/* =========================================================
   BinBuddy — Chat widget styles
   ========================================================= */

.chat-fab {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: var(--bb-grad-primary);
  color: #fff;
  box-shadow: 0 16px 40px rgba(13,93,255,0.45), 0 4px 12px rgba(13,93,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
  animation: fabIn 0.5s var(--ease-out) 0.6s both;
}
@keyframes fabIn {
  from { transform: translateY(40px) scale(0.6); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}
.chat-fab:hover { transform: translateY(-3px) scale(1.04); box-shadow: 0 22px 50px rgba(13,93,255,0.55); }
.chat-fab svg { width: 28px; height: 28px; transition: transform var(--dur-base) var(--ease-out); }
.chat-fab .close { display: none; }
.chat-fab .open { display: block; }

.chat-fab.is-active .open { display: none; }
.chat-fab.is-active .close { display: block; }

.chat-fab__badge {
  position: absolute;
  top: 6px; right: 6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #ef4444;
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  display: none;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
  box-shadow: 0 2px 6px rgba(239,68,68,0.4);
}
.chat-fab.has-unread .chat-fab__badge { display: flex; animation: pulse-red 1.5s var(--ease-in-out) infinite; }
@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.5); }
  50% { box-shadow: 0 0 0 8px rgba(239,68,68,0); }
}

.chat-window {
  position: fixed;
  bottom: calc(var(--sp-6) + 72px);
  right: var(--sp-6);
  width: min(calc(100vw - 2 * var(--sp-4)), 400px);
  height: min(620px, calc(100vh - 120px));
  background: #fff;
  border-radius: var(--r-xl);
  box-shadow: 0 30px 80px rgba(5,7,13,0.22), 0 8px 24px rgba(5,7,13,0.12);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px) scale(0.98);
  transform-origin: bottom right;
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
  border: 1px solid rgba(5,7,13,0.06);
}
.chat-window.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.chat-header {
  padding: var(--sp-4) var(--sp-5);
  background: var(--bb-grad-hero);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  position: relative;
  flex-shrink: 0;
}
.chat-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle 200px at 20% 20%, rgba(22,163,74,0.35), transparent 70%);
  pointer-events: none;
}
.chat-header__main {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  position: relative;
  z-index: 1;
}
.chat-header__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: #fff;
  color: var(--bb-blue-700);
  font-weight: 800;
  font-family: var(--bb-font-display);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  position: relative;
}
.chat-header__avatar::after {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #22c55e;
  border: 2px solid var(--bb-blue-800);
}
.chat-header__name {
  font-family: var(--bb-font-display);
  font-weight: 700;
  font-size: var(--bb-text-base);
  line-height: 1.2;
}
.chat-header__status {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--bb-text-xs);
  color: rgba(255,255,255,0.85);
  margin-top: 2px;
}
.chat-header__status::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #55d387;
  box-shadow: 0 0 0 3px rgba(85,211,135,0.3);
}

.chat-header__actions {
  display: flex;
  gap: var(--sp-1);
  position: relative;
  z-index: 1;
}
.chat-icon-btn {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-fast) var(--ease-out);
}
.chat-icon-btn:hover { background: rgba(255,255,255,0.22); }
.chat-icon-btn svg { width: 18px; height: 18px; }

/* ---------- Pinned info banner (between header and body) ---------- */
.chat-info-banner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  background: linear-gradient(180deg, rgba(13,93,255,0.06), rgba(22,163,74,0.06));
  border-top: 1px solid rgba(5,7,13,0.04);
  border-bottom: 1px solid rgba(5,7,13,0.05);
  color: var(--bb-ink-700);
  font-size: 12px;
  line-height: 1.45;
  flex-shrink: 0;
}
.chat-info-banner svg {
  width: 15px; height: 15px;
  color: var(--bb-blue-600);
  flex-shrink: 0;
  margin-top: 1px;
}

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-5);
  background:
    linear-gradient(180deg, #f5f7fb 0%, #fff 100%);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  scroll-behavior: smooth;
}
.chat-body::-webkit-scrollbar { width: 6px; }
.chat-body::-webkit-scrollbar-thumb { background: var(--bb-ink-200); border-radius: 3px; }
.chat-body::-webkit-scrollbar-thumb:hover { background: var(--bb-ink-300); }

