/* =========================================================================
   RoboLinkLab — page identity on top of kit.css.

   Violet — the sixth and last distinct shade on the wireless track, after
   WaveLab's coral, ModLab's orange, WiFiLab's sky, BleLab's indigo and
   IoTLab's lime. It reads as the colour of the thing being decided rather
   than measured, which is what this lab is about.

   Inside the figures violet is the link and what it costs, blue is the
   machine's own dynamics, gold is what has to be waited for, mint is what
   still fits and red is what does not.
   ========================================================================= */
:root {
  --bp-cyan: #b197fc;          /* primary accent */
  --bp-blue: #d0bfff;          /* secondary */
  --bp-mark: #b197fc;
  --note-accent: #b197fc;
  --calc-col: 350px;
  --page-max: 1440px;
}

/* A faint set of vertical rules behind the page: the sample instants of a
   loop, which is the picture this lab keeps returning to. Quiet enough to
   be atmosphere rather than decoration. */
body {
  background-image:
    repeating-linear-gradient(90deg,
      rgba(177, 151, 252, 0.045) 0 1px, transparent 1px 74px);
}

.hint { font-size: 0.76rem; color: var(--bp-ink-dim); line-height: 1.55; margin-top: 0.5rem; }
.hint b { color: var(--bp-cyan); }

.results-col { min-width: 0; }
.results-col svg { max-width: 100%; }

/* -------------------------------- inputs -------------------------------- */
.mini-field { margin-bottom: 0.6rem; }
.mini-field label {
  display: block; font-size: 0.68rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--bp-ink-dim); margin-bottom: 0.25rem;
  font-family: var(--mono);
}
.mini-field input[type="range"] { width: calc(100% - 3.6rem); vertical-align: middle; }
.mini-field output { font-family: var(--mono); font-size: 0.85rem; color: var(--bp-cyan); }
.mini-field select {
  width: 100%; box-sizing: border-box;
  font-family: var(--mono); font-size: 0.85rem;
  background: var(--bp-bg); color: var(--bp-ink);
  border: 1px solid var(--bp-line); border-radius: 7px;
  padding: 0.38rem 0.45rem;
}
.mini-field select:focus { outline: none; border-color: var(--bp-cyan); }

/* ------------------------------ result cards ----------------------------- */
.vres {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.5rem; margin-bottom: 0.9rem;
}
.vres .card {
  border: 1px solid var(--bp-line); border-radius: 9px;
  background: var(--bp-panel); padding: 0.55rem 0.7rem;
}
.vres .card .k {
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--bp-ink-dim);
}
.vres .card .v {
  font-family: var(--mono); font-size: 1.12rem; font-weight: 700;
  color: var(--bp-cyan); margin-top: 0.15rem; overflow-wrap: anywhere;
}
.vres .card .x {
  font-family: var(--mono); font-size: 0.68rem; color: var(--bp-ink-dim);
  margin-top: 0.15rem; overflow-wrap: anywhere;
}
/* The phase margin is the verdict of this whole calculator — whether the
   loop may run through the link at all — so it is allowed to shout. */
.vres .card.verdict .v { font-size: 1.4rem; }
.vres .card.ok .v { color: #5fe3a1; }
.vres .card.warn .v { color: #ffc94d; }
.vres .card.bad .v { color: #ff6b6b; }
.vres .card.wide { grid-column: 1 / -1; }

.vnote {
  border: 1px solid var(--bp-line); border-left-width: 4px;
  border-left-color: #ffd43b; border-radius: 9px;
  background: var(--bp-panel); padding: 0.5rem 0.8rem; margin-bottom: 0.8rem;
  font-size: 0.8rem; line-height: 1.55; color: var(--bp-ink-dim);
}
.vnote b { color: #ffd43b; }
.vnote + .vnote { margin-top: -0.4rem; }

/* --------------------------------- toggles ------------------------------- */
.seg {
  display: inline-flex; border: 1px solid var(--bp-line); border-radius: 7px;
  overflow: hidden; flex-wrap: wrap;
}
.seg button {
  font-family: var(--mono); font-size: 0.72rem; cursor: pointer;
  background: transparent; color: var(--bp-ink-dim);
  border: none; padding: 0.3rem 0.62rem; transition: 0.16s;
}
.seg button.active { background: var(--bp-cyan); color: var(--bp-bg); font-weight: 700; }
.seg button:not(.active):hover { color: var(--bp-ink); }

.row-between { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; }

/* --------------------------------- tables -------------------------------- */
.res-table td.mono, .res-table th.mono { font-family: var(--mono); }
.res-table td.num { text-align: right; font-family: var(--mono); }
.res-table td.good { color: #5fe3a1; }
.res-table td.bad { color: #ff6b6b; font-weight: 700; }
/* The budget table marks the rows the radio is responsible for, so that
   the eye can see at a glance how small a share they usually are. */
.res-table tr.loss td.num { color: #ff9c9c; }
.res-table tr.gain td.num { color: #5fe3a1; }
.res-table tr.total td { border-top: 1px solid var(--bp-line); font-weight: 700; }

/* The budget and jitter tables carry three columns; keep them from
   crowding on a narrow results column. */
#budgetTable td, #budgetTable th,
#jitterTable td, #jitterTable th { padding-left: 0.35rem; padding-right: 0.35rem; }

@media (max-width: 720px) {
  .seg button { padding: 0.3rem 0.42rem; font-size: 0.68rem; }
  #budgetTable, #jitterTable { font-size: 0.72rem; }
}