/* ── AI button — lives inside the nav bar ── */
.chat-fab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
  padding: 0.35rem 0.7rem 0.35rem 0.4rem;
  border: 1px solid rgba(0, 255, 204, 0.3);
  border-radius: 999px;
  cursor: pointer;
  background: rgba(0, 255, 204, 0.06);
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.chat-fab:hover,
.chat-fab.is-open {
  border-color: rgba(0, 255, 204, 0.5);
  background: rgba(0, 255, 204, 0.12);
}

.chat-fab:hover {
  transform: translateY(-1px);
}

.chat-fab-icon-wrap {
  position: relative;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.chat-fab-glow {
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: conic-gradient(from 180deg, var(--teal), var(--purple), var(--blue), var(--teal));
  opacity: 0.4;
  animation: ai-spin 4s linear infinite;
  z-index: -1;
}

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

.chat-fab-icon {
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: #041018;
}

.chat-fab-icon svg {
  width: 0.95rem;
  height: 0.95rem;
}

.chat-fab-label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
  text-align: left;
}

.chat-fab-label strong {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--teal);
}

.chat-fab-label span {
  font-size: 0.62rem;
  color: var(--text-muted);
  font-family: var(--mono);
}

.chat-fab[hidden],
.chat-panel[hidden],
.chat-backdrop[hidden] {
  display: none !important;
}

/* ── Backdrop ── */
.chat-backdrop {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(4, 6, 14, 0.5);
  backdrop-filter: blur(2px);
}

/* ── Chat panel — fixed below nav, constrained to viewport ── */
.chat-panel {
  position: fixed;
  top: calc(var(--nav-height, 76px) + 0.5rem);
  right: max(1rem, env(safe-area-inset-right));
  z-index: 151;
  width: min(360px, calc(100vw - 2rem));
  max-height: calc(100dvh - var(--nav-height, 76px) - 1.25rem);
  flex-direction: column;
  background: linear-gradient(165deg, rgba(14, 14, 32, 0.98), rgba(20, 16, 40, 0.98));
  border: 1px solid rgba(192, 132, 252, 0.28);
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(14px);
  overflow: hidden;
  transform-origin: top right;
}

.chat-panel:not([hidden]) {
  display: flex;
  animation: chat-drop 0.22s ease-out;
}

@keyframes chat-drop {
  from { opacity: 0; transform: translateY(-8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── Header ── */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(135deg, rgba(0, 255, 204, 0.08), rgba(192, 132, 252, 0.08));
  flex-shrink: 0;
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.chat-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

.chat-avatar-ring {
  position: absolute;
  inset: -3px;
  border-radius: 12px;
  background: conic-gradient(from 0deg, var(--teal), var(--purple), var(--blue), var(--teal));
  opacity: 0.5;
  animation: ai-spin 5s linear infinite;
}

.chat-avatar {
  position: relative;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--teal), var(--purple));
  color: #041018;
}

.chat-avatar svg {
  width: 1.1rem;
  height: 1.1rem;
}

.chat-header h3 {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
}

.chat-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.58rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--teal);
  margin-bottom: 0.1rem;
}

.chat-header-badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 5px var(--green);
}

.chat-header p {
  margin: 0.1rem 0 0;
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-header-actions {
  display: flex;
  gap: 0.3rem;
  flex-shrink: 0;
}

.chat-icon-btn {
  width: 2rem;
  height: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color 0.15s, border-color 0.15s;
}

.chat-icon-btn:hover,
.chat-icon-btn.active {
  color: var(--teal);
  border-color: rgba(0, 255, 204, 0.35);
}

/* ── Messages ── */
.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.chat-welcome {
  text-align: center;
  padding: 0.75rem 0.5rem 0.25rem;
}

.chat-welcome-orb {
  width: 2.75rem;
  height: 2.75rem;
  margin: 0 auto 0.75rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 255, 204, 0.15), rgba(192, 132, 252, 0.15));
  display: grid;
  place-items: center;
}

