/* Trợ lý AI Kho – Bãi · CSS dùng chung (đăng nhập, ứng dụng chính, kho tài liệu, ngoại tuyến). Ưu tiên điện thoại. */
:root {
  --navy: #1f3a5f; --navy-nhat: #e8eef6; --chu: #1f2a37; --phu: #64748b; --vien: #cbd5e1; --nen: #f1f5f9; --trang: #fff;
  --xanh: #15803d; --xanh-nhat: #dcfce7; --do: #b91c1c; --do-nhat: #fee2e2; --vang: #92400e; --vang-nhat: #fef3c7; --vang-vien: #f59e0b;
  --bo: 12px; --bong: 0 2px 12px rgba(0,0,0,.08);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--nen); color: var(--chu); margin: 0; line-height: 1.5; }
a { color: var(--navy); }
.an { display: none !important; }
.phu { color: var(--phu); font-size: .85rem; }
h1 { font-size: 1.25rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }

/* ---------- Thành phần chung ---------- */
.the { background: var(--trang); border-radius: var(--bo); box-shadow: var(--bong); padding: 18px; margin-bottom: 14px; }
label { display: block; font-size: .85rem; margin: 0 0 4px; color: #334155; }
input, select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--vien); border-radius: 8px; font: inherit; font-size: 1rem; background: var(--trang); color: inherit; }
input:focus, select:focus, textarea:focus { outline: 2px solid #1f3a5f33; border-color: var(--navy); }
textarea { resize: vertical; min-height: 110px; }
button, .nut { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 16px; border: 0; border-radius: 8px;
  background: var(--navy); color: #fff; font: inherit; font-size: .95rem; cursor: pointer; text-decoration: none; min-height: 42px; }
button:disabled, .nut[aria-disabled="true"] { opacity: .55; cursor: default; }
.nut-phu { background: #e2e8f0; color: var(--chu); }
.nut-do { background: var(--do-nhat); color: #991b1b; }
.nut-nho { padding: 5px 10px; font-size: .8rem; min-height: 32px; }
.hang-nut { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.tb { font-size: .9rem; min-height: 1.2em; }
.tb.loi, .loi { color: var(--do); }
.tb.ok, .ok { color: var(--xanh); }
.hop-loi { background: var(--do-nhat); color: #7f1d1d; border-radius: 10px; padding: 12px 14px; margin: 12px 0; }
.hop-tin { background: var(--navy-nhat); border-radius: 10px; padding: 12px 14px; margin: 12px 0; }
.nhan { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem; white-space: nowrap; background: #e2e8f0; color: #475569; }
.nhan-xanh { background: var(--xanh-nhat); color: #166534; }
.nhan-do { background: var(--do-nhat); color: #991b1b; }
.nhan-vang { background: var(--vang-nhat); color: var(--vang); }
.nhan-tim { background: #e0e7ff; color: #3730a3; }
.nhan-hong { background: #fce7f3; color: #9d174d; }

/* ---------- Trang đăng nhập / ngoại tuyến ---------- */
body.trang-giua { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.the-hep { width: 100%; max-width: 380px; padding: 28px; }
.the-hep h1 { margin-bottom: 4px; }
.the-hep .phu { margin: 0 0 20px; font-size: .9rem; }
.the-hep label { margin-top: 12px; }
.the-hep button { width: 100%; margin-top: 18px; }
.qr { display: block; margin: 12px auto; width: 200px; height: 200px; }
.ma-khoa { font-family: monospace; font-size: .85rem; word-break: break-all; background: #f8fafc; padding: 8px; border-radius: 6px; }
.the-hep ol { padding-left: 18px; font-size: .9rem; color: #334155; }

