/* =====================================================
   Contingency screening demo
   Page-scoped: only /research/ loads this file. The page
   shell it sits in (.section-research, .project) lives
   in custom.css with the other section styles.
   Colour meaning lives in js/contingency.js, which sets
   fills and strokes from the solved case; the rules here
   are layout, weight and the states colour cannot carry
   on its own.
===================================================== */

.cx-lead{
  margin:10px 0 0;
  color:var(--ink-muted);
}

.cx{
  margin-top:26px;
}

.cx__status{
  margin:0;
  color:var(--ink-muted);
}

/* ---------- controls ---------- */

.cx-controls{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:16px 28px;
  padding:14px 18px;
  background:var(--card);
  border:1px solid var(--ring);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
}

.cx-control{
  display:flex;
  align-items:center;
  gap:12px;
  flex:1 1 320px;
  min-width:0;
}

.cx-control__label{
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--ink-muted);
  white-space:nowrap;
}

.cx-slider{
  flex:1 1 auto;
  min-width:120px;
  accent-color:var(--accent);
}

.cx-control__value{
  min-width:4ch;
  font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}

.cx-reset{
  padding:9px 16px;
  font:inherit;
  font-size:13px;
  font-weight:600;
  color:var(--accent);
  background:transparent;
  border:1px solid var(--ring);
  border-radius:999px;
  cursor:pointer;
  transition:border-color .18s ease, color .18s ease;
}

.cx-reset:hover:not(:disabled),
.cx-reset:focus-visible{
  border-color:var(--accent);
}

.cx-reset:disabled{
  color:var(--ink-muted);
  cursor:default;
  opacity:.55;
}

/* ---------- board ---------- */

.cx-board{
  display:grid;
  grid-template-columns:minmax(0, 1.55fr) minmax(0, 1fr);
  gap:20px;
  margin-top:18px;
}

.cx-diagramwrap,
.cx-summary,
.cx-screen{
  padding:18px 20px;
  background:var(--card);
  border:1px solid var(--ring);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
}

.cx-screen{
  margin-top:20px;
}

.cx-diagram{
  display:block;
  width:100%;
  height:auto;
  overflow:visible;
}

/* ---------- diagram marks ---------- */

.cx-branch{
  cursor:pointer;
}

.cx-branch__hit{
  stroke:transparent;
  stroke-width:20;
  stroke-linecap:round;
}

.cx-branch__line{
  stroke-linecap:round;
  transition:stroke .18s ease, stroke-width .18s ease;
}

/* Out of service is dashed as well as pale: a tripped line has to be obvious
   without relying on the colour difference alone. */
.cx-branch.is-out .cx-branch__line{
  stroke-dasharray:7 8;
}

.cx-branch.is-hovered .cx-branch__line{
  stroke-width:8;
}

.cx-branch:focus{
  outline:none;
}

.cx-branch:focus-visible .cx-branch__hit{
  stroke:var(--accent);
  stroke-width:3;
  stroke-dasharray:4 4;
}

.cx-branch__tx circle{
  fill:var(--card);
  stroke:#5b6b7b;
  stroke-width:1.6;
}

.cx-branch.is-out .cx-branch__tx circle{
  stroke:#c8d2e4;
}

/* An overloaded circuit gets a second, non-colour cue. */
.cx-branch.is-over .cx-branch__line{
  stroke-dasharray:14 5;
}

.cx-bus__disc{
  stroke:rgba(10,33,82,.35);
  stroke-width:1.5;
  transition:fill .18s ease;
}

.cx-bus.is-violating .cx-bus__disc{
  stroke:#d03b3b;
  stroke-width:3.5;
}

.cx-bus__number{
  font-size:14px;
  font-weight:700;
  fill:var(--ink);
  paint-order:stroke;
  stroke:rgba(255,255,255,.75);
  stroke-width:3;
}

.cx-bus__reading{
  font-size:11.5px;
  fill:var(--ink-muted);
  font-variant-numeric:tabular-nums;
  paint-order:stroke;
  stroke:var(--card);
  stroke-width:3;
}

.cx-bus.is-violating .cx-bus__reading{
  fill:#b5302f;
  font-weight:700;
}

.cx-bus__stub{
  stroke:#5b6b7b;
  stroke-width:1.6;
}

.cx-bus__gen{
  fill:var(--card);
  stroke:#5b6b7b;
  stroke-width:1.6;
}

.cx-bus__genmark{
  font-size:12px;
  font-weight:700;
  fill:#5b6b7b;
}

/* ---------- legend ---------- */

.cx-legend{
  display:flex;
  flex-wrap:wrap;
  gap:18px 40px;
  margin-top:14px;
  padding-top:14px;
  border-top:1px solid var(--ring);
}

.cx-legend__group{
  flex:1 1 190px;
  min-width:0;
}

.cx-legend__title{
  margin:0 0 7px;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--ink-muted);
}

.cx-legend__ramp{
  display:flex;
  align-items:center;
  gap:3px;
}

.cx-legend__step{
  flex:1 1 auto;
  border-radius:2px;
}

.cx-legend__step--over{
  flex:0 0 22px;
}

.cx-legend__band{
  display:flex;
  height:9px;
  border-radius:2px;
  overflow:hidden;
}

