:root{
  --side:#1f2b3e;--side-hover:#2a3950;--brand:#1890ff;--brand-dark:#0b6fcc;--bg:#f0f2f5;--card:#fff;--line:#e5e8ee;
  --fg:#1f2937;--muted:#6b7280;--green:#16a34a;--red:#dc2626;--orange:#ea8a00;--purple:#7c3aed;--radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;font-family:"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:14px;color:var(--fg);background:var(--bg)}
a{color:var(--brand);text-decoration:none;cursor:pointer}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{margin:0}
.hide{display:none!important}
.muted{color:var(--muted)}.small{font-size:12px}.b{font-weight:600}.right{text-align:right}.center{text-align:center}
.green{color:var(--green)}.red{color:var(--red)}.orange{color:var(--orange)}.brand{color:var(--brand)}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.grow{flex:1}.col{display:flex;flex-direction:column;gap:8px}
.mt{margin-top:12px}.mb{margin-bottom:12px}.gap{gap:12px}

/* layout */
#app{display:flex;min-height:100vh}
.sidebar{width:210px;background:var(--side);color:#cfd8e6;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0}
.sidebar .logo{padding:16px 18px;font-weight:700;color:#fff;font-size:16px;letter-spacing:.5px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar .logo span{color:#5bd1ff}
.sidebar nav{flex:1;overflow:auto;padding:6px 0}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:10px 18px;color:#cfd8e6;font-size:13.5px}
.sidebar nav a:hover{background:var(--side-hover);color:#fff}
.sidebar nav a.active{background:var(--brand);color:#fff}
.sidebar nav a .ic{width:18px;text-align:center;opacity:.9}
.sidebar nav .logout-m{display:none}
.sidebar .user{padding:12px 18px;border-top:1px solid rgba(255,255,255,.08);font-size:12px}
.sidebar .user b{display:block;color:#fff;font-size:13px}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:0 16px;height:52px;display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:5}
.topbar h1{font-size:16px;font-weight:600}
.content{padding:16px;flex:1}

/* cards, tables */
.card{background:var(--card);border-radius:var(--radius);border:1px solid var(--line);padding:14px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.stat .lbl{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.stat .val{font-size:22px;font-weight:700;margin-top:4px}
.stat .sub{font-size:12px;color:var(--muted);margin-top:2px}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:12px;color:var(--muted);font-weight:600;background:#fafbfc;white-space:nowrap}
tr:hover td{background:#f7f9fc}
td.num,th.num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
.tablewrap{overflow:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.tablewrap table{border:0}
.empty{padding:30px;text-align:center;color:var(--muted)}

/* forms */
.btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;font-size:13px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;color:var(--fg)}
.btn:hover{border-color:#c9d0da;background:#fafbfc}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.primary:hover{background:var(--brand-dark)}
.btn.success{background:var(--green);border-color:var(--green);color:#fff}
.btn.danger{color:var(--red);border-color:#f3c2c2}.btn.danger:hover{background:#fff3f3}
.btn.ghost{border-color:transparent;background:transparent}
.btn.sm{padding:4px 8px;font-size:12px}.btn.lg{padding:10px 18px;font-size:15px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.inp,select.inp,textarea.inp{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:#fff;outline:none;min-width:0;width:100%}
.inp:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(24,144,255,.15)}
.inp.sm{padding:4px 6px;font-size:12px}
.inp.num{text-align:right;font-variant-numeric:tabular-nums}
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:10px}
.field label{font-size:12px;color:var(--muted)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0 12px}
.chip{display:inline-flex;align-items:center;padding:2px 8px;border-radius:99px;font-size:11.5px;font-weight:600;background:#eef2f7;color:#475569}
.chip.green{background:#e6f7ec;color:#15803d}.chip.red{background:#fdecec;color:#b91c1c}.chip.orange{background:#fff4e0;color:#b45309}
.chip.blue{background:#e6f2ff;color:#0b6fcc}.chip.purple{background:#efe9fd;color:#6d28d9}.chip.gray{background:#f1f5f9;color:#64748b}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:12px;overflow:auto}
.tabs a{padding:8px 14px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;font-weight:500}
.tabs a.active{color:var(--brand);border-color:var(--brand)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
.seg a{padding:6px 12px;color:var(--fg);font-size:13px}.seg a.active{background:var(--brand);color:#fff}
.subnav{width:200px;flex-shrink:0}
.subnav a{display:block;padding:8px 12px;border-radius:8px;color:var(--fg)}
.subnav a.active{background:#e6f2ff;color:var(--brand-dark);font-weight:600}
.subnav .h{font-size:11px;text-transform:uppercase;color:var(--muted);padding:10px 12px 4px}

