:root {
  --bg-primary: #0a0f1d;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --border-color: rgba(75, 85, 99, 0.35);
  --border-glow: rgba(99, 102, 241, 0.4);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #a1a9b8;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
}

/* Header & Navigation */
header.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-badge {
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
  color: white;
  font-weight: 800;
  font-size: 1.1rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
}

.app-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.pulse-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--text-muted);
}

.pulse-dot.live {
  background-color: var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Layout Grid */
.dashboard-container {
  max-width: 1400px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

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

/* Card Styling */
.card {
  min-width: 0;
  max-width: 100%;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--border-glow);
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input[type="text"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="search"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  background: rgba(10, 15, 29, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-indigo);
  box-shadow: none;
  outline: 2px solid var(--accent-indigo);
  outline-offset: 1px;
}

/* Voice picker (listbox with keyboard preview) */
.voice-picker { position: relative; }
.voice-picker-btn {
  width: 100%; text-align: start; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  background: rgba(10, 15, 29, 0.7); border: 1px solid var(--border-color); border-radius: var(--radius-sm);
  color: var(--text-primary); padding: 0.65rem 2rem 0.65rem 0.85rem; font: inherit; font-size: 0.9rem;
}
.voice-picker-btn::after { content: "▾"; position: absolute; inset-inline-end: 0.8rem; color: var(--text-secondary); }
.voice-picker-btn:focus-visible, .voice-picker-list:focus-visible { outline: 2px solid var(--accent-indigo); outline-offset: 1px; }
.voice-picker-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.voice-picker-list {
  position: absolute; z-index: 30; inset-inline: 0; max-height: 18rem; overflow-y: auto; margin-top: 2px; list-style: none;
  background: var(--bg-secondary); border: 1px solid var(--border-glow); border-radius: var(--radius-sm); box-shadow: var(--shadow-card);
}
.voice-picker-list li { padding: 0.5rem 0.85rem; font-size: 0.88rem; cursor: pointer; }
.voice-picker-list li[aria-selected="true"] { color: var(--accent-emerald); }
.voice-picker-list li[aria-disabled="true"] { color: var(--text-muted); cursor: default; }
.voice-picker-list li.active { background: var(--accent-indigo); color: #fff; }
.voice-picker-status { min-height: 1.2em; margin-top: 0.25rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-primary {
  background: #4338ca;
  color: #ffffff;
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.btn-success {
  background: #047857;
  color: #ffffff;
}

.btn-danger {
  background: #be123c;
  color: #ffffff;
}

.btn-secondary {
  background: rgba(55, 65, 81, 0.6);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(75, 85, 99, 0.7);
}

.btn-sm {
  padding: 0.35rem 0.7rem;
  font-size: 0.75rem;
}

/* Telemetry Gauges */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.metric-box {
  background: rgba(10, 15, 29, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  text-align: center;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-indigo);
  margin-top: 0.2rem;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* Preset Cards */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.preset-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
}

.preset-card:hover {
  border-color: var(--accent-indigo);
  transform: translateY(-2px);
}

.preset-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.preset-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  background: rgba(99, 102, 241, 0.2);
  color: var(--accent-indigo);
  border: 1px solid rgba(99, 102, 241, 0.4);
}

.preset-stats {
  margin: 0.75rem 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  max-width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

th {
  background: rgba(31, 41, 55, 0.7);
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(75, 85, 99, 0.2);
}

tr:hover td {
  background: rgba(31, 41, 55, 0.4);
}

/* Sliders */
.slider-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

input[type="range"] {
  flex: 1;
  accent-color: var(--accent-indigo);
}

.slider-val {
  min-width: 50px;
  font-weight: 700;
  color: var(--accent-indigo);
  text-align: right;
  font-size: 0.85rem;
}

/* Toast */
#toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-indigo);
  color: white;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  font-size: 0.875rem;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

#toast.show {
  opacity: 1;
}

/* Floating Subtitle HUD for Viewer */
.subtitle-hud {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 15, 29, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(99, 102, 241, 0.5);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  max-width: min(800px, 92vw);
  min-width: min(400px, 90vw);
  text-align: center;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
  z-index: 999;
  cursor: move;
  transition: opacity 0.3s;
}

.hud-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  user-select: none;
}

.hud-source-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 0.4rem;
}

.hud-translated-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.4;
}

.hud-translated-text.arabic {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  direction: rtl;
  font-size: 1.5rem;
  color: #38bdf8;
}

/* Viewer Layout & Video Viewport */
.viewer-layout {
  max-width: 1300px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.video-viewport {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7);
  border: 1px solid var(--border-color);
}

.video-viewport iframe,
.video-viewport #ytplayer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
}

.control-item {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.ducking-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
  transition: all 0.2s ease;
}

.ducking-indicator.ducked {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  border-color: rgba(245, 158, 11, 0.4);
}

