@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root{font-family:'DM Sans',sans-serif;color:#17283a;background:#eaf0ed;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 90% 4%,#d5e6d9 0,transparent 32%),#eaf0ed}button{font:inherit;cursor:pointer}.app{max-width:1250px;margin:auto;padding:42px 28px 32px}.hero{position:relative;text-align:center;margin-bottom:34px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.22em;color:#418071}.hero h1{font-family:'Space Grotesk',sans-serif;font-size:clamp(40px,6vw,72px);line-height:1;margin:14px 0 12px;letter-spacing:-.065em}.hero h1 span{color:#ef805c}.hero p{margin:0;color:#607282;font-size:16px}.new-game{position:absolute;right:0;top:6px;border:1px solid #cad8d2;border-radius:12px;background:#fff;padding:11px 17px;color:#254b47;font-weight:800;box-shadow:0 3px 12px #2246380b}.new-game:hover{background:#f6faf8}.rules{display:flex;flex-wrap:wrap;justify-content:center;gap:11px;margin:0 auto 26px}.rules span{background:#f8faf8;border:1px solid #dce7e0;border-radius:100px;padding:9px 14px;color:#546876;font-size:12px;font-weight:700}.rules b{color:#38917c;margin-right:6px}.players{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.player{background:#fff;border:1px solid #dbe7e3;border-radius:24px;padding:25px;box-shadow:0 18px 45px #294d3a12}.player.orange{--accent:#e87856;--soft:#fff1e9;--dark:#a94729}.player.teal{--accent:#3c9b89;--soft:#e9f7f2;--dark:#1d705f}.player-header{display:flex;align-items:center;justify-content:space-between;gap:15px}.player-name{display:flex;align-items:center;gap:11px;font-family:'Space Grotesk',sans-serif;font-size:22px;font-weight:700}.player-icon{width:35px;height:35px;border-radius:11px;background:var(--soft);color:var(--accent);display:grid;place-items:center;font-size:20px}.turn-count{color:#7b8b95;font-size:13px;font-weight:700}.score-box{display:flex;align-items:center;justify-content:space-between;background:var(--soft);border-radius:18px;margin:22px 0 12px;padding:18px 22px}.score-label{font-size:12px;color:var(--dark);font-weight:800;letter-spacing:.12em;text-transform:uppercase}.score{font-family:'Space Grotesk',sans-serif;font-size:64px;font-weight:700;line-height:1;color:var(--dark);letter-spacing:-.07em}.goal{font-family:'Space Grotesk',sans-serif;font-weight:700;color:var(--accent);font-size:23px}.progress{height:8px;background:#edf2ef;border-radius:10px;overflow:hidden;margin:0 2px 23px}.progress-fill{height:100%;width:0;background:var(--accent);border-radius:10px;transition:width .25s}.queue-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.queue-heading strong{font-size:13px;letter-spacing:.1em;color:#596e79;text-transform:uppercase}.queue-heading small{color:#9caab0;font-weight:700}.upcoming{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;margin-bottom:13px}.upcoming span{display:grid;place-items:center;height:43px;background:#f4f7f6;border:1px solid #edf1ef;border-radius:10px;font-family:'Space Grotesk',sans-serif;font-weight:700;color:#7c9295}.choice-label{font-size:12px;font-weight:800;color:var(--accent);letter-spacing:.1em;text-transform:uppercase;margin:14px 0 9px}.choices{display:grid;gap:9px}.choice{display:flex;align-items:center;gap:10px;background:#fafcfb;border:1px solid #e7efeb;border-radius:14px;padding:10px}.choice-number{width:51px;height:51px;flex:none;display:grid;place-items:center;border-radius:11px;background:var(--soft);color:var(--dark);font-family:'Space