/* Sentinel — NEPRA Jan-2023 case study. Extends assets/css/style.css tokens. */

:root {
  --avm-fail: oklch(0.63 0.2 25);
  --avm-warn: oklch(0.78 0.16 78);
  --avm-hold: oklch(0.75 0.15 158);
  --avm-idle: oklch(0.62 0.05 258);
}

/* ---------- Case hero ---------- */
.case-hero {
  position: relative;
  overflow: hidden;
  padding-top: 9rem;
  padding-bottom: 4.5rem;
  background:
    radial-gradient(60% 80% at 22% 40%, oklch(0.42 0.19 258 / 45%), transparent 64%),
    linear-gradient(180deg, oklch(0.13 0.04 262), oklch(0.11 0.032 262));
}
.case-hero h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  margin: 0.75rem 0 0;
}
.case-hero .case-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 1.25rem;
}
.case-hero .case-lead {
  max-width: 46rem;
  margin-top: 1.5rem;
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 3rem;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
}
.case-stats div {
  background: var(--panel);
  padding: 1.25rem 1.25rem 1.4rem;
}
.case-stats dt {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.case-stats dd {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 300;
}
@media (min-width: 900px) { .case-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* ---------- Map shell ---------- */
.avm-shell {
  margin-top: 2.5rem;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(180deg, oklch(0.15 0.036 262), oklch(0.12 0.03 262));
  overflow: hidden;
}
.avm-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.avm-bar .spacer { flex: 1 1 auto; }
.avm-bar .live-tag { color: var(--gold); }

.avm-ctl {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  background: oklch(1 0 0 / 5%);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.42rem 0.9rem;
  cursor: pointer;
  transition: all 0.18s ease;
}
.avm-ctl:hover { color: var(--foreground); border-color: var(--hairline); }
.avm-ctl.is-on {
  color: var(--primary-foreground);
  background: var(--primary);
  border-color: transparent;
}
.avm-ctl.is-primary { color: var(--foreground); border-color: var(--hairline); }

.avm-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 1024px) {
  .avm-grid { grid-template-columns: minmax(0, 1fr) 20rem; }
  .avm-side { border-left: 1px solid var(--hairline); border-top: 0 !important; }
}

.avm-canvas {
  position: relative;
  padding: 0.5rem;
  overflow-x: auto;
}
.avm-canvas svg {
  display: block;
  width: 100%;
  min-width: 760px;
  height: auto;
}

/* ---------- Graph elements ---------- */
.avm-edge {
  stroke: oklch(0.55 0.06 258 / 55%);
  stroke-width: 1;
  transition: stroke 0.3s ease, stroke-opacity 0.3s ease;
}
.avm-edge.kind-hvdc { stroke-width: 2.2; stroke: oklch(0.62 0.12 250 / 70%); }
.avm-edge.kind-protection { stroke-dasharray: 3 5; }
.avm-edge.kind-signal { stroke-dasharray: 6 4; }
.avm-edge.kind-contract,
.avm-edge.kind-water,
.avm-edge.kind-season,
.avm-edge.kind-recovery,
.avm-edge.kind-logic,
.avm-edge.kind-order {
  stroke-dasharray: 2 6;
  stroke: oklch(0.72 0.17 250 / 45%);
}
.avm-edge.is-live { stroke: var(--gold); stroke-opacity: 0.9; }
.avm-edge.is-dead { stroke: var(--avm-fail); stroke-opacity: 0.55; }

.avm-pulse {
  fill: var(--gold);
  filter: drop-shadow(0 0 6px oklch(0.72 0.17 250 / 90%));
}

.avm-node { cursor: pointer; outline: none; }
.avm-node .avm-halo { fill: transparent; stroke: none; }
.avm-node .avm-ring {
  fill: oklch(0.14 0.03 262 / 90%);
  stroke: var(--avm-idle);
  stroke-width: 1.2;
  transition: stroke 0.25s ease, fill 0.25s ease;
}
.avm-node .avm-core {
  fill: var(--avm-idle);
  transition: fill 0.25s ease, r 0.25s ease;
}
.avm-node .avm-label {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--muted-foreground);
  pointer-events: none;
  transition: fill 0.25s ease;
}
.avm-node:hover .avm-ring,
.avm-node:focus-visible .avm-ring { stroke: var(--gold); }
.avm-node:hover .avm-label,
.avm-node:focus-visible .avm-label { fill: var(--foreground); }

.avm-node[data-state="degraded"] .avm-ring { stroke: var(--avm-warn); stroke-dasharray: 3 3; }
.avm-node[data-state="degraded"] .avm-core { fill: var(--avm-warn); }

