/* ==========================================================================
   K07 Elements — page styles

   The whole <main class="elements"> column is themeable: the theme switch
   sets data-theme="light|dark" on it, and every colour below comes from the
   semantic tokens (tokens.css) or from the --el-* page tokens defined here,
   so both themes follow automatically.
   ========================================================================== */

/* ── Page tokens + themed column ────────────────────────────────────────── */

.elements {
  /* Values the semantic token set does not cover */
  --el-action-active: var(--scrub-800);
  --el-tertiary: var(--graphite-100);
  --el-tertiary-hover: var(--graphite-150);
  --el-disabled-bg: var(--graphite-100);
  --el-disabled-fg: var(--graphite-400);
  --el-danger: var(--status-high-fg);
  --el-danger-hover: #9A1F17;
  --el-danger-fg: var(--graphite-0);
  --el-switch-off: var(--graphite-300);
  --el-focus-ring: 0 0 0 2px var(--color-canvas), 0 0 0 4px var(--color-focus);

  background: var(--color-canvas);
  color: var(--color-text);
  transition: background var(--dur-3), color var(--dur-3);
}

.elements[data-theme="dark"] {
  --el-action-active: #9DF0CF;
  --el-tertiary: #1C262B;
  --el-tertiary-hover: var(--graphite-700);
  --el-disabled-bg: #1C262B;
  --el-disabled-fg: var(--graphite-650);
  --el-danger-hover: #FF9A90;
  --el-danger-fg: var(--graphite-900);
  --el-switch-off: var(--graphite-600);
}

/* Shared text styles, re-coloured from the theme */
.elements .eyebrow { color: var(--color-text-secondary); }
.elements .eyebrow__rule { background: var(--color-text); }
.elements .lead { color: var(--color-text-secondary); }
.elements .kit-section__index,
.elements .mono-label { color: var(--color-text-tertiary); }


/* ── Header: theme switch + on-page navigation ──────────────────────────── */

.elements__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.theme-switch {
  display: flex;
  padding: 3px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
}

.theme-switch__option {
  height: 36px;
  padding: 0 16px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-secondary);
  font: 500 14px/1 'Geist', sans-serif;
  cursor: pointer;
}
.theme-switch__option[aria-checked="true"] {
  background: var(--color-text);
  color: var(--color-canvas);
}

.page-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-toc__link,
.page-toc__link:hover {
  height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font: 400 13px/1 'Geist', sans-serif;
  text-decoration: none;
}

/* ── Shared card + grid ─────────────────────────────────────────────────── */

.card-grid {
  display: grid;
  gap: 20px;
}
.card-grid--240 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.card-grid--300 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.card-grid--320 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }

.el-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-l);
  background: var(--color-surface);
}
.el-card--roomy  { padding: 24px; gap: 18px; }
.el-card--gap-10 { gap: 10px; }
.el-card--gap-12 { gap: 12px; }
.el-card--gap-16 { gap: 16px; }
.el-card--gap-18 { gap: 18px; }
.el-card--start  { align-items: flex-start; }

.el-card__note {
  font: 400 13px/1.45 'Geist', sans-serif;
  color: var(--color-text-secondary);
}
.el-card__note--tight { line-height: 1.4; }

/* Small spinning ring used inside loading buttons; colour = currentColor */
.spinner {
  flex: none;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: lumenSpin 1000ms linear infinite;
}
.spinner--16 { width: 16px; height: 16px; }

/* ── 07.1 Button state matrix ───────────────────────────────────────────── */

.state-matrix {
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-l);
  background: var(--color-surface);
  overflow-x: auto;
}

.state-matrix__table { min-width: 1120px; }

.state-matrix__row {
  display: grid;
  grid-template-columns: 120px repeat(6, minmax(0, 1fr));
  align-items: center;
  border-bottom: 1px solid var(--color-hairline);
}
.state-matrix__row--head { align-items: stretch; }

.state-matrix__state {
  padding: 14px 12px;
  font: 500 11px/1 'Geist Mono', monospace;
  letter-spacing: .08em;
  color: var(--color-text-tertiary);
}

.state-matrix__variant {
  padding: 0 16px;
  font: 500 13px/1.2 'Geist', sans-serif;
}

