/* Lucky6 — 馬會投注單 aesthetic. Ink green + newsprint paper. */
:root{
  --paper:#f4f1e9; --paper-2:#ebe6d8; --ink:#1c1a17; --ink-soft:#4a463e;
  --green:#0d5c46; --green-deep:#08402f; --green-line:#0d5c4622;
  --stamp:#b23120; --gold:#a8791f; --rule:#cfc7b3;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --serif:"Noto Serif TC","Noto Serif SC","Songti TC","Source Han Serif TC","Source Han Serif SC",Georgia,serif;
  --sans:"Noto Sans TC","Noto Sans SC","PingFang TC","PingFang SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
/* Simplified Chinese: lead with Noto SC so glyph forms + weights match (stay in-family) */
html[lang="zh-Hans"]{
  --serif:"Noto Serif SC","Noto Serif TC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","Noto Sans TC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
body{
  font-family:var(--sans); color:var(--ink); line-height:1.6;
  background:var(--paper);
  background-image:
    linear-gradient(90deg,#0000 0,#0000 calc(100% - 1px), var(--green-line) 100%),
    radial-gradient(circle at 12% 18%, #fff8 0, #0000 40%);
  min-height:100vh; display:flex; flex-direction:column;
}
.grain{position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
.wrap{width:100%;max-width:760px;margin:0 auto;padding:8px 20px 40px;position:relative;z-index:1;flex:1}
.topbar{position:relative;z-index:1;max-width:760px;margin:0 auto;width:100%;
  display:flex;align-items:center;justify-content:space-between;padding:18px 20px 10px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:34px;height:34px;border-radius:50%;background:var(--green);color:var(--paper);
  font-family:var(--serif);font-weight:900;font-size:20px;display:grid;place-items:center;
  box-shadow:inset 0 0 0 2px #fff3, 0 1px 0 var(--green-deep)}
.brand-name{font-family:var(--serif);font-weight:700;font-size:15px;letter-spacing:.02em}
.lang{display:flex;gap:2px;border:1.5px solid var(--ink);border-radius:2px;overflow:hidden}
.lang-btn{font-family:var(--sans);font-weight:700;font-size:13px;background:#0000;color:var(--ink-soft);
  border:0;padding:5px 11px;cursor:pointer;transition:.15s}
.lang-btn:hover{background:#0d5c461a}
.lang-btn.is-active{background:var(--ink);color:var(--paper)}

/* Intro */
.intro{margin:14px 0 20px;padding-top:6px}
.intro h1{font-family:var(--serif);font-weight:900;font-size:clamp(26px,6vw,40px);
  line-height:1.15;letter-spacing:-.01em;color:var(--green-deep);word-break:keep-all}
.lede{margin-top:10px;font-size:15px;color:var(--ink-soft);max-width:58ch;word-break:keep-all}

/* Slip card — the main paper ticket */
.slip{background:var(--paper);border:2px solid var(--ink);border-radius:3px;
  box-shadow:5px 6px 0 #1c1a1712;position:relative}
.slip::before{content:"";position:absolute;inset:5px;border:1px solid var(--rule);
  border-radius:2px;pointer-events:none}
.slip-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;
  padding:14px 18px 10px;border-bottom:2px dashed var(--rule)}
.slip-head .t{font-family:var(--serif);font-weight:700;font-size:16px}
.slip-head .no{font-family:var(--mono);font-size:11px;color:var(--ink-soft);letter-spacing:.08em}
.slip-body{padding:16px 18px}

/* Mode toggle */
.modes{display:flex;gap:0;border:1.5px solid var(--ink);border-radius:2px;overflow:hidden;margin-bottom:16px}
.mode-btn{flex:1;background:#0000;border:0;padding:10px 8px;cursor:pointer;font-family:var(--sans);
  text-align:center;transition:.15s;border-right:1.5px solid var(--ink)}
.mode-btn:last-child{border-right:0}
.mode-btn:hover{background:#0d5c4614}
.mode-btn.is-active{background:var(--green);color:var(--paper)}
.mode-btn .mt{display:flex;align-items:center;justify-content:center;gap:5px;font-weight:700;font-size:14px}
.mode-btn .ms{display:block;font-size:11px;opacity:.72;margin-top:1px}
.mode-btn .tag{flex:0 0 auto;font-size:10px;font-weight:700;line-height:1.5;background:var(--gold);color:#fff;
  padding:1px 5px;border-radius:2px}
.mode-btn.is-active .tag{background:#fff;color:var(--green-deep)}

/* Budget input row */
.budget{display:flex;gap:10px;align-items:stretch}
.field{flex:1;position:relative;display:flex;align-items:center;border:1.5px solid var(--ink);
  border-radius:2px;background:#fff;overflow:hidden}
.field .cur{padding:0 4px 0 14px;font-family:var(--mono);font-weight:700;font-size:20px;color:var(--ink-soft)}
.field input{flex:1;border:0;outline:0;background:#0000;font-family:var(--mono);font-weight:700;
  font-size:22px;padding:12px 12px 12px 2px;color:var(--ink);width:100%}
.field input::-webkit-outer-spin-button,.field input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.field input[type=number]{-moz-appearance:textfield}
.btn-go{border:0;background:var(--green);color:var(--paper);font-family:var(--serif);font-weight:900;
  font-size:17px;padding:0 26px;border-radius:2px;cursor:pointer;letter-spacing:.04em;white-space:nowrap;
  box-shadow:0 2px 0 var(--green-deep);transition:.12s}
.btn-go:hover{background:var(--green-deep);transform:translateY(1px);box-shadow:0 1px 0 var(--green-deep)}
.btn-go:active{transform:translateY(2px);box-shadow:none}

