*{box-sizing:border-box}
:root{--bg:#11140f;--bg2:#181c14;--card:#1e2318;--line:#2e3626;--ink:#eef1e6;--dim:#9aa48c;
--gold:#d8b25c;--sq-l:#3a4430;--sq-d:#28301f;--hot:#e8c86a;--ok:#5fbf7a;--bad:#d9534f}
html,body{margin:0;background:var(--bg);color:var(--ink);
font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
-webkit-text-size-adjust:100%}
a{color:var(--gold)}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:420px;margin:0 auto;padding:36px 16px 60px}
h1,h2,h3{line-height:1.25;margin:0}
nav{border-bottom:1px solid var(--line);background:var(--bg2)}
nav .wrap{display:flex;align-items:center;gap:14px;height:54px}
nav .brand{font-weight:700;color:var(--gold);text-decoration:none;margin-right:auto;font-size:17px;
display:flex;align-items:center;gap:9px}
/* Logo vuông bo góc. Cho width/height cứng vào thẻ img để trình duyệt chừa chỗ
   sẵn — không thì lúc ảnh tải xong cả thanh điều hướng bị đẩy một nhịp. */
nav .brand img{border-radius:7px;display:block}
nav a{font-size:14px;text-decoration:none;color:var(--dim)}
nav a:hover{color:var(--ink)}
/* Avatar + menu tài khoản đã chuyển sang assets/avatar.css (08/08/2026) —
   dùng chung với màn hình bàn cờ /app/. */
.hero{padding:52px 0 38px;background:radial-gradient(1200px 500px at 50% -10%,#243019 0%,var(--bg) 65%)}
.hero h1{font-size:clamp(26px,6vw,46px);letter-spacing:-.5px}
.sub{color:var(--dim);margin-top:14px;font-size:clamp(15px,3.6vw,19px);max-width:52ch}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.btn{display:inline-block;padding:12px 22px;border-radius:10px;text-decoration:none;
font-weight:600;font-size:15px;border:1px solid var(--line);background:var(--bg2);color:var(--ink);
cursor:pointer;font-family:inherit}
.btn-p{background:var(--gold);color:#1b1a10;border-color:var(--gold)}
.btn:disabled{opacity:.55;cursor:default}
.stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.stat{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:10px 14px;flex:1 1 140px}
.stat b{display:block;font-size:clamp(17px,4.4vw,22px);color:var(--gold)}
.stat span{font-size:12px;color:var(--dim);text-transform:uppercase;letter-spacing:.06em}
section{padding:32px 0}
.note{color:var(--dim);font-size:14px;margin:8px 0 20px;max-width:74ch}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(152px,1fr))}
.gm{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;
display:flex;flex-direction:column}
.ph{position:relative;width:100%;aspect-ratio:1/1;background:var(--sq-d);overflow:hidden}
.ph img,.ph svg{position:absolute;inset:0;width:100%;height:100%;display:block}
.ph img{object-fit:cover;object-position:50% 22%}
.ph img.gone{display:none}
/* Thẻ chưa có ảnh: chữ cái đầu đè lên vân tay bàn cờ. Không có nó thì 16 thẻ
   trông như 16 ô vuông tối giống hệt nhau, không ra hình người nào cả.
