:root {
  --blue-dark: #0C447C;
  --blue: #185FA5;
  --blue-bg: #EFF6FF;
  --blue-border: #BFDBFE;
  --green: #16A34A;
  --green-bg: #DCFCE7;
  --red: #DC2626;
  --red-bg: #FEE2E2;
  --red-border: #FECACA;
  --text: #1F2937;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --bg: #F1F5F9;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text);
}
.topbar {
  background: var(--blue-dark); color: #fff; padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.topbar h1 { font-size: 17px; margin: 0; }
.topbar .sub { font-size: 12px; opacity: .8; }
.container { max-width: 760px; margin: 0 auto; padding: 20px 16px 60px; }
.card {
  background: #fff; border-radius: 14px; padding: 18px; margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06); border: 1px solid var(--border);
}
.btn {
  border: none; border-radius: 9px; padding: 9px 16px; font-size: 14px; font-weight: 600;
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-green { background: var(--green); color: #fff; }
.btn-red { background: var(--red); color: #fff; }
.btn-outline { background: #fff; border: 1px solid var(--border); color: var(--text); }
.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.form-input, .form-select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #fff; color: var(--text);
}
.form-label { font-size: 12px; font-weight: 600; color: var(--text-muted); display: block; margin-bottom: 4px; }
.stock-table { width: 100%; border-collapse: collapse; }
.stock-table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .4px;
  color: var(--text-muted); padding: 8px 6px; border-bottom: 2px solid var(--border);
}
.stock-table td { padding: 10px 6px; border-bottom: 1px solid var(--border); font-size: 14px; vertical-align: middle; }
.stock-badge {
  font-weight: 700; padding: 3px 10px; border-radius: 20px; font-size: 13px; display: inline-block;
}
.stock-ok { background: var(--green-bg); color: var(--green); }
.stock-low { background: var(--red-bg); color: var(--red); }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.empty-state { text-align: center; padding: 30px 10px; color: var(--text-muted); font-size: 13px; }
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5);
  align-items: center; justify-content: center; z-index: 1000; padding: 16px;
}
.modal-overlay.show { display: flex; }
.modal-box {
  background: #fff; border-radius: 14px; padding: 22px; width: 100%; max-width: 340px;
  box-shadow: 0 8px 32px rgba(0,0,0,.25);
}
.modal-title { font-size: 16px; font-weight: 800; margin-bottom: 14px; }
.field { margin-bottom: 12px; }
.type-toggle { display: flex; gap: 8px; margin-bottom: 12px; }
.type-btn {
  flex: 1; padding: 10px; border-radius: 9px; border: 1.5px solid var(--border);
  background: #fff; font-weight: 700; cursor: pointer; font-size: 14px; text-align: center;
}
.type-btn.active-in { border-color: var(--green); background: var(--green-bg); color: var(--green); }
.type-btn.active-out { border-color: var(--red); background: var(--red-bg); color: var(--red); }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: #1F2937; color: #fff; padding: 10px 20px; border-radius: 9px; font-size: 13px;
  opacity: 0; transition: all .25s; pointer-events: none; z-index: 2000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--red); }
.toast.success { background: var(--green); }
.history-item {
  display: flex; justify-content: space-between; align-items: center; padding: 8px 0;
  border-bottom: 1px solid var(--border); font-size: 13px;
}
.history-item:last-child { border-bottom: none; }
.error-box {
  display: none; background: var(--red-bg); border: 1px solid var(--red-border); color: var(--red);
  padding: 8px 12px; border-radius: 8px; font-size: 12.5px; margin-bottom: 12px;
}