/* ============================================================
   TAB SWITCHER — shared dock + cross-page sweep transition
   The transition IS the brand metaphor: one skin lifts away,
   another identity is underneath. Room for a third tab.
   ============================================================ */

.tabdock {
  position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%);
  z-index: 160;
  display: flex; align-items: center; gap: 4px;
  padding: 5px; border-radius: 999px;
  background: rgba(10, 13, 20, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
}
.tabdock a.tab {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono, "JetBrains Mono", monospace); font-size: 11px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(238, 241, 248, 0.6); text-decoration: none;
  padding: 9px 18px; border-radius: 999px;
  transition: color 0.25s, background 0.25s, transform 0.25s;
  white-space: nowrap;
}
.tabdock a.tab:hover { color: #fff; }
.tabdock a.tab.on { background: #eef1f8; color: #0a0d14; font-weight: 600; }
.tabdock a.tab.soon {
  color: rgba(238, 241, 248, 0.32); cursor: default;
  border: 1px dashed rgba(255, 255, 255, 0.18);
}
.tabdock a.tab.soon:hover { color: rgba(238, 241, 248, 0.32); }
.tabdock a.tab.soon .soon-tag {
  font-size: 8px; letter-spacing: 0.2em; padding: 2px 6px;
  border-radius: 999px; background: rgba(255, 255, 255, 0.1);
}
.tabdock .tab-glyph { width: 9px; height: 9px; border-radius: 3px; flex: none; }

/* ---------- sweep ---------- */
.sweep {
  position: fixed; inset: 0; z-index: 300; pointer-events: none;
  visibility: hidden;
}
.sweep.run { visibility: visible; pointer-events: all; }
.sweep .sw-a, .sweep .sw-b {
  position: absolute; inset: -2% 0;
  transform: translateY(102%);
  border-radius: 40px 40px 0 0;
}
.sweep .sw-a { transition: transform 0.52s cubic-bezier(0.7, 0, 0.3, 1); }
.sweep .sw-b { transition: transform 0.52s cubic-bezier(0.7, 0, 0.3, 1) 0.07s; display: grid; place-items: center; }
.sweep .sw-label {
  font-family: var(--disp, "Space Grotesk", sans-serif);
  font-size: clamp(30px, 5vw, 58px); font-weight: 700; letter-spacing: -0.03em;
  opacity: 0; transform: translateY(18px);
  transition: opacity 0.3s ease 0.3s, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1) 0.3s;
}
.sweep.cover .sw-a, .sweep.cover .sw-b { transform: translateY(0); border-radius: 0; }
.sweep.cover .sw-label { opacity: 1; transform: none; }
.sweep.leave .sw-a { transform: translateY(-102%); border-radius: 0 0 40px 40px; }
.sweep.leave .sw-b { transform: translateY(-102%); border-radius: 0 0 40px 40px; }
.sweep.leave .sw-label { opacity: 0; transform: translateY(-18px); transition-delay: 0s; }

@media (max-width: 560px) {
  .tabdock a.tab { padding: 8px 13px; font-size: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .sweep .sw-a, .sweep .sw-b, .sweep .sw-label { transition-duration: 0.001s !important; }
}