/* Elko::ChartGeometry Scanner (beta) — tokens only. Both themes are contrast-checked by a Go test (WCAG AA 4.5:1). */
:root[data-theme="dark"] {
  --bg: #0b1020; --panel: #131a2e; --panel-2: #1a2340; --border: #6479a3;
  --text: #f0f3f8; --text-2: #d5dbe6; --accent: #38bdf8; --accent-text: #04121f;
  --btn-bg: #38bdf8; --btn-text: #04121f; --btn2-bg: #1d2742; --btn2-text: #f0f3f8;
  --field-bg: #0b1020; --field-text: #f0f3f8;
  --pos: #4ade80; --neg: #ff8a80; --warn-bg: #3b2f08; --warn-text: #ffe28a;
  --beta: #ff6b6b; --focus: #fde047; --locked: #b4bed2;
  --disc-bg: #ffd400; --disc-text: #8b0000;
  --fb-btn-bg: #f5c518; --fb-btn-text: #14100a; --fb-modal-bg: #ffd400; --fb-text: #111111; --fb-field: #fff6bf; --fb-border: #7a5c00; --fb-submit-bg: #111111; --fb-submit-text: #ffd400; --fb-error: #8b0000;
  --coffee-bg: #c9a63a; --coffee-text: #14100a; --scrim: rgba(0,0,0,.65);
  --c-eq: #38bdf8; --c-bench: #f59e0b; --c-dd: #ff8a80; --c-grid: #3a4a6b;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f4f6f9; --panel: #ffffff; --panel-2: #eef2f7; --border: #6f7d92;
  --text: #14202b; --text-2: #35444f; --accent: #0b5cad; --accent-text: #ffffff;
  --btn-bg: #0b5cad; --btn-text: #ffffff; --btn2-bg: #e3e9f1; --btn2-text: #14202b;
  --field-bg: #ffffff; --field-text: #14202b;
  --pos: #11662b; --neg: #b42318; --warn-bg: #fff3c4; --warn-text: #5c3b00;
  --beta: #b91c1c; --focus: #7a4b00; --locked: #4d5b6b;
  --disc-bg: #ffd400; --disc-text: #8b0000;
  --fb-btn-bg: #f5c518; --fb-btn-text: #14100a; --fb-modal-bg: #ffd400; --fb-text: #111111; --fb-field: #fff6bf; --fb-border: #7a5c00; --fb-submit-bg: #111111; --fb-submit-text: #ffd400; --fb-error: #8b0000;
  --coffee-bg: #7a5200; --coffee-text: #fff8e8; --scrim: rgba(20,32,43,.55);
  --c-eq: #0b5cad; --c-bench: #8a4b00; --c-dd: #b42318; --c-grid: #b9c3d3;
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hidden { display: none !important; }
.skip { position: absolute; left: -999px; top: 0; background: var(--btn-bg); color: var(--btn-text); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; }

header.top { display: flex; align-items: center; justify-content: space-between; gap: 10px 16px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: 8px; font-weight: 800; letter-spacing: .01em; flex-wrap: wrap; }
.brand a { color: var(--text); text-decoration: none; }
.brand-version { font-size: 12px; font-weight: 600; color: var(--text-2); }
.beta-tag { font-size: 12px; font-weight: 800; letter-spacing: .12em; color: var(--beta); border: 1.5px solid var(--beta); border-radius: 4px; padding: 0 6px; }
.top-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
nav.main-nav a { color: var(--text); text-decoration: none; font-weight: 700; padding: 6px 10px; border-radius: 8px; }
nav.main-nav a[aria-current="page"] { background: var(--btn2-bg); }
.pill-btn { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; font-weight: 800; font-size: 13px; padding: 6px 13px; font-family: inherit; cursor: pointer; border: 1px solid var(--border); background: var(--btn2-bg); color: var(--btn2-text); }
.feedback-btn { background: var(--fb-btn-bg); color: var(--fb-btn-text); border-color: var(--fb-btn-bg); box-shadow: 0 2px 10px rgba(245,197,24,.35); }
.feedback-btn:hover { filter: brightness(1.08); }
.theme-picker { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.theme-picker button { background: var(--btn2-bg); color: var(--btn2-text); border: 0; padding: 6px 12px; cursor: pointer; font: inherit; font-weight: 700; }
.theme-picker button[aria-pressed="true"] { background: var(--btn-bg); color: var(--btn-text); }

