/* common.css — the ONE look of the site: every page links this file and nav.css, and writes only its own layout.
   (The Viewer has its own sheet, viewer/css/style.css, on the same colours.)

   The idea: the interface is quiet — near-black surfaces, hairlines, one blue for what can be clicked — so the only
   colour on a page is the DATA. Green and red are never interface colours here: they mean calls / puts and up / down. */
:root{
  --bg:#0b0e14; --surface:#121620; --surface-2:#181d29; --line:#242b3a; --line-2:#34405a;
  --text:#eef1f6; --text-2:#b9c1cf; --muted:#8792a6;
  --accent:#5aa9ff; --accent-ink:#06111f; --accent-soft:rgba(90,169,255,.12); --accent-line:rgba(90,169,255,.45);
  --up:#35c27a; --dn:#ff5c6c; --warn:#ffb547;
  /* the seven categories of the series — one colour each, the same on every page (validated as a set on --surface) */
  --c-price:#c3c9d4; --c-iv:#9085e9; --c-flow:#3987e5; --c-dealer:#199e70; --c-side:#d55181; --c-levels:#c98500; --c-quality:#d95926;
  --radius:12px; --max:1160px;
  --mono:ui-monospace,"Cascadia Mono","SF Mono",Consolas,monospace;
  /* names the older page scripts still use */
  --panel:var(--surface); --panel2:var(--surface-2); --accent2:var(--accent); --neg:var(--dn);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em;font-weight:700;text-wrap:balance}
h1{font-size:clamp(2.1rem,4.6vw,3.4rem);letter-spacing:-.03em}
h2{font-size:clamp(1.55rem,2.8vw,2.15rem)}
h3{font-size:1.1rem;letter-spacing:-.01em}
p{margin:0 0 1em;color:var(--text-2)}
b,strong{color:var(--text);font-weight:650}
code,.mono{font-family:var(--mono);font-size:.9em}
code{background:var(--surface-2);border:1px solid var(--line);border-radius:5px;padding:0 5px;color:var(--text)}
.muted{color:var(--muted)}
.eyebrow{color:var(--accent);font-weight:600;font-size:.8rem;letter-spacing:.09em;text-transform:uppercase;margin-bottom:.9rem}
.lead{font-size:1.15rem;line-height:1.55;color:var(--text-2);max-width:680px}
.note{font-size:.85rem;color:var(--muted)}
.link{color:var(--accent);font-weight:600} .link:hover{text-decoration:underline}
section{padding:84px 0}
section.band{background:var(--surface);border-block:1px solid var(--line)}
main{padding:48px 0 88px}
main h1{font-size:clamp(1.9rem,3.6vw,2.7rem)}
.shead{max-width:760px;margin-bottom:34px}
.shead p{font-size:1.05rem;margin:0}

/* ── buttons ─────────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.72rem 1.25rem;border-radius:9px;font:inherit;font-weight:600;line-height:1.2;border:1px solid var(--line-2);background:transparent;color:var(--text);cursor:pointer;transition:background .15s,border-color .15s,filter .15s;white-space:nowrap}
.btn:hover{background:var(--surface-2);border-color:var(--muted)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.primary:hover{background:var(--accent);filter:brightness(1.1)}
.btn.ghost{background:transparent}
.btn.sm{padding:.36rem .8rem;font-size:.86rem;border-radius:8px}
.btn.lg{padding:.9rem 1.5rem;font-size:1.03rem}
.btn:disabled{opacity:.45;cursor:not-allowed;filter:none}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* ── surfaces ────────────────────────────────────────────────────────────── */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
section.band .card{background:var(--bg)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:980px){.grid4{grid-template-columns:1fr 1fr}}
@media(max-width:820px){.grid2,.grid3{grid-template-columns:1fr}}
@media(max-width:560px){.grid4{grid-template-columns:1fr}}

/* ── the two plans, wherever they are named ──────────────────────────────── */
.badge,.pl{display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.16rem .55rem;border-radius:99px;vertical-align:middle;white-space:nowrap;line-height:1.5}
.badge.free,.pl.f{background:transparent;color:var(--text-2);box-shadow:inset 0 0 0 1px var(--line-2)}
.badge.member,.pl.m{background:var(--accent-soft);color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent-line)}

/* ── a dot of the category's colour beside its name ──────────────────────── */
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--c,var(--muted));flex:none}
.g-price{--c:var(--c-price)} .g-iv{--c:var(--c-iv)} .g-flow{--c:var(--c-flow)} .g-dealer{--c:var(--c-dealer)} .g-side{--c:var(--c-side)} .g-levels{--c:var(--c-levels)} .g-quality{--c:var(--c-quality)}

