/* ===== 全局变量与重置 ===== */
:root {
  --bg-base: #0b0f19;
  --bg-gradient: radial-gradient(circle at 20% 0%, #1a2030 0%, #0b0f19 60%);
  --accent: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-rgb: 34, 211, 238;
  --accent-contrast: #000000;
  --text: #f8fafc;
  --muted: #9ca3af;
  --danger: #f87171;
  --danger-hover: #ef4444;
  --danger-rgb: 248, 113, 113;
  --success: #4ade80;
  --success-rgb: 74, 222, 128;
  --warning: #fbbf24;
  --card-bg-rgb: 17, 24, 39;
  --card-border: rgba(34, 211, 238, 0.14);
  --surface-bg: #111827;
  --surface-bg-rgb: 17, 24, 39;
  --input-bg: #0b0f19;
  --input-border: rgba(255, 255, 255, 0.12);
  --btn-bg: rgba(255, 255, 255, 0.08);
  --btn-hover: rgba(255, 255, 255, 0.14);
  --btn-text: #f8fafc;
  --primary-btn-bg: linear-gradient(135deg, #22d3ee, #06b6d4);
  --primary-btn-hover: linear-gradient(135deg, #06b6d4, #22d3ee);
  --primary-btn-text: #000000;
  --danger-btn-bg: rgba(248, 113, 113, 0.15);
  --danger-btn-hover: rgba(248, 113, 113, 0.25);
  --danger-btn-text: #f87171;
  --glass-blur: 21px;
  --glass-opacity: 0.35;
  --bg-overlay-opacity: 0.35;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

.hidden,
[hidden] {
  display: none !important;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--bg-base);
  color: var(--text);
  line-height: 1.55;
}

#bg-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-color: var(--bg-base);
  background-image: var(--bg-gradient);
  background-size: cover;
  background-position: center;
  transition: background-image 0.4s ease;
}

#bg-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, var(--bg-overlay-opacity));
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

/* 外场页与 OBS 页需要纯黑底层，覆盖主题背景 */
.page-field #bg-layer,
.page-obs #bg-layer {
  background: #000;
  background-image: none;
}

.page-field #bg-overlay,
.page-obs #bg-overlay {
  opacity: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  margin: 0 0 0.6em 0;
}

code {
  background: rgba(var(--card-bg-rgb), 0.5);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: "SFMono-Regular", Consolas, monospace;
}

/* ===== 通用组件 ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: rgba(var(--card-bg-rgb), var(--glass-opacity));
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: var(--btn-bg);
  color: var(--btn-text);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  background: var(--btn-hover);
  border-color: rgba(var(--accent-rgb), 0.35);
}

.btn.primary {
  background: var(--primary-btn-bg);
  color: var(--primary-btn-text);
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.28);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(var(--accent-rgb), 0.4);
}

.btn.danger,
.btn.muted {
  background: var(--danger-btn-bg);
  color: var(--danger-btn-text);
  border-color: rgba(var(--danger-rgb), 0.35);
}

.btn.danger:hover,
.btn.muted:hover {
  background: var(--danger-btn-hover);
}

.btn.small {
  padding: 5px 10px;
  font-size: 12px;
}

.btn.big {
  padding: 14px 10px;
  font-size: 15px;
  flex: 1;
  min-width: 0;
}

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

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--text);
  background: rgba(var(--card-bg-rgb), 0.3);
  border-color: transparent;
}

.form-row {
  margin-bottom: 14px;
}

.form-row label {
  display: block;
  font-size: 14px;
  color: var(--muted);
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.checkbox-row label,
.checkbox-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  cursor: pointer;
}

.checkbox-row input,
.checkbox-inline input {
  width: auto;
  margin: 0;
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 30px 0;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  margin-top: -8px;
  margin-bottom: 12px;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.link-row input {
  flex: 1 1 220px;
  min-width: 0;
  padding: 8px 10px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 12px;
}

/* ===== 演练列表页 ===== */
.page-drills h1 {
  font-size: 26px;
}

.page-drills .subtitle {
  color: var(--muted);
  margin-bottom: 20px;
}

.page-drills table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-drills th,
.page-drills td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--card-border);
}

