.tool-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3.5rem, 7vw, 6.25rem) 0 clamp(2.5rem, 5vw, 4.5rem);
  border-bottom: 1px solid var(--cmg-border);
  background:
    radial-gradient(circle at 86% 18%, rgba(122, 78, 15, 0.12), transparent 24rem),
    radial-gradient(circle at 18% 92%, rgba(40, 100, 220, 0.12), transparent 27rem),
    linear-gradient(145deg, #fbfdff 0%, #edf3fb 100%);
}

.tool-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.55fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.tool-hero h1 {
  max-width: 18ch;
  margin: 0.7rem 0 1rem;
  font-size: clamp(2.45rem, 5.6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.tool-hero__grid > div > p:not(.eyebrow) {
  max-width: 49rem;
  color: var(--cmg-text-secondary);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
}

.tool-hero__actions,
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.4rem;
}

.tool-evidence {
  padding: 1.4rem;
  border: 1px solid var(--cmg-border-strong);
  border-radius: var(--cmg-radius-lg);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--cmg-shadow-md);
}

.tool-evidence h2 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
}

.tool-evidence dl {
  display: grid;
  gap: 0;
  margin: 1rem 0 0;
}

.tool-evidence dl > div {
  display: grid;
  grid-template-columns: minmax(7rem, 0.75fr) minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--cmg-border);
}

.tool-evidence dt {
  color: var(--cmg-text-muted);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tool-evidence dd {
  margin: 0;
  color: var(--cmg-text);
  font-weight: 680;
  overflow-wrap: anywhere;
}

.tool-intro p { color: var(--cmg-text-secondary); }

.tool-console {
  position: sticky;
  top: 5.25rem;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto minmax(20rem, auto);
  gap: 1.25rem;
  align-items: center;
  margin-bottom: 1.25rem;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--cmg-border-strong);
  border-radius: var(--cmg-radius-lg);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--cmg-shadow-md);
  backdrop-filter: blur(12px);
}

.tool-console h2 { margin: 0.15rem 0 0; font-size: 1.2rem; }
.tool-console .tool-actions { justify-content: flex-end; margin: 0; }

.tool-totals {
  display: flex;
  gap: 0.65rem;
  margin: 0;
}

.tool-totals > div {
  min-width: 5.3rem;
  padding: 0.65rem 0.8rem;
  border-radius: var(--cmg-radius-sm);
  background: var(--cmg-primary-soft);
  text-align: center;
}

.tool-totals dt {
  color: var(--cmg-text-secondary);
  font-size: 0.65rem;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tool-totals dd {
  margin: 0.1rem 0 0;
  color: var(--cmg-primary);
  font-size: 1.2rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.tool-status {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--cmg-border);
  color: var(--cmg-text-secondary);
  font-size: 0.85rem;
}

.tool-copy-output {
  display: block;
  grid-column: 1 / -1;
  max-height: 8rem;
  padding: 0.75rem;
  overflow: auto;
  border: 1px solid var(--cmg-border);
  border-radius: var(--cmg-radius-sm);
  background: #f7f9fc;
  color: var(--cmg-text-secondary);
  font: 0.78rem/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.tool-copy-output[hidden] { display: none; }

.tool-presets {
  display: grid;
  grid-template-columns: minmax(15rem, 0.5fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.25rem;
  padding: 1.25rem;
  border: 1px solid var(--cmg-border);
  border-radius: var(--cmg-radius-lg);
  background: var(--cmg-surface);
}

.tool-presets h2 { margin: 0.25rem 0 0.4rem; font-size: 1.35rem; }
.tool-presets p { margin: 0; color: var(--cmg-text-secondary); }

.tool-presets__actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.tool-presets__actions button {
  min-height: 100%;
  padding: 0.9rem;
  border: 1px solid var(--cmg-border);
  border-radius: var(--cmg-radius);
  background: var(--cmg-background-raised);
  color: var(--cmg-text);
  text-align: left;
  cursor: pointer;
}

.tool-presets__actions button:hover,
.tool-presets__actions button:focus-visible {
  border-color: #9bb6e9;
  background: var(--cmg-primary-soft);
}

.tool-presets__actions strong,
.tool-presets__actions small { display: block; }
.tool-presets__actions small { margin-top: 0.35rem; color: var(--cmg-text-secondary); line-height: 1.4; }

.mastery-tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  align-items: start;
}

.mastery-tool-tree {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--cmg-border-strong);
  border-radius: var(--cmg-radius-lg);
  background: var(--cmg-surface);
  box-shadow: var(--cmg-shadow-sm);
}