   Nằm DƯỚI thẻ img trong thứ tự vẽ, nên ảnh về là tự bị che đi. */
.mono{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
font-size:44px;font-weight:700;letter-spacing:1px;color:rgba(232,200,106,.62);
text-shadow:0 2px 14px rgba(0,0,0,.55);pointer-events:none}
.ph img{z-index:2}
.cr{position:absolute;left:0;right:0;bottom:0;padding:3px 6px;font-size:9px;line-height:1.35;
color:#e8e4d2;background:linear-gradient(transparent,rgba(0,0,0,.78));text-align:right}
.cr a{color:#e8e4d2;text-decoration:none}
.bd{padding:9px 10px 11px;display:flex;flex-direction:column;gap:5px}
.gm .nm{font-weight:650;font-size:14px}
.gm .meta{font-size:11.5px;color:var(--dim)}
.gm .g{font-size:12px;color:var(--gold);font-weight:600}
/* biểu mẫu */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
label{display:block;font-size:13px;color:var(--dim);margin:14px 0 5px}
input{width:100%;background:var(--bg);color:var(--ink);border:1px solid var(--line);
border-radius:9px;padding:11px 13px;font-size:16px;font-family:inherit}
input:focus{outline:none;border-color:var(--gold)}
.hint{font-size:12px;color:var(--dim);margin-top:5px}
.msg{margin-top:14px;padding:11px 13px;border-radius:9px;font-size:14px;display:none}
.msg.show{display:block}
.msg.err{background:rgba(217,83,79,.14);color:#f0a9a6;border:1px solid rgba(217,83,79,.35)}
.msg.good{background:rgba(95,191,122,.14);color:#a8e0b8;border:1px solid rgba(95,191,122,.35)}
form .btn{width:100%;margin-top:18px}
.alt{margin-top:16px;font-size:14px;color:var(--dim);text-align:center}
/* đăng nhập bằng Google */
.btn-g{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
background:#fff;color:#1f1f1f;border-color:#dadce0;padding:11px 16px}
.btn-g:hover{background:#f3f4f2}
.btn-g span{font-weight:600;font-size:15px}
.or{display:flex;align-items:center;gap:12px;color:var(--dim);font-size:12px;margin:16px 0 2px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.linked{display:flex;align-items:center;gap:10px;background:var(--bg2);
border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:14px;margin-top:6px}
.linked .em{color:var(--dim);font-size:12.5px}
.linked .sp{margin-left:auto;padding:7px 13px;font-size:13px;flex:none}
.chk{font-size:12.5px;margin-top:6px;min-height:17px}
.chk.ok{color:var(--ok)} .chk.bad{color:var(--bad)}
#code{text-transform:uppercase;letter-spacing:.32em;font-size:24px;text-align:center;
font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.kv{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv span:first-child{color:var(--dim)}
.pill{display:inline-block;font-size:11.5px;padding:2px 9px;border-radius:99px;font-weight:600}
.pill-ok{background:rgba(95,191,122,.15);color:var(--ok)}
.pill-bad{background:rgba(217,83,79,.15);color:var(--bad)}
footer{padding:26px 0 46px;color:var(--dim);font-size:12.5px;border-top:1px solid var(--line);margin-top:24px}
@media(max-width:520px){.grid{grid-template-columns:repeat(auto-fill,minmax(132px,1fr))}}

/* ---------- màn hình đại lý và quản trị ---------- */
.wide{max-width:1180px;margin:0 auto;padding:24px 16px 60px}
.tabs{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}
.tabs button{background:var(--bg2);border:1px solid var(--line);color:var(--dim);
border-radius:9px;padding:8px 14px;font-size:14px;cursor:pointer;font-family:inherit}
.tabs button.on{background:var(--gold);color:#1b1a10;border-color:var(--gold);font-weight:600}
.cards{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin-bottom:8px}
.mini-card{background:var(--card);border:1px solid var(--line);border-radius:11px;padding:12px 14px}
.mini-card b{display:block;font-size:20px;color:var(--gold);margin-bottom:2px}
.mini-card span{font-size:11.5px;color:var(--dim);text-transform:uppercase;letter-spacing:.05em}
.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-top:12px}
.panel h2{font-size:17px;margin-bottom:10px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.row>div{flex:1 1 130px}
.row label{margin-top:0}
select{width:100%;background:var(--bg);color:var(--ink);border:1px solid var(--line);
border-radius:9px;padding:11px 13px;font-size:15px;font-family:inherit}
button.mini{background:var(--bg2);border:1px solid var(--line);color:var(--ink);border-radius:7px;
padding:4px 9px;font-size:12px;cursor:pointer;margin:0 4px 4px 0;font-family:inherit}
button.mini:hover{border-color:var(--gold)}
.tbl-wrap{overflow-x:auto;margin-top:10px}
td.mono,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.08em}
td.canh-bao{color:#e0a340;font-weight:600}
.code-chip{display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:6px 10px;
margin:0 6px 6px 0;letter-spacing:.14em;font-size:15px}
.dem{font-size:12.5px;color:var(--dim);margin-top:8px}
.chk{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--dim);margin:0}
.chk input{width:auto}