:root {
  color-scheme: light;
  --bg: #eef5f1;
  --panel: #ffffff;
  --ink: #17201c;
  --muted: #64736b;
  --line: #d9e3dc;
  --accent: #087b6f;
  --accent-dark: #075f57;
  --accent-soft: #dff4ef;
  --warn: #c06b12;
  --danger: #b42318;
  --soft-warn: #fff7ed;
  --soft-accent: #e6f4f1;
  --shadow: 0 20px 55px rgba(23, 32, 28, 0.1);
  --shadow-soft: 0 10px 28px rgba(23, 32, 28, 0.07);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -10%, rgba(8, 123, 111, 0.18), transparent 32%),
    radial-gradient(circle at 95% 4%, rgba(245, 158, 11, 0.16), transparent 28%),
    linear-gradient(180deg, #f7faf7 0%, var(--bg) 46%, #eaf2ed 100%);
  color: var(--ink);
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
}

body.login-locked {
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.login-screen {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at 26% 18%, rgba(245, 158, 11, 0.22), transparent 26%),
    radial-gradient(circle at 72% 20%, rgba(8, 123, 111, 0.2), transparent 30%),
    linear-gradient(135deg, #edf7f2 0%, #f9fbf8 52%, #fff7ed 100%);
}

.login-card {
  display: grid;
  gap: 14px;
  width: min(420px, 100%);
  padding: 26px;
  border: 1px solid rgba(8, 123, 111, 0.16);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.login-logo {
  width: 104px;
  height: 104px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.login-card h1 {
  margin: 0;
  font-size: 34px;
  letter-spacing: 0;
}

.login-card label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.login-error {
  min-height: 20px;
  margin: 0;
  color: var(--danger);
  font-size: 13px;
  font-weight: 800;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px clamp(16px, 4vw, 40px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  display: block;
  width: 74px;
  height: 74px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  object-fit: contain;
  box-shadow: var(--shadow-soft);
}

.app-header h1,
.panel h2 {
  margin: 0;
  letter-spacing: 0;
}

.app-header h1 {
  font-size: clamp(24px, 4vw, 38px);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.header-summary {
  display: grid;
  gap: 4px;
  text-align: right;
  color: var(--muted);
}

.stock-alert-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-weight: 700;
}

.stock-alert-button strong {
  color: var(--warn);
}

.stock-alert-button.has-alert {
  border-color: #f5c56b;
  background: var(--soft-warn);
}

.alert-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #fff;
  color: var(--warn);
}

.alert-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.stock-alert-button.has-alert .alert-icon::after {
  content: "";
  position: absolute;
  top: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
}

.page-nav {
  display: flex;
  gap: 8px;
  padding: 12px clamp(16px, 4vw, 40px);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  backdrop-filter: blur(18px);
}

.nav-button {
  min-height: 40px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

.nav-button.active {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, #0e9f88 100%);
  color: #fff;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.75fr);
  gap: 18px;
  padding: 18px clamp(16px, 4vw, 40px) 40px;
}

.page {
  display: none;
}

.page.active {
  display: grid;
}

.panel {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(217, 227, 220, 0.9);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 18px;
  backdrop-filter: blur(12px);
}

.inventory-panel,
.stock-in-panel,
.history-panel,
.item-report-panel {
  grid-column: 1 / -1;
}

.panel-title-row,
.form-actions,
.cart-row,
.product-card,
.total-row,
.change-row,
.history-summary,
.item-report-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.history-overview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 16px;
  margin-bottom: 16px;
}

.cashier-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.cashier-summary div {
  display: grid;
  gap: 4px;
  min-height: 74px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.cashier-summary span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.cashier-summary strong {
  font-size: 22px;
}

.panel-title-row {
  margin-bottom: 16px;
}

.panel h2 {
  font-size: 22px;
}

.search-area,
.barcode-sale-form,
.inventory-form label,
.stock-in-form label,
.report-toolbar label,
.payment-box label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.barcode-sale-form {
  margin-bottom: 14px;
}

.barcode-row,
.report-toolbar {
  display: flex;
  align-items: end;
  gap: 10px;
}

.barcode-row input,
.report-toolbar label {
  flex: 1;
}

.barcode-row .primary-button,
.report-toolbar .primary-button {
  white-space: nowrap;
}

input {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
}

select {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
}

input:focus,
select:focus {
  outline: 3px solid rgba(15, 118, 110, 0.18);
  border-color: var(--accent);
}

.product-list,
.cart-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.pager-numbers {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pager-button,
.pager-number {
  min-width: 42px;
}

.pager-number {
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
}

.pager-number.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.pager-ellipsis {
  color: var(--muted);
  font-weight: 700;
}

.product-card,
.cart-row {
  min-height: 66px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.product-card strong,
.cart-name {
  display: block;
  margin-bottom: 4px;
}

.product-meta,
.cart-meta,
.empty-state {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.stock-warning {
  color: var(--warn);
  font-weight: 700;
}

