* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #f2f4f7; --card: #fff; --text: #1a2233; --muted: #6b7486;
  --primary: #1f6feb; --primary-dark: #1a5fc9;
  --ok: #1a7f37; --alert: #d1242f; --alert-bg: #ffebe9;
  --border: #d8dee6;
}
body { font-family: -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); font-size: 15px; }

header { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: #0d1b2a; color: #fff; }
header h1 { font-size: 1.1rem; }
.header-right { display: flex; gap: 10px; align-items: center; font-size: .85rem; }

nav { display: flex; background: #16283c; overflow-x: auto; }
nav .tab { flex: 1; padding: 11px 8px; background: none; border: none; color: #9fb3c8; font-size: .9rem; cursor: pointer; white-space: nowrap; }
nav .tab.active { color: #fff; border-bottom: 3px solid var(--primary); font-weight: 600; }

main { padding: 14px; max-width: 1100px; margin: 0 auto; }
.hidden { display: none !important; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 14px; }
.card h3 { font-size: .95rem; margin-bottom: 10px; }

.stat-row { display: flex; gap: 10px; }
.stat { flex: 1; text-align: center; }
.stat-num { font-size: 1.7rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: .8rem; }
.alert-bg .stat-num { color: var(--alert); }

.list { display: flex; flex-direction: column; gap: 6px; }
.list-row { display: flex; justify-content: space-between; gap: 8px; padding: 8px 10px; border-radius: 8px; background: #f7f9fb; font-size: .87rem; align-items: center; flex-wrap: wrap; }
.list-row.alert { background: var(--alert-bg); }
.list-row .qty { font-weight: 700; white-space: nowrap; }

.toolbar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.toolbar input[type=search] { flex: 2; min-width: 160px; }
.toolbar select { flex: 1; min-width: 120px; }

input, select { padding: 10px; border: 1px solid var(--border); border-radius: 8px; font-size: .95rem; width: 100%; background:#fff; }
.toolbar input, .toolbar select { width: auto; }

.btn { padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; background: #fff; cursor: pointer; font-size: .9rem; }
.btn:hover { background: #f0f3f7; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.small { padding: 6px 10px; font-size: .8rem; }
.btn.in { background: #1a7f37; border-color: #1a7f37; color: #fff; font-weight: 600; }
.btn.in:hover { background: #156a2e; }
.btn.out { background: #bc4c00; border-color: #bc4c00; color: #fff; font-weight: 600; }
.btn.out:hover { background: #a34200; }
.btn-row { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

.table-wrap { overflow-x: auto; padding: 0; }
table { width: 100%; border-collapse: collapse; font-size: .86rem; }
th, td { padding: 9px 10px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: #f7f9fb; position: sticky; top: 0; font-size: .78rem; text-transform: uppercase; color: var(--muted); }
td.num, th.num { text-align: right; }
tr.alert-row { background: var(--alert-bg); }

.badge { padding: 2px 9px; border-radius: 20px; font-size: .75rem; font-weight: 600; }
.badge.ok { background: #dafbe1; color: var(--ok); }
.badge.alert { background: var(--alert-bg); color: var(--alert); }
.badge.in { background: #dafbe1; color: var(--ok); }
.badge.out { background: #fff1e5; color: #bc4c00; }
.badge.adjust { background: #eceef1; color: var(--muted); }

.overlay { position: fixed; inset: 0; background: rgba(10,20,35,.55); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px; }
.login-card, .modal-card { width: 100%; max-width: 380px; display: flex; flex-direction: column; gap: 10px; }
.login-card h2 { text-align: center; margin-bottom: 6px; }
.error { color: var(--alert); font-size: .85rem; min-height: 1em; }
.muted { color: var(--muted); }
.small-text { font-size: .78rem; }

.seg { display: flex; gap: 6px; }
.seg label { flex: 1; text-align: center; border: 1px solid var(--border); border-radius: 8px; padding: 9px 4px; cursor: pointer; font-size: .85rem; line-height: 1.3; }
.seg input { display: none; }
.seg label:has(input:checked) { border-color: var(--primary); background: #eaf1fd; font-weight: 600; }
.seg small { color: var(--muted); font-weight: 400; font-size: .7rem; }

