:root{
  /* Báo cho trình duyệt biết đang ở tông nào, để các control gốc (lịch của input[type=date],
     danh sách xổ của select, thanh cuộn) tự vẽ theo đúng tông thay vì luôn nền trắng. */
  color-scheme: light;
  --bg:#f4f6f8; --panel:#ffffff; --fg:#161b22; --muted:#66717f;
  --border:#e3e7ec; --accent:#0f766e; --accent-fg:#ffffff;
  --male:#2563eb; --female:#db2777;
  --warn-bg:#fff7ed; --warn-fg:#9a3412; --warn-bd:#fed7aa;
  --ok:#15803d; --busy:#d97706; --err:#dc2626;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --topbar:60px;
}
@media (prefers-color-scheme:dark){
  :root{
    color-scheme: dark;
    --bg:#0e1216; --panel:#171d23; --fg:#e6ebf1; --muted:#94a1b0;
    --border:#262f39; --accent:#2dd4bf; --accent-fg:#06231f;
    --male:#60a5fa; --female:#f472b6;
    --warn-bg:#2a1c0f; --warn-fg:#fbbf24; --warn-bd:#5b3c12;
    --ok:#4ade80; --busy:#fbbf24; --err:#f87171;
    --shadow:none;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;line-height:1.5;-webkit-tap-highlight-color:transparent}
.hide{display:none!important}

input,select,textarea,button{font:inherit;color:inherit}
input[type=text],input[type=number],input[type=date],select,textarea{
  width:100%;padding:9px 10px;background:var(--bg);border:1px solid var(--border);
  border-radius:9px;outline:none;min-width:0}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}

/* Safari trên iOS không tự căn chiều cao/lề cho input[type=date] như các ô khác */
input[type=date]{min-height:40px;line-height:1.2}
input[type=date]::-webkit-date-and-time-value{text-align:left;margin:0}
input[type=date]::-webkit-calendar-picker-indicator{cursor:pointer;opacity:.75}
input[type=date]::-webkit-calendar-picker-indicator:hover{opacity:1}
textarea{resize:vertical;min-height:96px;font-family:ui-monospace,Consolas,monospace;font-size:13px}
label{display:block;font-size:11px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:5px}
label i{font-style:normal;text-transform:none;letter-spacing:0;font-weight:500;opacity:.8}

button{cursor:pointer;border:1px solid var(--border);background:var(--panel);
  padding:9px 14px;border-radius:9px;font-weight:600;min-height:40px}
button:active{transform:scale(.98)}
button:disabled{opacity:.45;cursor:not-allowed}
button.primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
button.ghost{background:transparent;color:var(--muted);font-weight:500}
button.icon{display:grid;place-items:center;padding:0;width:40px;height:40px;
  background:transparent;border-color:transparent;color:var(--fg)}
button.icon.sq{background:var(--panel);border-color:var(--border);flex:none}
button.icon.danger{color:var(--err)}

/* ---------------- cổng vào (bắt buộc chọn nhóm) ---------------- */
.gate{position:fixed;inset:0;z-index:100;background:var(--bg);overflow-y:auto;
  display:flex;align-items:center;justify-content:center;
  padding:24px 18px calc(24px + env(safe-area-inset-bottom))}
.gbox{width:100%;max-width:400px}
.glogo{font-size:40px;line-height:1;margin-bottom:10px}
.gbox h1{font-size:24px;margin:0 0 6px}
.gsub{color:var(--muted);font-size:14px;margin:0 0 22px}
.gbox label{margin-bottom:6px}
.gbox input[type=text]{padding:12px;font-size:16px;font-weight:600}
.gbtn{width:100%;margin-top:10px;min-height:48px;font-size:15px}
.gmsg{margin-top:14px;padding:11px 13px;border-radius:9px;font-size:13.5px;line-height:1.5}
.gmsg.bad{background:var(--warn-bg);color:var(--warn-fg);border:1px solid var(--warn-bd)}
.gmsg .actions{margin-top:10px}
.glabel{font-size:11px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.05em;margin-bottom:7px}
.grecent{margin-top:26px}
.growl{display:flex;gap:6px;align-items:center;margin-bottom:6px}
.grow{flex:1;text-align:left;font-weight:600;padding:11px 13px;min-height:44px}
.ghint{font-size:12.5px;color:var(--muted);margin:26px 0 0;line-height:1.55}
.ghint code{background:var(--panel);border:1px solid var(--border);
  border-radius:5px;padding:1px 5px;font-size:12px}

/* ---------------- topbar ---------------- */
.topbar{position:fixed;top:0;left:0;right:0;height:var(--topbar);z-index:40;
  display:flex;align-items:center;gap:6px;padding:0 8px 0 4px;
  background:var(--panel);border-bottom:1px solid var(--border)}
.topbar h1{flex:1;font-size:17px;font-weight:700;margin:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.led{width:10px;height:10px;border-radius:50%;background:var(--muted);opacity:.35;flex:none;margin-right:6px}
.led.live{background:var(--ok);opacity:1;box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 22%,transparent)}
.led.connecting{background:var(--busy);opacity:1}
.led.error{background:var(--err);opacity:1}