/* modal + toast */
.modal-bg{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50;overflow:auto}
.modal{background:#fff;border-radius:14px;width:100%;max-width:560px;box-shadow:0 20px 60px rgba(0,0,0,.25);animation:pop .15s ease}
.modal.wide{max-width:860px}.modal.narrow{max-width:420px}
.modal .mh{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:15px}
.modal .mb-{padding:16px 18px}
.modal .mf{padding:12px 18px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
@keyframes pop{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}
#toasts{position:fixed;top:14px;right:14px;z-index:100;display:flex;flex-direction:column;gap:8px}
.toast{background:#1f2937;color:#fff;padding:10px 14px;border-radius:10px;font-size:13px;box-shadow:0 8px 24px rgba(0,0,0,.2);animation:pop .15s}
.toast.err{background:var(--red)}.toast.ok{background:var(--green)}

/* login */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1f2b3e,#0b6fcc)}
.login .box{background:#fff;padding:32px;border-radius:16px;width:360px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login h1{font-size:22px;margin-bottom:4px}

/* POS */
.pos{display:flex;gap:12px;height:calc(100vh - 52px - 32px);min-height:560px}
.pos .left{flex:1;min-width:0;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.pos .right{width:380px;flex-shrink:0;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.pos .invtabs{display:flex;gap:4px;padding:8px 8px 0;border-bottom:1px solid var(--line);overflow-x:auto;flex-shrink:0}
.pos .invtabs a{padding:7px 12px;border:1px solid var(--line);border-bottom:0;border-radius:8px 8px 0 0;background:#f7f9fc;color:var(--fg);white-space:nowrap;font-size:13px;display:flex;gap:6px;align-items:center}
.pos .invtabs a.active{background:#fff;color:var(--brand);font-weight:600;border-color:var(--brand)}
.pos .invtabs a .x{color:var(--muted);font-size:11px}
.pos .custbar{padding:10px 12px;display:flex;gap:10px;align-items:center;border-bottom:1px solid var(--line);flex-shrink:0}
.pos .lines{flex:1;overflow:auto}
.pos .lines table th{position:sticky;top:0;z-index:1}
.pos .staffcell{cursor:pointer;color:var(--brand);font-size:12px}
.pos .staffcell.none{color:var(--orange)}
.pos .totals{border-top:1px solid var(--line);padding:10px 14px;display:grid;grid-template-columns:1fr 340px;gap:12px;flex-shrink:0}
.pos .totals .tr{display:flex;justify-content:space-between;align-items:center;padding:3px 0;font-size:13px}
.pos .totals .tr.big{font-size:18px;font-weight:700;border-top:1px dashed var(--line);margin-top:4px;padding-top:8px}
.pos .actions{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--line);flex-shrink:0}
.pos .actions .btn{flex:1;justify-content:center;padding:10px}
.pos .catsearch{padding:8px;border-bottom:1px solid var(--line)}
.pos .cattabs{display:flex;border-bottom:1px solid var(--line)}
.pos .cattabs a{flex:1;text-align:center;padding:8px;color:var(--muted);font-size:13px;border-bottom:2px solid transparent}
.pos .cattabs a.active{color:var(--brand);border-color:var(--brand);font-weight:600}
.pos .catlist{flex:1;overflow:auto}
.pos .cat{border-bottom:1px solid var(--line)}
.pos .cat .ch{padding:9px 12px;font-weight:600;font-size:12.5px;cursor:pointer;display:flex;justify-content:space-between;background:#fafbfc}
.pos .cat .ci{display:flex;justify-content:space-between;padding:8px 12px 8px 20px;cursor:pointer;font-size:13px;border-top:1px solid #f1f3f6}
.pos .cat .ci:hover{background:#eef6ff}
.pos .cat .ci .p{color:var(--muted);font-variant-numeric:tabular-nums}
.pos .rightfoot{display:flex;gap:8px;padding:8px;border-top:1px solid var(--line)}
.pos .rightfoot .btn{flex:1;justify-content:center}

