:root{
  --bg:#f4f5f7; --card:#fff; --ink:#1f2328;
  --muted:#6b7280; --line:#e5e7eb; --primary:#2563eb; --primary-d:#1d4ed8;
  --danger:#cf222e; --radius:10px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:15px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:.2em 0 .5em}
h2,h3{text-transform:uppercase;letter-spacing:.3px}
.glaze-name{text-transform:none;letter-spacing:normal}

/* topbar */
.topbar{display:flex;align-items:center;gap:18px;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px;flex-wrap:wrap}
.brand{font-weight:700;font-size:18px;color:var(--ink);display:flex;align-items:center}
.topbar nav{display:flex;gap:4px;flex-wrap:wrap}
.topbar nav a{padding:6px 12px;border-radius:8px;color:#374151;text-transform:uppercase;letter-spacing:.3px;font-size:13px;font-weight:600}
.topbar nav a:hover{background:#f0f1f3;text-decoration:none}
.topbar nav a.active{background:var(--primary);color:#fff}
.user-box{margin-left:auto;display:flex;align-items:center;gap:10px}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;text-transform:uppercase;flex:0 0 auto}
.user-meta{display:flex;flex-direction:column;line-height:1.3}
.user-meta .uname{font-size:14px;font-weight:600;color:#1f2328;display:flex;align-items:center;gap:6px}
.role-tag{background:#eef2ff;color:#3730a3;border-radius:6px;padding:1px 7px;font-size:11px;text-transform:uppercase;letter-spacing:.3px}
.user-actions{display:flex;align-items:center;gap:7px;font-size:12.5px;margin-top:1px}
.user-actions a,.user-actions .link-btn{color:var(--muted);font-size:12.5px}
.user-actions a:hover,.user-actions .link-btn:hover{color:var(--primary);text-decoration:underline}
.user-actions form{display:inline}
.user-actions .sep{color:#cbd0d8}
.tag{background:#eef2ff;color:#3730a3;border-radius:6px;padding:1px 7px;font-size:12px}
.tag.new{background:#dcfce7;color:#166534}
.tag.readded{background:#dbeafe;color:#1e40af}
.tag.removed{background:#fee2e2;color:#991b1b}
.tag.warn{background:#fef9c3;color:#854d0e}
.delta{font-weight:600;font-size:13px}
.delta.up{color:#166534}
.delta.down{color:#b91c1c}
.delta.zero{color:#9ca3af;font-weight:500}
tr.comp-removed td{color:#9ca3af;text-decoration:line-through}
tr.comp-removed td:last-child{text-decoration:none}

.container{max-width:1280px;margin:22px auto;padding:0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:18px}
.card.narrow{max-width:420px}
.muted{color:var(--muted)}
.small{font-size:13px}
.center{text-align:center}
.nowrap{white-space:nowrap}
.grow{flex:1}
.flash{background:#e9f7ee;color:#13632a;border:1px solid #a6e0b8;padding:10px 14px;border-radius:8px;margin-bottom:16px}
.form-error{background:#fdeef0;color:#86181d;border:1px solid #f5c2c7;padding:9px 12px;border-radius:8px;font-weight:500}

/* form controls */
label{display:block;margin:10px 0;font-weight:600;font-size:14px}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid #cfd4dc;border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input[type=checkbox]{width:auto}
input[type=color]{width:46px;height:38px;padding:2px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.chk{display:inline-flex;align-items:center;gap:6px;font-weight:500;margin:0}
.chk input{margin:0}

/* buttons */
.btn{display:inline-block;background:#eef0f3;color:#1f2328;border:1px solid #d5d9e0;border-radius:8px;padding:8px 14px;font-size:14px;cursor:pointer;font-family:inherit}
.btn:hover{background:#e2e6eb;text-decoration:none}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-d)}
.btn.ghost{background:transparent}
.btn.danger{background:#fff;border-color:#f1b0b7;color:var(--danger)}
.btn.danger:hover{background:#fff0f1}
.btn.small{padding:5px 10px;font-size:13px}
.link-btn{background:none;border:none;color:var(--primary);cursor:pointer;padding:0;font-size:14px}
.link-btn.danger{color:var(--danger)}

