:root {
  --bg: #0f1420;
  --panel: #171e2e;
  --panel2: #1f2940;
  --text: #e6ebf4;
  --muted: #8b96ab;
  --accent: #4f7cff;
  --accent-hover: #6b90ff;
  --danger: #e5484d;
  --ok: #46a758;
  --warn: #f5a524;
  --border: #2a3550;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.2em; }

/* Clean Enterprise Login View */
.login-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0f172a;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

.login-brand-header {
  margin-bottom: 2px;
}
.login-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #f8fafc;
  margin: 0;
}
.login-subtitle {
  font-size: 13px;
  color: #94a3b8;
  margin: 4px 0 0;
  line-height: 1.4;
}

.form-field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-field-group label {
  font-size: 13px;
  font-weight: 500;
  color: #cbd5e1;
}

.input-icon-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-wrap input {
  width: 100%;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 8px;
  color: #f8fafc;
  padding: 10px 38px 10px 12px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input-icon-wrap input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.pwd-toggle-btn {
  position: absolute;
  right: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14px;
  padding: 4px 6px;
  border-radius: 4px;
  opacity: 0.6;
  transition: opacity 0.15s;
}
.pwd-toggle-btn:hover {
  opacity: 1;
}

/* Enterprise Primary Login Button */
.login-btn-primary {
  width: 100%;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #2563eb;
  border: none;
  border-radius: 8px;
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.08s ease;
}
.login-btn-primary:hover {
  background: #1d4ed8;
}
.login-btn-primary:active {
  background: #1e40af;
  transform: scale(0.99);
}
.login-btn-primary:disabled {
  opacity: 0.75;
  cursor: not-allowed;
  transform: none;
}

/* Spinner */
.btn-spinner {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
  margin-right: 8px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Error Banner */
.error-banner {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 12.5px;
  color: #fca5a5;
  line-height: 1.4;
}

/* Global Base Controls */
input, button {
  font: inherit;
  border-radius: 8px;
}
input {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 12px;
}
input:focus { outline: 1px solid var(--accent); }

button {
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  padding: 8px 14px;
}
button:hover { background: #27334f; }
button.primary, #add-device-btn { 
  background: var(--accent); 
  border-color: var(--accent); 
  transition: all 0.2s ease;
}
button.primary:hover, #add-device-btn:hover { 
  background: var(--accent-hover); 
  box-shadow: 0 4px 12px rgba(79, 124, 255, 0.35);
}
button.ghost { background: transparent; }
button.danger { background: var(--danger); border-color: var(--danger); }
button.danger:hover { background: #ff5f63; }

/* ---------- topbar ---------- */
/* Topbars wrap at any width: the session header carries seven controls plus
   the device name, which does not fit on one line on smaller laptops. The
   workspace is height-agnostic now, so a second line is harmless. */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.topbar-right { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.download-agent-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(88, 166, 255, 0.1);
  color: #58a6ff;
  border: 1px solid rgba(88, 166, 255, 0.3);
  border-radius: 6px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: all .15s ease;
}
.download-agent-btn:hover {
  background: rgba(88, 166, 255, 0.2);
  border-color: #58a6ff;
  color: #fff;
}

/* ---------- devices table ---------- */
main { padding: 20px; }
#devices-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
#devices-table th, #devices-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
#devices-table th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
#devices-table tr:last-child td { border-bottom: none; }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.status-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; }
.status-online { background: rgba(70,167,88,0.15); color: var(--ok); }
.status-online::before { background: var(--ok); }
.status-online-no-access { background: rgba(245,165,36,0.15); color: var(--warn); }
.status-online-no-access::before { background: var(--warn); }
.status-offline { background: rgba(139,150,171,0.15); color: var(--muted); }
.status-offline::before { background: var(--muted); }
.status-expired { background: rgba(229,72,77,0.15); color: var(--danger); }
.status-expired::before { background: var(--danger); }

.actions-col { width: 55%; }
td.actions { display: flex; gap: 6px; flex-wrap: wrap; }
td.actions button { font-size: 12px; padding: 5px 10px; }

