/* NVIDIAddict — Backgammon (2026-10-03). Every rule is scoped under .ag-backgammon. */
.ag-backgammon {
  --bg-frame: #3A2E22; --bg-frame-line: #4D3E2E;
  --bg-felt1: #173623; --bg-felt2: #1D4029;
  --bg-pa1: #86BA2C; --bg-pa2: #5E8C16;
  --bg-pb1: #D8B57C; --bg-pb2: #A9834B;
  --bg-bar: #2C2219; --bg-tray: #241C14;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ag-backgammon {
    --bg-frame: #191E1A; --bg-frame-line: #2A332C;
    --bg-felt1: #11251A; --bg-felt2: #163020;
    --bg-pa1: #7BAF26; --bg-pa2: #4F7812;
    --bg-pb1: #C49C60; --bg-pb2: #8B6838;
    --bg-bar: #0E1310; --bg-tray: #0B0F0C;
  }
}
:root[data-theme="dark"] .ag-backgammon {
  --bg-frame: #191E1A; --bg-frame-line: #2A332C;
  --bg-felt1: #11251A; --bg-felt2: #163020;
  --bg-pa1: #7BAF26; --bg-pa2: #4F7812;
  --bg-pb1: #C49C60; --bg-pb2: #8B6838;
  --bg-bar: #0E1310; --bg-tray: #0B0F0C;
}

.ag-backgammon .bg { display: grid; gap: 18px; min-width: 0; }
.ag-backgammon .bg-main { position: relative; display: grid; grid-template-columns: minmax(0, 1fr); gap: 6px; grid-template-areas: "opp" "board" "you" "line" "acts"; min-width: 0; }
.ag-backgammon .bg-opp { grid-area: opp; }
.ag-backgammon .bg-you { grid-area: you; }
.ag-backgammon .bg-info { grid-area: info; display: none; }
.ag-backgammon .bg-line { grid-area: line; }
.ag-backgammon .bg-acts { grid-area: acts; }
.ag-backgammon .bg-boardwrap { grid-area: board; position: relative; width: var(--bw, 100%); justify-self: start; }

/* ---- board ---- */
.ag-backgammon .bg-svg { display: block; width: 100%; height: auto; touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; -webkit-tap-highlight-color: transparent; border-radius: 12px; box-shadow: 0 14px 34px -18px rgba(0, 0, 0, .7); }
.ag-backgammon .bg-frame { fill: var(--bg-frame); stroke: var(--bg-frame-line); stroke-width: 1.5; }
.ag-backgammon .bg-felt { fill: url(#bg-felt); }
.ag-backgammon .bg-barr { fill: var(--bg-bar); }
.ag-backgammon .bg-tray { fill: var(--bg-tray); stroke: rgba(255, 255, 255, .07); stroke-width: 1; }
.ag-backgammon .bg-pt { stroke: rgba(0, 0, 0, .18); stroke-width: .8; }

.ag-backgammon .bg-ck { will-change: transform; }
.ag-backgammon .bg-ck-sh { fill: rgba(0, 0, 0, .38); }
.ag-backgammon .bg-ck.h .bg-ck-base { fill: url(#bg-gh); stroke: #857B62; stroke-width: 1.2; }
.ag-backgammon .bg-ck.h .bg-ck-top { fill: url(#bg-gh2); stroke: rgba(140, 128, 100, .55); stroke-width: .9; }
.ag-backgammon .bg-ck.h .bg-ck-ring { fill: none; stroke: rgba(140, 128, 100, .38); stroke-width: .8; }
.ag-backgammon .bg-ck.b .bg-ck-base { fill: url(#bg-gb); stroke: #050706; stroke-width: 1.2; }
.ag-backgammon .bg-ck.b .bg-ck-top { fill: url(#bg-gb2); stroke: rgba(175, 190, 180, .32); stroke-width: .9; }
.ag-backgammon .bg-ck.b .bg-ck-ring { fill: none; stroke: rgba(175, 190, 180, .2); stroke-width: .8; }
.ag-backgammon .bg-ck-n { font: 700 16px var(--sans); text-anchor: middle; pointer-events: none; }
.ag-backgammon .bg-ck.h .bg-ck-n { fill: #2A2A22; }
.ag-backgammon .bg-ck.b .bg-ck-n { fill: #F1ECDD; }
.ag-backgammon .bg-ck.off .bg-ck-sh, .ag-backgammon .bg-ck.off .bg-ck-ring, .ag-backgammon .bg-ck.off .bg-ck-n { display: none; }
.ag-backgammon .bg-ck.can .bg-ck-base { stroke: var(--accent); stroke-width: 2.6; }
.ag-backgammon .bg-ck.sel .bg-ck-base { stroke: var(--accent); stroke-width: 3.4; }
.ag-backgammon .bg-ck.sel { filter: drop-shadow(0 0 5px rgba(143, 209, 26, .65)); }
.ag-backgammon .bg-ck.last .bg-ck-base { stroke: var(--gold); stroke-width: 2.6; }
.ag-backgammon .bg-ck.fly, .ag-backgammon .bg-ck.drag { pointer-events: none; filter: drop-shadow(0 6px 6px rgba(0, 0, 0, .45)); }

