:root{
  --bg:#f6f7fb;--card:#fff;--text:#1d2330;--muted:#5f6b7a;--line:#e3e7ee;--accent:#d03a46;--accent-ink:#fff;--focus:#2563eb;--ok:#0a7a43;
  --radius:14px;--shadow:0 6px 24px rgba(20,30,60,.08);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#12151c;--card:#1b2029;--text:#eef1f6;--muted:#9aa5b4;--line:#2b323d;--accent:#ff6b76;--accent-ink:#1b0a0c;--focus:#7ab0ff;--ok:#4cc38a;--shadow:0 6px 24px rgba(0,0,0,.4)}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--focus)}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;background:var(--card);padding:8px 12px;border-radius:8px;z-index:50}
header.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;max-width:1180px;margin:0 auto;flex-wrap:wrap}
.logo{color:var(--text);text-decoration:none}
.nav{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:.92rem}
.nav a{color:var(--muted);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current=page]{color:var(--text);border-bottom-color:var(--accent)}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:4px 0 12px}
.toolbar h1{margin:0;font-size:1.35rem}
.logo{font-weight:800;font-size:1.25rem;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.logo span.dot{width:22px;height:22px;border-radius:50%;background:conic-gradient(#e8505b,#f9b233,#2fb67c,#3b82f6,#9b59b6,#e8505b);display:inline-block}
.top-actions{display:flex;gap:8px;flex-wrap:wrap}
main{max-width:1180px;margin:0 auto;padding:0 16px 40px}
.layout{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:920px){.layout{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.stage-card{padding:16px;display:flex;flex-direction:column;align-items:center;gap:12px}
.stage{position:relative;width:min(100%,640px);aspect-ratio:1}
.stage canvas{width:100%;height:100%;display:block}
.pointer{position:absolute;left:50%;top:-4px;transform:translateX(-50%);width:0;height:0;border-left:16px solid transparent;border-right:16px solid transparent;border-top:34px solid var(--text);filter:drop-shadow(0 2px 2px rgba(0,0,0,.3));z-index:2;pointer-events:none}
.spin-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:22%;aspect-ratio:1;border-radius:50%;border:4px solid #fff;background:var(--accent);color:var(--accent-ink);font:800 clamp(.9rem,2.6vw,1.4rem)/1 system-ui;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.35);z-index:3}
.spin-btn:disabled{opacity:.55;cursor:not-allowed}
.spin-btn:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.status{min-height:1.5em;color:var(--muted);text-align:center}
.panel{padding:12px 16px 16px}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:12px}
.tab{background:none;border:0;border-bottom:3px solid transparent;color:var(--muted);font:inherit;font-weight:600;padding:10px 12px;cursor:pointer}
.tab[aria-selected=true]{color:var(--text);border-bottom-color:var(--accent)}
.badge{display:inline-block;min-width:1.4em;padding:0 6px;border-radius:999px;background:var(--line);color:var(--text);font-size:.8rem;margin-left:4px}
textarea#entries{width:100%;min-height:240px;resize:vertical;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font:inherit;line-height:1.5}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:10px 0}
.btn{border:1px solid var(--line);background:var(--card);color:var(--text);font:inherit;font-weight:600;padding:8px 12px;border-radius:10px;cursor:pointer}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.small{padding:5px 9px;font-size:.88rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:999px;padding:5px 11px;font:inherit;font-size:.88rem;cursor:pointer}
.chip:hover{border-color:var(--accent)}
.field{display:flex;align-items:center;gap:8px;margin:8px 0}
.field label{font-weight:600}
select,input[type=number],input[type=text]{padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);font:inherit}
input[type=text]{min-width:0;flex:1}
input[type=range]{flex:1}
h2{font-size:1rem;margin:14px 0 6px}
.history{list-style:none;margin:0;padding:0;max-height:300px;overflow:auto}
.history li{display:flex;justify-content:space-between;gap:8px;padding:8px 4px;border-bottom:1px solid var(--line)}
.history .t{color:var(--muted);font-size:.85rem;white-space:nowrap}
.teams{display:grid;gap:8px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));margin-top:10px}
.team{border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--bg)}
.team h3{margin:0 0 4px;font-size:.95rem}
.team ul{margin:0;padding-left:18px}
.hint{color:var(--muted);font-size:.88rem}
dialog{border:0;border-radius:18px;padding:0;max-width:min(92vw,480px);width:100%;background:var(--card);color:var(--text);box-shadow:0 20px 60px rgba(0,0,0,.45)}
dialog::backdrop{background:rgba(10,14,24,.6)}
.result{padding:28px 24px;text-align:center}
.result .label{color:var(--muted);margin:0}
.result .win{font-size:clamp(1.8rem,7vw,3rem);font-weight:800;line-height:1.15;margin:8px 0 18px;word-break:break-word}
.result .actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.seo{max-width:760px;margin:32px auto 0;color:var(--muted)}
.seo h2{color:var(--text);font-size:1.15rem}
footer.site{max-width:1180px;margin:24px auto 0;padding:16px 16px 28px;color:var(--muted);font-size:.85rem;border-top:1px solid var(--line)}
footer.site nav{display:flex;flex-wrap:wrap;gap:6px 16px;margin-bottom:8px}
footer.site a{color:var(--muted)}
.seo p,.prose p,.prose li{line-height:1.65}
.seo details,.prose details{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:8px 0;background:var(--card);color:var(--text)}
.seo summary,.prose summary{cursor:pointer;font-weight:600}
.seo .links{display:flex;flex-wrap:wrap;gap:6px 14px}
.prose{max-width:760px;margin:0 auto;padding:8px 16px 24px}
.prose h1{font-size:1.6rem}
.prose h2{font-size:1.15rem;margin-top:22px}
kbd{border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:0 5px;font-size:.88em;background:var(--card)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:10px 16px;border-radius:10px;z-index:60;opacity:0;pointer-events:none;transition:opacity .2s}
.toast.show{opacity:1}
/* Chế độ trình chiếu */
body.present header.top,body.present .toolbar,body.present .panel-card,body.present .seo,body.present footer.site,body.present .status-extra{display:none}
body.present main{max-width:none;padding:0}
body.present .layout{display:block}
body.present .stage-card{border:0;box-shadow:none;background:var(--bg);min-height:100vh;justify-content:center;padding:12px}
body.present .stage{width:min(96vw,calc(100vh - 80px))}
.exit-present{display:none;position:fixed;right:12px;top:12px;z-index:20}
body.present .exit-present{display:inline-block}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Điện thoại: gọn đầu trang để bánh xe lên cao */
@media (max-width:600px){
  header.top{padding:8px 12px;gap:6px}
  .logo{font-size:1.1rem}
  .nav{flex-wrap:nowrap;overflow-x:auto;width:100%;gap:14px;font-size:.88rem;white-space:nowrap;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  main{padding:0 12px 32px}
  .toolbar{margin:0 0 8px}
  .toolbar h1{font-size:1.1rem;flex-basis:100%}
  .top-actions{flex-wrap:nowrap;gap:6px}
  .top-actions .btn{padding:6px 9px;font-size:.82rem}
  .tab{padding:10px 8px;white-space:nowrap;font-size:.92rem}
  .stage-card{padding:10px}
}
.weight-info{margin:6px 0 0}.weight-info[hidden]{display:none}