.avm-node[data-state="stressed"] .avm-ring { stroke: var(--avm-warn); }
.avm-node[data-state="stressed"] .avm-core { fill: var(--avm-warn); r: 8px; }

.avm-node[data-state="tripped"] .avm-ring { stroke: var(--avm-fail); fill: oklch(0.63 0.2 25 / 14%); }
.avm-node[data-state="tripped"] .avm-core { fill: var(--avm-fail); }
.avm-node[data-state="tripped"] .avm-label { fill: oklch(0.78 0.11 25); }

.avm-node[data-state="held"] .avm-ring { stroke: var(--avm-hold); fill: oklch(0.75 0.15 158 / 12%); }
.avm-node[data-state="held"] .avm-core { fill: var(--avm-hold); }
.avm-node[data-state="held"] .avm-label { fill: var(--avm-hold); }

.avm-node.is-shocked .avm-halo {
  stroke: var(--gold);
  stroke-width: 2;
  animation: avm-ripple 0.9s ease-out 2;
}
@keyframes avm-ripple {
  0%   { r: 15; stroke-opacity: 0.9; }
  100% { r: 42; stroke-opacity: 0; }
}

/* ---------- Side rail ---------- */
.avm-side {
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
}
.avm-readout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.avm-readout div { background: oklch(0.14 0.033 262); padding: 0.85rem 1rem; }
.avm-readout span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.avm-readout strong {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.35rem;
}

.avm-detail { padding: 1.1rem 1.1rem 0.6rem; border-bottom: 1px solid var(--hairline); min-height: 8.5rem; }
.avm-detail-band {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}
.avm-detail-title { margin: 0.4rem 0 0; font-family: var(--font-display); font-size: 1.05rem; font-weight: 400; }
.avm-detail-body { margin: 0.5rem 0 0.6rem; font-size: 0.85rem; line-height: 1.6; color: var(--muted-foreground); }

.avm-log-head {
  padding: 0.8rem 1.1rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.avm-log {
  flex: 1 1 auto;
  max-height: 15rem;
  overflow-y: auto;
  padding: 0 1.1rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.5;
}
.avm-log-line { display: flex; gap: 0.6rem; padding: 0.28rem 0; color: var(--muted-foreground); }
.avm-log-t { color: oklch(0.55 0.04 258); flex: 0 0 auto; }
.avm-log-line.tone-fail { color: oklch(0.78 0.12 25); }
.avm-log-line.tone-hold { color: var(--avm-hold); }
.avm-log-line.tone-warn { color: var(--avm-warn); }
.avm-log-line.tone-shock { color: var(--gold); }
.avm-log-line.tone-note { color: var(--muted-foreground); }

/* ---------- Legend + notes ---------- */
.avm-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 0.9rem 1.1rem;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.avm-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 999px; margin-right: 0.45rem; vertical-align: -1px; }
.avm-legend .k-idle { background: var(--avm-idle); }
.avm-legend .k-degraded { background: var(--avm-warn); }
.avm-legend .k-tripped { background: var(--avm-fail); }
.avm-legend .k-held { background: var(--avm-hold); }

.avm-note {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: oklch(0.6 0.03 258);
}

/* ---------- Stage table ---------- */
.stage-list { margin-top: 2rem; display: grid; gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: var(--radius); overflow: hidden; }
.stage-row { background: var(--panel); padding: 1.1rem 1.25rem; display: grid; gap: 0.35rem; }
.stage-row .stage-t { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.stage-row h3 { margin: 0; font-family: var(--font-display); font-size: 1.05rem; font-weight: 400; }
.stage-row p { margin: 0; font-size: 0.9rem; line-height: 1.6; color: var(--muted-foreground); }
@media (min-width: 820px) {
  .stage-row { grid-template-columns: 9rem 14rem minmax(0, 1fr); align-items: baseline; gap: 1.25rem; }
}

.finding-grid { margin-top: 2rem; display: grid; gap: 1.25rem; }
@media (min-width: 820px) { .finding-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.finding-card { border: 1px solid var(--hairline); border-radius: var(--radius); background: var(--panel); padding: 1.4rem; }
.finding-card p:first-child { margin: 0; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); }
.finding-card h3 { margin: 0.6rem 0 0; font-family: var(--font-display); font-weight: 400; font-size: 1.1rem; }
.finding-card p:last-child { margin: 0.6rem 0 0; font-size: 0.9rem; line-height: 1.6; color: var(--muted-foreground); }