/* ---------- dialogs ---------- */
dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  min-width: 340px;
  max-width: calc(100vw - 24px);
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog h2 { margin-top: 0; font-size: 17px; }
dialog label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--muted); }
dialog input { width: 100%; }
/* Session length: a number plus its unit side by side. The unit dropdown is not
   a cosmetic toggle — app.js multiplies by 60 for hours before the value reaches
   the relay, which only ever speaks minutes. */
.duration-row { display: flex; gap: 8px; align-items: center; }
.duration-row input { flex: 1 1 auto; width: auto; }
.duration-row select { flex: 0 0 auto; height: 100%; }
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}
.pairing-code {
  font-family: Consolas, monospace;
  font-size: 32px;
  letter-spacing: 0.35em;
  text-align: center;
  background: var(--panel2);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 12px;
  margin: 16px 0;
  color: var(--accent-hover);
  user-select: all;
}

/* ---------- session view ---------- */
#session-view {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.session-topbar { position: relative; z-index: 5; }
.session-info { display: flex; align-items: center; gap: 16px; min-width: 0; }
#session-device-name { font-weight: 700; }
.timer {
  font-family: Consolas, monospace;
  font-size: 18px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 12px;
}
.timer.low { color: var(--danger); border-color: var(--danger); }

/* ---------- Session Workspace: Side-by-Side Layout ---------- */
/* The workspace simply takes the height that is left under the topbar. It used
   to be pinned to "100dvh - 54px", which broke on any screen where the topbar
   wraps onto a second line (small laptops, high DPI, narrow windows) and cut
   the bottom of the canvas/sidebar off. */
.session-workspace {
  flex: 1 1 auto;
  display: flex;
  flex-direction: row;
  min-height: 0;
  overflow: hidden;
  position: relative;
  background: #060911;
}

.canvas-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  min-height: 0;
  height: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #05070d;
  overflow: hidden;
}

/* Live WebRTC video: the picture is blitted into #screen-canvas every frame (so
   the cursor, scaling and input mapping stay identical), this element is only
   the decoder sink. Kept on-screen and full-size so Chromium never throttles
   decoding of an invisible video, hidden behind the opaque canvas. */
#rtc-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.002;
  pointer-events: none;
  z-index: 0;
}

#screen-canvas {
  position: relative;
  z-index: 1;
  background: #000;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.9);
  max-width: 100%;
  max-height: 100%;
  cursor: crosshair;
  object-fit: contain;
}

.session-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--muted);
  background: rgba(5, 7, 13, 0.85);
  z-index: 15;
}

/* Admin-side HUD preview: mirrors what the candidate sees. Its box is synced
   to the canvas' rendered rectangle from JS (left/top/width/height), so anchors
   and the 33% text column match the candidate's screen — never the letterbox.
   Inside it the same layers as agent/overlay.html are stacked in the same order:
   the text column (#hud-preview-column == #hud-container), the plate that hugs
   the text (#hud-preview-plate == #hud-editor), the text itself
   (#hud-preview-text == #hud-text-layer) and the continuation strip
   (#hud-preview-strip == #hud-overflow-note). Every size comes from
   hud-contract.js — the file the overlay itself reads — scaled to the canvas by
   JS, so there is no second set of numbers to drift. */
.hud-preview-overlay {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  overflow: hidden;
}
#hud-preview-column {
  position: absolute;
  /* width, like every other size here, is set from hud-contract.js (the same
     widthPct the overlay is sent) — never a second copy of the number. */
}
/* Font family, size, line height, radius, padding, background and the screen cap
   are painted from hud-contract.js (paintPlate / plateCapPx), so this rule holds
   only what the contract does not own: how the plate is laid out. */
#hud-preview-plate {
  position: relative;
  width: fit-content;
  max-width: 100%;
  white-space: normal;
  word-break: break-word;
  color: #ffffff;
  overflow: hidden;
  pointer-events: none;
  transition: background-color 0.12s linear;
}
#hud-preview-text {
  display: block;
  /* `pre-wrap` belongs to the ANSWER, not to the plate: the answer keeps its own
     newlines, while the markup's indentation between the plate's children
     collapses instead of becoming blank line boxes above and below the text. */
  white-space: pre-wrap;
  word-break: break-word;
  pointer-events: none;
}
/* Same honesty strip as the candidate's (#hud-overflow-note): shown only while
   the text is really clipped, legible whatever the plate's colour/alpha is. Its
   wording, colours, padding, type and radius are painted from hud-contract.js
   (paintStrip), which is what makes it the candidate's strip; only where it sits
   lives here. */
#hud-preview-strip {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}
#hud-preview-plate.overflowing #hud-preview-strip { display: block; }

