.ai-assistant-fab {
  position: fixed;
  right: calc(var(--space-lg) + 0.4rem);
  bottom: calc(var(--space-lg) + 5.6rem + var(--space-sm));
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.8rem;
  height: 4.8rem;
  color: var(--text-primary);
  border-radius: var(--radius-full);
  background: linear-gradient(
    135deg,
    rgb(var(--gradient-end-rgb)),
    rgb(var(--gradient-start-rgb))
  );
  box-shadow: 0 0.4rem 1.2rem rgba(var(--gradient-start-rgb), 0.3);
  z-index: 40;
  animation: ai-fab-glow 2.4s ease-in-out infinite;
  transition: transform 0.2s;
}

.ai-assistant-fab:active {
  transform: scale(1.1);
}

.ai-assistant-fab svg {
  width: 2.2rem;
  height: 2.2rem;
}


#ai-assistant-modal .modal-content {
  height: 78vh;
  max-height: 62rem;
}

.ai-modal-body {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  padding-right: 0;
}


.ai-chat {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--space-sm);
  min-height: 0;
  padding: var(--space-xxs) var(--space-lg) var(--space-xs) 0;
  overflow-y: auto;
}

.ai-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-xs);
  animation: ai-slide-up 0.25s ease both;
}

.ai-row-user {
  justify-content: flex-end;
}

.ai-row-assistant {
  justify-content: flex-start;
}

.ai-avatar {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 3.2rem;
  height: 3.2rem;
  color: var(--text-primary);
  border-radius: var(--radius-full);
  background: linear-gradient(
    135deg,
    rgb(var(--gradient-start-rgb)),
    rgb(var(--gradient-end-rgb))
  );
}

.ai-avatar svg {
  width: 1.7rem;
  height: 1.7rem;
}

.ai-avatar-active {
  animation: ai-breathe 1.1s ease-in-out infinite;
}

.ai-bubble {
  max-width: 76%;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-lg);
  font-size: var(--font-sm);
  line-height: var(--lh-md);
  animation: ai-slide-up 0.25s ease both;
}

.ai-bubble-assistant {
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-bottom-left-radius: var(--radius-xs);
}

.ai-bubble-user {
  color: var(--text-primary);
  background: linear-gradient(
    135deg,
    rgba(var(--gradient-start-rgb), 0.22),
    rgba(var(--gradient-end-rgb), 0.08)
  );
  border: 1px solid rgba(var(--gradient-start-rgb), 0.25);
  border-bottom-right-radius: var(--radius-xs);
}


.ai-typing-dots {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: var(--space-xs) var(--space-sm);
}

.ai-typing-dots span {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: var(--radius-full);
  background: var(--text-muted);
  animation: ai-typing-bounce 1.1s ease-in-out infinite;
}

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

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


.ai-system-row {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-left: calc(3.2rem + var(--space-xs));
  padding: var(--space-xxs) var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  font-size: var(--font-xs);
  color: var(--text-muted);
  animation: ai-slide-up 0.25s ease both;
}

.ai-system-row svg {
  flex-shrink: 0;
  width: var(--icon-sm);
  height: var(--icon-sm);
}

.ai-system-row.is-running svg {
  color: rgb(var(--gradient-start-rgb));
  animation: ai-spin 0.9s linear infinite;
}

.ai-system-row.is-done {
  border-color: rgba(var(--success-medium-rgb), 0.3);
}

.ai-system-row.is-done svg {
  color: var(--success-medium);
}

.ai-system-row.is-error {
  color: var(--text-secondary);
  border-color: rgba(var(--danger-medium-rgb), 0.3);
}

.ai-system-row.is-error svg {
  color: var(--danger-medium);
}

.ai-system-row.is-cancelled {
  color: var(--text-muted);
}

.ai-system-row.is-cancelled svg {
  color: var(--text-muted);
}

.ai-retry-btn {
  flex-shrink: 0;
  margin-left: auto;
  padding: 0.2rem 0.7rem;
  color: rgb(var(--gradient-start-rgb));
  background: transparent;
  border: 1px solid rgba(var(--gradient-start-rgb), 0.4);
  border-radius: var(--radius-sm);
  font-size: var(--font-xxs);
  font-weight: 600;
  transition: background 0.2s ease;
}

.ai-retry-btn:active {
  background: rgba(var(--gradient-start-rgb), 0.15);
}

.ai-retry-btn:disabled {
  opacity: 0.5;
  pointer-events: none;
}


.ai-listening-bar {
  display: none;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  margin: var(--space-xs) var(--space-lg) 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  animation: ai-slide-up 0.25s ease both;
}

.ai-modal-content.state-listening .ai-listening-bar {
  display: flex;
}

.ai-mic-indicator {
  position: relative;
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 3.6rem;
  height: 3.6rem;
  color: var(--text-primary);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--danger-medium), var(--danger-dark));
  animation: ai-mic-glow 1.2s ease-in-out infinite;
}

