/* NevaBridge Support Chat widget. */

:where(.nevabridge-support-chat) {
  --nevabridge-color-accent: #1e1e1e;
  --nevabridge-color-on-accent: #fff;
  --nevabridge-color-surface: #fff;
  --nevabridge-color-surface-subtle: #f6f7f7;
  --nevabridge-color-text: #1e1e1e;
  --nevabridge-color-text-muted: #50575e;
  --nevabridge-color-border: #767676;
  --nevabridge-color-focus: #3858e9;
  --nevabridge-color-status: #008a20;
  --nevabridge-font-family: inherit;
  --nevabridge-font-size: 1rem;
  --nevabridge-line-height: 1.5;
  --nevabridge-radius-panel: 0.75rem;
  --nevabridge-radius-card: 0.5rem;
  --nevabridge-radius-control: 0.5rem;
  --nevabridge-radius-bubble: 0.625rem;
  --nevabridge-radius-toggle: 999px;
  --nevabridge-shadow-panel: 0 8px 40px rgba(0, 0, 0, 0.16);
  --nevabridge-shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05);
  --nevabridge-shadow-toggle: 0 6px 18px rgba(0, 0, 0, 0.18);
  --nevabridge-panel-width: 25rem;
  --nevabridge-panel-height: 35rem;
  --nevabridge-gutter: 1.625rem;
}

.nevabridge-support-chat {
  box-sizing: border-box;
  color: var(--nevabridge-color-text);
  font-family: var(--nevabridge-font-family);
  font-size: var(--nevabridge-font-size);
  font-weight: 400;
  line-height: var(--nevabridge-line-height);
  -webkit-font-smoothing: antialiased;
}

.nevabridge-support-chat *,
.nevabridge-support-chat *::before,
.nevabridge-support-chat *::after {
  box-sizing: inherit;
}

.nevabridge-support-chat p {
  margin: 0;
}

.nevabridge-support-chat :where(button) {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.nevabridge-support-chat :where([hidden]) {
  display: none !important;
}

.nevabridge-support-chat__sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Panel shell */

.nevabridge-support-chat__panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--nevabridge-radius-panel);
  background: var(--nevabridge-color-surface);
}

.nevabridge-support-chat--inline .nevabridge-support-chat__panel {
  width: 100%;
  height: var(--nevabridge-panel-height);
  border: 1px solid var(--nevabridge-color-border);
  box-shadow: var(--nevabridge-shadow-card);
}

.nevabridge-support-chat--floating .nevabridge-support-chat__panel {
  position: fixed;
  bottom: calc(var(--nevabridge-gutter) + 72px);
  z-index: 59;
  width: min(var(--nevabridge-panel-width), calc(100vw - 2 * var(--nevabridge-gutter)));
  height: min(var(--nevabridge-panel-height), calc(100vh - 130px));
  box-shadow: var(--nevabridge-shadow-panel);
  animation: nevabridge-panel-in 0.2s ease-in-out;
}

.nevabridge-support-chat--bottom-right .nevabridge-support-chat__panel,
.nevabridge-support-chat--bottom-right .nevabridge-support-chat__toggle {
  right: var(--nevabridge-gutter);
}

.nevabridge-support-chat--bottom-left .nevabridge-support-chat__panel,
.nevabridge-support-chat--bottom-left .nevabridge-support-chat__toggle {
  left: var(--nevabridge-gutter);
}

@keyframes nevabridge-panel-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Floating toggle button */

.nevabridge-support-chat__toggle {
  position: fixed;
  bottom: var(--nevabridge-gutter);
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--nevabridge-radius-toggle);
  background: var(--nevabridge-color-accent);
  box-shadow: var(--nevabridge-shadow-toggle);
  color: var(--nevabridge-color-on-accent);
  transition: background-color 0.5s;
}

.nevabridge-support-chat__toggle:hover {
  opacity: 0.9;
}

.nevabridge-support-chat__toggle svg {
  display: block;
}

.nevabridge-support-chat__toggle .nevabridge-support-chat__icon-close,
.nevabridge-support-chat--open .nevabridge-support-chat__toggle .nevabridge-support-chat__icon-open {
  display: none;
}

.nevabridge-support-chat--open .nevabridge-support-chat__toggle .nevabridge-support-chat__icon-close {
  display: block;
}

/* Header */

.nevabridge-support-chat__header {
  display: flex;
  flex: none;
  align-items: center;
  gap: 12px;
  padding: 16px 18px 14px;
  border-bottom: 1px solid var(--nevabridge-color-border);
  background: var(--nevabridge-color-surface);
}

