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

body {
  font-family: Arial, sans-serif;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  min-height: 100vh;
  padding: 20px 10px;
  margin: 0;
}

/* ── Camera view (always visible, inline) ────────────────────────────────── */

#barcode-scanner-view {
  position: relative;
  width: 100%;
  max-width: 400px;
  height: 240px;
  margin-bottom: 8px;
  border-radius: 8px;
  overflow: hidden;
  background: #111;
}

/* Transparent overlay that catches clicks for play/pause */
#camera-toggle-area {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none; /* let SDK controls below receive clicks */
  z-index: 10;
}

/* Play/pause icon — always visible when paused, shown on hover when playing */
#play-pause-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: auto; /* clickable */
  cursor: pointer;
}

/* Loading spinner — shown while SDK initialises */
#loading-spinner {
  display: none;
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.85);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  pointer-events: none;
}

#camera-toggle-area.loading {
  cursor: default;
}

#camera-toggle-area.loading #loading-spinner {
  display: block;
}

#camera-toggle-area.loading #play-pause-icon {
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Pause symbol (two bars) — shown when playing */
#play-pause-icon::before,
#play-pause-icon::after {
  content: "";
  display: block;
  width: 5px;
  height: 18px;
  background: #fff;
  border-radius: 2px;
  position: absolute;
}

#play-pause-icon::before { transform: translateX(-5px); }
#play-pause-icon::after  { transform: translateX(5px); }

/* Play symbol (triangle) — shown when paused */
#camera-toggle-area.paused #play-pause-icon::before,
#camera-toggle-area.paused #play-pause-icon::after {
  content: none;
}

#camera-toggle-area.paused #play-pause-icon {
  opacity: 1;
  background: rgba(0, 0, 0, 0.55);
  /* Triangle via border trick */
  position: relative;
}

#camera-toggle-area.paused #play-pause-icon::before {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  background: none;
  border-radius: 0;
  transform: translateX(3px);
  position: static;
}

/* Show pause icon on hover when playing */
#camera-toggle-area:not(.paused):hover #play-pause-icon {
  opacity: 1;
}

/* ── Input bar + submit button ───────────────────────────────────────────── */

#container {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 400px;
}

#text-input {
  flex: 1;
  height: 48px;
  padding: 0 12px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-right: none;
  border-radius: 6px 0 0 6px;
  box-sizing: border-box;
}

#text-input:focus {
  outline: none;
  border-color: #ff5000;
}

#search-btn {
  width: 48px;
  height: 48px;
  background-color: #ff5000;
  color: #fff;
  border: none;
  border-radius: 0 6px 6px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s;
}

#search-btn:hover {
  background-color: #e54c00;
}

.search-icon {
  position: relative;
  width: 20px;
  height: 20px;
  border: 3px solid white;
  border-radius: 50%;
  box-sizing: border-box;
}

.search-icon::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 3px;
  background: white;
  transform: rotate(45deg);
  right: -6px;
  bottom: -3px;
  transform-origin: center;
}

h1 {
  text-align: center;
  margin-bottom: 6px;
}

h2 {
  text-align: center;
  font-size: 14px;
  font-weight: normal;
  color: #666;
  margin-bottom: 20px;
  max-width: 400px;
}

/* ── Filter toggle row ───────────────────────────────────────────────────── */

#filter-row {
  display: flex;
  justify-content: flex-end;
  width: 100%;
  max-width: 400px;
  margin-top: 8px;
}

#filter-toggle-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border: 1px solid #ddd;
  border-radius: 20px;
  background: #f8f8f8;
  font-size: 13px;
  color: #555;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

#filter-toggle-btn:hover {
  background: #f0f0f0;
  border-color: #bbb;
}

#filter-toggle-btn.open {
  background: #fff3ee;
  border-color: #ff5000;
  color: #ff5000;
}

#filter-badge {
  color: #ff5000;
  font-size: 10px;
}

/* ── Filter panel ────────────────────────────────────────────────────────── */

#filters-panel {
  width: 100%;
  max-width: 400px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 14px 16px;
  background: #fafafa;
  margin-top: 6px;
}

.filter-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 0;
}

.filter-section:first-child {
  padding-top: 0;
}

.filter-section:last-child {
  padding-bottom: 0;
}

.filter-section + .filter-section {
  border-top: 1px solid #ebebeb;
}

.filter-section-title {
  font-size: 11px;
  font-weight: 700;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.filter-hint {
  font-size: 11px;
  color: #bbb;
  margin-top: -4px;
}

/* ── Format presets ──────────────────────────────────────────────────────── */

.preset-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preset-btn {
  padding: 4px 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #fff;
  font-size: 12px;
  color: #555;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.preset-btn:hover {
  background: #f5f5f5;
  border-color: #bbb;
}

.preset-btn.active {
  background: #ff5000;
  border-color: #ff5000;
  color: #fff;
}

/* ── Custom formats grid ─────────────────────────────────────────────────── */

#custom-formats-wrapper {
  margin-top: 4px;
}

#custom-formats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 6px;
}

.format-checkbox-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: #444;
  cursor: pointer;
}

.format-checkbox-label input[type="checkbox"] {
  accent-color: #ff5000;
  width: 14px;
  height: 14px;
  cursor: pointer;
  flex-shrink: 0;
}

/* ── Length filter ───────────────────────────────────────────────────────── */

.length-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.length-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #555;
}

.length-label input[type="number"] {
  width: 70px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 13px;
  text-align: center;
  -moz-appearance: textfield;
}

.length-label input[type="number"]::-webkit-outer-spin-button,
.length-label input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.length-label input[type="number"]:focus {
  outline: none;
  border-color: #ff5000;
}

.length-dash {
  color: #bbb;
  font-size: 16px;
}

.length-unit {
  font-size: 13px;
  color: #999;
}

/* ── Keyword rules ───────────────────────────────────────────────────────── */

#keyword-rules-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rule-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.rule-type-select {
  height: 32px;
  padding: 0 6px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 12px;
  color: #444;
  background: #fff;
  cursor: pointer;
  flex-shrink: 0;
}

.rule-type-select:focus {
  outline: none;
  border-color: #ff5000;
}

.rule-value-input {
  flex: 1;
  min-width: 80px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 13px;
}

.rule-value-input:focus {
  outline: none;
  border-color: #ff5000;
}

.rule-remove-btn {
  width: 28px;
  height: 28px;
  border: none;
  background: none;
  color: #bbb;
  font-size: 14px;
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}

.rule-remove-btn:hover {
  background: #fef0f0;
  color: #c00;
}

.add-rule-btn {
  align-self: flex-start;
  padding: 5px 12px;
  border: 1px dashed #ddd;
  border-radius: 4px;
  background: #fff;
  font-size: 12px;
  color: #777;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.add-rule-btn:hover {
  border-color: #ff5000;
  color: #ff5000;
}

/* ── Result textarea ─────────────────────────────────────────────────────── */

textarea {
  width: 100%;
  max-width: 400px;
  height: 300px;
  margin-top: 20px;
  padding: 10px;
  font-size: 1em;
  border: 1px solid #ccc;
  border-radius: 5px;
  resize: vertical;
  transition: border-color 0.3s;
}

textarea:focus {
  border-color: #007bff;
  outline: none;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  #barcode-scanner-view {
    height: 200px;
  }

  #text-input {
    height: 40px;
    font-size: 14px;
  }

  #search-btn {
    width: 40px;
    height: 40px;
  }

  textarea {
    height: 200px;
    font-size: 14px;
  }

  .rule-row {
    flex-wrap: wrap;
  }

  .rule-type-select {
    width: 100%;
  }
}