/* ── messages ────────────────────────────────────────────────────────────── */
.msg{border-radius:10px;padding:11px 15px;font-size:.93rem;margin:14px 0;border:1px solid var(--line);background:var(--surface);color:var(--text-2)}
.msg.err{border-color:rgba(255,92,108,.5);background:rgba(255,92,108,.07);color:#ffb3bb}
.msg.ok{border-color:var(--accent-line);background:var(--accent-soft);color:var(--text)}
.msg.warn{border-color:rgba(255,181,71,.45);background:rgba(255,181,71,.06);color:var(--text)}

/* ── forms ───────────────────────────────────────────────────────────────── */
label.f{display:block;font-size:.86rem;color:var(--text-2);margin:16px 0 5px}
input.t,select.t{width:100%;background:var(--bg);border:1px solid var(--line-2);color:var(--text);border-radius:9px;padding:.66rem .85rem;font:inherit}
input.t::placeholder{color:var(--muted)}
input.t:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.seg{display:inline-flex;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:3px;gap:2px}
.seg button{background:none;border:0;color:var(--text-2);padding:.42rem .9rem;border-radius:7px;font:inherit;font-size:.9rem;cursor:pointer}
.seg button:hover{color:var(--text)}
.seg button.on{background:var(--surface-2);color:var(--text);box-shadow:inset 0 0 0 1px var(--line-2)}

/* ── tables ──────────────────────────────────────────────────────────────── */
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:.74rem;text-transform:uppercase;letter-spacing:.06em}
td.s{font-weight:700;font-family:var(--mono)} td.n{color:var(--text-2);font-size:.86rem;white-space:nowrap;font-variant-numeric:tabular-nums}
.tbl{overflow-x:auto}
.pos{color:var(--up)} .neg{color:var(--dn)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.chips span{background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:2px 9px;font-size:.8rem;font-family:var(--mono);color:var(--text-2)}

/* ── a window over the page: the full lists, a sample file ───────────────── */
.modal{position:fixed;inset:0;z-index:50;background:rgba(4,6,10,.78);display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.mbox{background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius);width:min(1100px,100%);max-height:88vh;display:flex;flex-direction:column}
.mhead{display:flex;gap:12px;justify-content:space-between;align-items:flex-start;padding:20px 22px;border-bottom:1px solid var(--line)}
.mhead h3{margin:0 0 4px} .mhead p{margin:0;font-size:.9rem}
.mx{background:none;border:0;color:var(--muted);font-size:1.6rem;cursor:pointer;line-height:1;padding:0 4px} .mx:hover{color:var(--text)}
.mbody{overflow:auto;padding:0 22px}
.mbody table{font-size:.82rem;white-space:nowrap;font-variant-numeric:tabular-nums}
.mbody th{position:sticky;top:0;background:var(--surface)}
.mbody th.sortable{cursor:pointer} .mbody th.sortable:hover{color:var(--text)}
.mbody td.g{font-weight:700;font-family:var(--mono)}
.mfoot{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding:14px 22px;border-top:1px solid var(--line);font-size:.86rem;color:var(--muted)}
.msearch{margin-top:12px;width:100%;max-width:340px}

/* ── the page's last lines ───────────────────────────────────────────────── */
footer{border-top:1px solid var(--line);padding:40px 0 56px;color:var(--muted);font-size:.88rem}
footer .frow{display:flex;flex-wrap:wrap;gap:18px 40px;justify-content:space-between;align-items:flex-start}
footer .fl{display:flex;flex-wrap:wrap;gap:8px 22px}
footer .fl a{color:var(--text-2)} footer .fl a:hover{color:var(--text)}
footer .legal{margin:22px 0 0;max-width:760px;line-height:1.55}