/* ---------------- drawer ---------------- */
.drawer{position:fixed;top:0;bottom:0;left:0;width:286px;max-width:84vw;z-index:70;
  background:var(--panel);border-right:1px solid var(--border);
  transform:translateX(-100%);transition:transform .24s cubic-bezier(.32,.72,0,1);
  overflow-y:auto;display:flex;flex-direction:column;padding-bottom:20px}
.drawer.open{transform:none}
.dhead{padding:20px 18px 16px;border-bottom:1px solid var(--border);margin-bottom:8px}
.dtitle{font-size:19px;font-weight:800}
.dsub{font-size:12.5px;color:var(--muted)}
.dnav{display:flex;align-items:center;gap:12px;width:100%;text-align:left;
  background:transparent;border:none;border-radius:0;padding:14px 18px;min-height:52px;font-weight:600}
.dnav .di{width:24px;height:24px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--bg);border:1px solid var(--border);font-size:12px;font-weight:800;color:var(--muted)}
.dnav .dlabel{flex:1}
.dnav .dcount{font-size:12px;color:var(--muted);font-weight:600}
.dnav.on{background:color-mix(in srgb,var(--accent) 11%,transparent);color:var(--accent)}
.dnav.on .di{background:var(--accent);border-color:var(--accent);color:var(--accent-fg)}
.dsync{margin-top:auto;padding:16px 18px 0;border-top:1px solid var(--border)}
.dsync .drow{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.dsync .drow button{flex:1 1 auto;padding:8px 10px;font-size:13.5px}
.droom{font-size:16px;font-weight:800;word-break:break-all;margin-bottom:4px}
.dstatus{font-size:12.5px;color:var(--muted);margin:10px 0 0;line-height:1.45}
.dstatus b{color:var(--fg)}

.scrim{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:65;
  opacity:0;pointer-events:none;transition:opacity .24s}
.scrim.on{opacity:1;pointer-events:auto}
#sheetScrim{z-index:55}

/* ---------------- layout ---------------- */
main{max-width:920px;margin:0 auto;padding:calc(var(--topbar) + 12px) 12px calc(40px + env(safe-area-inset-bottom))}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;
  padding:14px;margin-bottom:12px;box-shadow:var(--shadow)}
.phead{display:flex;align-items:baseline;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}
h2{font-size:16px;margin:0;font-weight:700}
.meta{color:var(--muted);font-size:12.5px;font-weight:500;margin:0}
.empty{color:var(--muted);font-size:14px;text-align:center;padding:22px 10px}

.picker{display:flex;gap:6px;align-items:center}
.picker select{flex:1;font-weight:600;min-height:40px}

.row{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end;margin-bottom:10px}
.row>*{flex:1 1 130px;min-width:0}
.row .f2{flex:2 1 150px}
.row .f-sm{flex:1 1 78px;max-width:130px}
.row .f-auto{flex:0 0 auto}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.actions button{flex:1 1 auto}
.check{display:flex;align-items:center;gap:9px;text-transform:none;letter-spacing:0;
  font-size:14px;font-weight:500;color:var(--fg);margin:4px 0 0;padding:6px 0;min-height:40px}
.check input{width:20px;height:20px;flex:none;accent-color:var(--accent)}

details.panel>summary{cursor:pointer;font-weight:700;font-size:16px;
  display:flex;align-items:center;gap:8px;list-style:none;min-height:28px}
details.panel>summary::-webkit-details-marker{display:none}
details.panel>summary::before{content:"▸";color:var(--muted);font-size:13px;transition:.15s}
details.panel[open]>summary::before{transform:rotate(90deg)}
details.panel>summary .meta{margin-left:auto;text-align:right}
.cfgbody{padding-top:14px;margin-top:12px;border-top:1px solid var(--border)}

/* ---------------- bảng ---------------- */
.tscroll{overflow-x:auto;margin:0 -4px}
table{width:100%;border-collapse:collapse}
th{font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);
  text-align:left;padding:6px 5px;border-bottom:1px solid var(--border);font-weight:700;white-space:nowrap}
td{padding:5px;border-bottom:1px solid var(--border);vertical-align:middle}
tbody tr:last-child td{border-bottom:none}
td input,td select{padding:7px 8px}
.w-gt{width:58px}.w-rt{width:64px}.w-ck{width:44px}.w-x{width:40px}.w-rk{width:26px}
th.num,td.num{text-align:center;width:52px;font-variant-numeric:tabular-nums}
td.num{font-weight:600}
td.rk{color:var(--muted);font-size:12px;font-weight:700;text-align:center}
.stats tbody tr:first-child td.rk{color:var(--accent)}

.gtoggle{width:100%;padding:7px 4px;font-size:12.5px;font-weight:700;min-height:34px;
  border-radius:8px;text-align:center}
.gtoggle.m{color:var(--male);border-color:color-mix(in srgb,var(--male) 35%,transparent);
  background:color-mix(in srgb,var(--male) 10%,transparent)}
.gtoggle.f{color:var(--female);border-color:color-mix(in srgb,var(--female) 35%,transparent);
  background:color-mix(in srgb,var(--female) 10%,transparent)}
td .ck{width:22px;height:22px;accent-color:var(--accent);display:block;margin:0 auto}
.dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:6px;vertical-align:middle;flex:none}
.dot.m{background:var(--male)}
.dot.f{background:var(--female)}

