#tn-support-root {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2147483100;
}

#tn-support-root .tn-support-fab,
#tn-support-root .tn-support-panel,
#tn-support-root .tn-support-toast {
  pointer-events: auto;
}

.tn-support-fab {
  position: fixed;
  right: 20px;
  bottom: 24px;
  min-width: 56px;
  height: 56px;
  padding: 0 18px 0 14px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #0f766e, #0e7490);
  color: #fff;
  box-shadow: 0 12px 32px rgba(15, 118, 110, 0.38);
  cursor: pointer;
  z-index: 2147483100;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: 700 0.88rem/1 Inter, system-ui, sans-serif;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.tn-support-fab.is-hidden {
  display: none !important;
}

.tn-support-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(15, 118, 110, 0.45);
}

.tn-support-fab svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.tn-support-fab-label {
  white-space: nowrap;
}

.tn-support-fab.has-unread {
  animation: tn-support-pulse 2s ease-in-out infinite;
}

@keyframes tn-support-pulse {
  0%,
  100% {
    box-shadow: 0 12px 32px rgba(15, 118, 110, 0.38), 0 0 0 0 rgba(239, 68, 68, 0.45);
  }
  50% {
    box-shadow: 0 16px 36px rgba(15, 118, 110, 0.45), 0 0 0 6px rgba(239, 68, 68, 0);
  }
}

.tn-support-unread-banner {
  background: #fef3c7;
  border-bottom: 1px solid #fcd34d;
  color: #78350f;
  font: 500 0.8rem/1.4 Inter, system-ui, sans-serif;
}

.tn-support-unread-banner-inner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
}

.tn-support-unread-icon {
  color: #ef4444;
  font-size: 0.65rem;
  margin-top: 4px;
  flex-shrink: 0;
}

.tn-support-unread-banner strong {
  display: block;
  font-weight: 700;
  margin-bottom: 2px;
}

.tn-support-unread-dismiss {
  margin-left: auto;
  border: 0;
  background: transparent;
  color: #92400e;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
  flex-shrink: 0;
}

.tn-support-toast {
  position: fixed;
  right: 20px;
  bottom: 92px;
  width: min(320px, calc(100vw - 32px));
  padding: 14px 16px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid #e2e8f0;
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.18);
  z-index: 2147483102;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.tn-support-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.tn-support-toast-source {
  font: 700 0.72rem/1.2 Inter, system-ui, sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #0d9488;
  margin-bottom: 4px;
}

.tn-support-toast-msg {
  font: 600 0.88rem/1.4 Inter, system-ui, sans-serif;
  color: #0f172a;
}

.tn-support-toast-preview {
  display: block;
  margin-top: 4px;
  font: 500 0.78rem/1.4 Inter, system-ui, sans-serif;
  color: #64748b;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tn-support-toast-open {
  margin-top: 10px;
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  background: linear-gradient(135deg, #0d9488, #0891b2);
  color: #fff;
  font: 700 0.78rem/1 Inter, system-ui, sans-serif;
  cursor: pointer;
}

.tn-support-fab-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: 999px;
  background: #ef4444;
  color: #fff;
  font: 700 11px/20px Inter, system-ui, sans-serif;
  text-align: center;
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
}

.tn-support-fab-badge.is-visible {
  display: inline-flex;
}

.tn-support-panel {
  position: fixed;
  right: 20px;
  bottom: 92px;
  width: min(380px, calc(100vw - 32px));
  height: min(560px, calc(100vh - 120px));
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.22);
  z-index: 2147483101;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.25);
  animation: tn-support-slide 0.24s ease;
}

@keyframes tn-support-slide {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.tn-support-head {
  padding: 16px 16px 14px;
  background: linear-gradient(135deg, #0f766e, #0e7490);
  color: #ecfeff;
}

.tn-support-head-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.tn-support-agent {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tn-support-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  display: grid;
  place-items: center;
  font: 800 14px/1 Inter, system-ui, sans-serif;
}

.tn-support-agent-name {
  font: 700 0.95rem/1.2 Inter, system-ui, sans-serif;
}

.tn-support-agent-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font: 500 0.75rem/1.2 Inter, system-ui, sans-serif;
  opacity: 0.92;
  margin-top: 2px;
}