.page-drills th {
  color: var(--muted);
  font-weight: 600;
}

.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.inline-form input {
  flex: 1;
  min-width: 160px;
  padding: 10px 12px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
}

/* ===== 导播台 ===== */
.page-director {
  padding-bottom: 40px;
}

.director-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 20px;
  padding: 16px 20px;
  background: rgba(var(--card-bg-rgb), var(--glass-opacity));
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-left,
.header-right {
  min-width: 0;
}

.header-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.room-info {
  overflow-wrap: anywhere;
}

.director-header h1 {
  font-size: 20px;
  margin-bottom: 4px;
}

.room-info {
  font-size: 13px;
  color: var(--muted);
}

.program-output-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.program-output-buttons .btn {
  min-width: 112px;
  white-space: nowrap;
}

.program-output-status {
  margin: 0 0 10px;
}

.safety-settings {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.safety-settings summary {
  width: max-content;
  cursor: pointer;
}

.safety-settings-body {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
}

.safety-image-preview {
  width: 240px;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #000;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
}

.safety-settings-controls {
  flex: 1;
  min-width: 240px;
}

.safety-settings-controls input[type="file"] {
  max-width: 100%;
  margin-bottom: 10px;
  color: var(--text);
}

.safety-settings-controls .hint {
  margin: 8px 0 0;
}

@media (max-width: 640px) {
  .safety-settings-body { align-items: flex-start; flex-direction: column; }
  .safety-image-preview { width: min(100%, 320px); }
}

.director-feed .feed-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 340px);
  align-items: start;
  gap: 20px;
  max-width: 1180px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .director-feed .feed-grid {
    grid-template-columns: 1fr;
  }
}

.feed-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feed-preview {
  position: relative;
  background: #000;
  border-radius: var(--radius-lg);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  width: 100%;
  max-width: 800px;
  max-height: 450px;
  margin: 0 auto;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
}

.feed-preview.portrait {
  aspect-ratio: 9 / 16;
  max-width: 320px;
  max-height: 568px;
}

.feed-preview video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
  display: block;
}

@media (max-width: 900px) {
  .feed-preview {
    max-height: 50vh;
  }
  .feed-preview.portrait {
    max-height: 50vh;
  }
}

.feed-status-pill {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-size: 12px;
  z-index: 3;
}

.feed-status-pill .status-dot {
  width: 8px;
  height: 8px;
  background: var(--muted);
}

.feed-status-pill.preview .status-dot {
  background: var(--warning);
}

.feed-status-pill.monitor .status-dot {
  background: var(--success);
}

.feed-status-pill.live .status-dot {
  background: var(--danger);
  animation: pulse-dot 1.2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.feed-status {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

.vu-meter-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}

.vu-meter {
  flex: 1;
  height: 10px;
  background: rgba(var(--card-bg-rgb), 0.5);
  border-radius: 5px;
  overflow: hidden;
}

.vu-meter > div {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--success) 0%, var(--warning) 70%, var(--danger) 100%);
  transition: width 0.05s linear;
}

.program-control .audio-bus {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--card-border);
}

.audio-bus h3 {
  margin-bottom: 8px;
  font-size: 15px;
}

.audio-bus .link-row {
  max-width: 900px;
  margin-bottom: 0;
}

.monitor-wall h2 {
  margin-bottom: 16px;
}

.subject-group {
  margin-bottom: 24px;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: rgba(var(--card-bg-rgb), var(--glass-opacity));
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
}

.subject-group.active-subject {
  border-color: rgba(var(--danger-rgb), 0.6);
  box-shadow: 0 0 0 2px rgba(var(--danger-rgb), 0.25), var(--shadow);
}

.subject-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px 16px;
  margin-bottom: 14px;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: rgba(var(--card-bg-rgb), 0.4);
  border: 1px solid var(--card-border);
}

.subject-header h3 {
  margin: 0;
  font-size: 16px;
}

.subject-heading-actions,
.subject-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  min-width: 0;
}

