:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-soft: #21262d;
  --surface-strong: #30363d;

  --text: #f0f6fc;
  --muted: #8b949e;
  --muted-2: #6e7681;
  --border: #30363d;

  --primary: #238636;
  --primary-dark: #1f6f2f;
  --primary-soft: rgba(35, 134, 54, 0.16);

  --blue: #2f81f7;
  --blue-dark: #1f6feb;
  --blue-soft: rgba(47, 129, 247, 0.16);

  --success: #3fb950;
  --success-soft: rgba(63, 185, 80, 0.16);

  --warning: #d29922;
  --warning-soft: rgba(210, 153, 34, 0.16);

  --danger: #f85149;
  --danger-soft: rgba(248, 81, 73, 0.16);

  --neutral: #8b949e;
  --neutral-soft: rgba(139, 148, 158, 0.14);

  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --transition: 160ms ease;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

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

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.app-shell {
  width: min(1480px, 100%);
  margin: 0 auto;
  padding: 28px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo-wrap {
  width: 74px;
  height: 74px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
}

.brand-logo {
  width: 82%;
  height: 82%;
  object-fit: contain;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 6px;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

h2 {
  margin-bottom: 4px;
  font-size: 1.12rem;
}

h3 {
  margin-bottom: 12px;
  font-size: 0.98rem;
  color: var(--blue);
}

.subtitle,
.panel-header p,
.modal-header p {
  margin-bottom: 0;
  color: var(--muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  min-height: 42px;
  border: 0;
  border-radius: 999px;
  padding: 0 18px;
  font-weight: 800;
  transition:
    background var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-gold {
  background: var(--blue);
  color: #ffffff;
}

.btn-gold:hover:not(:disabled) {
  background: var(--blue-dark);
}

.btn-secondary {
  background: var(--surface-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--surface-strong);
  border-color: #58a6ff;
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid rgba(248, 81, 73, 0.32);
}

.btn-danger:hover:not(:disabled) {
  background: rgba(248, 81, 73, 0.24);
}

.btn-small {
  min-height: 34px;
  padding: 0 12px;
  font-size: 0.82rem;
}

.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.92rem;
}

.status-label {
  color: var(--text);
  font-weight: 800;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 4px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
}

.status-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.status-loading {
  background: var(--neutral-soft);
  color: var(--neutral);
}

.status-online {
  background: var(--success-soft);
  color: var(--success);
}

.status-offline {
  background: var(--danger-soft);
  color: var(--danger);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.dashboard-card {
  min-height: 112px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.dashboard-card .card-label {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.dashboard-card strong {
  display: block;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.dashboard-card.warning {
  border-color: rgba(210, 153, 34, 0.45);
}

.dashboard-card.warning strong {
  color: var(--warning);
}

.dashboard-card.danger {
  border-color: rgba(248, 81, 73, 0.45);
}

.dashboard-card.danger strong {
  color: var(--danger);
}

.dashboard-card.neutral strong {
  color: var(--neutral);
}

.dashboard-card.gold {
  border-color: rgba(47, 129, 247, 0.5);
}

.dashboard-card.gold strong {
  color: var(--blue);
}

.card-text-value {
  font-size: 1rem !important;
  line-height: 1.3 !important;
  letter-spacing: 0 !important;
}

.sales-dashboard {
  margin-bottom: 18px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 370px;
  gap: 18px;
  align-items: start;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-soft);
}

.panel-header.simple {
  display: block;
}

.search-box {
  width: min(420px, 100%);
}

.search-box input,
.product-form input,
.product-form select,
.form-select,
.report-controls input,
.quantity-editor input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background var(--transition);
}

.product-form select,
.form-select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--blue) 50%),
    linear-gradient(135deg, var(--blue) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 18px,
    calc(100% - 13px) 18px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 34px;
}

.product-form option {
  background: var(--surface);
  color: var(--text);
}

.search-box input::placeholder,
.product-form input::placeholder {
  color: var(--muted-2);
}

.search-box input:focus,
.product-form input:focus,
.product-form select:focus,
.report-controls input:focus,
.quantity-editor input:focus {
  border-color: #58a6ff;
  background: #0d1117;
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.18);
}

.feedback {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  border: 1px solid transparent;
}

.feedback.success {
  background: var(--success-soft);
  color: var(--success);
  border-color: rgba(63, 185, 80, 0.24);
}

.feedback.error {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: rgba(248, 81, 73, 0.24);
}

