/* Ironstrike brand tokens (copied from ironstrike-ai/index.html). Zero dependencies. */
:root{--bg:#0a0a0b;--panel:#141416;--steel-line:#38393e;--text:#eae8e4;--dim:#9a9a9f;--ember:#f5821f;--ember-bright:#ff9e42}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:760px;margin:0 auto;padding:24px 16px}
main.wrap{flex:1}
h1{font-size:2rem;line-height:1.15;margin:0 0 8px}
p{margin:0 0 12px}
a{color:var(--ember-bright)}
.lede{color:var(--dim)}
button,.btn{min-height:44px;min-width:44px;padding:10px 20px;font:inherit;font-weight:600;color:#0a0a0b;background:var(--ember);border:0;border-radius:8px;cursor:pointer}
button:focus-visible,a:focus-visible{outline:3px solid var(--ember-bright);outline-offset:2px}
.is-footer{border-top:1px solid var(--steel-line);color:var(--dim);font-size:.875rem;padding:16px;max-width:760px;margin:0 auto;width:100%}
.is-footer p{margin:0 0 8px}
@media (min-width:820px){.wrap{padding:40px 24px}h1{font-size:2.6rem}}
@media (min-width:1440px){.wrap{max-width:960px}}
/* Embers */
.layout{display:block}
.status{display:flex;justify-content:space-between;gap:8px;color:var(--dim);font-size:.95rem;margin-bottom:10px}
.status strong{color:var(--text)}
.board{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;width:100%;max-width:420px;margin:0 auto}
.coal{aspect-ratio:1;min-width:0;min-height:44px;padding:0;background:var(--panel);border:1px solid var(--steel-line);border-radius:10px;transition:background .12s,box-shadow .12s}
.coal.on{background:var(--ember);border-color:var(--ember-bright);box-shadow:0 0 14px rgba(245,130,31,.55)}
.coal:disabled{cursor:default;opacity:.9}
.msg{min-height:1.5em;margin:12px 0 0;text-align:center;color:var(--ember-bright);font-weight:600}
.side{margin-top:12px}
.levels,.actions{display:flex;gap:8px;margin-bottom:12px}
.levels button,.actions button{flex:1}
.levels button{background:var(--panel);color:var(--text);border:1px solid var(--steel-line)}
.levels button[aria-pressed="true"]{background:var(--ember);color:#0a0a0b;border-color:var(--ember)}
.alt{background:var(--panel);color:var(--text);border:1px solid var(--steel-line)}
.how{color:var(--dim)}
.how summary{cursor:pointer;color:var(--text);min-height:44px;line-height:44px}
@media (min-width:820px){.layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:start}.side{margin-top:0;padding-top:36px}.board{margin:0}}
@media (min-width:1440px){.board{max-width:460px}}