/* ========== КНОПКА АДМИНИСТРАТОРА ========== */

/* Кнопка для входа в режим администратора */
.admin-toggle-btn {
    position: fixed;
    top: 30px;
    right: 15px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    outline: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    user-select: none;
    font-size: 24px;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.admin-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.admin-toggle-btn:active {
    transform: translateY(0);
    background: linear-gradient(135deg, #1a202c 0%, #0f1217 100%);
}

.admin-toggle-btn.admin-active {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    box-shadow: 0 4px 15px rgba(72, 187, 120, 0.3);
}

/* Позиционирование для разных экранов */
#subjectSelectScreen.active .admin-toggle-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 20;
}

/* Скрытие кнопки на некоторых экранах */
#welcomeScreen.active .admin-toggle-btn,
#registrationScreen.active .admin-toggle-btn,
#guestScreen.active .admin-toggle-btn,
#leaderboardScreen .admin-toggle-btn {
    display: none !important;
}

/* Адаптивность */
@media (max-width: 500px) {
    .admin-toggle-btn {
        top: 25px;
        right: 12px;
        width: 40px;
        height: 40px;
        font-size: 22px;
    }

    #subjectSelectScreen.active .admin-toggle-btn {
        top: 18px;
        right: 18px;
    }
}

@media (max-height: 600px) {
    .admin-toggle-btn {
        top: 20px;
        width: 38px;
        height: 38px;
        font-size: 20px;
    }
}

/* Ландшафтная ориентация */
@media (max-height: 500px) and (orientation: landscape) {
    .admin-toggle-btn {
        top: 15px;
        right: 10px;
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
}