.app-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.control-label {
  margin-bottom: 0;
  font-size: 0.8rem;
  white-space: nowrap;
}

.select-lang {
  width: auto;
  padding: 0.4rem 0.8rem;
  font-weight: 600;
}

.status-text {
  font-weight: 600;
  font-size: 0.85rem;
}

.volume-slider {
  width: 100px;
  max-width: 100px;
  min-width: 60px;
  flex: 1;
}

.volume-val {
  font-size: 0.8rem;
  font-weight: 700;
  min-width: 35px;
}

.hud-close-btn {
  cursor: pointer;
  padding: 0 0.25rem;
  opacity: 0.75;
  transition: opacity 0.2s ease;
}

.hud-close-btn:hover {
  opacity: 1;
}

/* Domain Glossary Add Form */
#addTermForm,
.add-term-form {
  display: grid;
  grid-template-columns: 1fr 1fr 0.6fr 0.6fr 1fr 0.6fr 0.4fr auto;
  gap: 0.5rem;
  align-items: flex-end;
  margin-top: 1rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  min-width: 0;
  max-width: 100%;
}

.add-term-form > div,
#addTermForm > div {
  min-width: 0;
}

.add-term-form input,
.add-term-form select,
#addTermForm input,
#addTermForm select {
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
}

.add-term-form label,
#addTermForm label {
  font-size: 0.7rem;
}

.add-term-form .case-field,
#addTermForm .case-field {
  text-align: center;
}

.add-term-form .case-field input,
#addTermForm .case-field input {
  margin-top: 0.5rem;
  width: auto;
}

/* Responsive & Mobile Hygiene */
@media (max-width: 1024px) {
  #addTermForm,
  .add-term-form {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}

@media (max-width: 900px) {
  .dashboard-container {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }
}

@media (max-width: 768px) {
  body {
    background-attachment: scroll;
  }
  header.app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
  }
  .header-status {
    width: 100%;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
  }
  .viewer-layout {
    padding: 0 0.75rem;
  }
  .controls-bar {
    padding: 1rem;
    gap: 0.75rem;
  }
  .control-item {
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .control-item:first-child {
    justify-content: flex-start;
  }
}

.sched-form {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.5fr 1.5fr auto;
  gap: 0.5rem;
  align-items: flex-end;
  background: rgba(0, 0, 0, 0.25);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  min-width: 0;
  max-width: 100%;
}
.sched-form > div {
  min-width: 0;
}
.sched-form input {
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 600px) {
  #addTermForm,
  .add-term-form,
  .sched-form {
    grid-template-columns: 1fr !important;
  }
  .card div[style*="grid-template-columns"],
  .card form[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }
  input, select, textarea {
    max-width: 100% !important;
  }
  .table-wrapper {
    max-width: 100% !important;
    overflow-x: auto !important;
  }
  .card {
    padding: 1rem;
    max-width: 100% !important;
    overflow-x: hidden;
  }
  .dashboard-container {
    overflow-x: hidden;
    max-width: 100%;
  }
}

/* Light Theme Variables */
body.light-theme {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --border-color: rgba(203, 213, 225, 0.8);
  --border-glow: rgba(99, 102, 241, 0.3);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.05) 0px, transparent 50%);
}

body.light-theme header.app-header {
  background: rgba(255, 255, 255, 0.9);
}

body.light-theme .controls-bar {
  background: rgba(255, 255, 255, 0.9);
}

body.light-theme .subtitle-hud {
  background: rgba(255, 255, 255, 0.95);
  color: #0f172a;
  border-color: rgba(99, 102, 241, 0.5);
}

body.light-theme .hud-source-text {
  color: #64748b;
}

body.light-theme .hud-translated-text {
  color: #0f172a;
}

/* One-Click Language Switcher Pills */
.lang-pills {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  flex-wrap: wrap;
}

.lang-pill {
  padding: 0.3rem 0.65rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.lang-pill:hover {
  background: rgba(99, 102, 241, 0.25);
  border-color: var(--accent-indigo);
}

.lang-pill.active {
  background: var(--accent-indigo);
  color: white;
  border-color: var(--accent-indigo);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

/* Reconnection Alert Banner */
.reconnecting-banner {
  background: linear-gradient(90deg, #dc2626, #ea580c);
  color: white;
  text-align: center;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  border-bottom: 2px solid rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  animation: pulse-bg 2s infinite;
}

@keyframes pulse-bg {
  0% { opacity: 0.9; }
  50% { opacity: 1.0; }
  100% { opacity: 0.9; }
}

/* Speaker Diarization Badge */
.hud-speaker-badge {
  display: inline-block;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid var(--accent-indigo);
  color: var(--accent-indigo);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-right: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Bilingual Mode Display */
.bilingual-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
}

