:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1c2733;
  --muted: #6b7885;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --ok: #16a34a;
  --warn: #dc2626;
  --border: #e2e8f0;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
}
.hidden { display: none !important; }

#login-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-box {
  background: var(--card);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  width: 100%;
  max-width: 360px;
}
.login-box h1 { text-align: center; margin: 0 0 20px; font-size: 24px; }
.login-box small { color: var(--muted); font-weight: 500; font-size: 14px; }

#app-view { max-width: 1000px; margin: 0 auto; padding: 0 12px 60px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 4px; position: sticky; top: 0; background: var(--bg); z-index: 5;
}
.badge {
  display: inline-block; margin-left: 8px; padding: 2px 8px; border-radius: 999px;
  background: #e0e7ff; color: var(--primary-dark); font-size: 12px; font-weight: 600;
  text-transform: capitalize;
}
.tabs { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.tab {
  border: none; background: #e7ebf0; color: var(--ink); padding: 10px 16px;
  border-radius: 999px; font-size: 15px; cursor: pointer;
}
.tab.active { background: var(--primary); color: #fff; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
}
.card h2 { margin: 0 0 14px; font-size: 18px; }

label { display: block; margin-bottom: 12px; font-size: 14px; color: var(--muted); }
input, select {
  width: 100%; margin-top: 4px; padding: 12px; font-size: 16px;
  border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--ink);
}
.row { display: flex; gap: 12px; }
.row.wrap { flex-wrap: wrap; align-items: flex-end; }
.row.wrap label { flex: 1 1 140px; margin-bottom: 0; }
.grow { flex: 1; }
.checkbox { display: flex; align-items: center; gap: 10px; }
.checkbox input { width: auto; margin: 0; }
.big-check { font-size: 17px; color: var(--ink); padding: 6px 0; }
.big-check input { width: 22px; height: 22px; }

button { cursor: pointer; }
.btn-primary {
  background: var(--primary); color: #fff; border: none; padding: 12px 18px;
  border-radius: 8px; font-size: 16px; font-weight: 600;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary.big { width: 100%; padding: 15px; font-size: 18px; margin-top: 6px; }
.btn-ghost {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  padding: 8px 14px; border-radius: 8px;
}
.btn-small { padding: 6px 10px; font-size: 13px; border-radius: 6px; border: 1px solid var(--border); background: #fff; }
.btn-danger { color: var(--warn); border-color: #fecaca; }

.total-hint { font-size: 16px; font-weight: 600; margin: 4px 0 8px; color: var(--primary-dark); min-height: 20px; }
.error { color: var(--warn); font-size: 14px; min-height: 18px; }
.msg { font-size: 14px; min-height: 18px; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--warn); }
.muted { color: var(--muted); font-size: 14px; margin-top: 0; }
.count, .badge-count { color: var(--muted); font-size: 14px; font-weight: 400; }

.banner {
  background: #fef3c7; border: 1px solid #fcd34d; color: #92400e;
  padding: 12px 16px; border-radius: var(--radius); margin-bottom: 14px; font-weight: 600;
}
input.mini { margin-top: 0; padding: 6px 8px; font-size: 14px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
.pill { padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill.ok { background: #dcfce7; color: var(--ok); }
.pill.no { background: #fee2e2; color: var(--warn); }
.stock-low { color: var(--warn); font-weight: 700; }

@media (max-width: 560px) {
  .row { flex-direction: column; gap: 0; }
  .row.wrap { flex-direction: row; }
}