:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --info: #0f766e;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Meiryo UI", Meiryo, "Hiragino Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header .brand { font-weight: 700; font-size: 18px; }
.header .user { color: var(--muted); font-size: 14px; display: flex; gap: 16px; align-items: center; }
.header form { margin: 0; }
.container { max-width: 960px; margin: 32px auto; padding: 0 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.login-wrap { max-width: 420px; margin: 80px auto; padding: 0 16px; }
.login-wrap h1 { margin: 0 0 20px; font-size: 22px; text-align: center; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--muted); }
.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
}
.field input:focus { outline: 2px solid var(--primary); border-color: transparent; }
.btn {
  display: inline-block;
  width: 100%;
  padding: 11px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  cursor: pointer;
}
.btn:hover { background: var(--primary-hover); }
.btn-link {
  background: none; border: none; color: var(--primary); cursor: pointer; font-size: 14px; padding: 0;
}
.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.alert-error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert-info { background: #f0fdfa; color: var(--info); border: 1px solid #99f6e4; }
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  background: #dbeafe; color: #1e40af; font-size: 12px; font-weight: 600;
}
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th { background: #f9fafb; color: var(--muted); font-weight: 600; }
dl { display: grid; grid-template-columns: 160px 1fr; gap: 8px 16px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }
.menu { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.menu a {
  padding: 10px 16px; border: 1px solid var(--border); border-radius: 6px; background: var(--card);
}
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.btn-inline { width: auto; padding: 8px 18px; font-size: 14px; }
a.btn-inline { color: #fff; }
a.btn-inline:hover { text-decoration: none; }
.form-card { max-width: 800px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
@media (max-width: 640px) { .grid2 { grid-template-columns: 1fr; } }
.field select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 15px; background: #fff;
}
.field .is-invalid { border-color: var(--danger); }
.req { color: var(--danger); font-size: 12px; margin-left: 6px; }
.err { color: var(--danger); font-size: 13px; margin: 6px 0 0; }
.hint { color: var(--muted); font-size: 12px; margin: 6px 0 0; }
.right { text-align: right; }
.alert ul { margin: 0; padding-left: 18px; }
.actions { display: flex; gap: 16px; align-items: center; margin-top: 8px; }
.btn-cancel { color: var(--muted); font-size: 14px; }
.muted { color: var(--muted); font-size: 14px; }
.center { text-align: center; }
.text-danger { color: var(--danger); }
.row-actions { white-space: nowrap; }
.row-actions form { display: inline; margin-left: 10px; }