/* Speed Excel (speed-excel.html): a pixel-arcade look around the site's spreadsheet. Always dark. */
:root {
  --sx-bg: #14142b; --sx-bg2: #1d1d3d; --sx-ink: #f4f4ff; --sx-dim: #9a9ac8; --sx-y: #ffd93d; --sx-g: #3ddc84; --sx-r: #ff4f5e; --sx-b: #4cc9f0; --sx-p: #c77dff;
  --muted: #6b6b80; --mono: ui-monospace, Menlo, Consolas, monospace; --accent: #2f7a63;
  --pix: "Press Start 2P", ui-monospace, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--sx-ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--sx-bg); background-image: radial-gradient(#ffffff14 1px, transparent 1px), radial-gradient(#ffffff0d 1px, transparent 1px); background-size: 24px 24px, 37px 37px; background-position: 0 0, 11px 17px; }
.px { image-rendering: pixelated; vertical-align: middle; }
/* chunky pixel border */
.sx-tile, .sx-brief, .sx-how, .sx-side, .sx-wincard, .sx-start, .sx-back, .sx-quit, .sx-winbtns button, .sx-sheet {
  box-shadow: 0 -4px 0 0 var(--sx-ink), 0 4px 0 0 var(--sx-ink), -4px 0 0 0 var(--sx-ink), 4px 0 0 0 var(--sx-ink), 0 8px 0 0 #00000066;
}
.sx-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; font-family: var(--pix); font-size: 10px; }
.sx-top a { color: var(--sx-dim); text-decoration: none; }
.sx-top a:hover { color: var(--sx-y); }
.sx-top nav { display: flex; gap: 16px; }
/* the logo, top left: SPEED over EXCEL in coloured pixel letters */
.sx-brandlogo { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 5px; text-decoration: none; }
.sx-speed { font-size: 9px; letter-spacing: 3px; color: var(--sx-dim); }
.sx-word { display: inline-flex; gap: 5px; filter: drop-shadow(3px 3px 0 #000000aa); }
.sx-word svg { width: 25px; height: 35px; }
.sx-brandlogo:hover .sx-speed, .sx-brandlogo:focus-visible .sx-speed { color: var(--sx-y); }
.sx-brandlogo:hover .sx-word svg, .sx-brandlogo:focus-visible .sx-word svg { animation: sxhop .5s steps(2) both; }
.sx-word svg:nth-child(2) { animation-delay: .06s !important; } .sx-word svg:nth-child(3) { animation-delay: .12s !important; }
.sx-word svg:nth-child(4) { animation-delay: .18s !important; } .sx-word svg:nth-child(5) { animation-delay: .24s !important; }
@keyframes sxhop { 50% { transform: translateY(-5px); } }
.sx-main { max-width: 1180px; margin: 0 auto; padding: 8px 16px 48px; }

/* home */
.sx-home { text-align: center; }
.sx-logo { font-family: var(--pix); line-height: 1.1; margin: 18px 0 8px; display: grid; gap: 6px; }
.sx-s1 { font-size: clamp(28px, 8vw, 64px); color: var(--sx-y); text-shadow: 4px 4px 0 var(--sx-r), 8px 8px 0 #00000088; }
.sx-s2 { font-size: clamp(28px, 8vw, 64px); color: var(--sx-g); text-shadow: 4px 4px 0 var(--sx-b), 8px 8px 0 #00000088; }
.sx-tag { font-family: var(--pix); font-size: 11px; color: var(--sx-dim); margin: 18px 0; animation: sxblink 1.4s steps(2) infinite; }
@keyframes sxblink { 50% { opacity: .35; } }
.sx-stats { display: flex; justify-content: center; gap: 24px; font-family: var(--pix); font-size: 10px; color: var(--sx-y); margin-bottom: 26px; }
.sx-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; max-width: 900px; margin: 0 auto; }
.sx-tile { position: relative; display: grid; justify-items: center; gap: 10px; padding: 18px 8px 14px; border: 0; background: var(--sx-bg2); color: var(--sx-ink); cursor: pointer; font-family: var(--pix); transition: transform .08s steps(2); }
.sx-tile:hover, .sx-tile:focus-visible { transform: translate(-2px, -3px); background: #262652; outline: none; }
.sx-tile:active { transform: translate(0, 2px); }
.sx-tile.cleared { background: #1c3b33; }
.sx-num { position: absolute; top: 6px; left: 8px; font-size: 8px; color: var(--sx-dim); }
.sx-name { font-size: 9px; line-height: 1.5; min-height: 2.6em; display: grid; place-items: center; }
.sx-best { font-size: 9px; color: var(--sx-y); display: flex; align-items: center; gap: 4px; }
.sx-how { max-width: 760px; margin: 36px auto 0; padding: 16px 20px; background: var(--sx-bg2); text-align: left; }
.sx-how b { font-family: var(--pix); font-size: 10px; color: var(--sx-b); }
.sx-how p { margin: 8px 0 0; color: var(--sx-dim); }

