/* ═══════════════════════════════════════════════════
   ROUND AND ROUND
   Third page of the bus tracker. Same dark room as
   All Through the Town, turned into a long read:
   margin notes on the left, charts on the right.
   Chartreuse is our measurement, periwinkle is the
   earlier period, orange is the MTA's own numbers.
   ═══════════════════════════════════════════════════ */

:root {
  --bg: #07070a;
  --bg-2: #0e0e12;
  --bg-3: #16161c;
  --ink: rgba(255,255,255,0.92);
  --ink-2: rgba(255,255,255,0.58);
  --ink-3: rgba(255,255,255,0.34);
  --hair: rgba(255,255,255,0.07);
  --hair-2: rgba(255,255,255,0.14);

  --ours: #dde44c;
  --base: #9b9fbc;
  --mta: #ff7c53;
  --rose: #f4568a;

  --b-M: #dde44c;
  --b-B: #ff7c53;
  --b-Q: #4fb3e8;
  --b-Bx: #e7466d;
  --b-S: #62c26b;
  --b-X: #b7a6e8;

  --font: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { background: var(--bg); }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--ink); text-decoration-color: var(--hair-2); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ours); }

.page { max-width: 1200px; margin: 0 auto; padding: 0 32px 80px; }

/* ── masthead ── */
.masthead { padding: 28px 0 56px; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px 28px; font-size: 13px; font-weight: 700; }
.crumbs a { text-decoration: none; color: var(--ink); }
.crumbs a span { color: var(--ink-3); font-weight: 500; margin-left: 4px; }
.crumbs a:hover span { color: var(--ours); }
.crumbs a:nth-child(2) { color: var(--rose); }

.title {
  margin-top: 64px;
  font-size: clamp(56px, 11vw, 148px);
  line-height: 0.86;
  font-weight: 900;
  letter-spacing: -0.045em;
}
.title span { color: var(--ours); }
.dek { margin-top: 28px; max-width: 640px; font-size: 21px; line-height: 1.4; color: var(--ink); }
.edition { margin-top: 14px; font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.edition b { color: var(--ink); font-weight: 700; }

/* ── section grid ── */
.block {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 48px;
  padding: 56px 0;
}
.block + .block { border-top: 1px solid var(--hair); }
.side h2 { font-size: 26px; line-height: 1.1; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 14px; }
.side p { color: var(--ink-2); font-size: 14px; margin-bottom: 12px; }
.side p.note { font-size: 12.5px; color: var(--ink-3); }
.main { min-width: 0; }

/* ── what we've learned ── */
.learned-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 28px 40px; }
.learned-list li { font-size: 16.5px; line-height: 1.5; }
.learned-list li b {
  display: block; margin-bottom: 4px;
  font-size: 13px; font-weight: 800; color: var(--ours);
}
.learned-list li:last-child:nth-child(odd) { grid-column: 1 / -1; max-width: 620px; }

/* ── controls ── */
.chart-head { display: flex; justify-content: flex-end; margin-bottom: 4px; min-height: 22px; }
.zero { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; color: var(--ink-2); cursor: pointer; user-select: none; }
.zero input { appearance: none; width: 13px; height: 13px; border: 1px solid var(--hair-2); background: transparent; cursor: pointer; position: relative; }
.zero input:checked { background: var(--ours); border-color: var(--ours); }
.zero input:checked::after { content: ''; position: absolute; left: 3px; top: 0; width: 4px; height: 8px; border: solid var(--bg); border-width: 0 2px 2px 0; transform: rotate(45deg); }

.seg { display: inline-flex; margin: 6px 0 16px; border: 1px solid var(--hair-2); }
.seg button {
  font: 700 12.5px var(--font); color: var(--ink-2);
  background: transparent; border: 0; padding: 7px 13px; cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--hair-2); }
.seg button.on { background: var(--ink); color: var(--bg); }
.seg button:not(.on):hover { color: var(--ink); }

.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.legend span { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; }
.legend b { font-weight: 500; color: var(--ink-2); }
.sw { display: inline-block; width: 18px; height: 0; border-top: 2.5px solid; }
.sw.recent { border-color: var(--ours); }
.sw.base { border-color: var(--base); border-top-width: 1.5px; }
.sw.riders { border-color: var(--rose); }
.sw.prior { border-color: var(--ink-3); border-top-style: dashed; border-top-width: 1.5px; }
.key.hollow { display: inline-block; width: 9px; height: 9px; border: 1.5px solid var(--ink-2); border-radius: 50%; vertical-align: -1px; margin-right: 2px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 14px; }
.chips button {
  display: inline-flex; align-items: center; gap: 6px;
  font: 700 12px var(--font); color: var(--ink);
  background: transparent; border: 1px solid var(--hair-2); padding: 5px 9px; cursor: pointer;
}
.chips button i { width: 8px; height: 8px; border-radius: 50%; }
.chips button.off { color: var(--ink-3); }
.chips button.off i { opacity: 0.25; }

