/* =====================================================
   USERS shared component styles
   Used by web components (light DOM) and page markup.
   ===================================================== */

/* ---------- Page scaffold (app-page) ---------- */
app-page { display: block; min-height: 100dvh; }

.topbar {
  position: sticky;
  top: 0;
  z-index: var(--layer-topbar);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: calc(var(--topbar-h) + env(safe-area-inset-top));
  padding: calc(var(--space-2) + env(safe-area-inset-top)) var(--space-3) var(--space-2);
  background: color-mix(in oklab, var(--app-bg-1) 72%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--app-hairline);
}

.topbar__back {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--app-text-primary);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.topbar__back:hover { background: var(--app-button-bg); }
.topbar__back:active { transform: scale(0.94); }

.topbar__heading {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  flex: 1;
  /* Keep titles clear of the centered logo: the heading starts 52px into the
     bar (44px back button + 8px gap) and the logo (30px tall, 339:133 ratio)
     spans ~38px either side of the center; +10px breathing room = 100px. */
  max-width: calc(50% - 100px);
}

/* Centered USERS logo, same pattern as the dashboard header */
.topbar__logo {
  position: absolute;
  left: 50%;
  top: calc(50% + (env(safe-area-inset-top, 0px) / 2));
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
}
.topbar__logo img { height: 30px; display: block; }
.topbar__icon { color: var(--app-accent-primary); }
.topbar__title {
  font-size: var(--text-md);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar__actions { display: flex; align-items: center; gap: var(--space-1); }

.page-main {
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-4) var(--space-4) calc(var(--space-8) + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  container: page-main / inline-size;
}

.page-intro { color: var(--app-text-secondary); max-width: 56ch; }

/* Page entrance — one orchestrated, staggered reveal of top-level sections */
@keyframes page-enter { from { opacity: 0; translate: 0 14px; } }
.page-main > * { animation: page-enter var(--dur-slow) var(--ease-out) backwards; }
.page-main > :nth-child(1) { animation-delay: 30ms; }
.page-main > :nth-child(2) { animation-delay: 90ms; }
.page-main > :nth-child(3) { animation-delay: 150ms; }
.page-main > :nth-child(4) { animation-delay: 210ms; }
.page-main > :nth-child(n+5) { animation-delay: 270ms; }

/* ---------- Cards ---------- */
.card {
  background: var(--app-card-bg);
  border: 1px solid var(--app-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.card--hover { transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), translate var(--dur-fast) var(--ease-out); }
.card--hover:hover { background: var(--app-card-hover); border-color: var(--app-card-border-hover); translate: 0 -2px; }
.card__title { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-md); margin-bottom: var(--space-2); }
.card__title .icon { color: var(--app-accent-primary); }

/* Responsive card grid — container query driven */
.card-grid { display: grid; gap: var(--space-3); }
@container page-main (min-width: 480px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card { padding: var(--space-5); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-base);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), filter var(--dur-fast) var(--ease-out);
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn--primary {
  background: linear-gradient(160deg, var(--app-accent-primary), var(--app-accent-glow));
  color: var(--app-text-on-accent);
  box-shadow: var(--glow-accent);
}
.btn--primary:hover { filter: brightness(1.08); }

.btn--ghost {
  background: var(--app-button-bg);
  border-color: var(--app-card-border);
  color: var(--app-text-primary);
}
.btn--ghost:hover { background: var(--app-button-hover); }

.btn--danger { background: var(--app-danger-overlay); border-color: var(--app-danger-border); color: var(--app-danger-text); }
.btn--sm { min-height: 34px; padding: var(--space-1) var(--space-3); font-size: var(--text-sm); }

/* ---------- Chips & badges ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--app-card-border);
  background: var(--app-button-bg);
  font-size: var(--text-sm);
  color: var(--app-text-secondary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge--live { background: var(--app-success-overlay); color: var(--app-success-text); }
.badge--demo { background: var(--app-warning-overlay); color: var(--app-warning-text); }
.badge--soon { background: var(--app-button-bg); color: var(--app-text-muted); }

/* ---------- Form fields ---------- */
.field { display: flex; flex-direction: column; gap: var(--space-1); }
.field__label { font-size: var(--text-sm); font-weight: 600; color: var(--app-text-secondary); }
.input, select.input, textarea.input {
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--app-card-border);
  background: var(--app-input-bg);
  color: var(--app-text-primary);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.input::placeholder { color: var(--app-text-muted); }
.input:focus-visible { outline: 2px solid transparent; border-color: var(--app-accent-primary); box-shadow: 0 0 0 3px var(--app-accent-overlay); }

/* ---------- Toast ---------- */
.toast-stack {
  position: fixed;
  bottom: calc(var(--space-4) + env(safe-area-inset-bottom));
  left: 50%;
  translate: -50% 0;
  z-index: var(--layer-toast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  pointer-events: none;
  width: min(92vw, 420px);
}
.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--app-overlay-dark);
  border: 1px solid var(--app-card-border);
  box-shadow: var(--shadow-2);
  font-size: var(--text-sm);
  animation: toast-in var(--dur-base) var(--ease-spring);
}
.toast--success { border-color: oklch(72% 0.2 150 / 0.4); }
.toast--error { border-color: var(--app-danger-border); }
.toast.is-leaving { animation: toast-out var(--dur-base) var(--ease-out) forwards; }
@keyframes toast-in { from { opacity: 0; translate: 0 12px; scale: 0.96; } }
@keyframes toast-out { to { opacity: 0; translate: 0 8px; scale: 0.97; } }