.ag-backgammon .bg-die rect { stroke-width: 1.2; }
.ag-backgammon .bg-die.h rect { fill: #F8F4E9; stroke: #9C9278; }
.ag-backgammon .bg-die.h circle { fill: #191D1A; }
.ag-backgammon .bg-die.b rect { fill: #2B322E; stroke: #070908; }
.ag-backgammon .bg-die.b circle { fill: #F1ECDD; }
.ag-backgammon .bg-die { filter: drop-shadow(0 2px 2px rgba(0, 0, 0, .4)); transition: opacity .18s; }
.ag-backgammon .bg-die.used { opacity: .3; filter: none; }
.ag-backgammon .bg-die-in { transform-box: fill-box; transform-origin: center; }
.ag-backgammon .bg-roll-hint { font: 600 13px var(--sans); fill: rgba(241, 236, 221, .55); text-anchor: middle; pointer-events: none; }

.ag-backgammon .bg-cubeg rect { fill: #F4EEDB; stroke: var(--gold); stroke-width: 2.2; }
.ag-backgammon .bg-cubeg text { font: 800 19px var(--display); fill: #1A1305; text-anchor: middle; }
.ag-backgammon .bg-cubeg text.two { font-size: 15.5px; }
.ag-backgammon .bg-cubeg.offer rect { stroke: var(--accent); stroke-width: 3.2; }
.ag-backgammon .bg-cubeg.dim { opacity: .35; }

.ag-backgammon .bg-dst { fill: var(--accent); opacity: .34; pointer-events: none; }
.ag-backgammon .bg-dst.hov { opacity: .55; }
.ag-backgammon .bg-dst-ring { fill: rgba(143, 209, 26, .2); stroke: var(--accent); stroke-width: 2.6; stroke-dasharray: 5 3; pointer-events: none; }
.ag-backgammon .bg-dst-ring.hit { stroke: var(--gold); fill: rgba(227, 179, 74, .22); }
.ag-backgammon .bg-dst-ring.hov { stroke-dasharray: none; }