/* misc */
.bars{display:flex;align-items:flex-end;gap:4px;height:140px;padding:8px 0}
.bars .bar{flex:1;background:var(--brand);border-radius:3px 3px 0 0;position:relative;min-width:6px}
.bars .bar:hover{background:var(--brand-dark)}
.bars .bar span{position:absolute;bottom:-18px;left:0;right:0;text-align:center;font-size:9px;color:var(--muted)}
.kv{display:grid;grid-template-columns:140px 1fr;gap:4px 10px;font-size:13px}
.kv div:nth-child(odd){color:var(--muted)}
.receipt{font-family:Arial,sans-serif;font-size:12px;width:280px;margin:0 auto;color:#000}
.receipt h2{text-align:center;font-size:15px;margin:0 0 2px}
.receipt table{width:100%;font-size:12px}
.receipt td{padding:2px 0;border:0}
.receipt .tot{border-top:1px dashed #000;margin-top:6px;padding-top:6px}
.pagination{display:flex;gap:6px;align-items:center;justify-content:flex-end;padding:8px 0}
.cal{display:grid;grid-template-columns:70px repeat(auto-fill,minmax(160px,1fr));border:1px solid var(--line);border-radius:var(--radius);overflow:auto;background:#fff}
.cal .h{padding:8px;background:#fafbfc;border-bottom:1px solid var(--line);font-weight:600;font-size:12px;text-align:center}
.cal .slot{border-bottom:1px solid #f1f3f6;border-right:1px solid #f1f3f6;min-height:36px;padding:3px}
.cal .t{font-size:11px;color:var(--muted);text-align:center;padding-top:8px}
.cal .bk{background:#e6f2ff;border-left:3px solid var(--brand);border-radius:4px;padding:3px 6px;font-size:11.5px;margin-bottom:2px;cursor:pointer;line-height:1.3}
.cal .bk.CONFIRMED{background:#efe9fd;border-color:var(--purple)}.cal .bk.CHECKIN{background:#fff4e0;border-color:var(--orange)}
.cal .bk.CHECKOUT{background:#e6f7ec;border-color:var(--green)}.cal .bk.NOT_COME,.cal .bk.CANCEL{background:#f1f5f9;border-color:#94a3b8;opacity:.6}

@media (max-width:900px){
  #app{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static;flex-direction:row;align-items:center;overflow:auto}
  .sidebar .logo{padding:10px 12px;font-size:14px}.sidebar nav{display:flex;padding:0}.sidebar nav a{padding:10px 12px}.sidebar .user{display:none}.sidebar nav .logout-m{display:flex}
  .pos{flex-direction:column;height:auto}.pos .right{width:100%;height:420px}.pos .totals{grid-template-columns:1fr}
  .grid2,.grid3{grid-template-columns:1fr}.subnav{width:100%}
}
@media print{
  body *{visibility:hidden}
  #printarea,#printarea *{visibility:visible}
  #printarea{position:absolute;left:0;top:0;width:100%}
}

/* ảnh trước / sau */
.thumbs{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.thumb{position:relative;width:88px;height:88px;border-radius:8px;overflow:hidden;border:1px solid var(--line);background:#f1f5f9}
.thumbs.big .thumb{width:150px;height:150px}
.thumb img{width:100%;height:100%;object-fit:cover;cursor:zoom-in;display:block}
.thumb .chip{position:absolute;left:4px;bottom:4px;font-size:10px;padding:1px 6px}
.thumb .del{position:absolute;right:3px;top:2px;background:rgba(0,0,0,.55);color:#fff;border-radius:50%;width:18px;height:18px;font-size:11px;display:flex;align-items:center;justify-content:center}
.thumb .del:hover{background:var(--red)}
.photos{margin-top:4px}

/* ---- giao diện menu giống EasySalon ---- */
.sidebar{width:196px;background:#1f2b3d}
.sidebar .logo{padding:14px 16px;font-size:14px;letter-spacing:2.5px;color:#4fc3d9;font-weight:600;display:flex;align-items:center;gap:6px;border-bottom:0}
.sidebar .logo span{color:#4fc3d9}.sidebar .logo .lg{font-size:18px;color:#5dd4c8;letter-spacing:0}
.sidebar nav a{padding:9px 16px;font-size:13px;color:#d6dde8;gap:10px}
.sidebar nav a .ic{width:16px;height:16px;display:inline-flex;opacity:.95}
.sidebar nav a .ic svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sidebar nav a.active{background:#1890ff;color:#fff}
.sidebar .user{display:flex;align-items:center;gap:10px;padding:12px 14px;border-top:1px solid rgba(255,255,255,.08)}
.sidebar .user b{font-size:12.5px;display:block}.sidebar .user .small{color:#9fb3c8;font-size:11px}
.sidebar .user .out{margin-left:auto;color:#9fb3c8;display:inline-flex}.sidebar .user .out svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6}
.avatar{width:30px;height:30px;border-radius:50%;background:#fff;color:#1f2b3d;font-weight:700;display:inline-flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0}
.avatar.sm{width:22px;height:22px;font-size:11px;background:#1fb5a3;color:#fff;margin-right:8px}
@media (max-width:900px){.sidebar{width:100%}.sidebar nav a{padding:9px 10px}.sidebar nav .logout-m{display:flex}}

