.countdown-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
}
.countdown-overlay.hidden {
  display: none;
}
#countdownNumber {
  font-size: 5rem;
  color: #fff;
  font-weight: bold;
  text-shadow: 0 2px 16px #000, 0 0 8px #2563eb;
}
.recording-dot {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 18px;
  height: 18px;
  background: #dc2626;
  border-radius: 50%;
  box-shadow: 0 0 8px 2px #dc2626cc;
  border: 2px solid #fff;
  z-index: 10;
  display: none;
}
.recording-dot.active {
  display: block;
  animation: recordingDotPulse 1s infinite alternate;
}
@keyframes recordingDotPulse {
  0% { opacity: 1; }
  100% { opacity: 0.3; }
}
.pulsate-glow {
  animation: pulsateGlowBlue 1.8s ease-in-out infinite;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35);
}

@keyframes pulsateGlowBlue {
  0% {
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.28);
  }
  50% {
    box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.75);
  }
  100% {
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.28);
  }
}
:root {
  color-scheme: light;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --space-2: 6px;
  --space-3: 10px;
  --space-4: 12px;
  --space-5: 16px;
  --space-6: 20px;
  --space-7: 24px;
  --space-8: 30px;
  --interview-gap: var(--space-4);
  --interview-reserve-height: 320px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: #f5f7fb;
  color: #1f2937;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-5);
}

body.admin-login-page {
  align-items: center;
}

body.admin-login-page .app {
  width: min(900px, calc(100vw - (var(--space-5) * 2)));
}

.app {
  width: min(
    1200px,
    calc(100vw - (var(--space-5) * 2)),
    calc((100dvh - (var(--space-5) * 2) - var(--interview-reserve-height)) * (16 / 9))
  );
  background: #ffffff;
  border-radius: 16px;
  padding: var(--space-7);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

h1 {
  margin: 0;
  font-size: 1.8rem;
}

h2 {
  margin: 0 0 0.75rem 0;
  font-size: 1.1rem;
}

.subtitle {
  margin-top: var(--space-3);
  color: #4b5563;
}

#interviewContent > h1 {
  margin-bottom: var(--space-4);
}

#interviewContent > .subtitle {
  margin-top: 0;
  margin-bottom: var(--space-4);
}

.interview-top-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(440px, 56%);
  gap: var(--interview-gap);
  align-items: start;
}

.interview-header-block > h1 {
  margin-bottom: var(--space-4);
}

.interview-header-block > .subtitle {
  margin-top: 0;
  margin-bottom: 0;
}

.device-panel-top {
  margin-top: 0;
  padding: var(--space-5);
  width: 100%;
}

#interviewContent .device-panel-top {
  margin-top: 0;
}

.device-panel-top .device-grid {
  gap: var(--interview-gap);
}

.tabs {
  margin-top: var(--space-8);
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.tab-btn {
  border: 1px solid #b6beca;
  background: #f9fafb;
  color: #374151;
  border-radius: 10px;
  padding: 0.6rem 0.95rem;
  font-size: 0.92rem;
  cursor: pointer;
}

.tab-btn.active {
  background: #2563eb;
  border-color: #2563eb;
  color: #ffffff;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.preview-card {
  margin-top: var(--space-5);
  background: #111827;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 16 / 9;
  width: 100%;
}

#interviewContent .panel {
  margin-top: var(--interview-gap);
  padding: var(--space-5);
}

#interviewContent .preview-card,
#interviewContent .controls {
  margin-top: var(--interview-gap);
}

@media (max-height: 820px) {
  :root {
    --interview-reserve-height: 270px;
  }
}

#preview,
#playback {
  width: 100%;
  height: 100%;
  background: #111827;
}

.no-camera-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #d1d5db;
  font-weight: 600;
  letter-spacing: 0.2px;
  text-align: center;
  padding: 1rem;
}

.no-camera-icon {
  width: min(160px, 30%);
  height: auto;
  opacity: 0.95;
}

.answer-recorded-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6);
  color: #ffffff;
  font-weight: 600;
  line-height: 1.45;
  background: linear-gradient(160deg, rgba(22, 163, 74, 0.88) 0%, rgba(5, 150, 105, 0.88) 55%, rgba(4, 120, 87, 0.9) 100%);
  z-index: 3;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--interview-gap);
}

