/* =====================================================================
   bullsandcowsgame.com — shared design system (2026-10 redesign)
   Light paper + amber by default, dark felt green when the device prefers.
   Legacy pages keep /style.css; only redesigned pages load this file.
   ===================================================================== */

:root{
  color-scheme: light dark;
  --paper:#FBF7EE; --card:#FFFFFF; --ink:#1E2420; --muted:#5A645F; --line:#E4DCCB;
  --tile:#F3EDE0; --tile-ink:#1E2420;
  --amber:#E8A030; --amber-hover:#D99220; --amber-ink:#1F1405; --amber-soft:#FCEBCB; --amber-text:#7A4D06;
  --green:#1E7A4C; --green-soft:#DDF1E5; --red:#A3302A; --red-soft:#F8E1DE;
  --bull:#1E7A4C; --bull-soft:#D4EEDD; --cow:#8A5A00; --cow-soft:#FBE7B8;
  --shadow:0 1px 2px rgba(30,36,32,.06), 0 8px 24px rgba(30,36,32,.06);
  --radius:16px;
  --font:'Bricolage Grotesque', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#14211C; --card:#1C2D26; --ink:#F3EEE2; --muted:#A9B5AE; --line:#2F4239;
    --tile:#26382F; --tile-ink:#F3EEE2;
    --amber:#F0A93A; --amber-hover:#FFBC55; --amber-ink:#1A1205; --amber-soft:#3A2E14; --amber-text:#F7C676;
    --green:#7FD9A6; --green-soft:#1D3A2A; --red:#F29A90; --red-soft:#3D2422;
    --bull:#7FD9A6; --bull-soft:#1F4430; --cow:#F7C676; --cow-soft:#4A3812;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.5}
a{color:inherit;text-underline-offset:3px}
button,input,select,textarea{font:inherit;color:inherit}
img{max-width:100%;height:auto}
[hidden]{display:none !important}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:6px}
.sr{position:absolute !important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.muted{color:var(--muted)}
.small{font-size:14px}
.mono{font-family:var(--mono)}

/* ---------- shell ---------- */
.site-header{max-width:1080px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;text-decoration:none;white-space:nowrap}
.brand-mark{display:block;width:32px;height:32px;flex:none}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.site-nav a{padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--muted);font-weight:600;font-size:15px}
.site-nav a:hover{color:var(--ink);background:var(--tile)}
.site-nav a[aria-current=page]{color:var(--ink);background:var(--tile)}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--card);cursor:pointer;align-items:center;justify-content:center}
.nav-more{position:relative}
.nav-more > button{padding:8px 12px;border-radius:10px;border:0;background:transparent;color:var(--muted);font-weight:600;font-size:15px;cursor:pointer}
.nav-more > button:hover{color:var(--ink);background:var(--tile)}
.nav-more-menu{position:absolute;right:0;top:calc(100% + 6px);min-width:220px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:6px;z-index:30}
.nav-more-menu a{display:block;padding:10px 12px}
@media (max-width:760px){
  .nav-toggle{display:inline-flex}
  .site-nav{display:none;position:absolute;left:12px;right:12px;top:64px;flex-direction:column;align-items:stretch;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:8px;z-index:40}
  .site-header{position:relative}
  .site-header.open .site-nav{display:flex}
  .site-nav a{padding:12px 14px;font-size:17px}
  .nav-more > button{display:none}
  .nav-more-menu{position:static;display:block !important;box-shadow:none;border:0;padding:0;min-width:0;border-top:1px solid var(--line);margin-top:6px;padding-top:6px;border-radius:0}
}
.page{max-width:1080px;margin:0 auto;padding:8px 16px 48px}
.site-footer{max-width:1080px;margin:0 auto;padding:24px 16px 40px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}
.site-footer nav{display:flex;flex-wrap:wrap;gap:6px 16px;margin-bottom:10px}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--ink)}
.footer-badge{display:inline-block;margin-top:10px}

