* { box-sizing: border-box; margin: 0; font-family: -apple-system, "Segoe UI", Roboto, sans-serif; }
:root { --brand: #6b1720; --bg: #faf7f5; --line: #e5ddd8; --muted: #8a7f7a; }
body { background: var(--bg); color: #26201d; }
.hidden { display: none !important; }
.screen { max-width: 480px; margin: 0 auto; padding: 16px; }
.muted { color: var(--muted); font-size: 14px; }
.error { color: #b00020; font-size: 14px; margin-top: 6px; }

/* PIN */
#pin-screen { text-align: center; padding-top: 18vh; }
#pin-screen p { margin: 12px 0 8px; }
#pin-input { font-size: 32px; letter-spacing: 12px; text-align: center; width: 180px;
  padding: 10px; border: 2px solid var(--line); border-radius: 12px; }

/* Header + search */
header { display: flex; align-items: center; justify-content: space-between; padding: 4px 0 12px; }
header h1 { font-size: 20px; color: var(--brand); }
#refresh-btn { font-size: 20px; background: none; border: 1px solid var(--line);
  border-radius: 10px; padding: 4px 12px; }
#search { width: 100%; padding: 12px 14px; font-size: 16px; border: 1px solid var(--line);
  border-radius: 12px; margin-bottom: 12px; background: #fff; }

/* Inventory list */
.cat-header { margin: 18px 0 6px; font-size: 13px; text-transform: uppercase;
  letter-spacing: 1px; color: var(--brand); font-weight: 700; }
.item-row { display: flex; justify-content: space-between; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 8px; cursor: pointer; }
.item-row .name { font-weight: 600; }
.item-row .sub { font-size: 12px; color: var(--muted); }
.item-row .bal { font-size: 18px; font-weight: 700; }
.item-row .bal.zero { color: var(--muted); font-weight: 400; }

/* Buttons */
.big-btn { display: block; width: 100%; padding: 14px; margin-top: 16px; font-size: 17px;
  font-weight: 600; color: #fff; background: var(--brand); border: none; border-radius: 14px; }
.ghost { width: 100%; padding: 14px; margin-top: 16px; font-size: 17px;
  background: none; border: 1px solid var(--line); border-radius: 14px; }
.row { display: flex; gap: 10px; }
#status { padding: 10px 14px; border-radius: 10px; margin-bottom: 10px; font-size: 15px; }
#status.ok { background: #e6f4ea; color: #1e7b34; }
#status.bad { background: #fdecea; color: #b00020; }

/* Modals */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45);
  display: flex; align-items: flex-end; z-index: 10; }
.modal-box { background: #fff; width: 100%; max-width: 480px; margin: 0 auto;
  border-radius: 18px 18px 0 0; padding: 20px 16px calc(20px + env(safe-area-inset-bottom)); }
.modal-box h2 { color: var(--brand); margin-bottom: 4px; }
.modal-box label { display: block; margin: 14px 0 6px; font-size: 14px; font-weight: 600; }
.modal-box input { width: 100%; padding: 12px 14px; font-size: 17px;
  border: 1px solid var(--line); border-radius: 12px; }

/* Segmented buttons */
.seg { display: flex; gap: 8px; margin-top: 6px; }
.seg.wrap { flex-wrap: wrap; }
.seg button { flex: 1; min-width: 90px; padding: 12px 8px; font-size: 15px; font-weight: 600;
  border: 1px solid var(--line); background: #fff; border-radius: 12px; }
.seg button.active { background: var(--brand); color: #fff; border-color: var(--brand); }