.rfid-login-root { max-width: 560px; margin: 2rem auto; text-align: center; }
.rfid-status { font-size: 1.1rem; padding: 1rem; min-height: 2.2rem; }
.rfid-manual { display:flex; gap:0.5rem; justify-content:center; align-items:center; margin-bottom: 0.5rem; }
.rfid-manual input { padding: 0.5rem; font-size: 1rem; min-width: 200px; }
.rfid-manual button { padding: 0.6rem 0.9rem; font-size: 1rem; }
.rfid-register { border: 1px solid #ddd; border-radius: 8px; padding: 1rem; margin-top: 1rem; }
.rfid-register-form { display: grid; gap: 0.75rem; text-align:left; }
.rfid-register-form input, .rfid-register-form select, .rfid-register-form button { padding: 0.75rem; font-size: 1rem; width: 100%; }
.rfid-terms { display:flex; align-items:center; gap:0.5rem; }
.rfid-hidden-input { position:absolute; left:-9999px; }
.rfid-username-hint { font-size: 0.9rem; margin-top: 0.25rem; min-height: 1em; }
.rfid-register-form input.is-available { border: 2px solid #1e9d36; }
.rfid-register-form input.is-taken { border: 2px solid #cc2b2b; }
.rfid-register-form input.is-adjusted { border: 2px solid #e6a100; }

/* Avatar Picker */
.rfid-avatar-picker { display:flex; gap:0.75rem; align-items:center; }
.rfid-avatar-btn { padding: 0.6rem 0.9rem; }
.rfid-avatar-preview img { width: 56px; height:56px; border-radius: 50%; object-fit: cover; border: 2px solid #444; }
.rfid-avatar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display:flex; align-items:center; justify-content:center; z-index: 99999; }
.rfid-avatar-modal { background: #fff; padding: 1rem; border-radius: 10px; width: min(760px, 92vw); max-height: 90vh; overflow:auto; box-shadow: 0 10px 30px rgba(0,0,0,0.35); }
.rfid-avatar-title { font-weight: 600; margin-bottom: 0.75rem; text-align:center; }
.rfid-avatar-grid { display:grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.rfid-avatar-item { border: 0; background: #f7f7f7; border-radius: 12px; padding: 6px; cursor:pointer; }
.rfid-avatar-item img { width: 100%; height: auto; border-radius: 10px; display:block; }