.warn{background:var(--warn-bg);color:var(--warn-fg);border:1px solid var(--warn-bd);
  border-radius:10px;padding:11px 13px;font-size:13.5px;margin-bottom:12px}
.warn ul{margin:6px 0 0;padding-left:18px}
.warn li{margin-bottom:3px}

/* ---------------- lịch thi đấu ---------------- */
.round{margin-bottom:14px}
.rhead{display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  flex-wrap:wrap;padding:0 4px 7px}
.rhead .rt{font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.06em}
.rhead .rest{color:var(--muted);font-size:12.5px;flex:1;text-align:right}

.match{display:block;width:100%;text-align:left;background:var(--panel);
  border:1px solid var(--border);border-radius:12px;padding:9px 12px 10px;
  margin-bottom:8px;box-shadow:var(--shadow)}
.match .mhead{display:flex;justify-content:space-between;align-items:center;gap:8px;
  font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.match .mstate.done{color:var(--ok)}
.tabs{display:flex;gap:6px;margin-bottom:12px}
.tab{flex:1;padding:8px 10px;font-size:13.5px;min-height:38px;
  background:var(--bg);color:var(--muted);font-weight:600}
.tab.on{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
.picker input[type=date]{flex:1;min-height:40px;font-weight:600}
.picker .sq{width:auto;padding:0 12px;font-size:13px;font-weight:600}
.cfgbody{padding-top:14px;margin-top:12px;border-top:1px solid var(--border)}

.tmembers{display:block;font-size:12px;color:var(--muted);font-weight:500;margin-top:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tout{color:var(--warn-fg);font-weight:600}
#tlist td input[type=text]{margin-bottom:1px}
.match .gap{opacity:.62;font-weight:600;margin-left:2px}
.match .gap.over{opacity:1;color:var(--warn-fg);background:var(--warn-bg);
  border:1px solid var(--warn-bd);border-radius:5px;padding:0 5px;margin-left:4px}
.mteam{display:flex;align-items:center;gap:10px;padding:6px 0}
.mteam .names{flex:1;font-size:14.5px;min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mteam .sc{font-size:21px;font-weight:800;min-width:32px;text-align:right;
  font-variant-numeric:tabular-nums;color:var(--muted)}
.mteam.win .names{font-weight:800}
.mteam.win .sc{color:var(--ok)}
.mdiv{height:1px;background:var(--border);margin:1px 0}

/* ---------------- sheet nhập điểm ---------------- */
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:60;max-height:92vh;overflow-y:auto;
  background:var(--panel);border-radius:18px 18px 0 0;border:1px solid var(--border);border-bottom:none;
  padding:6px 16px calc(16px + env(safe-area-inset-bottom));
  transform:translateY(110%);transition:transform .26s cubic-bezier(.32,.72,0,1)}
.sheet.open{transform:none}
.sgrip{width:38px;height:4px;border-radius:2px;background:var(--border);margin:6px auto 4px}
.shead{display:flex;align-items:center;gap:8px;margin-bottom:2px}
.shead span{flex:1;font-weight:800;font-size:16px}
.shint{font-size:12.5px;color:var(--muted);margin:0 0 12px}
.steam{display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  padding:12px 14px;border-radius:11px;border:2px solid var(--border);
  background:var(--bg);min-height:54px;margin-bottom:8px}
.steam .snames{flex:1;font-size:15px;font-weight:600}
.steam .swin{display:none;font-size:10.5px;font-weight:800;color:var(--ok);
  text-transform:uppercase;letter-spacing:.06em;flex:none}
.steam.win{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,transparent)}
.steam.win .swin{display:inline}
.stepper{display:flex;gap:8px;align-items:center;margin-bottom:16px}
.stepper .sq{width:56px;height:56px;font-size:22px;font-weight:700}
.stepper input{flex:1;text-align:center;font-size:28px;font-weight:800;padding:10px 4px;
  font-variant-numeric:tabular-nums;height:56px}
.sfoot{display:flex;gap:8px;padding-top:4px}
.sfoot button{flex:1;min-height:48px}
.sfoot .primary{flex:2}

#toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,16px);z-index:80;
  background:var(--fg);color:var(--panel);padding:10px 18px;border-radius:999px;
  font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.22s;
  max-width:88vw;text-align:center}
#toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------------- màn hình lớn ---------------- */
@media (min-width:700px){
  main{padding-left:18px;padding-right:18px}
  .panel{padding:18px}
  .rounds-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .match{margin-bottom:0}
  .w-gt{width:70px}.w-rt{width:78px}
}

@media print{
  .topbar,.drawer,.scrim,.sheet,#toast,.actions,details.panel,.picker{display:none!important}
  body{background:#fff}
  main{padding-top:10px}
  .panel{border:none;box-shadow:none;padding:0}
  .round,.match{break-inside:avoid}
}