body { font-family: Arial, sans-serif; background:#f6f7fb; margin:0; }
.container { max-width: 800px; margin: 40px auto; background:#fff; padding:20px; border-radius:10px; }
label { display:block; margin-top:12px; font-weight:600; }
input, select, button { width:100%; padding:10px; margin-top:6px; border:1px solid #ddd; border-radius:8px; }
button, .btn { display:inline-block; margin-top:14px; padding:10px 14px; border-radius:8px; border:0; background:#111; color:#fff; text-decoration:none; cursor:pointer; }
table { width:100%; border-collapse:collapse; margin-top:18px; }
th, td { border:1px solid #eee; padding:10px; text-align:left; }
.alert { padding:10px; border-radius:8px; margin:10px 0; }
.alert.error { background:#ffe7e7; }
.alert.success { background:#e7ffe9; }