main { width: 100%; max-width: 1180px; margin: 0 auto; padding: 16px; flex: 1; }
h1 { font-size: 22px; margin: 4px 0 6px; }
h2 { font-size: 17px; margin: 0 0 8px; }
h3 { font-size: 14px; margin: 0 0 6px; }
.lead { color: var(--text-2); margin: 0 0 12px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 14px; }
.banner { border-radius: 10px; padding: 8px 12px; margin-bottom: 12px; background: var(--panel-2); border: 1px solid var(--border); display: flex; gap: 8px 16px; flex-wrap: wrap; align-items: center; }
.banner.stale { background: var(--warn-bg); color: var(--warn-text); border-color: var(--warn-text); }
.banner strong { font-weight: 800; }
.btn { background: var(--btn-bg); color: var(--btn-text); border: 1px solid var(--btn-bg); border-radius: 8px; padding: 8px 16px; font: inherit; font-weight: 800; cursor: pointer; text-decoration: none; display: inline-block; }
.btn.secondary { background: var(--btn2-bg); color: var(--btn2-text); border-color: var(--border); }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn:disabled, .btn[aria-disabled="true"] { cursor: not-allowed; color: var(--locked); background: var(--panel-2); border: 1px dashed var(--border); }
.btn.busy { cursor: wait; }
label { display: block; font-weight: 700; margin: 8px 0 4px; font-size: 13px; }
input[type=text], input[type=email], input[type=number], select, textarea { width: 100%; background: var(--field-bg); color: var(--field-text); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font: inherit; }
select option:disabled { color: var(--locked); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.row > .grow { flex: 1 1 260px; }
.muted { color: var(--text-2); }
.small { font-size: 13px; }
.err { color: var(--neg); font-weight: 700; min-height: 1.2em; }
.ok { color: var(--pos); font-weight: 700; }
.locked { color: var(--locked); border: 1px dashed var(--border); border-radius: 10px; padding: 8px 10px; background: var(--panel-2); }
.lock-tag { display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; margin-left: 6px; color: var(--locked); }
.favored-badge { display: inline-block; font-size: 13px; font-weight: 700; border: 1px solid var(--accent); color: var(--text); border-radius: 999px; padding: 2px 10px; margin-left: 8px; }
.favored-badge b { color: var(--accent); }

.grid-main { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 14px; align-items: start; }
@media (max-width: 960px) { .grid-main { grid-template-columns: 1fr; } }

/* editor */
.cond { display: grid; grid-template-columns: minmax(160px, 1.4fr) 84px minmax(110px, 1fr) minmax(130px, 1.2fr) 36px; gap: 6px; align-items: center; margin-bottom: 6px; }
.cond .val-wrap { display: flex; gap: 4px; align-items: center; }
.cond .val-wrap .unit { color: var(--text-2); font-size: 13px; }
@media (max-width: 720px) { .cond { grid-template-columns: 1fr 1fr; } .cond .remove { justify-self: end; } }
.icon-btn { background: var(--btn2-bg); color: var(--btn2-text); border: 1px solid var(--border); border-radius: 8px; width: 36px; height: 36px; cursor: pointer; font-size: 18px; line-height: 1; }
.and-chip { font-size: 11px; font-weight: 800; letter-spacing: .1em; color: var(--text-2); margin: 0 0 4px 4px; }
.preview { background: var(--panel-2); border-radius: 8px; padding: 8px 10px; font-size: 13px; margin: 8px 0; }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: right; white-space: nowrap; }
th:first-child, td:first-child, th.l, td.l { text-align: left; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-2); }
th.sorted { color: var(--text); text-decoration: underline; }
td.pos { color: var(--pos); } td.neg { color: var(--neg); }
.sym-btn { background: none; border: 0; color: var(--accent); font: inherit; font-weight: 800; cursor: pointer; padding: 0; text-decoration: underline; }
td.name { max-width: 220px; overflow: hidden; text-overflow: ellipsis; }

/* review */
details.review > summary { cursor: pointer; font-weight: 800; font-size: 16px; padding: 4px 0; }
.strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin: 10px 0; }
.stat { background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; }
.stat .v { font-size: 20px; font-weight: 800; }
.stat .l { font-size: 12px; color: var(--text-2); }
.method { font-size: 13px; color: var(--text-2); border-left: 3px solid var(--accent); padding-left: 10px; margin: 8px 0; }
svg.chart { width: 100%; height: auto; display: block; }
svg.chart text { fill: var(--text-2); font-size: 11px; font-family: inherit; }
svg.chart .grid { stroke: var(--c-grid); stroke-width: 1; }
svg.chart .eq { fill: none; stroke: var(--c-eq); stroke-width: 2; }
svg.chart .bench { fill: none; stroke: var(--c-bench); stroke-width: 1.5; stroke-dasharray: 5 3; }
svg.chart .dd { fill: var(--c-dd); fill-opacity: .35; stroke: var(--c-dd); stroke-width: 1.2; }
svg.chart .cross { stroke: var(--text-2); stroke-width: 1; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--text-2); margin: 4px 0; }
.legend i { display: inline-block; width: 18px; height: 3px; margin-right: 5px; vertical-align: middle; }
.legend .l-eq { background: var(--c-eq); } .legend .l-bench { background: var(--c-bench); } .legend .l-dd { background: var(--c-dd); }
.tip { font-size: 13px; min-height: 1.4em; color: var(--text); }

