/* ===== FORMS: SPLIT TESTS (frm-split.css) ===== */
/* Owned by form-split.js (Split Tests subview: list, 3-step wizard modal,
   side-by-side results). Every rule is scoped to .frm-split / the
   #formSplitModal content (.frm-split-wizard / .frm-split-complete) so other
   Forms fragments can't collide. The generic form-table.js component, the
   shared primitives (.frm-btn / .frm-input / .frm-select / .frm-field /
   .frm-badge / .frm-card / .frm-empty / .frm-modal-*) and their light/dark
   theming ALL come from frm-shared.css — this file only adds split-specific
   surfaces. Colors are exclusively kanban design tokens from index.css, so the
   dark default and [data-theme=light] both work with no hardcoded values. */

/* ── page shell ── */
/* Own cap to match the sibling data-view panes (.frm-dv / .frm-sub-pane both
   1400px) — without it the split-tests list table (and the results view)
   would only inherit the outer #tab-forms 1760px cap, which still reads
   sparse for this simpler list surface on an ultrawide monitor. The results
   view's .frm-split-cards already carries its own tighter 980px cap. */
.frm-split {
  max-width: 1400px;
  margin: 0 auto;
}

/* ── list header ── */
.frm-split-head {
  display: flex;
  align-items: center;
  gap: var(--s3);
  margin-bottom: var(--s5);
  flex-wrap: wrap;
}
.frm-split-head-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r3);
  background: var(--accent-dim);
  color: var(--accent);
  flex-shrink: 0;
}
.frm-split-head-icon .frm-ico {
  width: 20px;
  height: 20px;
}
.frm-split-head-titles {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-right: auto;
  min-width: 0;
}
.frm-split-title {
  display: flex;
  align-items: center;
  gap: var(--s2);
  font-size: var(--fz-xl);
  font-weight: var(--fw-bold);
  color: var(--text);
}
.frm-split-subtitle {
  font-size: var(--fz-sm);
  color: var(--text3);
  line-height: var(--lh-snug);
  max-width: 62ch;
}
.frm-split-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 20px;
  padding: 0 7px;
  font-size: var(--fz-xs);
  font-weight: var(--fw-semibold);
  color: var(--text3);
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.frm-split-new-btn {
  flex-shrink: 0;
}

/* ── loading state ── */
.frm-split .frm-loading,
.frm-split-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s2);
  color: var(--text3);
  font-size: var(--fz-base);
  padding: var(--s7);
}
.frm-split-loading .frm-ico {
  animation: frmSplitSpin 1s linear infinite;
}
@keyframes frmSplitSpin {
  to {
    transform: rotate(360deg);
  }
}

/* ── empty / error state (scoped so it beats the bare .frm-empty in frm-list) ── */
.frm-split .frm-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--card);
  border: 1px dashed var(--border2);
  border-radius: var(--r4);
  padding: var(--s8) var(--s5);
}
.frm-split .frm-empty-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--card2);
  color: var(--text3);
  margin-bottom: var(--s4);
}
.frm-split .frm-empty-icon .frm-ico {
  width: 22px;
  height: 22px;
}
.frm-split .frm-empty-title {
  color: var(--text);
  font-size: var(--fz-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--s2);
}
.frm-split .frm-empty-sub {
  color: var(--text3);
  font-size: var(--fz-base);
  max-width: 400px;
  line-height: var(--lh-normal);
  margin-bottom: var(--s4);
}

/* ── list-table cells (table chrome itself lives in frm-shared.css) ── */
.frm-split-name {
  color: var(--text);
  font-weight: var(--fw-semibold);
}
.frm-split-metric-cell {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.frm-split-metric-cell .frm-ico {
  width: 14px;
  height: 14px;
  color: var(--text3);
}

/* proportion bar — shared base for the list % cell and the wizard slider */
.frm-split-ratio-bar {
  display: flex;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--track);
}
.frm-split-ratio-a {
  background: var(--purple);
  transition: width 0.16s ease;
}
.frm-split-ratio-b {
  background: var(--accent);
  transition: width 0.16s ease;
}
.frm-split-ratio {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
}
.frm-split-ratio .frm-split-ratio-bar {
  flex: 0 0 auto;
  width: 64px;
  height: 7px;
}
.frm-split-ratio-text {
  font-size: var(--fz-sm);
  color: var(--text2);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* row actions + embed copy */
.frm-split-actions {
  display: inline-flex;
  gap: var(--s1);
  justify-content: flex-end;
}
.frm-split-act-danger:hover {
  color: var(--red);
  background: color-mix(in srgb, var(--red) 12%, transparent);
}
.frm-split-embed-btn:hover {
  color: var(--accent);
}