.device-grid > div {
  min-width: 0;
}

.device-grid .text-input {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 800px) {
  .interview-top-row {
    grid-template-columns: 1fr;
  }

  .device-panel-top {
    margin-top: var(--space-4);
  }

  .device-grid {
    grid-template-columns: 1fr;
  }
}

.controls {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.record-controls {
  align-items: center;
}

.record-controls .btn {
  margin-top: 0;
}

.record-controls .timer-wrap {
  margin: 0;
}

@media (max-width: 640px) {
  .record-controls {
    align-items: flex-start;
  }
}

.submit-right {
  margin-left: auto;
  background: #16a34a;
  color: white;
}

.btn {
  border: none;
  border-radius: 10px;
  margin-top: var(--space-3);
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.primary {
  background: #2563eb;
  color: white;
}

.success {
  background: #16a34a;
  color: white;
}

.record-action-btn {
  width: 12rem;
  white-space: nowrap;
}

.secondary {
  background: #374151;
  color: white;
}

.danger {
  background: #dc2626;
  color: white;
}

.download {
  margin-top: 0.75rem;
  background: #059669;
  color: white;
}

.status-wrap {
  margin-top: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.status {
  margin: 0;
  color: #374151;
}

.timer {
  margin: 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.timer.timer-warning {
  color: #dc2626;
}

.timer.timer-pulse {
  animation: timerPulse 0.9s ease-in-out infinite;
}

@keyframes timerPulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.7;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.timer-wrap {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.timer-label {
  color: #4b5563;
  font-weight: 600;
}

.result {
  margin-top: 1.25rem;
  border-top: 1px solid #e5e7eb;
  padding-top: 1rem;
}

.hidden {
  display: none;
}

.submit-message {
  margin-top: 0.75rem;
  color: #14532d;
  font-weight: 600;
}

.auth-panel {
  max-width: 460px;
  margin-inline: auto;
  margin-top: var(--space-7);
  text-align: center;
}

.auth-panel h2 {
  margin-bottom: var(--space-4);
}

#googleSignInBtn {
  display: flex;
  justify-content: center;
  margin-top: var(--space-4);
}

#logoutBtn {
  margin-top: var(--space-4);
}

.panel {
  margin-top: var(--space-8);
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: var(--space-6);
}

#createInterviewPanel {
  padding: var(--space-8);
}

#createInterviewPanel .create-interview-grid {
  margin: 0;
  column-gap: var(--space-8);
  row-gap: var(--space-8);
}

#createInterviewPanel .btn {
  margin-top: 0;
}

#questionBanksPanel {
  padding: var(--space-8);
}

#generatedPanel {
  padding: var(--space-8);
}

#questionBanksPanel .question-fields {
  margin: 0;
  gap: var(--space-8);
}

#questionBanksPanel .question-row,
#questionBanksPanel .question-bank-upload-grid {
  column-gap: var(--space-8);
  row-gap: var(--space-8);
}

#questionBanksPanel .question-bank-upload-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr)) 44px;
  margin: var(--space-8) 0 0;
}

#questionBanksPanel .question-bank-upload-grid .field-group:first-child {
  grid-column: 1;
}

#questionBanksPanel .question-bank-upload-grid .field-group:last-child {
  grid-column: 2 / 4;
}

#questionBanksPanel .btn {
  margin-top: 0;
}

#bankStatus,
#createStatus {
  margin-top: var(--space-4);
}

.tc-box {
  width: 100%;
  min-height: 180px;
  resize: none;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 0.8rem;
  font-size: 0.95rem;
  line-height: 1.45;
  color: #374151;
  background: #f9fafb;
}

.row {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  flex-wrap: wrap;
}

.question-draft-list {
  margin: 0.65rem 0 0.8rem;
}

.question-input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: var(--space-6);
  row-gap: var(--space-4);
  align-items: end;
}

.question-action-row {
  margin-top: var(--space-4);
}

.question-fields {
  display: grid;
  gap: var(--space-4);
}

.question-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) 44px;
  column-gap: var(--space-6);
  row-gap: var(--space-4);
  align-items: center;
}

.question-row-labels {
  align-items: end;
  margin-bottom: var(--space-2);
}

.question-row-labels .field-label {
  margin-bottom: 0;
}

.question-row-remove {
  width: 100%;
}

.question-row-add {
  grid-column: 3;
}

.question-row-remove {
  grid-column: 3;
}

.icon-btn {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 10px;
  font-size: 1.1rem;
  line-height: 1;
  margin-top: 0;
}