Grotesk',sans-serif;font-size:25px;font-weight:700}.choice-ops{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;flex:1}.op{height:42px;border:1px solid #dce8e2;border-radius:9px;background:#fff;color:#284c4c;font-family:'Space Grotesk',sans-serif;font-size:22px;font-weight:700;transition:background .15s,transform .15s}.op:not(:disabled):hover{background:var(--soft);border-color:var(--accent);transform:translateY(-2px)}.op:disabled{cursor:not-allowed;opacity:.28}.player-bottom{min-height:47px;display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px}.message{color:#6d808b;font-size:13px;font-weight:600}.message.won{color:var(--dark);font-weight:800}.undo{border:1px solid #dce8e2;border-radius:10px;background:#fff;padding:9px 13px;color:#436268;font-weight:800;white-space:nowrap}.undo:not(:disabled):hover{background:var(--soft)}.undo:disabled{opacity:.4;cursor:not-allowed}.footer-note{text-align:center;color:#829391;font-size:12px;margin:25px 0 0}@media(max-width:850px){.players{grid-template-columns:1fr;max-width:580px;margin:auto}.new-game{position:static;margin-top:19px}.app{padding:30px 16px}.hero{margin-bottom:25px}}@media(max-width:420px){.player{padding:17px}.upcoming span{height:37px}.choice{padding:7px}.choice-number{width:43px;height:43px}.op{height:38px}.score{font-size:55px}}
.level-picker{display:inline-flex;align-items:center;gap:9px;margin:18px 12px 0 0;font-weight:800;color:#365e58}.level-picker input{width:66px;padding:9px;border:1px solid #cad8d2;border-radius:10px;background:#fff;font:inherit;color:#17283a;text-align:center}.goal{overflow-wrap:anywhere;text-align:right;max-width:55%;font-size:clamp(13px,2vw,23px)}.turn-count{text-align:right}
.app{padding-top:14px;padding-bottom:14px}.hero{margin-bottom:12px}.hero h1{font-size:clamp(34px,4vw,48px);margin:5px 0}.hero p{font-size:13px}.eyebrow{font-size:10px}.level-picker{margin-top:8px}.level-picker input{padding:5px}.new-game{top:0;padding:9px 13px}.round-status{min-height:19px;margin-top:6px;color:#418071;font-size:13px;font-weight:800}.rules{gap:6px;margin-bottom:12px}.rules span{padding:5px 10px}.player{padding:15px}.player-name{font-size:18px}.player-icon{width:29px;height:29px}.score-box{margin:10px 0 8px;padding:10px 16px}.score{font-size:48px}.progress{height:5px;margin-bottom:12px}.queue-heading{margin-bottom:6px}.upcoming{margin-bottom:7px}.upcoming span{height:34px}.choice-label{margin:7px 0 5px}.choices{gap:6px}.choice{padding:6px}.choice-number{width:39px;height:39px;font-size:21px}.op{height:36px}.player-bottom{margin-top:9px;min-height:36px}.player-actions{display:flex;gap:6px}.undo{padding:6px 9px;font-size:12px}.footer-note{margin-top:12px}.turn-count{font-size:11px}
@media(max-width:850px){.new-game{margin-top:7px}.hero{margin-bottom:12px}}@media(max-width:420px){.player-bottom{align-items:flex-start;flex-direction:column}.player-actions{width:100%}}
.queue-stack{width:min(100%,360px);margin:auto;padding:7px;background:#f0f5f2;border:1px solid #dce8e1;border-radius:14px}.upcoming{display:flex;flex-direction:column;align-items:flex-start;gap:2px;margin:0 0 3px;padding:0}.upcoming span{width:40px;height:25px;border-radius:5px;background:#fff;border:1px solid #d7e5de;color:#42675f;font-size:15px}.choice-label{margin:5px 0 5px;font-size:10px}.choices{gap:3px}.choice{padding:3px;background:#fff}.choice-number{width:40px;height:30px;border-radius:5px}.op{height:29px;font-size:18px}.queue-heading{width:min(100%,360px);margin:0 auto 5px}.player-bottom{margin-top:7px}
