/* ATİ assistant (T4). Prefix: as- */
.as-fab {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 55;
  display: inline-flex; align-items: center; gap: .5rem;
  height: 48px; padding: 0 1.15rem; border: 0; border-radius: var(--radius-full);
  background: var(--color-accent); color: var(--color-on-accent);
  font: 700 .9rem var(--font-head); letter-spacing: .08em; cursor: pointer;
  box-shadow: var(--shadow-glow);
  transition: transform var(--dur-base) var(--ease-out), background var(--dur-fast), opacity var(--dur-base), visibility var(--dur-base);
}
.as-fab::after {
  content: ""; position: absolute; inset: -4px; border-radius: inherit; pointer-events: none;
  border: 2px solid rgba(var(--accent-rgb), .55); opacity: 0;
  animation: as-breathe 3s var(--ease-in-out) infinite;
}
.as-fab:hover { background: var(--color-accent-hover); transform: translateY(-2px); }
.as-fab.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; transform: scale(.9); }
.as-fab svg { flex: none; }

@keyframes as-breathe {
  0% { opacity: .7; transform: scale(.96); }
  70%, 100% { opacity: 0; transform: scale(1.18); }
}

.as-panel {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 55;
  display: flex; flex-direction: column; overflow: hidden;
  width: min(24rem, calc(100vw - 2rem)); height: min(36rem, calc(100vh - 6rem)); height: min(36rem, calc(100dvh - 6rem));
  background: var(--color-surface); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-pop);
  transform-origin: bottom right; transform: scale(.96); opacity: 0; visibility: hidden; pointer-events: none;
  transition: transform 250ms var(--ease-out), opacity 250ms var(--ease-out), visibility 0s linear 250ms;
}
.as-panel.is-open { transform: none; opacity: 1; visibility: visible; pointer-events: auto; transition-delay: 0s; }

.as-head { display: flex; align-items: center; gap: .75rem; padding: .85rem 1rem; border-bottom: 1px solid var(--color-border-soft); }
.as-avatar { flex: none; width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--color-accent); color: var(--color-on-accent); }
.as-meta { flex: 1; min-width: 0; }
.as-name { font: 600 1rem var(--font-head); line-height: 1.2; }
.as-status { display: flex; align-items: center; gap: .4rem; font: 400 .72rem var(--font-body); color: var(--color-muted); }
.as-status span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.as-dot { flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--color-ok); box-shadow: 0 0 0 3px rgba(21,154,99,.18); }
.as-close.icon-btn { width: 40px; height: 40px; flex: none; }

.as-log { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 1rem; display: flex; flex-direction: column; gap: .6rem; scroll-behavior: smooth; }
.as-msg { max-width: 85%; padding: .65rem .9rem; font: 400 .9rem/1.5 var(--font-body); overflow-wrap: anywhere; }
.as-msg--bot { align-self: flex-start; background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: 16px 16px 16px 4px; }
.as-msg--user { align-self: flex-end; background: var(--color-accent); color: var(--color-on-accent); border-radius: 16px 16px 4px 16px; }
.as-msg b { font-weight: 600; }
.as-actions { margin-top: .6rem; }
.as-action.btn { height: 2.25rem; padding-inline: .9rem; font-size: .78rem; text-decoration: none; }

.as-typing { display: inline-flex; gap: 4px; align-items: center; padding: .85rem .95rem; }
.as-typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--color-muted); animation: as-bounce 1s var(--ease-in-out) infinite; }
.as-typing span:nth-child(2) { animation-delay: .15s; }
.as-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes as-bounce { 0%, 60%, 100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-4px); opacity: 1; } }

.as-chips { display: flex; gap: .4rem; overflow-x: auto; padding: .5rem 1rem .6rem; border-top: 1px solid var(--color-border-soft); scrollbar-width: none; flex: none; }
.as-chips::-webkit-scrollbar { display: none; }
.as-chip { flex: none; white-space: nowrap; cursor: pointer; background: transparent; font-family: var(--font-mono); }

.as-form { display: flex; gap: .5rem; align-items: center; padding: 0 1rem .5rem; flex: none; }
.as-input {
  flex: 1; min-width: 0; height: 40px; padding: 0 1rem; border-radius: var(--radius-full);
  background: var(--color-surface-2); color: var(--color-text); border: 1px solid var(--color-border);
  font: 400 .9rem var(--font-body);
}
.as-input::placeholder { color: var(--color-muted); }
.as-input:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.as-send.icon-btn { width: 40px; height: 40px; flex: none; cursor: pointer; }
.as-note { margin: 0; padding: 0 1rem .8rem; font: 400 .6rem/1.5 var(--font-mono); letter-spacing: .04em; color: var(--color-faint); flex: none; }

@media (max-width: 639.98px) {
  .as-panel { inset: auto .5rem .5rem .5rem; width: auto; height: min(80vh, 36rem); height: min(80dvh, 36rem); }
  .as-fab { right: 1rem; bottom: 1rem; }
  .as-fab { width: 48px; padding: 0; justify-content: center; gap: 0; }
  .as-fab-label { display: none; }
  .as-input { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .as-fab::after, .as-typing span { animation: none; }
  .as-fab::after { display: none; }
  .as-panel, .as-fab { transition: opacity 1ms linear, visibility 0s; transform: none; }
  .as-panel { transform: none; }
  .as-log { scroll-behavior: auto; }
}