/* ── status badge (geometry from .frm-badge; split adds the state colors) ── */
.frm-split-badge-running {
  color: var(--green);
  background: color-mix(in srgb, var(--green) 14%, transparent);
}
.frm-split-badge-paused {
  color: var(--gold);
  background: color-mix(in srgb, var(--gold) 14%, transparent);
}
.frm-split-badge-completed {
  color: var(--accent);
  background: var(--accent-dim);
}
.frm-split-winner-sub {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: var(--s2);
  font-size: var(--fz-sm);
  color: var(--gold);
  white-space: nowrap;
  vertical-align: middle;
}
.frm-split-winner-sub .frm-ico {
  width: 13px;
  height: 13px;
}

/* ============================================================= */
/* WIZARD + COMPLETE PICKER (inside #formSplitModal)             */
/* ============================================================= */
.frm-split-wizard,
.frm-split-complete {
  display: flex;
  flex-direction: column;
  gap: var(--s4);
  min-width: min(480px, 84vw);
}
.frm-split-wizard .frm-modal-actions,
.frm-split-complete .frm-modal-actions {
  margin-top: var(--s2);
}
.frm-split-wiz-head {
  display: flex;
  align-items: center;
  gap: var(--s3);
}
.frm-split-wiz-head-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--r3);
  background: var(--accent-dim);
  color: var(--accent);
  flex-shrink: 0;
}
.frm-split-wiz-head-icon .frm-ico {
  width: 20px;
  height: 20px;
}
.frm-split-wiz-head .frm-modal-title {
  margin: 0;
}

/* step indicator: marker circle + label, connected by a rule between steps */
.frm-split-steps {
  display: flex;
  align-items: center;
  gap: var(--s2);
}
.frm-split-step {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  white-space: nowrap;
}
.frm-split-step-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1.5px solid var(--border2);
  background: var(--bg2);
  color: var(--text3);
  flex-shrink: 0;
  transition:
    background 0.18s,
    border-color 0.18s,
    color 0.18s,
    box-shadow 0.18s;
}
.frm-split-step-marker .frm-ico {
  width: 14px;
  height: 14px;
}
.frm-split-step-label {
  font-size: var(--fz-sm);
  font-weight: var(--fw-medium);
  color: var(--text3);
}
.frm-split-step-active .frm-split-step-marker {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 4px var(--accent-dim);
}
.frm-split-step-active .frm-split-step-label {
  color: var(--text);
  font-weight: var(--fw-semibold);
}
.frm-split-step-done .frm-split-step-marker {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.frm-split-step-done .frm-split-step-label {
  color: var(--text2);
}
.frm-split-step-sep {
  flex: 1 1 auto;
  min-width: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--border2);
}
.frm-split-step-done + .frm-split-step-sep {
  background: color-mix(in srgb, var(--accent) 55%, var(--border2));
}

/* quick-tag chips */
.frm-split-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}
.frm-split-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--card2);
  border: 1px solid var(--border2);
  border-radius: 999px;
  color: var(--text2);
  font-size: var(--fz-sm);
  font-family: inherit;
  padding: 5px 12px;
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s,
    background 0.15s;
}
.frm-split-chip .frm-ico {
  width: 12px;
  height: 12px;
  color: var(--text3);
}
.frm-split-chip:hover {
  color: var(--text);
  border-color: var(--border3);
}
.frm-split-chip.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.frm-split-chip.active .frm-ico {
  color: var(--accent);
}

/* inline hint (step 2 + complete picker) */
.frm-split-hint {
  display: flex;
  align-items: flex-start;
  gap: var(--s2);
  margin: 0;
  font-size: var(--fz-sm);
  color: var(--text3);
  line-height: var(--lh-normal);
}
.frm-split-hint .frm-ico {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--text3);
}
.frm-split-hint b {
  color: var(--text2);
}