/* Trang quay số */
.num-stage{justify-content:center;min-height:320px;gap:18px}
.num-out{font-size:clamp(3rem,16vw,8rem);font-weight:800;line-height:1.1;text-align:center;font-variant-numeric:tabular-nums;word-break:break-word;min-height:1.2em}
.num-out.many{font-size:clamp(1.6rem,6vw,3.2rem);white-space:pre-wrap}
.btn.big{font-size:1.2rem;padding:12px 28px;border-radius:999px}
.field input[type=number]{width:7.5em}
body.present .num-stage{min-height:100vh}
body.present .num-out{font-size:clamp(5rem,28vw,20rem)}
body.present .num-out.many{font-size:clamp(2.5rem,10vw,7rem)}

/* Nhập từ Excel / CSV */
details.import{margin:12px 0;border:1px solid var(--line);border-radius:10px;padding:8px 12px;background:var(--bg)}
details.import summary{cursor:pointer;font-weight:600}
details.import textarea{width:100%;margin-top:8px;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--text);font:inherit;resize:vertical}
details.import input[type=file]{max-width:100%;margin-top:4px}
.field[hidden]{display:none}
.result .detail{font-size:clamp(1.1rem,3.4vw,1.6rem);margin:-6px 0 14px;line-height:1.4;white-space:pre-wrap}
.result .timer{font-size:1.6rem;font-weight:700;margin:0 0 14px;font-variant-numeric:tabular-nums}
.result .timer.over{color:var(--accent)}
.result .detail[hidden],.result .timer[hidden]{display:none}
#confetti{position:fixed;left:0;top:0;width:100vw;height:100vh;pointer-events:none;z-index:100}
.stage canvas{cursor:pointer}
.team-sum{grid-column:1/-1;margin:0}

/* Trang mẫu theo dịp */
.prose.wide{max-width:900px}
.occ-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));margin:14px 0}
.occ{display:flex;flex-direction:column;gap:2px;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--text);text-decoration:none;box-shadow:var(--shadow)}
.occ:hover{border-color:var(--accent)}
.occ span{color:var(--muted);font-size:.88rem}

