/* Reading surfaces (light) */
:root {
  /* Dark mode: soft neutral grey, similar to Discord's dark theme */
  --t-bg: #313338;
  --t-raised: #3A3C42;
  --t-rule: #45474E;
  --t-text: #E3E5E8;
  --t-muted: #A3A8B0;
  --up: #2FBF86;
  --down: #F8868F;
  --spy: #A9BAD4;
  --qqq: #E3B65A;

  --paper: var(--t-bg);
  --ink: var(--t-text);
  --muted: var(--t-muted);
  --rule: var(--t-rule);
  --link: #8DB0FF;
  --up-ink: var(--up);
  --down-ink: var(--down);

  --cond: 72%;
  --font: "Archivo", "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

/* Light mode: very pale pastel blue */
@media (prefers-color-scheme: light) {
  :root {
    --t-bg: #EDF2F9;
    --t-raised: #E1E8F3;
    --t-rule: #CCD6E4;
    --t-text: #16202C;
    --t-muted: #4F5D70;
    --up: #0E6E48;
    --down: #B3333C;
    --spy: #7A879B;
    --qqq: #A8761A;
    --link: #2B57B8;
    color-scheme: light;
  }
  .terminal :focus-visible { outline-color: #2B57B8; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font); font-size: 17px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.terminal :focus-visible { outline-color: #8DB0FF; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.num { font-variant-numeric: tabular-nums; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--paper); padding: 8px 12px; z-index: 10; }

/* Header */
.top { border-bottom: 1px solid var(--t-rule); }
.top-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-start; gap: 4px 36px; padding-top: 14px; padding-bottom: 14px; }
.brand { font-weight: 800; font-stretch: var(--cond); font-size: 26px; letter-spacing: 0.01em; color: var(--ink); text-decoration: none; }
nav { display: flex; flex-wrap: wrap; margin: 0 -10px; padding-top: 3px; }
nav a { padding: 10px; color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; }
nav a:hover { color: var(--ink); }
.intro { margin: 20px 0 28px; font-size: 19px; color: var(--muted); max-width: 46em; }

/* Terminal */
.terminal { background: var(--t-bg); color: var(--t-text); padding: 40px 0 56px; }
.quote-name { margin: 0; font-size: 15px; font-weight: 600; }
.quote-name span { font-weight: 400; color: var(--t-muted); margin-left: 6px; }
.quote-price { margin: 2px 0 0; font-size: clamp(52px, 8vw, 84px); line-height: 1; font-weight: 700; font-stretch: var(--cond); letter-spacing: -0.01em; }
.quote-change { margin: 8px 0 28px; font-size: 17px; font-weight: 600; min-height: 1.5em; }
.quote-change .asof { color: var(--t-muted); font-weight: 400; }
.up { color: var(--up); }
.down { color: var(--down); }
.terminal .up { color: var(--up); }
.terminal .down { color: var(--down); }
.reading .up { color: var(--up-ink); }
.reading .down { color: var(--down-ink); }

.legend { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 10px; font-size: 14px; color: var(--t-muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.key { display: inline-block; width: 20px; height: 0; border-top: 2px dashed var(--spy); }
.key-port { border-top: 3px solid var(--up); }
.key-qqq { border-top: 2px dotted var(--qqq); }

.chart { position: relative; height: 320px; }
.chart svg { display: block; width: 100%; height: 100%; touch-action: pan-y; }
.chart .grid { stroke: var(--t-rule); stroke-width: 1; }
.chart .ax { fill: var(--t-muted); font-size: 12px; font-family: var(--font); }
.chart .cursor { stroke: var(--t-muted); stroke-width: 1; }
.chart-empty { height: 100%; display: flex; align-items: center; justify-content: center; text-align: center; padding: 24px; color: var(--t-muted); border: 1px dashed var(--t-rule); border-radius: 6px; }
.tooltip {
  position: absolute; top: 6px; pointer-events: none; display: none; white-space: nowrap;
  background: var(--t-raised); color: var(--t-text); border-radius: 6px; padding: 8px 10px; font-size: 13px; line-height: 1.5;
}

.block { margin-top: 48px; }
.panel-h { margin: 0 0 14px; font-size: 22px; font-weight: 700; font-stretch: var(--cond); }
.panel-note { margin: 10px 0 0; font-size: 14px; color: var(--t-muted); }

/* Heat map */
.treemap { position: relative; width: 100%; height: 540px; }
@media (max-width: 640px) { .treemap { height: 560px; } }
.tile { position: absolute; display: block; padding: 2px; color: #FFFFFF; text-decoration: none; }
.tile-in { height: 100%; border-radius: 4px; padding: 10px 12px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; }
.tile:hover .tile-in { filter: brightness(1.12); }
.tile-name { display: block; font-weight: 700; font-stretch: var(--cond); font-size: 22px; line-height: 1.15; }
.tile-meta { display: block; font-size: 15px; font-weight: 600; }
.tile-names { font-size: 13.5px; line-height: 1.4; opacity: 0.85; }
.tile.small .tile-in { padding: 7px 8px; }
.tile.small .tile-name { font-size: 15px; }
.tile.small .tile-meta { font-size: 12px; }
.tile.tiny .tile-name { font-size: 13px; overflow-wrap: anywhere; hyphens: auto; }
.tile.tiny .tile-meta { font-size: 11.5px; }

