:root{--navy:#06142f;--navy-2:#0c2556;--blue:#2d6cf4;--blue-dark:#1744a5;--gold:#ffd34e;--cream:#fff8db;--text:#f8faff;--muted:#cbd5ee;--green:#35c779;--red:#ef6767;--line:rgba(255,255,255,.16);--light-square:#d9e2f2;--dark-square:#45699d;--panel:rgba(6,20,47,.96);--shadow:0 22px 60px rgba(0,0,0,.28)}
*{box-sizing:border-box}html{background:#020713}body{margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at top,#1e4e9e 0,#081735 42%,#020713 100%);color:var(--text)}button,input,select{font:inherit}.hidden{display:none!important}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.app{width:min(1500px,100%);margin:0 auto;padding:14px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:12px 16px;border:1px solid var(--line);border-radius:18px;background:rgba(5,16,44,.94);box-shadow:var(--shadow)}.brand{display:flex;align-items:center;gap:12px}.brand img{width:52px;height:52px;object-fit:contain}.brand strong,.brand small{display:block}.brand small{margin-top:2px;color:var(--muted)}.prototype-badge{display:inline-flex;align-items:center;gap:7px;margin-left:8px;padding:6px 10px;border-radius:999px;background:var(--gold);color:#302600;font-size:.76rem;font-weight:900;letter-spacing:.06em;text-transform:uppercase}.top-actions,.actions{display:flex;gap:9px;flex-wrap:wrap}.btn{min-height:44px;padding:10px 15px;border:1px solid var(--line);border-radius:12px;background:#203a78;color:#fff;font-weight:850;cursor:pointer;text-decoration:none}.btn:hover,.btn:focus-visible{filter:brightness(1.12);outline:3px solid rgba(255,211,78,.5);outline-offset:2px}.btn.primary{background:linear-gradient(#3477ff,#1744a5)}.btn.gold{background:linear-gradient(#fff0a4,var(--gold));color:#2e2600}.btn.danger{background:#722a3b}.btn:disabled{cursor:not-allowed;opacity:.5;filter:none}.hero{max-width:900px;margin:0 auto;text-align:center;padding:46px 16px 26px}.hero-mark{font-size:clamp(46px,7vw,82px);line-height:1}.hero h1{margin:8px 0 4px;font-size:clamp(42px,7vw,78px);line-height:.98}.hero .tagline{margin:6px 0;color:var(--gold);font-size:clamp(19px,2.5vw,29px);font-weight:900}.hero p{max-width:760px;margin:14px auto 0;color:var(--muted);font-size:1.1rem;line-height:1.6}.setup-card{max-width:1100px;margin:0 auto;padding:20px;border:1px solid var(--line);border-radius:22px;background:rgba(8,25,60,.92);box-shadow:var(--shadow)}.setup-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}label{display:grid;gap:7px;color:var(--muted);font-weight:850}input,select{width:100%;min-height:48px;border:1px solid var(--line);border-radius:11px;padding:10px 12px;background:#071735;color:#fff}.setup-actions{grid-column:1/-1;justify-content:center;align-items:center;flex-direction:column;margin-top:4px;text-align:center}.mode-help{max-width:760px;margin:0;color:var(--muted);line-height:1.45}.rules{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;max-width:1100px;margin:18px auto 0}.rule{padding:15px 12px;border:1px solid var(--line);border-radius:16px;background:rgba(8,23,53,.78);text-align:center;color:var(--muted);line-height:1.35}.rule strong{display:block;margin-bottom:5px;color:var(--gold)}.prototype-note{max-width:900px;margin:18px auto 0;padding:12px 15px;border-left:4px solid var(--gold);background:rgba(255,211,78,.08);color:var(--muted);line-height:1.5}.game-shell{padding-top:18px}.game-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.status-pill{padding:9px 13px;border:1px solid var(--line);border-radius:999px;background:#10295d;color:var(--cream);font-weight:850}.game-layout{display:grid;grid-template-columns:minmax(520px,1.35fr) minmax(330px,.65fr);gap:18px;align-items:start}.board-card,.side-card{border:1px