.state-matrix__cell {
  display: flex;
  align-items: center;
  padding: 16px 12px;
}

/* Button specimen: a variant modifier plus an optional state modifier */
.btn-spec {
  --bg: transparent;
  --fg: var(--color-text);
  --bd: transparent;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  min-width: 0;
  box-sizing: border-box;
  padding: 0 18px;
  border: 1px solid var(--bd);
  border-radius: var(--radius-pill);
  background: var(--bg);
  color: var(--fg);
  font: 500 14px/1 'Geist', sans-serif;
  text-underline-offset: 3px;
  white-space: nowrap;
}

.btn-spec--primary     { --bg: var(--color-action); --fg: var(--color-action-fg); --bd: var(--color-action); }
.btn-spec--secondary   { --bd: var(--color-hairline-strong); }
.btn-spec--tertiary    { --bg: var(--el-tertiary); --bd: var(--el-tertiary); }
.btn-spec--link        { --fg: var(--color-link); padding: 0 2px; text-decoration: underline; }
.btn-spec--icon        { --bd: var(--color-hairline-strong); padding: 0; min-width: 44px; }
.btn-spec--destructive { --bg: var(--el-danger); --fg: var(--el-danger-fg); --bd: var(--el-danger); }

/* Hover */
.btn-spec--primary.btn-spec--hover     { --bg: var(--color-action-hover); --bd: var(--color-action-hover); }
.btn-spec--secondary.btn-spec--hover,
.btn-spec--icon.btn-spec--hover        { --bd: var(--color-text); }
.btn-spec--tertiary.btn-spec--hover    { --bg: var(--el-tertiary-hover); --bd: var(--el-tertiary-hover); }
.btn-spec--ghost.btn-spec--hover       { --bg: var(--el-tertiary); }
.btn-spec--link.btn-spec--hover        { --fg: var(--color-action-hover); }
.btn-spec--destructive.btn-spec--hover { --bg: var(--el-danger-hover); --bd: var(--el-danger-hover); }

/* Focus-visible */
.btn-spec--focus { box-shadow: var(--el-focus-ring); }

/* Active (pressed) */
.btn-spec--active { transform: scale(.98); }
.btn-spec--primary.btn-spec--active     { --bg: var(--el-action-active); --bd: var(--el-action-active); }
.btn-spec--secondary.btn-spec--active,
.btn-spec--icon.btn-spec--active        { --bg: var(--el-tertiary); --bd: var(--color-text); }
.btn-spec--tertiary.btn-spec--active,
.btn-spec--ghost.btn-spec--active       { --bg: var(--el-tertiary-hover); }
.btn-spec--destructive.btn-spec--active { --bg: var(--el-danger-hover); --bd: var(--el-danger-hover); }

/* Disabled: filled variants get the disabled fill, outlined ones a faint line */
.btn-spec--disabled { --fg: var(--el-disabled-fg); }
.btn-spec--primary.btn-spec--disabled,
.btn-spec--tertiary.btn-spec--disabled,
.btn-spec--destructive.btn-spec--disabled { --bg: var(--el-disabled-bg); --bd: var(--el-disabled-bg); }
.btn-spec--secondary.btn-spec--disabled,
.btn-spec--icon.btn-spec--disabled { --bd: var(--color-hairline); }

/* ── 07.1 Size samples, loading demo, anatomy ───────────────────────────── */

.size-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.btn-sample {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: var(--radius-pill);
  background: var(--color-action);
  color: var(--color-action-fg);
}
.btn-sample--s { height: 40px; padding: 0 16px; font: 500 14px/1 'Geist', sans-serif; }
.btn-sample--m { height: 48px; padding: 0 22px; font: 500 16px/1 'Geist', sans-serif; }
.btn-sample--l { height: 56px; padding: 0 28px; font: 500 17px/1 'Geist', sans-serif; }

.loading-demo {
  align-self: flex-start;
  border: 0;
  cursor: pointer;
}

.anatomy {
  position: relative;
  align-self: center;
  margin: 28px 0 34px;
}

.anatomy__padding,
.anatomy__height,
.anatomy__caption {
  position: absolute;
  font: 500 10px/1 'Geist Mono', monospace;
  color: var(--color-text-secondary);
}

