.scanner-interface {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 100%;
  gap: var(--sp-4);
}

.scanner-tabs {
  display: flex;
  background: var(--bg-raised);
  padding: 4px;
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  gap: 4px;
  width: fit-content;
  max-width: 100%;
  margin-bottom: var(--sp-2);
}

.tab-btn {
  border: none;
  background: none;
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--t-fast) ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.scanner-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 100%;
  gap: var(--sp-4);
}

.video-container {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  background: #000;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-md);
}

#webcamVideo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.scanner-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.45);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-base) ease;
}

.video-container.is-live .scanner-overlay {
  opacity: 1;
}

.scanner-target-box {
  position: relative;
  width: 60%;
  max-width: 220px;
  aspect-ratio: 1;
  box-shadow: 0 0 0 4000px rgba(0, 0, 0, 0.45);
  border: 1px dashed rgba(255, 255, 255, 0.3);
}

.corner {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 3px solid var(--accent);
  pointer-events: none;
}

.top-left {
  top: -2px;
  left: -2px;
  border-right: none;
  border-bottom: none;
  border-top-left-radius: 4px;
}

.top-right {
  top: -2px;
  right: -2px;
  border-left: none;
  border-bottom: none;
  border-top-right-radius: 4px;
}

.bottom-left {
  bottom: -2px;
  left: -2px;
  border-right: none;
  border-top: none;
  border-bottom-left-radius: 4px;
}

.bottom-right {
  bottom: -2px;
  right: -2px;
  border-left: none;
  border-top: none;
  border-bottom-right-radius: 4px;
}

.scanner-line {
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 8px var(--accent);
  top: 0;
  animation: laserScan 2.4s linear infinite;
}

@keyframes laserScan {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

.camera-status {
  position: absolute;
  bottom: var(--sp-4);
  left: 0;
  right: 0;
  text-align: center;
  color: #fff;
  font-size: 12.5px;
  line-height: 1.5;
  padding: 8px var(--sp-4);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  z-index: 2;
}

.control-row {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
  width: 100%;
  max-width: 380px;
  flex-wrap: wrap;
}

.scanner-interface .btn-analyze {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.drop-zone {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1.3;
  border: 2px dashed var(--border-hi);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  padding: var(--sp-4);
  cursor: pointer;
  transition: all var(--t-base) ease;
  outline: none;
}

.drop-zone:hover,
.drop-zone.dragover,
.drop-zone:focus-visible {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.drop-zone.decode-error {
  border-color: var(--danger);
  background: rgba(224, 49, 49, 0.06);
}

.drop-icon {
  font-size: 42px;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
  transition: color var(--t-fast) ease;
}

.drop-zone:hover .drop-icon,
.drop-zone:focus-visible .drop-icon {
  color: var(--accent);
}

.drop-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  text-align: center;
  max-width: 250px;
  line-height: 1.5;
}

.result-verdict.v-info .verdict-icon-wrap,
.result-verdict.v-info .verdict-icon {
  background: var(--accent-glow);
}

.advice-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.payload-grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

.payload-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-3);
  padding: 10px var(--sp-3);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}

.payload-row .pk {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.payload-row .pv {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-primary);
  text-align: right;
  word-break: break-word;
}

.payload-raw {
  margin-top: var(--sp-2);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: var(--sp-3);
  border-radius: var(--r-sm);
  font-family: var(--mono);
  font-size: 13.5px;
  word-break: break-word;
  white-space: pre-wrap;
  color: var(--text-primary);
  max-height: 260px;
  overflow-y: auto;
}

.check-status.cs-neutral {
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .scanner-interface {
    gap: var(--sp-3);
  }

  .scanner-tabs {
    width: 100%;
    justify-content: stretch;
  }

  .tab-btn {
    flex: 1;
    padding: 11px 12px;
    min-height: 44px;
    font-size: 13px;
  }

  .video-container,
  .drop-zone {
    max-width: 100%;
  }

  .control-row {
    max-width: 100%;
  }

  .control-row .btn-analyze {
    flex: 1;
    width: 100%;
  }

  .main-content {
    padding-bottom: var(--sp-12, 48px);
  }
}

@media (max-width: 480px) {
  .main-content {
    padding-left: var(--sp-3);
    padding-right: var(--sp-3);

    margin-bottom: 24px;
  }

  .analyzer-card {
    padding: var(--sp-4) var(--sp-3);
  }

  .scanner-tabs {
    padding: 3px;
  }

  .tab-btn {
    padding: 10px 8px;
    font-size: 12.5px;
  }

  .video-container {
    max-width: min(100%, 78vh);
  }

  .scanner-target-box {
    width: 66%;
  }

  .drop-zone {
    aspect-ratio: 1.15;
    padding: var(--sp-3);
  }

  .drop-icon {
    font-size: 36px;
  }

  .drop-text {
    font-size: 13px;
    max-width: 90%;
  }

  .camera-status {
    font-size: 12px;
    bottom: var(--sp-3);
  }

  .control-row {
    flex-direction: column;
    gap: var(--sp-2);
  }

  .control-row .btn-analyze {
    width: 100%;
    min-height: 50px;
    font-size: 15px;
  }

  .result-columns {
    grid-template-columns: 1fr;
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
  }

  .payload-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .payload-row .pv {
    text-align: left;
  }

  .drop-text,
  .check-name,
  .advice-text {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scanner-line {
    animation: none;
    top: 50%;
  }
}