/* =============================================================
   ADDON-ROW — V36 UX Phase 4 · DAV-N16
   Always-visible add-on selection row used in plan-report
   (chosen plan / lock view) and enrollment-modal. Replaces the
   prior collapsed 3-tier accordion pattern.
   ============================================================= */

.addon-row {
  --ar-ink:        var(--ink, #0E2A3A);
  --ar-cream:      var(--cream, #FFFFFF);
  --ar-lemon:      var(--lemon, #FFC857);
  --ar-blush:      var(--blush, #FFFDF6);
  --ar-pink:       var(--pink, #00B5D8);
  --ar-pink-dark:  var(--pink-dark, #007A93);
  --ar-mute:       var(--mute, #5D7C8E);
  --ar-rule:       var(--rule, #DDE9EE);

  position: relative;
  display: block;
  background: var(--ar-cream);
  border: 1.5px solid var(--ar-rule);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 0 0 10px;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--ar-ink);
  transition:
    border-color 180ms cubic-bezier(.22,.61,.36,1),
    background 180ms cubic-bezier(.22,.61,.36,1),
    box-shadow 180ms cubic-bezier(.22,.61,.36,1);
}
.addon-row:last-child { margin-bottom: 0; }

.addon-row.is-selected {
  border-color: var(--ar-ink);
  background: linear-gradient(180deg, #FFFDF1 0%, var(--ar-cream) 60%);
  box-shadow: 3px 3px 0 var(--ar-ink);
}

/* ─── HEAD ──────────────────────────────────────────────────── */
.addon-row__head {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 12px;
}

.addon-row__check {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 2px solid var(--ar-mute);
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    background 180ms cubic-bezier(.22,.61,.36,1),
    border-color 180ms cubic-bezier(.22,.61,.36,1),
    transform 120ms cubic-bezier(.22,.61,.36,1);
}
.addon-row__check:hover {
  border-color: var(--ar-ink);
  transform: scale(1.05);
}
.addon-row__check:focus-visible {
  outline: 2px solid var(--ar-pink);
  outline-offset: 2px;
}
.addon-row.is-selected .addon-row__check {
  background: var(--ar-ink);
  border-color: var(--ar-ink);
}
.addon-row.is-selected .addon-row__check::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 11px;
  border-right: 2.5px solid var(--ar-lemon);
  border-bottom: 2.5px solid var(--ar-lemon);
  transform: rotate(45deg) translate(-1px, -1px);
}

.addon-row__name {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  cursor: pointer;
}
.addon-row__name-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.addon-row__icon {
  font-size: 16px;
  line-height: 1;
}
.addon-row__cat {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ar-mute);
}
.addon-row__plan {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: 15.5px;
  line-height: 1.25;
  letter-spacing: -.005em;
  color: var(--ar-ink);
  word-break: break-word;
}
.addon-row__tier {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 3px;
  padding: 2px 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ar-ink);
  background: var(--ar-cream);
  border: 1.5px solid var(--ar-ink);
  border-radius: 999px;
  line-height: 1;
}
.addon-row__tier--recommended {
  background: var(--ar-lemon);
}

.addon-row__price {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: 22px;
  line-height: 1;
  letter-spacing: -.015em;
  color: var(--ar-ink);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
}
.addon-row__price-suffix {
  font-size: 0.55em;
  font-style: italic;
  font-weight: 500;
  color: var(--ar-mute);
  margin-left: 1px;
}

.addon-row__details-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid transparent;
  font: inherit;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ar-pink-dark);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 180ms, color 180ms;
  white-space: nowrap;
}
.addon-row__details-toggle:hover {
  background: rgba(0,181,216,0.08);
  color: var(--ar-pink-dark);
}
.addon-row__details-toggle:focus-visible {
  outline: 2px solid var(--ar-pink);
  outline-offset: 2px;
}
.addon-row__details-chev {
  font-size: 14px;
  line-height: 1;
  transition: transform 180ms cubic-bezier(.22,.61,.36,1);
}
.addon-row.is-open .addon-row__details-chev {
  transform: rotate(90deg);
}

/* ─── STATS (always visible) ────────────────────────────────── */
.addon-row__stats {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--ar-rule);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  font-size: 12.5px;
  line-height: 1.45;
}
.addon-row__stat {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  white-space: nowrap;
}
.addon-row__stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ar-mute);
}
.addon-row__stat-value {
  font-weight: 600;
  color: var(--ar-ink);
  font-variant-numeric: tabular-nums;
}
.addon-row__summary {
  flex: 1 1 240px;
  min-width: 0;
  color: var(--ar-ink);
  font-style: italic;
}

/* ─── DETAILS (cascade-open) ────────────────────────────────── */
.addon-row__details {
  display: none;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--ar-rule);
  font-size: 13px;
  line-height: 1.55;
  color: var(--ar-ink);
}
.addon-row.is-open .addon-row__details {
  display: block;
}
.addon-row__details-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ar-mute);
  margin: 0 0 6px;
}
.addon-row__details-title + * {
  margin-top: 0;
}
.addon-row__details-title:not(:first-child) {
  margin-top: 12px;
}
.addon-row__benefits {
  margin: 0 0 6px;
  padding: 0 0 0 18px;
  list-style: disc;
  color: var(--ar-ink);
}
.addon-row__benefits li {
  margin: 0 0 3px;
}
.addon-row__faq {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.addon-row__faq-q {
  font-weight: 700;
  color: var(--ar-ink);
  font-size: 12.5px;
}
.addon-row__faq-a {
  font-size: 12.5px;
  color: var(--ar-mute);
  margin: 0 0 4px;
}
.addon-row__brochure {
  display: inline-block;
  margin-top: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ar-pink-dark);
  text-decoration: none;
  border-bottom: 1.5px solid currentColor;
  padding-bottom: 2px;
}
.addon-row__brochure:hover {
  color: var(--ar-pink);
}
.addon-row__details-empty {
  color: var(--ar-mute);
  font-style: italic;
  font-size: 12.5px;
}

/* ─── MOBILE ────────────────────────────────────────────────── */
@media (max-width: 540px) {
  .addon-row {
    padding: 12px 14px;
  }
  .addon-row__head {
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
      "check name price"
      "blank blank toggle";
    row-gap: 6px;
  }
  .addon-row__check { grid-area: check; }
  .addon-row__name { grid-area: name; }
  .addon-row__price { grid-area: price; font-size: 19px; }
  .addon-row__details-toggle {
    grid-area: toggle;
    justify-self: end;
  }
  .addon-row__plan { font-size: 14.5px; }
  .addon-row__stats { font-size: 12px; gap: 6px 10px; }
}

/* ─── A11Y / HCM ────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .addon-row,
  .addon-row__check,
  .addon-row__details-chev,
  .addon-row__details-toggle {
    transition: none !important;
  }
}
@media (forced-colors: active) {
  .addon-row {
    border: 1.5px solid CanvasText !important;
    background: Canvas !important;
  }
  .addon-row.is-selected {
    border: 2px solid Highlight !important;
    background: Canvas !important;
    box-shadow: none !important;
  }
  .addon-row__check {
    border: 2px solid CanvasText !important;
    background: Canvas !important;
  }
  .addon-row.is-selected .addon-row__check {
    background: Highlight !important;
    border-color: Highlight !important;
  }
  .addon-row.is-selected .addon-row__check::after {
    border-color: HighlightText !important;
  }
  .addon-row__details-toggle {
    border: 1px solid CanvasText !important;
  }
}