/* Comparative persona review — "Measured Intelligence" language.
   Light workspace surface, Buyers section accent, square geometry, IBM Plex,
   restrained motion. See docs/design-language/DESIGN_LANGUAGE_GUIDE.md §5.8. */

.persona-compare {
  --pc-canvas: #F4F4F4;
  --pc-surface: #FFFFFF;
  --pc-ink: #161616;
  --pc-text-secondary: #525252;
  --pc-text-muted: #6F6F6F;
  --pc-border: #C6C6C6;
  --pc-border-soft: #E0E0E0;
  --pc-accent: #8A3FFC;       /* Buyers */
  --pc-accent-soft: #E8DAFF;
  --pc-accent-ink: #5D0F9E;
  --pc-action: #0F62FE;

  min-height: 100dvh;
  padding: 28px clamp(16px, 4vw, 48px) 64px;
  background: var(--pc-canvas);
  color: var(--pc-ink);
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
}

/* Header */
.persona-compare__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--pc-border);
}
.persona-compare__heading { display: flex; gap: 14px; }
.persona-compare__mark {
  width: 24px; height: 24px; flex: 0 0 24px; margin-top: 4px;
  background: var(--pc-accent); border-radius: 2px;
}
.persona-compare__eyebrow {
  margin: 0 0 6px; font-family: "IBM Plex Mono", monospace;
  font-size: 10px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--pc-accent-ink);
}
.persona-compare__title { margin: 0; font-size: clamp(21px, 3vw, 28px); font-weight: 600; line-height: 1.2; }
.persona-compare__lede { margin: 6px 0 0; max-width: 62ch; font-size: 14px; color: var(--pc-text-secondary); line-height: 1.5; }

.persona-compare__ghost-btn,
.persona-compare__primary-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 40px; padding: 0 16px; border-radius: 2px;
  font-size: 13px; font-weight: 600; cursor: pointer; text-decoration: none;
  transition: background 140ms ease-out, border-color 140ms ease-out;
}
.persona-compare__ghost-btn { background: var(--pc-surface); border: 1px solid var(--pc-border); color: var(--pc-ink); }
.persona-compare__ghost-btn:hover { border-color: var(--pc-ink); }
.persona-compare__primary-btn { background: var(--pc-action); border: 1px solid var(--pc-action); color: #fff; }
.persona-compare__primary-btn:hover { background: #0043CE; }

/* Empty state */
.persona-compare__empty {
  display: grid; justify-items: start; gap: 8px;
  padding: 32px; background: var(--pc-surface); border: 1px solid var(--pc-border);
  max-width: 520px;
}
.persona-compare__empty-title { margin: 4px 0 0; font-size: 16px; font-weight: 600; }
.persona-compare__empty-body { margin: 0 0 8px; font-size: 14px; color: var(--pc-text-secondary); }

/* Grid */
.persona-compare__grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(288px, 1fr));
  align-items: stretch;
}

/* Flip card */
.persona-compare-card { perspective: 1400px; min-height: 384px; }
.persona-compare-card__inner {
  position: relative; height: 100%; min-height: 384px;
  transform-style: preserve-3d;
  transition: transform 340ms cubic-bezier(.2, 0, .2, 1);
}
.persona-compare-card.is-flipped .persona-compare-card__inner { transform: rotateY(180deg); }

.persona-compare-card__face {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  padding: 18px; background: var(--pc-surface);
  border: 1px solid var(--pc-border); border-top: 3px solid var(--pc-accent);
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  overflow-y: auto;
}
.persona-compare-card__back { transform: rotateY(180deg); }
.persona-compare-card.is-top-match .persona-compare-card__face { box-shadow: inset 0 0 0 1px var(--pc-accent); }