solid var(--line);border-radius:22px;background:var(--panel);box-shadow:var(--shadow)}.board-card{padding:14px}.score-row{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;margin-bottom:12px}.player-card{padding:11px 13px;border:1px solid var(--line);border-radius:14px;background:#0d2455}.player-card.black{text-align:right}.player-card.active{outline:3px solid var(--gold);outline-offset:1px}.player-name{display:block;font-weight:900}.player-meta{display:flex;gap:10px;align-items:baseline;color:var(--muted);font-size:.92rem}.player-card.black .player-meta{justify-content:flex-end}.scripture-score{color:var(--gold);font-size:1.4rem;font-weight:950}.versus{color:var(--muted);font-weight:900}.board-wrap{position:relative;max-width:min(78vh,820px);margin:0 auto}.chessboard{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;border:5px solid #d5b94e;border-radius:10px;overflow:hidden;background:#fff;box-shadow:0 18px 45px rgba(0,0,0,.3)}.square{position:relative;display:grid;place-items:center;min-width:0;aspect-ratio:1;border:0;padding:0;cursor:pointer;color:#111;font-size:clamp(32px,5.7vw,72px);line-height:1}.square.light{background:var(--light-square)}.square.dark{background:var(--dark-square)}.square:hover:not(:disabled),.square:focus-visible{z-index:2;outline:4px solid var(--gold);outline-offset:-4px}.square.selected{box-shadow:inset 0 0 0 6px var(--gold)}.square.legal::after{content:"";position:absolute;width:24%;height:24%;border-radius:50%;background:rgba(10,30,65,.42);pointer-events:none}.square.capture-target::after{width:72%;height:72%;border:5px solid rgba(255,211,78,.82);background:transparent}.square.last-move{box-shadow:inset 0 0 0 5px rgba(255,247,162,.55)}.square.in-check{box-shadow:inset 0 0 0 7px var(--red);background-image:radial-gradient(circle,rgba(239,103,103,.6),transparent 65%)}.square:disabled{cursor:default}.piece{filter:drop-shadow(0 2px 1px rgba(255,255,255,.32));transform:translateY(-1px)}.piece.black-piece{filter:drop-shadow(0 2px 1px rgba(255,255,255,.15))}.coord{position:absolute;font-size:clamp(8px,1vw,12px);font-weight:900;opacity:.72;pointer-events:none}.coord.file{right:4px;bottom:2px}.coord.rank{left:4px;top:2px}.board-lock{position:absolute;inset:0;display:grid;place-items:center;border-radius:8px;background:rgba(3,10,27,.38);backdrop-filter:blur(1px);font-size:1rem;font-weight:900;text-align:center;padding:20px;pointer-events:none}.side-card{min-height:620px;padding:18px;display:flex;flex-direction:column}.side-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line)}.side-heading h2{margin:0;font-size:1.2rem}.event-badge{display:inline-flex;padding:6px 9px;border-radius:999px;background:#183879;color:var(--gold);font-size:.78rem;font-weight:900;text-transform:uppercase;letter-spacing:.05em}.instruction{display:grid;place-items:center;flex:1;min-height:300px;text-align:center;padding:24px;color:var(--muted)}.instruction strong{display:block;color:#fff;font-size:clamp(24px,2.5vw,34px);margin-bottom:8px}.challenge{display:flex;flex:1;flex-direction:column}.challenge-reference{margin:18px 0 6px;color:var(--gold);font-weight:900}.challenge-question{margin:5px 0 18px;font-size:clamp(22px,2.2vw,31px);line-height:1.22;font-weight:900}.choice-list{display:grid;gap:9px}.choice{min-height:54px;border:2px solid var(--line);border-radius:13px;padding:10px 12px;background:#183879;color:#fff;font-weight:850;text-align:left;cursor:pointer}.choice:hover,.choice:focus-visible{filter:brightness(1.14);outline:3px solid