.anatomy__padding {
  left: 0;
  top: -18px;
  width: 22px;
  padding-top: 3px;
  border-top: 1px solid var(--color-text-secondary);
  text-align: center;
}

.anatomy__height {
  right: -30px;
  top: 0;
  height: 48px;
  display: flex;
  align-items: center;
  padding-left: 4px;
  border-left: 1px solid var(--color-text-secondary);
}

.anatomy__caption {
  left: 0;
  right: 0;
  bottom: -24px;
  text-align: center;
}

.guidelines {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guideline {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.guideline__badge {
  flex: none;
  height: 22px;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  border-radius: var(--radius-pill);
  font: 500 12px/1 'Geist', sans-serif;
}
.guideline__badge--do   { background: var(--status-success-bg); color: var(--status-success-fg); }
.guideline__badge--dont { background: var(--status-high-bg);    color: var(--status-high-fg); }

.guideline__text { font: 400 14px/1.45 'Geist', sans-serif; }

/* ── 07.2 Input state specimens ─────────────────────────────────────────── */

.input-states {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px 20px;
}

.input-state {
  --label: var(--color-text);
  --value: var(--color-text-tertiary);
  --line: var(--color-hairline-strong);
  --fill: var(--color-surface);
  --ring: none;
  --tone: var(--color-text-tertiary);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.input-state--hover    { --line: var(--color-text-secondary); }
.input-state--focus    { --value: var(--color-text); --line: var(--color-text); --ring: var(--el-focus-ring); }
.input-state--filled   { --value: var(--color-text); }
.input-state--error    { --value: var(--color-text); --line: var(--status-high-fg); --tone: var(--status-high-fg); }
.input-state--success  { --value: var(--color-text); --line: var(--status-success-fg); --tone: var(--status-success-fg); }
.input-state--disabled { --label: var(--el-disabled-fg); --value: var(--el-disabled-fg); --line: var(--color-hairline); --fill: var(--el-disabled-bg); }

.input-state__label {
  font: 500 14px/1.2 'Geist', sans-serif;
  color: var(--label);
}

.input-state__field {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--fill);
  box-shadow: var(--ring);
  font: 400 16px/1 'Geist', sans-serif;
  color: var(--value);
}

.input-state__value {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.input-state__glyph {
  font: 600 12px/1 'Geist Mono', monospace;
  color: var(--tone);
}

.input-state__help {
  min-height: 18px;
  font: 400 13px/1.35 'Geist', sans-serif;
  color: var(--tone);
}

/* ── 07.2 Live form fields ──────────────────────────────────────────────── */

.form-demo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-l);
  background: var(--color-surface);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field__label { font: 500 14px/1.2 'Geist', sans-serif; }
.field__label--tight { line-height: 1; }

.field__hint {
  font-weight: 400;
  color: var(--color-text-tertiary);
}

.field__input {
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-m);
  background: var(--color-surface);
  color: var(--color-text);
  font: 400 16px/1 'Geist', sans-serif;
}

.field__input--email,
.combo__input {
  height: 48px;
  padding: 0 14px;
}
.field__input--email,
.field__input--email:focus-visible,
.combo__input,
.combo__input:focus-visible { outline: 0; }

.field__input--email:focus { box-shadow: 0 0 0 3px rgba(10, 122, 95, .25); }
.field__input--email[aria-invalid="true"] { border-color: var(--status-high-fg); }
.field__input--email.is-valid { border-color: var(--status-success-fg); }

.field__input--textarea {
  padding: 12px 14px;
  line-height: 1.5;
  resize: vertical;
}

.field__help {
  font: 400 13px/1.35 'Geist', sans-serif;
  color: var(--color-text-tertiary);
}
.field__input[aria-invalid="true"] ~ .field__help { color: var(--status-high-fg); }
.field__input.is-valid ~ .field__help { color: var(--status-success-fg); }

.field__count {
  align-self: flex-end;
  font: 400 12px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
  font-variant-numeric: tabular-nums;
}