.persona-compare-card__topline { display: flex; align-items: center; justify-content: space-between; }
.persona-compare-card__role {
  font-family: "IBM Plex Mono", monospace; font-size: 10px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--pc-accent-ink); background: var(--pc-accent-soft);
  padding: 3px 8px; border-radius: 2px;
}
.persona-compare-card__rank {
  font-family: "IBM Plex Mono", monospace; font-size: 10px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--pc-text-muted);
}
.persona-compare-card.is-top-match .persona-compare-card__rank { color: var(--pc-accent-ink); }

.persona-compare-card__name { margin: 12px 0 2px; font-size: 16px; font-weight: 600; line-height: 1.3; }
.persona-compare-card__meta { margin: 0; font-size: 12px; color: var(--pc-text-muted); }

/* Match meter */
.persona-compare-card__match { margin: 16px 0 12px; }
.persona-compare-card__match-head { display: flex; align-items: baseline; justify-content: space-between; }
.persona-compare-card__match-label {
  font-family: "IBM Plex Mono", monospace; font-size: 9px; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--pc-text-muted);
}
.persona-compare-card__match-value { font-size: 34px; font-weight: 300; line-height: 1; color: var(--pc-ink); }
.persona-compare-card__match[data-state="loading"] .persona-compare-card__match-value { color: var(--pc-border); }
.persona-compare-card__meter { position: relative; height: 3px; margin-top: 8px; background: var(--pc-border-soft); overflow: hidden; }
.persona-compare-card__meter-fill { position: absolute; inset: 0 100% 0 0; width: 0; background: var(--pc-accent); transition: width 420ms cubic-bezier(.2, 0, .2, 1); }
.persona-compare-card__headline { margin: 10px 0 0; font-size: 13px; font-weight: 600; color: var(--pc-ink); line-height: 1.35; }

/* Reasons */
.persona-compare-card__reasons,
.persona-compare-card__back-reasons { list-style: none; margin: 4px 0 0; padding: 0; display: grid; gap: 8px; }
.persona-compare-card__reason {
  position: relative; padding-left: 16px; font-size: 13px; line-height: 1.4; color: var(--pc-text-secondary);
}
.persona-compare-card__reason::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 6px; height: 6px;
  background: var(--pc-accent); border-radius: 2px;
}
.persona-compare-card__reason.is-empty { color: var(--pc-text-muted); }
.persona-compare-card__reason.is-empty::before { background: var(--pc-border); }
.persona-compare-card__reason.is-skeleton {
  height: 12px; padding-left: 0; border-radius: 2px;
  background: linear-gradient(90deg, #ececec 25%, #f5f5f5 37%, #ececec 63%);
  background-size: 400% 100%; animation: pc-shimmer 1.4s ease infinite;
}
.persona-compare-card__reason.is-skeleton::before { display: none; }
@keyframes pc-shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }

.persona-compare-card__error { margin: 8px 0 0; font-size: 12px; color: #9F1853; }
.persona-compare-card__retry {
  margin-top: 6px; background: none; border: 1px solid var(--pc-border); border-radius: 2px;
  padding: 4px 10px; font-size: 12px; font-weight: 600; cursor: pointer; color: var(--pc-ink);
}

/* Card actions */
.persona-compare-card__actions { margin-top: auto; padding-top: 14px; display: flex; gap: 8px; }
.persona-compare-card__back-eyebrow {
  margin: 0 0 12px; font-family: "IBM Plex Mono", monospace; font-size: 10px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--pc-accent-ink);
}
.persona-compare-card__detail-btn,
.persona-compare-card__expand-btn {
  min-height: 36px; padding: 0 12px; border-radius: 2px; font-size: 12px; font-weight: 600;
  cursor: pointer; transition: background 140ms ease-out, border-color 140ms ease-out;
}
.persona-compare-card__detail-btn { background: var(--pc-accent-soft); border: 1px solid transparent; color: var(--pc-accent-ink); }
.persona-compare-card__detail-btn:hover { border-color: var(--pc-accent); }
.persona-compare-card__back .persona-compare-card__detail-btn { margin-top: auto; }
.persona-compare-card__expand-btn { background: var(--pc-surface); border: 1px solid var(--pc-border); color: var(--pc-ink); }
.persona-compare-card__expand-btn:hover { border-color: var(--pc-ink); }

