/* ══════════════════════════════════════════════
   AI Panel — Slide-in, Messages, Streaming
   ══════════════════════════════════════════════ */

/* ── Trigger Button (floating) ── */
.ai-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 4px 24px rgba(99,102,241,0.4);
  z-index: 1001;
  transition: all var(--duration-normal) var(--ease-spring);
}
.ai-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 32px rgba(99,102,241,0.55);
}
.ai-fab .ai-fab-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--success);
  border: 2px solid var(--eontra-black);
}

/* ── Overlay ── */
.ai-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
}
.ai-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Panel ── */
.ai-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 440px;
  max-width: 100vw;
  height: 100vh;
  background: var(--eontra-dark);
  border-left: 1px solid var(--eontra-border);
  z-index: 1200;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
}
.ai-panel.open {
  transform: translateX(0);
}

/* ── Header ── */
.ai-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--eontra-border);
  background: var(--eontra-surface);
  flex-shrink: 0;
}
.ai-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ai-header-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
}
.ai-header-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.ai-header-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.ai-header-actions {
  display: flex;
  gap: 4px;
}
.ai-header-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast);
}
.ai-header-btn:hover {
  background: var(--eontra-card);
  color: var(--text-primary);
}

/* ── Messages ── */
.ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ai-msg {
  display: flex;
  gap: 10px;
  max-width: 95%;
  animation: aiMsgIn 0.3s var(--ease-out);
}
.ai-msg-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}
.ai-msg-assistant {
  align-self: flex-start;
}

.ai-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--accent-primary-muted);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.ai-msg-content {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-primary);
}
.ai-msg-user .ai-msg-content {
  background: var(--accent-primary);
  color: white;
  border-bottom-right-radius: 4px;
}
.ai-msg-assistant .ai-msg-content {
  background: var(--eontra-card);
  border: 1px solid var(--eontra-border);
  border-bottom-left-radius: 4px;
}

/* Markdown inside messages */
.ai-msg-content p { margin-bottom: 8px; color: inherit; }
.ai-msg-content p:last-child { margin-bottom: 0; }
.ai-msg-content strong { color: inherit; font-weight: 700; }
.ai-msg-content em { color: var(--accent-secondary); }
.ai-msg-content .ai-h { margin: 12px 0 6px; font-size: 0.92rem; color: var(--accent-primary-hover); }
.ai-msg-content .ai-list { margin: 8px 0; padding-left: 18px; }
.ai-msg-content .ai-list li { margin-bottom: 4px; }
.ai-msg-content code {
  background: var(--eontra-surface);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.ai-msg-content pre {
  background: var(--eontra-surface);
  border: 1px solid var(--eontra-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  margin: 8px 0;
  overflow-x: auto;
}
.ai-msg-content pre code {
  background: none;
  padding: 0;
}

/* Streaming cursor */
.ai-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent-primary);
  margin-left: 2px;
  animation: blink 0.8s infinite;
  vertical-align: text-bottom;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Error */
.ai-error {
  color: var(--danger);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Suggestions ── */
.ai-suggestions {
  padding: 0 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}
.ai-suggestion-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--eontra-surface);
  border: 1px solid var(--eontra-border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--duration-fast);
  text-align: left;
  width: 100%;
}
.ai-suggestion-btn:hover {
  background: var(--eontra-card);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}
.ai-suggestion-btn span {
  font-size: 1rem;
  flex-shrink: 0;
}

/* ── Status ── */
.ai-status {
  min-height: 24px;
  padding: 0 20px;
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.ai-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
  animation: pulse 1.2s infinite;
}
.ai-status-dot.search {
  background: var(--warning);
}

/* ── Input ── */
.ai-input-area {
  padding: 12px 16px;
  border-top: 1px solid var(--eontra-border);
  background: var(--eontra-surface);
  flex-shrink: 0;
}
.ai-form {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}
.ai-input {
  flex: 1;
  min-height: 40px;
  max-height: 120px;
  padding: 10px 14px;
  background: var(--eontra-dark);
  border: 1px solid var(--eontra-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  resize: none;
  line-height: 1.4;
}
.ai-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-muted);
  outline: none;
}
.ai-input::placeholder { color: var(--text-subtle); }
.ai-send-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  transition: all var(--duration-fast);
}
.ai-send-btn:hover {
  box-shadow: 0 2px 12px rgba(99,102,241,0.4);
}
.ai-send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Animations ── */
@keyframes aiMsgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Nav AI button ── */
.nav-ai-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-ai-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .ai-panel { width: 100vw; }
  .ai-fab { bottom: 16px; right: 16px; width: 50px; height: 50px; font-size: 1.1rem; }
}