/* v1 — before/after showcase pieces (on top of base.css) */

/* headline numbers */
.headline { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; margin-bottom: 26px; }
.head-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.head-who { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.head-who span { color: var(--muted); font-size: 13px; }
.head-nums { display: flex; align-items: baseline; gap: 12px; margin: 8px 0 4px; font: 700 clamp(34px, 5vw, 48px)/1 var(--display); letter-spacing: -0.02em; }
.head-nums .was { color: var(--muted); }
.head-nums i { font-style: normal; color: var(--muted); font-size: .6em; }
.head-nums .delta { font-size: 15px; align-self: center; }
.head-sub { color: var(--muted); font-size: 13px; }

/* spotlight */
.spotlight { display: grid; gap: 14px; }
.spot-main { display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(280px, 1fr); gap: 18px; align-items: start; }
.spot-wipe { border-radius: var(--radius); }
.spot-info { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; display: grid; gap: 10px; }
.spot-info h3 { font-size: 24px; }
.spot-info h4 { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 4px 0 0; }
.spot-info .m-meta { margin: 0; padding: 0; }
.spot-blurb { color: var(--text-2); margin: 0; font-size: 14px; }
.spot-score { display: flex; align-items: flex-end; gap: 10px; flex-wrap: wrap; }
.spot-score > div { display: grid; }
.spot-score span { font: 500 11px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.spot-score b { font: 700 34px/1.1 var(--mono); }
.spot-score b.was { color: var(--muted); font-size: 26px; }
.spot-score i { font-style: normal; color: var(--muted); padding-bottom: 6px; }
.spot-score .delta { margin-bottom: 6px; }
.spot-cats { display: grid; gap: 7px; }
.spot-cats > div { display: grid; grid-template-columns: 70px 1fr 56px; gap: 10px; align-items: center; font-size: 13px; color: var(--text-2); }
.spot-cats b { font: 600 12px var(--mono); text-align: right; color: var(--text); }
.spot-cats .meter { height: 6px; }
.spot-spark span { font: 500 11px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.spark { display: block; width: 100%; height: auto; max-height: 70px; }
.spark-line { fill: none; stroke: var(--accent); stroke-width: 2; }
.spark-dot { fill: var(--accent); }
.spark-end { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.spot-notes { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.spot-notes li { font-size: 13px; color: var(--text-2); display: grid; grid-template-columns: auto auto 1fr; gap: 8px; align-items: start; }
.spot-notes li.m-hint { display: block; }
.spot-notes b { font: 700 12px var(--mono); color: var(--text); padding-top: 2px; }
.spot-notes .pill { font-size: 10px; padding: 1px 6px; }
.spot-info > .btn { justify-self: start; }
.spot-left { display: grid; gap: 12px; min-width: 0; }
.spot-rail { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.spot-rail button { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 0 0 8px; cursor: pointer; text-align: left; overflow: hidden; display: grid; gap: 4px; transition: border-color .15s; }
.spot-rail button:hover { border-color: var(--hover-border); }
.spot-rail button[aria-selected="true"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.spot-rail img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.rail-title { font: 600 13px var(--display); padding: 0 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rail-sub { font: 500 11px var(--mono); color: var(--muted); padding: 0 10px; display: flex; align-items: center; gap: 6px; }
@media (max-width: 980px) { .spot-main { grid-template-columns: 1fr; } }
@media (max-width: 1100px) { .spot-rail { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 760px) { .spot-rail { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 520px) { .spot-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); } }


/* pair cards */
.grid-pairs { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }
@media (max-width: 420px) { .grid-pairs { grid-template-columns: 1fr; } }
.pair-score { display: flex; align-items: baseline; gap: 8px; font-family: var(--mono); }
.pair-score .was { color: var(--muted); font-size: 15px; }
.pair-score i { font-style: normal; color: var(--muted); }
.pair-score b { font-size: 20px; }
.pair-score .delta { font-size: 12px; margin: 0 0 0 auto; }
.pair-cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; font: 500 11px var(--mono); color: var(--muted); }
.pair-cats span { display: flex; gap: 5px; }
.pair-cats b { font-weight: 600; }
.pair-cats .up { color: var(--up); } .pair-cats .down { color: var(--down); } .pair-cats .flat { color: var(--text-2); }
.pair-card .badge { z-index: 2; }