.field { display: flex; flex-direction: column; gap: 4px; font-size: .78rem; font-weight: 600; color: var(--muted); }
.field input, .field select { font-weight: 400; color: var(--text); }
.hint { background: #f0f6ff; border-left: 3px solid var(--primary); border-radius: 6px; padding: 8px 10px; font-size: .8rem; color: #33415c; }

.preview { background: #f7f9fb; border: 1px solid var(--border); border-radius: 8px; padding: 12px; white-space: pre-wrap; font-size: .82rem; max-height: 320px; overflow: auto; }

.thumb { width: 42px; height: 42px; object-fit: cover; border-radius: 6px; cursor: pointer; display: block; border: 1px solid var(--border); }
.thumb-empty { width: 42px; height: 42px; border-radius: 6px; background: #eef1f5; display: flex; align-items: center; justify-content: center; color: #b8c0cc; font-size: 1.1rem; }
.photo-row { display: flex; align-items: center; gap: 10px; }
.photo-row .btn { margin: 0; }
.photo-preview { width: 76px; height: 76px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); }
.photo-full { max-width: 92vw; max-height: 88vh; border-radius: 10px; box-shadow: 0 8px 30px rgba(0,0,0,.5); }

.summary-row { display: flex; align-items: stretch; gap: 4px; margin-bottom: 12px; flex-wrap: wrap; }
.sum-box { flex: 1; min-width: 86px; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 8px 6px; text-align: center; }
.sum-box .sum-num { font-size: 1.25rem; font-weight: 700; }
.sum-box .sum-label { font-size: .72rem; color: var(--muted); text-transform: uppercase; }
.sum-box.in .sum-num { color: var(--ok); }
.sum-box.out .sum-num { color: #bc4c00; }
.sum-box.balance { border-width: 2px; border-color: var(--primary); }
.sum-box.balance.low { border-color: var(--alert); background: var(--alert-bg); }
.sum-box.balance.low .sum-num { color: var(--alert); }
.sum-op { display: flex; align-items: center; font-size: 1.2rem; font-weight: 700; color: var(--muted); }

.st-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.progress { height: 8px; background: #e6ebf1; border-radius: 6px; overflow: hidden; margin-top: 8px; }
#stProgressBar { height: 100%; background: var(--primary); width: 0; transition: width .3s; }
tr.st-ok { background: #f2fbf4; }
tr.st-var { background: #fff6e6; }
.st-input { width: 90px; padding: 6px 8px; text-align: right; }

#scanVideoWrap { border-radius: 10px; overflow: hidden; background: #000; margin-bottom: 10px; max-width: 420px; }
#scanVideo { width: 100%; display: block; }
.scan-item { display: flex; gap: 14px; align-items: flex-start; }
.scan-photo { width: 96px; height: 96px; object-fit: cover; border-radius: 10px; border: 1px solid var(--border); background: #eef1f5; flex-shrink: 0; }
.scan-info { flex: 1; min-width: 0; }
.scan-info h3 { font-size: 1.1rem; }
.scan-stock { display: flex; gap: 8px; margin-top: 10px; }
.scan-stock .sum-box { flex: 1; }

.clickable { cursor: pointer; }
.clickable:hover { filter: brightness(0.95); }
.filter-chip { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; background: #eaf1fd; border: 1px solid var(--primary); border-radius: 8px; padding: 8px 12px; font-size: .88rem; }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: #1a2233; color: #fff; padding: 10px 18px; border-radius: 10px; font-size: .88rem; z-index: 99; box-shadow: 0 4px 14px rgba(0,0,0,.3); }

@media (max-width: 600px) {
  main { padding: 10px; }
  header h1 { font-size: .92rem; }
  .header-right { font-size: .75rem; }
  .stat-num { font-size: 1.3rem; }
  th, td { padding: 7px 8px; }
}