html,body{height:100%;overflow:hidden}.app{height:100dvh;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;gap:0;overflow:hidden}.players{min-height:0;height:100%}.player{min-height:0;height:100%;display:flex;flex-direction:column;overflow:hidden}.queue-stack{min-height:0;flex:1;display:flex;flex-direction:column;margin:0 auto}.upcoming{min-height:0;flex:1;display:grid;grid-template-columns:40px;grid-template-rows:repeat(8,minmax(0,1fr));gap:2px}.upcoming span{height:auto;min-height:0;font-size:clamp(10px,1.8vh,15px)}.queue-heading{flex:none}.player-bottom{flex:none}.player-tabs{display:none}
@media(max-width:850px){.app{grid-template-rows:auto auto auto minmax(0,1fr) auto;padding:8px 10px}.players{grid-template-columns:1fr;max-width:580px;width:100%;margin:auto}.player-tabs{display:flex;gap:5px;justify-content:center;margin-bottom:6px}.player-tabs button{border:1px solid #cad8d2;border-radius:8px;background:#fff;padding:5px 16px;color:#607282;font-weight:800}.player-tabs button.active{background:#254b47;color:#fff}.player{display:none}.player.active{display:flex}}
@media(max-height:680px){.app{padding-top:7px;padding-bottom:6px}.hero{margin-bottom:4px}.hero h1{font-size:31px;margin:2px 0}.hero p{display:none}.eyebrow{display:none}.rules{margin-bottom:5px}.rules span{padding:3px 8px}.score-box{margin:5px 0;padding:6px 12px}.progress{margin-bottom:6px}.queue-heading{margin-bottom:2px}.choice-label{margin:2px 0}.footer-note{display:none}.player{padding:10px}.player-bottom{margin-top:3px}.round-status{margin-top:2px}}
@media(max-height:540px){.rules{display:none}.hero h1{font-size:25px}.score-box{padding:3px 9px}.score-label{font-size:10px}.choice-number{height:24px}.op{height:24px;font-size:15px}.player-bottom{min-height:30px}.upcoming{gap:1px}}
.queue-list{display:grid;grid-template-rows:repeat(10,minmax(0,1fr));gap:3px;min-height:0;flex:1}.queue-row{display:grid;grid-template-columns:40px minmax(0,1fr);gap:8px;min-height:0}.queue-number{display:grid;place-items:center;width:40px;height:100%;min-height:0;border:1px solid #d7e5de;border-radius:6px;background:#fff;color:#42675f;font-family:'Space Grotesk',sans-serif;font-size:clamp(13px,2vh,19px);font-weight:700}.choice-ops{align-self:stretch;min-height:0}.choice-ops .op{height:100%;min-height:0;font-size:clamp(15px,2vh,20px)}
.stack-panel{display:grid;grid-template-columns:minmax(0,1fr) 150px;align-items:center;gap:8px;margin-bottom:7px;min-height:40px}.stack-values{display:flex;align-items:center;gap:4px;min-width:0;overflow:hidden}.stack-values strong{font-size:10px;white-space:nowrap;color:#607282}.stack-values>span:not(.stack-item){font-size:10px;white-space:nowrap}.stack-item{min-width:25px;max-width:78px;padding:6px 4px;border-radius:6px;background:#edf4f0;color:#315e56;font-size:12px;font-weight:800;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.stack-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:3px}.stack-actions .op{height:31px;font-size:17px}.enter-button{align-self:stretch;justify-self:start;min-width:77px;padding:0 10px;border:1px solid var(--accent);border-radius:6px;background:var(--soft);color:var(--dark);font-size:12px;font-weight:800}.enter-button:not(:disabled):hover{filter:brightness(.96)}.enter-button:disabled{opacity:.35;cursor:not-allowed}.score-box{margin-bottom:5px}.queue-heading{margin-bottom:3px}@media(max-height:680px){.stack-panel{min-height:31px;margin-bottom:3px}.stack-actions .op{height:27px}.stack-item{padding:3px 4px}}