.question-row-placeholder {
  display: none;
}

.question-bank-upload-grid,
.create-interview-grid {
  display: grid;
  column-gap: var(--space-6);
  row-gap: var(--space-4);
  align-items: end;
}

.question-bank-upload-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-block: var(--space-4);
}

.create-interview-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-block: var(--space-4);
}

.field-group {
  min-width: 0;
}

.question-maker-btn {
  width: 100%;
}

.file-input {
  width: 100%;
  padding: 0.5rem 0.6rem;
}

@media (max-width: 800px) {
  .question-input-grid,
  .question-bank-upload-grid,
  .create-interview-grid,
  .question-row {
    grid-template-columns: 1fr;
  }
}

.stage-question {
  margin: 0 0 var(--space-4);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  color: #111827;
}

.stage-meta {
  margin: 0 0 var(--space-3);
}

.stage-instruction {
  margin: 0;
  line-height: 1.55;
}

.field-label {
  display: block;
  margin-bottom: var(--space-3);
  font-weight: 600;
}

.text-input {
  flex: 1;
  width: 100%;
  min-width: 0;
  border: 1px solid #9ca3af;
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  font-size: 0.95rem;
}

.list-wrap {
  display: block;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

.interview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.interview-table th,
.interview-table td {
  border: 1px solid #e5e7eb;
  padding: 0.6rem 0.65rem;
  text-align: left;
  vertical-align: middle;
}

.interview-table th {
  background: #f9fafb;
  font-weight: 700;
}

.interview-table td a {
  color: #1d4ed8;
  text-decoration: none;
}

.interview-table td a:hover {
  text-decoration: underline;
}

.list-item {
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 0.75rem;
}

.list-item p {
  margin: 0;
}

.list-item .meta {
  margin-top: 0.35rem;
  color: #4b5563;
  font-size: 0.9rem;
}

.list-item a {
  display: inline-block;
  margin-top: 0.45rem;
  color: #1d4ed8;
  text-decoration: none;
}

.list-item a:hover {
  text-decoration: underline;
}

.question-bank-table-wrap {
  margin-top: var(--space-5);
}

.question-bank-table td {
  vertical-align: top;
}

.question-bank-table .btn {
  margin-top: 0;
  margin-right: var(--space-2);
  margin-bottom: var(--space-2);
}

.question-json {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.83rem;
  line-height: 1.4;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: var(--space-3);
  min-width: 320px;
}

@media (max-width: 768px) {
  body {
    padding: var(--space-3);
  }

  .app {
    width: 100%;
    border-radius: 12px;
    padding: var(--space-5);
  }

  h1 {
    font-size: 1.35rem;
  }

  .tabs {
    margin-top: var(--space-5);
    gap: var(--space-3);
  }

  .tab-btn {
    width: 100%;
    text-align: center;
  }

  .panel {
    margin-top: var(--space-5);
    padding: var(--space-5);
  }

  #createInterviewPanel,
  #questionBanksPanel,
  #generatedPanel {
    padding: var(--space-5);
  }

  #createInterviewPanel .create-interview-grid,
  #questionBanksPanel .question-row,
  #questionBanksPanel .question-bank-upload-grid,
  #questionBanksPanel .question-fields {
    column-gap: var(--space-5);
    row-gap: var(--space-5);
    gap: var(--space-5);
  }

  #questionBanksPanel .question-row {
    grid-template-columns: minmax(0, 1fr) 44px;
    align-items: center;
  }

  #questionBanksPanel .question-row-text {
    grid-column: 1 / -1;
  }

  #questionBanksPanel .question-row-time {
    grid-column: 1;
  }

  #questionBanksPanel .question-row-add,
  #questionBanksPanel .question-row-remove {
    grid-column: 2;
    justify-self: end;
  }

  #questionBanksPanel .question-bank-upload-grid {
    grid-template-columns: 1fr;
    margin-top: var(--space-5);
  }

  #questionBanksPanel .question-bank-upload-grid .field-group:first-child,
  #questionBanksPanel .question-bank-upload-grid .field-group:last-child {
    grid-column: auto;
  }

  .interview-table {
    font-size: 0.86rem;
  }

  .interview-table th,
  .interview-table td {
    padding: 0.5rem;
  }
}