.product-card.out {
  background: #f8f8f7;
  color: var(--muted);
}

.qty-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-button {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
}

.primary-button,
.secondary-button,
.danger-button {
  min-height: 40px;
  border-radius: 10px;
  padding: 9px 13px;
  font-weight: 700;
}

.primary-button {
  border: 1px solid var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, #0e9f88 100%);
  color: #fff;
  box-shadow: 0 10px 18px rgba(8, 123, 111, 0.2);
}

.primary-button:hover {
  background: var(--accent-dark);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
}

.danger-button {
  border: 1px solid #f4c7c3;
  background: #fff;
  color: var(--danger);
}

.payment-box {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.total-row strong,
.change-row strong {
  font-size: 24px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 12px;
}

.form-actions {
  justify-content: flex-start;
  margin: 14px 0 16px;
}

.stock-in-grid {
  grid-template-columns: minmax(220px, 1.2fr) minmax(130px, 0.6fr) minmax(220px, 1fr) minmax(120px, 0.5fr);
}

input[readonly] {
  background: #f8faf8;
  color: var(--muted);
}

.history-summary {
  display: grid;
  grid-template-columns: 1fr;
  align-content: stretch;
  gap: 12px;
}

.item-report-summary {
  justify-content: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.report-toolbar {
  align-items: end;
  justify-content: flex-start;
  margin-bottom: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.history-summary div {
  display: grid;
  gap: 4px;
  min-width: 0;
  min-height: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.item-report-summary div {
  display: grid;
  gap: 4px;
  min-width: 190px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.history-summary span,
.item-report-summary span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.history-summary strong,
.item-report-summary strong {
  font-size: 22px;
}

.is-hidden {
  display: none !important;
}

.chart-panel {
  display: grid;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  min-width: 0;
  box-shadow: var(--shadow-soft);
}

.chart-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.chart-head h3 {
  margin: 0;
  font-size: 18px;
}

.monthly-chart {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 4px;
  min-width: 0;
}

.line-chart {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

.chart-grid {
  stroke: #e7ece5;
  stroke-width: 1;
}

.chart-axis {
  stroke: var(--line);
  stroke-width: 2;
}

.chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 4;
}

.chart-point circle {
  fill: #fff;
  stroke: var(--accent);
  stroke-width: 3;
}

.chart-point.active circle {
  fill: #f59e0b;
  stroke: #ea580c;
}

.chart-value,
.chart-month {
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
}

.chart-value {
  fill: var(--ink);
}

.chart-month {
  fill: var(--muted);
}

.monthly-total-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.monthly-total-item {
  display: grid;
  gap: 3px;
  min-height: 54px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.monthly-total-item span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.monthly-total-item strong {
  color: var(--ink);
  font-size: 14px;
}

.monthly-total-item.active {
  border-color: #f5c56b;
  background: var(--soft-warn);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(217, 227, 220, 0.92);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  background: #f3f8f5;
  color: var(--muted);
  font-size: 13px;
}

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

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--soft-accent);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
}

.status-pill.warn {
  background: var(--soft-warn);
  color: var(--warn);
}

.status-pill.danger {
  background: #fff1f0;
  color: var(--danger);
}

.table-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: min(360px, calc(100vw - 36px));
  padding: 12px 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, #17201c 0%, #31453b 100%);
  color: #fff;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(23, 32, 28, 0.5);
  backdrop-filter: blur(8px);
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-panel {
  width: min(560px, 100%);
  max-height: min(680px, calc(100vh - 36px));
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.low-stock-list {
  display: grid;
  gap: 10px;
}

.low-stock-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

@media print {
  body > :not(.receipt-print) {
    display: none !important;
  }
}

@media (max-width: 1180px) {
  .history-overview {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  }
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .history-overview {
    grid-template-columns: 1fr;
  }

  .history-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .item-report-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .item-report-summary div {
    min-width: 0;
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .monthly-total-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .app-header,
  .brand-block,
  .panel-title-row,
  .product-card,
  .cart-row,
  .barcode-row,
  .report-toolbar,
  .chart-head,
  .pager {
    align-items: stretch;
    flex-direction: column;
  }

  .header-summary {
    text-align: left;
    width: 100%;
  }

  .stock-alert-button,
  .logout-button {
    width: 100%;
  }

  .page-nav {
    padding: 10px 16px;
  }

  .layout {
    padding: 14px 16px 28px;
  }

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

  .history-summary {
    grid-template-columns: 1fr;
  }

  .item-report-summary {
    grid-template-columns: 1fr;
  }

  .cashier-summary {
    grid-template-columns: 1fr;
  }

  .line-chart {
    min-width: 560px;
  }

  .monthly-total-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .app-header {
    padding: 16px;
  }

  .brand-logo {
    width: 58px;
    height: 58px;
  }

  .app-header h1 {
    font-size: 24px;
  }

  .panel {
    padding: 14px;
  }

  .monthly-total-list {
    grid-template-columns: 1fr;
  }
}