.ai-mic-indicator svg {
  width: 1.7rem;
  height: 1.7rem;
}

.ai-listening-waveform {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 0.3rem;
  height: 1.8rem;
}

.ai-listening-waveform span {
  width: 0.3rem;
  height: 100%;
  border-radius: var(--radius-full);
  background: rgb(var(--gradient-start-rgb));
  animation: ai-wave-bounce 0.9s ease-in-out infinite;
  transform: scaleY(0.3);
}

.ai-listening-waveform span:nth-child(1) {
  animation-delay: 0s;
}
.ai-listening-waveform span:nth-child(2) {
  animation-delay: 0.1s;
}
.ai-listening-waveform span:nth-child(3) {
  animation-delay: 0.2s;
}
.ai-listening-waveform span:nth-child(4) {
  animation-delay: 0.3s;
}
.ai-listening-waveform span:nth-child(5) {
  animation-delay: 0.15s;
}

.ai-listening-transcript {
  flex: 1;
  overflow: hidden;
  font-size: var(--font-xs);
  font-style: italic;
  color: var(--text-secondary);
  text-overflow: ellipsis;
  white-space: nowrap;
}


.ai-text-stage {
  display: none;
  margin: var(--space-xs) var(--space-lg) 0 0;
}

.ai-modal-content.mode-text .ai-text-stage {
  display: block;
}

.ai-textarea {
  min-height: 6rem;
}


.ai-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg) 0;
  margin-top: var(--space-xs);
  border-top: 1px solid var(--border);
}

.ai-mode-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xxs);
  padding: var(--space-xs) var(--space-sm);
  color: var(--text-muted);
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: var(--font-xs);
  transition:
    background 0.2s ease,
    opacity 0.2s ease;
}

.ai-mode-toggle:active {
  background: var(--bg-button-hover);
}

.ai-mode-toggle svg {
  width: var(--icon-sm);
  height: var(--icon-sm);
}

.ai-mic-button,
.ai-send-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 5.2rem;
  height: 5.2rem;
  margin-left: auto;
  color: var(--text-primary);
  border-radius: var(--radius-full);
  background: linear-gradient(
    135deg,
    rgb(var(--gradient-start-rgb)),
    rgb(var(--gradient-end-rgb))
  );
  box-shadow: 0 0.4rem 1.2rem rgba(var(--gradient-end-rgb), 0.3);
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    background 0.3s,
    opacity 0.2s;
}

.ai-mic-button:active,
.ai-send-button:active {
  transform: scale(1.08);
}

.ai-mic-button svg,
.ai-send-button svg {
  width: var(--icon-lg);
  height: var(--icon-lg);
}

.ai-mode-toggle:disabled,
.ai-mic-button:disabled,
.ai-send-button:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.ai-modal-content.mode-text .ai-mic-button {
  display: none;
}

.ai-modal-content.mode-voice .ai-send-button {
  display: none;
}

.ai-modal-content.state-listening .ai-mic-button {
  background: linear-gradient(135deg, var(--danger-medium), var(--danger-dark));
  animation: ai-mic-glow 1.2s ease-in-out infinite;
}

.ai-cancel-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 5.2rem;
  height: 5.2rem;
  margin-left: auto;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  transition:
    transform 0.2s,
    background 0.2s;
}

.ai-cancel-button:active {
  background: var(--bg-button-hover);
  transform: scale(1.08);
}

.ai-cancel-button svg {
  width: var(--icon-lg);
  height: var(--icon-lg);
}

.ai-modal-content.state-busy .ai-cancel-button {
  display: flex;
}

.ai-modal-content.state-busy .ai-mic-button,
.ai-modal-content.state-busy .ai-send-button {
  display: none;
}


@keyframes ai-fab-glow {
  0%,
  100% {
    box-shadow: 0 0.4rem 1.2rem rgba(var(--gradient-start-rgb), 0.3);
  }
  50% {
    box-shadow: 0 0.4rem 2rem rgba(var(--gradient-end-rgb), 0.6);
  }
}

@keyframes ai-mic-glow {
  0%,
  100% {
    box-shadow: 0 0.4rem 1.2rem rgba(var(--danger-medium-rgb), 0.3);
  }
  50% {
    box-shadow: 0 0.4rem 1.6rem rgba(var(--danger-medium-rgb), 0.6);
  }
}

@keyframes ai-breathe {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

@keyframes ai-wave-bounce {
  0%,
  100% {
    transform: scaleY(0.3);
  }
  50% {
    transform: scaleY(1);
  }
}

@keyframes ai-typing-bounce {
  0%,
  60%,
  100% {
    transform: translateY(0);
    opacity: 0.5;
  }
  30% {
    transform: translateY(-0.35rem);
    opacity: 1;
  }
}

@keyframes ai-slide-up {
  from {
    opacity: 0;
    transform: translateY(0.6rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ai-spin {
  to {
    transform: rotate(360deg);
  }
}