/* ---------- Khung ứng dụng ---------- */
.dau { background: var(--navy); color: #fff; position: sticky; top: 0; z-index: 10; padding: 10px 16px calc(8px); padding-top: max(10px, env(safe-area-inset-top)); }
.dau-trong { max-width: 960px; margin: 0 auto; }
.thuong-hieu { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.thuong-hieu b { font-size: 1.05rem; }
.thuong-hieu .phu { color: #cbd5e1; font-size: .8rem; }
nav.dieu-huong { display: flex; gap: 6px; overflow-x: auto; margin-top: 8px; padding-bottom: 2px; scrollbar-width: none; }
nav.dieu-huong::-webkit-scrollbar { display: none; }
nav.dieu-huong a, nav.dieu-huong button { flex: none; color: #e2e8f0; background: rgba(255,255,255,.1); border-radius: 999px; padding: 6px 12px;
  font-size: .85rem; text-decoration: none; min-height: 34px; display: inline-flex; align-items: center; }
nav.dieu-huong a.dang-mo { background: #fff; color: var(--navy); font-weight: 600; }
main.khung { max-width: 960px; margin: 0 auto; padding: 14px 12px calc(24px + env(safe-area-inset-bottom)); }
.khung-rong { max-width: 1100px; }

/* ---------- Hỏi ---------- */
.luoi-nut { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 14px; }
@media (min-width: 640px) { .luoi-nut { grid-template-columns: repeat(3, 1fr); } }
.o-nut { flex-direction: column; align-items: flex-start; justify-content: flex-start; text-align: left; background: var(--trang); color: var(--chu);
  border: 2px solid transparent; box-shadow: var(--bong); border-radius: var(--bo); padding: 12px; min-height: 88px; gap: 2px; }
.o-nut .bt { font-size: 1.4rem; line-height: 1; }
.o-nut .ten { font-weight: 600; font-size: .95rem; }
.o-nut .mt { color: var(--phu); font-size: .78rem; line-height: 1.3; display: none; }
@media (min-width: 640px) { .o-nut .mt { display: block; } }
.o-nut.chon { border-color: var(--navy); background: var(--navy-nhat); }
.bo-loc { display: grid; gap: 12px; margin: 12px 0; }
@media (min-width: 640px) { .bo-loc { grid-template-columns: 1fr 1fr; } .bo-loc .rong { grid-column: 1 / -1; } }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { background: #f1f5f9; color: var(--chu); border: 1px solid var(--vien); border-radius: 999px; padding: 6px 12px; font-size: .85rem; min-height: 36px; }
.chip.chon { background: var(--navy); color: #fff; border-color: var(--navy); }
.goi-y { display: flex; flex-direction: column; gap: 6px; margin: 4px 0 12px; }
.goi-y button { justify-content: flex-start; text-align: left; background: #f8fafc; color: var(--navy); border: 1px dashed var(--vien); font-size: .88rem; min-height: 38px; }
.dem { text-align: right; font-size: .78rem; color: var(--phu); margin-top: 4px; }
.dem.vuot { color: var(--do); font-weight: 600; }
.bat-buoc { color: var(--do); }

/* ---------- Tiến trình ---------- */
.tien-trinh { list-style: none; padding: 0; margin: 10px 0 0; }
.tien-trinh li { display: flex; gap: 10px; align-items: baseline; padding: 6px 0; border-bottom: 1px solid #eef2f7; font-size: .95rem; }
.tien-trinh .dau-buoc { width: 1.2em; flex: none; text-align: center; }
.tien-trinh .tg { margin-left: auto; color: var(--phu); font-size: .8rem; white-space: nowrap; }
.tien-trinh li.bo_qua { color: var(--phu); }
.tien-trinh li.loi { color: var(--do); }
.dong-ho { font-variant-numeric: tabular-nums; font-weight: 600; }
.quay { display: inline-block; animation: quay 1.2s linear infinite; }
@keyframes quay { to { transform: rotate(360deg); } }

