/* The Prompt Formula: builds on explainer.css */

/* Six parts in one row: 5 ingredients joined by "+", then an arrow into "Check & refine" */
.formula-flow {
  grid-template-columns: repeat(5, minmax(0, 1fr) 30px) minmax(0, 1fr);
  grid-template-rows: auto;
}
.formula-flow > * {
  grid-area: auto;
}
.formula-flow .flow-node {
  min-height: 200px;
  padding: 16px 14px;
}
.formula-flow .node-label {
  font-size: 21px;
}
.formula-flow .flow-arrow svg.plus {
  width: 20px;
  stroke-width: 2.5;
}
.formula-flow .node-after {
  border-style: dashed;
  background: transparent;
}
.formula-flow .node-after[aria-current="step"] {
  background: var(--ink);
}
[data-color="gold"] .node-icon {
  background: var(--gold);
}
.explain-panel[data-color="gold"] .panel-term {
  background: var(--gold);
}

/* Each part's colour, used on the example line and in the assembled prompt */
[data-part="role"] {
  --part: var(--lime);
}
[data-part="task"] {
  --part: var(--lav);
}
[data-part="context"] {
  --part: var(--blue);
}
[data-part="format"] {
  --part: var(--peach);
}
[data-part="tone"] {
  --part: var(--gold);
}
[data-part="refine"],
[data-part="ask"] {
  --part: var(--sand);
}
.panel-example {
  padding: 14px 16px;
  background: var(--part);
  border: 1.5px solid var(--ink);
  font-size: 17px !important;
}

/* Put it all together */
.assembled {
  margin-top: 32px;
  padding: clamp(22px, 3.5vw, 40px);
  border: 1.5px solid var(--ink);
  background: var(--surface);
}
.assembled-tabs {
  display: inline-flex;
  border: 1.5px solid var(--ink);
  margin-bottom: 24px;
}
.assembled-tabs button {
  padding: 10px 16px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 600 15px var(--sans);
  cursor: pointer;
}
.assembled-tabs button + button {
  border-left: 1.5px solid var(--ink);
}
.assembled-tabs button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}
.assembled-prompt {
  margin: 0;
  font: 400 clamp(19px, 2vw, 23px) / 1.75 var(--sans);
  max-width: 860px;
}
.assembled .seg,
.pb-output .seg {
  padding: 3px 4px;
  background: var(--part);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transition:
    opacity 0.2s,
    box-shadow 0.2s;
}
/* While a part is selected above, it stays bright and the rest step back */
.assembled[data-focus] .seg {
  opacity: 0.4;
}
.assembled[data-focus="role"] .seg[data-part="role"],
.assembled[data-focus="task"] .seg[data-part="task"],
.assembled[data-focus="context"] .seg[data-part="context"],
.assembled[data-focus="format"] .seg[data-part="format"],
.assembled[data-focus="tone"] .seg[data-part="tone"] {
  opacity: 1;
  box-shadow: 0 0 0 2px var(--ink);
}
.assembled[data-focus="refine"] .seg {
  opacity: 1;
}
.assembled[data-focus="refine"] .assembled-followup {
  box-shadow: 0 0 0 2px var(--ink);
}
.assembled-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font: 500 12px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.assembled-legend li::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 6px;
  vertical-align: -1px;
  border: 1.5px solid var(--ink);
  background: var(--part);
}
.assembled-followup {
  margin: 20px 0;
  padding: 12px 14px;
  background: var(--part);
  font-size: 17px;
}
.assembled-note {
  margin: 14px 0 0;
  font-size: 17px;
  opacity: 0.8;
}

/* Prompt builder */
.pb {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: 32px;
}
.pb-form {
  display: grid;
  gap: 14px;
}
.pb-field {
  padding: 16px 18px 18px;
  border: 1.5px solid var(--ink);
  border-left: 8px solid var(--part);
  background: var(--surface);
}
.pb-field label {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 600 18px var(--serif);
  letter-spacing: -0.01em;
}
.pb-num {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: var(--part);
  font: 600 13px var(--mono);
}
.pb-optional {
  font: 500 11px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.6;
}
.pb-hint {
  margin: 4px 0 10px;
  font-size: 14px;
  opacity: 0.75;
}
.pb-field input,
.pb-field textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px var(--sans);
}
.pb-field textarea {
  resize: vertical;
}
.pb-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.pb-chips button {
  padding: 5px 11px;
  border: 1px solid var(--ink);
  border-radius: 99px;
  background: var(--paper);
  color: var(--ink);
  font: 500 13px var(--sans);
  cursor: pointer;
}
.pb-chips button:hover,
.pb-chips button:focus-visible {
  background: var(--part);
}
.pb-check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
}
.pb-check input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--ink);
}
.pb-preview {
  position: sticky;
  top: 20px;
  padding: clamp(20px, 3vw, 32px);
  border: 1.5px solid var(--ink);
  background: var(--surface);
  box-shadow: 6px 6px 0 var(--ink);
}
.pb-preview-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.pb-preview-head p {
  margin: 0;
}
.pb-meter {
  font: 500 11px var(--mono);
  letter-spacing: 0.1em;
}
.pb-bars {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin: 12px 0 18px;
}
.pb-bars span {
  height: 8px;
  border: 1px solid var(--ink);
  background: var(--line-soft);
  transition: background 0.2s;
}
.pb-bars span.on {
  background: var(--part);
}
.pb-output {
  min-height: 150px;
  margin: 0;
  font: 400 18px/1.8 var(--sans);
}
.pb-empty {
  font-style: italic;
  opacity: 0.6;
}
.pb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 14px;
}
.pb-actions .button:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
  box-shadow: none;
}
.pb-tip {
  margin: 0;
  font-size: 15px;
  opacity: 0.8;
}

@media (max-width: 900px) {
  .pb {
    grid-template-columns: 1fr;
  }
  .pb-preview {
    position: static;
  }
}
@media (max-width: 1000px) {
  .formula-flow {
    grid-template-columns: 1fr;
  }
  .formula-flow .flow-node {
    min-height: 0;
  }
  .formula-flow .flow-arrow svg.plus {
    transform: none;
  }
}