/* ── ecosystem.css ───────────────────────────────────────────
   Layered architecture diagram for /ecosystem.html.
   Scoped under .eco-* classes; inherits color vars from style.css.
─────────────────────────────────────────────────────────────── */

/* Hero band */
.eco-hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 24px;
  text-align: center;
}
.eco-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  margin: 0 0 8px;
}
.eco-tagline {
  color: rgba(240, 246, 252, 0.7);
  font-size: 16px;
  margin: 0 0 28px;
}

/* Filter pills */
.eco-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 16px;
}
.eco-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border2);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  font-family: inherit;
}
.eco-pill:hover { transform: translateY(-1px); border-color: var(--accent); }
.eco-pill.active {
  color: #0d1117;
  background: var(--pill-color, var(--accent));
  border-color: var(--pill-color, var(--accent));
  font-weight: 600;
}

/* Diagram frame (relative wrapper that holds both the canvas and the absolute SVG) */
.eco-frame {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}
.eco-svg {
  position: absolute;
  inset: 24px;
  width: calc(100% - 48px);
  height: calc(100% - 48px);
  pointer-events: none;
  z-index: 0;
}
.eco-canvas {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* Layer card */
.eco-layer {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
}
.eco-layer-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 14px;
}
.eco-layer-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Node tile */
.eco-node {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border2);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s, opacity 0.2s;
  cursor: pointer;
}
.eco-node:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(255, 166, 87, 0.15);
}
.eco-node-icon { font-size: 18px; line-height: 1; }
.eco-node-label { white-space: nowrap; }

/* Candidate nodes (dashed border, lower opacity, badge) */
.eco-node.is-candidate {
  border-style: dashed;
  opacity: 0.6;
}
.eco-node.is-candidate::after {
  content: "Candidate";
  position: absolute;
  bottom: -7px;
  right: 8px;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text);
  background: var(--bg);
  padding: 1px 5px;
  border: 1px solid var(--border2);
  border-radius: 3px;
  opacity: 0.7;
}

/* Path-filter active state */
.eco-canvas.has-active-path .eco-node { opacity: 0.3; }
.eco-canvas.has-active-path .eco-node.is-on-path {
  opacity: 1;
  border-color: var(--path-color);
  box-shadow: 0 0 0 2px var(--path-color), 0 4px 16px color-mix(in oklab, var(--path-color) 30%, transparent);
}
.eco-canvas.has-active-path .eco-node.is-on-path.is-candidate { opacity: 1; }

/* Tooltip */
.eco-tooltip {
  position: absolute;
  background: #0d1117;
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--text);
  max-width: 280px;
  pointer-events: none;
  z-index: 100;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}
.eco-tooltip::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 16px;
  border: 6px solid transparent;
  border-bottom-color: var(--border2);
}

/* Responsive */
@media (max-width: 1100px) {
  .eco-layer-nodes { gap: 10px; }
  .eco-node { padding: 8px 12px; font-size: 13px; }
}
@media (max-width: 600px) {
  .eco-frame { padding: 16px; }
  .eco-svg { display: none; }
  .eco-canvas { gap: 16px; }
  .eco-layer { padding: 16px; }
  .eco-layer-nodes { flex-direction: column; }
  .eco-node { width: 100%; justify-content: flex-start; }
}