/* ---- tùy chỉnh hoa hồng ---- */
.commleft{width:210px;flex-shrink:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;max-height:calc(100vh - 120px);overflow-y:auto}
.commleft .gh{background:#f0f2f5;color:#6b7280;font-size:11px;font-weight:600;padding:8px 12px;letter-spacing:.3px}
.commleft a{display:flex;align-items:center;padding:8px 12px;color:var(--fg);font-size:13px;border-bottom:1px solid #f1f3f6}
.commleft a.active{background:#e6f2ff;color:var(--brand-dark);font-weight:600}
.commcats .cat{background:#fff;border:1px solid var(--line);border-radius:8px;margin-bottom:6px}
.commcats .ch{display:flex;align-items:center;gap:8px;padding:10px 12px;cursor:pointer;font-size:13px}
.commcats .ch .tg{display:inline-block;transition:transform .15s;color:var(--muted)}.commcats .ch.open .tg{transform:rotate(90deg)}
.commcats .ch .gear{color:var(--muted);font-size:15px;padding:0 4px}.commcats .ch .gear:hover{color:var(--brand)}
.commcats .citems{border-top:1px solid var(--line)}

/* ---- Đăng nhập — thương hiệu The One (be / vàng đồng / xanh than) ---- */
.login.theone{display:grid;grid-template-columns:1.1fr 1fr;min-height:100vh;background:#FAF6EF;align-items:stretch;justify-content:stretch}
.login.theone .cover{position:relative;background:#1F2A2D url(cover-theone.jpg) center 20%/cover no-repeat;min-height:100vh}
.login.theone .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(31,42,45,.15) 0%,rgba(31,42,45,.55) 45%,rgba(31,42,45,.92) 100%)}
.login.theone .cover-in{position:absolute;left:0;right:0;bottom:0;padding:44px 48px;color:#fff;z-index:1}
.login.theone .logo{width:64px;height:64px;border-radius:14px;background:#fff;padding:6px;object-fit:contain;box-shadow:0 8px 24px rgba(0,0,0,.35);margin-bottom:18px}
.login.theone .brand{font-family:Georgia,"Times New Roman",serif;font-size:40px;letter-spacing:6px;line-height:1;color:#fff}
.login.theone .brand span{display:block;font-size:14px;letter-spacing:8px;color:#D4B26A;margin-top:8px;font-family:"Segoe UI",sans-serif;font-weight:600}
.login.theone .tag{margin-top:18px;font-size:15px;color:#e9e2d3}
.login.theone ul{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:6px;font-size:13px;color:#cfc6b3}
.login.theone li::before{content:"◆";color:#D4B26A;font-size:9px;margin-right:8px;vertical-align:middle}
.login.theone .side{display:flex;align-items:center;justify-content:center;padding:40px 24px}
.login.theone .box{width:100%;max-width:400px;background:#fff;border:1px solid #EADFCB;border-radius:18px;padding:36px 34px;box-shadow:0 20px 50px rgba(31,42,45,.10)}
.login.theone .eyebrow{font-size:11px;letter-spacing:3px;text-transform:uppercase;color:#9A7A30;font-weight:700}
.login.theone h1{font-family:Georgia,"Times New Roman",serif;font-size:30px;color:#1F2A2D;margin:6px 0 20px;font-weight:600}
.login.theone .field label{color:#6b6357}
.login.theone .inp{border-color:#E3D8C3;padding:10px 12px;border-radius:10px}
.login.theone .inp:focus{border-color:#B8933F;box-shadow:0 0 0 3px rgba(184,147,63,.18)}
.btn.gold{width:100%;justify-content:center;background:linear-gradient(135deg,#B8933F,#D4B26A);border:0;color:#1F2A2D;font-weight:700;letter-spacing:.5px;padding:12px;border-radius:10px;margin-top:6px}
.btn.gold:hover{filter:brightness(1.05)}
.login.theone a{color:#9A7A30}
.login.theone .foot{margin-top:22px;text-align:center;font-size:11px;color:#a89f8f}
@media (max-width:900px){
  .login.theone{grid-template-columns:1fr}
  .login.theone .cover{min-height:240px;background-position:center 25%}
  .login.theone .cover-in{padding:20px 22px}.login.theone .brand{font-size:26px;letter-spacing:4px}.login.theone .logo{width:44px;height:44px;margin-bottom:10px}
  .login.theone ul,.login.theone .tag{display:none}
  .login.theone .side{padding:20px 16px}.login.theone .box{padding:26px 22px;border-radius:14px}
}