:root {
  color-scheme: light;
  font-family: Arial, sans-serif;
  background: #f3f5f7;
  color: #16202f;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
header {
  height: 60px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  border-bottom: 1px solid #dde3ea;
}
header strong { display: block; font-size: 17px; }
header span { display: block; font-size: 13px; color: #687386; margin-top: 2px; }
nav { display: flex; gap: 8px; }
a { color: #1f5f9f; text-decoration: none; }
nav a, .button, button {
  border: 1px solid #cbd5e1;
  background: #fff;
  color: #16202f;
  border-radius: 6px;
  padding: 9px 12px;
  font: inherit;
  cursor: pointer;
}
main { width: min(1180px, calc(100vw - 32px)); margin: 24px auto; }
h1, h2 { margin: 0 0 8px; letter-spacing: 0; }
p { margin: 0; color: #667388; }
.auth-card, .panel, .card {
  background: #fff;
  border: 1px solid #dde3ea;
  border-radius: 8px;
}
.auth-card { width: min(420px, 100%); margin: 12vh auto; padding: 24px; }
label { display: grid; gap: 6px; font-size: 13px; color: #4c5a6d; }
input, select {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 10px;
  font: inherit;
  color: #16202f;
  background: #fff;
}
.auth-card form { display: grid; gap: 14px; margin-top: 18px; }
button, .primary { background: #1769aa; color: #fff; border-color: #1769aa; }
.danger { border-color: #b94747; color: #9d2f2f; }
.toolbar { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.card { padding: 16px; display: grid; gap: 14px; }
.card-title strong { display: block; font-size: 20px; }
.card-title span { display: block; color: #687386; margin-top: 4px; line-height: 1.35; }
dl { margin: 0; display: grid; gap: 7px; }
dl div { display: flex; justify-content: space-between; gap: 12px; }
dt { color: #687386; }
dd { margin: 0; font-weight: 600; text-align: right; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.tabs a { padding: 9px 12px; border: 1px solid #cbd5e1; border-radius: 6px; background: #fff; }
.panel { padding: 16px; margin-bottom: 18px; }
.grid-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; padding: 12px 0; border-top: 1px solid #edf1f5; }
.grid-form:first-of-type { border-top: 0; }
.compact { border-top: 0; padding: 0; }
.check { display: flex; align-items: center; gap: 8px; color: #16202f; }
.check input { width: auto; }
.assignments { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0; }
.assignments label { display: flex; align-items: center; gap: 6px; }
.assignments input { width: auto; }
.user-form { padding: 12px 0; border-top: 1px solid #edf1f5; }
.notice, .alert {
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.notice { background: #eaf6ed; border: 1px solid #bee5c8; }
.alert { background: #fff1f1; border: 1px solid #f2c2c2; color: #8b2525; }
@media (max-width: 640px) {
  header { height: auto; padding: 12px 16px; align-items: flex-start; gap: 10px; flex-direction: column; }
  main { margin: 16px auto; }
}