/* Detail (facts / groups) — shared by back-of-card clone and modal */
.persona-compare-detail__facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0 0 16px; background: var(--pc-border-soft); border: 1px solid var(--pc-border-soft); }
.persona-compare-detail__fact { background: var(--pc-surface); padding: 10px 12px; }
.persona-compare-detail__fact dt { font-family: "IBM Plex Mono", monospace; font-size: 9px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--pc-text-muted); }
.persona-compare-detail__fact dd { margin: 4px 0 0; font-size: 13px; font-weight: 600; }
.persona-compare-detail__summary { margin: 0 0 16px; font-size: 14px; line-height: 1.55; color: var(--pc-text-secondary); }
.persona-compare-detail__group { margin-bottom: 16px; }
.persona-compare-detail__group-label { margin: 0 0 6px; font-family: "IBM Plex Mono", monospace; font-size: 9px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--pc-text-muted); }
.persona-compare-detail__list { margin: 0; padding-left: 18px; display: grid; gap: 4px; font-size: 13px; line-height: 1.45; color: var(--pc-text-secondary); }

/* Growing modal */
.persona-compare-modal { position: fixed; inset: 0; z-index: 60; display: flex; align-items: center; justify-content: center; padding: 24px; }
.persona-compare-modal[hidden] { display: none; }
.persona-compare-modal__backdrop { position: absolute; inset: 0; background: rgba(22, 22, 22, 0.5); animation: pc-fade 180ms ease-out; }
@keyframes pc-fade { from { opacity: 0; } to { opacity: 1; } }
.persona-compare-modal__dialog {
  position: relative; width: min(720px, 100%); max-height: 86dvh; overflow-y: auto;
  background: var(--pc-surface); border: 1px solid var(--pc-border); border-top: 3px solid var(--pc-accent);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28); outline: none;
}
.persona-compare-modal__header { position: sticky; top: 0; display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 20px 24px; background: var(--pc-surface); border-bottom: 1px solid var(--pc-border-soft); }
.persona-compare-modal__role { font-family: "IBM Plex Mono", monospace; font-size: 10px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--pc-accent-ink); }
.persona-compare-modal__title { margin: 6px 0 0; font-size: 21px; font-weight: 600; line-height: 1.2; }
.persona-compare-modal__close { background: none; border: none; font-size: 26px; line-height: 1; cursor: pointer; color: var(--pc-text-muted); padding: 0 4px; }
.persona-compare-modal__close:hover { color: var(--pc-ink); }
.persona-compare-modal__body { padding: 20px 24px 28px; }
.persona-compare-modal__insight { margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--pc-border-soft); }
.persona-compare-modal__match { display: flex; align-items: baseline; gap: 10px; }
.persona-compare-modal__match-value { font-size: 40px; font-weight: 300; line-height: 1; }
.persona-compare-modal__match-label { font-family: "IBM Plex Mono", monospace; font-size: 10px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--pc-text-muted); }
.persona-compare-modal__headline { margin: 10px 0 0; font-size: 15px; font-weight: 600; }
.persona-compare-modal__detail { display: block; }

/* Focus visibility */
.persona-compare :focus-visible,
.persona-compare-modal :focus-visible { outline: 2px solid var(--pc-action); outline-offset: 2px; }

/* Responsive */
@media (max-width: 760px) {
  .persona-compare__header { flex-direction: column; }
  .persona-compare__grid { grid-template-columns: 1fr; }
  .persona-compare-detail__facts { grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .persona-compare-card__inner { transition: none; }
  .persona-compare-card__meter-fill { transition: none; }
  .persona-compare-card__reason.is-skeleton { animation: none; }
  .persona-compare-modal__backdrop { animation: none; }
}