/* ── 07.3 Select ────────────────────────────────────────────────────────── */

.select {
  position: relative;
  display: block;
}

.select__control {
  width: 100%;
  height: 48px;
  padding: 0 40px 0 14px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-m);
  background: var(--color-surface);
  color: var(--color-text);
  font: 400 16px/1 'Geist', sans-serif;
  -webkit-appearance: none;
  appearance: none;
}

.select__arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font: 500 12px/1 'Geist Mono', monospace;
  color: var(--color-text-secondary);
}

/* ── 07.3 Combobox ──────────────────────────────────────────────────────── */

.combo { position: relative; }

.combo__input[aria-expanded="true"] { border-color: var(--color-text); }

.combo__list {
  position: absolute;
  left: 22px;
  right: 22px;
  top: 112px;
  z-index: 5;
  padding: 4px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-m);
  background: var(--color-surface);
  box-shadow: 0 8px 24px -12px rgba(10, 18, 22, .3);
}

.combo__option {
  width: 100%;
  min-height: 40px;
  padding: 0 10px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text);
  font: 400 15px/1.2 'Geist', sans-serif;
  text-align: left;
  cursor: pointer;
}
.combo__option:hover { background: rgba(10, 122, 95, .08); }

.combo__empty {
  display: block;
  padding: 10px;
  font: 400 14px/1.3 'Geist', sans-serif;
  color: var(--color-text-tertiary);
}

/* ── 07.3 Search ────────────────────────────────────────────────────────── */

.search-field {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 6px 0 14px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
}

.search-field__icon {
  flex: none;
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--color-text-secondary);
  border-radius: 50%;
}

.search-field__input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--color-text);
  font: 400 16px/1 'Geist', sans-serif;
}
.search-field__input,
.search-field__input:focus-visible { outline: 0; }

.search-field__kbd {
  height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  border: 1px solid var(--color-hairline);
  border-radius: 6px;
  font: 500 11px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

/* ── 07.3 Number stepper ────────────────────────────────────────────────── */

.stepper {
  height: 48px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-m);
  background: var(--color-surface);
}

.stepper__button {
  width: 48px;
  height: 100%;
  border: 0;
  background: transparent;
  color: var(--color-text);
  font: 500 18px/1 'Geist Mono', monospace;
  cursor: pointer;
}
.stepper__button--dec { border-right: 1px solid var(--color-hairline); }
.stepper__button--inc { border-left: 1px solid var(--color-hairline); }

.stepper__input {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0 8px;
  border: 0;
  background: transparent;
  color: var(--color-text);
  text-align: right;
  font: 500 17px/1 'Geist', sans-serif;
  font-variant-numeric: tabular-nums;
}
.stepper__input,
.stepper__input:focus-visible { outline: 0; }

.stepper__unit {
  padding-right: 12px;
  font: 400 13px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

/* ── 07.3 Slider ────────────────────────────────────────────────────────── */

.slider__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.slider__output {
  font: 500 18px/1 'Geist', sans-serif;
  font-variant-numeric: tabular-nums;
}

.slider__range {
  width: 100%;
  height: 24px;
  accent-color: var(--color-action);
}

.slider__ticks {
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--color-hairline-strong) 0 1px, transparent 1px 10%);
}

.slider__scale {
  display: flex;
  justify-content: space-between;
  font: 400 11px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

/* ── 07.3 Date picker ───────────────────────────────────────────────────── */

.datepicker__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.datepicker__month { font: 500 15px/1 'Geist', sans-serif; }

.datepicker__selected {
  font: 400 13px/1 'Geist Mono', monospace;
  color: var(--color-text-secondary);
}

.datepicker__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  text-align: center;
}

.datepicker__dow {
  font: 500 10px/24px 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

.datepicker__day {
  height: 36px;
  border: 0;
  border-radius: var(--radius-m);
  background: transparent;
  color: var(--color-text);
  font: 500 13px/1 'Geist', sans-serif;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
}
.datepicker__day:disabled { color: var(--el-disabled-fg); }
.datepicker__day--today { text-decoration: underline; }
.datepicker__day[aria-pressed="true"] {
  background: var(--color-text);
  color: var(--color-canvas);
}

/* ── 07.3 File upload ───────────────────────────────────────────────────── */

.file-drop { cursor: pointer; }

.file-drop__zone {
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border: 1px dashed var(--color-hairline-strong);
  border-radius: 12px;
  text-align: center;
}

