/* =============================================================================
   ShiftHawk — Rule Book + Swap Ranking interactive component
   Self-contained, dependency-free. Mounts into #rulebook-mount.
   All classes prefixed .rb-  ·  uses design tokens from styles.css.
   ========================================================================== */

.rb {
  --rb-row-gap: var(--s-3);
  font-family: var(--font-body);
  color: var(--text-1);
  max-width: 540px;
  width: 100%;
  margin: 0 auto;
}

/* ---------------- Segmented toggle ---------------- */
.rb-seg {
  display: inline-flex;
  width: 100%;
  gap: 4px;
  padding: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  margin-bottom: var(--s-5);
  position: relative;
}
.rb-seg-btn {
  flex: 1 1 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  min-height: 44px;
  padding: 0 var(--s-4);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  color: var(--text-2);
  background: transparent;
  border: none;
  border-radius: var(--r-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease;
}
.rb-seg-btn .ph { font-size: 1.2rem; line-height: 1; }
.rb-seg-btn:hover { color: var(--text-1); }
.rb-seg-btn[aria-selected="true"] {
  color: var(--primary-deep);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.rb-seg-btn:focus-visible {
  outline: 2.5px solid var(--primary);
  outline-offset: 2px;
}

/* ---------------- Panels (cross-fade) ---------------- */
.rb-panels { position: relative; }
.rb-panel { display: none; }
.rb-panel.is-active { display: block; animation: rb-fade .3s ease both; }
@keyframes rb-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.rb-intro {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text-2);
  margin: 0 0 var(--s-4);
}
.rb-intro strong { color: var(--text-1); }

.rb-list { display: grid; gap: var(--rb-row-gap); margin: 0; padding: 0; list-style: none; }

/* ---------------- Rule book rows (expandable guarantees) ---------------- */
.rb-rule {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.rb-rule.is-open {
  border-color: var(--primary-tint);
  box-shadow: var(--shadow-md);
}
.rb-rule-head {
  width: 100%;
  display: grid;
  grid-template-columns: 28px 1fr 20px;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-4);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-display);
  color: var(--text-1);
}
.rb-rule-head:focus-visible {
  outline: 2.5px solid var(--primary);
  outline-offset: -3px;
  border-radius: var(--r-3);
}
.rb-rule-icon { color: var(--success); font-size: 1.5rem; line-height: 1; }
.rb-rule-title { font-weight: 700; font-size: 1rem; line-height: 1.3; }
.rb-rule-chev {
  color: var(--text-3);
  font-size: 1.1rem;
  line-height: 1;
  transition: transform .25s ease;
  justify-self: end;
}
.rb-rule.is-open .rb-rule-chev { transform: rotate(180deg); color: var(--primary); }

/* collapsible body: animate grid-template-rows 0fr -> 1fr + opacity */
.rb-rule-body {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows .28s ease, opacity .28s ease;
}
.rb-rule.is-open .rb-rule-body {
  grid-template-rows: 1fr;
  opacity: 1;
}
.rb-rule-body-inner { overflow: hidden; }
.rb-rule-text {
  margin: 0;
  padding: 0 var(--s-4) var(--s-4) calc(28px + var(--s-3) + var(--s-4));
  font-size: .95rem;
  line-height: 1.55;
  color: var(--text-2);
}

/* ---------------- Ranking rows (tunable scoreboard) ---------------- */
.rb-rank {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-sm);
  padding: var(--s-4);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-2) var(--s-3);
  align-items: start;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.rb-rank:hover {
  border-color: var(--primary-tint);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.rb-rank-title {
  grid-column: 1;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.3;
  color: var(--text-1);
}
.rb-rank-text {
  grid-column: 1 / -1;
  margin: 0;
  font-size: .95rem;
  line-height: 1.55;
  color: var(--text-2);
}

/* tier tag + weight dots cluster, top-right */
.rb-rank-meta {
  grid-column: 2;
  grid-row: 1;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  white-space: nowrap;
}
.rb-tier {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .02em;
  padding: 4px 9px;
  border-radius: var(--r-pill);
  border: 1px solid;
}
.rb-tier-1 { background: var(--primary-soft); color: var(--primary-deep); border-color: var(--primary-tint); }
.rb-tier-2 { background: #FFFBEB; color: #B45309; border-color: #FDE68A; }
.rb-tier-3 { background: #F5F3FF; color: #6D28D9; border-color: #DDD6FE; }

/* ---- Dark mode: tier tags hardcode light pastels — flip to translucent tints ---- */
html[data-theme="dark"] .rb-tier-2 { background: rgba(245,158,11,.16); color: #FCD34D; border-color: rgba(245,158,11,.4); }
html[data-theme="dark"] .rb-tier-3 { background: rgba(139,92,246,.18); color: #C4B5FD; border-color: rgba(139,92,246,.42); }

