* { box-sizing: border-box; }
body { font-family: -apple-system, "Malgun Gothic", sans-serif; margin: 0; color: #1a1a1a; }
.topbar { display: flex; justify-content: space-between; align-items: center;
    padding: 12px 20px; background: #1f3a5f; color: #fff; }
.topbar a { color: #fff; text-decoration: none; margin-right: 14px; }
.brand { font-weight: 700; }
.inline { display: inline; }
main { max-width: 900px; margin: 24px auto; padding: 0 16px; }
form label { display: block; margin: 10px 0; }
form input[type=text], form input[type=password] { padding: 6px; width: 260px; }
button { padding: 7px 16px; background: #1f3a5f; color: #fff; border: 0; border-radius: 4px; cursor: pointer; }
.msg { color: #b00; }
.msg.error { color: #b00; font-weight: 600; }
table { border-collapse: collapse; width: 100%; }
th, td { border: 1px solid #ccc; padding: 6px 10px; text-align: left; }
.admin-warnings { margin-bottom: 16px; }
.admin-warning { background: #fff3cd; border: 1px solid #ffe08a; color: #7a5b00;
    padding: 8px 12px; border-radius: 4px; margin-bottom: 6px; }