/* ==========================================================================
   Crypto POS Compatibility Center (Phase 0)
   Loaded only on /tools/pos-compatibility/* pages (see base.html guard).
   Reuses the site :root tokens; adds POS-scoped semantic colors here so the
   global palette stays untouched. All colors chosen for WCAG AA contrast and
   paired with text + shape so meaning never depends on color alone.
   NOTE: uses --muted (not the undefined --ink-muted).
   ========================================================================== */
.pos-scope {
  /* Categorical level accents (hue = kind, not quality). */
  --pos-native:   #0f7a4d;   /* reuse positive green */
  --pos-official: #1d4ed8;   /* accent blue */
  --pos-third:    #1741ac;   /* deeper blue */
  --pos-parallel: #9a5b17;   /* warm amber-brown (distinct, not alarming) */
  --pos-none:     #64748b;   /* muted slate */

  /* Rating bands. */
  --pos-band-excellent: #0f7a4d;
  --pos-band-good:      #2f855a;
  --pos-band-fair:      #9a5b17;
  --pos-band-poor:      #b0341d;
  --pos-band-unknown:   #64748b;
  --pos-band-na:        #94a3b8;

  --pos-warn-bg:   #fff7ed;
  --pos-warn-line: #f0b46a;
  --pos-warn-ink:  #9a5b17;
}

/* ----- Section scaffolding ----- */
.pos-section { padding: 40px 0; }
.pos-section--tight { padding: 24px 0; }
.pos-lede { max-width: var(--maxw-prose); }

/* ----- Compatibility-Level badge ----- */
.pos-badge {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; font-size: .82rem; font-weight: 640;
  background: var(--surface); color: var(--ink); text-decoration: none;
  line-height: 1;
}
.pos-badge--sm { font-size: .74rem; padding: 4px 10px; gap: 6px; }
a.pos-badge:hover { border-color: var(--accent); }
.pos-badge__glyph { display: inline-flex; gap: 2px; align-items: center; }
.pos-badge__pip {
  width: 6px; height: 12px; border-radius: 2px;
  background: var(--line); display: inline-block;
}
.pos-badge__lv { color: var(--muted); font-variant-numeric: tabular-nums; }
/* Level-specific fill: shape (filled pips) + color together. */
.pos-level--native    .pos-badge__pip.is-filled { background: var(--pos-native); }
.pos-level--official  .pos-badge__pip.is-filled { background: var(--pos-official); }
.pos-level--third-party .pos-badge__pip.is-filled { background: var(--pos-third); }
.pos-level--parallel  .pos-badge__pip.is-filled { background: var(--pos-parallel); }
.pos-level--not-practical .pos-badge__pip.is-filled { background: var(--pos-none); }
.pos-level--native    { border-color: var(--pos-native); }
.pos-level--official  { border-color: var(--pos-official); }
.pos-level--third-party { border-color: var(--pos-third); }
.pos-level--parallel  { border-color: var(--pos-parallel); }
.pos-level--not-practical { border-color: var(--pos-none); }

/* ----- Recommendation chip ----- */
.pos-rec--positive { color: #0f7a4d; }
.pos-rec--neutral  { color: var(--muted); }
.pos-rec--negative { color: #b0341d; }
.pos-verdict__rec, .pos-card__rec {
  font-weight: 680; font-size: .84rem;
}

/* ----- Verdict block ----- */
.pos-verdict {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px 26px; background: var(--surface-2); margin: 0 0 28px;
}
.pos-verdict--negative { border-left: 4px solid #b0341d; }
.pos-verdict--positive { border-left: 4px solid var(--pos-native); }
.pos-verdict--neutral  { border-left: 4px solid var(--muted); }
.pos-verdict__title { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 12px; }
.pos-verdict__top { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 12px; }
.pos-verdict__line { font-size: 1.15rem; font-weight: 600; color: var(--ink); margin: 0 0 12px; }
.pos-verdict__disclosure {
  background: var(--pos-warn-bg); border: 1px solid var(--pos-warn-line);
  color: var(--pos-warn-ink); border-radius: var(--radius);
  padding: 10px 14px; font-size: .9rem; margin: 0 0 16px;
}
.pos-verdict__facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px 20px; margin: 0 0 16px; }
.pos-verdict__facts dt { font-size: .74rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.pos-verdict__facts dd { margin: 2px 0 0; font-weight: 600; color: var(--ink); font-size: .95rem; }
.pos-verdict__meta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-size: .85rem; color: var(--muted); }

