/* Instrumentation plan figures — loaded article-locally after resources.css.
   Element+class selectors keep these ahead of the .article-content p / ul / li rules. */

.instr-chain,
.instr-model,
.instr-contract {
  margin: 38px 0;
  padding: 36px 38px 34px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-bg-muted);
}

/* Figure 1 — the evidence chain */

.instr-chain__rail {
  height: 3px;
  margin-bottom: 22px;
  border-radius: 2px;
  background: linear-gradient(90deg, #39b56a 0%, #6fc7d8 45%, #071b3a 100%);
}

.instr-chain__steps {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 20px;
}

p.instr-chain__num {
  margin: 0 0 8px;
  color: #3c6ea8;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
}

p.instr-chain__num--start { color: #17693f; }
p.instr-chain__num--end { color: var(--color-text); }

p.instr-chain__title {
  margin: 0 0 8px;
  color: var(--color-text);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.25;
}

p.instr-chain__text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.5;
  text-wrap: pretty;
}

.instr-chain__text code {
  padding: 2px 6px;
  border-radius: 4px;
  background: #e8eef7;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px;
}

.instr-chain__note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-top: 30px;
  padding: 20px 24px;
  border: 1px solid #dfe7f2;
  border-radius: 12px;
  background: #fff;
}

p.instr-chain__note-title {
  margin: 0;
  color: var(--color-text);
  font-size: 17px;
  font-weight: 600;
}

p.instr-chain__note-text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.5;
  text-wrap: pretty;
}

/* Figure 2 — the B2B entity model */

.instr-model__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.15fr;
  align-items: start;
  gap: 24px;
}

.instr-model__col {
  padding: 22px 24px 24px;
  border: 1px solid #dfe7f2;
  border-radius: 12px;
  background: #fff;
}

p.instr-model__coltitle {
  margin: 0 0 16px;
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.instr-model__entity {
  padding: 14px 16px;
  border: 1px solid #cfdcec;
  border-radius: 10px;
  background: var(--color-bg-muted);
}

.instr-model__entity--nested {
  margin-top: 12px;
  background: #fff;
  padding: 12px 14px;
  border-radius: 8px;
}

.instr-model__entity--deep {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px dashed #c6d2e2;
  background: transparent;
}

p.instr-model__entity-name {
  margin: 0 0 4px;
  color: var(--color-text);
  font-size: 17px;
  font-weight: 600;
}

.instr-model__entity--nested > p.instr-model__entity-name { font-size: 16px; }
.instr-model__entity--deep > p.instr-model__entity-name { font-size: 15px; margin-bottom: 4px; }

p.instr-model__entity-note {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.45;
}

p.instr-model__colnote {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.5;
  text-wrap: pretty;
}

.instr-model__layers {
  display: grid;
  gap: 8px;
}

.instr-model__layer {
  padding: 12px 14px;
  border-left: 3px solid #cfd9e7;
  border-radius: 0 8px 8px 0;
  background: var(--color-bg-muted);
}

.instr-model__layer--area { border-left-color: var(--color-accent-green); }
.instr-model__layer--group { border-left-color: #5a9fe0; }
.instr-model__layer--norm { border-left-color: #9fb3cc; }

p.instr-model__layer-name {
  margin: 0;
  color: var(--color-text);
  font-size: 16px;
  font-weight: 600;
}

p.instr-model__layer-value {
  margin: 3px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

p.instr-model__layer-value--code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px;
  overflow-wrap: anywhere;
}

.instr-model__visit {
  padding: 14px 16px;
  border: 1px solid #cfdcec;
  border-radius: 10px;
  background: var(--color-bg-muted);
}

.instr-model__visit-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.instr-model__visit-head p.instr-model__entity-name { margin: 0; }

.instr-model__events {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.instr-model__event {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid #dfe7f2;
  border-radius: 8px;
  background: #fff;
  color: var(--color-text-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px;
}

.instr-model__event i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #9fb3cc;
}

.instr-model__event--confirmed {
  border-color: #b6dfc6;
  background: #f0faf4;
  color: #17693f;
  font-weight: 600;
}

.instr-model__event--confirmed i { background: var(--color-accent-green); }

.instr-model__event b {
  margin-left: auto;
  color: #17693f;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
}

.instr-model__context {
  margin-top: 24px;
  padding: 22px 26px 24px;
  border-radius: 12px;
  background: var(--color-primary);
}

.instr-model__context-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
}

p.instr-model__context-title {
  margin: 0;
  color: #fff;
  font-size: 18px;
  font-weight: 600;
}

p.instr-model__context-warn {
  margin: 0;
  color: #f2b3a5;
  font-size: 15px;
  font-weight: 600;
}

ul.instr-model__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.instr-model__chips li {
  padding: 7px 12px;
  border-radius: 7px;
  background: #16304f;
  color: #cfe0f5;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px;
  line-height: 1.4;
}

/* Figure 3 — the tracking-plan contract */

.instr-contract__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding-bottom: 22px;
  border-bottom: 1.5px solid #d3ddec;
}

.instr-contract__event {
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 18px;
  font-weight: 600;
}

.instr-contract__question {
  color: var(--color-text);
  font-size: 18px;
}

.instr-contract__version {
  margin-left: auto;
  padding: 7px 13px;
  border: 1px solid #dbe4f0;
  border-radius: 999px;
  background: #fff;
  color: var(--color-text-muted);
  font-size: 14px;
}

.instr-contract__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px 34px;
  padding-top: 26px;
}

p.instr-contract__label {
  margin: 0 0 6px;
  color: #17693f;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

p.instr-contract__label--blue { color: #3c6ea8; margin-bottom: 10px; }
p.instr-contract__label--deny { color: #97402f; margin-bottom: 10px; }

p.instr-contract__text {
  margin: 0 0 6px;
  color: #243650;
  font-size: 17px;
  line-height: 1.5;
  text-wrap: pretty;
}

p.instr-contract__text:last-child { margin-bottom: 0; }

ul.instr-contract__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.instr-contract__chips li {
  padding: 6px 11px;
  border: 1px solid #cfdcec;
  border-radius: 7px;
  background: #fff;
  color: #243650;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px;
  line-height: 1.4;
}

.instr-contract__chips--deny li {
  border-color: #f0cfc7;
  background: #fdf0ed;
  color: #97402f;
}

.instr-contract__proof {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 26px;
  padding: 20px 24px;
  border: 1px solid #dfe7f2;
  border-radius: 12px;
  background: #fff;
}

p.instr-contract__proof-label {
  margin: 0;
  color: var(--color-text);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.instr-contract__check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #243650;
  font-size: 16px;
}

.instr-contract__check::before {
  content: "✓";
  color: #17693f;
  font-weight: 700;
}

@media (max-width: 1180px) {
  .instr-chain__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px 20px;
  }

  .instr-model__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .instr-model__col:last-child {
    grid-column: 1 / -1;
  }

  .instr-contract__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .instr-chain,
  .instr-model,
  .instr-contract {
    padding: 24px 20px;
  }

  .instr-chain__steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .instr-model__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .instr-model__event {
    min-width: 0;
    flex-wrap: wrap;
    overflow-wrap: anywhere;
  }

  .instr-model__event b {
    margin-left: 18px;
  }

  .instr-model__col:last-child {
    grid-column: auto;
  }

  .instr-contract__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .instr-contract__version {
    margin-left: 0;
  }
}