.admin-locked-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(79, 124, 255, 0.92);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  z-index: 20;
  animation: pulse-blue 2s infinite;
}

@keyframes pulse-blue {
  0%, 100% { opacity: 0.95; }
  50% { opacity: 0.7; }
}

#lock-admin-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent-hover);
  font-weight: 700;
}

#lock-user-btn.locked {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
  font-weight: 700;
  animation: pulse-danger 2s infinite;
}

@keyframes pulse-danger {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* ---------- Persistent Control Sidebar ---------- */
/* Fluid width: the 390px fixed sidebar ate too much of a 1024-1280px laptop
   screen. It keeps a comfortable minimum, follows the viewport, and stacks
   under the canvas below 900px (see the media queries at the end). */
.admin-sidebar {
  width: clamp(320px, 32vw, 400px);
  min-width: 320px;
  flex: 0 0 clamp(320px, 32vw, 400px);
  min-height: 0;
  height: 100%;
  max-height: 100%;
  flex-shrink: 0;
  background: var(--panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto !important;
  overflow-x: hidden;
  padding: 12px;
  padding-bottom: 80px; /* Extra bottom breathing space so all cards scroll into view */
  gap: 12px;
  z-index: 10;
  scrollbar-width: thin;
  scrollbar-color: #4a5d87 rgba(0, 0, 0, 0.2);
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.admin-sidebar::-webkit-scrollbar {
  width: 8px;
}
.admin-sidebar::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
}
.admin-sidebar::-webkit-scrollbar-thumb {
  background: #4a5d87;
  border-radius: 4px;
}
.admin-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Accordions */
.sidebar-accordion {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  flex-shrink: 0; /* Never collapse when children expand */
  transition: border-color 0.2s ease;
}

.sidebar-accordion.open {
  border-color: rgba(79, 124, 255, 0.4);
}

/* AI Accordion Highlights */
#ai-accordion {
  border-color: rgba(79, 124, 255, 0.55);
  box-shadow: 0 0 16px rgba(79, 124, 255, 0.08);
}
#ai-accordion.open {
  border-color: #4f7cff;
}
#ai-accordion .accordion-header {
  background: linear-gradient(90deg, rgba(79, 124, 255, 0.15) 0%, rgba(16, 185, 129, 0.1) 100%);
}
#ai-accordion .accordion-header:hover {
  background: linear-gradient(90deg, rgba(79, 124, 255, 0.22) 0%, rgba(16, 185, 129, 0.16) 100%);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  gap: 8px;
  flex-shrink: 0;
}

.accordion-header:hover {
  background: rgba(255, 255, 255, 0.05);
}

.sidebar-accordion.open .accordion-header {
  border-bottom-color: var(--border);
}

.accordion-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.accordion-arrow {
  font-size: 10px;
  transition: transform 0.2s ease;
  color: var(--muted);
  display: inline-block;
}

.sidebar-accordion:not(.open) .accordion-arrow {
  transform: rotate(-90deg);
}

.sidebar-accordion:not(.open) .accordion-body {
  display: none;
}

.accordion-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  gap: 10px;
}

.sidebar-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}

.card-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
}

.card-btn-row {
  display: flex;
  gap: 8px;
}

.card-btn-row button {
  flex: 1;
  padding: 7px 10px;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.sidebar-hint {
  font-size: 11px;
  margin: 0;
  line-height: 1.4;
  color: var(--muted);
}

/* Voice: compact pinned bar (Meet-style). Pinned to the top of the sidebar so
   a mute is never more than one click away mid-session. Audio itself starts
   with the session; these are the two mutes plus the listening volume. */
.voice-bar {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.voice-bar-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.voice-bar-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
}

