/*
 * Echoo · Link Up
 *
 * Styles for the "I'm here" check-in affordance, the match pop-up, and the
 * ephemeral chat sheet. Follows docs/ui-ux-design-system.md: single accent
 * (--peach), glass surfaces, Inter, radius 24px for the modal / 14px for cards,
 * 180ms motion, reduced-motion respected. No new color tokens.
 *
 * Loaded by events.html alongside echoo-linkup.js.
 */

:root {
  /* Link Up reuses the page tokens; these are local-only conveniences. */
  --linkup-glass: rgba(21, 21, 20, 0.92);
  --linkup-scrim: rgba(0, 0, 0, 0.64);
}

/* ───────────────────────────────────────────────────────────────────────
   Check-in affordance — a flat dot + caps label (no heavy pill). Sits in
   the place-detail action row next to Directions / Uber.
   ─────────────────────────────────────────────────────────────────────── */
.echoo-linkup-checkin {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 4px;
  background: transparent;
  border: 0;
  color: var(--soft);
  font: 650 11px/1 var(--echoo-font, "Inter", sans-serif);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.echoo-linkup-checkin .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--peach);
  box-shadow: 0 0 0 4px rgba(247, 213, 178, 0.12);
}
.echoo-linkup-checkin.is-active {
  color: var(--ink);
}
.echoo-linkup-checkin.is-active .dot {
  background: var(--peach);
  animation: echoo-linkup-pulse 1.8s ease-in-out infinite;
}
@keyframes echoo-linkup-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(247, 213, 178, 0.12); }
  50%      { box-shadow: 0 0 0 7px rgba(247, 213, 178, 0.04); }
}

/* ───────────────────────────────────────────────────────────────────────
   Match pop-up — center modal, scale-in (mirrors .location-modal).
   ─────────────────────────────────────────────────────────────────────── */
#echoo-linkup-modal[hidden] { display: none; }

.echoo-linkup-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--linkup-scrim);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 27px;
  opacity: 0;
  transition: opacity 200ms ease;
}
.echoo-linkup-backdrop.is-open { opacity: 1; }

.echoo-linkup-card {
  width: 100%;
  max-width: 360px;
  background: var(--linkup-glass);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px 22px 20px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  text-align: center;
  transform: scale(0.97);
  opacity: 0;
  transition: opacity 200ms ease, transform 200ms ease;
}
.echoo-linkup-backdrop.is-open .echoo-linkup-card {
  transform: scale(1);
  opacity: 1;
}

.echoo-linkup-eyebrow {
  margin: 0 0 14px;
  font: 650 11px/1 "Inter", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--peach);
}

.echoo-linkup-avatars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 18px;
}
.echoo-linkup-avatar {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(248, 245, 239, 0.06);
  border: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 680 20px/1 "Inter", sans-serif;
  color: var(--ink);
}
.echoo-linkup-connector {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--peach);
}

.echoo-linkup-name {
  margin: 0 0 4px;
  font: 680 22px/1.1 "Inter", sans-serif;
  color: var(--ink);
}
.echoo-linkup-cue {
  margin: 0 0 14px;
  font: 520 13px/1.4 "Inter", sans-serif;
  color: var(--muted);
}
.echoo-linkup-place {
  margin: 0 0 18px;
  font: 520 12px/1 "Inter", sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(248, 245, 239, 0.5);
}

.echoo-linkup-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.echoo-linkup-btn {
  min-height: 48px;
  border-radius: 999px;
  border: 0;
  font: 680 14px/1 "Inter", sans-serif;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 180ms ease, transform 180ms ease;
}
.echoo-linkup-btn:active { transform: scale(0.98); }
.echoo-linkup-btn--primary {
  background: var(--peach);
  color: #111;
}
.echoo-linkup-btn--secondary {
  background: rgba(248, 245, 239, 0.06);
  border: 1px solid var(--line);
  color: var(--ink);
}
.echoo-linkup-btn[disabled] { opacity: 0.5; cursor: default; }

