/* ================================================================
   CWS — Environmental monitoring trend chart
   Paste into the CSS pane of the cws-trend module.
   Everything is scoped under .cws-trend so it cannot leak into the
   theme, and the theme cannot reach into it.
   ================================================================ */

.cws-trend {
  --cws-trend-good: #0e5a48;
  --cws-trend-bad: #b3342e;
  --cws-trend-ink: #0f1f1a;
  --cws-trend-body: #26332e;
  --cws-trend-muted: #5a6b65;
  --cws-trend-hairline: #d7e0dc;
  --cws-trend-mist: #f1f5f3;
  --cws-trend-font: 'Montserrat', system-ui, -apple-system, sans-serif;

  font-family: var(--cws-trend-font);
  color: var(--cws-trend-body);
  box-sizing: border-box;

  /* the chart responds to ITS OWN width, not the viewport, so it works
     in a narrow column just as well as full-bleed */
  container-type: inline-size;
}
.cws-trend *,
.cws-trend *::before,
.cws-trend *::after { box-sizing: border-box; }

/* ---------- card ---------- */
.cws-trend__card {
  margin: 0;
  background: #fff;
  border: 1px solid var(--cws-trend-hairline);
  border-radius: 14px;
  padding: 24px 24px 21px;
  box-shadow: 0 24px 48px -40px rgba(15, 31, 26, .5);
}

/* ---------- head ---------- */
.cws-trend__head {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
}
.cws-trend__title {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cws-trend-muted);
}
.cws-trend__legend { display: flex; flex-wrap: wrap; gap: 16px; }
.cws-trend__key {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--cws-trend-muted);
}
.cws-trend__key i {
  width: 16px;
  height: 0;
  border-top-width: 2px;
  border-top-style: solid;
  display: block;
  flex: none;
}
.cws-trend__key--bad i { border-color: var(--cws-trend-bad); }
.cws-trend__key--good i { border-color: var(--cws-trend-good); }

/* ---------- svg ---------- */
.cws-trend__svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}
.cws-trend__svg text { font-family: var(--cws-trend-font); }

.cws-trend__trace {
  fill: none;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.cws-trend__trace--good { stroke: var(--cws-trend-good); }
.cws-trend__trace--bad { stroke: var(--cws-trend-bad); }

.cws-trend__dot { fill: #fff; stroke-width: 2; }
.cws-trend__dot--good { stroke: var(--cws-trend-good); }
.cws-trend__dot--bad { stroke: var(--cws-trend-bad); }

/* ---------- foot ---------- */
.cws-trend__foot {
  margin-top: 19px;
  padding-top: 17px;
  border-top: 1px solid var(--cws-trend-hairline);
}
.cws-trend__foot-label {
  display: block;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cws-trend-bad);
  margin-bottom: 11px;
}
.cws-trend__consequences {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.cws-trend__consequences li {
  font-size: .8rem;
  color: var(--cws-trend-ink);
  background: var(--cws-trend-mist);
  border: 1px solid var(--cws-trend-hairline);
  border-radius: 999px;
  padding: 6px 13px;
  white-space: nowrap;
}
.cws-trend__caption {
  margin: 14px 0 0;
  font-size: .72rem;
  line-height: 1.5;
  color: #8b9a94;
  max-width: 52ch;
}

/* ================================================================
   Animation — progressive enhancement only.
   Without JS, .is-armed is never added, so everything below stays
   in its natural visible state.
   ================================================================ */
.cws-trend--anim.is-armed .cws-trend__trace {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.9s cubic-bezier(.4, 0, .2, 1);
}
.cws-trend--anim.is-armed .cws-trend__trace--good { transition-delay: .15s; }
.cws-trend--anim.is-armed .cws-trend__trace--bad { transition-delay: .5s; }
.cws-trend--anim.is-in .cws-trend__trace { stroke-dashoffset: 0; }

.cws-trend--anim.is-armed .cws-trend__dot {
  opacity: 0;
  transition: opacity .35s ease;
}
.cws-trend--anim.is-in .cws-trend__dot { opacity: 1; }

.cws-trend--anim.is-armed .cws-trend__breach {
  opacity: 0;
  transform: scale(.4);
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity .45s ease, transform .45s cubic-bezier(.34, 1.4, .64, 1);
}
.cws-trend--anim.is-in .cws-trend__breach { opacity: 1; transform: scale(1); }
.cws-trend--anim.is-in .cws-trend__pulse {
  animation: cwsTrendPulse 2.6s ease-out 2.7s infinite;
}
@keyframes cwsTrendPulse {
  0%   { r: 6;  opacity: .55; }
  70%  { r: 17; opacity: 0; }
  100% { r: 17; opacity: 0; }
}

.cws-trend--anim.is-armed .cws-trend__consequences li {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .45s ease, transform .45s ease;
}
.cws-trend--anim.is-in .cws-trend__consequences li {
  opacity: 1;
  transform: none;
}

/* ---------- responsive (container-based) ---------- */
@container (max-width: 560px) {
  .cws-trend__card { padding: 18px 16px 16px; }
  .cws-trend__limit-label { font-size: 15px; }
  .cws-trend__ax-label { font-size: 14px; }
  .cws-trend__trace { stroke-width: 3.2; }
  .cws-trend__dot { r: 4; stroke-width: 2.4; }
  .cws-trend__head { gap: 8px 14px; }
}

/* fallback for browsers without container query support */
@supports not (container-type: inline-size) {
  @media (max-width: 560px) {
    .cws-trend__card { padding: 18px 16px 16px; }
    .cws-trend__limit-label { font-size: 15px; }
    .cws-trend__ax-label { font-size: 14px; }
    .cws-trend__trace { stroke-width: 3.2; }
    .cws-trend__dot { r: 4; stroke-width: 2.4; }
  }
}

/* ---------- accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  .cws-trend--anim.is-armed .cws-trend__trace,
  .cws-trend--anim.is-armed .cws-trend__dot,
  .cws-trend--anim.is-armed .cws-trend__breach,
  .cws-trend--anim.is-armed .cws-trend__consequences li {
    stroke-dashoffset: 0;
    opacity: 1;
    transform: none;
    transition: none;
  }
  .cws-trend--anim.is-in .cws-trend__pulse { animation: none; }
}