/* 3-dot weight indicator */
.rb-dots { display: inline-flex; gap: 4px; align-items: center; }
.rb-dots .rb-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--border-strong);
  display: inline-block;
}
.rb-rank--t1 .rb-dots .rb-dot:nth-child(-n+3) { background: var(--primary); }
.rb-rank--t2 .rb-dots .rb-dot:nth-child(-n+2) { background: var(--amber); }
.rb-rank--t3 .rb-dots .rb-dot:nth-child(-n+1) { background: var(--lilac); }

/* ---------------- Footer notes ---------------- */
.rb-foot {
  display: flex;
  align-items: flex-start;
  gap: var(--s-2);
  margin: var(--s-4) 0 0;
  padding: var(--s-3) var(--s-4);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  font-size: .85rem;
  line-height: 1.5;
  color: var(--text-2);
}
.rb-foot .ph { color: var(--primary); font-size: 1.05rem; line-height: 1.4; flex: none; }

/* ---------------- Ledger panel (Reciprocity Ledger card) ----------------
   Mirrors the app's LedgerSheet: avatar initials, name + swap history,
   a "who owes who" balance chip, generosity % in mono. The featured row's
   chip crossfades when Karma / Gift is picked in the component on the left.
   data-mode on the panel: neutral | karma | gift  ·  .is-play replays. */
.rb-ledger {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-3);
  box-shadow: var(--shadow-md);
  padding: var(--s-4);
  overflow: hidden;
}
.rb-ledger-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  margin-bottom: var(--s-3);
  padding-bottom: var(--s-3);
  border-bottom: 1px dashed var(--border-strong);
}
.rb-ledger-cap {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--text-3);
}
.rb-ledger-scales { color: var(--primary); font-size: 1.4rem; line-height: 1; }
.is-play[data-mode="karma"] .rb-ledger-scales { animation: rb-scales-settle 1.2s ease 1.1s both; }
.is-play[data-mode="gift"] .rb-ledger-scales { animation: rb-scales-nudge 1.2s ease 1.1s both; }
@keyframes rb-scales-settle {
  0%   { transform: rotate(-14deg); }
  55%  { transform: rotate(5deg); }
  100% { transform: rotate(0deg); }
}
@keyframes rb-scales-nudge {
  0%   { transform: rotate(0deg); }
  45%  { transform: rotate(12deg); }
  100% { transform: rotate(8deg); }
}

.rb-ledger-rows { display: grid; gap: var(--s-2); margin: 0; padding: 0; list-style: none; }
.rb-led-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto auto;
  gap: var(--s-3);
  align-items: center;
  padding: var(--s-3);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: var(--surface-2);
}
.is-play .rb-led-row { animation: rb-led-in .45s ease both; animation-delay: calc(var(--i) * 110ms); }
@keyframes rb-led-in {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: none; }
}
.rb-led-row--feat { background: var(--surface); }
.is-play[data-mode="karma"] .rb-led-row--feat { animation: rb-led-in .45s ease both, rb-feat-glow-karma 1.6s ease 1.1s; }
.is-play[data-mode="gift"]  .rb-led-row--feat { animation: rb-led-in .45s ease both, rb-feat-glow-gift 1.6s ease 1.1s; }
@keyframes rb-feat-glow-karma {
  0%, 100% { border-color: var(--border); box-shadow: none; }
  35% { border-color: #F9A8D4; box-shadow: 0 0 0 4px rgba(236, 72, 153, .14); }
}
@keyframes rb-feat-glow-gift {
  0%, 100% { border-color: var(--border); box-shadow: none; }
  35% { border-color: #6EE7B7; box-shadow: 0 0 0 4px rgba(16, 185, 129, .16); }
}

.rb-led-ava {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 700; font-size: .82rem;
  background: var(--primary-soft); color: var(--primary-deep);
  border: 1px solid var(--primary-tint);
}
.rb-led-who { display: grid; gap: 2px; min-width: 0; }
.rb-led-name { font-family: var(--font-display); font-weight: 700; font-size: .95rem; color: var(--text-1); }
.rb-led-sub { font-size: .78rem; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* balance chips — featured row stacks before/after in the same grid cell */
.rb-led-bal { display: grid; justify-items: end; align-items: center; }
.rb-led-chip {
  grid-area: 1 / 1;
  font-family: var(--font-mono); font-size: .7rem; font-weight: 600;
  letter-spacing: .02em; white-space: nowrap;
  padding: 4px 10px; border-radius: var(--r-pill); border: 1px solid;
}
.rb-led-chip.is-owesyou { background: #FDF2F8; color: #BE185D; border-color: #FBCFE8; }
.rb-led-chip.is-even    { background: #ECFDF5; color: #047857; border-color: #A7F3D0; }
.rb-led-chip.is-youowe  { background: #FFFBEB; color: #B45309; border-color: #FDE68A; }
html[data-theme="dark"] .rb-led-chip.is-owesyou { background: rgba(236,72,153,.16); color: #F9A8D4; border-color: rgba(236,72,153,.4); }
html[data-theme="dark"] .rb-led-chip.is-even    { background: rgba(16,185,129,.16);  color: #6EE7B7; border-color: rgba(16,185,129,.4); }
html[data-theme="dark"] .rb-led-chip.is-youowe  { background: rgba(245,158,11,.16);  color: #FCD34D; border-color: rgba(245,158,11,.4); }

