/* ============================================================
   FOOD CHAIN VISUALIZATION — Fish Translator
   Canvas-based interactive food web with side panel
   ============================================================ */

.food-chain-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  min-height: calc(100vh - 200px);
}

@media (max-width: 1024px) {
  .food-chain-layout {
    grid-template-columns: 1fr;
  }
}

/* Canvas container */
.canvas-wrap {
  position: relative;
  background: var(--fish-glass);
  border: 1px solid var(--fish-glass-border);
  border-radius: var(--fish-radius-lg);
  overflow: hidden;
  min-height: 500px;
}

.canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

.canvas-wrap canvas:active {
  cursor: grabbing;
}

/* Trophic level labels on canvas */
.trophic-labels {
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
  padding: 30px 0;
}

.trophic-label {
  font-size: var(--fish-text-2xs);
  font-weight: var(--fish-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--fish-tracking-wider);
  padding: 4px 8px;
  border-radius: var(--fish-radius-sm);
  background: rgba(0,0,0,0.5);
}

.trophic-label.apex { color: var(--fish-red-bright); }
.trophic-label.secondary { color: var(--fish-gold-bright); }
.trophic-label.primary { color: var(--fish-green-bright); }

/* Season toggle bar */
.season-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.season-btn {
  flex: 1;
  min-width: 80px;
  padding: 10px 12px;
  background: var(--fish-card);
  border: 1px solid var(--fish-card-border);
  border-radius: var(--fish-radius-md);
  color: var(--fish-text-muted);
  font-size: var(--fish-text-sm);
  font-weight: var(--fish-weight-semibold);
  cursor: pointer;
  text-align: center;
  transition: all var(--fish-duration-normal) var(--fish-ease-default);
}

.season-btn:hover {
  background: var(--fish-card-hover);
  border-color: var(--fish-card-border-hover);
  color: var(--fish-text);
}

.season-btn.active {
  background: var(--fish-accent-ghost);
  border-color: var(--fish-accent-dim);
  color: var(--fish-accent-bright);
  box-shadow: var(--fish-shadow-glow);
}

.season-btn .season-icon {
  display: block;
  font-size: 1.2rem;
  margin-bottom: 2px;
}

/* Side panel */
.side-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-card {
  background: var(--fish-glass);
  border: 1px solid var(--fish-glass-border);
  border-radius: var(--fish-radius-lg);
  padding: 18px;
  backdrop-filter: blur(var(--fish-glass-blur));
}

.info-card h3 {
  font-size: var(--fish-text-md);
  font-weight: var(--fish-weight-bold);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-card .placeholder-msg {
  color: var(--fish-text-dim);
  font-size: var(--fish-text-sm);
  font-style: italic;
}

/* Selected species panel */
.species-name {
  font-size: var(--fish-text-lg);
  font-weight: var(--fish-weight-bold);
  color: var(--fish-accent-bright);
  margin-bottom: 4px;
}

.species-trophic {
  font-size: var(--fish-text-xs);
  text-transform: uppercase;
  letter-spacing: var(--fish-tracking-wider);
  color: var(--fish-text-dim);
  margin-bottom: 12px;
}

.diet-section, .predator-section, .prey-section {
  margin-bottom: 14px;
}

.diet-section h4, .predator-section h4, .prey-section h4 {
  font-size: var(--fish-text-sm);
  font-weight: var(--fish-weight-semibold);
  color: var(--fish-text-muted);
  margin-bottom: 6px;
}

.diet-bar {
  display: flex;
  height: 8px;
  border-radius: var(--fish-radius-full);
  overflow: hidden;
  background: var(--fish-bg-deep);
  margin-bottom: 6px;
}

.diet-segment {
  height: 100%;
  transition: width var(--fish-duration-slow) var(--fish-ease-default);
}

.diet-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: var(--fish-text-xs);
}

.diet-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--fish-text-muted);
}

.diet-legend-item .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.relation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.relation-tag {
  font-size: var(--fish-text-xs);
  padding: 3px 10px;
  border-radius: var(--fish-radius-full);
  background: var(--fish-card);
  border: 1px solid var(--fish-card-border);
  color: var(--fish-text-muted);
  cursor: pointer;
  transition: all var(--fish-duration-fast) var(--fish-ease-default);
}

.relation-tag:hover {
  background: var(--fish-card-hover);
  border-color: var(--fish-card-border-hover);
  color: var(--fish-text);
}

/* Fishing tips card */
.tip-card {
  background: linear-gradient(135deg, rgba(6,182,212,0.08), rgba(6,182,212,0.02));
  border: 1px solid rgba(6,182,212,0.15);
  border-radius: var(--fish-radius-lg);
  padding: 16px;
}

.tip-card h3 {
  font-size: var(--fish-text-base);
  color: var(--fish-accent-bright);
  margin-bottom: 10px;
}

.tip-item {
  font-size: var(--fish-text-sm);
  color: var(--fish-text);
  padding: 8px 0;
  border-bottom: 1px solid var(--fish-divider);
  line-height: 1.5;
}

.tip-item:last-child {
  border-bottom: none;
}

.tip-item strong {
  color: var(--fish-accent);
}

/* Legend */
.legend-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fish-text-xs);
  color: var(--fish-text-muted);
  margin-bottom: 6px;
}

.legend-circle {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid;
  flex-shrink: 0;
}

.legend-circle.apex { border-color: var(--fish-red); background: rgba(239,68,68,0.2); }
.legend-circle.secondary { border-color: var(--fish-gold); background: rgba(245,158,11,0.2); }
.legend-circle.primary { border-color: var(--fish-green); background: rgba(16,185,129,0.2); }

.legend-arrow {
  width: 30px;
  height: 3px;
  background: var(--fish-text-dim);
  position: relative;
  flex-shrink: 0;
}

.legend-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  border: 4px solid transparent;
  border-left-color: var(--fish-text-dim);
}

/* Canvas hover tooltip */
.canvas-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--fish-glass-heavy);
  backdrop-filter: blur(var(--fish-glass-heavy-blur));
  border: 1px solid var(--fish-card-border-hover);
  border-radius: var(--fish-radius-md);
  padding: 8px 12px;
  font-size: var(--fish-text-xs);
  color: var(--fish-text);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--fish-duration-fast) var(--fish-ease-default);
  z-index: var(--fish-z-tooltip);
}

.canvas-tooltip.visible {
  opacity: 1;
}

/* Mobile panel */
@media (max-width: 1024px) {
  .side-panel {
    order: -1;
  }
  .canvas-wrap {
    min-height: 400px;
  }
}

@media (max-width: 480px) {
  .canvas-wrap {
    min-height: 320px;
  }
  .season-bar {
    gap: 4px;
  }
  .season-btn {
    padding: 8px 6px;
    font-size: var(--fish-text-xs);
  }
}