.voice-bar-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

/* The voice bar's own button class. Deliberately NOT `.voice-btn`, which the
   Voice Dictation card already uses: two different controls must not share one
   class, or a change to the call bar silently restyles dictation too. */
.voice-bar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.voice-bar-btn:hover {
  border-color: var(--accent);
}

.voice-bar-btn.muted {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(229, 72, 77, 0.16);
}

/* The browser never gave us a microphone: the call is up but the operator's
   voice is not going out, so the control says so instead of reading "On". */
.voice-bar-btn.unavailable {
  color: var(--danger);
  border-color: var(--danger);
  border-style: dashed;
  background: rgba(229, 72, 77, 0.10);
}

.voice-bar-vol {
  display: flex;
  align-items: center;
  gap: 8px;
}

.voice-vol-icon {
  font-size: 12px;
  line-height: 1;
}

.voice-vol-label {
  min-width: 34px;
  text-align: right;
  font-size: 11px;
  color: var(--muted);
}

.audio-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 700;
  text-transform: uppercase;
}

.audio-badge.off {
  background: rgba(139, 150, 171, 0.2);
  color: var(--muted);
}

.audio-badge.live {
  background: rgba(70, 167, 88, 0.25);
  color: var(--ok);
  animation: pulse-green 1.5s infinite;
}

/* Live call, but the admin's microphone is not transmitting (refused or
   stopped): green would be a lie here. */
.audio-badge.warn {
  background: rgba(229, 72, 77, 0.25);
  color: var(--danger);
}

/* The user device's own audio report: their microphone and the interviewer's
   system audio are two separate captures, so this line tracks the second one. */
.voice-src-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}

.src-badge {
  flex: 1 1 auto;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(139, 150, 171, 0.2);
  color: var(--muted);
}

.src-badge.live { background: rgba(70, 167, 88, 0.22); color: var(--ok); }
.src-badge.missing { background: rgba(229, 72, 77, 0.22); color: var(--danger); }
.src-badge.unknown { background: rgba(139, 150, 171, 0.2); color: var(--muted); }

/* A second, smaller shape of the call bar's own button — still `.voice-bar-btn`,
   never the dictation card's `.voice-btn`. */
.voice-bar-btn.compact {
  flex: 0 0 auto;
  padding: 4px 10px;
  font-size: 11px;
}

.status-indicator {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
}

.status-indicator.active {
  color: var(--ok);
  font-weight: 700;
}

.status-indicator.muted-tag {
  color: var(--danger);
  font-weight: 700;
}

.audio-meter-wrap {
  width: 100%;
  height: 8px;
  background: var(--panel2);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.audio-meter-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #46a758 60%, #f5a524 85%, #e5484d 100%);
  border-radius: 4px;
  transition: width 0.08s ease-out;
}

.vol-slider {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Ghost Prompter Controls in Sidebar */
.hud-toggle-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  background: var(--panel);
  padding: 3px 9px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.hud-toggle-label input:checked + .toggle-text {
  color: var(--ok);
}

.voice-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.voice-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 700;
  background: var(--panel2);
  border: 1px solid var(--border);
  cursor: pointer;
}

.voice-btn.recording {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.voice-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(139, 150, 171, 0.2);
  color: var(--muted);
}

.voice-badge.recording {
  background: rgba(229, 72, 77, 0.25);
  color: var(--danger);
  animation: pulse-danger 1.2s infinite;
}

.hud-select {
  font-size: 12px;
  padding: 6px 8px;
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
}

#hud-text-input {
  width: 100%;
  resize: vertical;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.5;
  padding: 8px 10px;
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
}

.hud-row {
  display: flex;
  gap: 6px;
  align-items: center;
}
.hud-row select {
  flex: 1;
}

/* Text / background colour controls */
.hud-color-input {
  width: 36px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  flex: 0 0 auto;
}
.hud-hex-label {
  font-size: 11px;
  color: var(--muted);
  min-width: 62px;
  font-variant-numeric: tabular-nums;
}
.hud-field-label {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}
.hud-value-label {
  font-size: 11px;
  color: var(--muted);
  min-width: 34px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.hud-slider-row {
  gap: 8px;
}
.hud-slider-row .vol-slider {
  flex: 1;
}