/* ----- Confidence ----- */
.pos-conf { font-size: .84rem; color: var(--muted); }
.pos-conf__k { text-transform: uppercase; letter-spacing: .04em; font-size: .72rem; }
.pos-conf__v { font-weight: 640; color: var(--body); }
.pos-conf--high .pos-conf__v { color: #0f7a4d; }
.pos-conf--low .pos-conf__v { color: #b0341d; }

/* ----- Rating panel ----- */
.pos-ratings { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 8px 0 6px; }
.pos-ratings__head, .pos-ratings__row {
  display: grid; grid-template-columns: 2.2fr 1fr 3fr .9fr; gap: 14px;
  padding: 12px 16px; align-items: start;
}
.pos-ratings__head { background: var(--surface-3); font-size: .74rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.pos-ratings__row { border-top: 1px solid var(--line-soft); font-size: .92rem; }
.pos-ratings__dim-label { font-weight: 640; color: var(--ink); display: block; }
.pos-ratings__dim-desc { color: var(--muted); font-size: .82rem; display: block; margin-top: 2px; }
.pos-ratings__mm { color: var(--muted); font-size: .76rem; display: block; margin-top: 4px; font-style: italic; }
.pos-ratings__band { display: inline-flex; align-items: center; gap: 7px; font-weight: 640; }
.pos-ratings__band-dot { width: 10px; height: 10px; border-radius: 3px; background: var(--pos-band-unknown); flex: none; }
.pos-band--excellent .pos-ratings__band-dot { background: var(--pos-band-excellent); }
.pos-band--good .pos-ratings__band-dot { background: var(--pos-band-good); }
.pos-band--fair .pos-ratings__band-dot { background: var(--pos-band-fair); border-radius: 50%; }
.pos-band--poor .pos-ratings__band-dot { background: var(--pos-band-poor); transform: rotate(45deg); }
.pos-band--unknown .pos-ratings__band-dot { background: var(--pos-band-unknown); border-radius: 50%; opacity: .5; }
.pos-band--na .pos-ratings__band-dot { background: transparent; border: 1.5px dashed var(--pos-band-na); }
.pos-ratings__note { color: var(--body); }
.pos-ratings__conf { color: var(--muted); font-size: .86rem; }
.pos-ratings__foot { font-size: .85rem; color: var(--muted); margin: 8px 0 0; }

/* ----- Verification metadata ----- */
.pos-verify { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.pos-verify__headline { margin: 0 0 12px; font-weight: 600; }
.pos-verify__tag { display: inline-block; font-size: .74rem; font-weight: 640; padding: 2px 9px; border-radius: 999px; margin-left: 6px; }
.pos-verify__tag--tested { background: #e6f4ec; color: #0f7a4d; }
.pos-verify__tag--doc { background: var(--accent-tint); color: var(--accent-strong); }
.pos-verify__banner { background: var(--pos-warn-bg); border: 1px solid var(--pos-warn-line); color: var(--pos-warn-ink); border-radius: var(--radius); padding: 10px 14px; font-size: .9rem; }
.pos-verify__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 20px; margin: 12px 0; }
.pos-verify__item dt { font-size: .74rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.pos-verify__item dd { margin: 0; font-size: .9rem; color: var(--body); font-variant-numeric: tabular-nums; }
.pos-verify__state { font-size: .72rem; font-weight: 640; margin-left: 6px; }
.pos-verify__state.is-stale { color: #b0341d; }
.pos-verify__state.is-soon { color: var(--pos-warn-ink); }
.pos-verify__state.is-none { color: var(--muted); }
.pos-verify__foot, .pos-sources__empty { font-size: .85rem; color: var(--muted); }

/* ----- Sources ----- */
.pos-sources { list-style: none; padding: 0; margin: 0; }
.pos-sources__item { padding: 10px 0; border-top: 1px solid var(--line-soft); font-size: .9rem; }
.pos-sources__item:first-child { border-top: none; }
.pos-sources__title { font-weight: 600; display: block; }
.pos-sources__meta { color: var(--muted); font-size: .82rem; display: block; margin-top: 2px; }
.pos-sources__tested { color: #0f7a4d; font-weight: 640; }
.pos-sources__claim { color: var(--body); font-size: .84rem; display: block; margin-top: 2px; }

/* ----- Change log ----- */
.pos-changelog { list-style: none; padding: 0; margin: 0; }
.pos-changelog__item { display: flex; gap: 14px; padding: 6px 0; font-size: .88rem; border-top: 1px solid var(--line-soft); }
.pos-changelog__item:first-child { border-top: none; }
.pos-changelog__date { color: var(--muted); font-variant-numeric: tabular-nums; flex: none; width: 92px; }

