/* Simple clean style */
*{box-sizing:border-box}
body{font-family:Inter,Arial,Helvetica,sans-serif;background:#f4f7fb;color:#222;margin:0}
.container{max-width:1000px;margin:28px auto;padding:20px}
.nav{background:#1e90ff;padding:12px;color:#fff;border-radius:8px}
.nav a{color:#fff;text-decoration:none;margin-right:12px;font-weight:600}
.card{background:#fff;padding:16px;border-radius:10px;box-shadow:0 6px 18px rgba(23,42,69,0.08);margin-top:16px}
.table{width:100%;border-collapse:collapse;margin-top:12px}
.table th,.table td{padding:8px;border:1px solid #eee;text-align:left}
.btn{display:inline-block;padding:8px 12px;border-radius:6px;text-decoration:none;border:none;cursor:pointer}
.btn-primary{background:#1e90ff;color:#fff}
.btn-danger{background:#ff5c5c;color:#fff}
.form-row{display:flex;gap:12px}
.form-row .col{flex:1}