/* =====================================================================
   Giao diện quản lý khách sạn
   Bảng màu: mực đêm (navy) + đồng thau (brass) trên nền xám lạnh
   Điểm nhấn: sơ đồ phòng dạng "bảng chìa khóa lễ tân"
   ===================================================================== */

:root{
  --muc:#14263C;
  --muc-2:#1E3550;
  --muc-nhat:#33506F;
  --dong:#C08A2E;
  --dong-nhat:#E8D2A4;
  --nen:#EEF1F5;
  --trang:#FFFFFF;
  --vien:#DCE2EA;
  --chu:#22303F;
  --chu-mo:#6B7A8C;

  --tt-trong:#1E7F5C;
  --tt-dango:#14263C;
  --tt-datruoc:#C08A2E;
  --tt-dondep:#7A6FA8;
  --tt-baotri:#8E99A5;

  --bk:10px;
  --bong:0 1px 2px rgba(20,38,60,.06), 0 8px 24px rgba(20,38,60,.06);
}

*{box-sizing:border-box}
body{
  margin:0;
  background:var(--nen);
  color:var(--chu);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:14.5px;
  line-height:1.55;
}
a{color:var(--muc-nhat);text-decoration:none}
a:hover{color:var(--dong)}
.so{font-variant-numeric:tabular-nums}

/* ---------- Bố cục ---------- */
.khung{display:flex;min-height:100vh}
.canh{
  width:250px;flex:0 0 250px;
  background:var(--muc);
  color:#C9D4E1;
  position:sticky;top:0;height:100vh;
  display:flex;flex-direction:column;
}
.than{flex:1;min-width:0;display:flex;flex-direction:column}

.hieu{
  padding:22px 20px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.hieu b{
  display:block;
  font-family:'Playfair Display',Georgia,serif;
  font-size:20px;letter-spacing:.02em;color:#fff;line-height:1.2;
}
.hieu span{
  display:block;margin-top:4px;
  font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--dong);
}

.dieuhuong{padding:12px 10px;overflow-y:auto;flex:1}
.dieuhuong .nhom{
  font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:#66788E;padding:14px 12px 6px;
}
.dieuhuong a{
  display:flex;align-items:center;gap:11px;
  padding:9px 12px;margin-bottom:2px;border-radius:8px;
  color:#C9D4E1;font-size:14px;
  transition:background .15s,color .15s;
}
.dieuhuong a i{font-size:16px;width:18px;text-align:center;color:#8FA3BA}
.dieuhuong a:hover{background:rgba(255,255,255,.06);color:#fff}
.dieuhuong a.chon{background:var(--muc-2);color:#fff;box-shadow:inset 3px 0 0 var(--dong)}
.dieuhuong a.chon i{color:var(--dong)}

.chan-canh{
  padding:12px 16px;border-top:1px solid rgba(255,255,255,.08);
  font-size:12px;color:#66788E;
}

/* ---------- Thanh trên ---------- */
.thanh-tren{
  background:var(--trang);border-bottom:1px solid var(--vien);
  padding:14px 26px;display:flex;align-items:center;gap:16px;
  position:sticky;top:0;z-index:20;
}
.thanh-tren h1{
  margin:0;font-size:19px;font-weight:600;letter-spacing:-.01em;
}
.thanh-tren .phu{font-size:12.5px;color:var(--chu-mo);margin-top:1px}
.nguoi{margin-left:auto;display:flex;align-items:center;gap:12px}
.anh-dai-dien{
  width:36px;height:36px;border-radius:50%;
  background:var(--muc);color:var(--dong-nhat);
  display:grid;place-items:center;font-weight:600;font-size:14px;
}
.noi-dung{padding:24px 26px 60px;flex:1}

/* ---------- Thẻ ---------- */
.the{
  background:var(--trang);border:1px solid var(--vien);
  border-radius:var(--bk);box-shadow:var(--bong);
}
.the-dau{
  padding:14px 18px;border-bottom:1px solid var(--vien);
  display:flex;align-items:center;gap:12px;
}
.the-dau h2{margin:0;font-size:15px;font-weight:600}
.the-than{padding:18px}

