* { box-sizing: border-box; }
body { font-family: 'Segoe UI', Arial, sans-serif; background: #eef2f7; margin: 0; color: #232b36; }
a { color: #2563eb; text-decoration: none; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 20px; }
.login-box { max-width: 360px; margin: 80px auto; background: #fff; padding: 30px; border-radius: 10px; box-shadow: 0 4px 20px rgba(0,0,0,.08); }
.login-box h1 { font-size: 20px; margin-bottom: 20px; color: #2563eb; }
input, textarea, select { width: 100%; padding: 10px; margin: 6px 0 14px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; }
label { font-weight: 600; font-size: 13px; color: #555; }
button, .btn { background: #2563eb; color: #fff; border: none; padding: 10px 18px; border-radius: 6px; cursor: pointer; font-size: 14px; display: inline-block; }
button:hover, .btn:hover { background: #1d4ed8; }
.btn-danger { background: #dc2626; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
nav { background: #0f172a; padding: 14px 20px; display: flex; justify-content: space-between; align-items: center; }
nav .brand { color: #e2e8f0; font-weight: 700; font-size: 18px; }
nav a { color: #93b4e8; margin-left: 18px; font-size: 14px; }
nav a:hover { color: #fff; }
.card { background: #fff; border-radius: 10px; padding: 20px; margin-bottom: 20px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid #eee; font-size: 14px; vertical-align: top; }
th { color: #888; font-size: 12px; text-transform: uppercase; }
.thumb { width: 50px; height: 50px; object-fit: cover; border-radius: 6px; }
.pill { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; }
.pill-on { background: #dcfce7; color: #15803d; }
.pill-off { background: #fee2e2; color: #b91c1c; }
.msg-flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.msg-ok { background: #dcfce7; color: #15803d; }
.msg-err { background: #fee2e2; color: #b91c1c; }
.chat-list a { display: block; padding: 10px; border-bottom: 1px solid #eee; color: #333; }
.chat-list a:hover { background: #eef2f7; }
.chat-window { height: 420px; overflow-y: auto; background: #dbe6f5; padding: 14px; border-radius: 8px; }
.bubble { max-width: 70%; padding: 8px 12px; border-radius: 10px; margin-bottom: 8px; font-size: 14px; clear: both; }
.bubble-in { background: #fff; float: left; }
.bubble-out { background: #bfdbfe; float: right; }
.bubble small { display: block; color: #999; font-size: 10px; margin-top: 4px; }
.clearfix::after { content: ""; display: table; clear: both; }
.grid-2 { display: grid; grid-template-columns: 280px 1fr; gap: 20px; }
.row { display: flex; gap: 14px; }
.row > div { flex: 1; }