:root {
  --bg: #0f1115;
  --panel: #151924;
  --panel2: #0c0e13;
  --text: #e6e6e6;
  --muted: #a7aab4;
  --accent: #5aa9ff;
  --danger: #ff5a6a;
  --border: #242a3a;
  --btn: #1d2331;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel2);
}
.brand { font-weight: 700; letter-spacing: 0.3px; }
.topbar-right { display: flex; gap: 10px; align-items: center; }
.badge { color: var(--muted); font-size: 12px; }

.layout {
  display: grid;
  grid-template-columns: 260px 1fr 360px;
  grid-template-rows: 1fr;
  height: calc(100vh - 46px);
}

.sidebar, .chat, .editor { border-right: 1px solid var(--border); }
.chat { border-right: 0; border-left: 1px solid var(--border); }

.sidebar, .chat {
  background: var(--panel2);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.editor {
  display: grid;
  grid-template-rows: auto 1fr 240px;
  background: var(--panel);
}

.panel-title { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.8px; }
.row { display: flex; gap: 8px; align-items: center; }
.stack { display: flex; flex-direction: column; gap: 10px; }
.muted { color: var(--muted); font-size: 12px; }

.input {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  background: var(--btn);
  color: var(--text);
  border-radius: 6px;
}
.textarea { min-height: 70px; resize: vertical; }

.btn {
  padding: 9px 12px;
  border: 1px solid var(--border);
  background: #20304a;
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
}
.btn:hover { border-color: #2f3b54; }
.btn-secondary { background: var(--btn); }

.tree {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  background: #0b0d12;
}
.tree-item {
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}
.tree-item:hover { background: #12182a; }
.tree-item.active { background: #18213a; outline: 1px solid #243059; }
.tree-path { color: var(--muted); font-size: 11px; }

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.editor-body { overflow: hidden; }
.CodeMirror { height: 100% !important; font-size: 13px; }

.bottom {
  border-top: 1px solid var(--border);
  background: var(--panel2);
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}
.tabs { display: flex; gap: 6px; padding: 8px; border-bottom: 1px solid var(--border); }
.tab {
  padding: 7px 10px;
  border: 1px solid var(--border);
  background: var(--btn);
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
}
.tab.active { background: #1a2440; border-color: #2a3a67; }
.tab-body { overflow: hidden; }
.tab-panel { display: none; height: 100%; }
.tab-panel.active { display: block; height: 100%; }
.terminal { height: 100%; padding: 8px; }
.log, .diff {
  margin: 0;
  height: 100%;
  overflow: auto;
  padding: 10px;
  background: #0b0d12;
  border: 0;
  font-size: 12px;
  color: var(--text);
}

.chat-messages {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0b0d12;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.agent-live {
  max-height: 160px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0b0d12;
  padding: 8px;
  font-size: 12px;
  color: var(--muted);
  white-space: pre-wrap;
}
.msg { padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); }
.msg.user { background: #131a2d; }
.msg.assistant { background: #0f1526; }
.msg-meta { color: var(--muted); font-size: 11px; margin-bottom: 6px; }
.msg-body { white-space: pre-wrap; font-size: 13px; }

.chat-input { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: end; }

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal.open { display: flex; }
.modal-card {
  width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.modal-card #qrBox {
  display: flex;
  justify-content: center;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0b0d12;
}
.error { color: var(--danger); font-size: 12px; min-height: 16px; }