/* brief */
.sx-brief { max-width: 640px; margin: 18px auto; padding: 22px 24px 26px; background: var(--sx-bg2); }
.sx-back, .sx-quit { font-family: var(--pix); font-size: 9px; padding: 8px 12px; border: 0; background: var(--sx-bg); color: var(--sx-ink); cursor: pointer; }
.sx-back:hover, .sx-quit:hover { color: var(--sx-y); }
.sx-bhead { display: flex; align-items: center; gap: 16px; margin: 20px 0 8px; }
.sx-lv { font-family: var(--pix); font-size: 9px; color: var(--sx-dim); }
.sx-bhead h2 { font-family: var(--pix); font-size: 18px; margin: 6px 0 0; color: var(--sx-y); line-height: 1.3; }
.sx-mission { font-size: 1.05rem; margin: 10px 0; }
.sx-note { color: var(--sx-dim); font-size: .9rem; margin: 6px 0; }
.sx-data { display: grid; gap: 6px; margin: 8px 0 14px; font-family: var(--mono); font-size: .85rem; }
.sx-line { display: flex; flex-wrap: wrap; gap: 2px 14px; margin: 0; }
.sx-pair { min-width: 0; overflow-wrap: anywhere; }
.sx-pair b { color: var(--sx-b); font-weight: 600; margin-right: 7px; }
/* cell-by-cell data as a mini sheet */
.sx-minibox { max-width: 100%; overflow-x: auto; margin: 8px 0 14px; }
.sx-mini { border-collapse: collapse; font-family: var(--mono); font-size: .8rem; }
.sx-mini th { padding: 2px 6px; color: var(--sx-b); font-weight: 600; text-align: center; background: #ffffff0f; border: 1px solid #ffffff1f; }
.sx-mini tbody th { min-width: 24px; }
.sx-mini td { padding: 3px 7px; border: 1px solid #ffffff2b; color: var(--sx-ink); overflow-wrap: break-word; }
.sx-rules { margin: 6px 0 16px; padding-left: 20px; }
.sx-rules li { margin: 4px 0; }
.sx-targets { display: flex; flex-wrap: wrap; gap: 18px; font-family: var(--pix); font-size: 10px; margin: 10px 0; }
.sx-targets span { display: flex; align-items: center; gap: 8px; }
.sx-pb { font-family: var(--pix); font-size: 10px; color: var(--sx-g); display: flex; align-items: center; gap: 8px; }
.sx-start { display: block; width: 100%; margin-top: 20px; padding: 16px; border: 0; background: var(--sx-g); color: #0b2a19; font-family: var(--pix); font-size: 16px; cursor: pointer; animation: sxpulse 1.2s steps(2) infinite; }
.sx-start:hover { background: var(--sx-y); }
@keyframes sxpulse { 50% { filter: brightness(1.18); } }

/* play */
.sx-hud { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 10px 0 18px; }
.sx-clock { font-family: var(--pix); font-size: clamp(20px, 5vw, 34px); color: var(--sx-y); text-shadow: 3px 3px 0 var(--sx-r); letter-spacing: 2px; }
.sx-lvname { font-family: var(--pix); font-size: 9px; color: var(--sx-dim); }
.sx-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 24px; align-items: start; }
.sx-side { padding: 14px 16px; background: var(--sx-bg2); position: sticky; top: 10px; }
.sx-side .sx-mission { font-size: .95rem; margin-top: 0; }
.sx-live { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 8px; font-size: .9rem; }
.sx-live li { display: flex; gap: 10px; align-items: flex-start; color: var(--sx-dim); }
.sx-box { flex: none; width: 14px; height: 14px; margin-top: 3px; background: var(--sx-bg); box-shadow: 0 0 0 2px var(--sx-dim); }
.sx-live li.ok { color: var(--sx-g); }
.sx-lost { margin: 12px 0 0; padding: 8px 10px; background: #3a1420; color: #ffb3bb; font-size: .88rem; box-shadow: 0 0 0 2px var(--sx-r); }
.sx-live li.ok .sx-box { background: var(--sx-g); box-shadow: 0 0 0 2px var(--sx-g); }
.sx-sheet { position: relative; background: #fff; padding: 6px; color: #1c1b19; }
.sx-count { position: absolute; inset: 0; z-index: 60; display: grid; place-items: center; background: #14142bdd; font-family: var(--pix); font-size: clamp(40px, 12vw, 110px); color: var(--sx-y); text-shadow: 6px 6px 0 var(--sx-r); animation: sxpop .75s steps(3) infinite; }
@keyframes sxpop { 0% { transform: scale(1.25); } 100% { transform: scale(1); } }

/* win */
.sx-win { position: fixed; inset: 0; z-index: 300; display: grid; place-items: center; background: #0b0b1ccc; padding: 16px; }
.sx-wincard { width: min(440px, 100%); padding: 24px; background: var(--sx-bg2); text-align: center; font-family: var(--pix); }
.sx-rec { font-size: 12px; color: var(--sx-y); animation: sxblink .6s steps(2) infinite; }
.sx-rec.dim { color: var(--sx-dim); animation: none; }
.sx-medal { margin: 16px 0 8px; }
.sx-time { font-size: 28px; color: var(--sx-ink); text-shadow: 3px 3px 0 var(--sx-p); }
.sx-wincard p { font-family: system-ui, sans-serif; color: var(--sx-dim); font-size: .95rem; }
.sx-top5 { list-style: decimal; text-align: left; display: inline-block; margin: 6px 0 14px; padding-left: 28px; font-size: 10px; color: var(--sx-dim); line-height: 2; }
.sx-top5 li.me { color: var(--sx-y); }
.sx-winbtns { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.sx-winbtns button { font-family: var(--pix); font-size: 10px; padding: 10px 14px; border: 0; background: var(--sx-bg); color: var(--sx-ink); cursor: pointer; }
.sx-winbtns .sx-again { background: var(--sx-g); color: #0b2a19; }
.sx-winbtns button:hover { filter: brightness(1.2); }

@media (max-width: 900px) { .sx-grid { grid-template-columns: repeat(3, 1fr); } .sx-layout { grid-template-columns: minmax(0, 1fr); } .sx-side { position: static; } }
@media (max-width: 560px) { .sx-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; } .sx-top { font-size: 8px; } .sx-top nav { gap: 10px; } .sx-word { gap: 3px; } .sx-word svg { width: 17px; height: 24px; } }
@media (max-width: 380px) { .sx-top nav { flex-direction: column; align-items: flex-end; gap: 6px; } }