/* ============================================================================
   Site assistant — floating launcher + conversation panel.
   ========================================================================== */

.chat {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 300;
  display: flex;
  /* Reversed so the launcher stays pinned at the bottom corner and the panel
     opens upward from it, the way a chat widget is expected to behave. */
  flex-direction: column-reverse;
  align-items: flex-end;
  gap: 0.85rem;
  pointer-events: none;
}

.chat > * {
  pointer-events: auto;
}

/* ------------------------------------------------------------- launcher -- */
.chat__launcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.72rem 1.15rem 0.72rem 0.85rem;
  border-radius: 99px;
  color: #05060c;
  background: var(--grad-primary);
  background-size: 180% auto;
  box-shadow: 0 14px 38px -12px rgba(124, 92, 255, 0.9);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  animation: shimmer 8s linear infinite;
  transition: transform 320ms var(--ease-spring), box-shadow 320ms var(--ease-out);
}

.chat__launcher:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 46px -12px rgba(124, 92, 255, 1);
}

.chat__launcher-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: none;
}

.chat__launcher-icon svg {
  position: absolute;
  width: 20px;
  height: 20px;
  transition: opacity 260ms ease, transform 320ms var(--ease-spring);
}

.chat__icon-close {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}

.chat.is-open .chat__icon-open {
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
}

.chat.is-open .chat__icon-close {
  opacity: 1;
  transform: none;
}

.chat.is-open .chat__launcher-label {
  display: none;
}

.chat.is-open .chat__launcher {
  padding: 0.8rem;
}

/* A single attention pulse, then it stops bothering you. */
.chat__ping {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid rgba(124, 92, 255, 0.65);
  animation: pulse-ring 2.4s var(--ease-out) 3;
  pointer-events: none;
}

.chat.is-open .chat__ping,
.chat.has-been-opened .chat__ping {
  display: none;
}

/* ---------------------------------------------------------------- panel -- */
.chat__panel {
  width: min(380px, calc(100vw - 2rem));
  max-height: min(560px, calc(100svh - 8rem));
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background: rgba(9, 11, 20, 0.9);
  backdrop-filter: blur(26px) saturate(160%);
  -webkit-backdrop-filter: blur(26px) saturate(160%);
  opacity: 0;
  transform: translateY(14px) scale(0.97);
  transform-origin: 100% 100%;
  transition: opacity 300ms var(--ease-out), transform 340ms var(--ease-spring);
  overflow: hidden;
}

.chat__panel[hidden] {
  display: none;
}

.chat.is-open .chat__panel {
  opacity: 1;
  transform: none;
}

.chat__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.95rem 1rem;
  border-bottom: 1px solid var(--glass-border);
  flex: none;
}

.chat__avatar {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 11px;
  background: var(--grad-primary);
  color: #06070e;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.chat__title {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.chat__title strong {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-1);
  letter-spacing: -0.02em;
}

.chat__title span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  color: var(--text-4);
}

.chat__close {
  margin-left: auto;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 9px;
  color: var(--text-3);
  border: 1px solid transparent;
  transition: color 240ms ease, background-color 240ms ease, border-color 240ms ease;
}

.chat__close:hover {
  color: var(--text-1);
  background: var(--glass-bg);
  border-color: var(--glass-border);
}

.chat__close svg {
  width: 15px;
  height: 15px;
}

/* ------------------------------------------------------------------ log -- */
.chat__log {
  flex: 1;
  min-height: 140px;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  scrollbar-width: thin;
}

.chat__log::-webkit-scrollbar {
  width: 6px;
}

.chat__log::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 99px;
  border: none;
}

.chat__log::-webkit-scrollbar-track {
  background: transparent;
}

.msg {
  max-width: 88%;
  padding: 0.7rem 0.9rem;
  border-radius: 15px;
  font-size: 0.855rem;
  line-height: 1.62;
  animation: msg-in 380ms var(--ease-out) both;
}

@keyframes msg-in {
  from { opacity: 0; transform: translateY(9px); }
  to { opacity: 1; transform: none; }
}

.msg--bot {
  align-self: flex-start;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-bottom-left-radius: 5px;
}

.msg--user {
  align-self: flex-end;
  color: #06070e;
  background: linear-gradient(120deg, var(--cyan), var(--violet-soft));
  border-bottom-right-radius: 5px;
  font-weight: 500;
}

.msg__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.65rem;
}

.msg__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.28rem 0.6rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  color: var(--cyan-soft);
  background: rgba(34, 211, 238, 0.09);
  border: 1px solid rgba(34, 211, 238, 0.24);
  transition: color 220ms ease, background-color 220ms ease, border-color 220ms ease;
  word-break: break-all;
}

.msg__link:hover {
  color: #06070e;
  background: var(--cyan);
  border-color: var(--cyan);
}

/* Typing indicator */
.msg--typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 0.85rem 0.9rem;
}

.msg--typing i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-3);
  animation: typing 1.15s ease-in-out infinite;
}

.msg--typing i:nth-child(2) { animation-delay: 0.16s; }
.msg--typing i:nth-child(3) { animation-delay: 0.32s; }

@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

/* ---------------------------------------------------------- suggestions -- */
.chat__suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0 1rem 0.75rem;
  flex: none;
}

.chat__suggestions:empty {
  display: none;
}

.chat__chip {
  padding: 0.38rem 0.72rem;
  border-radius: 99px;
  font-size: 0.745rem;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--glass-border);
  transition: color 220ms ease, border-color 220ms ease, background-color 220ms ease,
    transform 260ms var(--ease-spring);
  text-align: left;
}

.chat__chip:hover {
  color: var(--text-1);
  border-color: var(--glass-border-lit);
  background: var(--glass-bg-strong);
  transform: translateY(-2px);
}

/* ----------------------------------------------------------------- form -- */
.chat__form {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--glass-border);
  flex: none;
}

.chat__input {
  flex: 1;
  min-width: 0;
  padding: 0.68rem 0.9rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--glass-border);
  color: var(--text-1);
  font-size: 0.855rem;
  transition: border-color 240ms ease, box-shadow 240ms ease;
}

.chat__input::placeholder {
  color: var(--text-4);
}

.chat__input:focus {
  outline: none;
  border-color: rgba(124, 92, 255, 0.7);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.14);
}

.chat__send {
  display: grid;
  place-items: center;
  width: 42px;
  flex: none;
  border-radius: 12px;
  color: #06070e;
  background: var(--grad-primary);
  transition: transform 260ms var(--ease-spring), opacity 240ms ease;
}

.chat__send:hover {
  transform: scale(1.05);
}

.chat__send:disabled {
  opacity: 0.45;
  transform: none;
  cursor: not-allowed;
}

.chat__send svg {
  width: 17px;
  height: 17px;
}

.chat__note {
  padding: 0 1rem 0.9rem;
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--text-4);
  flex: none;
}

.chat__note a {
  color: var(--text-3);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.chat__note a:hover {
  color: var(--cyan);
}

/* --------------------------------------------------------------- mobile -- */
@media (max-width: 520px) {
  .chat {
    right: 0.85rem;
    bottom: 0.85rem;
    left: 0.85rem;
    align-items: stretch;
  }

  .chat__launcher {
    align-self: flex-end;
  }

  .chat__panel {
    width: 100%;
    max-height: min(72svh, 540px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat__ping {
    display: none;
  }
}