/* validation error line (reserved height so steps don't jump) */
.frm-split-wiz-error {
  min-height: 18px;
  font-size: var(--fz-sm);
  color: var(--red);
}

/* traffic split control */
.frm-split-traffic {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}
.frm-split-traffic-legend {
  display: flex;
  justify-content: space-between;
  gap: var(--s4);
}
.frm-split-traffic-arm {
  display: inline-flex;
  align-items: center;
  font-size: var(--fz-sm);
  color: var(--text2);
}
.frm-split-traffic-arm b {
  margin-left: 5px;
  color: var(--text);
  font-weight: var(--fw-semibold);
  font-variant-numeric: tabular-nums;
}
.frm-split-traffic-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 6px;
}
.frm-split-traffic-a .frm-split-traffic-dot {
  background: var(--purple);
}
.frm-split-traffic-b .frm-split-traffic-dot {
  background: var(--accent);
}
.frm-split-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: var(--track);
  cursor: pointer;
  margin: 2px 0 0;
}
.frm-split-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--card);
  box-shadow:
    var(--shadow-sm),
    0 0 0 1px var(--border2);
  cursor: pointer;
  transition: transform 0.12s;
}
.frm-split-slider::-webkit-slider-thumb:hover {
  transform: scale(1.12);
}
.frm-split-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--card);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
.frm-split-slider::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--track);
}
.frm-split-slider:focus-visible {
  outline: none;
}
.frm-split-slider:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px var(--accent-dim);
}
.frm-split-slider:focus-visible::-moz-range-thumb {
  box-shadow: 0 0 0 4px var(--accent-dim);
}
.frm-split-pct-label {
  font-size: var(--fz-sm);
  color: var(--text3);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* complete picker: two full-width arm cards */
.frm-split-complete-btns {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}
.frm-split-complete-btn {
  justify-content: flex-start;
  gap: var(--s3);
  width: 100%;
  padding: var(--s3) var(--s4);
  text-align: left;
}
.frm-split-complete-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r2);
  background: var(--accent-dim);
  color: var(--accent);
  flex-shrink: 0;
}
.frm-split-complete-ico .frm-ico {
  width: 16px;
  height: 16px;
}
.frm-split-complete-txt {
  flex: 1;
  min-width: 0;
  white-space: normal;
  font-weight: var(--fw-semibold);
  color: var(--text);
}
.frm-split-complete-go {
  display: inline-flex;
  flex-shrink: 0;
  color: var(--text3);
  transition: color 0.15s;
}
.frm-split-complete-btn:hover .frm-split-complete-go {
  color: var(--accent);
}

/* ============================================================= */
/* RESULTS VIEW                                                  */
/* ============================================================= */
.frm-split-back {
  margin-bottom: var(--s4);
}
.frm-split-results-head {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  margin-bottom: var(--s5);
}
.frm-split-results-title {
  display: flex;
  align-items: center;
  gap: var(--s3);
  flex-wrap: wrap;
  font-size: var(--fz-2xl);
  font-weight: var(--fw-bold);
  color: var(--text);
}
.frm-split-results-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2) var(--s4);
  font-size: var(--fz-sm);
  color: var(--text3);
}
.frm-split-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.frm-split-meta-item .frm-ico {
  width: 14px;
  height: 14px;
  color: var(--text3);
}
.frm-split-meta-item b {
  color: var(--text2);
  font-weight: var(--fw-semibold);
}
.frm-split-hypothesis {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 720px;
  background: var(--card2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--r2);
  padding: var(--s3) var(--s4);
}
.frm-split-hypothesis-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fz-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
}
.frm-split-hypothesis-label .frm-ico {
  width: 13px;
  height: 13px;
}
.frm-split-hypothesis p {
  margin: 0;
  font-size: var(--fz-base);
  color: var(--text2);
  line-height: var(--lh-normal);
  white-space: pre-line;
}
.frm-split-embed-btn {
  align-self: flex-start;
}