.subject-heading-actions h3 {
  overflow-wrap: anywhere;
}

.camera-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr));
  gap: 16px;
}

@media (max-width: 480px) {
  .camera-grid {
    grid-template-columns: 1fr;
  }
}

.camera-card {
  background: rgba(var(--card-bg-rgb), calc(var(--glass-opacity) + 0.06));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.camera-card.is-pgm {
  border-color: rgba(var(--danger-rgb), 0.9);
  box-shadow: 0 0 0 3px rgba(var(--danger-rgb), 0.38);
}

.camera-card.is-standby {
  border-color: rgba(var(--success-rgb), 0.9);
  box-shadow: 0 0 0 3px rgba(var(--success-rgb), 0.3);
}

.camera-card.is-grid-audio {
  border-color: rgba(var(--accent-rgb), 0.9);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.28);
}

.program-tally-badge {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.is-pgm .program-tally-badge { color: var(--danger); }
.is-standby .program-tally-badge { color: var(--success); }
.subject-default-status { color: var(--muted); font-size: 12px; }
.cam-video-wrap { cursor: default; }
.camera-card.is-standby .cam-video-wrap { cursor: pointer; }

.cam-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 6px 10px;
  padding: 12px 14px;
  background: rgba(var(--card-bg-rgb), 0.35);
  border-bottom: 1px solid var(--card-border);
}

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

.cam-name {
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cam-operator {
  color: var(--muted);
  font-size: 12px;
  font-weight: normal;
  white-space: nowrap;
}

.cam-status {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.cam-connection-label {
  color: var(--muted);
  font-size: 11px;
  font-weight: normal;
}

.rtc-diagnostics {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 12px;
}

.rtc-diagnostics summary {
  cursor: pointer;
}

.rtc-diagnostics .btn {
  margin: 10px 0 6px;
}

.rtc-diagnostics pre {
  max-height: 240px;
  overflow: auto;
  padding: 10px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 11px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  user-select: text;
}

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

.status-dot.online {
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

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

.signal-bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.signal-bars span {
  width: 3px;
  background: var(--muted);
  border-radius: 1px;
}

.signal-bars span:nth-child(1) { height: 4px; }
.signal-bars span:nth-child(2) { height: 7px; }
.signal-bars span:nth-child(3) { height: 11px; }

.signal-bars.good span { background: var(--success); }
.signal-bars.medium span { background: var(--warning); }
.signal-bars.poor span { background: var(--danger); }

.cam-video-wrap {
  position: relative;
  background: #000;
  aspect-ratio: 16 / 9;
}

.cam-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #000;
}

.cam-audio {
  display: none;
}

.cam-vu {
  padding: 6px 12px;
}

.cam-vu .vu-meter {
  height: 6px;
}

.cam-telemetry {
  display: grid;
  gap: 5px;
  padding: 9px 12px 11px;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1, "ss01" 1;
  line-height: 1.5;
}

.cam-telemetry-summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 10px;
  margin-bottom: 2px;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
}

.telemetry-primary {
  padding: 6px 8px;
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(var(--accent-rgb), 0.055);
  color: var(--text);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.cam-source-metrics.telemetry-primary {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.cam-telemetry-secondary {
  display: grid;
  gap: 3px;
  margin-top: 3px;
  padding-top: 6px;
  border-top: 1px solid var(--card-border);
}

.cam-preview-assessment.quality-good { color: var(--success); }
.cam-preview-assessment.quality-degraded { color: var(--warning); }
.cam-preview-assessment.quality-stalled { color: var(--danger); }

.cam-toolbar {
  display: grid;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--card-border);
}

.cam-primary-actions,
.cam-secondary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cam-secondary-actions {
  padding-top: 8px;
  border-top: 1px dashed var(--card-border);
}