/* ---- player bars ---- */
.ag-backgammon .bg-pbar { display: flex; align-items: center; gap: 10px; min-height: 46px; padding: 0 2px; min-width: 0; }
.ag-backgammon .bg-av { width: 32px; height: 32px; border-radius: 50%; flex: 0 0 auto; box-shadow: 0 1px 2px rgba(0, 0, 0, .4); transition: box-shadow .2s; }
.ag-backgammon .bg-av.you { background: radial-gradient(circle at 38% 32%, #FFFFFF, #EFE8D7 55%, #C9BFA4); border: 1px solid #857B62; }
.ag-backgammon .bg-av.bot { background: radial-gradient(circle at 38% 32%, #5A645E, #2C332F 55%, #161A18); border: 1px solid #050706; }
.ag-backgammon .bg-pbar.turn .bg-av { box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--accent); }
.ag-backgammon .bg-who { flex: 1 1 auto; min-width: 0; }
.ag-backgammon .bg-nm { display: flex; align-items: baseline; gap: 7px; font-size: 14.5px; line-height: 1.2; white-space: nowrap; }
.ag-backgammon .bg-rt { font: 500 12px var(--mono); color: var(--muted); }
.ag-backgammon .bg-pip { font: 500 12px var(--mono); color: var(--muted); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ag-backgammon .bg-score:empty { display: none; }
.ag-backgammon .bg-score b { display: block; min-width: 40px; text-align: center; font: 800 24px/1 var(--display); padding: 7px 10px; border-radius: 10px; background: var(--raised); border: 1px solid var(--line); }
.ag-backgammon .bg-dots { display: none; gap: 3px; align-items: center; }
.ag-backgammon .bg.thinking .bg-dots { display: inline-flex; }
.ag-backgammon .bg-dots i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); animation: bgdot 1.1s infinite ease-in-out; }
.ag-backgammon .bg-dots i:nth-child(2) { animation-delay: .15s; }
.ag-backgammon .bg-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes bgdot { 0%, 80%, 100% { opacity: .25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }

/* ---- status line ---- */
.ag-backgammon .bg-line { margin: 0; min-height: 38px; display: flex; flex-direction: column; justify-content: center; text-align: center; font-size: 13.5px; line-height: 1.35; color: var(--ink); overflow: hidden; }
.ag-backgammon .bg-note { display: block; font-style: normal; color: var(--gold); }

/* ---- actions ---- */
.ag-backgammon .bg-acts { display: grid; grid-template-columns: 1fr 1fr 1.7fr 1fr; gap: 6px; }
.ag-backgammon .bg-act { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; padding: 6px 2px 5px; min-height: 54px; border: 1px solid var(--line); background: var(--raised); color: var(--ink); border-radius: 12px; font: 600 12px/1.1 var(--sans); cursor: pointer; transition: transform .08s, background .15s, opacity .15s; -webkit-tap-highlight-color: transparent; }
.ag-backgammon .bg-act:active:not(:disabled) { transform: scale(.96); }
.ag-backgammon .bg-act svg { width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.ag-backgammon .bg-act:disabled { opacity: .38; cursor: default; }
.ag-backgammon .bg-go { flex-direction: row; gap: 8px; font: 700 18px var(--sans); background: var(--raised); }
.ag-backgammon .bg-go.ready { background: var(--accent); color: var(--accent-ink); border-color: transparent; box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--accent) 80%, transparent); }
.ag-backgammon .bg-go:disabled { opacity: 1; color: var(--muted); }
.ag-backgammon .bg-go.wait, .ag-backgammon .bg-go.long { font-size: 15px; gap: 6px; }
.ag-backgammon .bg-go.long .bg-go-ic svg { width: 20px; height: 20px; }
.ag-backgammon .bg-go-ic:empty { display: none; }
.ag-backgammon .bg-go-ic svg { width: 24px; height: 24px; }
.ag-backgammon .bg-dbl.pass:not(:disabled) { border-color: var(--crit); color: var(--crit); }
.ag-backgammon .bg-dbl:not(:disabled):not(.pass) { border-color: color-mix(in srgb, var(--gold) 60%, var(--line)); }
.ag-backgammon .bg-dbl.pass svg { display: none; }
.ag-backgammon .bg-dbl.pass span { font-size: 16px; font-weight: 700; }

