/* =========================================================================
   Severity Board — grouped-lane visualization (replaces the D3 force graph)
   All per-card and per-lane motion is transform/opacity only, driven either
   by CSS transitions/keyframes (gated globally via the prefers-reduced-motion
   block in css/main.css) or by the FLIP regroup logic in js/board.js (which
   is itself gated via js/motion.js's prefersReducedMotion()).
   ========================================================================= */

.graph-canvas {
  position: absolute;
  inset: 0;
}

/* ===== Board toolbar (group-by toggle) ===== */

.board-toolbar {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 10;
}
.board-toolbar[hidden] { display: none; }

.group-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px;
  background: rgba(13, 15, 22, 0.72);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}
.group-toggle-label {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-faint);
  padding-left: 10px;
}
.group-toggle-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  transition: background 180ms var(--ease-out), color 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}
.group-toggle-btn:hover { color: var(--text); }
.group-toggle-btn.active {
  background: var(--accent-2);
  color: #fff;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.4);
}

/* ===== Board / lanes ===== */

.board {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 68px 20px 20px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
}

.board-lane {
  --lane-w: 300px;
  flex: 0 0 var(--lane-w);
  max-width: var(--lane-w);
  height: 100%;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, rgba(255,255,255,0.015), transparent 120px), var(--bg-1);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition:
    opacity 250ms var(--ease-out),
    max-width 250ms var(--ease-out) 250ms,
    margin-right 250ms var(--ease-out) 250ms,
    padding 250ms var(--ease-out) 250ms,
    border-color 250ms var(--ease-out) 250ms;
}
.board-lane.lane-empty {
  opacity: 0;
  max-width: 0;
  min-width: 0;
  margin-right: -18px;
  border-color: transparent;
  pointer-events: none;
}

@keyframes laneEnter {
  from { opacity: 0; transform: translateX(-18px); }
  to   { opacity: 1; transform: translateX(0); }
}
.board-lane.entrance {
  animation: laneEnter 520ms var(--ease-out) both;
}

.lane-header {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-2);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 2;
}
/* Faint colored wash behind each lane title, keyed off the accent dot. */
.lane-accent {
  position: relative;
}
.lane-accent::before {
  content: '';
  position: absolute;
  left: -14px;
  top: -22px;
  width: 120px;
  height: 44px;
  background: radial-gradient(ellipse at left center, currentColor, transparent 70%);
  opacity: 0.08;
  pointer-events: none;
}
.lane-accent {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px currentColor;
}
.lane-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lane-count-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-dim);
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 9px;
  min-width: 22px;
  text-align: center;
}

.lane-cards {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ===== Loophole cards ===== */

.loophole-card {
  position: relative;
  display: flex;
  background: var(--bg-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  cursor: pointer;
  overflow: hidden;
  transition:
    transform 180ms var(--ease-out),
    box-shadow 180ms var(--ease-out),
    border-color 180ms var(--ease-out),
    opacity 220ms var(--ease-out);
}
.loophole-card.is-flipping {
  transition: transform 450ms var(--ease-out);
}
.loophole-card.is-hidden { display: none; }
.loophole-card.is-leaving {
  transform: scale(0.9);
  opacity: 0;
  pointer-events: none;
}
.loophole-card.is-entering {
  transform: scale(0.9);
  opacity: 0;
}

.loophole-card:hover,
.loophole-card:focus-visible {
  transform: translateY(-3px);
  box-shadow:
    0 10px 26px rgba(0,0,0,0.4),
    0 0 18px color-mix(in srgb, var(--spine-color, var(--accent-2)) 12%, transparent);
  border-color: color-mix(in srgb, var(--spine-color, var(--accent-2)) 35%, var(--border));
  outline: none;
}
.loophole-card:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

.loophole-card.is-selected {
  border-color: var(--spine-color, var(--accent-2));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--spine-color, var(--accent-2)) 45%, transparent);
}

@keyframes cardEnter {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
.loophole-card.entrance {
  animation: cardEnter 480ms var(--ease-out) both;
}

@keyframes cardPulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--spine-color, var(--accent-2)) 70%, transparent); }
  70%  { box-shadow: 0 0 0 10px color-mix(in srgb, var(--spine-color, var(--accent-2)) 0%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--spine-color, var(--accent-2)) 0%, transparent); }
}
.loophole-card.pulse {
  animation: cardPulse 900ms var(--ease-out);
}

.card-spine {
  width: 4px;
  flex-shrink: 0;
  background: var(--spine-color, var(--accent-2));
  position: relative;
  opacity: 0.75;
  transition: opacity 180ms var(--ease-out);
}
.card-spine::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--spine-color, var(--accent-2));
  filter: blur(6px);
  opacity: 0;
  transition: opacity 180ms var(--ease-out);
}
.loophole-card:hover .card-spine,
.loophole-card:focus-visible .card-spine,
.loophole-card.is-selected .card-spine {
  opacity: 1;
}
.loophole-card:hover .card-spine::after,
.loophole-card:focus-visible .card-spine::after,
.loophole-card.is-selected .card-spine::after {
  opacity: 0.6;
}

.card-body {
  flex: 1;
  min-width: 0;
  padding: 11px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.card-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  align-self: flex-start;
  background: color-mix(in srgb, var(--type-color, #64748b) 16%, var(--bg-3));
  color: var(--type-color, #cbd5e1);
  border-radius: 999px;
  padding: 2px 9px 2px 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.card-type-glyph {
  font-family: var(--font-mono);
  font-size: 9.5px;
  background: var(--type-color, #64748b);
  color: #05060a;
  border-radius: 4px;
  padding: 1px 4px;
}

.card-title {
  margin: 2px 0 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 13.5px;
  line-height: 1.35;
  color: var(--text);
}

.card-section {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-faint);
}

.card-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 3px;
}
.card-metric {
  min-width: 0;
  border: 1px solid color-mix(in srgb, var(--metric-color, var(--border)) 42%, var(--border-soft));
  background: color-mix(in srgb, var(--metric-color, #64748b) 10%, var(--bg-3));
  border-radius: 6px;
  padding: 5px 7px;
}
.card-metric-label,
.card-metric-value {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.card-metric-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 2px;
}
.card-metric-value {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--metric-color, var(--text-dim));
}

.card-desc {
  margin: 2px 0 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Responsive ===== */

@media (max-width: 900px) {
  .board {
    flex-direction: column;
    align-items: stretch;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 60px 12px 20px;
  }
  .board-lane {
    flex: 0 0 auto;
    width: 100%;
    max-width: none;
    height: auto;
    max-height: 60vh;
  }
  .board-lane.lane-empty {
    max-height: 0;
    margin-right: 0;
    margin-bottom: 0;
  }
  .board-lane:not(.lane-empty) { margin-bottom: 4px; }
}

@media (max-width: 560px) {
  .group-toggle-label { display: none; }
  .board-toolbar { top: 12px; left: 12px; }
}