.cam-toolbar .btn.small {
  padding: 5px 10px;
  font-size: 12px;
}

@media (max-width: 640px) {
  .director-container { padding: 12px; }
  .page-director .card { padding: 14px; }
  .director-header { padding: 12px; }
  .header-right { justify-content: flex-start; }
  .program-output-buttons .btn { flex: 1 1 220px; }
  .subject-group { padding: 10px; }
  .subject-header { padding: 10px; }
  .subject-heading-actions,
  .subject-actions { width: 100%; }
  .link-row select { max-width: 100%; min-width: 0; }
}

.cam-links {
  padding: 10px 14px;
  border-top: 1px solid var(--card-border);
}

.cam-links.collapsed {
  display: none;
}

.link-block {
  display: flex;
  gap: 12px;
}

.qr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.qr-label {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  white-space: nowrap;
}

.link-block .qr {
  width: 90px;
  height: 90px;
  flex-shrink: 0;
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.link-block .qr svg {
  width: 100%;
  height: 100%;
}

.link-block .qr svg path {
  fill: #000;
}

.link-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ===== 外场手机页 ===== */
.page-field {
  background: #000;
  overflow: hidden;
}

.field-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
}

.field-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  background: var(--surface-bg);
  color: var(--text);
  font-size: 12px;
  flex-shrink: 0;
  gap: 8px;
}

.field-banner .banner-left,
.field-banner .banner-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.field-banner .banner-center {
  text-align: center;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.field-banner.active-subject,
.field-banner.standby {
  padding-top: 12px;
  padding-bottom: 12px;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

.field-banner.active-subject {
  background: var(--danger);
  animation: pulse-red 1.5s infinite;
}

.field-banner.standby {
  background: #15803d;
}

.field-banner .pub-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
  font-size: 11px;
  color: var(--success);
}

@keyframes pulse-red {
  0%, 100% { background: var(--danger); }
  50% { background: var(--danger-hover); }
}

.feed-panel {
  position: relative;
  flex: 1 1 0;
  min-height: 0;
  background: #000;
  overflow: hidden;
}

.feed-panel video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #000;
}

.local-panel video {
  object-fit: contain;
  width: 100%;
  height: 100%;
}

.local-panel {
  position: relative;
  flex: 1 1 0;
  width: 100%;
  min-height: 0;
  margin: 0 auto;
  overflow: hidden;
}

.section-label {
  position: absolute;
  top: 8px;
  left: 10px;
  z-index: 2;
  font-size: 12px;
  color: var(--text);
  background: rgba(var(--card-bg-rgb), 0.55);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.section-label .label-muted {
  color: var(--muted);
  margin-left: 4px;
  font-size: 11px;
}

.unmute-director {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 14px 22px;
  font-size: 15px;
  white-space: nowrap;
}

.unmute-director.hidden {
  display: none;
}

.director-muted-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  text-align: center;
}

.director-muted-badge.hidden {
  display: none;
}

.field-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface-bg);
  color: var(--text);
  border: 1px solid var(--card-border);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 200;
  pointer-events: none;
}

.field-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.field-device-bar {
  display: flex;
  gap: 10px;
  padding: 8px 10px;
  background: var(--surface-bg);
  border-top: 1px solid var(--card-border);
  flex-shrink: 0;
}

.field-device-bar label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--muted);
}

.field-device-bar select {
  width: 100%;
  padding: 8px 10px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 13px;
}

.device-hint {
  margin: 0;
  padding: 5px 10px;
  background: var(--surface-bg);
  color: var(--muted);
  font-size: 11px;
  text-align: center;
  border-top: 1px solid var(--card-border);
  flex-shrink: 0;
}

.field-vu-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  background: var(--surface-bg);
  color: var(--muted);
  font-size: 11px;
  flex-shrink: 0;
}

.field-vu-row span {
  flex-shrink: 0;
}

.field-vu-meter {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.field-vu-meter > div {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--success), var(--warning), var(--danger));
  transition: width 0.08s linear;
}

.field-diagnostics {
  flex-shrink: 0;
  max-height: 38vh;
  margin: 0;
  padding: 6px 10px;
  overflow: auto;
  background: var(--surface-bg);
  border-top: 1px solid var(--card-border);
}