/* ---- desk / landscape: board left, controls in a column on the right ---- */
.ag-backgammon .bg[data-mode="desk"] .bg-main { grid-template-columns: var(--bw) minmax(0, var(--sw)); grid-template-rows: auto auto minmax(0, 1fr) auto auto; grid-template-areas: "board opp" "board info" "board line" "board acts" "board you"; column-gap: 16px; row-gap: 10px; justify-content: center; align-items: start; }
.ag-backgammon .bg[data-mode="desk"] .bg-boardwrap { grid-row: 1 / -1; }
.ag-backgammon .bg[data-mode="desk"] .bg-info { display: block; }
.ag-backgammon .bg[data-mode="desk"] .bg-line { justify-content: flex-start; text-align: left; align-self: stretch; min-height: 60px; font-size: 14.5px; padding-top: 4px; }
.ag-backgammon .bg[data-mode="desk"] .bg-acts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ag-backgammon .bg[data-mode="desk"] .bg-go { grid-column: 1 / -1; order: -1; min-height: 64px; font-size: 20px; }
.ag-backgammon .bg[data-mode="desk"] .bg-you { align-self: end; }
.ag-backgammon .bg[data-mode="desk"][data-short="1"] .bg-info { display: none; }
.ag-backgammon .bg[data-mode="desk"][data-short="1"] .bg-main { row-gap: 8px; }
.ag-backgammon .bg[data-mode="desk"][data-short="1"] .bg-line { min-height: 40px; }
.ag-backgammon .bg-match { display: grid; gap: 2px; padding: 12px 14px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); }
.ag-backgammon .bg-mi-t { font: 600 10.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.ag-backgammon .bg-mi-sc { display: flex; align-items: baseline; gap: 10px; font: 800 34px/1.05 var(--display); }
.ag-backgammon .bg-mi-sc i { font-style: normal; color: var(--muted); font-weight: 400; }
.ag-backgammon .bg-mi-s { font-size: 12.5px; color: var(--muted); }

/* ---- sheets ---- */
.ag-backgammon .bg-sheet { position: absolute; inset: -4px calc(-1 * var(--bleed, 4px)); z-index: 9; display: flex; align-items: center; justify-content: center; padding: 10px; background: rgba(5, 8, 5, .6); border-radius: 14px; }
.ag-backgammon .bg-card { width: min(100%, 440px); max-height: 100%; overflow: auto; background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 14px; padding: 14px; box-shadow: 0 18px 50px rgba(0, 0, 0, .5); display: grid; gap: 10px; overscroll-behavior: contain; }
.ag-backgammon .bg-card-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.ag-backgammon .bg-card h4 { font-size: 21px; }
.ag-backgammon .bg-x { border: 0; background: transparent; font-size: 24px; line-height: 1; color: var(--muted); cursor: pointer; width: 44px; height: 44px; border-radius: 8px; flex: 0 0 auto; }
.ag-backgammon .bg-x:hover { background: var(--raised); }
.ag-backgammon .bg-reason { margin: -6px 0 0; color: var(--muted); font-size: 13px; }
.ag-backgammon .bg-res.win h4 { color: var(--good); }
.ag-backgammon .bg-res.loss h4 { color: var(--crit); }
.ag-backgammon .bg-sc { display: flex; align-items: baseline; justify-content: center; gap: 12px; font-size: 14px; color: var(--muted); }
.ag-backgammon .bg-sc b { font: 800 40px/1 var(--display); color: var(--ink); }
.ag-backgammon .bg-sc i { font-style: normal; font-size: 26px; }
.ag-backgammon .bg-sc-sub { text-align: center; margin: -4px 0 0; }
.ag-backgammon .bg-rc { display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px; font-size: 18px; color: var(--muted); }
.ag-backgammon .bg-rc b { font-size: 34px; color: var(--ink); font-family: var(--display); }
.ag-backgammon .bg-rc em { font-style: normal; font: 700 16px var(--mono); }
.ag-backgammon .bg-rc em.up, .ag-backgammon .bg-stats .up, .ag-backgammon .bg-games .up { color: var(--good); }
.ag-backgammon .bg-rc em.dn, .ag-backgammon .bg-stats .dn, .ag-backgammon .bg-games .dn { color: var(--crit); }
.ag-backgammon .bg-xp { margin-left: auto; font: 700 13px var(--mono); color: var(--accent); }
.ag-backgammon .bg-streak { margin: 0; color: var(--gold); font-weight: 700; }
.ag-backgammon .bg-take { margin: 0; font-size: 13.5px; padding: 10px 12px; border-radius: 8px; background: var(--accent-soft); border-left: 3px solid var(--accent); }
.ag-backgammon .bg-res-acts { display: flex; flex-wrap: wrap; gap: 8px; }
.ag-backgammon .bg-res-acts .btn { flex: 1 1 auto; justify-content: center; padding: 12px; min-height: 46px; font-size: 15px; }
.ag-backgammon .bg-lvls { display: grid; gap: 6px; }
.ag-backgammon .bg-lvl { display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; gap: 10px; align-items: center; text-align: left; border: 1px solid var(--line); background: var(--raised); color: var(--ink); border-radius: 11px; padding: 8px 10px; min-height: 48px; cursor: pointer; font: inherit; }
.ag-backgammon .bg-lvl[aria-checked="true"] { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); background: var(--accent-soft); }
.ag-backgammon .bg-lvl b { font-size: 14.5px; }
.ag-backgammon .bg-lvl b i { font-style: normal; font: 500 12px var(--mono); color: var(--muted); margin-left: 3px; }
.ag-backgammon .bg-lvl b em { font-style: normal; font: 600 9.5px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-left: 6px; }
.ag-backgammon .bg-lvl small { display: block; color: var(--muted); font-size: 12px; line-height: 1.35; margin-top: 1px; }
.ag-backgammon .bg-lvl:not([aria-checked="true"]) small { display: none; }
.ag-backgammon .bg-lvl-rec { font: 500 11px var(--mono); color: var(--muted); }
.ag-backgammon .bg-lenrow { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; }
.ag-backgammon .bg-len button { min-width: 44px; min-height: 40px; padding: 6px 12px; }
.ag-backgammon .bg-warn { color: var(--warn); margin: 0; text-align: center; }
.ag-backgammon .bg-play { justify-content: center; font-size: 16px; padding: 13px; border-radius: 11px; min-height: 48px; }
.ag-backgammon .bg[data-mode="port"] .bg-sheet[data-kind="setup"] { position: fixed; inset: 0; z-index: 60; align-items: flex-end; padding: 0; border-radius: 0; }
.ag-backgammon .bg[data-mode="port"] .bg-sheet[data-kind="setup"] .bg-card { width: 100%; max-width: 560px; max-height: 88vh; border-radius: 18px 18px 0 0; padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); }