/* ----- Hub ----- */
.pos-router { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 20px 0; }
.pos-router__btn {
  display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: var(--ink); font-weight: 600; text-decoration: none; text-align: center;
}
.pos-router__btn:hover { border-color: var(--accent); color: var(--accent-strong); }
.pos-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.pos-card { display: block; padding: 20px 22px; }
.pos-card__head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 10px; }
.pos-card__name { font-weight: 680; font-size: 1.1rem; color: var(--ink); }
.pos-card__verdict { color: var(--body); font-size: .92rem; margin: 0 0 12px; }
.pos-card__facts { display: grid; grid-template-columns: 1fr; gap: 6px; margin: 0 0 12px; }
.pos-card__facts div { display: flex; justify-content: space-between; gap: 12px; font-size: .84rem; }
.pos-card__facts dt { color: var(--muted); margin: 0; }
.pos-card__facts dd { margin: 0; font-weight: 600; color: var(--ink); text-align: right; }
.pos-card__foot { display: flex; flex-wrap: wrap; gap: 10px; font-size: .78rem; color: var(--muted); border-top: 1px solid var(--line-soft); padding-top: 10px; }

.pos-empty { border: 1px dashed var(--line); border-radius: var(--radius); padding: 24px; text-align: center; color: var(--muted); background: var(--surface-2); }

/* ----- Legend ----- */
.pos-legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.pos-legend__item { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.pos-legend__item h3 { font-size: .95rem; margin: 8px 0 4px; }
.pos-legend__item p { font-size: .85rem; color: var(--muted); margin: 0; }

/* ----- Diagram figure ----- */
.pos-figure { margin: 24px auto; max-width: 900px; }
.pos-figure svg { width: 100%; height: auto; display: block; }
.pos-figure figcaption { font-size: .85rem; color: var(--muted); margin-top: 10px; text-align: center; }

/* ----- Responsive: ratings + verdict collapse to stacked cards ----- */
@media (max-width: 720px) {
  .pos-ratings__head { display: none; }
  .pos-ratings__row { grid-template-columns: 1fr; gap: 4px; padding: 14px 16px; }
  .pos-ratings__band { margin-top: 4px; }
  .pos-verdict__facts { grid-template-columns: 1fr 1fr; }
  .pos-verify__grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .pos-router__btn, a.pos-badge, .pos-card { transition: none; }
}

/* ===== Phase 1: research status banner ===== */
.pos-status {
  border: 1px solid var(--line); border-left: 4px solid var(--accent);
  background: var(--accent-tint, #eef2ff); border-radius: 10px;
  padding: 20px 22px; margin: 8px 0 28px;
}
.pos-status__eyebrow { font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); font-weight: 700; margin: 0 0 6px; }
.pos-status__title { font-size: 1.12rem; line-height: 1.35; margin: 0 0 10px; }
.pos-status__body { font-size: .92rem; color: var(--body); margin: 0 0 10px; }
.pos-status__list { margin: 0 0 12px; padding-left: 20px; columns: 2; font-size: .9rem; }
.pos-status__list li { margin: 2px 0; }
.pos-status__meta { display: flex; flex-wrap: wrap; gap: 24px; margin: 12px 0 0; }
.pos-status__meta dt { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.pos-status__meta dd { margin: 2px 0 0; font-weight: 600; }
.pos-status__pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .82rem; font-weight: 700; }
.pos-status__pill--in-progress { background: #fff4e5; color: #9a5b00; }
.pos-status__pill--complete { background: #e6f4ec; color: #0f7a4d; }

/* ===== Phase 1: what we are still verifying ===== */
.pos-verifying { margin: 28px 0; }
.pos-verifying__list { display: grid; gap: 14px; }
.pos-verifying__item { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.pos-verifying__q { font-size: 1rem; margin: 0 0 8px; }
.pos-verifying__item p { font-size: .92rem; margin: 0 0 6px; }
.pos-verifying__meta { margin: 8px 0 0 !important; }

/* ===== Phase 1: CryptoLic Lab ===== */
.pos-lab { margin: 28px 0; }
.pos-lab__table { width: 100%; border-collapse: collapse; }
.pos-lab__table th, .pos-lab__table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: .92rem; vertical-align: top; }
.pos-lab__status { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 700; }
.pos-lab__status--verified { background: #e6f4ec; color: #0f7a4d; }
.pos-lab__status--pending { background: #fff4e5; color: #9a5b00; }
.pos-lab__status--nottested { background: #f1f1f3; color: var(--muted); }
.pos-lab__note { font-size: .85rem; color: var(--muted); margin-top: 4px; }

