/* /rules only — loaded after site.css. Chapters as glass cards in two
   columns, a jump list on top. */

.rules-page {
  padding: calc(var(--nav-h) + clamp(3rem, 9vw, 6rem)) 0 var(--section-y);
  background: linear-gradient(180deg, rgba(10, 14, 11, 0.55) 0, var(--bg-veil) 24rem);
}

/* ---------- header ---------- */
.rules-head { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(1.5rem, 5vw, 4.5rem); align-items: end; }
.rules-head h1 { font-size: clamp(3rem, 8vw, 6rem); font-weight: 800; line-height: 0.95; letter-spacing: -0.04em; }
.rules-intro p { font-size: clamp(1.05rem, 1.5vw, 1.2rem); color: var(--text); }
.rules-intro strong { color: var(--heading); }
.rules-intro .rules-meta { margin-top: 0.9rem; font-size: 0.85rem; color: var(--subtle); }
@media (max-width: 860px) { .rules-head { grid-template-columns: 1fr; } }

/* ---------- jump list ---------- */
.rules-toc { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-block: clamp(2.25rem, 5vw, 3.5rem) clamp(1.5rem, 3vw, 2rem); }
.rules-toc a {
  padding: 0.45rem 0.85rem; border: 1px solid var(--line-strong); border-radius: 99px;
  font-size: 0.85rem; color: var(--text); background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.15s, color 0.15s, background-color 0.15s;
}
.rules-toc a:hover { border-color: var(--primary); color: var(--primary-hi); background: var(--primary-tint); }

/* ---------- chapters ---------- */
.rules-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; counter-reset: chapter; }
/* Same block as the value cards on /about: plain glass, a small green
   chapter number, then the title. */
.rule-card { padding: clamp(1.4rem, 2.6vw, 1.9rem); counter-increment: chapter; scroll-margin-top: calc(var(--nav-h) + 1rem); }
.rule-card::before { content: counter(chapter, decimal-leading-zero); display: block; margin-bottom: 0.6rem; font: 800 0.95rem/1 var(--font-display); color: var(--primary-hi); font-variant-numeric: tabular-nums; }
.rule-card.is-wide { grid-column: 1 / -1; }
.rule-card h2 { margin-bottom: 1rem; font-size: clamp(1.25rem, 2vw, 1.5rem); font-weight: 800; letter-spacing: -0.01em; }

.rule-body { color: var(--text); line-height: 1.65; }
.rule-body > * + * { margin-top: 0.9rem; }
.rule-body h3 { margin-top: 1.5rem; font: 600 0.78rem/1 var(--font-body); letter-spacing: 0.14em; text-transform: uppercase; color: var(--primary-hi); }
.rule-body h3:first-child { margin-top: 0; }
.rule-body ul { display: grid; gap: 0.55rem; align-content: start; }
.rule-body li { position: relative; padding-left: 1.25rem; }
.rule-body li::before { content: ""; position: absolute; left: 0; top: 0.68em; width: 6px; height: 6px; border-radius: 50%; background: var(--primary-hi); }
.rule-body strong { color: var(--heading); }
.rule-body a { color: var(--primary-hi); text-decoration: underline; text-underline-offset: 3px; }
.rule-body code { padding: 0.1em 0.4em; border-radius: 4px; background: rgba(255, 255, 255, 0.07); font-size: 0.9em; }

/* Chat: global and group/local side by side, the TL;DR across both. Other
   wide chapters split their list into two columns. */
@media (min-width: 900px) {
  .rule-card.is-wide:not(#chat) .rule-body ul { display: block; columns: 2; column-gap: 2.5rem; }
  .rule-card.is-wide:not(#chat) .rule-body li { break-inside: avoid; margin-bottom: 0.55rem; }
  #chat .rule-body { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.9rem 2.5rem; }
  #chat .rule-body > * + * { margin-top: 0; }
  #chat .rule-body > :nth-child(1) { grid-area: 1 / 1; }
  #chat .rule-body > :nth-child(2) { grid-area: 2 / 1; }
  #chat .rule-body > :nth-child(3) { grid-area: 1 / 2; }
  #chat .rule-body > :nth-child(4) { grid-area: 2 / 2; }
  #chat .rule-body > p:last-child { grid-area: 3 / 1 / 4 / -1; margin-top: 0.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
}

@media (max-width: 860px) {
  .rules-grid { grid-template-columns: 1fr; }
}

.rules-foot { margin-top: 2rem; color: var(--muted); text-align: center; }
.rules-foot a { color: var(--primary-hi); text-decoration: underline; text-underline-offset: 3px; }