/* ---- panels below the board ---- */
.ag-backgammon .bg-side { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); align-items: start; }
.ag-backgammon .bg-big { font: 800 26px/1 var(--display); }
.ag-backgammon .bg-spark { width: 100%; height: 44px; display: block; margin-bottom: 4px; }
.ag-backgammon .bg-spark polyline { fill: none; stroke: var(--accent); stroke-width: 1.8; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.ag-backgammon .bg-stats { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12.5px; color: var(--muted); }
.ag-backgammon .bg-stats b { color: var(--ink); font-family: var(--mono); }
.ag-backgammon .bg-recs { display: grid; gap: 2px; margin-top: 10px; font-size: 12.5px; color: var(--muted); }
.ag-backgammon .bg-recs b { color: var(--ink); font-weight: 600; }
.ag-backgammon .bg-games { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; font-size: 13px; }
.ag-backgammon .bg-games li { display: grid; grid-template-columns: 64px 1fr auto; gap: 8px; color: var(--muted); }
.ag-backgammon .bg-opts { display: grid; gap: 10px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.ag-backgammon .bg-switch { display: flex; align-items: center; gap: 10px; font-size: 13.5px; cursor: pointer; min-height: 44px; }
.ag-backgammon .bg-switch input { width: 20px; height: 20px; accent-color: var(--accent); flex: 0 0 auto; }
.ag-backgammon .bg-resign { justify-self: start; min-height: 40px; }
.ag-backgammon .bg-resign.armed { background: var(--crit); color: #fff; border-color: transparent; }
.ag-backgammon .bg-rules summary { cursor: pointer; font-size: 13.5px; color: var(--muted); min-height: 32px; }
.ag-backgammon .bg-rules ul { margin: 6px 0 0; padding-left: 18px; display: grid; gap: 6px; font-size: 13px; line-height: 1.45; }

@media (prefers-reduced-motion: reduce) { .ag-backgammon .bg-dots i { animation: none; opacity: .8; } }