/* ============================================================
   THE LANTERN FOUNDATION · enhance.css
   Interactive & dynamic visual layer (loaded after shared.css)
   ============================================================ */

/* ---- SCROLL PROGRESS BAR ---- */
.scroll-progress {
  position: fixed;
  inset-block-start: 0; inset-inline-start: 0;
  height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--gold-pale));
  z-index: 250; pointer-events: none;
  transition: width .08s linear;
  box-shadow: 0 0 12px rgba(232,164,32,.5);
}

/* ---- CURSOR-FOLLOW CARD GLOW ---- */
[data-glow] { position: relative; isolation: isolate; }
[data-glow]::after {
  content: ''; position: absolute; inset: 0; z-index: 0;
  pointer-events: none; opacity: 0; transition: opacity .35s;
  background: radial-gradient(320px circle at var(--mx,50%) var(--my,50%),
              rgba(232,164,32,.13), transparent 65%);
}
[data-glow]:hover::after { opacity: 1; }
[data-glow] > * { position: relative; z-index: 1; }

/* ---- MAGNETIC / LIFT BUTTONS ---- */
.btn[data-magnetic] { will-change: transform; }

/* ---- IMPACT BAND (full-bleed image strip) ---- */
.impact-band {
  position: relative; overflow: hidden;
  min-height: clamp(340px, 52vw, 560px);
  display: flex; align-items: flex-end;
  padding: 0;
}
.impact-band image-slot {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0;
}
.impact-band .impact-overlay {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, rgba(11,10,8,.30) 0%, rgba(11,10,8,.10) 40%, rgba(11,10,8,.92) 100%);
}
.impact-band .impact-content {
  position: relative; z-index: 2;
  max-width: var(--container); margin-inline: auto; width: 100%;
  padding: var(--gap); padding-block-end: clamp(2.5rem, 5vw, 4rem);
}
.impact-band .impact-content h2 {
  font-family: var(--font-serif); font-weight: 700; color: var(--cream);
  font-size: clamp(1.8rem, 4vw, 3.4rem); line-height: 1.1; max-width: 18ch;
  text-shadow: 0 2px 30px rgba(0,0,0,.5);
}
.impact-band .impact-content p {
  color: var(--text-light); font-size: clamp(.95rem,1.5vw,1.1rem);
  max-width: 46ch; margin-top: 1rem; text-shadow: 0 2px 20px rgba(0,0,0,.6);
}

/* ---- BRANCH CARD IMAGE TOP ---- */
.branch-card-img {
  aspect-ratio: 16/10; position: relative; overflow: hidden;
  margin: calc(-1 * clamp(2rem,4vw,3rem)) calc(-1 * clamp(2rem,4vw,3rem)) .4rem;
}
.branch-card-img image-slot { position: absolute; inset: 0; width: 100%; height: 100%; }

/* ---- MARQUEE TICKER ---- */
.marquee {
  background: var(--gold-bright); color: var(--dark);
  overflow: hidden; padding-block: .9rem; position: relative;
  border-block: 1px solid var(--gold);
}
.marquee-track {
  display: flex; gap: 0; width: max-content;
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--font-serif); font-size: clamp(1rem,1.6vw,1.35rem);
  font-weight: 700; font-style: italic; white-space: nowrap;
  padding-inline: 1.6rem; display: inline-flex; align-items: center;
}
.marquee-track span::after {
  content: '✦'; font-style: normal; font-size: .7em;
  margin-inline-start: 3.2rem; opacity: .55;
}
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---- CHAPTER / PHASE STICKY NAV (About) ---- */
.chapter-nav {
  position: sticky; top: var(--nav-h); z-index: 100;
  background: rgba(11,10,8,.97); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dark-3);
}
.chapter-nav-inner {
  display: flex; gap: 0; max-width: var(--container);
  margin-inline: auto; padding-inline: var(--gap); overflow-x: auto;
}
.chapter-nav a {
  display: flex; align-items: center; gap: .6rem;
  font-size: .78rem; font-weight: 600; letter-spacing: .06em;
  color: var(--text-muted); text-decoration: none; padding: 1.05rem 1.4rem;
  border-bottom: 2px solid transparent; white-space: nowrap;
  transition: color .2s, border-color .2s;
}
.chapter-nav a b {
  font-family: var(--font-serif); font-size: .95rem; color: var(--gold);
  transition: color .2s;
}
.chapter-nav a:hover { color: var(--cream); }
.chapter-nav a.active { color: var(--gold-bright); border-bottom-color: var(--gold-bright); }
.chapter-nav a.active b { color: var(--gold-bright); }

/* ---- LANTERN CANVAS (reusable bg) ---- */
.lantern-host { position: relative; }
.lantern-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.lantern-host > .wrap, .lantern-host > .impact-content { position: relative; z-index: 2; }

/* ---- GALLERY EXPAND / LIGHTBOX TRIGGER ---- */
.lb-wrap { position: relative; }
.lb-btn {
  position: absolute; top: .55rem; right: .55rem; z-index: 5;
  width: 32px; height: 32px; border: none; cursor: pointer;
  background: rgba(11,10,8,.72); color: var(--gold-bright);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: scale(.85); transition: opacity .2s, transform .2s, background .2s;
  backdrop-filter: blur(4px);
}
.lb-wrap:hover .lb-btn { opacity: 1; transform: scale(1); }
.lb-btn:hover { background: var(--gold-bright); color: var(--dark); }
/* hide when the slot has no image yet */
.lb-wrap image-slot:not([data-filled]) ~ .lb-btn { display: none; }

/* ---- LIGHTBOX OVERLAY ---- */
.lightbox {
  position: fixed; inset: 0; z-index: 500;
  display: flex; align-items: center; justify-content: center;
  background: rgba(8,7,5,.94); backdrop-filter: blur(8px);
  opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
  padding: clamp(1.5rem, 5vw, 4rem);
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: 100%; max-height: 100%; object-fit: contain;
  box-shadow: 0 30px 90px rgba(0,0,0,.6);
  transform: scale(.96); transition: transform .3s;
}
.lightbox.open img { transform: scale(1); }
.lb-close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  width: 46px; height: 46px; border: 1px solid rgba(224,212,187,.3);
  background: transparent; color: var(--cream); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s; z-index: 2;
}
.lb-close:hover { background: rgba(224,212,187,.1); border-color: var(--cream); }
.lb-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 52px; height: 52px; border: 1px solid rgba(224,212,187,.25);
  background: rgba(11,10,8,.5); color: var(--cream); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s; z-index: 2;
}
.lb-arrow:hover { background: var(--gold-bright); color: var(--dark); border-color: var(--gold-bright); }
.lb-prev { left: 1.5rem; } .lb-next { right: 1.5rem; }
.lb-arrow.hidden { display: none; }
.lb-count {
  position: absolute; bottom: 1.75rem; left: 50%; transform: translateX(-50%);
  font-size: .8rem; letter-spacing: .14em; color: var(--text-muted); z-index: 2;
}

/* ---- PARALLAX ---- */
[data-parallax] { will-change: transform; }

@media (max-width: 768px) {
  .lb-arrow { width: 42px; height: 42px; }
  .lb-prev { left: .5rem; } .lb-next { right: .5rem; }
  .branch-card-img { margin-inline: calc(-1 * clamp(2rem,4vw,2.75rem)); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}