/*
 * pager.css
 * Full-page section layout + menu overlay
 */

/* ── Lock scroll, stack pages ──────────────────────────────────────────── */
html, body {
  overflow: hidden !important;
  height: 100%;
}

/* Techy bg canvas sits behind everything */
#bg-canvas {
  z-index: 0;
}

/* Wrapper that holds all pages */
#page-wrapper {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* Every section becomes a full-viewport page */
#page-wrapper > section {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4rem);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

/* Hero is full-bleed */
#page-wrapper > section#hero {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Reset layout.css section flex that fights pager */
#page-wrapper > section {
  display: block !important;
  padding: 0 !important;
  overflow: hidden !important;
}

/* Hero overrides */
#page-wrapper > section#hero {
  display: flex !important;
  align-items: center;
  justify-content: center;
}

/* Every non-hero section: container fills the safe area between HUD and bottom bar */
#page-wrapper > section:not(#hero) > .container {
  position: absolute !important;
  top: 6.5rem !important;
  bottom: 5.5rem !important;
  left: 0 !important;
  right: 0 !important;
  width: auto !important;
  max-width: none !important;
  margin: 0 !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  padding: 0 3rem !important;
  box-sizing: border-box !important;
  z-index: 1;
}

/* Section header: compact */
#page-wrapper > section:not(#hero) .section-header {
  margin-bottom: 1.6rem !important;
}

/* ── Centred sections (about, neofetch) ── */
#page-wrapper > section#about > .container,
#page-wrapper > section#philosophy > .container {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

#page-wrapper > section.page-active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#page-wrapper > section.page-exit-up {
  opacity: 0;
  transform: translateY(-4rem);
  pointer-events: none;
}

#page-wrapper > section.page-exit-down {
  opacity: 0;
  transform: translateY(4rem);
  pointer-events: none;
}

/* ── HUD (always on top) ───────────────────────────────────────────────── */
.hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem 3rem;
  pointer-events: none;
}

.hud-logo {
  pointer-events: auto;
  font-family: 'Fira Code', monospace;
  font-size: 1.4rem;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: 0.05em;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.hud-logo:hover { opacity: 1; }

/* ── Pill nav bar (top-right) ──────────────────────────────────────────── */
.hud-nav {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 10rem;
  padding: 0.4rem 0.6rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hud-nav-link {
  position: relative;
  padding: 0.5rem 1.2rem;
  font-family: 'Fira Code', monospace;
  font-size: 1.15rem;
  color: var(--color-text-tertiary);
  text-decoration: none;
  border-radius: 10rem;
  transition: color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.hud-nav-link:hover {
  color: var(--color-text-primary);
}

.hud-nav-link.active {
  color: var(--color-bg-primary);
  background: var(--color-text-primary);
}

/* ── Page indicator (right side dots) ─────────────────────────────────── */
.page-indicator {
  position: fixed;
  right: 2.4rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.page-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-tertiary);
  opacity: 0.4;
  transition: opacity 0.3s ease, background 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}

.page-dot.active {
  background: var(--color-accent-1);
  opacity: 1;
  transform: scale(1.4);
}

/* ── Arrow nav (bottom centre) ─────────────────────────────────────────── */
.page-arrows {
  position: fixed;
  bottom: 2.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  gap: 1.2rem;
}

.page-arrow-btn {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.4rem;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.page-arrow-btn:hover {
  border-color: var(--color-accent-1);
  color: var(--color-accent-1);
}
.page-arrow-btn:disabled {
  opacity: 0.2;
  cursor: default;
}

/* ── Page counter (bottom left) ───────────────────────────────────────── */
.page-counter {
  position: fixed;
  bottom: 2.4rem;
  left: 3rem;
  z-index: 300;
  font-family: 'Fira Code', monospace;
  font-size: 1.1rem;
  color: var(--color-text-tertiary);
  letter-spacing: 0.1em;
}

/* ── Edge-click zones (desktop) ───────────────────────────────────────── */
.edge-zone {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  z-index: 290;
  width: 12rem;
  height: 6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-tertiary);
  font-size: 1.2rem;
  opacity: 0;
  transition: opacity 0.25s ease;
  border-radius: 0.6rem;
}

.edge-zone:hover {
  opacity: 1;
  color: var(--color-text-primary);
}

.edge-prev {
  top: 0;
}

.edge-next {
  bottom: 0;
}

/* ── Mobile ────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hud {
    padding: 1.2rem 1.6rem;
    flex-wrap: wrap;
    gap: 0.8rem;
  }
  .hud-nav {
    gap: 0;
    padding: 0.3rem 0.4rem;
  }
  .hud-nav-link {
    padding: 0.4rem 0.8rem;
    font-size: 1rem;
  }
  .menu-overlay-inner { padding: 1.6rem; }
  .menu-label { font-size: clamp(2.4rem, 8vw, 4rem); }
  .page-indicator { right: 0.8rem; }
  .page-counter { left: 1.6rem; font-size: 1rem; }
  .page-arrows { bottom: 1.6rem; gap: 0.8rem; }
  .page-arrow-btn { width: 3rem; height: 3rem; font-size: 1.2rem; }
  /* Container padding tighter on mobile */
  #page-wrapper > section:not(#hero) > .container {
    padding: 0 1.6rem !important;
    top: 7.5rem !important;
    bottom: 5rem !important;
  }
}

@media (max-width: 400px) {
  .hud-nav-link { padding: 0.3rem 0.6rem; font-size: 0.9rem; }
  .page-indicator { display: none; }
}