body{font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;margin:0;background:#f6f7fb;color:#1a1a1a}
header{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;background:#111;color:#fff}
h1{margin:0;font-size:20px}
nav a{color:#fff;text-decoration:none;margin-left:12px}
.card{background:#fff;margin:16px;padding:16px;border-radius:14px;box-shadow:0 2px 10px rgba(0,0,0,.06)}
label{margin-right:6px}
input[type=text],input[type=password],select{padding:6px 8px;border:1px solid #ccc;border-radius:8px}
button{padding:8px 12px;border:none;border-radius:10px;background:#111;color:#fff;cursor:pointer}
button.link{background:none;color:#c00;border:none}
button.danger{background:#cc0033}
.hint{color:#666;font-size:12px;margin-top:6px}
.list{list-style:none;padding:0;margin:0}
.list li{margin:6px 0}
.flash{position:fixed;bottom:16px;right:16px;max-width:420px}
.flash div{padding:10px 12px;margin-top:8px;border-radius:10px;color:#111;background:#eee}
.flash-ok{background:#e7f9ee}
.flash-error{background:#fde7ea}
.flash-info{background:#e9f4ff}