:root {
  --bg: #0f1419;
  --panel: #15202b;
  --text: #e6e9ec;
  --muted: #9aa6b2;
  --accent: #1d9bf0;
  --danger: #ef4444;
  --ok: #10b981;
  --border: #253341;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.logo, .brand {
  font-weight: 700; font-size: 28px; color: var(--accent);
}
.auth {
  max-width: 420px; margin: 60px auto; padding: 24px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
}
.auth-tabs { display: flex; gap: 8px; margin: 12px 0 16px; }
.tab-btn { flex: 1; padding: 8px 12px; background: transparent; border: 1px solid var(--border); color: var(--text); cursor: pointer; border-radius: 8px; }
.tab-btn.active { background: var(--accent); border-color: var(--accent); }
.auth-panel.hidden { display: none; }
.field { margin: 8px 0; display: flex; flex-direction: column; gap: 6px; }
input, textarea { background: #0b1117; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 10px; }
button { background: var(--accent); border: none; color: white; border-radius: 8px; padding: 10px 14px; cursor: pointer; }
.hint { margin-top: 8px; color: var(--muted); font-size: 12px; }
.error { color: var(--danger); min-height: 18px; margin-top: 6px; }

.layout { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }
.sidebar { border-right: 1px solid var(--border); padding: 18px; }
nav { display: flex; flex-direction: column; gap: 8px; margin: 18px 0; }
.nav-link { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.nav-link:hover { background: #0b1117; }
.logout { margin-top: 18px; background: #374151; }
.user-box { margin-top: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; background: #0b1117; font-size: 14px; }

.content { padding: 18px; }
.composer { display: flex; flex-direction: column; gap: 8px; border: 1px solid var(--border); border-radius: 12px; padding: 12px; background: #0b1117; }
#feed { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; }
.post { border: 1px solid var(--border); border-radius: 12px; padding: 12px; background: var(--panel); }
.post .meta { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.post-actions { display: flex; gap: 8px; margin-top: 8px; }
.post-actions button { background: #374151; }

.view.hidden { display: none; }
#dialog { margin-top: 18px; display: flex; flex-direction: column; gap: 8px; }
.msg { padding: 8px; border-radius: 8px; background: #0b1117; border: 1px solid var(--border); }

#users-list { margin-top: 12px; display: grid; grid-template-columns: 1fr; gap: 8px; }
.user-row { display: flex; align-items: center; justify-content: space-between; padding: 10px; border: 1px solid var(--border); border-radius: 8px; background: #0b1117; }
.user-row .info { display: flex; gap: 8px; align-items: center; }
.badge { font-size: 12px; padding: 2px 6px; border-radius: 6px; background: #374151; }
.badge.ok { background: #1f6feb; }
.badge.admin { background: #f59e0b; }

#gpt-chat { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.msg-ai, .msg-human { padding: 10px; border-radius: 8px; border: 1px solid var(--border); }
.msg-ai { background: #0b1117; }
.msg-human { background: #11263b; }
.gpt-input { display: flex; gap: 8px; margin-top: 12px; }