*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f0f13;
  --surface: #1a1a22;
  --border: #2a2a36;
  --accent: #7c6af7;
  --text: #e0e0e8;
  --muted: #6b6b80;
  --sidebar-w: 200px;
  --peerlist-w: 180px;
}

html, body, #root { height: 100%; }
body { background: var(--bg); color: var(--text); font-family: system-ui, sans-serif; font-size: 14px; }

button { cursor: pointer; background: var(--accent); color: #fff; border: none; border-radius: 4px; padding: 4px 10px; font-size: 13px; }
button:disabled { opacity: 0.4; cursor: default; }
input { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 4px; padding: 6px 10px; font-size: 13px; outline: none; }
input:focus { border-color: var(--accent); }

/* ── onboarding ── */
.onboarding { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; gap: 16px; }
.onboarding h1 { font-size: 2rem; letter-spacing: 0.1em; color: var(--accent); }
.onboarding .status { color: var(--muted); }
.join-form { display: flex; gap: 8px; }
.join-form input { width: 220px; }

/* ── chat layout ── */
.chat-layout { display: grid; grid-template-columns: var(--sidebar-w) 1fr var(--peerlist-w); height: 100%; }

/* ── sidebar ── */
.sidebar { background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 4px; padding: 12px 8px; overflow-y: auto; }
.sidebar-identity { padding: 8px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.sidebar-identity .alias { display: block; font-weight: 600; }
.sidebar-identity .peer-id { display: block; color: var(--muted); font-size: 11px; font-family: monospace; }
.sidebar-section { display: flex; flex-direction: column; gap: 2px; margin-bottom: 16px; }
.sidebar-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); padding: 4px 8px; }
.sidebar-item { background: none; color: var(--text); text-align: left; padding: 5px 8px; border-radius: 4px; width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-item:hover { background: var(--border); }
.sidebar-item.active { background: var(--accent); color: #fff; }

/* ── message pane ── */
.message-pane { display: flex; flex-direction: column; height: 100%; }
.message-pane-header { padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 600; color: var(--muted); }
.messages { flex: 1; overflow-y: auto; padding: 12px 16px; display: flex; flex-direction: column; gap: 6px; }
.message { display: flex; gap: 8px; align-items: baseline; }
.message.mine .message-alias { color: var(--accent); }
.message-alias { font-weight: 600; min-width: 80px; color: var(--muted); font-size: 12px; }
.message-text { flex: 1; word-break: break-word; }
.message-ts { color: var(--muted); font-size: 11px; white-space: nowrap; }
.compose { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); }
.compose input { flex: 1; }

/* ── peer list ── */
.peer-list { background: var(--surface); border-left: 1px solid var(--border); padding: 12px 8px; display: flex; flex-direction: column; gap: 4px; overflow-y: auto; }
.peer-entry { display: flex; flex-direction: column; gap: 4px; padding: 6px 8px; border-radius: 4px; }
.peer-entry:hover { background: var(--border); }
.peer-entry-info .alias { display: block; font-weight: 600; font-size: 13px; }
.peer-entry-info .peer-id { display: block; color: var(--muted); font-size: 11px; font-family: monospace; }
.peer-entry-actions { display: flex; gap: 4px; }
.peer-entry-actions button { font-size: 11px; padding: 2px 6px; background: var(--border); color: var(--text); }
.peer-entry-actions button:hover { background: var(--accent); color: #fff; }
.empty { color: var(--muted); font-size: 12px; padding: 8px; }