/* charts */
.crosshair { stroke: var(--text-2); stroke-width: 1; stroke-dasharray: 3 3; }
.tip .dot { vertical-align: middle; margin-right: 2px; }
.tip .muted { color: var(--muted); font-size: 11px; }

/* simple game dialog: replay on top, scores underneath */
.modal.simple .modal-panel { display: block; width: min(1040px, 100%); height: auto; max-height: 100%; overflow-y: auto; }
.modal.simple .modal-media { border-right: 0; overflow: visible; padding-bottom: 8px; }
.modal.simple .modal-info { overflow: visible; padding-top: 8px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 4px 28px; align-items: start; }
.modal.simple .m-meta, .modal.simple #m-title, .modal.simple .m-blurb { grid-column: 1; }
.modal.simple .m-score { grid-column: 2; grid-row: 1 / span 3; }
.modal.simple #m-twin { grid-column: 1; }
.modal.simple .m-prompt, .modal.simple .m-h, .modal.simple #m-reqhint, .modal.simple #m-reqs, .modal.simple #m-evo { display: none; }
@media (max-width: 760px) { .modal.simple .modal-info { grid-template-columns: 1fr; } .modal.simple .m-score { grid-column: 1; grid-row: auto; } }

/* ---------- the first screen is a game ---------- */
.stage { position: relative; height: 100vh; height: 100svh; display: grid; grid-template-rows: minmax(0, 1fr) auto; background: var(--media-bg); }
.stage-game { position: relative; min-height: 0; overflow: hidden; }
.stage-game iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.stage-cover { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; }
.stage-cover img, .stage-cover video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.stage-cover img { filter: brightness(.45) blur(2px); transform: scale(1.03); }
.stage-cover > div { position: relative; display: grid; gap: 12px; justify-items: center; max-width: 560px; }
.stage-cover h2 { font-size: clamp(28px, 5vw, 48px); text-wrap: balance; }
.stage-cover p { margin: 0; color: var(--text-2); }
.stage-wipe { position: absolute; inset: 0; border: 0; border-radius: 0; aspect-ratio: auto; }
.stage-hint { position: absolute; left: 50%; top: 16px; transform: translateX(-50%); z-index: 2; pointer-events: none; font: 600 13px var(--mono); color: var(--accent-ink); background: var(--accent); padding: 6px 12px; border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.4); transition: opacity .4s; white-space: nowrap; }
.stage-hint.gone { opacity: 0; }
.stage-bar { display: flex; align-items: center; gap: 12px 20px; flex-wrap: wrap; padding: 10px var(--gutter); background: var(--bg); border-top: 1px solid var(--border); }
.stage-about { display: grid; gap: 1px; min-width: 0; }
.stage-about b { font: 700 16px var(--display); }
.stage-about span { color: var(--muted); font-size: 13px; display: inline-flex; align-items: center; gap: 6px; }
.stage-mid { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-inline: auto; }
.stage-mid .seg button { display: inline-flex; gap: 8px; align-items: baseline; }
.stage-mid .seg button b { font: 700 12px var(--mono); color: var(--muted); }
.stage-mid .seg button.on b { color: var(--accent); }
.stage-keys { font: 500 12px var(--mono); color: var(--muted); }
body.on-stage .nav { transform: translateY(-100%); }
.nav { transition: transform .25s, border-color .2s, background .2s; }
@media (max-width: 720px) { .stage-mid { margin-inline: 0; } .stage-down { margin-left: auto; } .stage-keys { display: none; } }
.btn-reset { border: 0; padding: 24px; margin: 0; width: 100%; height: 100%; cursor: pointer; color: var(--text); font: inherit; background: none; }