.nevabridge-support-chat__back {
  display: flex;
  padding: 2px;
  color: var(--nevabridge-color-text-muted);
}

.nevabridge-support-chat__back:hover {
  opacity: 0.8;
}

.nevabridge-support-chat__avatar,
.nevabridge-support-chat__bubble-avatar {
  flex: none;
  border-radius: var(--nevabridge-radius-toggle);
  object-fit: cover;
}

.nevabridge-support-chat__avatar--fallback,
.nevabridge-support-chat__bubble-avatar--fallback {
  display: block;
  background: var(--nevabridge-color-text);
  -webkit-mask: url('chat-avatar.svg') center / contain no-repeat;
  mask: url('chat-avatar.svg') center / contain no-repeat;
}

.nevabridge-support-chat__avatar {
  width: 30px;
  height: 30px;
}

.nevabridge-support-chat__identity {
  min-width: 0;
}

.nevabridge-support-chat__title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--nevabridge-color-text);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.2;
}

.nevabridge-support-chat__online {
  width: 8px;
  height: 8px;
  border-radius: var(--nevabridge-radius-toggle);
  background: var(--nevabridge-color-status);
}

.nevabridge-support-chat__subtitle {
  margin-top: 2px;
  color: var(--nevabridge-color-text-muted);
  font-size: 13px;
}

/* Home view */

.nevabridge-support-chat__home {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  background: var(--nevabridge-color-surface-subtle);
}

.nevabridge-support-chat__spacer {
  flex: 1;
  min-height: 0;
}

.nevabridge-support-chat__card-wrap {
  padding: 0 16px 10px;
}

.nevabridge-support-chat__card {
  padding: 16px 18px 14px;
  border: 1px solid var(--nevabridge-color-border);
  border-radius: var(--nevabridge-radius-card);
  background: var(--nevabridge-color-surface);
  box-shadow: var(--nevabridge-shadow-card);
}

.nevabridge-support-chat__card-title {
  color: var(--nevabridge-color-text);
  font-size: 16px;
}

.nevabridge-support-chat__card-text {
  margin-top: 6px;
  color: var(--nevabridge-color-text-muted);
  font-size: 15px;
}

.nevabridge-support-chat__start {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  color: var(--nevabridge-color-accent);
  font-size: 15px;
  transition: color 0.5s;
}

.nevabridge-support-chat__start:hover {
  opacity: 0.8;
}

.nevabridge-support-chat__powered {
  padding: 8px 0 12px;
  background: var(--nevabridge-color-surface);
  color: var(--nevabridge-color-text-muted);
  font-size: 12px;
  text-align: center;
}

/* Chat view */

.nevabridge-support-chat__chat {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  background: var(--nevabridge-color-surface);
}

.nevabridge-support-chat__messages {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
  padding: 22px 20px 8px;
  overflow-y: auto;
  background: var(--nevabridge-color-surface);
}

.nevabridge-support-chat__divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--nevabridge-color-text-muted);
  font-size: 14px;
}

.nevabridge-support-chat__divider::before,
.nevabridge-support-chat__divider::after {
  flex: 1;
  height: 1px;
  background: var(--nevabridge-color-border);
  content: '';
}

.nevabridge-support-chat__row--user {
  align-self: flex-end;
  max-width: 76%;
}

.nevabridge-support-chat__row--bot {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  max-width: 88%;
}

.nevabridge-support-chat__bubble-avatar {
  width: 26px;
  height: 26px;
}

.nevabridge-support-chat__bubble-column {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.nevabridge-support-chat__bubble {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 15px;
}

.nevabridge-support-chat__bubble--user {
  padding: 11px 15px;
  border-radius: var(--nevabridge-radius-bubble);
  background: var(--nevabridge-color-accent);
  color: var(--nevabridge-color-on-accent);
  line-height: 1.45;
}

.nevabridge-support-chat__bubble--bot {
  padding: 12px 15px;
  border: 1px solid var(--nevabridge-color-border);
  border-radius: var(--nevabridge-radius-bubble);
  background: var(--nevabridge-color-surface);
  box-shadow: var(--nevabridge-shadow-card);
  color: var(--nevabridge-color-text);
  line-height: 1.5;
  text-wrap: pretty;
}

.nevabridge-support-chat__bubble-label {
  color: var(--nevabridge-color-text-muted);
  font-size: 12px;
}