/* ---------- Empty state ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-7) var(--space-4);
  text-align: center;
  color: var(--app-text-secondary);
}
.empty-state .icon {
  width: 44px;
  height: 44px;
  color: var(--app-accent-primary);
  opacity: 0.8;
}
.empty-state__heading { font-size: var(--text-md); color: var(--app-text-primary); }

/* ---------- Skeleton shimmer ---------- */
/* Consumers should set aria-hidden="true" on skeleton nodes. */
.skeleton {
  border-radius: var(--radius-sm);
  background: linear-gradient(100deg, var(--app-bg-2) 40%, var(--app-bg-3) 50%, var(--app-bg-2) 60%);
  background-size: 200% 100%;
  animation: skeleton 1.4s ease-in-out infinite;
  color: transparent;
  -webkit-user-select: none;
  user-select: none;
}
@keyframes skeleton { to { background-position-x: -200%; } }

/* ---------- Demo banner ---------- */
.demo-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in oklab, var(--app-warning, #f59e0b) 12%, transparent);
  border: 1px solid color-mix(in oklab, var(--app-warning, #f59e0b) 35%, transparent);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--app-warning-text);
}
.demo-banner__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--app-warning);
}
.demo-banner__msg { flex: 1; }
.demo-banner__retry { margin-left: auto; flex-shrink: 0; }

/* ---------- Chat panel ---------- */
.chat-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Log — scrollable conversation area */
.chat-panel__log {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-height: 52vh;
  overflow-y: auto;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--app-hairline);
  background: color-mix(in oklab, var(--app-bg-1) 60%, transparent);
  scroll-behavior: smooth;
}
.chat-panel__log:focus-visible {
  outline: 2px solid var(--app-accent-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--app-accent-overlay);
}
@media (prefers-reduced-motion: reduce) {
  .chat-panel__log { scroll-behavior: auto; }
}

/* Demo placeholder area */
.chat-panel__demo:empty { display: none; }
.chat-panel__demo { display: flex; flex-direction: column; }

/* Suggestion chips row */
.chat-panel__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.chat-panel__chip {
  /* inherits .btn .btn--sm .btn--ghost; no extra rules needed — kept for specificity anchor */
}

/* Input row */
.chat-panel__input-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
}
.chat-panel__textarea {
  flex: 1;
  min-height: 44px;
  max-height: 160px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--app-card-border);
  background: var(--app-input-bg);
  color: var(--app-text-primary);
  font-size: var(--text-base);
  font-family: inherit;
  resize: vertical;
  line-height: var(--leading-body);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.chat-panel__textarea::placeholder { color: var(--app-text-muted); }
.chat-panel__textarea:focus-visible {
  outline: 2px solid transparent;
  border-color: var(--app-accent-primary);
  box-shadow: 0 0 0 3px var(--app-accent-overlay);
}
.chat-panel__send {
  flex-shrink: 0;
  align-self: flex-end;
}
.chat-panel__send-label {
  /* visible text inside .btn--primary; inherits its colour */
}

/* Bubbles */
.chat-panel__bubble {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  max-width: 85%;
}
.chat-panel__bubble--user {
  align-self: flex-end;
  align-items: flex-end;
}
.chat-panel__bubble--assistant {
  align-self: flex-start;
  align-items: flex-start;
}
.chat-panel__role {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--app-text-secondary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding-inline: var(--space-1);
}
.chat-panel__text {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 0;
}
.chat-panel__bubble--user .chat-panel__text {
  background: color-mix(in oklab, var(--app-accent-primary) 22%, var(--app-bg-2));
  border: 1px solid color-mix(in oklab, var(--app-accent-primary) 35%, transparent);
  color: var(--app-text-primary);
  border-bottom-right-radius: var(--radius-sm);
}
.chat-panel__bubble--assistant .chat-panel__text {
  background: var(--app-card-bg);
  border: 1px solid var(--app-card-border);
  color: var(--app-text-primary);
  border-bottom-left-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
}

/* Demo bubble — dashed border, muted tint */
.chat-panel__bubble--demo .chat-panel__text {
  background: color-mix(in oklab, var(--app-warning, #f59e0b) 8%, var(--app-bg-2));
  border: 1px dashed color-mix(in oklab, var(--app-warning, #f59e0b) 35%, transparent);
  color: var(--app-text-primary);
}

/* Notice — inline muted note */
.chat-panel__notice {
  font-size: var(--text-sm);
  color: var(--app-text-secondary);
  text-align: center;
  margin: 0;
  padding: var(--space-1) var(--space-2);
  font-style: italic;
}

/* Reduced-motion: suppress bubble slide-in animation if ever added */
@media (prefers-reduced-motion: reduce) {
  .chat-panel__bubble,
  .chat-panel__text { transition: none; }
}