/* ── charts ── */
.chart { position: relative; width: 100%; }
.chart + .chart { margin-top: 10px; }
.chart svg { display: block; width: 100%; overflow: visible; }
.chart text { font-family: var(--font); fill: var(--ink-3); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart .ctitle { fill: var(--ink); font-size: 13px; font-weight: 700; }
.chart .csub { fill: var(--ink-3); font-size: 12px; }
.chart .grid line { stroke: var(--hair); }
.chart .grid line.zero-line { stroke: var(--hair-2); }
.chart .band { fill: rgba(255,255,255,0.028); }
.chart .band-label { fill: var(--ink-3); font-size: 10.5px; }
.chart .guide { stroke: var(--hair-2); stroke-dasharray: 2 3; }
.chart .dlabel { font-weight: 700; font-size: 12px; }
.chart .rlabel { fill: var(--ink); font-size: 11px; font-weight: 700; paint-order: stroke; stroke: var(--bg); stroke-width: 3px; }

.tip {
  position: fixed; z-index: 50; pointer-events: none;
  background: #111117; border: 1px solid var(--hair-2);
  padding: 8px 11px; font-size: 12.5px; line-height: 1.45;
  min-width: 140px; max-width: 260px;
  font-variant-numeric: tabular-nums;
}
.tip .t-h { font-weight: 800; margin-bottom: 3px; }
.tip .t-r { display: flex; justify-content: space-between; gap: 14px; color: var(--ink-2); }
.tip .t-r b { color: var(--ink); font-weight: 700; }
.tip .t-n { color: var(--ink-3); font-size: 11.5px; margin-top: 3px; }

/* ── slowest list ── */
.slowest { margin-top: 28px; }
.slowest h3 { font-size: 13px; font-weight: 800; margin-bottom: 10px; }
.slowest ol { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px 16px; counter-reset: s; }
.slowest li { counter-increment: s; font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.slowest li b { display: block; color: var(--ink); font-size: 16px; font-weight: 800; }
.slowest li i { font-style: normal; display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }

/* ── official comparison ── */
.cmp-table { width: 100%; border-collapse: collapse; font-size: 13.5px; font-variant-numeric: tabular-nums; margin-top: 8px; }
.cmp-table th { text-align: left; font-size: 12px; font-weight: 700; color: var(--ink-3); padding: 0 12px 8px 0; }
.cmp-table td { padding: 10px 12px 10px 0; vertical-align: top; border-top: 1px solid var(--hair); }
.cmp-table td:first-child { min-width: 150px; }
.cmp-table td.num { font-weight: 700; min-width: 90px; }
.cmp-table td.ours { color: var(--ours); }
.cmp-table td.mta { color: var(--mta); }
.cmp-table td.why { color: var(--ink-2); font-size: 13px; }
.flags { list-style: none; display: grid; gap: 22px; margin-top: 30px; }
.flags li { font-size: 15px; }
.flags li b { display: block; font-size: 13px; font-weight: 800; color: var(--mta); margin-bottom: 3px; }
.flags li span { display: block; color: var(--ink-2); font-size: 13.5px; margin-top: 4px; }
.sw.mta { border-color: var(--mta); }
.sw.ours { border-color: var(--ours); }

/* ── footer ── */
.foot { border-top: 1px solid var(--hair); padding-top: 32px; display: grid; grid-template-columns: 300px minmax(0,1fr); gap: 48px; }
.method { grid-column: 2; }
.method summary { cursor: pointer; font-weight: 800; font-size: 15px; list-style: none; }
.method summary::before { content: '+ '; color: var(--ours); }
.method[open] summary::before { content: '\2013 '; }
.method-body { margin-top: 16px; max-width: 720px; }
.method-body p { color: var(--ink-2); font-size: 14px; margin-bottom: 12px; }
.method-body strong { color: var(--ink); }
.caution-wrap { grid-column: 2; position: relative; }
.ai-caution-btn {
  background: transparent; color: #b8697a;
  border: 1px solid rgba(184,105,122,0.35);
  font: 700 10px var(--font); letter-spacing: 0.03em;
  padding: 4px 7px; cursor: pointer; opacity: 0.8;
}
.ai-caution-btn:hover { opacity: 1; color: #e08a9c; }
.ai-caution-pop {
  position: absolute; bottom: calc(100% + 8px); left: 0; z-index: 40; width: 320px;
  background: #16213e; color: #dbe2f4; border: 1px solid #2a3a66;
  padding: 11px 13px; font-size: 12px; line-height: 1.5;
}

/* ── narrow screens ── */
@media (max-width: 900px) {
  .page { padding: 0 16px 60px; }
  .block, .foot { grid-template-columns: 1fr; gap: 20px; padding: 40px 0; }
  .foot { padding-top: 28px; }
  .method, .caution-wrap { grid-column: 1; }
  .learned-list { grid-template-columns: 1fr; gap: 20px; }
  .title { margin-top: 44px; }
  .dek { font-size: 18px; }
  .slowest ol { grid-template-columns: repeat(2, 1fr); }
  .ai-caution-pop { width: min(320px, calc(100vw - 32px)); }
}
.nowcast { margin-top: 22px; padding: 14px 16px; border: 1px solid var(--hair-2); border-left: 3px solid var(--mta); border-radius: 4px; font-size: 14.5px; color: var(--ink); max-width: 760px; }
.nowcast span { display: block; margin-top: 6px; color: var(--ink-2); font-size: 13px; }
.crumbs a:nth-child(3), .crumbs a:nth-child(4) { color: var(--ink); }
@media (max-width: 600px) {
  .cmp-table { display: block; overflow-x: auto; }
  .cmp-table td:first-child { min-width: 110px; }
  .cmp-table td.why { min-width: 220px; }
}