/* ---------- type ---------- */
h1{font-size:clamp(32px,6vw,52px);line-height:1.04;letter-spacing:-.02em;margin:0 0 12px;font-weight:800}
h2{font-size:clamp(22px,3vw,28px);line-height:1.15;margin:0 0 12px;letter-spacing:-.01em}
h3{font-size:19px;margin:20px 0 8px}
.lede{font-size:19px;color:var(--muted);max-width:38em;margin:0 0 24px}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* ---------- controls ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 18px;border-radius:14px;border:2px solid var(--line);background:transparent;font-weight:700;cursor:pointer;text-decoration:none;color:var(--ink);line-height:1.1;text-align:center}
.btn:hover{background:var(--tile)}
.btn-primary{background:var(--amber);border-color:var(--amber);color:var(--amber-ink)}
.btn-primary:hover{background:var(--amber-hover);border-color:var(--amber-hover)}
.btn-strong{border-color:var(--ink)}
.btn-danger{border-color:var(--red);color:var(--red)}
.btn-danger:hover{background:var(--red-soft)}
.btn-lg{min-height:56px;font-size:18px;border-radius:16px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.icon-btn{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--card);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.icon-btn:hover{background:var(--tile)}
.icon-btn:disabled{opacity:.35;cursor:not-allowed}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
label.field-label{display:block;font-weight:700;margin:0 0 6px}
.input{width:100%;height:50px;border:2px solid var(--line);border-radius:12px;background:var(--card);padding:0 14px}
.input:focus{outline:none;border-color:var(--ink)}
textarea.input{height:auto;min-height:110px;padding:12px 14px;resize:vertical}
.switch{display:inline-flex;align-items:center;gap:10px;cursor:pointer;font-weight:600;font-size:15px;min-height:44px}
.switch input{appearance:none;-webkit-appearance:none;width:44px;height:26px;border-radius:13px;background:var(--line);position:relative;cursor:pointer;transition:background .15s;margin:0;flex:none}
.switch input::before{content:"";position:absolute;left:3px;top:3px;width:20px;height:20px;border-radius:50%;background:var(--card);transition:transform .15s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.switch input:checked{background:var(--green)}
.switch input:checked::before{transform:translateX(18px)}
.switch input:disabled{opacity:.55;cursor:not-allowed}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:14px;font-weight:700;white-space:nowrap;background:var(--tile);color:var(--muted)}
.pill.good{background:var(--green-soft);color:var(--green)}
.pill.bad{background:var(--red-soft);color:var(--red)}
.pill.warn{background:var(--amber-soft);color:var(--amber-text)}

/* ---------- cards & stats ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;align-items:start}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 8px;text-align:center}
.stat b{display:block;font-size:26px;line-height:1.1;font-weight:800}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:2px}
.stat.accent b{color:var(--amber-text)}
@media (max-width:380px){.stat b{font-size:22px}}