rgba(255,211,78,.45)}.choice.correct{background:#176a42;border-color:#8ef2bb}.choice.wrong{background:#812f3d;border-color:#ff9aaa}.answer-panel{margin-top:12px;padding:13px;border-radius:14px;background:#0b204c;border:1px solid var(--line);line-height:1.5}.answer-panel strong{color:var(--gold)}.challenge-actions{margin-top:auto;padding-top:14px}.leader-score{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:10px}.feedback{min-height:28px;margin-top:10px;color:var(--gold);font-weight:900;line-height:1.4}.move-log{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}.move-log h3{margin:0 0 8px;font-size:.95rem;color:var(--muted)}.move-list{display:flex;gap:7px;flex-wrap:wrap;max-height:95px;overflow:auto}.move-chip{padding:5px 8px;border-radius:8px;background:#10295d;color:#dfe7ff;font-size:.8rem}.promotion-dialog{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:20px;background:rgba(0,0,0,.7)}.promotion-card{width:min(540px,100%);padding:22px;border:1px solid var(--line);border-radius:20px;background:#071735;box-shadow:var(--shadow);text-align:center}.promotion-card h2{margin-top:0}.promotion-options{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px}.promotion-piece{min-height:88px;border:1px solid var(--line);border-radius:13px;background:#173772;color:#fff;font-size:2.6rem;cursor:pointer}.promotion-piece:hover,.promotion-piece:focus-visible{outline:4px solid var(--gold)}.complete-card{max-width:760px;margin:38px auto;padding:38px 24px;border:1px solid var(--line);border-radius:24px;background:var(--panel);box-shadow:var(--shadow);text-align:center}.complete-card .mark{font-size:4rem}.complete-card h2{margin:8px 0;font-size:clamp(34px,5vw,58px)}.complete-card p{color:var(--muted);font-size:1.08rem;line-height:1.55}.final-scores{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.final-scores.solo{grid-template-columns:1fr;max-width:380px;margin:20px auto}.final-score{padding:16px;border:1px solid var(--line);border-radius:14px;background:#0d2455}.final-score strong{display:block}.final-score span{color:var(--gold);font-size:2rem;font-weight:950}.license-note{max-width:1100px;margin:18px auto 0;text-align:center;color:#9da9ca;font-size:.78rem}.license-note a{color:#cbd5ee}
@media(max-width:1050px){.setup-grid{grid-template-columns:1fr 1fr}.game-layout{grid-template-columns:1fr}.side-card{min-height:460px}.board-wrap{max-width:min(86vw,760px)}.rules{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){.app{padding:9px}.topbar{padding:10px}.brand img{width:44px;height:44px}.prototype-badge{margin-left:0}.setup-grid{grid-template-columns:1fr}.rules{grid-template-columns:1fr 1fr}.game-layout{gap:10px}.board-card,.side-card{border-radius:16px}.board-card{padding:8px}.side-card{padding:14px;min-height:390px}.score-row{grid-template-columns:1fr 1fr}.versus{display:none}.player-card.black{text-align:left}.player-card.black .player-meta{justify-content:flex-start}.board-wrap{max-width:100%}.chessboard{border-width:3px}.square{font-size:clamp(28px,10vw,56px)}.leader-score{grid-template-columns:1fr}.final-scores{grid-template-columns:1fr}.promotion-options{grid-template-columns:1fr 1fr}.hero{padding-top:30px}.top-actions{width:100%}.top-actions .btn{flex:1;text-align:center}}
@media(max-width:430px){.rules{grid-template-columns:1fr}.coord{display:none}.btn{padding:9px 11px}.player-meta{display:block}.scripture-score{display:block}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.topbar,.game-toolbar,.side-card,.setup-card,.rules,.prototype-note{display:none!important}.game-layout{display:block}.board-card{border:0;box-shadow:none}.chessboard{max-width:7in;margin:auto}}