/* Logo + ảnh nền khu vực quay */
.stage-card{background-size:cover;background-position:center}
.stage-card.has-bg .status{background:var(--card);padding:2px 12px;border-radius:999px}
.brand-logo{max-height:56px;max-width:60%;object-fit:contain}
.brand-logo[hidden]{display:none}
.brand-box .field{flex-wrap:wrap}

/* Bốc thăm, đua vịt */
.plain-ta{width:100%;min-height:200px;resize:vertical;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font:inherit;line-height:1.5;margin:6px 0}
.bt-out{margin:0;padding-left:0;list-style:none}
.bt-out li{padding:8px 4px;border-bottom:1px solid var(--line);font-weight:600}
.race-card{align-items:stretch;margin-bottom:16px}
.race-cv{width:100%;display:block}
.race-res{margin:0;padding-left:1.4em;columns:2;font-weight:600}
@media (max-width:600px){.race-res{columns:1}}
.race-list{margin-bottom:8px}
body.present .race-list{display:none}
body.present .race-card{min-height:100vh;justify-content:center}
body.present .race-res{font-size:1.4rem}

/* Đếm ngược Tết, đổi lịch */
.tet-card{padding:18px;text-align:center;margin:12px 0;background:linear-gradient(135deg,#c0121f,#e63946);color:#fff3c4;border:0}
.tet-card .hint{color:#ffe9a8}
.tet-parts{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.tet-parts div{background:rgba(0,0,0,.22);border-radius:12px;padding:10px 14px;min-width:76px}
.tet-parts b{display:block;font-size:clamp(1.8rem,8vw,3rem);line-height:1.1;font-variant-numeric:tabular-nums}
.tet-parts span{font-size:.85rem}
.tet-msg{font-size:1.6rem;font-weight:800;margin:6px 0 0}
.result-line{font-weight:600;min-height:1.5em;margin:8px 0 0}
.prose .field{flex-wrap:wrap}
.prose input[type=number]{width:6em}
.hide-hint{margin:0;text-align:center}
.hide-hint[hidden]{display:none}
.stage canvas{touch-action:pan-y}

.tbl{width:100%;border-collapse:collapse;margin:10px 0}
.tbl th,.tbl td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.tbl th{background:var(--card)}
.tet-card #tetName{min-height:1.3em}
.tet-card #tetDate{min-height:1.5em}
.tet-parts{min-height:98px}

/* Bài viết */
.article .crumbs{font-size:.88rem;color:var(--muted);margin-bottom:6px}
.article .crumbs a{color:var(--muted)}
.article .meta{color:var(--muted);font-size:.9rem;margin-top:-6px}
.article h3{font-size:1.02rem;margin:16px 0 4px}
.callout{border-left:4px solid var(--accent);background:var(--card);border-radius:0 10px 10px 0;padding:10px 14px;margin:16px 0;line-height:1.6}
.article .related{margin-top:28px;border-top:1px solid var(--line);padding-top:6px}
.article .links{display:flex;flex-wrap:wrap;gap:6px 14px}
.ideas li{margin:8px 0}
.rel-list{padding-left:1.2em}
.draft-banner{background:#fff3c4;color:#5a4300;border:1px solid #e6c34a;border-radius:10px;padding:8px 12px;font-weight:600}

.refs { margin: 0; padding-left: 1.1em; font-size: .9em; }
.refs li { margin: .15em 0; }

.privacy-notice { position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 50; max-width: 720px; margin: 0 auto; display: flex; gap: 12px; align-items: center; padding: 10px 14px; background: #fff; color: #1d2433; border: 1px solid #c9d1e3; border-radius: 10px; box-shadow: 0 4px 18px rgba(0,0,0,.18); font-size: .88rem; }
.privacy-notice[hidden] { display: none; }
.privacy-notice p { margin: 0; flex: 1; }
.privacy-notice button { flex: none; padding: 6px 14px; border-radius: 8px; border: 0; background: #2f5bea; color: #fff; font: inherit; cursor: pointer; }
@media (prefers-color-scheme: dark) { .privacy-notice { background: #1d2433; color: #e8ecf5; border-color: #3a4560; } }
.cap-info{margin:6px 0;color:var(--accent)}
.tm-out{font-size:clamp(3.5rem,20vw,11rem);letter-spacing:.02em}
.tm-out.over{color:var(--accent);animation:tmblink 1s steps(2,jump-none) infinite}
@keyframes tmblink{50%{opacity:.35}}
@media (prefers-reduced-motion:reduce){.tm-out.over{animation:none}}
.tm-inputs input[type=number]{width:4.5em}
.tm-btns{justify-content:center}
body.present .tm-out{font-size:min(30vw,45vh)}