/* ---------- Kết quả ---------- */
.dau-ket-qua .cau-hoi { font-size: 1.02rem; font-weight: 600; margin: 6px 0; white-space: pre-wrap; word-break: break-word; }
.dau-ket-qua .chips { margin-top: 6px; }
.noi-dung { word-break: break-word; }
.noi-dung h3 { font-size: 1.1rem; margin: 16px 0 8px; } .noi-dung h4 { font-size: 1.02rem; margin: 14px 0 6px; } .noi-dung h5 { font-size: .95rem; margin: 12px 0 6px; }
.noi-dung p { margin: 0 0 10px; }
.noi-dung ul, .noi-dung ol { padding-left: 22px; margin: 0 0 10px; }
.noi-dung li { margin: 3px 0; }
.noi-dung blockquote { margin: 0 0 10px; padding: 8px 12px; border-left: 4px solid var(--vang-vien); background: var(--vang-nhat); border-radius: 0 8px 8px 0; }
.noi-dung blockquote p { margin: 0; }
.noi-dung hr { border: 0; border-top: 1px solid #e2e8f0; margin: 14px 0; }
.noi-dung code { background: #f1f5f9; padding: 1px 4px; border-radius: 4px; font-size: .9em; }
.bang-cuon, .bang { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 10px; }
.noi-dung table, .bang table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.noi-dung th, .noi-dung td, .bang th, .bang td { text-align: left; padding: 7px 8px; border-bottom: 1px solid #e2e8f0; vertical-align: top; }
.noi-dung th, .bang th { background: #f8fafc; color: #475569; font-weight: 600; white-space: nowrap; }
button.trich { display: inline; min-height: 0; padding: 0 2px; margin: 0 1px; background: none; color: var(--navy); font-size: .82em; font-weight: 600;
  vertical-align: super; line-height: 1; border-radius: 4px; text-decoration: underline dotted; }
button.trich:hover, button.trich:focus { background: var(--navy-nhat); }
.can-kiem-tra { background: var(--vang-nhat); border: 2px solid var(--vang-vien); border-radius: var(--bo); padding: 12px 16px; margin-bottom: 14px; }
.can-kiem-tra h2 { color: var(--vang); margin-bottom: 6px; }
.can-kiem-tra ul { margin: 0; padding-left: 20px; }
.canh-bao { background: var(--do-nhat); color: #7f1d1d; border-radius: var(--bo); padding: 10px 14px; margin-bottom: 14px; font-weight: 600; }
.than-van-ban { border: 1px solid var(--vien); border-radius: 10px; padding: 16px; background: #fffef9; }
.ds-nguon { list-style: none; padding: 0; margin: 0; }
.ds-nguon li { padding: 10px 8px; border-bottom: 1px solid #eef2f7; border-radius: 8px; font-size: .9rem; word-break: break-word; transition: background .6s; }
.ds-nguon .so { font-weight: 700; color: var(--navy); margin-right: 4px; }
.ds-nguon .dong-phu { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 4px; }
.ds-nguon .ghi-chu { color: var(--phu); font-size: .8rem; margin-top: 3px; }
.ds-nguon li.noi-bat { background: #fef9c3; }
.mien-tru { font-style: italic; color: var(--phu); font-size: .88rem; margin-top: 10px; }
details.chi-tiet summary { cursor: pointer; font-weight: 600; font-size: .92rem; }
details.chi-tiet table { margin-top: 8px; }

/* ---------- Lịch sử ---------- */
.loc-lich-su { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.loc-lich-su .rong { grid-column: 1 / -1; }
@media (min-width: 720px) { .loc-lich-su { grid-template-columns: repeat(4, 1fr) auto; align-items: end; } .loc-lich-su .rong { grid-column: auto; } }
.ds-lich-su { list-style: none; padding: 0; margin: 0; }
.ds-lich-su a { display: block; padding: 12px 4px; border-bottom: 1px solid #eef2f7; text-decoration: none; color: inherit; }
.ds-lich-su .hang1 { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: .8rem; color: var(--phu); }
.ds-lich-su .cau { margin-top: 4px; font-size: .95rem; word-break: break-word; }
.phan-trang { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 12px; }

/* ---------- Kho tài liệu ---------- */
.luoi { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px 14px; }
.luoi .rong { grid-column: 1 / -1; }
.hang-tieu-de { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.hang-tieu-de h2 { margin: 0; flex: 1; }
.hang-tieu-de select { width: auto; }
progress { width: 220px; height: 10px; }
td.nho { white-space: nowrap; } td .nut-nho { margin: 0 4px 4px 0; }
.ghi-chu-loi { color: #b45309; font-size: .8rem; margin-top: 4px; }
.an-ngoai { position: fixed; left: -9999px; top: 0; }