/* ── the series explorer (explorer.js): categories → series → a chart of SPY ─ */
.xp{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.xp-top{padding:12px 14px;border-bottom:1px solid var(--line)}
.xp-cats{display:flex;flex-wrap:wrap;gap:6px}
.xp-cats button{display:inline-flex;align-items:center;gap:7px;background:transparent;border:1px solid var(--line);color:var(--text-2);border-radius:99px;padding:.32rem .7rem;font:inherit;font-size:.85rem;cursor:pointer;white-space:nowrap}
.xp-cats button:hover{border-color:var(--line-2);color:var(--text)}
.xp-cats button.on{background:var(--surface-2);border-color:var(--muted);color:var(--text)}
.xp-cats button small{color:var(--muted);font-size:.8rem;font-variant-numeric:tabular-nums}
.xp-body{display:grid;grid-template-columns:330px minmax(0,1fr)}
.xp-side{border-right:1px solid var(--line);min-width:0}
.xp-find{padding:10px 12px;border-bottom:1px solid var(--line)}
input.t.xp-q{padding:.44rem .75rem;font-size:.9rem}
.xp-list{position:relative;max-height:520px;overflow:auto;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.xp-about{padding:14px 16px 12px;font-size:.88rem;color:var(--text-2);border-bottom:1px solid var(--line);line-height:1.5}
.xp-about b{display:block;font-size:.72rem;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:3px}
.xp-gh{display:flex;align-items:center;gap:8px;padding:12px 16px 6px;font-size:.72rem;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);font-weight:600}
.xp-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;align-items:center;width:100%;text-align:left;background:transparent;border:0;border-left:3px solid transparent;color:var(--text);padding:8px 14px 8px 13px;font:inherit;font-size:.92rem;cursor:pointer}
.xp-row:hover{background:var(--surface-2)}
.xp-row.on{background:var(--surface-2);border-left-color:var(--c,var(--accent))}
.xp-row .k{grid-column:1;font-family:var(--mono);font-size:.74rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.xp-row .nm{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.xp-row .badge{grid-row:1 / span 2;grid-column:2;font-size:.58rem}
.xp-row .badge.member{background:transparent;box-shadow:none;padding-right:0}
.xp-none{padding:22px 16px;color:var(--muted);font-size:.9rem}
.xp-main{padding:18px 20px 16px;min-width:0}
.xp-h{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:baseline}
.xp-h h3{margin:0;font-size:1.3rem}
.xp-h .k{font-family:var(--mono);font-size:.82rem;color:var(--muted)}
.xp-meta{display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center;margin:8px 0 2px;font-size:.84rem;color:var(--text-2)}
.xp-meta .u{border:1px solid var(--line);border-radius:6px;padding:0 7px;font-size:.76rem;color:var(--muted)}
.xp-what{font-size:.93rem;color:var(--text-2);margin:8px 0 12px;line-height:1.55;max-width:760px}
.xp-what a{color:var(--accent);cursor:pointer;white-space:nowrap}
.xp-chart{position:relative}
.xp-chart svg{display:block;width:100%;height:auto;touch-action:pan-y}
.xp-chart text{font:11px system-ui,-apple-system,"Segoe UI",sans-serif;fill:var(--muted);font-variant-numeric:tabular-nums}
.xp-chart .pl-t{fill:var(--text-2);font-size:11.5px;font-weight:600}
.xp-tip{position:absolute;top:8px;pointer-events:none;background:var(--bg);border:1px solid var(--line-2);border-radius:8px;padding:8px 11px;font-size:.8rem;line-height:1.5;white-space:nowrap;opacity:0;transition:opacity .08s;z-index:2}
.xp-tip b{display:block;color:var(--text-2);font-weight:600;font-size:.76rem;margin-bottom:2px}
.xp-tip span{display:flex;align-items:center;gap:7px;color:var(--muted)}
.xp-tip span i{width:12px;height:2px;border-radius:1px;display:inline-block}
.xp-tip span em{font-style:normal;color:var(--text);font-weight:650;font-variant-numeric:tabular-nums;margin-right:2px}
.xp-foot{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;justify-content:space-between;margin-top:8px;font-size:.82rem;color:var(--muted)}
.xp-leg{display:flex;flex-wrap:wrap;gap:6px 16px;align-items:center}
.xp-leg span{display:inline-flex;align-items:center;gap:7px}
.xp-leg i{width:14px;height:2px;border-radius:1px;display:inline-block}
.xp-foot button{background:none;border:0;color:var(--accent);font:inherit;font-size:.82rem;cursor:pointer;padding:0}
.xp-foot button:hover{text-decoration:underline}
.xp-rows{margin-top:10px;border:1px solid var(--line);border-radius:10px;overflow:auto}
.xp-rows table{font-size:.8rem;font-variant-numeric:tabular-nums}
.xp-rows th,.xp-rows td{padding:6px 12px;text-align:right;white-space:nowrap}
.xp-rows th:first-child,.xp-rows td:first-child{text-align:left}
.xp-rows th{font-family:var(--mono);text-transform:none;letter-spacing:0;font-size:.76rem}
.xp-rows tr:last-child td{border-bottom:0}
@media(max-width:900px){
  .xp-body{grid-template-columns:1fr}
  .xp-main{order:1;border-bottom:1px solid var(--line)}
  .xp-side{order:2;border-right:0}
  .xp-list{max-height:340px}
}