/* =========================
   AVAILABLE UPGRADES — responsive (same pattern as before)
   File: cruising_navigator/6_available_upgrades/available_upgrades.css
========================= */

.available_upgrades{
  --cs-ink:#0f2140;
  --cs-muted:#5f6b7a;
  --au-line: rgba(15,33,64,.55);

  /* Pattern: fluid spacing + safe gutters */
  --au-container: 72rem;               /* ~1152px */
  --au-gutter: clamp(1rem, 4vw, 3rem);
  --au-py: clamp(2.75rem, 6vw, 5rem);

  position: relative;
  padding-block: var(--au-py);
  padding-inline: var(--au-gutter);
  background: #F8F8FA;
}

.au-wrap{
  width: min(100%, 61.25rem); /* 980px */
  margin-inline: auto;
}

/* Header */
.au-header{
  text-align: center;
}

.au-tagline{
  margin: 0 0 18px 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cs-muted);
}

/* Section title format (as requested) */
.au-title{
  margin: 0;

  font-size: clamp(3rem, 4.5vw, 6rem);
  font-weight: 600;
  line-height: 1.12;

  color: var(--cs-ink);
  max-width: 26ch;
  padding-inline: clamp(0rem, 1.2vw, .5rem);

  margin-inline: auto;
}

.au-subtitle{
  margin: clamp(.9rem, 2.2vw, 1.35rem) auto 0;
  font-size: clamp(1.02rem, 1.8vw, 1.35rem);
  line-height: 1.65;
  color: var(--cs-muted);
  max-width: 78ch;
  padding-inline: clamp(0rem, 1.2vw, .5rem);
}

/* List */
.au-list{
  margin-top: clamp(1.8rem, 4.5vw, 4rem);
}

.au-row{
  display: grid;
  grid-template-columns: clamp(64px, 10vw, 90px) 1fr;
  gap: clamp(1rem, 2.6vw, 26px);
  align-items: start;
  padding-block: clamp(1.1rem, 2.6vw, 1.75rem);
}

.au-num{
  font-size: clamp(2.1rem, 6vw, 3.2rem);
  font-weight: 800;
  line-height: 1;
  color: #202E52;
}

.au-row-title{
  margin: 0;
  font-size: clamp(1.25rem, 2.2vw, 2.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: #0b0b0b;
  max-width: 40ch;
}

.au-row-text{
  margin: clamp(.55rem, 1.4vw, .75rem) 0 0;
  font-size: clamp(1rem, 1.6vw, 1.05rem);
  line-height: 1.7;
  color: #0b0b0b;
  max-width: 72ch;
}

.au-divider{
  border: 0;
  height: 1px;
  background: var(--au-line);
  margin: 0;
}

/* =========================
   Responsive
========================= */

/* Small phones */
@media (max-width: 360px){
  .available_upgrades{
    padding-inline: 1rem;
  }
  .au-title{
    max-width: 20ch;
  }
}

/* Collapse to single column number + text for narrow screens */
@media (max-width: 520px){
  .au-row{
    grid-template-columns: 1fr;
    gap: .6rem;
  }
  .au-num{
    font-size: 2.25rem;
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  .available_upgrades *{
    transition: none !important;
    animation: none !important;
  }
}

/* =========================
   Reveal only (adds ONLY what’s needed)
   - data-sr-reveal on section
   - .sr-item on items to animate
   - .is-revealed toggled by JS (once)
   - delays via --sr-delay
========================= */
.available_upgrades[data-sr-reveal] .sr-item{
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 700ms cubic-bezier(.2,.7,.2,1),
    transform 700ms cubic-bezier(.2,.7,.2,1);
  transition-delay: var(--sr-delay, 0ms);
  will-change: opacity, transform;
}

.available_upgrades[data-sr-reveal] .sr-item.is-revealed{
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce){
  .available_upgrades[data-sr-reveal] .sr-item{
    opacity: 1;
    transform: none;
    transition: none;
    transition-delay: 0ms;
  }
}