:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #667085;
  --line: #d9e0ea;
  --brand: #2563eb;
  --green: #059669;
  --amber: #b45309;
  --red: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

.shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: #111827;
  color: #fff;
}

h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
}

.subhead {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

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

.btn {
  min-height: 40px;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.btn.primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.stat span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.stat strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  line-height: 1;
}

.section {
  margin-top: 24px;
}

.section-title {
  margin: 0 0 12px;
  font-size: 15px;
  color: #344054;
  text-transform: uppercase;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.tile {
  min-height: 112px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.tile:hover {
  border-color: #94a3b8;
  transform: translateY(-2px);
}

.tile-icon {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand);
}

.tile.green .tile-icon {
  background: var(--green);
}

.tile.amber .tile-icon {
  background: var(--amber);
}

.tile.red .tile-icon {
  background: var(--red);
}

.tile-title {
  margin-top: 14px;
  font-size: 15px;
  font-weight: 800;
}

.tile-path {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.messages {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.message {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: #1e3a8a;
  font-weight: 700;
}

.message.success {
  background: #ecfdf5;
  border-color: #bbf7d0;
  color: #166534;
}

.message.error {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

.warehouse-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.warehouse-panel label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.warehouse-panel select {
  min-width: 260px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0 10px;
  color: var(--ink);
  background: #fff;
  font-weight: 700;
}

.selected-note {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 920px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .shell {
    padding: 22px 14px 32px;
  }

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

  .top-actions {
    justify-content: stretch;
  }

  .warehouse-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .warehouse-panel select {
    min-width: 0;
    width: 100%;
  }

  .btn {
    flex: 1;
  }

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