.file-drop__title { font: 500 15px/1.3 'Geist', sans-serif; }

.file-drop__hint {
  font: 400 13px/1.3 'Geist', sans-serif;
  color: var(--color-text-tertiary);
}

/* Visually hidden but still focusable/clickable through the label */
.file-drop__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

/* ── 07.4 Checkbox, radio, switch ───────────────────────────────────────── */

.choice-card { gap: 4px; }
.choice-card .mono-label { padding-bottom: 8px; }

.choice {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-text);
  font: 400 15px/1.3 'Geist', sans-serif;
  text-align: left;
  cursor: pointer;
}
.choice:disabled { color: var(--el-disabled-fg); }

.choice--switch {
  min-height: 48px;
  justify-content: space-between;
}

/* Checkbox box; the mark follows aria-checked */
.choice__box {
  flex: none;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-hairline-strong);
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--color-action-fg);
  font: 700 12px/1 'Geist', sans-serif;
}
.choice[aria-checked="true"] .choice__box,
.choice[aria-checked="mixed"] .choice__box {
  border-color: var(--color-action);
  background: var(--color-action);
}
.choice[aria-checked="true"] .choice__box::before  { content: "✓"; }
.choice[aria-checked="mixed"] .choice__box::before { content: "−"; }
.choice:disabled .choice__box {
  border-color: var(--color-hairline);
  background: var(--el-disabled-bg);
}

/* Radio dot: an inset shadow that grows when selected */
.choice__radio {
  flex: none;
  width: 20px;
  height: 20px;
  box-sizing: border-box;
  border: 1.5px solid var(--color-hairline-strong);
  border-radius: 50%;
  box-shadow: inset 0 0 0 0 var(--color-action);
  transition: box-shadow var(--dur-2) var(--ease-systole);
}
.choice[aria-checked="true"] .choice__radio {
  border-color: var(--color-action);
  box-shadow: inset 0 0 0 5px var(--color-action);
}
.choice:disabled .choice__radio { border-color: var(--color-hairline); }

/* Switch track + knob */
.switch {
  position: relative;
  flex: none;
  width: 44px;
  height: 26px;
  border-radius: var(--radius-pill);
  background: var(--el-switch-off);
  transition: background var(--dur-2);
}
.choice[aria-checked="true"] .switch { background: var(--color-action); }
.choice:disabled .switch { background: var(--el-disabled-bg); }

.switch__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--graphite-0);
  box-shadow: 0 1px 2px rgba(10, 18, 22, .3);
  transition: left var(--dur-2) var(--ease-systole);
}
.choice[aria-checked="true"] .switch__knob { left: 21px; }

/* ── 07.4 Segmented control ─────────────────────────────────────────────── */

.segmented {
  display: flex;
  padding: 3px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-pill);
}

.segmented__option {
  flex: 1;
  height: 38px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-secondary);
  font: 500 14px/1 'Geist', sans-serif;
  cursor: pointer;
  transition: background var(--dur-2);
}
.segmented__option[aria-checked="true"] {
  background: var(--color-text);
  color: var(--color-canvas);
}

/* ── 07.5 Filter chips + removable tags ─────────────────────────────────── */

.chip-group,
.tag-list,
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text);
  font: 500 14px/1 'Geist', sans-serif;
  cursor: pointer;
}
.chip[aria-pressed="true"] {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-canvas);
}
.chip[aria-pressed="true"] .chip__mark::before { content: "✓"; }

.tag {
  height: 30px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 4px 0 10px;
  border: 1px solid var(--color-hairline);
  border-radius: 6px;
  background: var(--color-surface-sunken);
  font: 400 13px/1 'Geist', sans-serif;
}

.tag__remove {
  width: 24px;
  height: 24px;
  border: 0;
  background: none;
  color: var(--color-text-secondary);
  font: 500 13px/1 'Geist Mono', monospace;
  cursor: pointer;
}

.tag-reset {
  height: 30px;
  padding: 0 10px;
  border: 1px dashed var(--color-hairline-strong);
  border-radius: 6px;
  background: none;
  color: var(--color-text-secondary);
  font: 400 13px/1 'Geist', sans-serif;
  cursor: pointer;
}