.nevabridge-support-chat__typing .nevabridge-support-chat__bubble {
  display: flex;
  gap: 5px;
  margin-left: 36px;
}

.nevabridge-support-chat__dot {
  width: 7px;
  height: 7px;
  border-radius: var(--nevabridge-radius-toggle);
  background: var(--nevabridge-color-text-muted);
  animation: nevabridge-dot 1.2s ease-in-out infinite;
}

.nevabridge-support-chat__dot:nth-child(2) {
  animation-delay: 0.2s;
}

.nevabridge-support-chat__dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes nevabridge-dot {
  0%,
  60%,
  100% {
    opacity: 0.35;
  }

  30% {
    opacity: 1;
  }
}

/* Composer */

.nevabridge-support-chat__form {
  flex: none;
  padding: 10px 16px 0;
  background: var(--nevabridge-color-surface);
}

.nevabridge-support-chat__input {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--nevabridge-color-accent);
  border-radius: var(--nevabridge-radius-control);
}

.nevabridge-support-chat__input textarea {
  display: block;
  flex: 1;
  width: 100%;
  height: 22px;
  min-height: 22px;
  max-height: 110px;
  margin: 0;
  padding: 0;
  overflow-y: hidden;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--nevabridge-color-text);
  font: inherit;
  font-size: 15px;
  line-height: 22px;
  resize: none;
}

.nevabridge-support-chat__input textarea::placeholder {
  color: var(--nevabridge-color-text-muted);
  opacity: 1;
}

.nevabridge-support-chat__input textarea:focus {
  outline: none;
  box-shadow: none;
}

.nevabridge-support-chat__send {
  display: flex;
  flex: none;
  padding: 1px 0;
  color: var(--nevabridge-color-accent);
}

.nevabridge-support-chat__send:hover {
  opacity: 0.8;
}

.nevabridge-support-chat__send:disabled {
  cursor: default;
  opacity: 0.5;
}

.nevabridge-support-chat__form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  column-gap: 14px;
  padding: 9px 0 12px;
}

.nevabridge-support-chat__form-footer .nevabridge-support-chat__powered {
  padding: 0;
}

.nevabridge-support-chat__finish {
  color: var(--nevabridge-color-text-muted);
  font-size: 12px;
  text-decoration: underline;
}

.nevabridge-support-chat__finish:hover {
  color: var(--nevabridge-color-text);
}

.nevabridge-support-chat__finish:disabled {
  cursor: default;
  opacity: 0.5;
}

.nevabridge-support-chat :focus-visible {
  outline: 3px solid var(--nevabridge-color-focus);
  outline-offset: 2px;
}

.nevabridge-support-chat__input:focus-within {
  outline: 3px solid var(--nevabridge-color-focus);
  outline-offset: 2px;
}

/* Small screens, per the design handoff */

@media (max-width: 479px) {
  :where(.nevabridge-support-chat) {
    --nevabridge-gutter: 0.75rem;
    --nevabridge-panel-height: calc(100vh - 100px - env(safe-area-inset-bottom, 0px));
    --nevabridge-panel-height: calc(100dvh - 100px - env(safe-area-inset-bottom, 0px));
  }

  .nevabridge-support-chat--floating .nevabridge-support-chat__panel {
    bottom: calc(var(--nevabridge-gutter) + 76px);
    height: min(var(--nevabridge-panel-height), calc(100dvh - 100px - env(safe-area-inset-bottom, 0px)));
  }

  .nevabridge-support-chat--inline .nevabridge-support-chat__panel {
    height: min(var(--nevabridge-panel-height), 80vh);
    min-height: min(30rem, var(--nevabridge-panel-height));
  }

  .nevabridge-support-chat__input textarea {
    /* 16px keeps iOS Safari from zooming into the field. */
    font-size: 16px;
  }
}

@supports (padding: env(safe-area-inset-bottom)) {
  .nevabridge-support-chat__toggle {
    bottom: calc(var(--nevabridge-gutter) + env(safe-area-inset-bottom));
  }

  .nevabridge-support-chat--floating .nevabridge-support-chat__panel {
    bottom: calc(var(--nevabridge-gutter) + 72px + env(safe-area-inset-bottom));
  }

  @media (max-width: 479px) {
    .nevabridge-support-chat--floating .nevabridge-support-chat__panel {
      bottom: calc(var(--nevabridge-gutter) + 76px + env(safe-area-inset-bottom));
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  .nevabridge-support-chat--floating .nevabridge-support-chat__panel,
  .nevabridge-support-chat__dot {
    animation: none;
  }
}