/* side-by-side arm cards (base card chrome from .frm-card) */
.frm-split-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--s4);
  max-width: 980px;
  margin-bottom: var(--s4);
  align-items: stretch;
}
.frm-split-card {
  display: flex;
  flex-direction: column;
  gap: var(--s4);
}
.frm-split-card-winner {
  border-color: var(--gold);
  box-shadow:
    0 0 0 1px var(--gold),
    var(--shadow-sm);
}
.frm-split-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s2);
}
.frm-split-card-role {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fz-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text3);
}
.frm-split-card-role .frm-ico {
  width: 14px;
  height: 14px;
}
.frm-split-card-role-control {
  color: var(--purple);
}
.frm-split-card-role-variant {
  color: var(--accent);
}
.frm-split-winner-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fz-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gold);
  background: color-mix(in srgb, var(--gold) 15%, transparent);
  border-radius: 999px;
  padding: 3px 10px;
}
.frm-split-winner-chip .frm-ico {
  width: 13px;
  height: 13px;
}
.frm-split-card-name {
  font-size: var(--fz-lg);
  font-weight: var(--fw-bold);
  color: var(--text);
  line-height: var(--lh-snug);
}

/* session-count tiles */
.frm-split-sessions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s2);
}
.frm-split-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r3);
  padding: var(--s3) var(--s2);
  text-align: center;
}
.frm-split-stat-ico {
  display: inline-flex;
  color: var(--text3);
}
.frm-split-stat-ico .frm-ico {
  width: 14px;
  height: 14px;
}
.frm-split-stat b {
  font-size: var(--fz-xl);
  font-weight: var(--fw-bold);
  color: var(--text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.frm-split-stat-label {
  font-size: var(--fz-xs);
  color: var(--text3);
}

/* form-wide counter chips */
.frm-split-counters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}
.frm-split-counter {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fz-xs);
  color: var(--text3);
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: var(--r1);
  padding: 3px 8px;
  white-space: nowrap;
}
.frm-split-counter b {
  color: var(--text2);
  font-weight: var(--fw-semibold);
  font-variant-numeric: tabular-nums;
}

/* per-metric rate rows (winner metric highlighted) */
.frm-split-rates {
  display: flex;
  flex-direction: column;
  gap: var(--s1);
}
.frm-split-rate {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  padding: var(--s2) var(--s3);
  border-radius: var(--r2);
  border: 1px solid transparent;
}
.frm-split-rate-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fz-base);
  color: var(--text2);
}
.frm-split-rate-label .frm-ico {
  width: 14px;
  height: 14px;
}
.frm-split-rate-star {
  color: var(--gold);
}
.frm-split-rate-value {
  display: inline-flex;
  align-items: baseline;
  font-weight: var(--fw-semibold);
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.frm-split-rate-hot {
  background: var(--accent-dim);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}
.frm-split-rate-hot .frm-split-rate-label {
  color: var(--accent);
  font-weight: var(--fw-semibold);
}
.frm-split-lift {
  margin-left: var(--s2);
  font-size: var(--fz-sm);
  font-weight: var(--fw-semibold);
}
.frm-split-lift-up {
  color: var(--green);
}
.frm-split-lift-down {
  color: var(--red);
}
.frm-split-lift-flat {
  color: var(--text3);
}
.frm-split-declare {
  width: 100%;
  margin-top: auto;
}
.frm-split-disclaimer {
  display: flex;
  align-items: flex-start;
  gap: var(--s2);
  max-width: 980px;
  font-size: var(--fz-sm);
  color: var(--text3);
  line-height: var(--lh-normal);
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: var(--r3);
  padding: var(--s3) var(--s4);
}
.frm-split-disclaimer .frm-ico {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--gold);
}

/* ============================================================= */
/* RESPONSIVE (<= 640px)                                         */
/* ============================================================= */
@media (max-width: 640px) {
  .frm-split-head {
    gap: var(--s2);
  }
  .frm-split-head-titles {
    margin-right: 0;
    flex: 1 1 auto;
  }
  .frm-split-new-btn {
    width: 100%;
  }
  .frm-split-results-title {
    font-size: var(--fz-xl);
  }
  .frm-split-cards {
    grid-template-columns: 1fr;
  }
  .frm-split-sessions {
    grid-template-columns: repeat(2, 1fr);
  }
  .frm-split-step-label {
    display: none;
  }
  .frm-split-steps {
    gap: var(--s1);
  }
}