/* Pattern Atlas (/upsc-patterns) — rules used only by the pattern compilation
   and its recall drill. Tokens, navigation, notebook entries, stems, traps and
   the rail all come from utility-chrome.css. */

/* ---------- Atlas rows ---------- */
.atlas-count {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--gray);
  font-variant-numeric: tabular-nums;
}

.atlas-row__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
}

.atlas-row__head h3 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

/* Recall state. Four values, each mapped to a token already in the palette so
   the page never grows a fifth hue. */
.atlas-pill {
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 3px;
  border: 1px solid var(--rule-strong);
  color: var(--gray);
  white-space: nowrap;
}

.atlas-pill[data-state="weak"] {
  border-color: var(--mark-edge);
  background: var(--mark);
  color: var(--text);
}

.atlas-pill[data-state="held"] {
  border-color: color-mix(in srgb, var(--blue) 45%, transparent);
  color: var(--blue);
}

.atlas-pill[data-state="secure"] {
  border-color: color-mix(in srgb, var(--green) 45%, transparent);
  color: var(--green);
}

.atlas-recurrence {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--gray);
}

.atlas-verbs {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--gray);
  font-style: italic;
}

/* ---------- Pattern detail ---------- */
.atlas-detail {
  display: grid;
  gap: 22px;
  margin-top: 6px;
}

@media (min-width: 900px) {
  .atlas-detail {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px 34px;
  }

  .atlas-detail__wide {
    grid-column: 1 / -1;
  }
}

.atlas-group > .an-label {
  display: block;
  margin-bottom: 8px;
}

.atlas-group .an-tests,
.atlas-group .an-list {
  margin-top: 0;
}

.atlas-prelims {
  font-size: 15.5px;
  line-height: 1.5;
}

.atlas-linked {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.atlas-linkbtn {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--input-line);
  border-radius: var(--radius-xs);
  background: none;
  color: var(--blue);
  font-family: var(--sans);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}

.atlas-linkbtn:hover {
  border-color: var(--blue);
}

.atlas-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.atlas-actions a {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--blue);
  text-decoration: none;
  padding: 4px 0;
}

.atlas-actions a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Live trigger layer ---------- */
.atlas-live {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid var(--card-line);
  border-radius: var(--radius-sm);
  background: var(--paper);
}

.atlas-live__head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
  justify-content: space-between;
}

.atlas-live__stamp {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--gray);
  font-variant-numeric: tabular-nums;
}

.atlas-live__intro {
  margin-top: 6px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--gray);
  line-height: 1.5;
}

.atlas-triggers {
  list-style: none;
  margin-top: 12px;
  display: grid;
  gap: 14px;
}

.atlas-trigger {
  padding-left: 14px;
  border-left: 1px solid var(--rule-strong);
}

.atlas-trigger h5 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
}

.atlas-trigger p {
  margin-top: 3px;
  font-size: 15px;
  line-height: 1.5;
}

.atlas-trigger__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-top: 6px;
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--gray);
}

.atlas-trigger__meta a {
  color: var(--blue);
  text-decoration: none;
}

.atlas-trigger__meta a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Drill ---------- */
.atlas-setup {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
  align-items: flex-end;
  padding: 18px 20px;
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: var(--paper);
}

.atlas-setup .an-field {
  flex: 1 1 160px;
  max-width: 220px;
}

.atlas-setup__go {
  flex: 0 0 auto;
}

.atlas-drill__kicker {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}

.atlas-drill__prompt {
  margin-top: 12px;
  font-size: 27px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.atlas-drill__prompt--stem {
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.015em;
}

.atlas-drill__ask {
  margin-top: 14px;
  max-width: 58ch;
  color: var(--gray);
  font-size: 15.5px;
  line-height: 1.6;
}

.atlas-drill__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 10px;
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--gray);
}

.atlas-drill__reveal {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  display: grid;
  gap: 18px;
}

.atlas-drill__reveal[hidden] {
  display: none;
}

.atlas-progress {
  height: 2px;
  margin-top: 18px;
  background: var(--rule);
  overflow: hidden;
}

.atlas-progress span {
  display: block;
  height: 100%;
  background: var(--text);
  transition: width var(--normal) var(--ease-out);
}

.atlas-summary__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.atlas-summary__grid div {
  border-top: 1px solid var(--rule-strong);
  padding-top: 10px;
}

.atlas-summary__grid strong {
  display: block;
  font-size: 26px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.atlas-summary__grid span {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--gray);
}

.atlas-weaklist {
  list-style: none;
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.atlas-weaklist button {
  border: 0;
  background: none;
  padding: 0;
  color: var(--blue);
  font-family: inherit;
  font-size: 16px;
  text-align: left;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Methodology ---------- */
.atlas-method {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

@media (min-width: 820px) {
  .atlas-method {
    grid-template-columns: 1fr 1fr;
    gap: 20px 34px;
  }
}

.atlas-method div {
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.atlas-method h3 {
  font-size: 15px;
}

.atlas-method p {
  margin-top: 5px;
  font-size: 14.5px;
  color: var(--gray);
  line-height: 1.6;
}

.atlas-formula {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-xs);
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 719px) {
  .atlas-drill__prompt {
    font-size: 22px;
  }

  .atlas-setup .an-field {
    max-width: none;
  }
}