/* ==========================================================================
   K01 K04-K06 · Foundations  (kit/foundations.html)
   Principles, layout & density, iconography & imagery, motion catalog.
   ========================================================================== */

/* Kit page scaffolding ---------------------------------------------------- */

/* This page pads each section instead of <main> */
.kit-title {
  margin-bottom: 48px;
}

.kit-heading {
  max-width: 20ch;
  margin-bottom: 48px;
  line-height: 1.04;
}

.kit-heading--lead {
  margin-bottom: 20px;
}

.kit-lead {
  margin-bottom: 40px;
}

/* Mono sub-heading, e.g. "SPACING · 4-PT SCALE" */

/* Two-up columns that stack on narrow screens */
.kit-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 16px;
}

.kit-cols--wide {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 48px;
  margin-bottom: 56px;
}

.kit-cols--snug {
  gap: 32px;
  align-items: start;
}

/* Compact spec tables */
/* K01 · Principles --------------------------------------------------------- */

.principles {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
}

.principle {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 28px;
}

.principle__meta {
  display: flex;
  justify-content: space-between;
  font: 11px var(--w-mono);
  color: var(--w-text-3);
}

.principle__title {
  font: 400 21px/1.25 var(--w-sans);
}

.principle__body {
  font: 15px/1.55 var(--w-sans);
  color: var(--w-text-2);
}

/* K04 · Grid previews ------------------------------------------------------ */

.grid-demos {
  display: grid;
  gap: 12px;
  margin-bottom: 56px;
}

.grid-demo {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  align-items: center;
}

.grid-demo__label {
  font: 12px/1.4 var(--w-mono);
  color: var(--w-text-2);
}

.grid-demo__label span {
  color: var(--w-text-3);
}

/* --w width · --cols columns · --gap gutter · --m side margin */
.grid-demo__bar {
  display: grid;
  grid-template-columns: repeat(var(--cols), 1fr);
  gap: var(--gap);
  max-width: calc(var(--w) + 2 * var(--m));
  height: 48px;
  padding: 0 var(--m);
  background: rgba(139, 125, 255, .05);
}

.grid-demo__bar span {
  background: rgba(139, 125, 255, .22);
}

/* K04 · Spacing & geometry ------------------------------------------------- */

.space-scale {
  display: grid;
  gap: 6px;
}

.space-scale__row {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 12px;
  align-items: center;
  font: 12px var(--w-mono);
  color: var(--w-text-2);
}

.space-scale__bar {
  width: var(--w);
  height: 10px;
  background: var(--w-action);
}

.radii {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.radius-swatch {
  display: grid;
  gap: 8px;
}

.radius-swatch__box {
  height: 74px;
  border: 1px solid rgba(230, 234, 237, .3);
  border-radius: var(--r);
  background: var(--w-surface-1);
}

.radius-swatch__label {
  font: 11px/1.4 var(--w-mono);
  color: var(--w-text-2);
}

.radius-swatch__label span {
  color: var(--w-text-3);
}

.radii__note {
  margin-top: 20px;
  font: 13px/1.6 var(--w-sans);
  color: var(--w-text-2);
}

/* K04 · Console panel anatomy --------------------------------------------- */

.console-panel {
  border: 1px solid var(--w-line-2);
  border-radius: 4px;
  background: var(--w-surface-1);
}

.console-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  height: 41px;
  padding: 0 14px;
  border-bottom: 1px solid var(--w-line);
  font: 12px var(--w-mono);
  color: var(--w-text-2);
}

.console-panel__status {
  display: flex;
  align-items: center;
  gap: 6px;
}

.console-panel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--w-ok);
}

.console-panel__body {
  padding: 16px;
  font: 14px/1.6 var(--w-sans);
  color: var(--w-text-2);
}

.console-panel__foot {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  border-top: 1px solid var(--w-line);
  font: 11px var(--w-mono);
  color: var(--w-text-3);
}

.anatomy-list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 20px;
  font: 14px/1.5 var(--w-sans);
  color: var(--w-text-2);
}

/* K04 · Density table ------------------------------------------------------ */

.kit-table--density {
  min-width: 560px;
}

.kit-table--density td {
  font-family: var(--w-mono);
}

.kit-table--density td:first-child {
  font-size: 12px;
}

/* K05 · Icon slots --------------------------------------------------------- */

.icon-grid {
  grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  margin-bottom: 56px;
}

.icon-slot {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 18px 8px;
  font: 11px var(--w-mono);
  color: var(--w-text-2);
  text-align: center;
}

/* 24 px slot (dashed) with the 2 px keyline shape inside */
.icon-slot__frame {
  position: relative;
  width: 24px;
  height: 24px;
  border: 1px dashed rgba(139, 125, 255, .45);
}

.icon-slot__frame::after {
  content: "";
  position: absolute;
  inset: 2px;
  border: 1px solid rgba(230, 234, 237, .18);
}

.icon-slot--round .icon-slot__frame::after { border-radius: 50%; }
.icon-slot--soft .icon-slot__frame::after  { border-radius: 2px; }

/* K05 · Photo direction ---------------------------------------------------- */

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.photo__frame {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 4px;
  background: repeating-linear-gradient(135deg, #141a20 0 10px, #10151a 10px 20px);
}

/* Ultraviolet duotone wash */
.photo__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(139, 125, 255, .24), transparent 65%);
}

.photo__brief {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 10px;
  font: 11px/1.4 var(--w-mono);
  color: var(--w-text-2);
}

.photo__caption {
  margin-top: 8px;
  font: 13px var(--w-sans);
  color: var(--w-text-2);
}