.tn-support-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.25);
}

.tn-support-close {
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.tn-support-subtitle {
  margin-top: 10px;
  font: 500 0.82rem/1.45 Inter, system-ui, sans-serif;
  opacity: 0.95;
}

.tn-support-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 14px 8px;
  background: #f8fafc;
}

.tn-support-intro {
  padding: 12px 14px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #e2e8f0;
  font: 500 0.82rem/1.5 Inter, system-ui, sans-serif;
  color: #475569;
  margin-bottom: 12px;
}

.tn-support-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 12px;
}

.tn-support-form label {
  font: 700 0.72rem/1 Inter, system-ui, sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #64748b;
}

.tn-support-form input,
.tn-support-form textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}

.tn-support-form textarea {
  min-height: 72px;
  resize: vertical;
}

.tn-support-msg {
  display: flex;
  margin-bottom: 10px;
}

.tn-support-msg.is-user {
  justify-content: flex-end;
}

.tn-support-msg.is-admin {
  justify-content: flex-start;
}

.tn-support-bubble {
  max-width: 85%;
  padding: 10px 12px;
  border-radius: 14px;
  font: 500 0.875rem/1.45 Inter, system-ui, sans-serif;
  white-space: pre-wrap;
  word-break: break-word;
}

.tn-support-msg.is-user .tn-support-bubble {
  background: linear-gradient(135deg, #0d9488, #0891b2);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.tn-support-msg.is-admin .tn-support-bubble {
  background: #fff;
  color: #0f172a;
  border: 1px solid #e2e8f0;
  border-bottom-left-radius: 4px;
}

.tn-support-bubble-meta {
  font: 600 0.68rem/1.2 Inter, system-ui, sans-serif;
  opacity: 0.72;
  margin-bottom: 4px;
}

.tn-support-typing {
  display: flex;
  gap: 4px;
  padding: 10px 12px;
}

.tn-support-typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #94a3b8;
  animation: tn-support-bounce 1.2s infinite ease-in-out;
}

.tn-support-typing span:nth-child(2) {
  animation-delay: 0.15s;
}

.tn-support-typing span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes tn-support-bounce {
  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.45;
  }
  40% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

.tn-support-foot {
  padding: 12px 14px 14px;
  border-top: 1px solid #e2e8f0;
  background: #fff;
}

.tn-support-compose {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.tn-support-compose textarea {
  flex: 1;
  min-height: 42px;
  max-height: 120px;
  resize: none;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
}

.tn-support-send {
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #0d9488, #0891b2);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.tn-support-send:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.tn-support-err {
  margin-top: 8px;
  font: 600 0.78rem/1.4 Inter, system-ui, sans-serif;
  color: #b91c1c;
}

.tn-support-auth-hint {
  margin-top: 10px;
  font: 500 0.78rem/1.45 Inter, system-ui, sans-serif;
  color: #64748b;
  text-align: center;
}

.tn-support-auth-hint a {
  color: #0d9488;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 900px) {
  .tn-support-fab {
    bottom: calc(74px + env(safe-area-inset-bottom, 0px) + 10px);
    right: 14px;
    height: 52px;
    padding: 0 14px 0 12px;
    z-index: 2147483100;
  }

  .tn-support-fab-label {
    font-size: 0.82rem;
  }

  .tn-support-panel {
    right: 0;
    bottom: 0;
    width: 100vw;
    width: 100dvw;
    height: min(100vh, 100dvh);
    border-radius: 18px 18px 0 0;
    z-index: 2147483101;
  }

  body.page-dashboard .tn-support-fab {
    bottom: calc(68px + env(safe-area-inset-bottom, 0px) + 10px);
  }

  .tn-support-toast {
    right: 14px;
    bottom: calc(74px + env(safe-area-inset-bottom, 0px) + 72px);
    z-index: 2147483102;
  }
}

@media (max-width: 640px) {
  .tn-support-toast {
    bottom: calc(74px + env(safe-area-inset-bottom, 0px) + 68px);
  }
}