/* ---------- game board ---------- */
.game{max-width:520px;margin:0 auto;display:flex;flex-direction:column}
.game-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:4px 0 10px}
.game-title{display:flex;flex-direction:column;align-items:center;flex:1;min-width:0}
.game-title strong,.game-title h1{font-size:20px;line-height:1.2}
.game-title span{font-size:14px;color:var(--muted);font-family:var(--mono)}
.game-tools{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.legend{display:flex;gap:12px;font-size:14px;color:var(--muted);flex-wrap:wrap}
.board{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
.board-empty{padding:18px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:14px;font-size:15px}
.grow{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:7px 10px}
.grow .n{width:24px;font-family:var(--mono);color:var(--muted);font-size:14px;text-align:right;flex:none}
.grow .tag{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;width:44px;flex:none}
.digits{display:flex;gap:6px}
.d{width:40px;height:44px;border-radius:10px;background:var(--tile);color:var(--tile-ink);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:600;font-size:22px;flex:none}
.d.bull{background:var(--bull-soft);color:var(--bull);box-shadow:inset 0 0 0 2px var(--bull)}
.d.cow{background:var(--cow-soft);color:var(--cow);box-shadow:inset 0 0 0 2px var(--cow)}
.d.code{background:var(--amber);color:var(--amber-ink)}
.pegs{margin-left:auto;font-size:20px;letter-spacing:1px;white-space:nowrap;line-height:1}
.fb{margin-left:auto;display:flex;align-items:center;gap:8px;flex:0 1 auto;min-width:0}
.fb-text{font-size:13px;color:var(--muted);text-align:right;line-height:1.25;white-space:pre-line;min-width:0}
.pegbox{display:grid;grid-template-columns:repeat(2,20px);grid-template-rows:repeat(2,20px);gap:2px;padding:4px;border-radius:10px;background:var(--tile);flex:none}
.pegbox span{font-size:15px;line-height:20px;text-align:center}
.pegbox.sm{grid-template-columns:repeat(2,16px);grid-template-rows:repeat(2,16px);padding:3px;border-radius:8px}
.pegbox.sm span{font-size:12px;line-height:16px}
@media (max-width:380px){.fb-text{display:none}}
.counts{font-family:var(--mono);font-size:13px;color:var(--muted);white-space:nowrap;margin-left:auto}
.grow .pegs + .counts{margin-left:6px}
.grow.win{border-color:var(--bull);box-shadow:0 0 0 1px var(--bull)}
.grow.current{background:transparent;border-style:dashed}
.grow.current .d{background:var(--card);box-shadow:inset 0 0 0 2px var(--line)}
.grow.current .d.filled{box-shadow:inset 0 0 0 2px var(--ink)}
@media (max-width:380px){.d{width:34px;height:40px;font-size:19px}.pegs{font-size:17px}.grow{gap:7px;padding:6px 8px}}

.pad-dock{position:sticky;bottom:0;padding:12px 0 calc(8px + env(safe-area-inset-bottom));background:linear-gradient(to bottom,transparent,var(--paper) 16px);margin-top:4px;z-index:5}
.pad{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-top:8px}
.pad button{height:52px;border-radius:14px;border:0;background:var(--card);box-shadow:inset 0 0 0 1px var(--line),0 1px 0 var(--line);font-family:var(--mono);font-weight:600;font-size:24px;cursor:pointer;color:var(--ink);touch-action:manipulation}
.pad button:active{transform:translateY(1px)}
.pad button:disabled{opacity:.3;cursor:not-allowed}
.pad .go{background:var(--amber);box-shadow:none;color:var(--amber-ink);font-family:var(--font);font-size:19px;font-weight:800}
.pad .del{font-size:22px}
.inline-error{color:var(--red);font-weight:600;font-size:15px;margin:8px 0 0;min-height:0}

.result-strip{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px 14px;margin:6px 0 12px}
.result-strip strong{font-size:18px}

/* ---------- dialog / result sheet ---------- */
dialog.sheet{border:0;padding:0;background:transparent;color:var(--ink);max-width:min(480px,calc(100vw - 24px));width:100%;max-height:calc(100dvh - 24px)}
dialog.sheet::backdrop{background:rgba(10,16,13,.55);backdrop-filter:blur(2px)}
.sheet-inner{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:18px 18px 20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;overflow:auto;max-height:calc(100dvh - 24px)}
.sheet-head{display:flex;justify-content:space-between;align-items:center}
.sheet h2{font-size:38px;margin:0;line-height:1;font-weight:800}
.sheet .sub{margin:0;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.sheet .sub .digits{display:inline-flex;vertical-align:middle}
.sheet .sub .d{width:28px;height:32px;font-size:16px;border-radius:7px}
.share-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px 16px}
.share-card .top{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:8px}
.share-card .top strong{font-size:17px}
.share-card .top span{font-family:var(--mono);font-size:14px;color:var(--amber-text)}
.share-card pre{margin:0;font-family:inherit;font-size:20px;line-height:1.25;letter-spacing:1px;white-space:pre-wrap}
.share-card .url{font-family:var(--mono);font-size:13px;color:var(--muted);margin-top:8px}
.sheet .label{font-size:13px;color:var(--muted);margin:0 0 6px}
.sheet .nudge{font-size:15px;color:var(--muted);margin:0;text-align:center}
.sheet .countdown{text-align:center;font-size:15px;color:var(--muted)}
.sheet .countdown b{font-family:var(--mono);color:var(--ink);font-weight:600}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:11px 16px;border-radius:12px;font-weight:600;z-index:1000;max-width:calc(100vw - 32px);text-align:center;box-shadow:var(--shadow)}

