/* fab.css - base styles of the shared, reusable floating action button (F2). Opt-in: pages that use a FAB
 * include this file themselves (it is NOT part of _Layout), so every other page is unaffected (AC8). */

.fab {
  position: fixed;
  z-index: 1030; /* above page content, below modals/toasts (Bootstrap modal backdrop is 1050+) */
  --fab-offset: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  /* safe-area-inset keeps the FAB clear of notches/home indicators on mobile. */
  bottom: calc(var(--fab-offset) + env(safe-area-inset-bottom, 0px));
  right: calc(var(--fab-offset) + env(safe-area-inset-right, 0px));
  max-height: calc(100vh - 2 * var(--fab-offset));
}

/* Position modifiers. Default is bottom-right (no modifier class needed, kept for explicitness). */
.fab--bottom-right { bottom: calc(var(--fab-offset) + env(safe-area-inset-bottom, 0px)); right: calc(var(--fab-offset) + env(safe-area-inset-right, 0px)); align-items: flex-end; }
.fab--bottom-left { bottom: calc(var(--fab-offset) + env(safe-area-inset-bottom, 0px)); left: calc(var(--fab-offset) + env(safe-area-inset-left, 0px)); align-items: flex-start; }
.fab--top-right { top: calc(var(--fab-offset) + env(safe-area-inset-top, 0px)); right: calc(var(--fab-offset) + env(safe-area-inset-right, 0px)); align-items: flex-end; }

.fab__main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 56px;
  height: 56px;
  padding: 0;
  color: var(--color-on-primary);
  background: var(--color-primary);
  border: none;
  border-radius: 999px;
  box-shadow: var(--shadow-raised);
  cursor: pointer;
}
.fab__main:hover { background: var(--color-primary-hover); }
.fab__main:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}
.fab__main svg { width: 24px; height: 24px; pointer-events: none; }

/* Speed-dial action stack: hidden (and out of layout) until the FAB is open. */
.fab__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: calc(100vh - 2 * var(--fab-offset) - 72px);
  overflow-y: auto;
}
.fab__actions[hidden] { display: none; }

.fab--bottom-left .fab__actions,
.fab--top-right .fab__actions { align-items: flex-start; }

.fab__action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-input-border);
  border-radius: 999px;
  box-shadow: var(--shadow-raised);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}
.fab__action:hover { background: var(--color-accent-subtle); color: var(--color-text); }
.fab__action:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}
.fab__action svg { width: 20px; height: 20px; flex: none; pointer-events: none; }
.fab__action-label { font-size: 0.875rem; }

/* Open-state transition; disabled entirely for users who prefer reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  .fab__actions {
    transition: opacity 0.15s ease, transform 0.15s ease;
    opacity: 0;
    transform: translateY(8px);
  }
  .fab--open .fab__actions {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 575.98px) {
  .fab { --fab-offset: 16px; }
  .fab__action-label { max-width: 55vw; overflow: hidden; text-overflow: ellipsis; }
}