.chat-welcome-orb svg {
  width: 1.2rem;
  height: 1.2rem;
  color: var(--teal);
}

.chat-welcome h4 {
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
}

.chat-welcome p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.chat-msg {
  max-width: 92%;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
  font-size: 0.85rem;
  line-height: 1.45;
}

.chat-msg-bot {
  align-self: flex-start;
  background: rgba(96, 165, 250, 0.1);
  border: 1px solid rgba(96, 165, 250, 0.2);
  border-bottom-left-radius: 4px;
}

.chat-msg-user {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(0, 255, 204, 0.14), rgba(96, 165, 250, 0.1));
  border: 1px solid rgba(0, 255, 204, 0.25);
  border-bottom-right-radius: 4px;
}

.chat-msg-typing {
  align-self: flex-start;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.35rem 0;
}

.chat-msg-typing span {
  animation: typing-dot 1.2s infinite;
}

.chat-msg-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-msg-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-dot {
  0%, 60%, 100% { opacity: 0.3; }
  30% { opacity: 1; }
}

.chat-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.45rem;
}

.chat-action-btn {
  border: 1px solid rgba(0, 255, 204, 0.28);
  background: rgba(0, 255, 204, 0.07);
  color: var(--teal);
  border-radius: 999px;
  padding: 0.28rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.chat-action-btn:hover {
  background: rgba(0, 255, 204, 0.15);
}

.chat-suggestions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  padding: 0 1rem 0.5rem;
  justify-content: center;
  flex-shrink: 0;
}

.chat-suggestion {
  border: 1px solid rgba(192, 132, 252, 0.28);
  background: rgba(192, 132, 252, 0.07);
  color: var(--purple);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.72rem;
  cursor: pointer;
}

.chat-suggestion:hover {
  background: rgba(192, 132, 252, 0.15);
}

.chat-voice-hint {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0 1rem 0.2rem;
  flex-shrink: 0;
}

.chat-status {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0 1rem 0.25rem;
  min-height: 0.85rem;
  font-family: var(--mono);
  flex-shrink: 0;
}

.chat-input-row {
  display: flex;
  gap: 0.45rem;
  padding: 0.7rem 1rem 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
}

.chat-input-row input {
  flex: 1;
  min-width: 0;
  padding: 0.6rem 0.85rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
}

.chat-input-row input:focus {
  outline: none;
  border-color: rgba(0, 255, 204, 0.4);
}

.chat-send,
.chat-mic {
  width: 2.4rem;
  height: 2.4rem;
  border: none;
  border-radius: 11px;
  cursor: pointer;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.chat-send {
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: #041018;
}

.chat-mic {
  background: rgba(192, 132, 252, 0.12);
  color: var(--purple);
  border: 1px solid rgba(192, 132, 252, 0.3);
}

.chat-mic.listening {
  background: rgba(248, 113, 113, 0.18);
  color: var(--red);
  border-color: rgba(248, 113, 113, 0.4);
}

/* ── Nav layout: AI button sits between links and actions ── */
.nav-inner .chat-fab {
  margin-left: auto;
  margin-right: 0.65rem;
}

@media (max-width: 900px) {
  .nav-inner .chat-fab {
    margin-left: auto;
    margin-right: 0.5rem;
    order: 1;
  }

  .nav-toggle {
    order: 2;
  }

  .chat-fab-label span {
    display: none;
  }

  .chat-panel {
    top: calc(var(--nav-height, 64px) + 0.4rem);
    right: 0.75rem;
    left: 0.75rem;
    width: auto;
    max-height: calc(100dvh - var(--nav-height, 64px) - 0.85rem);
  }

  .chat-header p {
    white-space: normal;
  }
}

@media (min-width: 901px) {
  .nav-inner .chat-fab {
    order: 0;
    margin-left: 0;
    margin-right: 0.75rem;
  }
}