.stack-values{overflow-x:auto;scrollbar-width:thin}.stack-item{flex:none;max-width:none}
.play-area{display:grid;grid-template-columns:58px minmax(0,1fr);gap:10px;min-height:0;flex:1;width:min(100%,360px);margin:0 auto}.queue-column,.rpn-side{display:flex;flex-direction:column;min-height:0}.column-heading{height:18px;flex:none;color:#607282;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.07em;white-space:nowrap}.column-heading small{font-size:9px;font-weight:600;letter-spacing:0;text-transform:none}.queue-list{min-height:0;flex:1;gap:3px}.queue-number{width:100%;height:100%;min-height:0;border-radius:6px;font-size:clamp(13px,2vh,19px)}button.queue-number{cursor:pointer;font:700 clamp(13px,2vh,19px) 'Space Grotesk',sans-serif}button.queue-number:not(:disabled):hover{border-color:var(--accent);background:var(--soft)}button.queue-number:disabled{cursor:not-allowed}.rpn-side{padding:0 0 1px}.stack-values{flex:1;min-height:0;display:flex;flex-direction:column;align-items:stretch;gap:4px;padding:6px;background:#f0f5f2;border:1px solid #dce8e1;border-radius:9px;overflow-y:auto;overflow-x:hidden}.stack-item{width:100%;max-width:100%;padding:6px 8px;text-align:left;overflow-wrap:anywhere;white-space:normal}.stack-actions{flex:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;margin-top:6px}.stack-actions .op{height:32px}.score-box{margin-bottom:6px}@media(max-height:680px){.stack-actions{margin-top:3px}.stack-actions .op{height:27px}.stack-item{padding:3px 6px}}
.rpn-side{justify-content:flex-end;align-items:center}.rpn-side .column-heading{height:auto;margin-bottom:4px;text-align:center}.rpn-side .stack-values{flex:0 1 auto;width:min(100%,170px);min-height:46px;max-height:calc(100% - 72px);align-items:center;justify-content:flex-start}.rpn-side .stack-item{width:100%;text-align:center}.rpn-side .stack-actions{width:100%;margin-top:4px}.stack-empty{margin:auto;color:#829391;font-size:12px;font-weight:700}
.rpn-side .stack-item:first-child{margin-top:auto}
.players{grid-template-columns:minmax(0,1fr) 135px minmax(0,1fr);gap:10px}.player:first-child{grid-column:1}.player:last-child{grid-column:3}.solution-panel{grid-column:2;min-height:0;height:100%;display:flex;flex-direction:column;align-items:stretch;padding:12px;background:#fff;border:1px solid #dbe7e3;border-radius:18px;overflow:hidden}.solution-panel h2{margin:0 0 8px;color:#418071;font-family:'Space Grotesk',sans-serif;font-size:16px;line-height:1.1;text-align:center}.play-area{width:100%;grid-template-columns:52px minmax(0,1fr) 68px;gap:6px}.path-column{display:flex;flex-direction:column;min-height:0}.path-list{display:flex;flex-direction:column;align-items:center;gap:3px;min-height:0;overflow-y:auto;scrollbar-width:thin}.path-column .path-list{flex:1;padding:5px 2px;background:#f4f7f6;border-radius:8px}.path-entry{display:block;flex:none;width:100%;min-height:22px;padding:2px 4px;border-radius:5px;background:#fff;border:1px solid #dce8e2;color:#365e58;font-family:'Space Grotesk',sans-serif;font-size:14px;font-weight:700;text-align:center}.path-empty{color:#9caab0;font-size:10px;text-align:center}.solution-panel .path-list{flex:1}.solution-panel .path-entry{width:64px}.path-column .column-heading{text-align:center;font-size:9px}
@media(max-width:850px){.players{grid-template-columns:minmax(0,1fr) 105px;gap:6px}.player.active{grid-column:1;grid-row:1}.solution-panel{grid-column:2;grid-row:1;padding:7px}.solution-panel h2{font-size:12px}.solution-panel .path-entry{width:55px}.play-area{grid-template-columns:42px minmax(0,1fr) 52px;gap:4px}.path-entry{font-size:12px}}