.echoo-linkup-footer {
  margin: 14px 0 0;
  font: 520 11px/1.3 "Inter", sans-serif;
  color: rgba(248, 245, 239, 0.42);
}

/* ───────────────────────────────────────────────────────────────────────
   Chat sheet — bottom-anchored, slides up (mirrors .sheet motion).
   ─────────────────────────────────────────────────────────────────────── */
#echoo-linkup-chat[hidden] { display: none; }

.echoo-linkup-chat-backdrop {
  position: fixed;
  inset: 0;
  z-index: 95;
  background: var(--linkup-scrim);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  transition: opacity 200ms ease;
}
.echoo-linkup-chat-backdrop.is-open { opacity: 1; }

.echoo-linkup-chat-sheet {
  width: 100%;
  max-width: 430px;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  background: var(--linkup-glass);
  border-top: 1px solid var(--line-strong);
  border-radius: 24px 24px 0 0;
  padding-bottom: env(safe-area-inset-bottom);
  transform: translateY(18px);
  transition: transform 220ms ease;
}
.echoo-linkup-chat-backdrop.is-open .echoo-linkup-chat-sheet {
  transform: translateY(0);
}

.echoo-linkup-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--line);
}
.echoo-linkup-chat-title {
  font: 650 15px/1.2 "Inter", sans-serif;
  color: var(--ink);
}
.echoo-linkup-chat-sub {
  font: 520 11px/1 "Inter", sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(248, 245, 239, 0.5);
  margin-top: 4px;
}
.echoo-linkup-chat-actions {
  display: flex;
  gap: 6px;
}
.echoo-linkup-chat-action {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(248, 245, 239, 0.04);
  color: var(--muted);
  font: 520 11px/1 "Inter", sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}
.echoo-linkup-chat-action:active { transform: scale(0.97); }

.echoo-linkup-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  -webkit-overflow-scrolling: touch;
}
.echoo-linkup-bubble {
  max-width: 76%;
  padding: 9px 13px;
  border-radius: 16px;
  font: 520 14px/1.35 "Inter", sans-serif;
  word-break: break-word;
}
.echoo-linkup-bubble--mine {
  align-self: flex-end;
  background: var(--peach);
  color: #111;
  border-bottom-right-radius: 5px;
}
.echoo-linkup-bubble--theirs {
  align-self: flex-start;
  background: rgba(248, 245, 239, 0.06);
  color: var(--ink);
  border: 1px solid var(--line);
  border-bottom-left-radius: 5px;
}
.echoo-linkup-system {
  align-self: center;
  font: 520 11px/1.3 "Inter", sans-serif;
  color: rgba(248, 245, 239, 0.42);
  text-align: center;
  padding: 8px 14px;
}

.echoo-linkup-composer {
  display: flex;
  gap: 8px;
  padding: 10px 14px 14px;
  border-top: 1px solid var(--line);
}
.echoo-linkup-composer input {
  flex: 1;
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(248, 245, 239, 0.04);
  color: var(--ink);
  padding: 0 16px;
  font: 520 14px/1 "Inter", sans-serif;
  outline: none;
}
.echoo-linkup-composer input:focus { border-color: var(--peach); }
.echoo-linkup-composer button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 0;
  background: var(--peach);
  color: #111;
  font-size: 16px;
  cursor: pointer;
}
.echoo-linkup-composer button[disabled] { opacity: 0.4; }

/* ───────────────────────────────────────────────────────────────────────
   Reduced motion
   ─────────────────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .echoo-linkup-checkin.is-active .dot { animation: none; }
  .echoo-linkup-card,
  .echoo-linkup-chat-sheet,
  .echoo-linkup-backdrop,
  .echoo-linkup-chat-backdrop {
    transition-duration: 0.01ms !important;
  }
}