/* ==============================================================
   shared-nav.css - Page navigation dropdown and page transitions
   ============================================================== */
/* ===== PAGE NAV DROPDOWN ===== */
.page-nav-spacer { flex: 1; }

.page-nav {
  position: relative;
  flex-shrink: 0;
}

.page-nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-3);
  border: 1px solid var(--border-light);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 12px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  white-space: nowrap;
  user-select: none;
}
.page-nav-btn:hover,
.page-nav-btn.open {
  border-color: var(--accent);
  background: var(--bg-4);
  box-shadow: 0 0 0 2px var(--accent-dim);
}

.page-nav-icon  { color: var(--accent); display: flex; align-items: center; }
.page-nav-label { min-width: 56px; }
.page-nav-caret {
  color: var(--text-2);
  display: flex;
  align-items: center;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.page-nav-btn.open .page-nav-caret { transform: rotate(180deg); }

.page-nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--bg-3);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.55), 0 2px 8px rgba(0,0,0,0.3);
  overflow: hidden;
  z-index: 200;
  opacity: 0;
  transform: translateY(-6px) scaleY(0.96);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.page-nav-dropdown.open {
  opacity: 1;
  transform: translateY(0) scaleY(1);
  pointer-events: all;
}

.page-nav-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 11px 16px;
  background: transparent;
  border: none;
  color: var(--text-2);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  text-align: left;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.18s ease, transform 0.18s ease, color 0.15s, background 0.15s;
}
.page-nav-dropdown.open .page-nav-option:nth-child(1)  { opacity: 1; transform: translateX(0); transition-delay: 0.04s; }
.page-nav-dropdown.open .page-nav-option:nth-child(2)  { opacity: 1; transform: translateX(0); transition-delay: 0.09s; }
.page-nav-dropdown.open .page-nav-option:nth-child(3)  { opacity: 1; transform: translateX(0); transition-delay: 0.14s; }
.page-nav-dropdown.open .page-nav-option:nth-child(4)  { opacity: 1; transform: translateX(0); transition-delay: 0.19s; }
.page-nav-dropdown.open .page-nav-option:nth-child(5)  { opacity: 1; transform: translateX(0); transition-delay: 0.24s; }
.page-nav-dropdown.open .page-nav-option:nth-child(6)  { opacity: 1; transform: translateX(0); transition-delay: 0.29s; }
.page-nav-dropdown.open .page-nav-option:nth-child(7)  { opacity: 1; transform: translateX(0); transition-delay: 0.34s; }
.page-nav-dropdown.open .page-nav-option:nth-child(n+8){ opacity: 1; transform: translateX(0); transition-delay: 0.39s; }
.page-nav-option:hover { background: var(--bg-4); color: var(--text); }
.page-nav-option.active,
.page-nav-option.active svg { color: var(--accent); }
.page-nav-option + .page-nav-option { border-top: 1px solid var(--border); }

/* ===== PAGE TRANSITIONS ===== */
.page { animation: pageIn 0.32s cubic-bezier(0.4, 0, 0.2, 1) both; padding-top: var(--header-h); }

@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page.page-out {
  animation: pageOut 0.22s cubic-bezier(0.4, 0, 0.2, 1) both;
  pointer-events: none;
}

@keyframes pageOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-8px); }
}