/* ---------- celebration ---------- */
.emoji-rain{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:999}
.emoji-rain span{position:absolute;top:-10vh;animation:bcDrop linear forwards;will-change:transform}
@keyframes bcDrop{0%{transform:translate3d(0,-12vh,0) rotate(0)}100%{transform:translate3d(0,112vh,0) rotate(540deg)}}
@media (prefers-reduced-motion: reduce){.emoji-rain{display:none}}

/* ---------- tables, tabs ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card)}
table.data{width:100%;border-collapse:collapse}
table.data th,table.data td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
table.data th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--tile);font-weight:700;white-space:nowrap}
table.data tr:last-child td{border-bottom:0}
table.data td.num,table.data th.num{text-align:right;font-family:var(--mono)}
table.data tr.you td{background:var(--amber-soft)}
.tabs{display:inline-flex;gap:4px;background:var(--tile);padding:4px;border-radius:14px;margin-bottom:14px}
.tabs button{border:0;background:transparent;padding:10px 16px;border-radius:10px;font-weight:700;cursor:pointer;color:var(--muted);min-height:44px}
.tabs button[aria-selected=true]{background:var(--card);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}

/* ---------- hub cards (home "today" strip) ---------- */
.today{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin:0 0 12px}
.today a{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:0;padding:7px 10px;border-radius:12px;border:1px solid var(--line);background:var(--card);text-decoration:none;font-weight:700;font-size:15px;line-height:1.2;min-height:48px}
.today a > span:first-child{display:none}
.today a:hover{border-color:var(--ink)}
.today .tick{font-size:12px;font-weight:600;color:var(--muted)}
.today .tick.done{color:var(--green)}
.today a[aria-current=page]{border-color:var(--ink);background:var(--tile)}
@media (min-width:480px){.today a{flex-direction:row;align-items:center;gap:8px;font-size:16px}.today a > span:first-child{display:inline}.today .tick{margin-left:auto}}

/* ---------- content (prose) pages ---------- */
.prose{max-width:760px}
.prose .section,.prose section{margin:0 0 28px}
.prose p,.prose li{max-width:40em}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:4px 0}
.prose a{font-weight:600}
.callout{background:var(--amber-soft);border-radius:14px;padding:14px 16px;margin:14px 0}
.tips{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px;margin:10px 0}
.tip{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.kbd{font-family:var(--mono);background:var(--tile);border-radius:6px;padding:1px 6px}
.refs li{font-size:15px}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}
.toc{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:15px;margin:0 0 24px}
.example{font-family:var(--mono);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;line-height:1.7}
.game-h1{font-size:20px;line-height:1.2;margin:0;font-weight:800;letter-spacing:0}

/* ---------- leaderboard ---------- */
.lb-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:16px;align-items:start}
.lb-layout > *{min-width:0}
@media (max-width:860px){.lb-layout{grid-template-columns:minmax(0,1fr)}}
@media (max-width:480px){
  table.data th,table.data td{padding:10px 8px}
  table.data th{font-size:11px;letter-spacing:.04em}
  #lbBody td:nth-child(2) strong{display:inline-block;max-width:9.5em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}
}