/* quick chips */
.chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:11px}
.chip{font-family:var(--mono);font-weight:700;font-size:13px;background:#0000;border:1.3px solid var(--rule);
  color:var(--ink-soft);padding:5px 12px;border-radius:20px;cursor:pointer;transition:.13s}
.chip:hover{border-color:var(--green);color:var(--green)}

/* error */
.err{margin-top:12px;font-family:var(--sans);font-weight:500;font-size:13.5px;color:var(--stamp);
  border-left:3px solid var(--stamp);padding:4px 0 4px 10px;display:none}
.err.show{display:block}

/* ===== Result ===== */
.result{margin-top:4px}
.result[hidden]{display:none}
.summary{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;padding:14px 0 4px;
  border-top:2px dashed var(--rule);margin-top:16px;font-family:var(--mono);font-size:13.5px;color:var(--ink-soft)}
.summary b{font-size:26px;color:var(--green-deep);font-weight:800}
.summary .sep{color:var(--rule)}

.block{margin-top:18px}
.block-label{display:flex;align-items:baseline;gap:8px;font-family:var(--serif);font-weight:700;font-size:14px;
  color:var(--ink);margin-bottom:9px}
.block-label .hint{font-family:var(--sans);font-weight:400;font-size:11.5px;color:var(--ink-soft)}
.balls{display:flex;flex-wrap:wrap;gap:8px}
.ball{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-family:var(--mono);
  font-weight:800;font-size:18px;position:relative;flex:0 0 auto}
.ball.banker{background:var(--stamp);color:#fff;box-shadow:inset 0 -2px 0 #0003}
.ball.leg{background:#fff;color:var(--ink);border:1.6px solid var(--ink)}
.ball.rolling{animation:flip .4s ease}
@keyframes flip{0%{transform:rotateX(90deg);opacity:0}100%{transform:rotateX(0);opacity:1}}

/* fill-in instruction */
.howto{margin-top:16px;background:#0d5c460e;border:1px solid var(--green-line);border-radius:3px;
  padding:11px 13px;font-size:13px;color:var(--green-deep);line-height:1.55}
.howto b{font-weight:700}

/* coverage */
.cover{margin-top:16px;padding:13px 15px;background:var(--ink);color:var(--paper);border-radius:3px}
.cover .big{font-family:var(--mono);font-weight:800;font-size:22px;letter-spacing:.01em;color:#fff}
.cover .big .frac{color:var(--gold)}
.cover .sub{font-size:12px;opacity:.72;margin-top:4px;font-family:var(--sans)}
.cover .bar{height:6px;background:#ffffff20;border-radius:3px;margin-top:10px;overflow:hidden}
.cover .bar > i{display:block;height:100%;background:var(--gold);border-radius:3px;transition:width .5s}

/* all bets */
.allbets{margin-top:14px;border:1px solid var(--rule);border-radius:3px;overflow:hidden}
.allbets > summary{cursor:pointer;list-style:none;padding:10px 14px;font-family:var(--sans);font-weight:700;
  font-size:13px;background:var(--paper-2);display:flex;justify-content:space-between;align-items:center}
.allbets > summary::-webkit-details-marker{display:none}
.allbets > summary .caret{transition:.2s}
.allbets[open] > summary .caret{transform:rotate(90deg)}
.betlist{max-height:340px;overflow:auto;padding:6px 0}
.betrow{display:flex;align-items:center;gap:10px;padding:5px 14px;font-family:var(--mono);font-size:14px;
  border-bottom:1px solid #cfc7b355}
.betrow:last-child{border:0}
.betrow .i{color:var(--ink-soft);font-size:11px;min-width:26px}
.betrow .nums{letter-spacing:.14em;font-weight:700}
.betrow .nums .bk{color:var(--stamp)}
.actions{display:flex;gap:10px;margin-top:16px}
.btn-sub{flex:1;border:1.5px solid var(--ink);background:#0000;color:var(--ink);font-family:var(--sans);
  font-weight:700;font-size:14px;padding:11px;border-radius:2px;cursor:pointer;transition:.13s}
.btn-sub:hover{background:var(--ink);color:var(--paper)}
.btn-sub.copied{background:var(--green);border-color:var(--green);color:#fff}

/* ===== Footer — stamped notice on newsprint ===== */
.footer{position:relative;z-index:1;max-width:760px;margin:0 auto;width:100%;
  padding:22px 20px 32px}
.footer-risk{position:relative;font-family:var(--serif);font-weight:600;font-size:12.5px;
  line-height:1.7;color:var(--stamp);background:#b231200a;word-break:keep-all;
  border:1px solid #b2312033;border-left:3px solid var(--stamp);border-radius:2px;
  padding:11px 14px 11px 40px}
.footer-risk::before{content:"⚠";position:absolute;left:13px;top:10px;font-size:16px;
  line-height:1.4;color:var(--stamp);font-family:var(--sans)}
.footer-meta{margin-top:11px;font-family:var(--mono);font-size:11px;letter-spacing:.05em;
  color:var(--ink-soft);opacity:.75;text-align:center}

@media(max-width:520px){
  .budget{flex-direction:column}
  .btn-go{padding:13px}
  .ball{width:38px;height:38px;font-size:16px}
  .mode-btn .ms{display:none}
  .footer-risk{font-size:12px;padding:10px 12px 10px 36px}
}