/* cycleforecast.net - one stylesheet for every page.
   Colours are roles; dark mode changes the roles, never the pages. */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink2: #52514e;
  --muted: #76746e;
  --hair: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, .10);
  --series-1: #2a78d6;        /* the cycle line */
  --series-2: #eb6834;        /* the price after a forecast */
  --wash: rgba(42, 120, 214, .07);
  --link: #1c5cab;
  --good: #006300;
  --bad: #b02a2a;
  --track: #cde2fb;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink2: #c3c2b7;
    --muted: #9a988f;
    --hair: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, .10);
    --series-1: #3987e5;
    --series-2: #d95926;
    --wash: rgba(57, 135, 229, .10);
    --link: #86b6ef;
    --good: #0ca30c;
    --bad: #e66767;
    --track: #104281;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --ink: #f0efec; --ink2: #c3c2b7; --muted: #9a988f;
  --hair: #2c2c2a; --axis: #383835; --border: rgba(255, 255, 255, .10);
  --series-1: #3987e5; --series-2: #d95926; --wash: rgba(57, 135, 229, .10);
  --link: #86b6ef; --good: #0ca30c; --bad: #e66767; --track: #104281;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--page); color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

/* ---- header ---- */
.top { background: var(--surface); border-bottom: 1px solid var(--hair); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 22px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand svg { width: 26px; height: 26px; flex: none; }
.nav { display: flex; flex-wrap: wrap; gap: 2px 18px; margin: 0; padding: 0; list-style: none; }
.nav a { color: var(--ink2); text-decoration: none; padding: 4px 0; display: inline-block; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--series-1); }

/* ---- text ---- */
main { padding: 26px 0 56px; }
h1 { font-size: clamp(28px, 4.6vw, 40px); line-height: 1.12; letter-spacing: -.02em; margin: 0 0 10px; }
h2 { font-size: 23px; line-height: 1.25; letter-spacing: -.01em; margin: 44px 0 12px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
p { margin: 0 0 12px; }
.lead { font-size: 18px; color: var(--ink2); max-width: 720px; }
.note { color: var(--muted); font-size: 14px; }
.crumbs { font-size: 14px; color: var(--muted); margin: 0 0 14px; }
.crumbs a { color: var(--ink2); }
.prose { max-width: 720px; }
.prose li { margin-bottom: 6px; }

/* ---- cards / tiles ---- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 18px 0; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.tile .lab { font-size: 13px; color: var(--muted); }
.tile .val { font-size: 22px; font-weight: 650; line-height: 1.25; margin-top: 2px; }
.tile .sub { font-size: 14px; color: var(--ink2); margin-top: 2px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(228px, 1fr)); gap: 12px; }
a.mk { display: block; color: inherit; text-decoration: none; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px 12px; }
a.mk:hover { border-color: var(--series-1); }
a.mk .nm { font-weight: 650; font-size: 17px; }
a.mk .tk { color: var(--muted); font-size: 13px; margin-left: 6px; font-weight: 400; }
a.mk .nx { font-size: 14px; color: var(--ink2); margin-top: 6px; min-height: 2.9em; }
a.mk .nx b { color: var(--ink); font-weight: 650; }
.spark { display: block; width: 100%; height: 46px; margin-top: 8px; }
.grouplab { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 26px 0 8px; }

/* ---- the chart ---- */
.cf-chart { position: relative; margin: 18px 0 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 12px 12px; }
.cf-svg { display: block; width: 100%; height: auto; font-family: inherit; touch-action: pan-y; outline-offset: 4px; }
.only-narrow { display: none; }
@media (max-width: 640px) { .only-wide { display: none; } .only-narrow { display: block; } }
.cf-svg .win { fill: var(--wash); }
.cf-svg .grid { stroke: var(--hair); stroke-width: 1; }
.cf-svg .axis { stroke: var(--axis); stroke-width: 1; }
.cf-svg .start { stroke: var(--axis); stroke-width: 1; }
.cf-svg .guide { stroke: var(--series-1); stroke-width: 1; stroke-dasharray: 3 4; opacity: .7; }
.cf-svg .tick { fill: var(--muted); font-variant-numeric: tabular-nums; }
.cf-svg .tick.mid { text-anchor: middle; }
.cf-svg .ptitle { fill: var(--ink2); font-weight: 600; }
.cf-svg .startlab { fill: var(--muted); }
.cf-svg .price { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.cf-svg .after { fill: none; stroke: var(--series-2); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.cf-svg .real { fill: var(--series-2); stroke: var(--surface); stroke-width: 2; }
.cyc { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.cyc.hist { opacity: .42; }
.cf-svg .turn { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; paint-order: stroke; stroke-linejoin: round; }
.cf-svg .tlab { fill: var(--ink); font-weight: 650; }
.cf-svg .tkind { fill: var(--ink2); }
.cf-svg .xh { stroke: var(--ink2); stroke-width: 1; pointer-events: none; }
.sdot { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-top: 10px; font-size: 13px; color: var(--ink2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.k { display: inline-block; width: 18px; height: 0; border-top: 2px solid var(--ink); flex: none; }
.k.after { border-color: var(--series-2); }
.k.cyc { border-color: var(--series-1); }
.k.cyc.hist { opacity: .42; }
.k.tri { width: 0; height: 0; border: 6px solid transparent; border-top: 0; border-bottom: 10px solid var(--series-1); }
.k.dot { width: 9px; height: 9px; border: 0; border-radius: 50%; background: var(--series-2); }
.cf-tip { position: absolute; z-index: 3; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 4px 14px rgba(0, 0, 0, .14); padding: 8px 10px; font-size: 13px; min-width: 150px; }
.cf-tip .d { color: var(--ink2); margin-bottom: 4px; }
.cf-tip .r { display: flex; align-items: center; gap: 7px; white-space: nowrap; }
.cf-tip .r b { font-weight: 650; font-variant-numeric: tabular-nums; }
.cf-tip .r em { font-style: normal; color: var(--ink2); }

/* ---- tables ---- */
.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--hair); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
th { font-size: 13px; font-weight: 600; color: var(--muted); white-space: nowrap; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td .sm { color: var(--muted); font-size: 13px; }
.ok { color: var(--good); font-weight: 650; }
.no { color: var(--bad); font-weight: 650; }
.tag { display: inline-block; font-size: 12px; color: var(--ink2); border: 1px solid var(--axis); border-radius: 999px; padding: 1px 8px; white-space: nowrap; }
.meter { position: relative; width: 120px; height: 8px; border-radius: 4px; background: var(--track); display: inline-block; vertical-align: middle; }
.meter i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 4px; background: var(--series-1); }
.meter b { position: absolute; top: -4px; bottom: -4px; width: 2px; background: var(--ink); }
details.nums { margin: 6px 0 0; }
details.nums summary { cursor: pointer; color: var(--link); font-size: 14px; padding: 6px 0; }
details.nums .tablewrap { margin-top: 6px; }

.callout { border-left: 3px solid var(--series-1); background: var(--surface); padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 16px 0; max-width: 760px; }
.faq h3 { margin-top: 18px; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; margin: 14px 0; }
.cols .card h3 { margin-top: 0; }
.more { margin-top: 14px; }

/* ---- footer ---- */
footer { border-top: 1px solid var(--hair); background: var(--surface); padding: 22px 0 34px; font-size: 14px; color: var(--ink2); }
footer .links { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 10px; }
footer p { max-width: 820px; }