@media (max-width: 720px) {
  .pos-status__list { columns: 1; }
}

/* ===== Phase 1: platform spotlight (distinguishing capability) ===== */
.pos-spotlight { margin: 28px 0; padding: 20px 22px; border: 1px solid var(--line);
  border-left: 4px solid var(--accent); border-radius: 10px; background: var(--surface, #fafbfc); }
.pos-spotlight__lede { font-size: 1rem; color: var(--body); margin: 0 0 8px; }
.pos-spotlight__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 12px; }
.pos-spotlight__card { border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; background: #fff; }
.pos-spotlight__card h3 { font-size: .98rem; margin: 0 0 6px; }
.pos-spotlight__card p { font-size: .9rem; margin: 0; color: var(--body); }
@media (max-width: 720px) { .pos-spotlight__grid { grid-template-columns: 1fr; } }

/* ===== Phase 1 refinements: native-basis, comparison strip, verifying matrix ===== */
.pos-native-basis { font-size: .9rem; color: var(--body); background: var(--surface, #fafbfc);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin: 0 0 20px; }
.pos-compare { margin: 28px 0; }
.pos-verifying__matrix { margin: 8px 0 18px; }
.pos-verifying__matrix .pos-conf { font-weight: 700; }

/* ===== "What would it take to reach a higher level?" (reusable) ===== */
.pos-levelup { margin: 28px 0; padding: 4px 22px 8px; border: 1px dashed var(--line);
  border-radius: 10px; background: var(--surface, #fafbfc); }

/* ===== Merchant Decision Center ===== */
.dc-doors { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 20px 0 28px; }
.dc-door { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px;
  background: #fff; text-decoration: none; color: inherit; transition: border-color .15s, box-shadow .15s; }
.dc-door:hover { border-color: var(--accent); box-shadow: var(--shadow, 0 2px 10px rgba(0,0,0,.05)); }
.dc-door h3 { margin: 0 0 6px; font-size: 1.05rem; color: var(--accent); }
.dc-door p { margin: 0; font-size: .9rem; color: var(--body); }

/* comparison matrix cells (controlled states, never blank) */
.dc-matrix table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.dc-matrix th, .dc-matrix td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.dc-matrix thead th { background: var(--surface, #fafbfc); }
.dc-cell__state { display: block; font-weight: 700; font-size: .82rem; }
.dc-cell__detail { display: block; font-size: .8rem; color: var(--muted); margin-top: 2px; }
.dc-cell--verified .dc-cell__state { color: #0f7a4d; }
.dc-cell--doc .dc-cell__state { color: #1d4ed8; }
.dc-cell--unknown .dc-cell__state { color: #9a5b00; }
.dc-cell--na .dc-cell__state { color: var(--muted); }
.dc-cell--no .dc-cell__state { color: #c0392b; }
.dc-cell--pending .dc-cell__state { color: #7a5b00; }
.dc-legend { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; font-size: .8rem; }
.dc-legend__item { border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; }
.dc-legend__item .dc-cell__state { display: inline; }

/* decision trees */
.dc-trees { display: grid; gap: 14px; margin: 20px 0; }
.dc-tree { border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 10px; padding: 16px 18px; }
.dc-tree__q { margin: 0 0 8px; font-size: 1.02rem; }
.dc-tree__outcome { margin: 0 0 8px; font-size: .92rem; }
.dc-tree__go { margin: 0; font-weight: 600; }

/* lab roadmap */
.dc-lab-row { border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin: 12px 0; }
.dc-lab-row__head { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.dc-lab-row__head h3 { margin: 0; font-size: 1.05rem; flex: 1 1 auto; }
.dc-lab-badge { font-size: .78rem; font-weight: 700; padding: 2px 10px; border-radius: 999px; }
.dc-lab-badge--doc { background: #e6f4ec; color: #0f7a4d; }
.dc-lab-badge--lab { background: #fff4e5; color: #9a5b00; }
.dc-lab-row__label { font-size: .82rem; color: var(--muted); margin: 10px 0 4px; text-transform: uppercase; letter-spacing: .04em; }
.dc-lab-row__items { margin: 0; font-size: .88rem; }

@media (max-width: 720px) {
  .dc-doors { grid-template-columns: 1fr; }
  .dc-matrix { overflow-x: auto; }
}