/* ---------- M9 · Quản trị ---------- */
.banner { max-width: 960px; margin: 10px auto 0; padding: 10px 14px; border-radius: 10px; font-size: .9rem; font-weight: 600; }
.banner a { margin-left: 6px; }
.banner-vang { background: var(--vang-nhat); color: var(--vang); border: 1px solid var(--vang-vien); }
.banner-do { background: var(--do-nhat); color: #7f1d1d; border: 1px solid #fca5a5; }
@media (max-width: 990px) { .banner { margin: 10px 12px 0; } }
nav.the-muc { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 14px; padding-bottom: 4px; scrollbar-width: thin; }
nav.the-muc a { flex: none; padding: 7px 12px; border-radius: 999px; background: #e2e8f0; color: var(--chu); text-decoration: none; font-size: .85rem; }
nav.the-muc a.dang-mo { background: var(--navy); color: #fff; font-weight: 600; }
.luoi-so { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.o-so .so-lon, .so-lon { font-size: 1.3rem; font-weight: 700; margin: 4px 0; }
.ds-canh-bao { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.ds-canh-bao li { border-radius: 10px; padding: 10px 12px; }
.ds-canh-bao li.loi { background: var(--do-nhat); color: #7f1d1d; }
.ds-canh-bao li.canh-bao-vang { background: var(--vang-nhat); color: var(--vang); }
.ds-the { list-style: none; padding: 0; margin: 0; }
.ds-the > li { padding: 12px 4px; border-bottom: 1px solid #eef2f7; display: grid; gap: 6px; }
.ds-the .hang1 { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.hang-nut-nho { margin-top: 4px; gap: 6px; }
.hang-nut-nho select { width: auto; padding: 5px 8px; font-size: .85rem; }
.trich-ngan { font-size: .88rem; white-space: pre-wrap; word-break: break-word; color: #334155; }
.chon-nho { display: inline-flex; align-items: center; gap: 4px; font-size: .9rem; margin-right: 10px; }
.chon-nho input { width: auto; }
textarea.json, .json-nho { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .8rem; }
.json-nho { margin: 0; white-space: pre-wrap; word-break: break-word; max-width: 420px; max-height: 160px; overflow: auto; background: #f8fafc; padding: 4px 6px; border-radius: 6px; }
details.the-nut > summary { cursor: pointer; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
details.the-nut[open] > summary { margin-bottom: 12px; }
.khu-goi-y { margin-top: 14px; border-top: 1px solid #eef2f7; padding-top: 10px; }
.khu-goi-y h3 { font-size: .95rem; margin: 0 0 8px; }
.ds-goi-y { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 6px; }
.hang-goi-y { display: flex; gap: 6px; align-items: center; }
.hang-goi-y input:not([type="checkbox"]) { flex: 1; }
.the-noi { border: 2px solid var(--navy); }
.bang-mo-hinh input, .bang-mo-hinh select { min-width: 90px; padding: 6px 8px; font-size: .85rem; }
.bang-mo-hinh td:nth-child(2) input, .bang-mo-hinh td:nth-child(3) input { min-width: 210px; }
.bieu-do { width: 100%; height: auto; display: block; }
.bieu-do .cot-bd { fill: var(--navy); }
.bieu-do .luoi-bd { stroke: #e2e8f0; stroke-width: 1; }
.bieu-do .chu-bd { fill: var(--phu); font-size: 11px; }
.thanh-chi-phi { width: 100%; height: 12px; }
.vien-vang { border: 2px solid var(--vang-vien); }
.vien-do { border: 2px solid #f87171; }
dialog.hop-thoai { border: 0; border-radius: var(--bo); box-shadow: 0 10px 40px rgba(0,0,0,.25); padding: 20px; width: min(440px, calc(100vw - 32px)); }
dialog.hop-thoai::backdrop { background: rgba(15, 23, 42, .5); }
dialog.hop-thoai label { margin-top: 10px; }
.nut-do-dam { background: #b91c1c; color: #fff; }