/* login */
.login-wrap{min-height:70vh;display:flex;align-items:center;justify-content:center}
.login-card{width:340px;text-align:center}
.login-card .btn{width:100%;margin-top:8px}
.login-card label{text-align:left}

/* filters */
.filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.filters > input,.filters > select{height:40px;flex:1 1 150px;min-width:130px;max-width:220px}
.filters input[name=q]{flex:2 1 220px;max-width:none}
.filter-actions{display:flex;gap:8px;margin-left:auto;flex:0 0 auto}

/* grid danh sách */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}
.tile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:inherit;display:flex;flex-direction:column}
.tile:hover{box-shadow:0 4px 14px rgba(0,0,0,.08);text-decoration:none}
.tile.kind-men{border-top:3px solid #1f2328}
.tile.kind-ve{border-top:3px solid #d11f2a}
.thumb{position:relative;aspect-ratio:1/1;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:cover}
.no-img{color:#9aa1ab;font-size:13px}
.tile-body{padding:12px 14px}
.tile-title{font-weight:600;font-size:15px}
.badge{display:inline-block;color:#fff;border-radius:6px;padding:2px 9px;font-size:12px}
.badge.neutral{background:#eef0f3;color:#374151}
.badge.temp{background:#fdf0e3;color:#9a5b00}
.badge.kind{background:#ede9fe;color:#5b21b6}
.badge.kind.men{background:#ccfbf1;color:#0f766e}
.badge.kind.ve{background:#fce7f3;color:#be185d}
.badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.kv .badge{margin:0}

/* tile wrap + phien ban */
.tile-wrap{position:relative}
.tile-wrap.stack::before,.tile-wrap.stack::after{content:"";position:absolute;left:0;top:0;right:0;bottom:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);z-index:-1}
.tile-wrap.stack::before{transform:translate(5px,5px)}
.tile-wrap.stack::after{transform:translate(10px,10px)}
.add-ver{position:absolute;top:8px;right:8px;margin:0}
.add-ver button{width:30px;height:30px;border-radius:8px;border:none;background:var(--primary);color:#fff;font-size:20px;line-height:1;cursor:pointer;box-shadow:0 1px 5px rgba(0,0,0,.3);display:flex;align-items:center;justify-content:center}
.add-ver button:hover{background:var(--primary-d)}
.ver-count{position:absolute;left:8px;top:8px;background:rgba(31,35,40,.78);color:#fff;font-size:11px;padding:2px 9px;border-radius:20px}
.version-list{display:flex;flex-wrap:wrap;gap:8px}
.ver-chip{display:inline-block;padding:7px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:#1f2328;font-size:13px;font-weight:500}
.ver-chip:hover{text-decoration:none;box-shadow:0 2px 6px rgba(0,0,0,.12)}
.ver-chip.current{outline:2px solid var(--primary);outline-offset:1px}
.ver-chip.add{background:#eef0f3;color:#374151;cursor:pointer;font-family:inherit}

/* filter options (cau hinh) */
.filter-opts{display:grid;grid-template-columns:repeat(2,minmax(200px,1fr));gap:10px}
.filter-opts .opt{display:flex;align-items:center;gap:10px;margin:0;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-weight:500;cursor:pointer;background:#fff}
.filter-opts .opt:hover{border-color:var(--primary)}
.filter-opts .opt input{width:auto;margin:0}

/* page head */
.page-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.page-head .count{color:var(--muted);font-size:14px}
.page-head-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.add-btn{background:#fff;border:1px solid #d5d9e0;color:#1f2328;font-weight:600}
.add-btn:hover{background:var(--primary);border-color:var(--primary);color:#fff}

/* detail */
.detail-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.detail-head .actions{display:flex;gap:8px}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.gallery img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:zoom-in}
.gallery.single{display:block}
.gallery.single img{width:100%;max-width:100%;aspect-ratio:auto}
.kv{width:100%;border-collapse:collapse}
.kv th{text-align:left;color:var(--muted);font-weight:600;padding:6px 10px 6px 0;vertical-align:top;width:42%}
.kv td{padding:6px 0}
.notes{margin-top:12px;white-space:pre-wrap}

