/* AlgoTree AI Advisor — global floating coach (site + platform) */
.ai-guide-root {
  --adv-emerald: #00e5a0;
  --adv-text: #e2e8f0;
  --adv-muted: #94a3b8;
  --adv-dim: #64748b;
  --adv-border: rgba(148, 163, 184, 0.15);
  --adv-bg: rgba(10, 14, 22, 0.98);
  --adv-glass: rgba(0, 0, 0, 0.25);
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 99999;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

.ai-guide-fab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid rgba(0, 229, 160, 0.4);
  border-radius: 100px;
  background: linear-gradient(135deg, rgba(0, 229, 160, 0.15) 0%, rgba(34, 211, 238, 0.1) 100%);
  color: var(--adv-text);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  transition: transform 0.2s, box-shadow 0.2s;
}

.ai-guide-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 229, 160, 0.15);
}

.ai-guide-fab.open { opacity: 0; pointer-events: none; }

.ai-fab-icon { font-size: 1rem; color: var(--adv-emerald); }

.ai-guide-panel {
  position: absolute;
  bottom: 0;
  right: 0;
  width: min(400px, calc(100vw - 2rem));
  max-height: min(560px, calc(100vh - 2rem));
  display: flex;
  flex-direction: column;
  background: var(--adv-bg);
  border: 1px solid var(--adv-border);
  border-radius: 12px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.96);
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
}

.ai-guide-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.ai-guide-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--adv-border);
  background: linear-gradient(180deg, rgba(0, 229, 160, 0.06) 0%, transparent 100%);
}

.ai-guide-header strong { display: block; font-size: 0.9rem; margin-bottom: 0.15rem; color: var(--adv-text); }
.ai-guide-header span { font-size: 0.72rem; color: var(--adv-dim); }
.ai-engine-badge {
  display: inline-block;
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--adv-emerald);
  margin-top: 0.2rem;
}

.ai-guide-close {
  background: none;
  border: none;
  color: var(--adv-muted);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.ai-guide-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 220px;
  max-height: 300px;
}

.ai-msg { display: flex; flex-direction: column; gap: 0.35rem; }
.ai-msg-user { align-items: flex-end; }

.ai-msg-bubble {
  max-width: 92%;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--adv-text);
}

.ai-msg-bubble strong { color: var(--adv-emerald); font-weight: 700; }
.ai-msg-bubble code {
  background: rgba(0, 0, 0, 0.35);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.78rem;
}

.ai-msg-bot .ai-msg-bubble {
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.15);
}

.ai-msg-user .ai-msg-bubble {
  background: var(--adv-glass);
  border: 1px solid var(--adv-border);
  color: var(--adv-muted);
}

.ai-msg-typing .ai-msg-bubble {
  opacity: 0.7;
  font-style: italic;
}

.ai-advisor-disclaimer {
  font-size: 0.62rem;
  color: var(--adv-dim);
  padding: 0 1rem 0.5rem;
  line-height: 1.4;
}

.ai-guide-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0 1rem 0.75rem;
}

.ai-chip {
  padding: 0.3rem 0.6rem;
  font-size: 0.68rem;
  border-radius: 100px;
  border: 1px solid var(--adv-border);
  background: var(--adv-glass);
  color: var(--adv-muted);
  cursor: pointer;
}

.ai-chip:hover {
  border-color: rgba(0, 229, 160, 0.35);
  color: var(--adv-emerald);
}

.ai-guide-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1rem 1rem;
  border-top: 1px solid var(--adv-border);
}

.ai-guide-form input {
  flex: 1;
  padding: 0.55rem 0.75rem;
  font-size: 0.8rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--adv-border);
  border-radius: 8px;
  color: var(--adv-text);
}

.ai-guide-form input:focus {
  outline: none;
  border-color: rgba(0, 229, 160, 0.4);
}

.ai-guide-form button {
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  border: none;
  background: var(--adv-emerald);
  color: #0a0e16;
  font-weight: 700;
  font-size: 0.78rem;
  cursor: pointer;
}

.ai-guide-form button:disabled {
  opacity: 0.5;
  cursor: wait;
}