/* ══════════════════════════════════════════════════════════
   scroll-nav.css  –  Floating icons + centre line only
   No card background · icons on a thin vertical gold line
   ══════════════════════════════════════════════════════════ */

:root {
  --sn-item-h: 60px;
  --sn-show:   4;
  --sn-card-w: 54px;
  --sn-hl-h:   50px;
  --sn-vp-h:   calc(var(--sn-item-h) * var(--sn-show));
}

/* ── Fixed wrapper ──────────────────────────────────────── */
#scroll-nav {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4000;
  pointer-events: none;
}

body.locked #scroll-nav { display: none; }

/* ── Card — transparent positioning shell only ──────────── */
.sn-card {
  position: relative;
  width: var(--sn-card-w);
  height: var(--sn-vp-h);
  pointer-events: auto;
}

/* ── Thin vertical line (rail) through icon centres ─────── */
.sn-rail {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top:    calc(var(--sn-item-h) / 2);   /* start at first dot centre  */
  bottom: calc(var(--sn-item-h) / 2);   /* end   at last dot centre   */
  width: 1.5px;
  background: rgba(201,164,71,.22);
  border-radius: 2px;
  pointer-events: none;
  z-index: 0;
}

/* ── Gold fill (scroll progress) ────────────────────────── */
.sn-fill {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top:   calc(var(--sn-item-h) / 2);
  width: 1.5px;
  height: 0%;
  background: linear-gradient(to bottom,
    #8B6914, #C9A447, #F5D78E, #C9A447);
  border-radius: 2px;
  pointer-events: none;
  z-index: 1;
  transition: height .1s linear;
}

/* ── Viewport — slot-machine clip ───────────────────────── */
.sn-viewport {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 2;
}

.sn-track {
  position: absolute;
  top: 0; left: 0; right: 0;
  transition: transform .38s cubic-bezier(.4,0,.2,1);
  will-change: transform;
}

/* ── Dot (48 × 60 touch target) ─────────────────────────── */
.sn-dot {
  width: var(--sn-card-w);
  height: var(--sn-item-h);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: opacity .3s ease;
  pointer-events: auto;
}

.sn-dot          { opacity: .35; }
.sn-dot.d-1      { opacity: .65; }
.sn-dot.sn-active{ opacity: 1;   }

/* ── Icon circle ─────────────────────────────────────────── */
.sn-dot-inner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(42,8,69,.82);      /* dark fill breaks the rail line cleanly */
  border: 1.5px solid rgba(201,164,71,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .3s, box-shadow .3s, transform .3s, background .3s;
  transform: scale(.8);
  position: relative;
  z-index: 1;
}

.sn-dot.d-1 .sn-dot-inner {
  border-color: rgba(201,164,71,.58);
  transform: scale(.9);
}

.sn-dot.sn-active .sn-dot-inner {
  background: rgba(42,8,69,.95);
  border-color: #C9A447;
  transform: scale(1);
  box-shadow:
    0 0 0 3px rgba(201,164,71,.15),
    0 0 16px rgba(201,164,71,.5);
}

/* ── SVG icon ────────────────────────────────────────────── */
.sn-dot svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: rgba(245,215,142,.6);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  pointer-events: none;
  transition: stroke .3s, filter .3s;
}

.sn-dot.d-1 svg       { stroke: rgba(245,215,142,.82); }
.sn-dot.sn-active svg {
  stroke: #C9A447;
  filter: drop-shadow(0 0 4px rgba(201,164,71,.7));
}

/* ── Section label — tiny italic text between active & next */
.sn-label {
  position: absolute;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--ff-serif);
  font-style: italic;
  font-size: .58rem;
  letter-spacing: .05em;
  color: rgba(245,215,142,.75);
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 4px;
  z-index: 5;
  transition: top .38s cubic-bezier(.4,0,.2,1);
}

/* ── Tooltip (desktop hover only) ───────────────────────── */
.sn-tip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: rgba(30,5,55,.95);
  border: 1px solid rgba(201,164,71,.45);
  color: #F5D78E;
  font-family: var(--ff-serif);
  font-style: italic;
  font-size: .8rem;
  padding: .25rem .75rem;
  border-radius: 8px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
  z-index: 20;
  box-shadow: 0 4px 14px rgba(0,0,0,.55);
}

@media (hover: hover) {
  .sn-dot:hover .sn-tip {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

/* ── Focus ring ──────────────────────────────────────────── */
.sn-dot:focus-visible { outline: none; }
.sn-dot:focus-visible .sn-dot-inner {
  border-color: #C9A447;
  box-shadow: 0 0 0 3px rgba(201,164,71,.4);
}

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 600px) { #scroll-nav { right: 6px; } }
@media (max-height: 480px){ #scroll-nav { display: none; } }