:root {
  --bg: #070b14; --panel: #121a2b; --line: #243049; --text: #e8eefc;
  --muted: #8b9bb8; --acc: #5aa7ff; --down: #ff5d5d;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-family: ui-sans-serif, system-ui, sans-serif; }
.hidden { display: none !important; }
.err { color: var(--down); min-height: 1.2em; }
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.login-wrap .card { width: min(400px, 100%); display: grid; gap: 10px; }
.mark { width: 44px; height: 44px; border-radius: 10px; background: #102033; color: var(--acc); display: grid; place-items: center; font-weight: 800; }
h1 { margin: 0; font-size: 1.3rem; }
h2 { margin: 0 0 10px; font-size: 1rem; }
p, .hint { color: var(--muted); font-size: .9rem; }
label { display: grid; gap: 4px; color: var(--muted); font-size: .85rem; }
input, select, textarea, button { font: inherit; }
input, select, textarea {
  background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 10px 12px;
}
button { background: var(--acc); color: #071018; border: 0; border-radius: 10px; padding: 10px 14px; font-weight: 700; cursor: pointer; }
.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
header {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  padding: 10px 16px; background: #0a101c; border-bottom: 1px solid var(--line);
}
nav { display: flex; gap: 6px; flex-wrap: wrap; }
nav button { background: transparent; border: 1px solid var(--line); color: var(--text); border-radius: 999px; padding: 6px 12px; }
nav button.on { background: #1a2740; }
#who { margin-left: auto; color: var(--muted); font-size: .85rem; }
.view { padding: 16px; }
.hrow { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.hrow select, .hrow input, .hrow textarea { flex: 1; min-width: 140px; }
.stack { display: grid; gap: 8px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); }
.chat { min-height: 40vh; display: grid; gap: 8px; margin-bottom: 8px; }
.bubble { padding: 10px 12px; border-radius: 12px; max-width: 92%; white-space: pre-wrap; }
.bubble.user { justify-self: end; background: #1a2740; }
.bubble.assistant { background: var(--panel); border: 1px solid var(--line); }
.up { padding: 8px 12px; cursor: pointer; }
.row-btns button { padding: 6px 10px; font-size: .8rem; margin-right: 4px; }
@media (max-width: 700px) {
  header { padding: 8px; }
  .view { padding: 10px; }
}