/* Theses table */
.book-head, .row-sum { display: grid; grid-template-columns: minmax(0, 1fr) 80px 100px 28px; align-items: center; gap: 12px; }
.book-head { padding: 0 16px 0 20px; font-size: 13px; color: var(--t-muted); }
.book-head::after { content: ""; }
.r { text-align: right; }
.book { display: grid; gap: 10px; margin-top: 10px; }
.book > details {
  border: 1px solid color-mix(in srgb, var(--tc) 45%, transparent);
  border-left: 4px solid var(--tc);
  border-radius: 8px; background: color-mix(in srgb, var(--tc) 6%, var(--t-bg));
  scroll-margin-top: 16px; overflow: hidden;
}
.book > details[open] { background: color-mix(in srgb, var(--tc) 9%, var(--t-bg)); }
.row-sum { padding: 12px 16px; min-height: 64px; cursor: pointer; list-style: none; color: var(--t-text); }
.row-sum::-webkit-details-marker { display: none; }
.row-sum:hover { background: color-mix(in srgb, var(--tc) 12%, transparent); }
.b-name { display: block; font-weight: 700; font-stretch: var(--cond); font-size: 19px; line-height: 1.2; }
.b-sub { display: block; font-size: 13px; color: var(--t-muted); }
.b-weight { font-size: 16px; font-weight: 600; }
.chip { justify-self: end; min-width: 84px; text-align: center; border-radius: 5px; padding: 6px 8px; font-size: 15px; font-weight: 700; background: var(--t-raised); color: var(--t-text); }
.terminal .chip.up { background: #17845B; color: #FFFFFF; }
.terminal .chip.down { background: #B9333F; color: #FFFFFF; }
.chev { justify-self: end; width: 10px; height: 10px; border-right: 2px solid var(--t-muted); border-bottom: 2px solid var(--t-muted); transform: rotate(45deg) translate(-2px, -2px); }
.book > details[open] > summary .chev { transform: rotate(-135deg) translate(-2px, -2px); }
.row-body { padding: 4px 16px 18px; }
.row-figs { display: flex; flex-wrap: wrap; gap: 6px 28px; margin: 0 0 12px; font-size: 14px; color: var(--t-muted); }
.row-figs b { color: var(--t-text); font-weight: 700; margin-left: 6px; }
.terminal table { width: 100%; border-collapse: collapse; font-size: 14px; }
.terminal th { font-weight: 500; color: var(--t-muted); }
.terminal th, .terminal td { text-align: left; padding: 7px 10px 7px 0; border-bottom: 1px solid var(--t-rule); }
.terminal td.r, .terminal th.r { text-align: right; }
.writeup { margin-top: 14px; border-top: 1px solid var(--t-rule); }
.writeup > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between;
  min-height: 48px; font-size: 15px; font-weight: 700; color: var(--t-text);
}
.writeup > summary::-webkit-details-marker { display: none; }
.writeup > summary .chev { width: 8px; height: 8px; }
.writeup[open] > summary .chev { transform: rotate(-135deg) translate(-2px, -2px); }
.writeup-text { max-width: 44em; padding-bottom: 6px; }
.writeup-text p { margin: 0 0 12px; font-size: 16.5px; line-height: 1.65; color: var(--t-text); }
.writeup-text .placeholder { color: var(--t-muted); }
.writeup .milestones { list-style: none; padding: 0; margin: 8px 0 0; }
.writeup .milestones li { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--t-rule); font-size: 15px; }
.writeup .status { flex: none; font-size: 13px; font-weight: 600; color: var(--t-muted); }
@media (max-width: 480px) { .book-head, .row-sum { grid-template-columns: minmax(0, 1fr) 46px 80px 16px; gap: 8px; } .row-sum { padding: 12px 12px; } .row-body { padding: 4px 12px 16px; } .book-head { padding: 0 12px 0 16px; } }

/* Reading sections */
.reading { padding: 64px 0; }
.reading + .reading { padding-top: 8px; }
.reading.first { padding-top: 56px; border-top: 1px solid var(--t-rule); }
.section-h { margin: 0 0 8px; font-size: 34px; font-weight: 700; font-stretch: var(--cond); line-height: 1.15; }
.section-note { margin: 0 0 20px; color: var(--muted); max-width: 42em; }
.thesis { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 16px 48px; padding: 30px 0; border-top: 1px solid var(--rule); }
@media (max-width: 760px) { .thesis { grid-template-columns: 1fr; } }
.thesis h3 { margin: 0; font-size: 28px; font-weight: 700; font-stretch: var(--cond); line-height: 1.1; }
.t-weight { margin: 4px 0 0; font-size: 14px; color: var(--muted); }
.t-figs { margin: 14px 0 0; display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 2px 18px; font-size: 13px; color: var(--muted); }
.t-figs b { display: block; font-size: 18px; font-weight: 700; font-stretch: var(--cond); color: var(--ink); }
.summary { margin: 0; font-size: 18px; line-height: 1.65; max-width: 38em; }
.placeholder { color: var(--muted); }
.milestones { list-style: none; padding: 0; margin: 18px 0 0; max-width: 38em; }
.milestones li { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--rule); font-size: 15px; }
.status { flex: none; font-size: 13px; font-weight: 600; color: var(--muted); }
.reading details { margin-top: 16px; max-width: 38em; }
.reading summary { cursor: pointer; color: var(--link); font-size: 15px; font-weight: 600; padding: 10px 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { font-weight: 600; color: var(--muted); }
th, td { text-align: left; padding: 7px 10px 7px 0; border-bottom: 1px solid var(--rule); }
td.r, th.r { text-align: right; }
.empty { margin: 0; padding: 20px 0; border-top: 1px solid var(--rule); color: var(--muted); }
dl.method { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 24px 48px; margin: 20px 0 0; }
dt { font-weight: 700; }
dd { margin: 4px 0 0; color: var(--muted); }

footer { border-top: 1px solid var(--rule); padding: 36px 0 60px; font-size: 15px; color: var(--muted); }
footer p { margin: 0 0 8px; max-width: 46em; }
footer .author { color: var(--ink); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }