/* =====================================================
   SCROLL PATH — camera, tracks, pinning
   ===================================================== */

/* Only activate when JS enables scroll path */
html.is-scroll-path {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html.is-scroll-path::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
  background: transparent;
}

#scroll-track {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  visibility: hidden;
  pointer-events: none;
}

/* The camera wrapper */
#viewport {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 1;
}

#camera {
  position: absolute;
  top: 0;
  left: 0;
  width: 400vw;
  height: 300vh;
  will-change: transform;
}

/* Sections positioned on the 2D canvas */
[data-section] {
  position: absolute;
  width: 100vw;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 0 80px;
  background: var(--mood-bg);
  color: var(--mood-text);
  overflow: hidden;
}

[data-section="hero"]   { top: 0; left: 0; z-index: 10; }
[data-section="bio"]    { top: 100vh; left: 0;    z-index: 20; }
[data-section="exp"]    { top: 100vh; left: 100vw;  z-index: 30; }
[data-section="builds"] { top: 100vh; left: 200vw;  z-index: 40; }
[data-section="skills"] { top: 200vh; left: 200vw;  z-index: 50; }
[data-section="contact"]{ top: 200vh; left: 300vw;  z-index: 60; }

/* Center single-panel horizontal tracks in the viewport */
html.is-scroll-path .horizontal-track {
  justify-content: center;
  padding: 0;
}

html.is-scroll-path .horizontal-track > .track-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100vh;
  margin: 0 auto;
  padding: 60px 0;
}

html.is-scroll-path .horizontal-track .track-inner {
  align-content: center;
  padding: 0;
  gap: 0;
}

/* Fallback: linear layout */
html:not(.is-scroll-path) #viewport {
  position: relative;
  width: 100%;
  height: auto;
  overflow: visible;
}

html:not(.is-scroll-path) #camera {
  position: relative;
  width: 100%;
  height: auto;
  transform: none !important;
}

html:not(.is-scroll-path) [data-section] {
  position: relative;
  top: auto;
  left: auto;
  width: 100%;
  min-height: auto;
  padding: 120px 0;
}

@media (max-width: 720px) {
  html:not(.is-scroll-path) [data-section] {
    padding: 120px 0 130px;
  }
}

/* Section content scroller (for vertical tracks) */
.track-content {
  position: relative;
  z-index: 1;
  width: min(var(--maxw), 92vw);
  margin: 0 auto;
}

.vertical-track .track-content {
  max-height: calc(100vh - 200px);
  overflow-y: auto;
  padding-right: 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--mood-border) transparent;
}

.vertical-track .track-content::-webkit-scrollbar {
  width: 6px;
}

.vertical-track .track-content::-webkit-scrollbar-thumb {
  background: var(--mood-border);
  border-radius: 3px;
}

/* In scroll-path mode, vertical content scrolling is driven by the camera
   progress; disable independent container scrolling to avoid wheel-event fights. */
html.is-scroll-path .vertical-track .track-content {
  overflow-y: hidden;
}

html:not(.is-scroll-path) .vertical-track .track-content {
  max-height: none;
  overflow: visible;
  padding-right: 0;
}

/* Horizontal track inner layout */
.horizontal-track .track-inner {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(var(--maxw), 92vw);
  gap: 10vw;
  width: min-content;
  height: 100%;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  padding: 0 6vw;
}

html:not(.is-scroll-path) .horizontal-track .track-inner {
  display: block;
  width: 100%;
  height: auto;
  padding: 0;
}

html:not(.is-scroll-path) .horizontal-track .track-panel {
  margin-bottom: 80px;
}

html:not(.is-scroll-path) .horizontal-track .track-panel:last-child {
  margin-bottom: 0;
}

/* Pin states */
[data-section].is-pinned {
  position: fixed;
  top: 0;
  left: 0;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mood-muted);
  opacity: 0.7;
  animation: hint-bob 2s ease-in-out infinite;
}

@keyframes hint-bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

.scroll-hint svg {
  width: 18px;
  height: 18px;
}

html.is-reduced-motion .scroll-hint,
html:not(.is-scroll-path) .scroll-hint {
  animation: none;
}