/* ---------- Ô chỉ số ---------- */
.chi-so{
  background:var(--trang);border:1px solid var(--vien);border-radius:var(--bk);
  padding:16px 18px;box-shadow:var(--bong);position:relative;overflow:hidden;
}
.chi-so::after{
  content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--dong);
}
.chi-so .nhan{font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--chu-mo)}
.chi-so .gia-tri{
  font-family:'Playfair Display',Georgia,serif;
  font-size:30px;font-weight:700;line-height:1.15;margin-top:4px;color:var(--muc);
}
.chi-so .ghi{font-size:12.5px;color:var(--chu-mo)}

/* ---------- BẢNG CHÌA KHÓA LỄ TÂN (sơ đồ phòng) ---------- */
.gia-khoa{
  display:grid;gap:14px;
  grid-template-columns:repeat(auto-fill,minmax(148px,1fr));
}
.the-khoa{
  position:relative;display:block;
  background:var(--trang);border:1px solid var(--vien);
  border-radius:6px 6px 12px 12px;
  padding:26px 12px 12px;text-align:center;
  box-shadow:var(--bong);
  transition:transform .16s ease,box-shadow .16s ease;
  color:inherit;
}
.the-khoa::before{ /* lỗ treo chìa khóa */
  content:'';position:absolute;top:9px;left:50%;transform:translateX(-50%);
  width:16px;height:16px;border-radius:50%;
  background:var(--nen);border:1px solid var(--vien);
}
.the-khoa::after{ /* dải màu trạng thái dưới đáy thẻ */
  content:'';position:absolute;left:0;right:0;bottom:0;height:5px;
  border-radius:0 0 11px 11px;background:var(--tt-baotri);
}
.the-khoa:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(20,38,60,.14)}
.the-khoa .sp{
  font-family:'Playfair Display',Georgia,serif;
  font-size:30px;font-weight:700;color:var(--muc);line-height:1;
}
.the-khoa .loai{font-size:11.5px;color:var(--chu-mo);margin-top:5px;min-height:30px}
.the-khoa .tt{
  display:inline-block;margin-top:7px;font-size:11px;font-weight:600;
  letter-spacing:.04em;padding:2px 10px;border-radius:99px;
}
.the-khoa .khach{
  font-size:11.5px;color:var(--muc-nhat);margin-top:6px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.k-trong::after{background:var(--tt-trong)}
.k-trong .tt{background:rgba(30,127,92,.12);color:var(--tt-trong)}
.k-dango::after{background:var(--tt-dango)}
.k-dango .tt{background:rgba(20,38,60,.10);color:var(--tt-dango)}
.k-dango{border-color:#C3CEDC;background:linear-gradient(180deg,#fff 0%,#F7F9FC 100%)}
.k-datruoc::after{background:var(--tt-datruoc)}
.k-datruoc .tt{background:rgba(192,138,46,.14);color:#8F6516}
.k-dondep::after{background:var(--tt-dondep)}
.k-dondep .tt{background:rgba(122,111,168,.14);color:var(--tt-dondep)}
.k-baotri::after{background:var(--tt-baotri)}
.k-baotri .tt{background:rgba(142,153,165,.16);color:#5D6874}
.k-baotri .sp{color:var(--chu-mo)}

/* Thẻ phòng đang được chọn khi nhận đặt phòng */
.k-chon{
  border-color:var(--tt-trong);
  background:linear-gradient(180deg,#F2FBF7 0%,#E6F6EF 100%);
  box-shadow:0 0 0 2px rgba(30,127,92,.35), 0 8px 20px rgba(30,127,92,.16);
}
.k-chon::after{background:var(--tt-trong)}
.k-chon .sp{color:#14603F}
.k-chon .tt{background:var(--tt-trong);color:#fff}
.k-chon .dau-tich{
  position:absolute;top:8px;right:8px;width:20px;height:20px;border-radius:50%;
  background:var(--tt-trong);color:#fff;display:grid;place-items:center;font-size:12px;
}
.the-khoa .dau-tich{display:none}
.o-gia-phong{
  width:100%;margin-top:7px;padding:4px 6px;font-size:13px;text-align:center;
  border:1px solid var(--vien);border-radius:6px;font-variant-numeric:tabular-nums;
  background:#fff;
}
.o-gia-phong:focus{border-color:var(--tt-trong);outline:none;box-shadow:0 0 0 3px rgba(30,127,92,.15)}
.gia-goc{font-size:11px;color:#8F6516;margin-top:3px}