/* modals */
.backdrop { position: fixed; inset: 0; z-index: 80; background: var(--scrim); display: flex; align-items: center; justify-content: center; padding: 16px; }
.backdrop[hidden] { display: none !important; }
.modal { width: min(660px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; background: var(--panel); color: var(--text); border: 1px solid var(--border); border-top: 3px solid var(--accent); border-radius: 14px; padding: 16px 20px; }
.modal:focus { outline: none; }
.modal-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 8px; }
.modal h2 { font-size: 19px; }
.modal h3 { text-transform: uppercase; letter-spacing: .08em; font-size: 12px; color: var(--text-2); margin: 12px 0 6px; }
.modal ul { margin: 0 0 8px; padding-left: 20px; }
.modal li { margin-bottom: 3px; }
.x-btn { background: transparent; color: var(--text); border: 0; font-size: 26px; line-height: 1; cursor: pointer; padding: 0 6px; }
.modal-actions { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.fb-modal { background: var(--fb-modal-bg); color: var(--fb-text); border: 2px solid var(--fb-border); width: min(420px, 100%); display: flex; flex-direction: column; gap: 10px; padding: 16px; }
.fb-modal h2, .fb-modal p, .fb-modal label { color: var(--fb-text); }
.fb-modal label { text-transform: uppercase; letter-spacing: .04em; font-size: 11px; }
.fb-modal .opt { text-transform: none; letter-spacing: 0; font-weight: 500; }
.fb-modal input, .fb-modal textarea { background: var(--fb-field); color: var(--fb-text); border-color: var(--fb-border); }
.fb-modal textarea { min-height: 120px; }
.fb-modal .fb-error { color: var(--fb-error); font-weight: 700; min-height: 1.2em; font-size: 13px; }
.fb-modal .fb-note { font-size: 11px; margin: 0; }
.fb-actions { display: flex; gap: 8px; justify-content: flex-end; }
.fb-actions button { font: inherit; font-weight: 800; font-size: 13px; border-radius: 9px; padding: 7px 14px; cursor: pointer; border: 1px solid var(--fb-border); background: transparent; color: var(--fb-text); }
.fb-actions .fb-submit { background: var(--fb-submit-bg); color: var(--fb-submit-text); border-color: var(--fb-submit-bg); }
.fb-actions button:disabled { opacity: .6; cursor: wait; }
.fb-modal :focus-visible { outline-color: var(--fb-text); }

/* footer */
footer { border-top: 1px solid var(--border); background: var(--panel); padding: 14px 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.footer-line { display: flex; flex-wrap: wrap; gap: 6px 12px; justify-content: center; align-items: center; font-size: 13px; color: var(--text-2); }
.disclaimer { display: inline-block; padding: 1px 12px; border-radius: 999px; background: var(--disc-bg); color: var(--disc-text); font-size: 15px; font-weight: 800; line-height: 1.35; letter-spacing: .01em; }
.donate-coffee { display: inline-flex; align-items: center; gap: 6px; background: var(--coffee-bg); color: var(--coffee-text); font-weight: 800; font-size: 13px; padding: 4px 11px; border-radius: 8px; text-decoration: none; box-shadow: 0 3px 12px rgba(0,0,0,.25); }
.donate-coffee:hover { filter: brightness(1.12); }
.copyright { font-size: 12px; color: var(--text-2); }
.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--btn-bg); color: var(--btn-text); padding: 8px 16px; border-radius: 999px; font-weight: 800; z-index: 120; }

/* waitlist + pricing */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.tier { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; position: relative; }
.tier h2 { font-size: 20px; margin: 0; }
.tier .price { font-size: 30px; font-weight: 800; margin: 6px 0; }
.tier .price small { font-size: 14px; font-weight: 600; color: var(--text-2); }
.tier ul { padding-left: 18px; margin: 8px 0; }
.tier li { margin-bottom: 4px; }
.tier.free { border-color: var(--accent); border-width: 2px; }
.tier.after-beta { border-style: dashed; color: var(--locked); background: var(--panel-2); }
.tier.after-beta .price, .tier.after-beta h2 { filter: blur(2.5px); user-select: none; }
.tier .ribbon { position: absolute; top: 12px; right: 12px; font-size: 11px; font-weight: 800; letter-spacing: .08em; border: 1px solid var(--border); border-radius: 999px; padding: 1px 9px; color: var(--text); background: var(--panel); }
.tier.free .ribbon { background: var(--btn-bg); color: var(--btn-text); border-color: var(--btn-bg); }
.teaser { margin: 16px 0; padding: 12px 16px; border-radius: 12px; background: var(--panel-2); border: 1px solid var(--accent); font-weight: 700; }

.mt-s { margin: 6px 0 4px; } .mt-m { margin-top: 10px; } .mt-l { margin-top: 16px; }
.stat .v.pos-t { color: var(--pos); } .stat .v.neg-t { color: var(--neg); }

.cond .val-wrap .unit-hint { color: var(--text-2); font-size: 12px; }
.chart-btn { background: transparent; color: var(--accent); border: 1px solid var(--border); border-radius: 6px; padding: 1px 8px; font-size: 12px; cursor: pointer; }
.chart-btn:hover, .chart-btn:focus-visible { border-color: var(--accent); }
.flag { color: var(--warn, #d9a400); font-size: 12px; cursor: help; white-space: nowrap; }