/* ── 07.5 Regulatory badges + status pills ──────────────────────────────── */

.reg-badge {
  height: 30px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-s);
  color: var(--color-text);
  font: 500 12px/1 'Geist Mono', monospace;
  letter-spacing: .04em;
}
.reg-badge--investigational {
  border-color: var(--status-medium-fg);
  background: var(--status-medium-bg);
  color: var(--status-medium-fg);
}

.status-pill {
  height: 28px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font: 500 13px/1 'Geist', sans-serif;
}
.status-pill--fault   { background: var(--status-high-bg);    color: var(--status-high-fg); }
.status-pill--due     { background: var(--status-medium-bg);  color: var(--status-medium-fg); }
.status-pill--update  { background: var(--status-low-bg);     color: var(--status-low-fg); }
.status-pill--passed  { background: var(--status-success-bg); color: var(--status-success-fg); }
.status-pill--offline { background: var(--el-tertiary);       color: var(--color-text-secondary); }

.status-pill__glyph { font: 600 11px/1 'Geist Mono', monospace; }

/* ── 07.5 Avatars + tooltip ─────────────────────────────────────────────── */

.avatar-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.avatar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-hairline-strong);
  border-radius: 50%;
  background: var(--color-surface-sunken);
}
.avatar--l { width: 56px; height: 56px; font: 500 18px/1 'Geist', sans-serif; }
.avatar--m { width: 40px; height: 40px; font: 500 14px/1 'Geist', sans-serif; }
.avatar--s { width: 32px; height: 32px; font: 500 12px/1 'Geist', sans-serif; }

.avatar__presence {
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--color-surface);
  border-radius: 50%;
  background: var(--status-success-fg);
}

.avatar-group { display: flex; }

.avatar-group__item {
  width: 32px;
  height: 32px;
  margin-left: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-surface);
  border-radius: 50%;
  background: var(--color-surface-sunken);
  font: 500 11px/1 'Geist', sans-serif;
}

.tooltip-demo {
  position: relative;
  display: inline-flex;
}

.tooltip-demo__trigger {
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text);
  font: 600 14px/1 'Geist Mono', monospace;
  cursor: help;
}

.tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  z-index: 5;
  width: 200px;
  padding: 10px 12px;
  transform: translateX(-50%);
  border-radius: var(--radius-m);
  background: var(--color-text);
  color: var(--color-canvas);
  font: 400 13px/1.4 'Geist', sans-serif;
}

/* ── 07.6 Dividers + calibration rules ──────────────────────────────────── */

.rule {
  height: 1px;
  background: var(--color-hairline);
}
.rule--strong { background: var(--color-hairline-strong); }

/* Fine ticks every 8 px, only the upper half drawn */
.rule--ticks-fine {
  position: relative;
  height: 14px;
  background: repeating-linear-gradient(90deg, var(--color-text-secondary) 0 1px, transparent 1px 8px);
  -webkit-mask: linear-gradient(#000 0 50%, transparent 50%);
  mask: linear-gradient(#000 0 50%, transparent 50%);
}

/* Major ticks every 80 px */
.rule--ticks-major {
  height: 14px;
  background: repeating-linear-gradient(90deg, var(--color-text) 0 1px, transparent 1px 80px);
}

.rule-scale {
  display: flex;
  justify-content: space-between;
  font: 400 11px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

.reg-marks {
  display: flex;
  gap: 24px;
}

.reg-marks__corner {
  width: 14px;
  height: 14px;
  border-left: 1px solid var(--color-text);
  border-top: 1px solid var(--color-text);
}

.reg-marks__cross {
  position: relative;
  width: 16px;
  height: 16px;
}
.reg-marks__cross::before,
.reg-marks__cross::after {
  content: "";
  position: absolute;
  background: var(--color-text);
}
.reg-marks__cross::before { left: 0; right: 0; top: 50%; height: 1px; }
.reg-marks__cross::after  { top: 0; bottom: 0; left: 50%; width: 1px; }

.reg-marks__caption {
  font: 400 12px/1 'Geist Mono', monospace;
  color: var(--color-text-secondary);
}