.chu-thich{display:flex;flex-wrap:wrap;gap:16px;font-size:12.5px;color:var(--chu-mo)}
.chu-thich span{display:flex;align-items:center;gap:6px}
.cham{width:10px;height:10px;border-radius:3px;display:inline-block}

/* ---------- Bảng dữ liệu ---------- */
table.bang{width:100%;border-collapse:collapse;font-size:14px}
table.bang th{
  text-align:left;font-size:11.5px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--chu-mo);font-weight:600;
  padding:10px 12px;border-bottom:1px solid var(--vien);background:#F7F9FB;
  white-space:nowrap;
}
table.bang td{padding:11px 12px;border-bottom:1px solid #EDF1F5;vertical-align:middle}
table.bang tbody tr:hover{background:#F9FBFD}
table.bang .phai{text-align:right}
.trong-rong{padding:44px 20px;text-align:center;color:var(--chu-mo)}
.trong-rong i{font-size:34px;color:#C3CEDC;display:block;margin-bottom:10px}

/* ---------- Linh tinh ---------- */
.nhan-tt{
  display:inline-block;font-size:11.5px;font-weight:600;
  padding:3px 10px;border-radius:99px;
}
.btn-chinh{background:var(--muc);border-color:var(--muc);color:#fff}
.btn-chinh:hover{background:var(--muc-2);border-color:var(--muc-2);color:#fff}
.btn-dong{background:var(--dong);border-color:var(--dong);color:#fff}
.btn-dong:hover{background:#A9761F;border-color:#A9761F;color:#fff}
.form-label{font-size:13px;font-weight:600;color:var(--chu);margin-bottom:4px}
.form-control,.form-select{border-color:#CFD8E3;font-size:14px}
.form-control:focus,.form-select:focus{
  border-color:var(--muc-nhat);box-shadow:0 0 0 3px rgba(51,80,111,.12);
}
:focus-visible{outline:2px solid var(--dong);outline-offset:2px}
.tien{font-weight:600;font-variant-numeric:tabular-nums}
.tien-lon{font-family:'Playfair Display',Georgia,serif;font-size:26px;font-weight:700;color:var(--muc)}

/* ---------- Đăng nhập ---------- */
.trang-dn{
  min-height:100vh;display:grid;place-items:center;padding:24px;
  background:radial-gradient(1000px 600px at 15% -10%,#25405E 0%,var(--muc) 55%,#0D1B2C 100%);
}
.hop-dn{width:100%;max-width:400px;background:var(--trang);border-radius:14px;padding:34px 32px;
  box-shadow:0 24px 60px rgba(0,0,0,.34)}
.hop-dn h1{font-family:'Playfair Display',Georgia,serif;font-size:25px;margin:0 0 2px;color:var(--muc)}
.hop-dn .phu{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--dong);margin-bottom:22px}

/* ---------- In hóa đơn ---------- */
@media print{
  .canh,.thanh-tren,.khong-in{display:none !important}
  body{background:#fff}
  .noi-dung{padding:0}
  .the{border:none;box-shadow:none}
}

/* ---------- Màn hình nhỏ ---------- */
@media (max-width:992px){
  .canh{position:fixed;left:-250px;z-index:1050;transition:left .22s}
  .canh.mo{left:0}
  .phu-mo{position:fixed;inset:0;background:rgba(10,20,32,.5);z-index:1040;display:none}
  .phu-mo.hien{display:block}
  .noi-dung,.thanh-tren{padding-left:16px;padding-right:16px}
}
@media (min-width:993px){.nut-menu{display:none}}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* ---------- Ô nhập ngày kiểu Việt Nam ---------- */
.boc-ngay-vn{position:relative;display:block}
.boc-ngay-vn > input[type="date"]{
  position:absolute;left:0;bottom:0;width:1px;height:1px;
  opacity:0;border:0;padding:0;margin:0;pointer-events:none;
}
.boc-ngay-vn > input[type="text"]{padding-right:34px;width:100%}
.nut-lich{
  position:absolute;top:50%;right:4px;transform:translateY(-50%);
  width:28px;height:28px;border:0;background:transparent;color:var(--chu-mo);
  border-radius:6px;cursor:pointer;display:grid;place-items:center;font-size:15px;
}
.nut-lich:hover{background:#EEF1F5;color:var(--muc)}