.mastery-tool-tree__heading {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--cmg-border);
  background: linear-gradient(135deg, #f8faff, #eef3fa);
}

.mastery-tool-tree__heading h2 { margin: 0.15rem 0 0; font-size: 1.25rem; }
.mastery-tool-tree__heading > p { margin: 0; color: var(--cmg-primary); font-weight: 800; white-space: nowrap; }

.mastery-tool-row {
  padding: 0.75rem;
  border-bottom: 1px solid var(--cmg-border);
}

.mastery-tool-row:last-child { border-bottom: 0; }

.mastery-tool-row__gate {
  margin: 0 0 0.5rem;
  color: var(--cmg-text-muted);
  font-size: 0.65rem;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mastery-tool-row__nodes { display: grid; gap: 0.5rem; }

.mastery-tool-node {
  position: relative;
  min-width: 0;
  padding: 0.5rem;
  border: 1px solid var(--cmg-border);
  border-radius: var(--cmg-radius);
  background: #fff;
  transition: border-color 150ms ease, box-shadow 150ms ease, opacity 150ms ease;
}

.mastery-tool-node.is-active {
  border-color: #91ace0;
  box-shadow: inset 3px 0 0 var(--cmg-primary);
}

.mastery-tool-node.is-maxed {
  border-color: #c8a153;
  box-shadow: inset 3px 0 0 var(--cmg-classic-gold);
}

.mastery-tool-node.is-locked { background: var(--cmg-background-raised); }

.mastery-tool-node.is-locked .mastery-tool-node__icon {
  opacity: 0.62;
  filter: saturate(0.72);
}

.mastery-tool-node__add {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  gap: 0.6rem;
  align-items: center;
  width: calc(100% - 1.9rem);
  min-height: 2.75rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--cmg-text);
  text-align: left;
  cursor: pointer;
}

.mastery-tool-node__add:disabled { cursor: not-allowed; }

.mastery-tool-node__icon {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--cmg-border-strong);
  border-radius: 0.45rem;
  object-fit: cover;
}

.mastery-tool-node__copy { min-width: 0; }
.mastery-tool-node__copy strong,
.mastery-tool-node__copy small { display: block; overflow: hidden; text-overflow: ellipsis; }
.mastery-tool-node__copy strong { font-size: 0.82rem; white-space: nowrap; }
.mastery-tool-node__copy small { margin-top: 0.1rem; color: var(--cmg-text-muted); font-size: 0.66rem; white-space: nowrap; }

.mastery-tool-node__rank {
  min-width: 2.3rem;
  padding: 0.28rem 0.4rem;
  border-radius: 999px;
  background: var(--cmg-surface-muted);
  color: var(--cmg-text-secondary);
  font-size: 0.68rem;
  font-weight: 800;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.is-active .mastery-tool-node__rank { background: var(--cmg-primary-soft); color: var(--cmg-primary); }
.is-maxed .mastery-tool-node__rank { background: var(--cmg-classic-gold-soft); color: var(--cmg-classic-gold); }

.mastery-tool-node__remove {
  position: absolute;
  top: 0.9rem;
  right: 0.45rem;
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border: 1px solid var(--cmg-border);
  border-radius: 999px;
  background: #fff;
  color: var(--cmg-text-secondary);
  cursor: pointer;
}

.mastery-tool-node__remove:disabled { opacity: 0.4; cursor: not-allowed; }

.mastery-tool-node__effect,
.mastery-tool-node__requirement {
  margin: 0.45rem 0 0;
  color: var(--cmg-text-secondary);
  font-size: 0.7rem;
  line-height: 1.45;
}

.mastery-tool-node__requirement {
  padding-top: 0.4rem;
  border-top: 1px dashed var(--cmg-border);
  color: var(--cmg-text-muted);
}

.mastery-tool-node__requirement a { color: var(--cmg-primary); }

.planner-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(20rem, 0.45fr);
  gap: 1.25rem;
  align-items: start;
}

.planner-form,
.planner-preview {
  min-width: 0;
  border: 1px solid var(--cmg-border-strong);
  border-radius: var(--cmg-radius-lg);
  background: var(--cmg-surface);
  box-shadow: var(--cmg-shadow-sm);
}

.planner-form { padding: clamp(1.1rem, 2.5vw, 1.75rem); }

.planner-form fieldset {
  min-width: 0;
  margin: 1rem 0 0;
  padding: 1rem;
  border: 1px solid var(--cmg-border);
  border-radius: var(--cmg-radius);
  background: var(--cmg-background-raised);
}

