/* ==========================================================================
   7. Rules — a clean accordion with icons (rules.js)
   ========================================================================== */

.rules {
  position: relative;
  padding: clamp(5.5rem, 14vh, 10rem) var(--pad);
  background:
    radial-gradient(50% 40% at 100% 30%, rgba(47, 143, 111, 0.12) 0%, transparent 100%),
    linear-gradient(180deg, #0f0906 0%, var(--night) 100%);
}

.rules__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  gap: clamp(2.5rem, 6vw, 6rem);
}

.rules__head h2 {
  margin: 1.3rem 0 1.4rem;
  font-size: clamp(2.2rem, 4.8vw, 3.9rem);
}

.rules__head > p {
  max-width: 30rem;
  color: var(--text-soft);
}

.rules__photo {
  display: none;
}

@media (min-width: 960px) {
  .rules__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .rules__head {
    position: sticky;
    top: calc(var(--nav-h) + 5vh);
  }

  .rules__photo {
    display: block;
    margin-top: 2.6rem;
    width: min(100%, 300px);
    border-radius: 999px 999px 14px 14px;
    overflow: hidden;
    border: 1px solid var(--line);
  }

  .rules__photo img {
    width: 100%;
    aspect-ratio: 3 / 3.9;
    object-fit: cover;
    object-position: 50% 60%;
  }
}

@media (min-width: 960px) and (max-height: 820px) {
  .rules__photo {
    display: none;
  }
}

/* ---------- accordion ---------- */

.rules__list {
  border-top: 1px solid var(--line);
}

.rule {
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 0.4s;
}

.rule.is-open {
  border-bottom-color: var(--line);
}

.rule__btn {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(0.9rem, 2.4vw, 1.5rem);
  padding: clamp(1.1rem, 2.6vh, 1.5rem) 0;
  text-align: left;
  -webkit-tap-highlight-color: transparent;
}

.rule__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--gold);
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: color 0.45s var(--ease-out), background-color 0.45s var(--ease-out), border-color 0.45s var(--ease-out), transform 0.6s var(--ease-out);
}

.rule.is-open .rule__icon {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
  transform: rotate(-8deg);
}

.rule__label {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  min-width: 0;
}

.rule__no {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--text-faint);
}

.rule__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.25rem, 3.4vw, 1.72rem);
  letter-spacing: -0.015em;
  line-height: 1.2;
  transition: color 0.35s;
}

.rule.is-open .rule__title {
  color: var(--gold-light);
}

.rule__chev {
  position: relative;
  width: 34px;
  height: 34px;
  color: var(--text-soft);
  transition: transform 0.6s var(--ease-out), color 0.3s;
}

.rule__chev::before,
.rule__chev::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 15px;
  height: 1.5px;
  margin: -0.75px 0 0 -7.5px;
  background: currentColor;
  transition: transform 0.6s var(--ease-out);
}

.rule__chev::after {
  transform: rotate(90deg);
}

.rule.is-open .rule__chev {
  color: var(--gold);
  transform: rotate(180deg);
}

.rule.is-open .rule__chev::after {
  transform: rotate(0deg);
}

@media (hover: hover) {
  .rule__btn:hover .rule__title {
    color: var(--gold-light);
  }
}

/* height animates with the grid-rows trick, no JS measuring */
.rule__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.65s var(--ease-out);
}

.rule.is-open .rule__panel {
  grid-template-rows: 1fr;
}

.rule__panel > div {
  overflow: hidden;
}

.rule__panel p {
  max-width: 40rem;
  padding: 0 0 clamp(1.3rem, 3vh, 1.8rem) calc(46px + clamp(0.9rem, 2.4vw, 1.5rem));
  color: var(--text-soft);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s var(--ease-out), transform 0.6s var(--ease-out);
}

.rule.is-open .rule__panel p {
  opacity: 1;
  transform: none;
  transition-delay: 0.12s;
}

@media (max-width: 520px) {
  .rule__panel p {
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rule__panel,
  .rule__panel p,
  .rule__icon,
  .rule__chev,
  .rule__chev::after {
    transition: none;
  }
}