body { height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

.agent-bar {
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
    padding: 0.7rem 1.2rem; background: var(--bg-panel);
    border-bottom: 1px solid var(--border-glass); z-index: 2;
}
.agent-bar .brand h1 { font-size: 1.1rem; letter-spacing: 3px; }
.cfg { display: flex; align-items: center; gap: 8px; flex: 1; flex-wrap: wrap; }
.cfg input[type=password], .cfg input#model, .cfg select {
    background: #12141c; color: var(--text-main); border: 1px solid rgba(255,255,255,0.15);
    padding: 6px 10px; font-family: var(--font-mono); font-size: 0.78rem;
}
.cfg select#provider { border-color: rgba(24,224,255,0.4); color: var(--accent-cyan); }
.cfg input[type=password] { width: 230px; }
.cfg input#model { width: 280px; }
.cfg .flt { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.cfg .muted { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); }
.agent-nav { display: flex; gap: 6px; }
.agent-nav a { font-family: var(--font-mono); font-size: 0.78rem; padding: 5px 11px; border: 1px solid rgba(255,255,255,0.12); color: var(--text-muted); }
.agent-nav a:hover { color: var(--accent-lime); border-color: var(--accent-lime); }

.chat-wrap { flex: 1; min-height: 0; display: flex; flex-direction: column; max-width: 920px; width: 100%; margin: 0 auto; }
.chat { flex: 1; overflow-y: auto; padding: 1.2rem; display: flex; flex-direction: column; gap: 12px; }
.chat::-webkit-scrollbar { width: 8px; }
.chat::-webkit-scrollbar-thumb { background: rgba(57,255,20,0.2); }

.bubble { max-width: 88%; padding: 0.8rem 1rem; line-height: 1.55; font-size: 0.92rem; border: 1px solid rgba(255,255,255,0.08); }
.bubble.user { align-self: flex-end; background: rgba(57,255,20,0.08); border-color: rgba(57,255,20,0.3); }
.bubble.assistant { align-self: flex-start; background: var(--bg-panel); }
.bubble.system { align-self: stretch; max-width: 100%; background: rgba(24,224,255,0.05); border-color: rgba(24,224,255,0.2); color: var(--text-muted); font-size: 0.86rem; }
.bubble.system b { color: var(--text-main); }
.bubble.system ol { margin: 8px 0 0 18px; } .bubble.system li { margin-bottom: 5px; }
.bubble .ex { color: var(--accent-lime); font-family: var(--font-mono); font-size: 0.8rem; }
.bubble.error { align-self: stretch; max-width: 100%; background: rgba(255,0,60,0.08); border-color: rgba(255,0,60,0.35); color: #ff8aa0; font-family: var(--font-mono); font-size: 0.8rem; }

.tool { align-self: flex-start; max-width: 88%; font-family: var(--font-mono); font-size: 0.76rem; border: 1px solid rgba(255,176,32,0.3); background: rgba(255,176,32,0.05); }
.tool summary { cursor: pointer; padding: 6px 10px; color: #ffb020; list-style: none; }
.tool summary::-webkit-details-marker { display: none; }
.tool summary b { color: var(--accent-lime); }
.tool pre { margin: 0; padding: 8px 10px; border-top: 1px solid rgba(255,255,255,0.08); white-space: pre-wrap; word-break: break-word; color: var(--text-muted); max-height: 220px; overflow: auto; }
.thinking { align-self: flex-start; font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); padding: 4px 10px; }
.thinking::after { content: '▋'; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.composer { display: flex; gap: 10px; padding: 0.9rem 1.2rem; border-top: 1px solid rgba(255,255,255,0.08); background: var(--bg-panel); }
.composer textarea { flex: 1; resize: none; background: #12141c; color: var(--text-main); border: 1px solid rgba(255,255,255,0.15); padding: 9px 12px; font-family: var(--font-sans); font-size: 0.92rem; }
.composer .action-btn { align-self: stretch; padding: 0 22px; }

@media (max-width: 760px) {
    .agent-bar { gap: 8px; }
    .cfg input[type=password], .cfg input#model { width: 100%; }
    .cfg { order: 3; }
}