:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #5a5a5a;
  --border: #111111;
  --hover: #e0e0e0;
  --grid: #f1f1f1;
}

* {
  box-sizing: border-box;
  border-radius: 0;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  min-height: 100vh;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.brand h1 {
  margin: 0 0 4px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: 0.02em;
}

.brand p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tab-button {
  border: 2px solid var(--border);
  padding: 10px 18px;
  background: var(--bg);
  color: var(--text);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.tab-button:hover {
  background: var(--hover);
}

.tab-button.active {
  background: var(--text);
  color: var(--bg);
}

.tabs-bottom {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  border-top: 2px solid var(--border);
  background: var(--bg);
  z-index: 100;
}

.tabs-bottom .tab-button + .tab-button {
  border-left: 2px solid var(--border);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: rise 0.5s ease;
}

main {
  display: grid;
  justify-items: center;
}

main > section {
  width: 100%;
}

.manage-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr);
}

.scan-panel,
.info-panel {
  min-width: 0;
}

.panel {
  border: 2px solid var(--border);
  padding: 20px;
  background: var(--bg);
}

.panel-header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.4rem;
}

.panel-meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

th,
td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 2px solid var(--border);
}

th {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

tbody tr {
  transition: background-color 0.2s ease;
}

tbody tr:hover {
  background: var(--hover);
}

.scan-center {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding: 32px 12px 16px;
  margin: 0;
  width: 100%;
}

#barcode-input {
  width: min(520px, 100%);
  min-width: 0;
  border: 2px solid var(--border);
  padding: 12px 14px;
  font-size: 1rem;
  background: var(--bg);
  color: var(--text);
}

.scan-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

button {
  border: 2px solid var(--border);
  padding: 10px 18px;
  background: var(--bg);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

button:hover {
  background: var(--hover);
}

button.primary {
  background: var(--text);
  color: var(--bg);
}

button.primary:hover {
  background: var(--hover);
  color: var(--text);
}

.scan-area {
  display: grid;
  justify-items: center;
  gap: 12px;
  padding-bottom: 16px;
  width: 100%;
}

.scan-area.hidden,
.form-area.hidden,
.data-form.hidden {
  display: none;
}

.video-frame {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 21 / 9;
  border: 2px solid var(--border);
  position: relative;
  overflow: hidden;
  background: #000000;
  box-sizing: border-box;
}

.video-frame::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: rgba(255, 0, 0, 0.8);
  transform: translateX(-1px);
  pointer-events: none;
  z-index: 2;
}

#camera {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}

.scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  top: 50%;
  transform: translateY(-1px);
  background: rgba(255, 0, 0, 0.8);
  pointer-events: none;
  z-index: 2;
}

.scan-status {
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
}

.form-area {
  display: grid;
  gap: 16px;
  margin-top: 24px;
  grid-template-columns: minmax(0, 1fr);
  width: 100%;
  min-width: 0;
}

.info-panel .form-area {
  margin-top: 0;
}

.form-status {
  text-align: center;
  font-weight: 600;
}

.data-form {
  border: 2px solid var(--border);
  padding: 16px;
  display: grid;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
  animation: fadein 0.4s ease;
  min-width: 0;
  box-sizing: border-box;
}

.info-panel .data-form {
  max-width: 100%;
  width: 100%;
}

.data-form h3 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}

.data-form label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
}

.data-form input {
  border: 2px solid var(--border);
  padding: 10px 12px;
  font-size: 0.95rem;
  background: var(--bg);
  color: var(--text);
}

.dropdown {
  position: relative;
  width: 100%;
  min-width: 0;
}

.dropdown-trigger {
  width: 100%;
  border: 2px solid var(--border);
  padding: 10px 12px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.dropdown-trigger:hover {
  background: var(--hover);
}

.dropdown-trigger::after {
  content: "";
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--text);
  margin-left: 12px;
}

.dropdown-value.placeholder {
  color: var(--muted);
}

.dropdown-menu {
  position: static;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  margin-top: 8px;
  border: 2px solid var(--border);
  background: var(--bg);
  display: none;
  padding: 12px;
  gap: 12px;
  box-sizing: border-box;
}

.dropdown.open .dropdown-menu {
  display: grid;
}

.dropdown-options {
  max-height: 180px;
  overflow-y: auto;
  display: grid;
  gap: 10px;
  width: 100%;
}

.dropdown-option {
  width: 100%;
  border: 2px solid var(--border);
  background: var(--bg);
  padding: 10px 12px;
  text-align: left;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  overflow-wrap: anywhere;
}

.dropdown-option:hover {
  background: var(--hover);
}

.dropdown-option.selected {
  background: var(--text);
  color: var(--bg);
}

.dropdown-option.placeholder {
  cursor: default;
  color: var(--muted);
}

.dropdown-add {
  border: 2px solid var(--border);
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  width: 100%;
}

.dropdown-input {
  border: 2px solid var(--border);
  padding: 8px 10px;
  font-size: 0.9rem;
  background: var(--bg);
  color: var(--text);
}

.dropdown-add-button {
  padding: 8px 12px;
}

.data-form input:read-only {
  background: #f2f2f2;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

@keyframes scanline {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(calc(100% - 2px));
  }
  100% {
    transform: translateY(0);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (max-width: 800px) {
  .page {
    padding: 20px 20px 120px;
  }

  .site-header {
    align-items: center;
    text-align: center;
  }

  .brand {
    width: 100%;
  }

  .tabs-top {
    display: none;
  }

  .tabs-bottom {
    display: flex;
    gap: 0;
    flex-wrap: nowrap;
  }

  .tabs-bottom .tab-button {
    border: 0;
    flex: 1;
    padding: 14px 18px;
  }

  .tabs-bottom .tab-button + .tab-button {
    border-left: 2px solid var(--border);
  }

  .panel {
    padding: 16px;
  }

  .table-wrap {
    overflow-x: visible;
  }

  table,
  thead,
  tbody,
  tr,
  td {
    display: block;
    width: 100%;
  }

  table {
    min-width: 0;
  }

  thead {
    display: none;
  }

  tbody {
    display: grid;
    gap: 12px;
  }

  tbody tr {
    border: 2px solid var(--border);
  }

  tbody td {
    border: 0;
    border-bottom: 2px solid var(--border);
    padding: 10px 12px;
    display: grid;
    gap: 4px;
  }

  tbody td::before {
    content: attr(data-label);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    color: var(--muted);
  }

  tbody td:last-child {
    border-bottom: 0;
  }

  tbody tr.empty-row {
    border: 0;
  }

  tbody tr.empty-row td {
    border: 0;
  }

  tbody tr.empty-row td::before {
    display: none;
  }

  th,
  td {
    padding: 10px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
  }
}