.bilingual-box {
  padding: 0.4rem;
}

.bilingual-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 0.2rem;
}

/* Searchable Transcript Drawer */
.transcript-drawer {
  position: fixed;
  bottom: 0;
  right: 0;
  width: 420px;
  max-width: 90vw;
  height: 520px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border-top-left-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.transcript-drawer-header {
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.transcript-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.transcript-item-card {
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.transcript-item-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Latency Status Badges */
.latency-badge {
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}
.latency-normal { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.latency-warning { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.latency-critical { background: rgba(244, 63, 94, 0.2); color: #f87171; }

/* VU Meter for Live Microphone */
.vu-meter-bar {
  height: 8px;
  border-radius: 4px;
  background: #1e293b;
  overflow: hidden;
  margin-top: 0.4rem;
}

.vu-meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #10b981, #f59e0b, #ef4444);
  transition: width 0.05s ease;
}

/* Accessibility & WCAG Standards */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent-indigo);
  color: #ffffff;
  padding: 0.6rem 1.2rem;
  z-index: 9999;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent-indigo);
  outline-offset: 2px;
}

/* Accessible Admin Tabs Navigation */
.admin-tabs-nav {
  max-width: 1400px;
  margin: 1rem auto 0 auto;
  padding: 0 2rem;
}

.admin-tablist {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-wrap: wrap;
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(8px);
  padding: 0.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active,
.tab-btn[aria-selected="true"] {
  background: var(--accent-indigo);
  color: #ffffff;
  border-color: var(--accent-indigo);
}

.tab-btn:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.tab-panel {
  display: block;
  grid-column: 1 / -1;
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

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

@media (max-width: 600px) {
  .tab-panel {
    max-width: 100% !important;
    overflow-x: hidden;
  }
}

/* Setting Explanations & Accessible Guidance */
.setting-help {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
  line-height: 1.45;
}

.mode-note {
  margin: 0 0 1rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid rgba(217, 119, 6, 0.45);
  border-radius: 6px;
  background: rgba(217, 119, 6, 0.1);
  font-size: 0.85rem;
  line-height: 1.45;
}

.check-sub {
  display: grid;
  gap: 0.35rem;
  margin: 0.25rem 0 0.75rem 1.6rem;
}

.setting-help.text-danger {
  color: #be123c;
  font-weight: 600;
}

.setting-help strong {
  color: var(--text-primary);
}

.session-timer-badge {
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid var(--accent-indigo);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  font-weight: 700;
  font-family: monospace;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.session-status-text {
  font-weight: 600;
  font-size: 0.9rem;
}


/* ---------- Admin shell: one task per screen ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link-2 { left: 14rem; }
header.app-header { padding: 0.6rem 1.25rem; }
.app-title { font-size: 1.05rem; }

.admin-shell {
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  gap: 1.25rem;
  max-width: 1200px;
  margin: 1rem auto;
  padding: 0 1.25rem;
  align-items: start;
}
.admin-nav { position: sticky; top: 4.5rem; }
.admin-tablist {
  display: flex; flex-direction: column; align-items: stretch; flex-wrap: nowrap; gap: 0.15rem;
}
.tab-btn { text-align: left; font-size: 0.9rem; border-radius: var(--radius-sm); }
.tab-btn[data-group] { margin-top: 1.6rem; position: relative; }
.tab-btn[data-group]:first-child { margin-top: 1.2rem; }
.tab-btn[data-group]::before {
  content: attr(data-group);
  position: absolute; top: -1.3rem; left: 0.2rem;
  font-size: 0.68rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-muted);
}

.admin-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  min-width: 0;
}
.admin-main:focus { outline: none; }
.tab-panel h2:focus { outline: 2px solid var(--accent-indigo); outline-offset: 4px; }
.section-title { font-size: 0.95rem; margin: 1.25rem 0 0.5rem; }

