.caption-scroll::-webkit-scrollbar-thumb {
  border: 0.18rem solid transparent;
  border-radius: 999px;
  background: rgba(104, 114, 118, 0.68);
  background-clip: content-box;
}

.viewer-shell .caption-scroll {
  padding: 0;
}

.caption-monitor .caption-scroll {
  padding: 0;
}

.viewer-shell .caption-lines,
.caption-monitor .caption-lines {
  padding-inline: clamp(1rem, 3vw, 1.6rem);
}

.caption-lines {
  display: grid;
  align-content: end;
  gap: 0.58rem;
  min-height: 100%;
}

.caption-center-spacer {
  height: 48%;
  min-height: 7rem;
}

.caption-line {
  padding: 0.05rem 0.15rem;
}

.viewer-shell .caption-line {
  padding-block: 0;
}

.caption-monitor .caption-line {
  padding-block: 0;
}

.caption-line.partial .caption-line-text::after {
  content: "";
  display: inline-block;
  width: 0.58ch;
  height: 1.05em;
  margin-left: 0.15ch;
  border-radius: 1px;
  vertical-align: -0.12em;
  background: currentColor;
  opacity: 0.38;
  animation: cursor-block-slow-breathe 2.4s ease-in-out infinite;
}

.caption-line-text {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: clamp(1.25rem, 2.45vw, 2.45rem);
  line-height: 1.52;
  font-weight: 400;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.viewer-shell .caption-line-text,
.caption-monitor .caption-line-text {
  color: #2d383c;
  font-size: clamp(1.38rem, 2.55vw, 2.6rem);
  line-height: 1.58;
  font-weight: 400;
}

.caption-source-text {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  overflow-wrap: anywhere;
}

.caption-empty {
  align-self: end;
  padding: 0.2rem 0.15rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
}

.jump-bottom {
  min-height: 2.25rem;
  opacity: 0;
  transform: translateY(0.4rem);
  pointer-events: none;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
  box-shadow: var(--shadow);
}

.caption-display > .jump-bottom {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
}

.viewer-jump-bottom {
  display: grid;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  min-height: 2.75rem;
  place-items: center;
  border-radius: 999px;
  padding: 0;
  color: var(--accent-strong);
  font-size: 1.45rem;
  line-height: 1;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 0.5rem 1.5rem rgba(38, 44, 48, 0.1);
}

.viewer-jump-bottom:disabled {
  display: none;
}

.admin-jump-bottom {
  position: absolute;
  right: clamp(0.85rem, 2.6vw, 1.6rem);
  bottom: clamp(0.85rem, 2.6vw, 1.6rem);
  z-index: 2;
}

.caption-display > .jump-bottom {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  min-height: 2.25rem;
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
}

.jump-bottom.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.jump-bottom:disabled {
  display: none;
}

@keyframes cursor-block-slow-breathe {
  0%,
  100% {
    opacity: 0.22;
  }

  50% {
    opacity: 0.48;
  }
}

.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 1rem;
}

.login-panel {
  width: min(24rem, 100%);
}

.login-panel h1 {
  margin: 1rem 0;
  font-size: 1.5rem;
}

.login-form {
  display: grid;
  gap: 0.9rem;
}

@media (max-width: 900px) {
  .bottom-controls {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .primary-controls {
    grid-template-columns: auto minmax(12rem, 1fr) auto;
  }

  .admin-actions {
    justify-content: flex-end;
    padding-top: 0.85rem;
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .device-field {
    grid-column: 1 / -1;
  }

  .language-pair-field {
    grid-column: auto;
  }

  .session-actions {
    justify-content: flex-end;
  }

  .audio-settings-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .broadcast-toggle,
  .clear-captions,
  .force-stop,
  #logout {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .grid,
  .form-grid,
  .status-mast,
  .bottom-controls,
  .primary-controls {
    grid-template-columns: 1fr;
  }

  .device-field,
  .language-pair-field,
  .session-actions,
  .force-stop,
  #logout {
    grid-column: auto;
  }

  .session-actions {
    display: grid;
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .audio-settings-panel {
    grid-template-columns: 1fr;
  }

  .admin-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .status-mast div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

}