:root{
  --bg:#0b0e17; --bg2:#121728; --card:#171d30; --line:#26304a;
  --ink:#e8edf7; --muted:#8b96ac; --accent:#8be04a; --accent2:#4fa8ff;
  --danger:#ff5d6c; --gold:#ffd24a; --radius:14px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:radial-gradient(1200px 600px at 50% -10%, #16203a 0%, var(--bg) 60%);
  color:var(--ink); font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  min-height:100%;
}
.hidden{display:none !important}
.muted{color:var(--muted)} .small{font-size:13px}
a{color:var(--accent2);cursor:pointer;text-decoration:none}
.err{color:var(--danger);font-size:13px;min-height:18px;margin:4px 0}

/* topbar */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 20px;border-bottom:1px solid var(--line);
  background:rgba(11,14,23,.7);backdrop-filter:blur(8px);position:sticky;top:0;z-index:10;
}
.brand{font-weight:800;font-size:20px;letter-spacing:.3px}
.brand span{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.auth{display:flex;align-items:center;gap:10px}
.who{display:flex;align-items:center;gap:8px;font-weight:600}
.who .avatar{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:grid;place-items:center;color:#0b0e17;font-weight:800}

/* buttons */
.btn{
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  padding:9px 14px;border-radius:10px;cursor:pointer;font:inherit;font-weight:600;
}
.btn:hover{border-color:#3a496e}
.btn:active{transform:scale(.97)}
.btn.primary{background:linear-gradient(135deg,var(--accent),#5bbf39);color:#0b0e17;border:none}
.btn.big{width:100%;padding:12px;font-size:16px;margin-top:6px}
.btn.google{width:100%;margin-top:8px;background:#fff;color:#222;border:none}
.badge{font-size:11px;background:var(--gold);color:#111;padding:2px 8px;border-radius:20px;vertical-align:middle;font-weight:700}

/* layout */
.layout{display:grid;grid-template-columns:1fr 340px;gap:20px;padding:20px;max-width:1200px;margin:0 auto}
@media(max-width:820px){.layout{grid-template-columns:1fr}}
.section-title{font-size:16px;margin:4px 0 12px;color:var(--muted);text-transform:uppercase;letter-spacing:1px}

/* game grid */
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.game-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;
  transition:transform .12s,border-color .12s;box-shadow:var(--shadow);
}
.game-card:hover{transform:translateY(-3px);border-color:var(--accent)}
.game-thumb{aspect-ratio:16/10;background:linear-gradient(135deg,#1d2540,#2a3556);display:grid;place-items:center;font-size:44px;overflow:hidden}
.game-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.game-body{padding:12px 14px}
.game-name{font-weight:700;font-size:16px}
.game-tag{color:var(--muted);font-size:13px;margin-top:2px}

/* side panels */
.col-side{display:flex;flex-direction:column;gap:16px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
.panel-title{margin:0 0 10px;font-size:15px}
.lb-list{display:flex;flex-direction:column;gap:6px}
.lb-row{display:grid;grid-template-columns:26px 1fr auto;gap:8px;align-items:center;padding:6px 8px;border-radius:8px;background:var(--bg2)}
.lb-row .rank{color:var(--muted);font-weight:700;text-align:center}
.lb-row.top1 .rank{color:var(--gold)}
.lb-row .name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-row .sc{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums}
.lb-row .gtag{color:var(--muted);font-size:11px}

/* chat */
.chat-log{height:240px;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:4px;margin-bottom:8px}
.chat-msg{background:var(--bg2);border-radius:8px;padding:6px 10px;font-size:14px;word-break:break-word}
.chat-msg .cn{color:var(--accent2);font-weight:700;margin-right:6px}
.chat-form{display:flex;gap:8px}
.chat-form input{flex:1}

input{
  background:var(--bg2);border:1px solid var(--line);color:var(--ink);
  padding:10px 12px;border-radius:10px;font:inherit;width:100%;
}
input:focus{outline:none;border-color:var(--accent2)}

/* manage */
.manage{margin-top:26px}
.manage-form{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.manage-form input{width:auto;flex:1;min-width:120px}
.manage-list{display:flex;flex-direction:column;gap:6px}
.manage-row{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--bg2);padding:8px 12px;border-radius:8px}
.manage-row .del{color:var(--danger);cursor:pointer;font-weight:700}

/* modal */
.modal{position:fixed;inset:0;background:rgba(4,6,12,.75);display:grid;place-items:center;z-index:50;padding:16px}
.modal-card{background:var(--bg2);border:1px solid var(--line);border-radius:18px;padding:26px;width:min(400px,100%);position:relative;box-shadow:var(--shadow)}
.modal-card h2{margin:0 0 16px}
.modal-card form{display:flex;flex-direction:column;gap:10px}
.modal-x{position:absolute;top:12px;right:14px;background:none;border:none;color:var(--muted);font-size:18px;cursor:pointer}
.switch{margin-top:14px;text-align:center;color:var(--muted);font-size:14px}

.google-mount { display: flex; justify-content: center; }


/* ===== footer liên hệ cộng đồng ===== */
.site-foot {
  margin: 28px auto 34px; padding: 14px 18px;
  max-width: 1180px; text-align: center;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: #8a93a6; font-size: 13.5px;
  display: flex; flex-direction: column; gap: 10px; align-items: center;
}
.site-foot .foot-row {
  display: flex; gap: 8px; justify-content: center; align-items: center; flex-wrap: wrap;
}
.site-foot .foot-mail { color: #8be04a; text-decoration: none; font-weight: 600; }
.site-foot .foot-mail:hover { text-decoration: underline; }

/* the platform plug: quieter than the contact line, but readable */
.site-foot .foot-tfl5 {
  max-width: 760px; font-size: 12.5px; line-height: 1.55; color: #7c8598;
  border: 1px solid rgba(255,255,255,0.07); border-radius: 10px;
  padding: 10px 14px; background: rgba(255,255,255,0.02);
}
.site-foot .foot-tfl5 b { color: #b9c4d6; font-weight: 600; }
.site-foot .foot-tfl5 i { font-style: normal; color: #9aa6bb; }
.site-foot .foot-badge {
  font-weight: 700; letter-spacing: .5px; font-size: 11px; text-transform: uppercase;
  color: #0d1116; background: #8be04a; border-radius: 5px; padding: 2px 7px;
}
.site-foot .foot-link { color: #8be04a; text-decoration: none; font-weight: 600; white-space: nowrap; }
.site-foot .foot-link:hover { text-decoration: underline; }
/* second link sits beside the first, one notch quieter */
.site-foot .foot-gh { color: #9aa6bb; font-weight: 500; margin-left: 14px; }
.site-foot .foot-gh:hover { color: #cdd6e4; }