.planner-form legend {
  padding: 0 0.45rem;
  color: var(--cmg-text);
  font-size: 0.85rem;
  font-weight: 800;
}

.planner-fieldset-note { margin: 0 0 0.8rem; color: var(--cmg-text-secondary); font-size: 0.78rem; }

.planner-fields { display: grid; gap: 0.75rem; }
.planner-fields--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.planner-fields--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.planner-fields--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.planner-fields + .planner-fields { margin-top: 0.75rem; }

.planner-field { display: grid; min-width: 0; gap: 0.35rem; }
.planner-field--wide { grid-column: 1 / -1; }
.planner-field > span { color: var(--cmg-text-secondary); font-size: 0.72rem; font-weight: 720; }

.planner-field select,
.planner-field input,
.planner-field textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--cmg-border-strong);
  border-radius: var(--cmg-radius-sm);
  background: #fff;
  color: var(--cmg-text);
  font: inherit;
}

.planner-field textarea { min-height: 6.5rem; resize: vertical; }

.planner-field select:focus-visible,
.planner-field input:focus-visible,
.planner-field textarea:focus-visible {
  outline: 3px solid rgba(40, 100, 220, 0.2);
  outline-offset: 1px;
  border-color: var(--cmg-primary);
}

.planner-actions { padding-top: 0.25rem; }
.planner-form > .tool-status { margin-top: 1rem; }

.planner-preview {
  position: sticky;
  top: 5.25rem;
  overflow: hidden;
}

.planner-preview__label {
  margin: 0;
  padding: 0.75rem 1rem;
  background: #10203a;
  color: #d8e6fa;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.planner-preview__champion {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 0.85rem;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--cmg-border);
}

.planner-preview__champion img {
  width: 4rem;
  height: 4rem;
  border: 1px solid var(--cmg-border-strong);
  border-radius: var(--cmg-radius);
  object-fit: cover;
}

.planner-preview__champion h2 { margin: 0; font-size: 1.2rem; }
.planner-preview__champion p { margin: 0.3rem 0 0; color: var(--cmg-text-secondary); font-size: 0.75rem; }

.planner-preview__groups { display: grid; }

.planner-preview__groups section {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--cmg-border);
}

.planner-preview__groups h3 {
  margin: 0 0 0.25rem;
  color: var(--cmg-text-muted);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.planner-preview__groups p { margin: 0; color: var(--cmg-text); font-size: 0.82rem; line-height: 1.5; overflow-wrap: anywhere; }
.planner-preview > .tool-copy-output { margin: 1rem; }

@media (max-width: 70rem) {
  .tool-console { position: static; grid-template-columns: 1fr auto; }
  .tool-console .tool-actions { grid-column: 1 / -1; justify-content: flex-start; }
  .mastery-tool-grid { grid-template-columns: 1fr; }
  .mastery-tool-rows { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mastery-tool-row:nth-child(odd) { border-right: 1px solid var(--cmg-border); }
  .planner-fields--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 58rem) {
  .tool-hero__grid,
  .planner-layout,
  .tool-presets { grid-template-columns: 1fr; }
  .tool-evidence { max-width: 36rem; }
  .planner-preview { position: static; }
  .tool-presets__actions { grid-template-columns: repeat(3, minmax(11rem, 1fr)); overflow-x: auto; padding-bottom: 0.25rem; }
}

@media (max-width: 42rem) {
  .tool-hero { padding-top: 2.7rem; }
  .tool-hero h1 { font-size: clamp(2.1rem, 11vw, 3.15rem); }
  .tool-hero__actions .button,
  .tool-actions .button { flex: 1 1 10rem; }
  .tool-evidence dl > div { grid-template-columns: 1fr; gap: 0.15rem; }
  .tool-console { grid-template-columns: 1fr; padding: 1rem; }
  .tool-totals { width: 100%; }
  .tool-totals > div { flex: 1; }
  .mastery-tool-rows { grid-template-columns: 1fr; }
  .mastery-tool-row:nth-child(odd) { border-right: 0; }
  .mastery-tool-node__effect { font-size: 0.74rem; }
  .planner-form { padding: 0.85rem; }
  .planner-form fieldset { padding: 0.85rem; }
  .planner-fields--two,
  .planner-fields--three,
  .planner-fields--four { grid-template-columns: 1fr; }
  .planner-field select,
  .planner-field input { min-height: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  .mastery-tool-node { transition: none; }
}