.players{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.player:first-child{grid-column:1}.player:last-child{grid-column:2}.play-area{grid-template-columns:58px minmax(0,1fr);gap:10px;width:min(100%,360px)}.results-button{position:absolute;left:0;top:0;border:1px solid #cad8d2;border-radius:12px;background:#fff;padding:9px 13px;color:#254b47;font-weight:800}.results-button:not(:disabled):hover{background:#f0f7f2}.results-button:disabled{opacity:.4;cursor:not-allowed}
@media(max-width:850px){.players{grid-template-columns:1fr;gap:0}.player.active{grid-column:1;grid-row:1}.play-area{grid-template-columns:58px minmax(0,1fr);gap:10px}.results-button{position:static;margin:7px 5px 0 0}}
.app{grid-template-rows:auto minmax(0,1fr)}@media(max-width:850px){.app{grid-template-rows:auto auto minmax(0,1fr)}}
.target-display{margin:2px auto 4px;max-width:100%;color:#e87856;font-family:'Space Grotesk',sans-serif;font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.05;letter-spacing:-.04em;overflow-wrap:anywhere}.round-status{min-height:0}
.level-picker span{display:inline-block;min-width:36px;padding:5px 10px;border:1px solid #cad8d2;border-radius:10px;background:#fff;text-align:center}
html{-webkit-text-size-adjust:100%}button{touch-action:manipulation}.app{height:100vh;height:100dvh;padding-left:max(10px,env(safe-area-inset-left));padding-right:max(10px,env(safe-area-inset-right))}
@media(min-width:650px) and (max-width:850px){.app{grid-template-rows:auto minmax(0,1fr)}.player-tabs{display:none}.players{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-width:none;width:100%}.player,.player.active{display:flex}.player:first-child,.player:first-child.active{grid-column:1;grid-row:1}.player:last-child,.player:last-child.active{grid-column:2;grid-row:1}.play-area{width:100%;grid-template-columns:50px minmax(0,1fr);gap:7px}.player{padding:12px}}
@media(pointer:coarse){.results-button,.undo,.player-tabs button{min-height:44px}.stack-actions .op{height:44px}.player-bottom{min-height:44px}.queue-number{touch-action:manipulation}}
@media(pointer:coarse) and (max-height:700px){.hero p{display:none}.hero h1{font-size:30px}.stack-actions .op{height:40px}.player{padding:9px}}
.player.success{border:3px solid #2f9d69;box-shadow:0 12px 30px rgba(47,157,105,.18)}.player.failure{border:3px solid #d65353;box-shadow:0 12px 30px rgba(214,83,83,.14)}.message.success{color:#18794e;font-weight:800}.message.failure{color:#b4232f;font-weight:800}
.keyboard-help{max-width:245px;color:#6d808b;font-size:10px;font-weight:700;line-height:1.25;text-align:right}.player-header{flex:none}@media(max-width:650px){.keyboard-help{font-size:9px;max-width:190px}}@media(max-height:620px){.keyboard-help{display:none}}
.player{--control-height:38px}.play-area{grid-template-columns:2fr 2fr 4fr;grid-template-rows:minmax(0,1fr) auto;gap:4px;width:100%}.queue-column{grid-column:2;grid-row:1}.rpn-side{grid-column:3;grid-row:1}.queue-list{grid-template-rows:repeat(8,var(--control-height));align-content:end}.queue-number{justify-self:center;width:50%;height:var(--control-height)}.control-grid{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:4px;margin-top:6px}.control-cell{display:grid;grid-template-rows:auto 17px;gap:2px;min-width:0}.control-button{width:100%;height:var(--control-height);min-width:0;padding:0 2px;border:1px solid #dce8e2;border-radius:8px;background:#fff;color:#284c4c;font-family:'Space