.field-diagnostics summary {
  padding: 3px 0;
  user-select: none;
}

.field-log {
  position: static;
  max-height: 160px;
  overflow: auto;
  background: rgba(0, 0, 0, 0.78);
  color: #22d3ee;
  font-size: 11px;
  line-height: 1.45;
  padding: 8px 10px;
  border-radius: var(--radius);
  pointer-events: auto;
  user-select: text;
}

.field-log:empty {
  display: none;
}

.field-controls {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
  padding: 6px;
  padding-bottom: calc(6px + env(safe-area-inset-bottom));
  background: var(--surface-bg);
  flex-shrink: 0;
}

.field-controls .btn {
  min-height: 54px;
  padding: 2px;
  font-size: 10px;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  white-space: nowrap;
  overflow: hidden;
}

.field-controls .btn .icon {
  font-size: 20px;
  line-height: 1;
}

.field-controls .btn .label {
  font-size: 10px;
}

.video-muted-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  text-align: center;
}

.video-muted-badge.hidden {
  display: none;
}

.return-audio-container {
  display: none;
}

.return-surface {
  display: grid;
  width: 100%;
  height: 100%;
  gap: 2px;
  background: #000;
}

.return-surface.layout-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(42vw, 320px), 1fr));
}

.return-surface.layout-single,
.return-surface.layout-director {
  grid-template-columns: 1fr;
}

.return-slot {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #000;
}

.return-slot-label {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 3px 6px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 11px;
  pointer-events: none;
}

.return-status {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--muted);
  text-align: center;
  pointer-events: none;
}

.return-status.hidden {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--surface-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  width: 90%;
  max-width: 360px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.modal-actions .btn {
  flex: 1;
}

/* ===== 视觉设置面板 ===== */
.panel-backdrop {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.panel-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.theme-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 340px;
  max-width: 90vw;
  height: 100vh;
  background: rgba(var(--card-bg-rgb), calc(var(--glass-opacity) + 0.06));
  backdrop-filter: blur(calc(var(--glass-blur) + 4px));
  -webkit-backdrop-filter: blur(calc(var(--glass-blur) + 4px));
  border-left: 1px solid var(--card-border);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.35);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.25s ease, visibility 0.25s ease;
}

.theme-panel.open {
  transform: translateX(0);
  visibility: visible;
}

.theme-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--card-border);
}

.theme-panel-header h3 {
  margin: 0;
  font-size: 16px;
}

.theme-panel-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.theme-section {
  margin-bottom: 20px;
}

.theme-section h4 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.theme-section select {
  width: 100%;
  padding: 10px 12px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
}

.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 12px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: rgba(var(--card-bg-rgb), 0.3);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-btn:hover {
  background: rgba(var(--accent-rgb), 0.1);
  border-color: rgba(var(--accent-rgb), 0.35);
}

.preset-btn.active {
  outline: 2px solid var(--accent);
  background: rgba(var(--accent-rgb), 0.15);
}

.preset-name {
  font-weight: 600;
  font-size: 13px;
}

.preset-desc {
  font-size: 11px;
  color: var(--muted);
}

.range-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 4px;
}

.file-input {
  width: 100%;
  padding: 8px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 13px;
}

.form-hint {
  color: var(--muted);
  font-size: 12px;
  margin: 6px 0 0;
}

.wallpaper-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.wallpaper-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  background-color: var(--bg-base);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.wallpaper-delete {
  position: absolute;
  top: 4px;
  right: 4px;
  z-index: 1;
  width: 24px;
  height: 24px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-size: 18px;
  line-height: 20px;
  cursor: pointer;
}

.wallpaper-delete:hover,
.wallpaper-delete:focus-visible {
  background: var(--danger);
  color: #fff;
}

.wallpaper-thumb.active {
  border-color: var(--accent);
}

.wallpaper-thumb.clear {
  display: grid;
  place-items: center;
  color: var(--muted);
  border: 1px dashed var(--card-border);
  font-size: 12px;
}

input[type="range"] {
  width: 100%;
  margin-top: 6px;
}

/* ===== OBS 页 ===== */
.page-obs {
  margin: 0;
  padding: 0;
}