.cx-legend__band span{
  flex:1 1 auto;
}

.cx-legend__scale{
  display:flex;
  justify-content:space-between;
  margin:5px 0 0;
  font-size:11.5px;
  color:var(--ink-muted);
  font-variant-numeric:tabular-nums;
}

/* ---------- summary ---------- */

.cx-banner{
  padding:12px 14px;
  border-radius:var(--radius-md);
  border-left:4px solid var(--ink-muted);
  background:#f6f8fc;
}

.cx-banner[data-level="good"]{     border-left-color:#0ca30c; }
.cx-banner[data-level="warning"]{  border-left-color:#fab219; }
.cx-banner[data-level="serious"]{  border-left-color:#ec835a; }
.cx-banner[data-level="critical"]{ border-left-color:#d03b3b; }

.cx-banner__title{
  margin:0;
  font-size:15px;
  font-weight:700;
  color:var(--ink);
}

.cx-banner__verdict{
  margin:6px 0 0;
  font-size:13.5px;
  line-height:1.55;
  color:var(--ink-muted);
}

.cx-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  margin:16px 0 0;
}

.cx-stat dt{
  font-size:12px;
  color:var(--ink-muted);
}

.cx-stat dd{
  margin:2px 0 0;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}

.cx-violations{
  margin:16px 0 0;
  padding:0;
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:7px;
}

.cx-violations li{
  display:flex;
  align-items:baseline;
  gap:9px;
  font-size:13px;
  color:var(--ink-muted);
}

.cx-violations__tag{
  flex:0 0 auto;
  padding:2px 8px;
  font-size:11px;
  font-weight:700;
  letter-spacing:.03em;
  text-transform:uppercase;
  color:#b5302f;
  background:#fdeceb;
  border-radius:999px;
}

/* ---------- ranked screen ---------- */

.cx-screen__head h2{
  margin:0;
  font-size:17px;
  color:var(--ink);
}

.cx-screen__note{
  margin:5px 0 0;
  font-size:13px;
  color:var(--ink-muted);
}

.cx-masking{
  margin:14px 0 0;
  padding:12px 14px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--ink);
  background:#fff8e8;
  border-left:4px solid #fab219;
  border-radius:var(--radius-md);
}

.cx-tablewrap{
  overflow-x:auto;
  overscroll-behavior-x:contain;
  margin-top:14px;
}

.cx-table{
  width:100%;
  min-width:520px;
  border-collapse:collapse;
  font-size:13.5px;
}

.cx-table th,
.cx-table td{
  padding:8px 14px 8px 0;
  text-align:left;
  border-bottom:1px solid var(--ring);
  white-space:nowrap;
}

.cx-table thead th{
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--ink-muted);
}

.cx-table .is-numeric{
  text-align:right;
  font-variant-numeric:tabular-nums;
}

.cx-table__row{
  cursor:pointer;
  transition:background-color .14s ease;
}

.cx-table__row:hover{
  background:#f4f7fd;
}

.cx-table__row:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:-2px;
}

.cx-table__row.is-applied{
  background:#eaf1ff;
  font-weight:600;
}

.cx-tag{
  display:inline-block;
  padding:2px 9px;
  font-size:11.5px;
  font-weight:600;
  border-radius:999px;
  background:#eef1f6;
  color:var(--ink-muted);
}

.cx-tag[data-level="good"]{     background:#e8f6e8; color:#0a6f0a; }
.cx-tag[data-level="warning"]{  background:#fff3d6; color:#8a5b00; }
.cx-tag[data-level="serious"]{  background:#fdeee6; color:#a2472a; }
.cx-tag[data-level="critical"]{ background:#fdeceb; color:#b5302f; }

/* ---------- notes ---------- */

.cx-notes{
  margin-top:34px;
}

.cx-notes h2{
  margin:26px 0 8px;
  font-size:17px;
  color:var(--ink);
}

.cx-notes p,
.cx-notes li{
  color:var(--ink-muted);
  line-height:1.65;
}

.cx-notes p{
  margin:0 0 10px;
}

.cx-notes ul{
  margin:0;
  padding-left:20px;
}

.cx-notes li{
  margin-bottom:8px;
}

.cx-notes strong{
  color:var(--ink);
}

@media (max-width:900px){
  .cx-board{
    grid-template-columns:minmax(0, 1fr);
  }
}

/* A one-line diagram squeezed onto a phone gives bus discs too small to read
   or tap, so below this width it keeps a usable size and scrolls - the same
   trade the contribution calendar makes on the home page. */
@media (max-width:760px){
  .cx-diagramscroll{
    overflow-x:auto;
    overscroll-behavior-x:contain;
  }

  .cx-diagram{
    min-width:560px;
  }
}

@media (max-width:720px){
  .cx-diagramwrap,
  .cx-summary,
  .cx-screen{
    padding:16px 14px;
  }

  .cx-controls{
    padding:12px 14px;
  }
}

@media (prefers-reduced-motion: reduce){
  .cx-branch__line,
  .cx-bus__disc,
  .cx-table__row{
    transition:none;
  }
}