/* K05 · Do / don't --------------------------------------------------------- */

.rule-card {
  padding: 20px;
  border: 1px solid;
  border-radius: 4px;
}

.rule-card--do {
  border-color: rgba(76, 195, 138, .4);
}

.rule-card--dont {
  border-color: rgba(255, 116, 121, .45);
}

.rule-card__label {
  margin-bottom: 8px;
  font: 12px var(--w-mono);
}

.rule-card--do .rule-card__label   { color: var(--w-ok); }
.rule-card--dont .rule-card__label { color: var(--w-sev-critical); }

.rule-card__text {
  font: 14px/1.6 var(--w-sans);
  color: var(--w-text-2);
}

/* K06 · Durations & curves ------------------------------------------------- */

.kit-cols--motion {
  gap: 32px;
  margin-bottom: 48px;
}

.kit-table--durations {
  font: 13px var(--w-mono);
}

.kit-table--durations th,
.kit-table--durations td,
.kit-table--durations thead th {
  padding: 10px 14px;
}

.kit-table--durations td:last-child {
  font-family: var(--w-sans);
  color: var(--w-text-2);
}

.curve-card {
  padding: 16px;
  border: 1px solid var(--w-line-2);
  border-radius: 4px;
}

.curve-card__name {
  margin-bottom: 6px;
  font: 500 14px var(--w-mono);
}

.curve-card__spec {
  font: 12px var(--w-mono);
  color: var(--w-text-2);
}

.curve-card__text {
  font: 13px/1.6 var(--w-sans);
  color: var(--w-text-2);
}

/* K06 · Live catalog ------------------------------------------------------- */

.catalog {
  --ease-steady: cubic-bezier(.45, 0, .55, 1);
  --ease-resolve: var(--w-ease-out);
}

.catalog__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.catalog__title {
  margin: 0;
}

.catalog__replay {
  height: 40px;
  padding: 0 16px;
}

.catalog__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 16px;
}

.demo {
  border: 1px solid var(--w-line-2);
  border-radius: 4px;
  background: var(--w-surface-1);
}

.demo__head {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--w-line);
  font: 12px var(--w-mono);
  color: var(--w-text);
}

.demo__toggle {
  padding: 0;
  border: 0;
  background: none;
  color: var(--w-text-2);
  font: 12px var(--w-mono);
}

.demo__text {
  margin: 20px;
  font: 14px/1.6 var(--w-sans);
  color: var(--w-text-2);
}

.demo__note {
  margin: 0 20px 20px;
  font: 12px var(--w-mono);
  color: var(--w-text-3);
}

.demo__link {
  display: inline-block;
  margin: 0 20px 20px;
  font: 500 14px var(--w-sans);
}

/* Verify, then trust: scan line sweeps, card resolves, tick appears */
.verify {
  position: relative;
  margin: 20px;
  padding: 18px;
  overflow: hidden;
  border: 1px solid var(--w-line-2);
  border-radius: 4px;
  opacity: .2;
  transition: opacity 280ms var(--ease-resolve);
}

.verify__scan {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--w-action);
  transition: transform 280ms var(--ease-steady), opacity 180ms 200ms;
}

.verify__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font: 12px var(--w-mono);
  color: var(--w-action);
}

.verify__tick {
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--w-action);
  border-radius: 50%;
  font: 600 9px var(--w-sans);
  opacity: 0;
  transition: opacity 180ms 260ms;
}

.verify__text {
  font: 15px var(--w-sans);
}

.is-played .verify         { opacity: 1; }
.is-played .verify__scan   { transform: translateY(120px); opacity: 0; }
.is-played .verify__tick   { opacity: 1; }

/* Log stream */
.log {
  height: 192px;
  padding: 12px 14px;
  overflow: hidden;
  font: 11px/1.9 var(--w-mono);
}

.log__line {
  overflow: hidden;
  color: var(--w-text-2);
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* Everything except the signal fades once the signal is found */
.log__line.is-muted {
  color: #5B646D;
}

.log__line.is-signal {
  background: var(--w-action);
  color: var(--w-on-action);
}

/* Redaction reveal: bar lifts from left to right */
.redact-demo {
  margin: 20px;
  font: 300 24px/1.3 var(--w-sans);
}

.redact {
  position: relative;
  display: inline-block;
}

.redact__bar {
  position: absolute;
  inset: 6% -2px;
  background: var(--w-redact);
  transform-origin: right;
  transition: transform 700ms var(--ease-resolve);
}

.is-played .redact__bar {
  transform: scaleX(0);
}

/* SOC funnel counters */
.counters {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 20px;
  border: 1px solid var(--w-line);
  background: var(--w-line);
}

.counters__cell {
  padding: 14px;
  background: var(--w-canvas);
}

.counters__key {
  margin-bottom: 6px;
  font: 11px var(--w-mono);
  color: var(--w-text-3);
}

.counters__value {
  font: 400 20px var(--w-mono);
}

/* Attack path: links draw in, the last node turns into the stop */
.chain {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 28px 20px;
  font: 11px var(--w-mono);
}

.chain__node {
  padding: 6px 8px;
  border: 1px solid rgba(230, 234, 237, .25);
  border-radius: 2px;
  color: var(--w-text);
  transition: opacity 420ms, border-color 280ms;
}

.chain__link {
  flex: 1;
  min-width: 8px;
  height: 1px;
  background: rgba(230, 234, 237, .3);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 420ms var(--ease-steady);
}

.chain__link--end {
  background: transparent;
}

.chain__node--stop {
  opacity: .4;
}

.chain__mark {
  display: none;
}

.is-played .chain__link        { transform: scaleX(1); }
.is-played .chain__link--break { background: var(--w-action); }

.is-played .chain__node--stop {
  border-style: dashed;
  border-color: var(--w-action);
  color: var(--w-action);
  opacity: 1;
}

.is-played .chain__mark {
  display: inline;
}