/* the crossfade: before fades out, after pops in (karma / gift only) */
.rb-led-chip--after { opacity: 0; transform: scale(.7); }
.is-play[data-mode="karma"] .rb-led-chip--before,
.is-play[data-mode="gift"]  .rb-led-chip--before { animation: rb-chip-out .35s ease 1.2s both; }
.is-play[data-mode="karma"] .rb-led-chip--after,
.is-play[data-mode="gift"]  .rb-led-chip--after { animation: rb-chip-in .5s cubic-bezier(.34, 1.56, .64, 1) 1.45s both; }
@keyframes rb-chip-out {
  from { opacity: 1; transform: none; }
  to   { opacity: 0; transform: scale(.7) translateY(-6px); }
}
@keyframes rb-chip-in {
  from { opacity: 0; transform: scale(.7) translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.rb-led-score { display: grid; justify-items: end; gap: 1px; }
.rb-led-pct {
  font-family: var(--font-mono); font-weight: 800; font-size: 1.05rem;
  color: var(--primary-deep); font-variant-numeric: tabular-nums;
}
.rb-led-pct-label { font-size: .62rem; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); }

/* stamp — the bookkeeping result, pops in after the chip flip */
.rb-ledger-stamp {
  display: flex; align-items: center; justify-content: center; gap: var(--s-2);
  /* height always reserved so the card doesn't jump when the stamp lands */
  min-height: 30px; margin-top: var(--s-3);
  font-family: var(--font-display); font-weight: 700; font-size: .9rem;
  opacity: 0;
}
.rb-ledger-stamp .ph { font-size: 1.2rem; line-height: 1; }
[data-mode="karma"] .rb-ledger-stamp { color: #BE185D; }
[data-mode="gift"]  .rb-ledger-stamp { color: #047857; }
html[data-theme="dark"] [data-mode="karma"] .rb-ledger-stamp { color: #F9A8D4; }
html[data-theme="dark"] [data-mode="gift"]  .rb-ledger-stamp { color: #6EE7B7; }
.is-play[data-mode="karma"] .rb-ledger-stamp,
.is-play[data-mode="gift"]  .rb-ledger-stamp { animation: rb-stamp-in .5s cubic-bezier(.34, 1.56, .64, 1) 1.9s both; }
@keyframes rb-stamp-in {
  from { opacity: 0; transform: scale(.85) translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------------- Responsive ---------------- */
@media (max-width: 560px) {
  .rb { max-width: 100%; }
  .rb-rank { grid-template-columns: 1fr; }
  .rb-rank-meta { grid-column: 1; grid-row: auto; }
}
@media (max-width: 480px) {
  .rb-seg-btn { font-size: .82rem; padding: 0 var(--s-2); gap: 5px; }
  .rb-seg-btn .ph { font-size: 1rem; }
  .rb-led-last { display: none; } /* keep rows on one line on small phones */
  .rb-led-row { grid-template-columns: 34px minmax(0, 1fr) auto auto; gap: var(--s-2); }
  .rb-led-ava { width: 34px; height: 34px; font-size: .72rem; }
}

/* ---------------- Reduced motion ---------------- */
@media (prefers-reduced-motion: reduce) {
  .rb-panel.is-active { animation: none; }
  .rb-rule-body { transition: none; }
  .rb-rule-chev { transition: none; }
  .rb-rank { transition: none; }
  .rb-rank:hover { transform: none; }
  /* ledger: no motion — jump straight to the final bookkeeping state */
  .is-play .rb-led-row,
  .is-play[data-mode="karma"] .rb-led-row--feat,
  .is-play[data-mode="gift"] .rb-led-row--feat,
  .is-play[data-mode="karma"] .rb-ledger-scales,
  .is-play[data-mode="gift"] .rb-ledger-scales,
  .is-play[data-mode="karma"] .rb-led-chip--before,
  .is-play[data-mode="gift"] .rb-led-chip--before,
  .is-play[data-mode="karma"] .rb-led-chip--after,
  .is-play[data-mode="gift"] .rb-led-chip--after,
  .is-play[data-mode="karma"] .rb-ledger-stamp,
  .is-play[data-mode="gift"] .rb-ledger-stamp { animation: none; }
  [data-mode="karma"] .rb-led-chip--before,
  [data-mode="gift"]  .rb-led-chip--before { opacity: 0; }
  [data-mode="karma"] .rb-led-chip--after,
  [data-mode="gift"]  .rb-led-chip--after { opacity: 1; transform: none; }
  [data-mode="karma"] .rb-ledger-stamp,
  [data-mode="gift"]  .rb-ledger-stamp { opacity: 1; }
}