.field-box {
  border: 1px solid var(--border-color); border-radius: var(--radius-sm);
  padding: 0.75rem 1rem; margin: 0 0 1rem; background: rgba(0, 0, 0, 0.2); min-width: 0;
}
.field-box legend { font-weight: 700; font-size: 0.85rem; color: var(--text-secondary); padding: 0 0.4rem; }
label.check {
  display: flex; align-items: flex-start; gap: 0.5rem;
  text-transform: none; letter-spacing: 0; font-size: 0.9rem; color: var(--text-primary); cursor: pointer;
}
.choice-row { display: flex; gap: 0.5rem 1.5rem; flex-wrap: wrap; }
.inline-field { gap: 0.75rem; align-items: flex-end; flex-wrap: wrap; margin-bottom: 0.5rem; }
.inline-field .form-group { flex: 1; min-width: 14rem; margin-bottom: 0; }
.btn-row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin: 1rem 0; }
/* minmax(0, …): a long option (e.g. a missing-key note) must not widen its column past the panel */
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 0.9rem; }
.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 0.9rem; }
.toolbar { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: flex-end; margin-bottom: 0.5rem; }
.toolbar .form-group { flex: 1; min-width: 12rem; margin-bottom: 0; }
.narrow { max-width: 6rem; }
.unit { font-size: 0.75rem; }
.metric-small { font-size: 1.1rem; text-transform: uppercase; }
.alert-banner {
  padding: 0.5rem 1rem; border-radius: 4px; border: 1px solid #ef4444;
  background: rgba(239, 68, 68, 0.2); color: #fecaca; font-weight: 600;
}
.stream-info { display: flex; align-items: center; gap: 1rem; }
.stream-info img { width: 80px; height: 45px; object-fit: cover; border-radius: 4px; }
.stream-title { font-weight: 700; }
.badge-ok {
  font-size: 0.78rem; background: rgba(16, 185, 129, 0.2); color: #6ee7b7;
  padding: 0.25rem 0.5rem; border-radius: 4px; border: 1px solid rgba(16, 185, 129, 0.5); font-weight: 600;
}
.metric-box dt, .live-text dt, .metric-box dd, .live-text dd { margin: 0; }
.live-text { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 0.75rem; }
.live-text > div { background: rgba(0, 0, 0, 0.25); border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 0.5rem 0.75rem; }
.live-text dt { font-size: 0.75rem; font-weight: 700; color: var(--text-secondary); }
.chart-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 0.5rem; }
.chart-box { flex: 1; min-width: 14rem; border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 0.5rem 0.75rem; }
.chart-box canvas { width: 100%; height: 70px; }
pre { white-space: pre-wrap; font-size: 0.85rem; }

details.more { margin: 0.75rem 0; border: 1px solid var(--border-color); border-radius: var(--radius-sm); padding: 0.5rem 0.9rem; }
details.more > summary { cursor: pointer; font-weight: 600; padding: 0.25rem 0; }
details.more[open] > summary { margin-bottom: 0.5rem; }
.catalog-list { overflow-wrap: anywhere; max-height: 24rem; overflow-y: auto; padding-left: 1.2rem; }

.key-grid { display: grid; gap: 0.35rem; }
.key-row {
  display: grid; grid-template-columns: 11rem minmax(0, 1fr) auto; gap: 0.15rem 0.6rem; align-items: center;
  padding: 0.45rem 0; border-bottom: 1px solid var(--border-color);
}
.key-row label { margin: 0; text-transform: none; letter-spacing: 0; font-size: 0.9rem; color: var(--text-primary); }
.key-row .setting-help { grid-column: 2 / -1; margin: 0; }

/* Lists: <ul>/<ol> of items, each with its text and its own buttons */
.data-list { list-style: none; display: grid; gap: 0.5rem; margin: 0.5rem 0; }
.data-item {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 0.75rem; flex-wrap: wrap;
  background: rgba(0, 0, 0, 0.25); border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); padding: 0.6rem 0.9rem;
}
.item-main { flex: 1; min-width: 14rem; overflow-wrap: anywhere; }
.item-title { font-size: 0.95rem; }
.item-meta { font-size: 0.8rem; color: var(--text-secondary); }
.item-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; align-items: center; }
.list-count { font-size: 0.8rem; color: var(--text-secondary); margin: 0.25rem 0; }
.list-head { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.status-pill { font-size: 0.7rem; font-weight: 700; padding: 0.1rem 0.45rem; border-radius: 4px; background: rgba(255, 255, 255, 0.08); }
.status-active { color: #6ee7b7; } .status-probing { color: #fcd34d; }
.status-failed { color: #fda4af; } .status-completed { color: #93c5fd; }

/* Save bar shared by configuration screens */
.save-bar {
  position: sticky; bottom: 0; display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap;
  margin: 1.25rem -1.5rem -1.25rem; padding: 0.75rem 1.5rem;
  background: var(--bg-secondary); border-top: 1px solid var(--border-color);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

@media (max-width: 800px) {
  .admin-shell { grid-template-columns: minmax(0, 1fr); padding: 0 0.75rem; }
  .admin-nav { min-width: 0; }
  .admin-nav { position: static; }
  .admin-tablist { flex-direction: row; overflow-x: auto; padding-bottom: 0.5rem; }
  .tab-btn, .tab-btn[data-group], .tab-btn[data-group]:first-child { margin-top: 0; white-space: nowrap; }
  .tab-btn[data-group]::before { display: none; }
  .two-col, .three-col, .key-row { grid-template-columns: 1fr; }
  .key-row .setting-help { grid-column: 1; }
  .admin-main { padding: 1rem; }
  .save-bar { margin: 1rem -1rem -1rem; padding: 0.75rem 1rem; }
  .skip-link-2 { left: 1rem; }
}