/* AI Assist Panel */
.assist-panel { position: fixed; top: 0; right: -380px; width: 350px; height: 100vh; background: var(--surface); border-left: 1px solid var(--border); display: flex; flex-direction: column; z-index: 200; transition: right var(--transition-slow); box-shadow: var(--shadow-lg); }
.assist-panel.open { right: 0; }
.assist-header { display: flex; align-items: center; justify-content: space-between; padding: .75rem 1rem; border-bottom: 1px solid var(--border); }
.assist-header h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 600; }
.assist-actions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .4rem; padding: .75rem 1rem; border-bottom: 1px solid var(--border); }
.assist-action-btn { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: .5rem .6rem; font-size: .75rem; color: var(--text-secondary); cursor: pointer; transition: all var(--transition); text-align: left; line-height: 1.3; }
.assist-action-btn:hover { background: var(--primary-dim); border-color: var(--primary); color: var(--text); }
.assist-messages { flex: 1; overflow-y: auto; padding: .75rem 1rem; display: flex; flex-direction: column; gap: .6rem; }
.assist-msg { max-width: 92%; padding: .6rem .8rem; border-radius: var(--radius-lg); font-size: .85rem; line-height: 1.45; }
.assist-msg.user { align-self: flex-end; background: var(--primary); color: #fff; border-bottom-right-radius: 4px; }
.assist-msg.ai { align-self: flex-start; background: var(--card); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.assist-msg .article-badges { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .4rem; }
.article-badge { background: var(--primary-dim); color: var(--primary-hover); padding: .15rem .4rem; border-radius: 100px; font-size: .68rem; font-family: var(--font-mono); font-weight: 500; }
.assist-input-row { display: flex; gap: .4rem; padding: .75rem 1rem; border-top: 1px solid var(--border); }
.assist-input { flex: 1; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: .4rem .6rem; color: var(--text); font-size: .85rem; }
.assist-input:focus { outline: none; border-color: var(--primary); }

@media (max-width: 768px) {
  .assist-panel { width: 100vw; right: -100vw; top: auto; bottom: 0; height: 60vh; border-left: none; border-top: 1px solid var(--border); border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
  .assist-panel.open { right: 0; }
}