:root {
  --color-primary: #0f172a;
  --color-on-primary: #ffffff;
  --color-secondary: #334155;
  --color-accent: #0369a1;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-foreground: #020617;
  --color-muted: #e8ecf1;
  --color-border: #e2e8f0;
  --color-danger: #b91c1c;
  --color-warning: #b45309;
  --color-success: #047857;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: "Fira Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(3, 105, 161, 0.35);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 10;
  transform: translateY(-160%);
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 10px 14px;
  border-radius: var(--radius);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
  min-height: 100dvh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100dvh;
  padding: 20px;
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.brand {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.brand-logo {
  display: block;
  width: min(188px, 100%);
  height: auto;
}

.nav-list {
  display: grid;
  gap: 6px;
}

.nav-link {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #cbd5e1;
  text-align: left;
  padding: 10px 12px;
  transition: background 180ms ease, color 180ms ease;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.content {
  min-width: 0;
  padding: 24px;
}

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

.eyebrow {
  margin: 0 0 4px;
  color: #475569;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.1;
}

h2 {
  margin-bottom: 0;
  font-size: 1.08rem;
}

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

.search-field,
input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--color-foreground);
  padding: 10px 12px;
}

textarea {
  resize: vertical;
}

label {
  display: grid;
  gap: 6px;
  color: #334155;
  font-size: 0.92rem;
  font-weight: 600;
}

.btn {
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 700;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, opacity 180ms ease;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-on-primary);
}

.btn-primary:hover {
  background: #075985;
}

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

.btn-secondary:hover {
  border-color: #94a3b8;
}

.btn-danger {
  background: #fee2e2;
  color: var(--color-danger);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.metric-card,
.panel,
.entity-card,
.alert-card,
.route-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.metric-card {
  min-height: 112px;
  padding: 16px;
}

.metric-card span,
.muted {
  color: #64748b;
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  font-family: "Fira Code", monospace;
  font-size: 1.8rem;
  line-height: 1;
}

.split-grid,
.form-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) minmax(0, 1.5fr);
  gap: 16px;
  align-items: start;
}

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

.chart-panel {
  display: flex;
  flex-direction: column;
}

.chart-box {
  position: relative;
  height: 260px;
}

.chart-box canvas {
  max-width: 100%;
}

.panel {
  padding: 16px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border-radius: 999px;
  background: var(--color-muted);
  color: var(--color-secondary);
  padding: 4px 10px;
  font-size: 0.82rem;
  font-weight: 700;
}

.pill.live {
  background: #dcfce7;
  color: var(--color-success);
}

.pill.danger {
  background: #fee2e2;
  color: var(--color-danger);
}

.form-panel {
  display: grid;
  gap: 12px;
}

.inline-fields,
.order-line {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.order-line {
  grid-template-columns: minmax(0, 1fr) 96px auto;
  align-items: end;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border-bottom: 1px solid var(--color-border);
  padding: 11px 10px;
  text-align: left;
  vertical-align: middle;
}

th {
  color: #475569;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

td {
  color: #1e293b;
}

.status,
.stock-status {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 0.78rem;
  font-weight: 700;
}

.status-confirmed,
.status-pending,
.status-dispatched {
  background: #dbeafe;
  color: #1d4ed8;
}

.status-delivered,
.stock-available {
  background: #dcfce7;
  color: var(--color-success);
}

.status-cancelled,
.stock-unavailable {
  background: #fee2e2;
  color: var(--color-danger);
}

.stock-low {
  background: #fef3c7;
  color: var(--color-warning);
}

.entity-list,
.stack-list,
.route-list,
.draft-items,
.bar-list {
  display: grid;
  gap: 10px;
}

.entity-card,
.alert-card,
.route-card {
  padding: 12px;
}

.entity-card h3,
.alert-card h3,
.route-card h3 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.entity-card p,
.alert-card p,
.route-card p {
  margin-bottom: 0;
  color: #475569;
}

.alert-card.unavailable {
  border-left: 4px solid var(--color-danger);
}

.alert-card.low {
  border-left: 4px solid var(--color-warning);
}

.draft-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px;
}

.bar-row {
  display: grid;
  gap: 6px;
}

.bar-row header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: #334155;
  font-weight: 700;
}

.bar-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--color-muted);
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
}

.route-stops {
  margin: 10px 0 0;
  padding-left: 22px;
  color: #334155;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 20;
  max-width: min(420px, calc(100vw - 40px));
  transform: translateY(140%);
  border-radius: var(--radius);
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 12px 14px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.18);
  transition: transform 180ms ease;
}

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

.empty-state {
  margin: 0;
  color: #64748b;
}

@media (max-width: 1024px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .topbar,
  .topbar-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

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

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

@media (max-width: 640px) {
  .content,
  .sidebar {
    padding: 16px;
  }

  .nav-list,
  .metric-grid,
  .inline-fields,
  .order-line {
    grid-template-columns: 1fr;
  }

  .brand {
    justify-content: flex-start;
    margin-bottom: 16px;
  }

  .brand-logo {
    width: min(156px, 70vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}