.auto-replace-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  cursor: pointer;
  color: var(--accent-hover);
  text-transform: none;
  letter-spacing: normal;
  font-weight: 500;
  user-select: none;
}
.auto-replace-label input {
  accent-color: var(--accent);
  cursor: pointer;
}

.hud-btn-row {
  display: flex;
  gap: 6px;
}
.hud-btn-row button {
  flex: 1;
  padding: 7px 6px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.hud-notice {
  font-size: 11px;
  background: rgba(245, 165, 36, 0.2);
  color: var(--warn);
  padding: 5px 8px;
  border-radius: 4px;
  display: block;
  font-weight: 600;
}

.image-upload-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.image-upload-row button {
  padding: 6px 12px;
  font-size: 12px;
}

.image-preview-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.image-preview-container img {
  max-width: 100%;
  max-height: 140px;
  object-fit: contain;
  border-radius: 6px;
  background: #000;
  border: 1px solid var(--border);
}

.image-preview-actions {
  display: flex;
  gap: 8px;
}
.image-preview-actions button {
  flex: 1;
  padding: 6px 10px;
  font-size: 12px;
}

/* Responsive side-by-side on smaller displays: the canvas keeps 45% of the
   space and the sidebar takes the rest with its own scroll, so nothing is
   pushed off-screen and no double scrollbar appears. */
@media (max-width: 900px) {
  .session-workspace {
    flex-direction: column;
  }
  .canvas-wrap {
    flex: 0 0 45%;
    height: auto;
    min-height: 180px;
  }
  .admin-sidebar {
    width: auto;
    min-width: 0;
    flex: 1 1 auto;
    height: auto;
    max-height: none;
    border-left: none;
    border-top: 1px solid var(--border);
    padding-bottom: 60px;
  }
}

/* Tablets / phones: the devices table gets its own horizontal scroll and the
   dialogs can never be wider than the screen. */
@media (max-width: 720px) {
  main {
    padding: 12px;
    overflow-x: auto;
  }
  #devices-table {
    min-width: 620px;
  }
  .actions-col {
    width: auto;
  }
  dialog {
    min-width: 0;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
    padding: 18px;
  }
  .pairing-code {
    font-size: clamp(20px, 7vw, 32px);
    letter-spacing: clamp(0.12em, 1.6vw, 0.35em);
  }
}

@media (max-width: 600px) {
  .topbar {
    padding: 8px 10px;
    gap: 8px;
  }
  .session-info {
    gap: 8px;
    font-size: 13px;
  }
  .timer {
    font-size: 13px;
    padding: 2px 6px;
  }
  .topbar-right {
    gap: 6px;
  }
  .topbar-right button {
    padding: 5px 9px;
    font-size: 11px;
  }
  .net-latency {
    font-size: 11px;
    padding: 3px 8px;
  }
}

/* ---------- AI Exam Pills & Module Tabs ---------- */
.ai-exam-pill {
  padding: 5px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.ai-exam-pill:hover {
  border-color: var(--accent);
  color: var(--text);
}
.ai-exam-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.ai-module-tab {
  padding: 7px 4px;
  border: none;
  background: var(--panel);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border-right: 1px solid var(--border);
}
.ai-module-tab:last-child { border-right: none; }
.ai-module-tab:hover {
  background: var(--panel2);
  color: var(--text);
}
.ai-module-tab.active {
  background: var(--accent);
  color: #fff;
}

/* ---- live latency readout (control-channel round trip) ---- */
.net-latency {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--muted, #9aa4b2);
  font-variant-numeric: tabular-nums;
}
.net-latency.lat-good { color: #3ddc84; border-color: rgba(61, 220, 132, 0.4); }
.net-latency.lat-ok   { color: #e2b53d; border-color: rgba(226, 181, 61, 0.4); }
.net-latency.lat-bad  { color: #e5484d; border-color: rgba(229, 72, 77, 0.45); }