/* Portfolio floating chat */
.chat-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100000;
  background: rgba(5, 5, 16, 0.65);
  backdrop-filter: blur(4px);
  display: none;
}

.chat-backdrop.is-open {
  display: block;
}

.chat-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 5.75rem;
  z-index: 100001;
  width: min(400px, calc(100vw - 2.5rem));
  display: none;
  flex-direction: column;
  max-height: calc(100dvh - 7rem);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --chat-p: var(--p, #00f5ff);
  --chat-s: var(--s, #bf00ff);
  --chat-a: var(--a, #39ff14);
  --chat-bg: var(--bg, #050510);
  --chat-card: var(--card, #0a0a1a);
  --chat-bd: var(--bd, #1a1a3a);
  --chat-tx: var(--tx, #e0e0ff);
  --chat-mu: var(--mu, #6677aa);
}

.chat-panel.is-open {
  display: flex;
}

.chat-wrap {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  height: min(560px, calc(100dvh - 7rem));
  background: var(--chat-card);
  border: 1px solid var(--chat-bd);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55), 0 0 40px rgba(0, 245, 255, 0.12);
}

[data-theme="light"] .chat-wrap {
  box-shadow: 0 20px 50px rgba(40, 52, 196, 0.2);
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--chat-bd);
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.08), rgba(191, 0, 255, 0.05));
  flex-shrink: 0;
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
  flex: 1;
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--chat-p);
  background: var(--chat-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.chat-header h3 {
  margin: 0;
  font-size: 0.95rem;
  color: var(--chat-p);
  font-weight: 700;
}

.chat-header p {
  margin: 0;
  font-size: 0.75rem;
  color: var(--chat-mu);
}

.chat-status {
  font-size: 0.68rem;
  color: var(--chat-a);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.chat-status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--chat-a);
}

.chat-status.is-offline {
  color: var(--chat-mu);
}

.chat-status.is-offline::before {
  background: var(--chat-mu);
}

.chat-close {
  width: 34px;
  height: 34px;
  border: 1px solid var(--chat-bd);
  border-radius: 50%;
  background: var(--chat-bg);
  color: var(--chat-mu);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  flex-shrink: 0;
}

.chat-close:hover {
  border-color: var(--chat-p);
  color: var(--chat-p);
}

.chat-messages {
  flex: 1;
  min-height: 200px;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--chat-bg);
}

.chat-msg {
  display: flex;
  gap: 0.5rem;
  max-width: 92%;
}

.chat-msg.is-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  background: var(--chat-bd);
}

.chat-msg.is-user .chat-msg-avatar {
  border: 1px solid var(--chat-p);
  background: rgba(0, 245, 255, 0.1);
}

.chat-bubble {
  padding: 0.65rem 0.9rem;
  border-radius: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--chat-tx);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--chat-bd);
  word-break: break-word;
}

[data-theme="light"] .chat-bubble {
  background: #f8faff;
}

.chat-msg.is-user .chat-bubble {
  border-color: var(--chat-p);
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.14), rgba(191, 0, 255, 0.1));
}

.chat-bubble p {
  margin: 0.35rem 0;
}

.chat-bubble p.chat-md-heading {
  margin: 0.65rem 0 0.25rem;
  font-weight: 600;
  color: var(--chat-p);
}

.chat-bubble ul {
  margin: 0.35rem 0 0.35rem 1.1rem;
  padding-left: 0.5rem;
}

.chat-bubble li {
  margin: 0.2rem 0;
}

.chat-bubble code {
  background: rgba(0, 0, 0, 0.35);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

.chat-typing span {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 2px;
  border-radius: 50%;
  background: var(--chat-p);
  animation: chatDot 1.2s infinite;
}

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

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

@keyframes chatDot {
  0%, 80%, 100% { opacity: 0.3; }
  40% { opacity: 1; }
}

.chat-prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding: 0.5rem 0.85rem 0.65rem;
  flex-shrink: 0;
  transition: opacity 0.2s ease, max-height 0.25s ease, padding 0.25s ease;
  max-height: 120px;
  overflow: hidden;
}

.chat-prompts.is-hidden {
  display: none;
}

.chat-prompt {
  background: var(--chat-bg);
  border: 1px solid var(--chat-bd);
  color: var(--chat-mu);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  cursor: pointer;
}

.chat-prompt:hover {
  border-color: var(--chat-p);
  color: var(--chat-p);
}

.chat-input-wrap {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--chat-bd);
  background: var(--chat-card);
  flex-shrink: 0;
  align-items: flex-end;
}

.chat-input {
  flex: 1;
  min-height: 44px;
  max-height: 110px;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--chat-bd);
  border-radius: 12px;
  background: var(--chat-bg);
  color: var(--chat-tx);
  font: inherit;
  font-size: 0.88rem;
  resize: none;
}

.chat-input:focus {
  outline: none;
  border-color: var(--chat-p);
}

.chat-send {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--chat-p), var(--chat-s));
  color: #050510;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-send:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.chat-footer-note {
  margin: 0;
  padding: 0.4rem 0.75rem 0.55rem;
  text-align: center;
  font-size: 0.68rem;
  color: var(--chat-mu);
  border-top: 1px solid var(--chat-bd);
  flex-shrink: 0;
}

.chat-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 100002;
  width: 58px;
  height: 58px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--chat-p, #00f5ff), var(--chat-s, #bf00ff));
  color: #050510;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 28px rgba(0, 245, 255, 0.4);
}

.chat-fab.is-open {
  background: var(--chat-card, #0a0a1a);
  border: 2px solid var(--chat-p, #00f5ff);
  color: var(--chat-p, #00f5ff);
}

.chat-fab .fab-icon {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s, transform 0.2s;
}

.chat-fab .fab-icon-chat {
  opacity: 1;
  transform: scale(1);
}

.chat-fab .fab-icon-close {
  opacity: 0;
  transform: scale(0.5);
}

.chat-fab.is-open .fab-icon-chat {
  opacity: 0;
  transform: scale(0.5);
}

.chat-fab.is-open .fab-icon-close {
  opacity: 1;
  transform: scale(1);
}

.chat-open-btn {
  background: linear-gradient(135deg, var(--p), var(--s));
  border: none;
  border-radius: 12px;
  padding: 0.75rem 1.5rem;
  color: #050510;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
}

body.chat-is-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .chat-panel {
    right: max(0.5rem, env(safe-area-inset-right));
    left: max(0.5rem, env(safe-area-inset-left));
    width: auto;
    bottom: calc(4.75rem + env(safe-area-inset-bottom));
    max-height: calc(100dvh - 5.5rem - env(safe-area-inset-bottom));
  }

  .chat-wrap {
    height: min(520px, calc(100dvh - 5.5rem - env(safe-area-inset-bottom)));
  }

  .chat-fab {
    right: max(0.75rem, env(safe-area-inset-right));
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    width: 54px;
    height: 54px;
  }

  .chat-header h3 {
    font-size: 0.88rem;
  }

  .chat-prompts {
    max-height: 140px;
  }
}