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

body {
  font-family: 'Transducer', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #ffffff;
  color: #1a1a1a;
  line-height: 1.6;
  font-weight: 400;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

header {
  background: transparent;
  padding: 0;
  margin-bottom: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e5e5e5;
  padding-bottom: 20px;
}

.header-content {
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  height: 50px;
  width: auto;
}

h1 {
  color: #1a1a1a;
  font-size: 1.5rem;
  font-weight: 500;
  margin: 0;
}

.loading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #666;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #e0e0e0;
  border-top: 2px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.hidden {
  display: none !important;
}

.error {
  background: #fee;
  color: #c33;
  padding: 15px;
  border-radius: 6px;
  margin-bottom: 20px;
  border-left: 4px solid #c33;
}

.btn {
  padding: 12px 24px;
  border: 1px solid #1a1a1a;
  border-radius: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  background: transparent;
  color: #1a1a1a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-width: 80px;
  text-align: center;
}

.btn:hover {
  background: #1a1a1a;
  color: #ffffff;
}

.btn-primary {
  background: #1a1a1a;
  color: #ffffff;
}

.btn-primary:hover {
  background: #333333;
}

.btn-success {
  background: #1a1a1a;
  color: #ffffff;
}

.btn-success:hover {
  background: #333333;
}

.btn-danger {
  background: transparent;
  color: #1a1a1a;
  border-color: #1a1a1a;
}

.btn-danger:hover {
  background: #1a1a1a;
  color: #ffffff;
}

.btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  background: #f5f5f5;
  color: #999;
  border-color: #e5e5e5;
}

.btn-small {
  padding: 8px 16px;
  font-size: 12px;
  margin: 0 4px;
}

/* Table view removed */

.amount-input {
  width: 80px;
  padding: 8px;
  border: 1px solid #e5e5e5;
  border-radius: 0;
  text-align: center;
  background: transparent;
  font-family: inherit;
}

.amount-input:focus {
  outline: none;
  border-color: #1a1a1a;
  background: #f9f9f9;
}

.stock-checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.no-data {
  text-align: center;
  padding: 40px;
  color: #666;
  background: transparent;
  border: 1px solid #e5e5e5;
}

.success-message {
  background: #f9f9f9;
  color: #1a1a1a;
  padding: 15px 20px;
  border: 1px solid #e5e5e5;
  margin-bottom: 20px;
  animation: slideInDown 0.3s ease-out;
  transform-origin: top;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Row update animations */
.row-updating {
  opacity: 0.7;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.row-updating td {
  position: relative;
}

.row-updating td::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid #e0e0e0;
  border-top: 2px solid #3498db;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Button loading state */
.btn-loading {
  position: relative;
  color: transparent !important;
  transition: all 0.2s ease;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid #e0e0e0;
  border-top: 2px solid #1a1a1a;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  opacity: 1;
}

/* White spinner for success buttons */
.btn-success.btn-loading::after {
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid #ffffff;
}


/* Smooth transitions for inputs */
.amount-input,
.stock-checkbox {
  transition: all 0.2s ease;
}

.amount-input:focus,
.stock-checkbox:focus {
  transform: scale(1.02);
}

/* Table animations removed */

/* Success state animation */
.row-success {
  animation: successPulse 0.6s ease-out;
}

@keyframes successPulse {
  0% {
    background-color: transparent;
  }

  50% {
    background-color: #f0f8f0;
  }

  100% {
    background-color: transparent;
  }
}

/* Grouped View */
.grouped-view {
  display: block;
}

.group {
  margin-bottom: 30px;
  border: 1px solid #e5e5e5;
  background: transparent;
}

.group-header {
  padding: 20px;
  background: #f9f9f9;
  border-bottom: 1px solid #e5e5e5;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.group-title {
  font-weight: 600;
  color: #1a1a1a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 14px;
}

.group-count {
  background: #1a1a1a;
  color: #ffffff;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.group-items {
  padding: 0;
}

.group-item {
  padding: 15px 20px;
  border-bottom: 1px solid #e5e5e5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease;
  gap: 16px;
}

.group-item:last-child {
  border-bottom: none;
}

.group-item:hover {
  background: #f9f9f9;
}

.group-item-content {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
  flex-wrap: nowrap;
}

.group-item-content>.group-item-name {
  flex: 0 0 auto;
}

.group-item-content>.group-item-ids {
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
}

.group-item-content>.group-item-amount {
  flex: 0 0 auto;
  white-space: nowrap;
  margin-left: 12px;
}

.group-item-content>.group-item-stock {
  flex: 0 0 auto;
  white-space: nowrap;
  margin-left: 12px;
}

.group-item-ids {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  flex: 1 1 auto;
  min-width: 0;
}

.id-badge {
  border: 1px dashed #ccc;
  padding: 2px 6px;
  font-size: 12px;
  color: #555;
  display: inline-flex;
  align-items: center;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

/* Keep subtle hover without pointer semantics */
.id-badge:hover {
  background: #f7f7f7;
  border-color: #c8c8c8;
}