.feedback.info {
  background: var(--neutral-soft);
  color: var(--neutral);
  border-color: rgba(139, 148, 158, 0.24);
}

.hidden {
  display: none !important;
}

.table-wrapper {
  width: 100%;
  overflow-x: auto;
}

.stock-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
}

.stock-table th,
.stock-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}

.stock-table th {
  background: var(--surface-soft);
  color: #58a6ff;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.stock-table td {
  color: var(--text);
  font-size: 0.92rem;
}

.stock-table tbody tr {
  transition: background var(--transition);
}

.stock-table tbody tr:hover {
  background: #1c2128;
}

.product-name {
  font-weight: 850;
}

.product-id {
  display: block;
  margin-top: 3px;
  color: var(--muted-2);
  font-size: 0.78rem;
}

.quantity-editor {
  display: flex;
  align-items: center;
  gap: 6px;
}

.quantity-editor input {
  width: 76px;
  min-height: 34px;
  padding: 0 8px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 850;
  white-space: nowrap;
}

.status-normal {
  background: var(--success-soft);
  color: var(--success);
}

.status-low {
  background: var(--warning-soft);
  color: var(--warning);
}

.status-out {
  background: var(--danger-soft);
  color: var(--danger);
}

.status-check {
  margin-top: 5px;
  background: var(--neutral-soft);
  color: var(--neutral);
}

.row-low {
  background: rgba(210, 153, 34, 0.08);
}

.row-out {
  background: rgba(248, 81, 73, 0.08);
}

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

.empty-state {
  padding: 44px 16px !important;
  color: var(--muted);
  text-align: center !important;
}

.empty-text {
  color: var(--muted);
  margin-bottom: 0;
}

.chart-panel {
  position: sticky;
  top: 20px;
}

.chart-container {
  min-height: 320px;
  padding: 20px;
}

.chart-container.compact {
  min-height: 260px;
  padding: 10px 0 0;
}

.monthly-report-panel {
  margin-top: 18px;
}

.report-header {
  align-items: center;
}

.report-controls {
  display: flex;
  align-items: end;
  gap: 10px;
  flex-wrap: wrap;
}

.report-controls label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.report-controls input {
  min-width: 180px;
}

.report-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 370px;
  gap: 18px;
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.report-chart-box,
.report-summary-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  padding: 16px;
}

.top-products-list {
  display: grid;
  gap: 10px;
}

.top-product-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.top-product-item strong {
  display: block;
  margin-bottom: 3px;
}

.top-product-item span {
  color: var(--muted);
  font-size: 0.84rem;
}

.top-product-value {
  color: var(--blue);
  font-weight: 900;
  white-space: nowrap;
}

.sales-table {
  min-width: 900px;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(1, 4, 9, 0.72);
}

.modal {
  width: min(780px, 100%);
  max-height: calc(100vh - 36px);
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-soft);
}

.icon-button {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
}

.icon-button:hover {
  background: var(--surface-strong);
  color: #58a6ff;
}

.product-form {
  padding: 22px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.product-form label {
  display: grid;
  gap: 7px;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 850;
}

.form-field-full {
  grid-column: 1 / -1;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
}

.loading-row {
  opacity: 0.75;
}

.app-footer {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

.app-footer::before {
  content: "✦ ";
  color: var(--blue);
}

.app-footer::after {
  content: " ✦";
  color: var(--blue);
}

@media (max-width: 1180px) {
  .dashboard-grid {
    grid-template-columns: repeat(3, minmax(150px, 1fr));
  }

  .content-grid,
  .report-grid {
    grid-template-columns: 1fr;
  }

  .chart-panel {
    position: static;
  }
}

@media (max-width: 820px) {
  .app-shell {
    padding: 18px;
  }

  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-area {
    align-items: flex-start;
  }

  .brand-logo-wrap {
    width: 62px;
    height: 62px;
    border-radius: 16px;
  }

  .header-actions {
    width: 100%;
  }

  .header-actions .btn {
    flex: 1;
  }

  .status-bar {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .panel-header,
  .report-header {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    width: 100%;
  }

  .report-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .report-controls input,
  .report-controls button {
    width: 100%;
  }

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

  .modal-actions {
    flex-direction: column-reverse;
  }

  .modal-actions .btn {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .brand-area {
    flex-direction: column;
  }

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

  .dashboard-card {
    min-height: auto;
  }

  .dashboard-card strong {
    font-size: 1.7rem;
  }

  .header-actions {
    flex-direction: column;
  }

  .header-actions .btn {
    width: 100%;
  }
}