/* ── 07.6 Citation marker ───────────────────────────────────────────────── */

.cite-card { position: relative; }

.cite-states {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.cite-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.cite-state__name {
  font: 400 10px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

.cite-marker {
  min-width: 22px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--citation-radius);
  background: var(--color-surface);
  color: var(--color-text);
  font: 500 11px/1 'Geist Mono', monospace;
}
.cite-marker--hover { border-color: var(--color-action); color: var(--color-action); }
.cite-marker--focus { box-shadow: var(--el-focus-ring); }
.cite-marker--open  { border-color: var(--color-text); background: var(--color-text); color: var(--color-canvas); }

.claim {
  margin: 0;
  font: 400 16px/1.5 'Geist', sans-serif;
}

.claim__marker {
  margin-left: 6px;
  vertical-align: 2px;
  cursor: pointer;
}

.study-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-m);
  background: var(--color-surface-sunken);
  font: 400 13px/1.45 'Geist', sans-serif;
}

.study-card__source {
  font: 500 11px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

.study-card__note {
  font: 400 11px/1.4 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

/* ── 07.7 Progress bar + step bars ──────────────────────────────────────── */

.progress-demo__head {
  display: flex;
  justify-content: space-between;
  font: 500 14px/1 'Geist', sans-serif;
}

.progress-demo__value {
  font-family: 'Geist Mono', monospace;
  font-variant-numeric: tabular-nums;
}

.progress {
  height: 6px;
  overflow: hidden;
  border-radius: 3px;
  background: var(--color-hairline);
}

/* --value: current progress in % (set by k07-elements.js) */
.progress__fill {
  width: var(--value);
  height: 100%;
  background: var(--color-text);
  transition: width var(--dur-3) var(--ease-diastole);
}

.progress-demo__range { accent-color: var(--color-text); }

.step-bars {
  display: flex;
  gap: 4px;
}

.step-bars__step {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.step-bars__bar {
  height: 3px;
  border-radius: 2px;
  background: var(--color-hairline);
}
.step-bars__step--done .step-bars__bar { background: var(--color-text); }

.step-bars__label {
  font: 400 11px/1 'Geist Mono', monospace;
  color: var(--color-text-tertiary);
}

/* ── 07.7 LUMEN ring loader ─────────────────────────────────────────────── */

.ring-row {
  display: flex;
  align-items: center;
  gap: 28px;
}

.ring-loader {
  --size: 64px;
  position: relative;
  flex: none;
  width: var(--size);
  height: var(--size);
}
.ring-loader--m { --size: 40px; }
.ring-loader--s { --size: 24px; }

.ring-loader__outer,
.ring-loader__inner,
.ring-loader__arc,
.ring-loader__core {
  position: absolute;
  border-radius: 50%;
}

.ring-loader__outer {
  inset: 0;
  border: 1px solid var(--color-hairline-strong);
}

.ring-loader__inner {
  inset: calc(var(--size) * .18);
  border: 1px solid var(--color-hairline);
}

/* One revolution per 1000 ms = 60 bpm */
.ring-loader__arc {
  inset: 0;
  border: 2px solid transparent;
  border-top-color: var(--color-text);
  animation: lumenSpin 1000ms cubic-bezier(.45, 0, .2, 1) infinite;
}

.ring-loader__core {
  left: 50%;
  top: 50%;
  width: calc(var(--size) * .14);
  height: calc(var(--size) * .14);
  margin: calc(var(--size) * -.07);
  background: var(--color-action);
  animation: lumenBreath 1000ms ease-in-out infinite;
}

/* ── 07.7 Skeleton ──────────────────────────────────────────────────────── */

.skeleton {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skeleton__line {
  display: block;
  border-radius: 6px;
  background: var(--color-hairline);
  animation: lumenBreath 1000ms ease-in-out infinite;
}
.skeleton__line--eyebrow     { width: 40%;  height: 10px; }
.skeleton__line--title       { width: 90%;  height: 18px; }
.skeleton__line--title-short { width: 70%;  height: 18px; }
.skeleton__line--rule        { width: 100%; height: 1px; }
.skeleton__line--meta        { width: 55%;  height: 12px; }
.skeleton__line--button      { width: 30%;  height: 36px; border-radius: var(--radius-pill); }