:root {
  --pz-assistant-bg: #0a1628;
  --pz-assistant-card: rgba(13,33,55,0.95);
  --pz-assistant-accent: #00f5d4;
  --pz-assistant-text: #d4e5d9;
  --pz-assistant-muted: #8ab8a8;
  --pz-assistant-shadow: 0 8px 32px rgba(0,245,212,0.18);
}

.pz-assistant-float {
  position: fixed;
  pointer-events: auto;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--pz-assistant-card);
  border: 2px solid var(--pz-assistant-accent);
  box-shadow: var(--pz-assistant-shadow);
  cursor: pointer;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  line-height: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: pz-float 4s ease-in-out infinite;
}

.pz-assistant-float:hover,
.pz-assistant-float:focus {
  transform: scale(1.08);
  box-shadow: 0 12px 40px rgba(0,245,212,0.28);
  outline: none;
}

.pz-assistant-float[aria-expanded="true"] {
  animation: none;
}

@keyframes pz-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.pz-assistant-chat {
  position: fixed;
  pointer-events: auto;
  bottom: 92px;
  right: 10px;
  left: auto;
  width: min(360px, calc(100% - 20px));
  max-width: calc(100% - 20px);
  max-height: calc(100vh - 120px);
  background: var(--pz-assistant-card);
  border: 1px solid rgba(0,245,212,0.25);
  border-radius: 16px;
  box-shadow: var(--pz-assistant-shadow);
  z-index: 9999;
  display: none;
  flex-direction: column;
  overflow: hidden;
  backdrop-filter: blur(8px);
  box-sizing: border-box;
}

.pz-assistant-chat.open {
  display: flex;
}

.pz-assistant-header {
  padding: 16px;
  background: rgba(0,245,212,0.08);
  border-bottom: 1px solid rgba(0,245,212,0.15);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pz-assistant-avatar {
  font-size: 22px;
  line-height: 1;
}

.pz-assistant-title {
  flex: 1;
  color: var(--pz-assistant-accent);
  font-weight: 600;
  font-size: 1.05em;
}

.pz-assistant-close {
  background: transparent;
  border: none;
  color: var(--pz-assistant-muted);
  font-size: 22px;
  cursor: pointer;
  padding: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}

.pz-assistant-close:hover,
.pz-assistant-close:focus {
  color: var(--pz-assistant-accent);
  background: rgba(0,245,212,0.1);
  outline: none;
}

.pz-assistant-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 260px;
}

.pz-assistant-bubble {
  max-width: 85%;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 0.95em;
  line-height: 1.5;
  word-wrap: break-word;
}

.pz-assistant-bubble.bot {
  align-self: flex-start;
  background: rgba(0,245,212,0.08);
  color: var(--pz-assistant-text);
  border: 1px solid rgba(0,245,212,0.15);
  border-bottom-left-radius: 4px;
}

.pz-assistant-bubble.user {
  align-self: flex-end;
  background: rgba(0,245,212,0.18);
  color: var(--pz-assistant-text);
  border: 1px solid rgba(0,245,212,0.25);
  border-bottom-right-radius: 4px;
}

.pz-assistant-bubble a {
  color: var(--pz-assistant-accent);
  text-decoration: underline;
  font-weight: 500;
}

.pz-assistant-bubble a:hover {
  text-decoration: none;
}

.pz-assistant-bubble ul {
  margin: 8px 0;
  padding-left: 18px;
}

.pz-assistant-bubble li {
  margin-bottom: 6px;
}

.pz-assistant-suggestions {
  padding: 0 16px 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pz-assistant-chip {
  background: rgba(0,245,212,0.08);
  border: 1px solid rgba(0,245,212,0.2);
  color: var(--pz-assistant-text);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85em;
  cursor: pointer;
  transition: background 0.15s ease;
}

.pz-assistant-chip:hover,
.pz-assistant-chip:focus {
  background: rgba(0,245,212,0.18);
  outline: none;
}

.pz-assistant-input-area {
  padding: 12px 16px 16px;
  border-top: 1px solid rgba(0,245,212,0.15);
  display: flex;
  gap: 8px;
}

.pz-assistant-input {
  flex: 1;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(0,245,212,0.25);
  background: rgba(10,22,40,0.7);
  color: var(--pz-assistant-text);
  font-size: 0.95em;
}

.pz-assistant-input::placeholder {
  color: var(--pz-assistant-muted);
}

.pz-assistant-input:focus {
  outline: none;
  border-color: var(--pz-assistant-accent);
  box-shadow: 0 0 0 2px rgba(0,245,212,0.15);
}

.pz-assistant-send {
  background: var(--pz-assistant-accent);
  color: #0a1628;
  border: none;
  border-radius: 12px;
  padding: 0 16px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease;
}

.pz-assistant-send:hover,
.pz-assistant-send:focus {
  filter: brightness(1.1);
  outline: none;
}

@media (max-width: 768px) {
  .pz-assistant-float {
    width: 48px;
    height: 48px;
    font-size: 24px;
    right: 14px;
    bottom: 14px;
  }
  .pz-assistant-chat {
    right: 8px;
    left: auto;
    bottom: 72px;
    width: calc(100% - 16px);
    max-width: calc(100% - 16px);
    max-height: calc(100vh - 100px);
    border-radius: 14px;
  }
  .pz-assistant-input-area {
    padding: 10px 12px 12px;
  }
  .pz-assistant-send {
    padding: 0 12px;
  }
  .pz-assistant-bubble {
    font-size: 0.92em;
    padding: 10px 12px;
  }
}

@media (max-width: 480px) {
  .pz-assistant-chat {
    width: calc(100vw - 24px);
    right: 12px;
    bottom: 72px;
  }
}