/* Question The Day — design tokens and primitives.
   Black, two greys, white. Three saturated signals. No curves anywhere. */

:root {
  --black:  #070707;
  --pit:    #0d0d0d;
  --panel:  #141414;
  --raise:  #1c1c1c;
  --line:   #262626;
  --line-2: #383838;
  --dim:    #6e6e6e;
  --mid:    #9a9a9a;
  --ink:    #ffffff;

  --yellow: #ffe500;
  --green:  #00ff41;
  --red:    #ff1f1f;

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  --u: 4px;                 /* every gap is a multiple of this */
  --rail: 48px;
  --hair: 1px solid var(--line);
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0 !important; }

html, body {
  margin: 0; padding: 0;
  background: var(--black);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body { overflow-x: hidden; }

::selection { background: var(--yellow); color: #000; }

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--yellow); outline-offset: 2px;
}

/* ---- type ---------------------------------------------------------- */
.mono  { font-family: var(--mono); }
.label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.02em; line-height: 1.04; }
h1 { font-size: clamp(28px, 5.2vw, 62px); }
h2 { font-size: clamp(20px, 2.6vw, 30px); }

p { margin: 0 0 calc(var(--u) * 3); line-height: 1.5; color: var(--mid); }

/* ---- rules and ticks ------------------------------------------------ */
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.rule-bright { height: 1px; background: var(--line-2); border: 0; }

/* a ruler strip: fine ticks every 8px, tall tick every 40px */
.ticks {
  height: 9px;
  background-image:
    repeating-linear-gradient(90deg, var(--line-2) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 8px);
  background-size: 100% 9px, 100% 4px;
  background-repeat: no-repeat;
  background-position: 0 0, 0 0;
}

/* ---- controls ------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--u);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 14px;
  background: var(--raise);
  color: var(--ink);
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: background .12s linear, color .12s linear, border-color .12s linear;
}
@media (hover: hover) {
  .btn:hover { background: var(--ink); color: #000; border-color: var(--ink); }
}
.btn[disabled] { opacity: .4; cursor: not-allowed; }
@media (hover: hover) {
  .btn-y:hover { background: var(--yellow); border-color: var(--yellow); }
  .btn-g:hover { background: var(--green);  border-color: var(--green); }
  .btn-r:hover { background: var(--red);    border-color: var(--red); color: #fff; }
  .btn-solid:hover { background: #fff; border-color: #fff; }
}

.btn-solid { background: var(--yellow); color: #000; border-color: var(--yellow); font-weight: 700; }

input[type="text"], textarea {
  width: 100%;
  font-family: var(--mono); font-size: 14px;
  background: var(--pit);
  color: var(--ink);
  border: 1px solid var(--line-2);
  padding: 11px 12px;
  resize: vertical;
}
input::placeholder, textarea::placeholder { color: #4a4a4a; }
input:focus, textarea:focus { border-color: var(--yellow); }

/* ---- chrome --------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: calc(var(--u) * 4);
  height: var(--rail);
  padding: 0 calc(var(--u) * 4);
  /* opaque: the index table scrolls under this, and a translucent bar let
     rows ghost through above the sticky header */
  background: var(--black);
  border-bottom: var(--hair);
}
.wordmark {
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  letter-spacing: 0.22em; text-transform: uppercase;
  display: flex; align-items: center; gap: 9px;
}
/* the ?! mark; its file lives with the other media */
.wordmark i {
  width: 24px; height: 22px; display: inline-block; font-style: normal; flex: 0 0 auto;
  background: url(../media/logo-mark.png) center / contain no-repeat;
}
/* five items now; let them scroll rather than fall off the edge */
.navlinks {
  display: flex; gap: calc(var(--u) * 4); margin-left: auto;
  overflow-x: auto; scrollbar-width: none; max-width: 62vw;
}
.navlinks::-webkit-scrollbar { display: none; }
.navlinks a { white-space: nowrap; }
.navlinks a {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--dim);
  padding-bottom: 2px; border-bottom: 1px solid transparent;
}
.navlinks a:hover { color: var(--ink); border-bottom-color: var(--yellow); }
.navlinks a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); }

/* ---- utility -------------------------------------------------------- */
.wrap { max-width: 1320px; margin: 0 auto; padding: 0 calc(var(--u) * 4); }

@media (max-width: 620px) {
  .topbar { gap: calc(var(--u) * 2); padding: 0 calc(var(--u) * 3); }
  .wordmark { font-size: 10px; letter-spacing: .12em; }
  .navlinks { gap: calc(var(--u) * 3); max-width: 58vw; }
  .navlinks a { font-size: 10px; letter-spacing: .08em; }
}
.stack > * + * { margin-top: calc(var(--u) * 3); }
.row { display: flex; align-items: center; gap: calc(var(--u) * 2); }
.spread { display: flex; align-items: center; justify-content: space-between; gap: calc(var(--u)*2); }
.y { color: var(--yellow); } .g { color: var(--green); } .r { color: var(--red); }
.muted { color: var(--dim); }
.sr {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; border: 0 !important;
  overflow: hidden !important; clip: rect(0 0 0 0) !important; white-space: nowrap !important;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---- tags: grey, always. The three signal colours are for actions and
   states: yellow = do this, red = recording / went wrong, green = yours / done */
.qt, .tag {
  display: inline-block;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  text-transform: uppercase; padding: 3px 7px;
  border: 1px solid var(--line-2); color: var(--mid); background: transparent;
}
.tag.solid { background: var(--raise); color: var(--ink); border-color: var(--raise); }

/* author display rules beat the [hidden] attribute — every time, site-wide */
[hidden] { display: none !important; }


/* anything a visitor typed: never let one long word widen the page */
.user-text { overflow-wrap: anywhere; word-break: normal; min-width: 0; white-space: pre-line; }

/* bigger tap targets in the nav on phones */
@media (max-width: 620px) {
  .navlinks a { padding: 10px 0; }
}

/* narrow phones: the wordmark shortens so all five links fit without scrolling */
@media (max-width: 620px) {
  .wordmark { padding: 12px 0; }
}
@media (max-width: 420px) {
  /* .topbar-qualified: field.css sets the wordmark size again for the dial and map */
  .topbar .wordmark { font-size: 0; letter-spacing: 0; }
  .topbar .wordmark::after { content: 'QTD'; content: 'QTD' / ''; font-size: 11px; letter-spacing: .18em; }
  .navlinks { max-width: none; }
}

/* phones: 16px text fields, or iOS zooms the whole page when you tap one */
@media (max-width: 900px) {
  input[type="text"], textarea { font-size: 16px; }
}