.group-item-name {
  font-weight: 500;
  color: #1a1a1a;
  min-width: 200px;
}

.group-item-amount {
  display: flex;
  align-items: center;
  gap: 10px;
}

.group-item-amount input {
  width: 80px;
  padding: 8px;
  border: 1px solid #e5e5e5;
  border-radius: 0;
  text-align: center;
  background: transparent;
  font-family: inherit;
}

.group-item-amount input:focus {
  outline: none;
  border-color: #1a1a1a;
  background: #f9f9f9;
}

.group-item-stock {
  display: flex;
  align-items: center;
  gap: 10px;
}

.group-item-actions {
  display: flex;
  gap: 10px;
  margin-left: auto;
  padding-left: 16px;
}

/* Stock status indicators */
.stock-status {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
}

.stock-status.in-stock {
  background: #f0f8f0;
  color: #2d5a2d;
}

.stock-status.out-of-stock {
  background: #fef0f0;
  color: #a52a2a;
}

.stock-status.low-stock {
  background: #fff8f0;
  color: #a56a2a;
}

/* Empty group state */
.empty-group {
  padding: 40px 20px;
  text-align: center;
  color: #666;
  font-style: italic;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 20px 15px;
  }

  header {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
    margin-bottom: 30px;
  }

  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
    width: 100%;
  }

  .logo {
    height: 40px;
  }

  h1 {
    font-size: 1.25rem;
  }

  .loading {
    align-self: flex-end;
  }

  .btn {
    padding: 10px 16px;
    font-size: 13px;
  }

  .btn-small {
    padding: 6px 12px;
    font-size: 11px;
  }

  /* Table responsive */
  .stock-table {
    overflow-x: auto;
  }

  table {
    min-width: 600px;
  }

  th,
  td {
    padding: 12px 8px;
    font-size: 14px;
  }

  th {
    font-size: 11px;
  }

  .amount-input {
    width: 60px;
    padding: 6px;
    font-size: 14px;
  }

  /* Grouped view mobile */
  .group-header {
    padding: 15px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .group-title {
    font-size: 13px;
  }

  .group-count {
    font-size: 11px;
    padding: 3px 8px;
  }

  .group-item {
    padding: 12px 15px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .group-item-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    width: 100%;
  }

  .group-item-ids {
    width: 100%;
    gap: 8px;
  }

  .id-badge {
    font-size: 11px;
    padding: 2px 5px;
  }

  .group-item-name {
    min-width: auto;
    width: 100%;
    font-size: 14px;
  }

  .group-item-amount {
    width: 100%;
    justify-content: space-between;
  }

  .group-item-amount input {
    width: 70px;
    padding: 6px;
    font-size: 14px;
  }

  .group-item-stock {
    width: 100%;
    justify-content: space-between;
  }

  .group-item-actions {
    width: 100%;
    justify-content: flex-end;
    gap: 6px;
    margin-left: 0;
    margin-top: 8px;
  }

  .stock-status {
    font-size: 11px;
    padding: 3px 6px;
  }

  .no-data {
    padding: 30px 15px;
    font-size: 14px;
  }

  .error {
    padding: 12px;
    font-size: 14px;
  }

  .success-message {
    padding: 12px 15px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 15px 10px;
  }

  header {
    margin-bottom: 25px;
  }

  .logo {
    height: 35px;
  }

  h1 {
    font-size: 1.1rem;
  }

  .btn {
    padding: 8px 12px;
    font-size: 12px;
  }

  .btn-small {
    padding: 5px 8px;
    font-size: 10px;
  }

  th,
  td {
    padding: 8px 6px;
    font-size: 13px;
  }

  th {
    font-size: 10px;
  }

  .amount-input {
    width: 50px;
    padding: 4px;
    font-size: 13px;
  }

  .group-header {
    padding: 12px;
  }

  .group-title {
    font-size: 12px;
  }

  .group-count {
    font-size: 10px;
    padding: 2px 6px;
  }

  .group-item {
    padding: 10px 12px;
  }

  .group-item-name {
    font-size: 13px;
  }

  .group-item-ids {
    gap: 6px;
  }

  .id-badge {
    font-size: 10px;
    padding: 2px 4px;
  }

  .group-item-amount input {
    width: 60px;
    padding: 4px;
    font-size: 13px;
  }

  .stock-status {
    font-size: 10px;
    padding: 2px 4px;
  }

  .no-data {
    padding: 25px 10px;
    font-size: 13px;
  }

  .error {
    padding: 10px;
    font-size: 13px;
  }

  .success-message {
    padding: 10px 12px;
    font-size: 13px;
  }
}

/* Touch-friendly improvements for mobile */
@media (max-width: 768px) {

  .btn,
  .amount-input,
  .stock-checkbox {
    min-height: 44px;
    /* iOS minimum touch target */
  }

  .btn-small,
  .group-item-actions .btn {
    min-height: 36px;
  }
}