:root {
  --bg: #f4f6f8;
  --card: #fff;
  --text: #1a1d21;
  --muted: #6b7280;
  --accent: #0f6cff;
  --accent2: #00aa5b;
  --danger: #d92d20;
  --border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 16px; }
nav {
  background: #111827; color: #fff; padding: 12px 0;
  margin-bottom: 20px;
}
nav .wrap { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
nav a { color: #e5e7eb; }
nav a:hover { color: #fff; }
nav .brand { font-weight: 700; color: #fff; margin-right: auto; font-size: 1.15rem; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
  box-shadow: var(--shadow);
}
h1, h2 { margin-top: 0; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.stat { text-align: center; }
.stat .n { font-size: 1.8rem; font-weight: 700; }
label { display: block; margin: 10px 0 4px; font-weight: 600; font-size: .9rem; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; font: inherit; background: #fff;
}
textarea { min-height: 100px; resize: vertical; }
.btn {
  display: inline-block; background: var(--accent); color: #fff !important;
  border: none; border-radius: 8px; padding: 10px 16px; cursor: pointer;
  font: inherit; text-decoration: none !important; margin: 4px 4px 4px 0;
}
.btn:hover { filter: brightness(1.05); }
.btn.secondary { background: #374151; }
.btn.success { background: var(--accent2); }
.btn.danger { background: var(--danger); }
.btn.ghost { background: transparent; color: var(--accent) !important; border: 1px solid var(--border); }
.flash { background: #ecfdf3; border: 1px solid #abefc6; color: #067647; padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
.err { background: #fef3f2; border: 1px solid #fecdca; color: #b42318; padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; }
.msg { max-width: 75%; padding: 10px 12px; border-radius: 12px; margin: 8px 0; white-space: pre-wrap; }
.msg.in { background: #eef2ff; margin-right: auto; }
.msg.out { background: #ecfdf3; margin-left: auto; }
.msg .meta { font-size: .75rem; color: var(--muted); margin-bottom: 4px; }
.thread { display: flex; flex-direction: column; }
.auth-box { max-width: 420px; margin: 40px auto; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem; background: #e5e7eb; }
.badge.ok { background: #d1fadf; color: #067647; }
.badge.warn { background: #fef0c7; color: #b54708; }
.row-actions form { display: inline; }