/* tables */
table.data{width:100%;border-collapse:collapse}
table.data th,table.data td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);font-size:14px}
table.data th{color:var(--muted);font-weight:600}

/* component table */
.comp-table{width:100%;border-collapse:collapse;margin-bottom:8px}
.comp-table th{text-align:left;font-size:13px;color:var(--muted);padding:4px 6px}
.comp-table td{padding:4px 6px}
.comp-table input,.comp-table select{margin:0}

/* image strip trong form sửa */
.img-strip{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.img-item{position:relative}
.img-item img{width:90px;height:90px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.del-img{position:absolute;top:-6px;right:-6px;background:var(--danger);color:#fff;border:none;border-radius:50%;width:22px;height:22px;cursor:pointer;line-height:1}

.form-actions{margin-top:18px;display:flex;gap:10px}

/* tabs */
.tabs{display:flex;gap:4px;border-bottom:2px solid var(--line);margin-bottom:18px;flex-wrap:wrap}
.tabs a{padding:7px 14px;color:#374151;border-radius:8px;text-transform:uppercase;letter-spacing:.3px;font-size:13px}
.tabs a:hover{background:#f0f1f3;text-decoration:none}
.tabs a.active{background:var(--primary);color:#fff;font-weight:600}

/* edit rows (admin) */
.inline-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.inline-form input,.inline-form select{width:auto}
.edit-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:8px 0;border-bottom:1px solid var(--line)}
.edit-row-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap;flex:1}
.edit-row input,.edit-row select{width:auto}

/* timeline */
.timeline{list-style:none;padding:0;margin:0}
.timeline>li{padding:8px 0;border-bottom:1px solid var(--line)}
.changes{margin:4px 0 0 16px;font-size:13px;color:#374151}

/* ===== MOBILE ===== */
@media (max-width: 760px){
  .topbar{gap:10px;padding:10px 14px}
  .topbar nav{order:3;width:100%;flex-wrap:wrap;gap:4px}
  .topbar nav a{padding:6px 9px;font-size:12px;letter-spacing:0}
  .user-box{gap:8px}
  .user-meta .uname{font-size:13px}

  .container{padding:0 14px;margin:14px auto}
  .card{padding:14px}

  .detail-grid{grid-template-columns:1fr}
  .row3{grid-template-columns:1fr 1fr}
  .row3 > label:nth-child(3){grid-column:1 / -1}

  .grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .tile-title{font-size:14px}

  .page-head{flex-direction:column;align-items:stretch;gap:10px}
  .page-head-left{flex-wrap:wrap}
  .page-head-left .page-title{width:100%}
  .add-btn{flex:1;text-align:center}

  .filters{gap:8px}
  .filters > input,.filters > select{flex:1 1 100%;max-width:none;width:100%}
  .filter-actions{margin-left:0;width:100%}
  .filter-actions .btn{flex:1;text-align:center}
  .filter-opts{grid-template-columns:1fr}

  .tabs{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .tabs a{white-space:nowrap}

  .gallery{grid-template-columns:1fr 1fr}
  .gallery.single img{max-width:100%}
  .detail-head{align-items:flex-start}

  .comp-table thead{display:none}
  .comp-table,.comp-table tbody{display:block;width:100%}
  .comp-table tr{display:flex;flex-wrap:wrap;gap:8px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:10px;margin-bottom:10px}
  .comp-table td{padding:0}
  .comp-table td:nth-child(1){flex:1 1 100%}
  .comp-table td:nth-child(2){flex:1 1 45%}
  .comp-table td:nth-child(3){flex:1 1 30%}
  .comp-table td:nth-child(4){flex:0 0 auto;margin-left:auto}
  .comp-table select,.comp-table input{width:100%}
  table.data{display:block;overflow-x:auto}
  .kv th{width:auto;padding-right:12px}

  .edit-row-form{flex:1 1 100%}
}