Grotesk',sans-serif;font-size:20px;font-weight:700}.control-button:not(:disabled):hover{border-color:var(--accent);background:var(--soft)}.control-button:disabled{cursor:not-allowed;opacity:.28}.number-control{border-color:#d7e5de;background:#fff;color:#42675f}.utility-control{font-family:'DM Sans',sans-serif;font-size:10px;line-height:1.05}.surrender-control{color:#a33c42}.control-cell kbd{display:block;color:#607282;font-family:'DM Sans',sans-serif;font-size:11px;font-weight:800;text-align:center}.rpn-side .stack-values{width:100%;max-height:100%}@media(pointer:coarse){.player{--control-height:44px}}@media(max-height:620px){.player{--control-height:32px}.control-grid{margin-top:3px}.control-cell{grid-template-rows:auto 14px}.control-cell kbd{font-size:9px}}
.players{height:auto;align-self:start;align-items:start}.player,.player.active{height:auto;align-self:start}.play-area{flex:none}.queue-list{align-content:start}.app{grid-template-rows:auto auto}
@media(max-width:850px){.app{grid-template-rows:auto auto auto}.players{height:auto}}
@media(min-width:650px) and (max-width:850px){.app{grid-template-rows:auto auto}.players{height:auto}}
.player{--control-height:44px}.utility-column{grid-column:1;grid-row:1/3;display:flex;flex-direction:column;gap:10px;align-self:start}.utility-column .control-cell{grid-template-rows:auto 20px}.utility-column .control-button{font-size:13px}.control-grid{grid-column:2/4;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}.control-button{font-size:24px}.control-cell kbd{font-size:13px}.queue-number{font-size:clamp(17px,2.2vh,23px)}.stack-item{font-size:18px;padding:8px}.stack-empty{font-size:15px}@media(pointer:coarse){.player{--control-height:48px}}@media(max-height:620px){.player{--control-height:36px}.utility-column{gap:5px}.utility-column .control-cell{grid-template-rows:auto 15px}.utility-column .control-button{font-size:10px}.control-button{font-size:20px}.control-cell kbd{font-size:10px}.stack-item{font-size:15px;padding:4px}}

/* Compact match header and larger controls inside the player cards. */
.hero{margin-bottom:8px}.title-row{display:flex;align-items:center;justify-content:center;gap:20px;min-width:0}.title-row h1{flex:none;margin:0;font-size:clamp(34px,4vw,50px)}.title-row .level-picker{flex:none;margin:0;font-size:18px}.target-label{display:flex;flex:none;align-items:center;gap:8px;color:#365e58;font-size:18px;font-weight:800}.target-label #target-display{color:#e87856;font-family:'Space Grotesk',sans-serif;font-size:clamp(30px,3.5vw,44px);font-weight:700;line-height:1}.hero p{margin-top:2px}.player{--control-height:48px}.queue-number,button.queue-number{font-size:clamp(21px,2.6vh,28px)}.control-button{font-size:29px}.utility-column .control-button{font-size:15px}.control-cell kbd{font-size:15px}.stack-item{font-size:23px;padding:9px}.rpn-side .stack-values{min-height:58px}
@media(pointer:coarse){.player{--control-height:52px}}
@media(max-width:650px){.title-row{gap:8px}.title-row h1{font-size:27px}.title-row .level-picker,.target-label{font-size:14px}.target-label #target-display{font-size:28px}}
@media(max-height:700px){.player{--control-height:40px}.queue-number,button.queue-number{font-size:20px}.control-button{font-size:23px}.stack-item{font-size:18px;padding:5px}.rpn-side .stack-values{min-height:45px}}
@media(max-height:560px){.title-row h1{font-size:25px}.title-row .level-picker,.target-label{font-size:13px}.target-label #target-display{font-size:25px}.player{--control-height:34px}}