* { box-sizing: border-box; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background: #0f172a;
  color: #e2e8f0;
}

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.login-box {
  background: #1e293b;
  padding: 32px;
  border-radius: 12px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.login-box h1 { font-size: 18px; margin: 0 0 16px; text-align: center; }
.login-box label { font-size: 13px; color: #94a3b8; margin-top: 8px; }
.login-box input {
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #0f172a;
  color: #e2e8f0;
}
.login-box button {
  margin-top: 16px;
  padding: 10px;
  border-radius: 6px;
  border: none;
  background: #2563eb;
  color: white;
  font-weight: 600;
  cursor: pointer;
}
.login-box button:hover { background: #1d4ed8; }
.error-msg { color: #f87171; font-size: 13px; min-height: 16px; }

header.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: #1e293b;
  border-bottom: 1px solid #334155;
}
header.topbar h1 { font-size: 16px; margin: 0; }
header.topbar a { color: #94a3b8; text-decoration: none; font-size: 13px; }

main { padding: 24px; max-width: 1100px; margin: 0 auto; }

section.panel {
  background: #1e293b;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
section.panel h2 { font-size: 15px; margin: 0 0 14px; color: #cbd5e1; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #334155; }
th { color: #94a3b8; font-weight: 500; }

.badge { padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-online { background: #14532d; color: #4ade80; }
.badge-offline { background: #450a0a; color: #f87171; }

.btn {
  padding: 6px 12px;
  border-radius: 6px;
  border: none;
  background: #2563eb;
  color: white;
  font-size: 12px;
  cursor: pointer;
}
.btn:hover { background: #1d4ed8; }
.btn-secondary { background: #334155; }
.btn-secondary:hover { background: #475569; }

form.inline-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
form.inline-form input, form.inline-form select {
  padding: 8px;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #0f172a;
  color: #e2e8f0;
  font-size: 13px;
}
.msg { font-size: 13px; margin-top: 8px; }
.msg-ok { color: #4ade80; }
.msg-err { color: #f87171; }
.checkbox-list { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0; }
.checkbox-list label { display: flex; align-items: center; gap: 4px; font-size: 13px; }