/* ============================================================
   The Tether Island — a persistent presence pill.
   Honest web analogue of a live-activity island: always on
   screen, expands on real state changes, never claims to be
   native OS UI.
   ============================================================ */

.island {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + 10px);
  left: 50%;
  translate: -50% 0;
  z-index: 70;
  min-width: 176px;
  max-width: min(93vw, 460px);
  border-radius: var(--r-pill);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: border-radius 340ms var(--ease-spring),
              box-shadow 340ms var(--ease-out),
              min-width 340ms var(--ease-spring);
  /* state accent flows to the rim */
  --island-accent: var(--st-idle);
  border-color: color-mix(in srgb, var(--island-accent) 26%, var(--glass-edge)) !important;
}
.island:focus-visible { outline-offset: 3px; }

.island-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 6px 8px;
}

.island .pip { flex: none; }

.island-label {
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.island-sub {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-2);
  white-space: nowrap;
}

.island-dot {
  flex: none;
  width: 7px; height: 7px;
  margin-left: auto;
  border-radius: 50%;
  background: var(--island-accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--island-accent) 80%, transparent);
}
.island-dot--pulse { animation: chipPulse 1.8s var(--ease-out) infinite; }

/* ---------- expanded ---------- */
.island-expanded-content {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 380ms var(--ease-spring), opacity 240ms var(--ease-out);
}
.island-expanded-content > div { overflow: hidden; }

.island.is-open {
  border-radius: var(--r-xl);
  min-width: min(93vw, 380px);
  box-shadow: var(--shadow-glass), 0 24px 60px rgba(0,0,0,0.5);
}
.island.is-open .island-expanded-content {
  grid-template-rows: 1fr;
  opacity: 1;
}

.island-detail {
  padding: 2px 18px 16px 18px;
}
.island-detail-title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  margin: 2px 0 2px;
}
.island-detail-copy {
  font-size: var(--fs-small);
  color: var(--text-1);
  line-height: 1.5;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.island-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.island-actions .btn { padding: 8px 16px; font-size: var(--fs-small); }

/* state accents */
.island[data-mood="thinking"]   { --island-accent: var(--st-thinking); }
.island[data-mood="needs_you"]  { --island-accent: var(--st-needs); }
.island[data-mood="notice"]     { --island-accent: var(--st-notice); }
.island[data-mood="success_soft"] { --island-accent: var(--st-success); }
.island[data-mood="uncertain"]  { --island-accent: var(--st-uncertain); }
.island[data-mood="sleep"]      { --island-accent: var(--st-sleep); }

/* arrival: the island "lands" once on boot */
.island.is-landing { animation: islandLand 700ms var(--ease-spring) 1; }
@keyframes islandLand {
  from { translate: -50% -140%; opacity: 0; }
  to { translate: -50% 0; opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .island, .island-expanded-content { transition: none; }
}