.chat-divider {
  align-self: center;
  padding: var(--sp-1) var(--sp-3);
  font-size: 11px;
  color: var(--bb-ink-500);
  background: var(--bb-ink-100);
  border-radius: var(--r-pill);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.chat-msg {
  max-width: 82%;
  padding: var(--sp-3) var(--sp-4);
  border-radius: 18px;
  font-size: var(--bb-text-sm);
  line-height: 1.5;
  word-wrap: break-word;
  animation: msgIn 0.3s var(--ease-out);
  position: relative;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-msg--in {
  align-self: flex-start;
  background: #fff;
  color: var(--bb-ink-800);
  border: 1px solid var(--bb-ink-200);
  border-bottom-left-radius: 6px;
  box-shadow: var(--sh-xs);
}

.chat-msg--out {
  align-self: flex-end;
  background: var(--bb-grad-primary);
  color: #fff;
  border-bottom-right-radius: 6px;
  box-shadow: 0 4px 12px rgba(13,93,255,0.25);
}

.chat-msg--system {
  align-self: center;
  background: var(--bb-blue-50);
  color: var(--bb-blue-700);
  border: 1px solid var(--bb-blue-100);
  font-size: var(--bb-text-xs);
  text-align: center;
  max-width: 90%;
  border-radius: var(--r-md);
}

.chat-msg__time {
  display: block;
  font-size: 10px;
  margin-top: 4px;
  opacity: 0.7;
  letter-spacing: 0.02em;
}

.chat-msg__quick {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}
.chat-quick-btn {
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--bb-blue-700);
  border: 1px solid var(--bb-blue-200);
  font-size: var(--bb-text-xs);
  font-weight: 600;
  transition: all var(--dur-fast) var(--ease-out);
}
.chat-quick-btn:hover {
  background: var(--bb-blue-50);
  border-color: var(--bb-blue-400);
  transform: translateY(-1px);
}

.chat-typing {
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--bb-ink-200);
  border-radius: 18px;
  border-bottom-left-radius: 6px;
  padding: var(--sp-3) var(--sp-4);
  display: none;
  gap: 4px;
}
.chat-typing.is-visible { display: flex; }
.chat-typing span {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--bb-ink-400);
  animation: typing-bounce 1.2s var(--ease-in-out) infinite;
}
.chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.chat-typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes typing-bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
  40% { transform: translateY(-4px); opacity: 1; }
}

.chat-footer {
  padding: var(--sp-3) var(--sp-4);
  background: #fff;
  border-top: 1px solid var(--bb-ink-100);
  flex-shrink: 0;
}

.chat-input-row {
  display: flex;
  align-items: flex-end;
  gap: var(--sp-2);
  background: var(--bb-ink-50);
  border: 1px solid var(--bb-ink-200);
  border-radius: 22px;
  padding: 6px 6px 6px var(--sp-4);
  transition: all var(--dur-fast) var(--ease-out);
}
.chat-input-row:focus-within {
  border-color: var(--bb-blue-400);
  box-shadow: 0 0 0 4px rgba(13,93,255,0.12);
  background: #fff;
}

.chat-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  resize: none;
  font-family: inherit;
  font-size: var(--bb-text-sm);
  color: var(--bb-ink-900);
  padding: var(--sp-2) 0;
  min-height: 24px;
  max-height: 100px;
  line-height: 1.4;
}
.chat-input::placeholder { color: var(--bb-ink-400); }

.chat-send {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bb-grad-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.chat-send:hover { transform: scale(1.06); }
.chat-send:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.chat-send svg { width: 16px; height: 16px; }

.chat-footer__hint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-2);
  padding: 0 var(--sp-2);
  font-size: 10px;
  color: var(--bb-ink-400);
  letter-spacing: 0.02em;
}
.chat-footer__hint button {
  font-size: 10px;
  color: var(--bb-ink-500);
  padding: 0;
  background: none;
}
.chat-footer__hint button:hover { color: var(--bb-blue-600); text-decoration: underline; }

/* When embedded in admin history viewer (no FAB, full-bleed) */
.chat-inline {
  position: relative;
  width: 100%;
  height: 100%;
  bottom: auto; right: auto;
  border-radius: var(--r-lg);
  transform: none;
  opacity: 1;
  pointer-events: auto;
  box-shadow: none;
  border: 1px solid var(--bb-ink-200);
}

@media (max-width: 520px) {
  .chat-window {
    bottom: calc(var(--sp-4) + 72px);
    right: var(--sp-4);
    left: var(--sp-4);
    width: auto;
    height: calc(100vh - 120px);
    border-radius: var(--r-lg);
  }
  .chat-fab {
    right: var(--sp-4);
    bottom: var(--sp-4);
  }
}