/* development-time scaling: four panels, one per engine x generator */
.devgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 18px; margin-top: 8px; }
@media (max-width: 620px) { .devgrid { grid-template-columns: 1fr; } }
.dev-panel { margin: 0; min-width: 0; }
.dev-panel figcaption { display: grid; gap: 1px; margin-bottom: 4px; }
.dev-panel figcaption b { font: 600 13.5px var(--display); }
.dev-panel figcaption span { font: 500 10.5px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.dev-panel svg { display: block; width: 100%; height: auto; }
.dev-gains { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 3px; }
.dev-gains span { display: inline-flex; align-items: center; gap: 5px; font: 600 12.5px var(--mono); }
.dev-gains .up { color: var(--up); }
.dev-gains .down { color: var(--down); }
.legend-dev span { gap: 8px; }
.legend-dev .lg-line { width: 26px; height: 8px; flex: none; }
.ax-title { font-family: var(--mono); font-size: 9px; fill: var(--muted); letter-spacing: .04em; }
.chart-foot { margin: 14px 0 0; padding-top: 11px; border-top: 1px solid var(--border); font-size: 12.5px; line-height: 1.55; color: var(--muted); }

/* main results table, mirroring the paper */
.table-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 30px 0 0; }
.table-head h3 { font-size: 19px; margin: 0; }
.table-main { font-variant-numeric: tabular-nums; }
.table-main caption { caption-side: top; text-align: left; color: var(--muted); font-size: 13px; padding: 13px 16px 0; }
.table-main tr.grp th { padding-top: 15px; color: var(--text-2); }
.table-main tbody th[scope="row"] { text-align: left; font: 500 14px var(--font); color: var(--text-2); text-transform: none; letter-spacing: 0; background: none; white-space: nowrap; }
.table-main tr.ours { background: rgba(46, 141, 255, .07); }
.table-main tr.ours th[scope="row"] { color: var(--text); font-weight: 700; }
.table-main tr.ours td { color: var(--text); font-weight: 600; }
.table-main sup { font: 500 9.5px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-left: 6px; vertical-align: super; }
.table-main td.na { color: var(--muted); }
.results { align-items: start; }
.pair-val { font-family: var(--font); font-size: 11.5px; }

/* abstract, right column: the inner and outer loops */
.loopcard { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; display: grid; gap: 14px; }
.loopcard h3 { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin: 0; }
.loopbox { border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px 16px; background: var(--bg-alt); position: relative; }
.loopbox.inner { border-left: 2px solid var(--accent); }
.loopbox.outer { border-left: 2px solid var(--accent-2); }
.loophead { display: flex; align-items: baseline; gap: 9px; margin-bottom: 12px; }
.loophead b { font: 700 15px var(--display); }
.loopbox.inner .loophead b { color: var(--accent); }
.loopbox.outer .loophead b { color: var(--accent-2); }
.loophead span { font: 500 10.5px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.loopsteps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; counter-reset: step; }
.loopsteps li { display: grid; grid-template-columns: 22px 1fr; column-gap: 10px; row-gap: 2px; align-items: start; counter-increment: step; }
.loopsteps li::before { content: counter(step); font: 700 11px var(--mono); color: var(--accent); background: rgba(46,141,255,.12); border: 1px solid rgba(46,141,255,.32); border-radius: 50%; width: 22px; height: 22px; display: grid; place-items: center; }
.loopsteps li::before { grid-row: 1 / span 2; }
.loopsteps b { grid-column: 2; font: 600 14px var(--display); }
.loopsteps span { grid-column: 2; }
.loopsteps span { color: var(--text-2); font-size: 13.5px; line-height: 1.5; }
.loopcycle { margin: 12px 0 0; padding-top: 11px; border-top: 1px dashed var(--border); font-size: 12.5px; color: var(--muted); line-height: 1.5; }
.loopcycle span { color: var(--accent); margin-right: 5px; font-size: 14px; }
.loopouter { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.loopouter li { color: var(--text-2); font-size: 13.5px; line-height: 1.5; }
.loopouter b { display: block; font: 600 14px var(--display); color: var(--text); margin-bottom: 2px; }

/* Demo video: between the stat strip and the abstract. */
.demo { margin: 0 auto 72px; max-width: 1040px; }
.demo video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #000; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 24px 60px rgba(0,0,0,.45); }
.demo figcaption { color: var(--text-2); font-size: 14px; margin-top: 12px; text-align: center; }